1 #if !defined(lint) && !defined(DOS)
2 static char rcsid
[] = "$Id: filter.c 1266 2009-07-14 18:39:12Z hubert@u.washington.edu $";
6 * ========================================================================
7 * Copyright 2013-2020 Eduardo Chappa
8 * Copyright 2006-2008 University of Washington
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
14 * http://www.apache.org/licenses/LICENSE-2.0
16 * ========================================================================
19 /*======================================================================
22 This code provides a generalized, flexible way to allow
23 piping of data thru filters. Each filter is passed a structure
24 that it will use to hold its static data while it operates on
25 the stream of characters that are passed to it. After processing
26 it will either return or call the next filter in
27 the pipe with any character (or characters) it has ready to go. This
28 means some terminal type of filter has to be the last in the
29 chain (i.e., one that writes the passed char someplace, but doesn't
32 See below for more details.
34 The motivation is to handle MIME decoding, richtext conversion,
35 iso_code stripping and anything else that may come down the
36 pike (e.g., PEM) in an elegant fashion. mikes (920811)
39 reasonable error handling
44 #include "../pith/headers.h"
45 #include "../pith/filter.h"
46 #include "../pith/conf.h"
47 #include "../pith/store.h"
48 #include "../pith/color.h"
49 #include "../pith/escapes.h"
50 #include "../pith/pipe.h"
51 #include "../pith/status.h"
52 #include "../pith/string.h"
53 #include "../pith/util.h"
54 #include "../pith/url.h"
55 #include "../pith/init.h"
56 #include "../pith/help.h"
57 #include "../pico/keydefs.h"
60 #include "../pico/osdep/mswin.h"
67 int gf_so_writec(int);
68 int gf_so_readc(unsigned char *);
69 int gf_freadc(unsigned char *);
70 int gf_freadc_locale(unsigned char *);
71 int gf_freadc_getchar(unsigned char *, void *);
73 int gf_fwritec_locale(int);
75 int gf_freadc_windows(unsigned char *);
77 int gf_preadc(unsigned char *);
78 int gf_preadc_locale(unsigned char *);
79 int gf_preadc_getchar(unsigned char *, void *);
81 int gf_pwritec_locale(int);
82 int gf_sreadc(unsigned char *);
83 int gf_sreadc_locale(unsigned char *);
84 int gf_sreadc_getchar(unsigned char *, void *);
86 int gf_swritec_locale(int);
87 void gf_terminal(FILTER_S
*, int);
88 void gf_error(char *);
89 char *gf_filter_puts(char *);
90 void gf_filter_eod(void);
92 void gf_8bit_put(FILTER_S
*, int);
97 * System specific options
100 #define CRLF_NEWLINES
105 * Hooks for callers to adjust behavior
107 char *(*pith_opt_pretty_var_name
)(char *);
108 char *(*pith_opt_pretty_feature_name
)(char *, int);
112 * pointer to first function in a pipe, and pointer to last filter
114 FILTER_S
*gf_master
= NULL
;
115 static gf_io_t last_filter
;
116 static char *gf_error_string
;
117 static long gf_byte_count
;
118 static jmp_buf gf_error_state
;
121 #define GF_NOOP 0x01 /* flags used by generalized */
122 #define GF_EOD 0x02 /* filters */
123 #define GF_DATA 0x04 /* See filter.c for more */
124 #define GF_ERROR 0x08 /* details */
125 #define GF_RESET 0x10
129 * A list of states used by the various filters. Reused in many filters.
149 #define STOP_DECODING 18
155 * Macros to reduce function call overhead associated with calling
156 * each filter for each byte filtered, and to minimize filter structure
157 * dereferences. NOTE: "queuein" has to do with putting chars into the
158 * filter structs data queue. So, writing at the queuein offset is
159 * what a filter does to pass processed data out of itself. Ditto for
160 * queueout. This explains the FI --> queueout init stuff below.
162 #define GF_QUE_START(F) (&(F)->queue[0])
163 #define GF_QUE_END(F) (&(F)->queue[GF_MAXBUF - 1])
165 #define GF_IP_INIT(F) ip = (F) ? &(F)->queue[(F)->queuein] : NULL
166 #define GF_IP_INIT_GLO(F) (*ipp) = (F) ? &(F)->queue[(F)->queuein] : NULL
167 #define GF_EIB_INIT(F) eib = (F) ? GF_QUE_END(F) : NULL
168 #define GF_EIB_INIT_GLO(F) (*eibp) = (F) ? GF_QUE_END(F) : NULL
169 #define GF_OP_INIT(F) op = (F) ? &(F)->queue[(F)->queueout] : NULL
170 #define GF_EOB_INIT(F) eob = (F) ? &(F)->queue[(F)->queuein] : NULL
172 #define GF_IP_END(F) (F)->queuein = ip - GF_QUE_START(F)
173 #define GF_IP_END_GLO(F) (F)->queuein = (unsigned char *)(*ipp) - (unsigned char *)GF_QUE_START(F)
174 #define GF_OP_END(F) (F)->queueout = op - GF_QUE_START(F)
176 #define GF_INIT(FI, FO) unsigned char *GF_OP_INIT(FI); \
177 unsigned char *GF_EOB_INIT(FI); \
178 unsigned char *GF_IP_INIT(FO); \
179 unsigned char *GF_EIB_INIT(FO);
181 #define GF_CH_RESET(F) (op = eob = GF_QUE_START(F), \
182 (F)->queueout = (F)->queuein = 0)
184 #define GF_END(FI, FO) (GF_OP_END(FI), GF_IP_END(FO))
186 #define GF_FLUSH(F) ((GF_IP_END(F), (*(F)->f)((F), GF_DATA), \
187 GF_IP_INIT(F), GF_EIB_INIT(F)) ? 1 : 0)
188 #define GF_FLUSH_GLO(F) ((GF_IP_END_GLO(F), (*(F)->f)((F), GF_DATA), \
189 GF_IP_INIT_GLO(F), GF_EIB_INIT_GLO(F)) ? 1 : 0)
191 #define GF_PUTC(F, C) ((int)(*ip++ = (C), (ip >= eib) ? GF_FLUSH(F) : 1))
192 #define GF_PUTC_GLO(F, C) ((int)(*(*ipp)++ = (C), ((*ipp) >= (*eibp)) ? GF_FLUSH_GLO(F) : 1))
195 * Introducing the *_GLO macros for use in splitting the big macros out
196 * into functions (wrap_flush, wrap_eol). The reason we need a
197 * separate macro is because of the vars ip, eib, op, and eob, which are
198 * set up locally in a call to GF_INIT. To preserve these variables
199 * in the new functions, we now pass pointers to these four vars. Each
200 * of these new functions expects the presence of pointer vars
201 * ipp, eibp, opp, and eobp.
204 #define GF_GETC(F, C) ((op < eob) ? (((C) = *op++), 1) : GF_CH_RESET(F))
206 #define GF_COLOR_PUTC(F, C) { \
209 GF_PUTC_GLO((F)->next, TAG_EMBED); \
210 GF_PUTC_GLO((F)->next, TAG_FGCOLOR); \
211 strncpy(cb, color_to_asciirgb((C)->fg), sizeof(cb)); \
212 cb[sizeof(cb)-1] = '\0'; \
215 GF_PUTC_GLO((F)->next, *p); \
216 GF_PUTC_GLO((F)->next, TAG_EMBED); \
217 GF_PUTC_GLO((F)->next, TAG_BGCOLOR); \
218 strncpy(cb, color_to_asciirgb((C)->bg), sizeof(cb)); \
219 cb[sizeof(cb)-1] = '\0'; \
222 GF_PUTC_GLO((F)->next, *p); \
226 * Generalized getc and putc routines. provided here so they don't
227 * need to be re-done elsewhere to
231 * pointers to objects to be used by the generic getc and putc
234 static struct gf_io_struct
{
243 #define GF_SO_STACK struct gf_so_stack
247 } *gf_so_in
, *gf_so_out
;
252 * Returns 1 if pc will write into a PicoText object, 0 otherwise.
254 * The purpose of this routine is so that we can avoid setting SIGALARM
255 * when writing into a PicoText object, because that type of object uses
256 * unprotected malloc/free/realloc, which can't be interrupted.
259 pc_is_picotext(gf_io_t pc
)
261 return(pc
== gf_so_writec
&& gf_so_out
&& gf_so_out
->so
&&
262 gf_so_out
->so
->src
== ExternalText
);
268 * setup to use and return a pointer to the generic
272 gf_set_readc(gf_io_t
*gc
, void *txt
, long unsigned int len
, SourceType src
, int flags
)
276 gf_in
.cb
.cbuf
[0] = '\0';
277 gf_in
.cb
.cbufp
= gf_in
.cb
.cbuf
;
278 gf_in
.cb
.cbufend
= gf_in
.cb
.cbuf
;
281 gf_in
.file
= (FILE *)txt
;
282 fseek(gf_in
.file
, 0L, 0);
284 *gc
= (flags
& READ_FROM_LOCALE
) ? gf_freadc_windows
287 *gc
= (flags
& READ_FROM_LOCALE
) ? gf_freadc_locale
291 else if(src
== PipeStar
){
292 gf_in
.pipe
= (PIPE_S
*)txt
;
294 *gc
= (flags
& READ_FROM_LOCALE
) ? gf_preadc_locale
298 gf_in
.txtp
= (char *)txt
;
299 *gc
= (flags
& READ_FROM_LOCALE
) ? gf_sreadc_locale
306 * setup to use and return a pointer to the generic
310 gf_set_writec(gf_io_t
*pc
, void *txt
, long unsigned int len
, SourceType src
, int flags
)
313 gf_out
.flags
= flags
;
314 gf_out
.cb
.cbuf
[0] = '\0';
315 gf_out
.cb
.cbufp
= gf_out
.cb
.cbuf
;
316 gf_out
.cb
.cbufend
= gf_out
.cb
.cbuf
;
319 gf_out
.file
= (FILE *)txt
;
323 *pc
= (flags
& WRITE_TO_LOCALE
) ? gf_fwritec_locale
327 else if(src
== PipeStar
){
328 gf_out
.pipe
= (PIPE_S
*)txt
;
329 *pc
= (flags
& WRITE_TO_LOCALE
) ? gf_pwritec_locale
333 gf_out
.txtp
= (char *)txt
;
334 *pc
= (flags
& WRITE_TO_LOCALE
) ? gf_swritec_locale
341 * setup to use and return a pointer to the generic
345 gf_set_so_readc(gf_io_t
*gc
, STORE_S
*so
)
347 GF_SO_STACK
*sp
= (GF_SO_STACK
*) fs_get(sizeof(GF_SO_STACK
));
357 gf_clear_so_readc(STORE_S
*so
)
361 if((sp
= gf_so_in
) != NULL
){
363 gf_so_in
= gf_so_in
->next
;
364 fs_give((void **) &sp
);
367 alpine_panic("Programmer botch: Can't unstack store readc");
370 alpine_panic("Programmer botch: NULL store clearing store readc");
375 * setup to use and return a pointer to the generic
379 gf_set_so_writec(gf_io_t
*pc
, STORE_S
*so
)
381 GF_SO_STACK
*sp
= (GF_SO_STACK
*) fs_get(sizeof(GF_SO_STACK
));
384 sp
->next
= gf_so_out
;
391 gf_clear_so_writec(STORE_S
*so
)
395 if((sp
= gf_so_out
) != NULL
){
397 gf_so_out
= gf_so_out
->next
;
398 fs_give((void **) &sp
);
401 alpine_panic("Programmer botch: Can't unstack store writec");
404 alpine_panic("Programmer botch: NULL store clearing store writec");
409 * put the character to the object previously defined
414 return(so_writec(c
, gf_so_out
->so
));
419 * get a character from an object previously defined
422 gf_so_readc(unsigned char *c
)
424 return(so_readc(c
, gf_so_in
->so
));
428 /* get a character from a file */
429 /* assumes gf_out struct is filled in */
431 gf_freadc(unsigned char *c
)
437 clearerr(gf_in
.file
);
438 rv
= fread(c
, sizeof(unsigned char), (size_t)1, gf_in
.file
);
439 } while(!rv
&& ferror(gf_in
.file
) && errno
== EINTR
);
446 gf_freadc_locale(unsigned char *c
)
448 return(generic_readc_locale(c
, gf_freadc_getchar
, (void *) gf_in
.file
, &gf_in
.cb
));
453 * This is just to make it work with generic_readc_locale.
456 gf_freadc_getchar(unsigned char *c
, void *extraarg
)
461 file
= (FILE *) extraarg
;
466 rv
= fread(c
, sizeof(unsigned char), (size_t)1, file
);
467 } while(!rv
&& ferror(file
) && errno
== EINTR
);
474 * Put a character to a file.
475 * Assumes gf_out struct is filled in.
476 * Returns 1 on success, <= 0 on failure.
481 unsigned char ch
= (unsigned char)c
;
485 rv
= fwrite(&ch
, sizeof(unsigned char), (size_t)1, gf_out
.file
);
486 while(!rv
&& ferror(gf_out
.file
) && errno
== EINTR
);
493 * The locale version converts from UTF-8 to user's locale charset
494 * before writing the characters.
497 gf_fwritec_locale(int c
)
501 unsigned char obuf
[MAX(MB_LEN_MAX
,32)];
503 if((outchars
= utf8_to_locale(c
, &gf_out
.cb
, obuf
, sizeof(obuf
))) != 0){
504 for(i
= 0; i
< outchars
; i
++)
505 if(gf_fwritec(obuf
[i
]) != 1){
517 * Read unicode characters from windows filesystem and return
518 * them as a stream of UTF-8 characters. The stream is assumed
519 * opened so that it will know how to put together the unicode.
521 * (This is totally untested, copied loosely from so_file_readc_windows
522 * which may or may not be appropriate.)
525 gf_freadc_windows(unsigned char *c
)
530 /* already got some from previous call? */
531 if(gf_in
.cb
.cbufend
> gf_in
.cb
.cbuf
){
532 *c
= *gf_in
.cb
.cbufp
;
535 if(gf_in
.cb
.cbufp
>= gf_in
.cb
.cbufend
){
536 gf_in
.cb
.cbufend
= gf_in
.cb
.cbuf
;
537 gf_in
.cb
.cbufp
= gf_in
.cb
.cbuf
;
544 /* windows only so second arg is ignored */
545 ucs
= read_a_wide_char(gf_in
.file
, NULL
);
546 rv
= (ucs
== CCONV_EOF
) ? 0 : 1;
551 * Now we need to convert the UCS character to UTF-8
552 * and dole out the UTF-8 one char at a time.
554 gf_in
.cb
.cbufend
= utf8_put(gf_in
.cb
.cbuf
, (unsigned long) ucs
);
555 gf_in
.cb
.cbufp
= gf_in
.cb
.cbuf
;
556 if(gf_in
.cb
.cbufend
> gf_in
.cb
.cbuf
){
557 *c
= *gf_in
.cb
.cbufp
;
559 if(gf_in
.cb
.cbufp
>= gf_in
.cb
.cbufend
){
560 gf_in
.cb
.cbufend
= gf_in
.cb
.cbuf
;
561 gf_in
.cb
.cbufp
= gf_in
.cb
.cbuf
;
570 #endif /* _WINDOWS */
574 gf_preadc(unsigned char *c
)
576 return(pipe_readc(c
, gf_in
.pipe
));
581 gf_preadc_locale(unsigned char *c
)
583 return(generic_readc_locale(c
, gf_preadc_getchar
, (void *) gf_in
.pipe
, &gf_in
.cb
));
588 * This is just to make it work with generic_readc_locale.
591 gf_preadc_getchar(unsigned char *c
, void *extraarg
)
595 pipe
= (PIPE_S
*) extraarg
;
597 return(pipe_readc(c
, pipe
));
602 * Put a character to a pipe.
603 * Assumes gf_out struct is filled in.
604 * Returns 1 on success, <= 0 on failure.
609 return(pipe_writec(c
, gf_out
.pipe
));
614 * The locale version converts from UTF-8 to user's locale charset
615 * before writing the characters.
618 gf_pwritec_locale(int c
)
622 unsigned char obuf
[MAX(MB_LEN_MAX
,32)];
624 if((outchars
= utf8_to_locale(c
, &gf_out
.cb
, obuf
, sizeof(obuf
))) != 0){
625 for(i
= 0; i
< outchars
; i
++)
626 if(gf_pwritec(obuf
[i
]) != 1){
636 /* get a character from a string, return nonzero if things OK */
637 /* assumes gf_out struct is filled in */
639 gf_sreadc(unsigned char *c
)
641 return((gf_in
.n
) ? *c
= *(gf_in
.txtp
)++, gf_in
.n
-- : 0);
646 gf_sreadc_locale(unsigned char *c
)
648 return(generic_readc_locale(c
, gf_sreadc_getchar
, NULL
, &gf_in
.cb
));
653 gf_sreadc_getchar(unsigned char *c
, void *extraarg
)
656 * extraarg is ignored and gf_sreadc just uses globals instead.
657 * That's ok as long as we don't call it more than once at a time.
659 return(gf_sreadc(c
));
664 * Put a character to a string.
665 * Assumes gf_out struct is filled in.
666 * Returns 1 on success, <= 0 on failure.
671 return((gf_out
.n
) ? *(gf_out
.txtp
)++ = c
, gf_out
.n
-- : 0);
676 * The locale version converts from UTF-8 to user's locale charset
677 * before writing the characters.
680 gf_swritec_locale(int c
)
684 unsigned char obuf
[MAX(MB_LEN_MAX
,32)];
686 if((outchars
= utf8_to_locale(c
, &gf_out
.cb
, obuf
, sizeof(obuf
))) != 0){
687 for(i
= 0; i
< outchars
; i
++)
688 if(gf_swritec(obuf
[i
]) != 1){
699 * output the given string with the given function
702 gf_puts(register char *s
, gf_io_t pc
)
705 if(!(*pc
)((unsigned char)*s
++))
706 return(0); /* ERROR putting char ! */
713 * output the given string with the given function
716 gf_nputs(register char *s
, long int n
, gf_io_t pc
)
719 if(!(*pc
)((unsigned char)*s
++))
720 return(0); /* ERROR putting char ! */
727 * Read a stream of multi-byte characters from the
728 * user's locale charset and return a stream of
729 * UTF-8 characters, one at a time. The input characters
730 * are obtained by using the get_a_char function.
732 * Args c -- the returned octet
733 * get_a_char -- function to get a single octet of the multibyte
734 * character. The first arg of that function is the
735 * returned value and the second arg is for the
736 * functions use. The second arg is replaced with
737 * extraarg when it is called.
738 * extraarg -- The second arg to get_a_char.
739 * cb -- Storage area for state between calls to this func.
742 generic_readc_locale(unsigned char *c
,
743 int (*get_a_char
)(unsigned char *, void *),
747 unsigned long octets_so_far
= 0, remaining_octets
;
748 unsigned char *inputp
;
751 unsigned char inputbuf
[20];
755 /* already got some from previous call? */
756 if(cb
->cbufend
> cb
->cbuf
){
760 if(cb
->cbufp
>= cb
->cbufend
){
761 cb
->cbufend
= cb
->cbuf
;
762 cb
->cbufp
= cb
->cbuf
;
768 memset(inputbuf
, 0, sizeof(inputbuf
));
769 if((*get_a_char
)(&ch
, extraarg
) == 0)
772 inputbuf
[octets_so_far
++] = ch
;
775 remaining_octets
= octets_so_far
;
777 ucs
= mbtow(ps_global
->input_cs
, &inputp
, &remaining_octets
);
784 * Do we need to do something with the characters we've
785 * collected that don't form a valid UCS character?
786 * Probably need to try discarding them one at a time
787 * from the front instead of just throwing them all out.
789 if(octets_so_far
>= sizeof(inputbuf
))
792 if((*get_a_char
)(&ch
, extraarg
) == 0)
795 inputbuf
[octets_so_far
++] = ch
;
799 /* got a good UCS-4 character */
806 * Now we need to convert the UCS character to UTF-8
807 * and dole out the UTF-8 one char at a time.
810 cb
->cbufend
= utf8_put(cb
->cbuf
, (unsigned long) ucs
);
811 cb
->cbufp
= cb
->cbuf
;
812 if(cb
->cbufend
> cb
->cbuf
){
815 if(cb
->cbufp
>= cb
->cbufend
){
816 cb
->cbufend
= cb
->cbuf
;
817 cb
->cbufp
= cb
->cbuf
;
828 * Start of generalized filter routines
832 * initializing function to make sure list of filters is empty.
837 FILTER_S
*flt
, *fltn
= gf_master
;
839 while((flt
= fltn
) != NULL
){ /* free list of old filters */
841 fs_give((void **)&flt
);
845 gf_error_string
= NULL
; /* clear previous errors */
846 gf_byte_count
= 0L; /* reset counter */
852 * link the given filter into the filter chain
855 gf_link_filter(filter_t f
, void *data
)
857 FILTER_S
*new, *tail
;
861 * If the system's native EOL convention is CRLF, then there's no
862 * point in passing data thru a filter that's not doing anything
864 if(f
== gf_nvtnl_local
|| f
== gf_local_nvtnl
)
868 new = (FILTER_S
*)fs_get(sizeof(FILTER_S
));
869 memset(new, 0, sizeof(FILTER_S
));
871 new->f
= f
; /* set the function pointer */
872 new->opt
= data
; /* set any optional parameter data */
873 (*f
)(new, GF_RESET
); /* have it setup initial state */
875 if((tail
= gf_master
) != NULL
){ /* or add it to end of existing */
876 while(tail
->next
) /* list */
881 else /* attach new struct to list */
882 gf_master
= new; /* start a new list */
887 * terminal filter, doesn't call any other filters, typically just does
888 * something with the output
891 gf_terminal(FILTER_S
*f
, int flg
)
897 if((*last_filter
)(*op
++) <= 0) /* generic terminal filter */
898 gf_error(errno
? error_description(errno
) : "Error writing pipe");
902 else if(flg
== GF_RESET
)
903 errno
= 0; /* prepare for problems */
908 * set some outside gf_io_t function to the terminal function
909 * for example: a function to write a char to a file or into a buffer
912 gf_set_terminal(gf_io_t f
) /* function to set generic filter */
920 * common function for filter's to make it known that an error
921 * has occurred. Jumps back to gf_pipe with error message.
926 /* let the user know the error passed in s */
928 longjmp(gf_error_state
, 1);
933 * The routine that shoves each byte through the chain of
934 * filters. It sets up error handling, and the terminal function.
935 * Then loops getting bytes with the given function, and passing
936 * it on to the first filter in the chain.
939 gf_pipe(gf_io_t gc
, gf_io_t pc
)
940 /* how to get a character */
944 dprint((4, "-- gf_pipe: "));
947 * set up for any errors a filter may encounter
949 if(setjmp(gf_error_state
)){
950 dprint((4, "ERROR: %s\n",
951 gf_error_string
? gf_error_string
: "NULL"));
952 return(gf_error_string
); /* */
956 * set and link in the terminal filter
959 gf_link_filter(gf_terminal
, NULL
);
962 * while there are chars to process, send them thru the pipe.
963 * NOTE: it's necessary to enclose the loop below in a block
964 * as the GF_INIT macro calls some automatic var's into
965 * existence. It can't be placed at the start of gf_pipe
966 * because its useful for us to be called without filters loaded
967 * when we're just being used to copy bytes between storage
971 GF_INIT(gf_master
, gf_master
);
977 if(!(gf_byte_count
& 0x3ff))
978 /* Under windows we yield to allow event processing.
979 * Progress display is handled through the alarm()
985 GF_PUTC(gf_master
, c
& 0xff);
989 * toss an end-of-data marker down the pipe to give filters
990 * that have any buffered data the opportunity to dump it
992 (void) GF_FLUSH(gf_master
);
993 (*gf_master
->f
)(gf_master
, GF_EOD
);
996 dprint((4, "done.\n"));
997 return(NULL
); /* everything went OK */
1002 * return the number of bytes piped so far
1005 gf_bytes_piped(void)
1007 return(gf_byte_count
);
1012 * filter the given input with the given command
1014 * Args: cmd -- command string to execute
1015 * prepend -- string to prepend to filtered input
1016 * source_so -- storage object containing data to be filtered
1017 * pc -- function to write filtered output with
1018 * aux_filters -- additional filters to pass data thru after "cmd"
1020 * Returns: NULL on success, reason for failure (not alloc'd!) on error
1023 gf_filter(char *cmd
, char *prepend
, STORE_S
*source_so
, gf_io_t pc
,
1024 FILTLIST_S
*aux_filters
, int silent
, int disable_reset
,
1025 void (*pipecb_f
)(PIPE_S
*, int, void *))
1027 unsigned char c
, obuf
[MAX(MB_LEN_MAX
,32)];
1028 int flags
, outchars
, i
;
1029 char *errstr
= NULL
, buf
[MAILTMPLEN
];
1032 #ifdef NON_BLOCKING_IO
1036 dprint((4, "so_filter: \"%s\"\n", cmd
? cmd
: "?"));
1041 * After coming back from user's pipe command we need to convert
1042 * the output from the pipe back to UTF-8.
1044 if(ps_global
->keyboard_charmap
&& strucmp("UTF-8", ps_global
->keyboard_charmap
))
1045 gf_link_filter(gf_utf8
, gf_utf8_opt(ps_global
->keyboard_charmap
));
1047 for( ; aux_filters
&& aux_filters
->filter
; aux_filters
++)
1048 gf_link_filter(aux_filters
->filter
, aux_filters
->data
);
1050 gf_set_terminal(pc
);
1051 gf_link_filter(gf_terminal
, NULL
);
1055 cb
.cbufend
= cb
.cbuf
;
1058 * Spawn filter feeding it data, and reading what it writes.
1060 so_seek(source_so
, 0L, 0);
1061 flags
= PIPE_WRITE
| PIPE_READ
| PIPE_NOSHELL
1062 | (silent
? PIPE_SILENT
: 0)
1063 | (!disable_reset
? PIPE_RESET
: 0);
1065 if((fpipe
= open_system_pipe(cmd
, NULL
, NULL
, flags
, 0, pipecb_f
, pipe_report_error
)) != NULL
){
1067 #ifdef NON_BLOCKING_IO
1069 if(fcntl(fileno(fpipe
->in
.f
), F_SETFL
, NON_BLOCKING_IO
) == -1)
1070 errstr
= "Can't set up non-blocking IO";
1072 if(prepend
&& (fputs(prepend
, fpipe
->out
.f
) == EOF
1073 || fputc('\n', fpipe
->out
.f
) == EOF
))
1074 errstr
= error_description(errno
);
1077 /* if the pipe can't hold a K we're sunk (too bad PIPE_MAX
1078 * isn't ubiquitous ;).
1080 for(n
= 0; !errstr
&& fpipe
->out
.f
&& n
< 1024; n
++)
1081 if(!so_readc(&c
, source_so
)){
1082 fclose(fpipe
->out
.f
);
1083 fpipe
->out
.f
= NULL
;
1087 * Got a UTF-8 character from source_so.
1088 * We need to convert it to the user's locale charset
1089 * and then send the result to the pipe.
1091 if((outchars
= utf8_to_locale((int) c
, &cb
, obuf
, sizeof(obuf
))) != 0)
1092 for(i
= 0; i
< outchars
&& !errstr
; i
++)
1093 if(fputc(obuf
[i
], fpipe
->out
.f
) == EOF
)
1094 errstr
= error_description(errno
);
1098 * Note: We clear errno here and test below, before ferror,
1099 * because *some* stdio implementations consider
1100 * EAGAIN and EWOULDBLOCK equivalent to EOF...
1103 clearerr(fpipe
->in
.f
); /* fix from <cananian@cananian.mit.edu> */
1105 while(!errstr
&& fgets(buf
, sizeof(buf
), fpipe
->in
.f
))
1106 errstr
= gf_filter_puts(buf
);
1108 /* then fgets failed! */
1109 if(!errstr
&& !(errno
== EAGAIN
|| errno
== EWOULDBLOCK
)){
1110 if(feof(fpipe
->in
.f
)) /* nothing else interesting! */
1112 else if(ferror(fpipe
->in
.f
)) /* bummer. */
1113 errstr
= error_description(errno
);
1115 else if(errno
== EAGAIN
|| errno
== EWOULDBLOCK
)
1116 clearerr(fpipe
->in
.f
);
1119 #else /* !NON_BLOCKING_IO */
1121 if(prepend
&& (pipe_puts(prepend
, fpipe
) == EOF
1122 || pipe_putc('\n', fpipe
) == EOF
))
1123 errstr
= error_description(errno
);
1126 * Well, do the best we can, and hope the pipe we're writing
1127 * doesn't fill up before we start reading...
1129 while(!errstr
&& so_readc(&c
, source_so
))
1130 if((outchars
= utf8_to_locale((int) c
, &cb
, obuf
, sizeof(obuf
))) != 0)
1131 for(i
= 0; i
< outchars
&& !errstr
; i
++)
1132 if(pipe_putc(obuf
[i
], fpipe
) == EOF
)
1133 errstr
= error_description(errno
);
1135 if(pipe_close_write(fpipe
))
1136 errstr
= _("Pipe command returned error.");
1138 while(!errstr
&& pipe_gets(buf
, sizeof(buf
), fpipe
))
1139 errstr
= gf_filter_puts(buf
);
1141 #endif /* !NON_BLOCKING_IO */
1143 if(close_system_pipe(&fpipe
, NULL
, pipecb_f
) && !errstr
)
1144 errstr
= _("Pipe command returned error.");
1149 errstr
= _("Error setting up pipe command.");
1156 * gf_filter_puts - write the given string down the filter's pipe
1159 gf_filter_puts(register char *s
)
1161 GF_INIT(gf_master
, gf_master
);
1164 * set up for any errors a filter may encounter
1166 if(setjmp(gf_error_state
)){
1167 dprint((4, "ERROR: gf_filter_puts: %s\n",
1168 gf_error_string
? gf_error_string
: "NULL"));
1169 return(gf_error_string
);
1173 GF_PUTC(gf_master
, (*s
++) & 0xff);
1175 GF_END(gf_master
, gf_master
);
1181 * gf_filter_eod - flush pending data filter's input queue and deliver
1182 * the GF_EOD marker.
1187 GF_INIT(gf_master
, gf_master
);
1188 (void) GF_FLUSH(gf_master
);
1189 (*gf_master
->f
)(gf_master
, GF_EOD
);
1194 * END OF PIPE SUPPORT ROUTINES, BEGINNING OF FILTERS
1196 * Filters MUST use the specified interface (pointer to filter
1197 * structure, the unsigned character buffer in that struct, and a
1198 * cmd flag), and pass each resulting octet to the next filter in the
1199 * chain. Only the terminal filter need not call another filter.
1200 * As a result, filters share a pretty general structure.
1201 * Typically three main conditionals separate initialization from
1202 * data from end-of-data command processing.
1204 * Lastly, being character-at-a-time, they're a little more complex
1205 * to write than filters operating on buffers because some state
1206 * must typically be kept between characters. However, for a
1207 * little bit of complexity here, much convenience is gained later
1208 * as they can be arbitrarily chained together at run time and
1209 * consume few resources (especially memory or disk) as they work.
1210 * (NOTE 951005: even less cpu now that data between filters is passed
1213 * A few notes about implementing filters:
1215 * - A generic filter template looks like:
1218 * gf_xxx_filter(f, flg)
1222 * GF_INIT(f, f->next); // def's var's to speed queue drain
1224 * if(flg == GF_DATA){
1225 * register unsigned char c;
1227 * while(GF_GETC(f, c)){ // macro taking data off input queue
1228 * // operate on c and pass it on here
1229 * GF_PUTC(f->next, c); // macro writing output queue
1232 * GF_END(f, f->next); // macro to sync pointers/offsets
1233 * //WARNING: DO NOT RETURN BEFORE ALL INCOMING DATA'S PROCESSED
1235 * else if(flg == GF_EOD){
1236 * // process any buffered data here and pass it on
1237 * GF_FLUSH(f->next); // flush pending data to next filter
1238 * (*f->next->f)(f->next, GF_EOD);
1240 * else if(flg == GF_RESET){
1241 * // initialize any data in the struct here
1245 * - Any free storage allocated during initialization (typically tied
1246 * to the "line" pointer in FILTER_S) is the filter's responsibility
1247 * to clean up when the GF_EOD command comes through.
1249 * - Filter's must pass GF_EOD they receive on to the next
1250 * filter in the chain so it has the opportunity to flush
1251 * any buffered data.
1253 * - All filters expect NVT end-of-lines. The idea is to prepend
1254 * or append either the gf_local_nvtnl or gf_nvtnl_local
1255 * os-dependant filters to the data on the appropriate end of the
1256 * pipe for the task at hand.
1258 * - NOTE: As of 951004, filters no longer take their input as a single
1259 * char argument, but rather get data to operate on via a vector
1260 * representing the input queue in the FILTER_S structure.
1267 * BASE64 TO BINARY encoding and decoding routines below
1272 * BINARY to BASE64 filter (encoding described in rfc1341)
1275 gf_binary_b64(FILTER_S
*f
, int flg
)
1278 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
1279 GF_INIT(f
, f
->next
);
1282 register unsigned char c
;
1283 register unsigned char t
= f
->t
;
1284 register long n
= f
->n
;
1286 while(GF_GETC(f
, c
)){
1289 case 0 : case 3 : case 6 : case 9 : case 12: case 15: case 18:
1290 case 21: case 24: case 27: case 30: case 33: case 36: case 39:
1292 GF_PUTC(f
->next
, v
[c
>> 2]);
1293 /* byte 1: high 6 bits (1) */
1294 t
= c
<< 4; /* remember high 2 bits for next */
1297 case 1 : case 4 : case 7 : case 10: case 13: case 16: case 19:
1298 case 22: case 25: case 28: case 31: case 34: case 37: case 40:
1300 GF_PUTC(f
->next
, v
[(t
|(c
>>4)) & 0x3f]);
1304 case 2 : case 5 : case 8 : case 11: case 14: case 17: case 20:
1305 case 23: case 26: case 29: case 32: case 35: case 38: case 41:
1307 GF_PUTC(f
->next
, v
[(t
|(c
>> 6)) & 0x3f]);
1308 GF_PUTC(f
->next
, v
[c
& 0x3f]);
1312 if(n
== 45){ /* start a new line? */
1313 GF_PUTC(f
->next
, '\015');
1314 GF_PUTC(f
->next
, '\012');
1323 else if(flg
== GF_EOD
){ /* no more data */
1324 switch (f
->n
% 3) { /* handle trailing bytes */
1325 case 0: /* no trailing bytes */
1329 GF_PUTC(f
->next
, v
[(f
->t
) & 0x3f]);
1330 GF_PUTC(f
->next
, '='); /* byte 3 */
1331 GF_PUTC(f
->next
, '='); /* byte 4 */
1335 GF_PUTC(f
->next
, v
[(f
->t
) & 0x3f]);
1336 GF_PUTC(f
->next
, '='); /* byte 4 */
1342 GF_PUTC(f
->next
, '\015');
1343 GF_PUTC(f
->next
, '\012');
1346 (void) GF_FLUSH(f
->next
);
1347 (*f
->next
->f
)(f
->next
, GF_EOD
);
1349 else if(flg
== GF_RESET
){
1350 dprint((9, "-- gf_reset binary_b64\n"));
1358 * BASE64 to BINARY filter (encoding described in rfc1341)
1361 gf_b64_binary(FILTER_S
*f
, int flg
)
1363 static char v
[] = {65,65,65,65,65,65,65,65,65,65,65,65,65,65,65,65,
1364 65,65,65,65,65,65,65,65,65,65,65,65,65,65,65,65,
1365 65,65,65,65,65,65,65,65,65,65,65,62,65,65,65,63,
1366 52,53,54,55,56,57,58,59,60,61,65,65,65,64,65,65,
1367 65, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,
1368 15,16,17,18,19,20,21,22,23,24,25,65,65,65,65,65,
1369 65,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,
1370 41,42,43,44,45,46,47,48,49,50,51,65,65,65,65,65};
1371 GF_INIT(f
, f
->next
);
1374 register unsigned char c
;
1375 register unsigned char t
= f
->t
;
1376 register int n
= (int) f
->n
;
1377 register int state
= f
->f1
;
1379 while(GF_GETC(f
, c
)){
1384 gf_error("Illegal '=' in base64 text");
1389 /* in range, and a valid value? */
1390 if((c
& ~0x7f) || (c
= v
[c
]) > 63){
1392 switch (n
++) { /* check quantum position */
1394 state
++; /* expect an equal as next char */
1398 n
= 0L; /* restart quantum */
1401 default: /* impossible quantum position */
1402 gf_error("Internal base64 decoder error");
1408 switch (n
++) { /* install based on quantum position */
1409 case 0: /* byte 1: high 6 bits */
1413 case 1: /* byte 1: low 2 bits */
1414 GF_PUTC(f
->next
, (t
|(c
>> 4)));
1415 t
= c
<< 4; /* byte 2: high 4 bits */
1418 case 2: /* byte 2: low 4 bits */
1419 GF_PUTC(f
->next
, (t
|(c
>> 2)));
1420 t
= c
<< 6; /* byte 3: high 2 bits */
1424 GF_PUTC(f
->next
, t
| c
);
1425 n
= 0L; /* reinitialize mechanism */
1436 else if(flg
== GF_EOD
){
1437 (void) GF_FLUSH(f
->next
);
1438 (*f
->next
->f
)(f
->next
, GF_EOD
);
1440 else if(flg
== GF_RESET
){
1441 dprint((9, "-- gf_reset b64_binary\n"));
1442 f
->n
= 0L; /* quantum position */
1443 f
->f1
= 0; /* state holder: equal seen? */
1451 * QUOTED-PRINTABLE ENCODING AND DECODING filters below.
1452 * encoding described in rfc1341
1455 #define GF_MAXLINE 80 /* good buffer size */
1458 * default action for QUOTED-PRINTABLE to 8BIT decoder
1460 #define GF_QP_DEFAULT(f, c) { \
1463 /* reset white space! */ \
1464 (f)->linep = (f)->line; \
1465 *((f)->linep)++ = ' '; \
1467 else if((c) == '='){ \
1471 GF_PUTC((f)->next, (c)); \
1476 * QUOTED-PRINTABLE to 8BIT filter
1479 gf_qp_8bit(FILTER_S
*f
, int flg
)
1482 GF_INIT(f
, f
->next
);
1485 register unsigned char c
;
1486 register int state
= f
->f1
;
1488 while(GF_GETC(f
, c
)){
1491 case DFL
: /* default case */
1493 GF_QP_DEFAULT(f
, c
);
1496 case CCR
: /* non-significant space */
1499 continue; /* go on to next char */
1501 GF_QP_DEFAULT(f
, c
);
1505 if(c
== '\015'){ /* "=\015" is a soft EOL */
1510 if(c
== '='){ /* compatibility clause for old guys */
1511 GF_PUTC(f
->next
, '=');
1516 if(!isxdigit((unsigned char)c
)){ /* must be hex! */
1518 * First character after '=' not a hex digit.
1519 * This ain't right, but we're going to treat it as
1520 * plain old text instead of an '=' followed by hex.
1521 * In other words, they forgot to encode the '='.
1522 * Before 4.60 we just bailed with an error here, but now
1523 * we keep going as long as we are just displaying
1524 * the result (and not saving it or something).
1526 * Wait! The users don't like that. They want to be able
1527 * to use it even if it might be wrong. So just plow
1528 * ahead even if displaying.
1530 * Better have this be a constant string so that if we
1531 * get multiple instances of it in a single message we
1532 * can avoid the too many error messages problem. It
1533 * better be the same message as the one a few lines
1536 * Turn off decoding after encountering such an error and
1537 * just dump the rest of the text as is.
1539 state
= STOP_DECODING
;
1540 GF_PUTC(f
->next
, '=');
1541 GF_PUTC(f
->next
, c
);
1542 q_status_message(SM_ORDER
,3,3,
1543 _("Warning: Non-hexadecimal character in QP encoding!"));
1545 dprint((2, "gf_qp_8bit: warning: non-hex char in QP encoding: char \"%c\" (%d) follows =\n", c
, c
));
1549 if (isdigit ((unsigned char)c
))
1552 f
->t
= c
- (isupper((unsigned char)c
) ? 'A' - 10 : 'a' - 10);
1554 f
->f2
= c
; /* store character in case we have to
1555 back out in !isxdigit below */
1562 if(!isxdigit((unsigned char)c
)){ /* must be hex! */
1563 state
= STOP_DECODING
;
1564 GF_PUTC(f
->next
, '=');
1565 GF_PUTC(f
->next
, f
->f2
);
1566 GF_PUTC(f
->next
, c
);
1567 q_status_message(SM_ORDER
,3,3,
1568 _("Warning: Non-hexadecimal character in QP encoding!"));
1570 dprint((2, "gf_qp_8bit: warning: non-hex char in QP encoding: char \"%c\" (%d) follows =%c\n", c
, c
, f
->f2
));
1574 if (isdigit((unsigned char)c
))
1577 c
-= (isupper((unsigned char)c
) ? 'A' - 10 : 'a' - 10);
1579 GF_PUTC(f
->next
, c
+ (f
->t
<< 4));
1583 if(c
== ' '){ /* toss it in with other spaces */
1584 if(f
->linep
- f
->line
< GF_MAXLINE
)
1585 *(f
->linep
)++ = ' ';
1590 if(c
== '\015'){ /* not our white space! */
1591 f
->linep
= f
->line
; /* reset buffer */
1592 GF_PUTC(f
->next
, '\015');
1596 /* the spaces are ours, write 'em */
1597 f
->n
= f
->linep
- f
->line
;
1599 GF_PUTC(f
->next
, ' ');
1601 GF_QP_DEFAULT(f
, c
); /* take care of 'c' in default way */
1604 case STOP_DECODING
:
1605 GF_PUTC(f
->next
, c
);
1613 else if(flg
== GF_EOD
){
1614 fs_give((void **)&(f
->line
));
1615 (void) GF_FLUSH(f
->next
);
1616 (*f
->next
->f
)(f
->next
, GF_EOD
);
1618 else if(flg
== GF_RESET
){
1619 dprint((9, "-- gf_reset qp_8bit\n"));
1621 f
->linep
= f
->line
= (char *)fs_get(GF_MAXLINE
* sizeof(char));
1628 * USEFUL MACROS TO HELP WITH QP ENCODING
1631 #define QP_MAXL 75 /* 76th place only for continuation */
1634 * Macro to test and wrap long quoted printable lines
1636 #define GF_8BIT_WRAP(f) { \
1637 GF_PUTC((f)->next, '='); \
1638 GF_PUTC((f)->next, '\015'); \
1639 GF_PUTC((f)->next, '\012'); \
1643 * write a quoted octet in QUOTED-PRINTABLE encoding, adding soft
1644 * line break if needed.
1646 #define GF_8BIT_PUT_QUOTE(f, c) { \
1647 if(((f)->n += 3) > QP_MAXL){ \
1649 (f)->n = 3; /* set line count */ \
1651 GF_PUTC((f)->next, '='); \
1652 GF_PUTC((f)->next, HEX_CHAR1(c)); \
1653 GF_PUTC((f)->next, HEX_CHAR2(c)); \
1657 * just write an ordinary octet in QUOTED-PRINTABLE, wrapping line
1660 #define GF_8BIT_PUT(f, c) { \
1661 if((++(f->n)) > QP_MAXL){ \
1665 if(f->n == 1L && c == '.'){ \
1666 GF_8BIT_PUT_QUOTE(f, c); \
1670 GF_PUTC(f->next, c); \
1675 * default action for 8bit to quoted printable encoder
1677 #define GF_8BIT_DEFAULT(f, c) if((c) == ' '){ \
1680 else if(c == '\015'){ \
1683 else if(iscntrl(c & 0x7f) || (c == 0x7f) \
1684 || (c & 0x80) || (c == '=')){ \
1685 GF_8BIT_PUT_QUOTE(f, c); \
1688 GF_8BIT_PUT(f, c); \
1693 * 8BIT to QUOTED-PRINTABLE filter
1696 gf_8bit_qp(FILTER_S
*f
, int flg
)
1698 short dummy_dots
= 0, dummy_dmap
= 1;
1699 GF_INIT(f
, f
->next
);
1702 register unsigned char c
;
1703 register int state
= f
->f1
;
1705 while(GF_GETC(f
, c
)){
1707 /* keep track of "^JFrom " */
1708 Find_Froms(f
->t
, dummy_dots
, f
->f2
, dummy_dmap
, c
);
1711 case DFL
: /* handle ordinary case */
1712 GF_8BIT_DEFAULT(f
, c
);
1715 case CCR
: /* true line break? */
1718 GF_PUTC(f
->next
, '\015');
1719 GF_PUTC(f
->next
, '\012');
1722 else{ /* nope, quote the CR */
1723 GF_8BIT_PUT_QUOTE(f
, '\015');
1724 GF_8BIT_DEFAULT(f
, c
); /* and don't forget about c! */
1730 if(c
== '\015' || f
->t
){ /* handle the space */
1731 GF_8BIT_PUT_QUOTE(f
, ' ');
1732 f
->t
= 0; /* reset From flag */
1735 GF_8BIT_PUT(f
, ' ');
1737 GF_8BIT_DEFAULT(f
, c
); /* handle 'c' in the default way */
1745 else if(flg
== GF_EOD
){
1748 GF_8BIT_PUT_QUOTE(f
, '\015'); /* write the last cr */
1752 GF_8BIT_PUT_QUOTE(f
, ' '); /* write the last space */
1756 (void) GF_FLUSH(f
->next
);
1757 (*f
->next
->f
)(f
->next
, GF_EOD
);
1759 else if(flg
== GF_RESET
){
1760 dprint((9, "-- gf_reset 8bit_qp\n"));
1761 f
->f1
= DFL
; /* state from last character */
1762 f
->f2
= 1; /* state of "^NFrom " bitmap */
1764 f
->n
= 0L; /* number of chars in current line */
1769 * This filter converts characters in one character set (the character
1770 * set of a message, for example) to another (the user's character set).
1773 gf_convert_8bit_charset(FILTER_S
*f
, int flg
)
1775 static unsigned char *conv_table
= NULL
;
1776 GF_INIT(f
, f
->next
);
1779 register unsigned char c
;
1781 while(GF_GETC(f
, c
)){
1782 GF_PUTC(f
->next
, conv_table
? conv_table
[c
] : c
);
1787 else if(flg
== GF_EOD
){
1788 (void) GF_FLUSH(f
->next
);
1789 (*f
->next
->f
)(f
->next
, GF_EOD
);
1791 else if(flg
== GF_RESET
){
1792 dprint((9, "-- gf_reset convert_8bit_charset\n"));
1793 conv_table
= (f
->opt
) ? (unsigned char *) (f
->opt
) : NULL
;
1799 typedef struct _utf8c_s
{
1806 * This filter converts characters in UTF-8 to an 8-bit or 16-bit charset.
1807 * Characters missing from the destination set, and invalid UTF-8 sequences,
1808 * will be converted to "?".
1811 gf_convert_utf8_charset(FILTER_S
*f
, int flg
)
1813 static unsigned short *conv_table
= NULL
;
1814 static int report_err
= 0;
1815 register int more
= f
->f2
;
1816 register long u
= f
->n
;
1819 * "more" is the number of subsequent octets needed to complete a character,
1820 * it is stored in f->f2.
1821 * "u" is the accumulated Unicode character, it is stored in f->n
1824 GF_INIT(f
, f
->next
);
1827 register unsigned char c
;
1829 while(GF_GETC(f
, c
)){
1830 if(!conv_table
){ /* can't do much if no conversion table */
1831 GF_PUTC(f
->next
, c
);
1833 /* UTF-8 continuation? */
1834 else if((c
> 0x7f) && (c
< 0xc0)){
1836 u
<<= 6; /* shift current value by 6 bits */
1838 if (!--more
){ /* last octet? */
1839 if(u
>= 0xffff || (u
= conv_table
[u
]) == NOCHAR
){
1841 * non-BMP character or a UTF-8 character
1842 * which is not representable in the
1843 * charset we're converting to.
1848 fs_give((void **) &f
->opt
);
1850 /* TRANSLATORS: error while translating from one
1851 character set to another, for example from UTF-8
1852 to ISO-2022-JP or something like that. */
1853 gf_error(_("translation error"));
1859 c
= (unsigned char) (u
>> 8);
1860 GF_PUTC(f
->next
, c
);
1863 c
= (unsigned char) u
& 0xff;
1866 GF_PUTC(f
->next
, c
);
1869 else{ /* continuation when not in progress */
1870 GF_PUTC(f
->next
, '?');
1874 if(more
){ /* incomplete UTF-8 character */
1875 GF_PUTC(f
->next
, '?');
1878 if(c
< 0x80){ /* U+0000 - U+007f */
1879 GF_PUTC(f
->next
, c
);
1881 else if(c
< 0xe0){ /* U+0080 - U+07ff */
1882 u
= c
& 0x1f; /* first 5 bits of 12 */
1885 else if(c
< 0xf0){ /* U+1000 - U+ffff */
1886 u
= c
& 0x0f; /* first 4 bits of 16 */
1889 /* in case we ever support non-BMP Unicode */
1890 else if (c
< 0xf8){ /* U+10000 - U+10ffff */
1891 u
= c
& 0x07; /* first 3 bits of 20.5 */
1894 #if 0 /* ISO 10646 not in Unicode */
1895 else if (c
< 0xfc){ /* ISO 10646 20000 - 3ffffff */
1896 u
= c
& 0x03; /* first 2 bits of 26 */
1899 else if (c
< 0xfe){ /* ISO 10646 4000000 - 7fffffff */
1900 u
= c
& 0x03; /* first 2 bits of 26 */
1904 else{ /* not in Unicode */
1905 GF_PUTC(f
->next
, '?');
1914 else if(flg
== GF_EOD
){
1915 (void) GF_FLUSH(f
->next
);
1917 fs_give((void **) &f
->opt
);
1918 (*f
->next
->f
)(f
->next
, GF_EOD
);
1920 else if(flg
== GF_RESET
){
1921 dprint((9, "-- gf_reset convert_utf8_charset\n"));
1922 conv_table
= ((UTF8C_S
*) f
->opt
)->conv_table
;
1923 report_err
= ((UTF8C_S
*) f
->opt
)->report_err
;
1931 gf_convert_utf8_charset_opt(void *table
, int report_err
)
1935 utf8c
= (UTF8C_S
*) fs_get(sizeof(UTF8C_S
));
1936 utf8c
->conv_table
= table
;
1937 utf8c
->report_err
= report_err
;
1938 return((void *) utf8c
);
1943 * ISO-2022-JP to EUC (on Unix) or Shift-JIS (on PC) filter
1945 * The routine is call ..._to_euc but it is really to either euc (unix Pine)
1946 * or to Shift-JIS (if PC-Pine).
1949 gf_2022_jp_to_euc(FILTER_S
*f
, int flg
)
1951 register unsigned char c
;
1952 register int state
= f
->f1
;
1955 * f->t lit means we're in middle of decoding a sequence of characters.
1956 * f->f2 keeps track of first character of pair for Shift-JIS.
1957 * f->f1 is the state.
1960 GF_INIT(f
, f
->next
);
1963 while(GF_GETC(f
, c
)){
1965 case ESC
: /* saw ESC */
1966 if(!f
->t
&& c
== '$')
1968 else if(f
->t
&& c
== '(')
1971 GF_PUTC(f
->next
, '\033');
1972 GF_PUTC(f
->next
, c
);
1978 case ESCDOL
: /* saw ESC $ */
1979 if(c
== 'B' || c
== '@'){
1981 f
->t
= 1; /* filtering into euc */
1982 f
->f2
= -1; /* first character of pair */
1985 GF_PUTC(f
->next
, '\033');
1986 GF_PUTC(f
->next
, '$');
1987 GF_PUTC(f
->next
, c
);
1993 case ESCPAR
: /* saw ESC ( */
1994 if(c
== 'B' || c
== 'J' || c
== 'H'){
1996 f
->t
= 0; /* done filtering */
1999 GF_PUTC(f
->next
, '\033'); /* Don't set hibit for */
2000 GF_PUTC(f
->next
, '('); /* escape sequences, which */
2001 GF_PUTC(f
->next
, c
); /* this appears to be. */
2006 case EUC
: /* filtering into euc */
2010 #ifdef _WINDOWS /* Shift-JIS */
2011 c
&= 0x7f; /* 8-bit can't win */
2012 if (f
->f2
>= 0){ /* second of a pair? */
2013 int rowOffset
= (f
->f2
< 95) ? 112 : 176;
2014 int cellOffset
= (f
->f2
% 2) ? ((c
> 95) ? 32 : 31)
2017 GF_PUTC(f
->next
, ((f
->f2
+ 1) >> 1) + rowOffset
);
2018 GF_PUTC(f
->next
, c
+ cellOffset
);
2019 f
->f2
= -1; /* restart */
2021 else if(c
> 0x20 && c
< 0x7f)
2022 f
->f2
= c
; /* first of pair */
2024 GF_PUTC(f
->next
, c
); /* write CTL as itself */
2028 GF_PUTC(f
->next
, (c
> 0x20 && c
< 0x7f) ? c
| 0x80 : c
);
2039 GF_PUTC(f
->next
, c
);
2048 else if(flg
== GF_EOD
){
2051 GF_PUTC(f
->next
, '\033');
2055 GF_PUTC(f
->next
, '\033');
2056 GF_PUTC(f
->next
, '$');
2060 GF_PUTC(f
->next
, '\033'); /* Don't set hibit for */
2061 GF_PUTC(f
->next
, '('); /* escape sequences. */
2065 (void) GF_FLUSH(f
->next
);
2066 (*f
->next
->f
)(f
->next
, GF_EOD
);
2068 else if(flg
== GF_RESET
){
2069 dprint((9, "-- gf_reset jp_to_euc\n"));
2070 f
->f1
= DFL
; /* state */
2071 f
->t
= 0; /* not translating to euc */
2077 * EUC (on Unix) or Shift-JIS (on PC) to ISO-2022-JP filter
2080 gf_native8bitjapanese_to_2022_jp(FILTER_S
*f
, int flg
)
2083 gf_sjis_to_2022_jp(f
, flg
);
2085 gf_euc_to_2022_jp(f
, flg
);
2091 gf_euc_to_2022_jp(FILTER_S
*f
, int flg
)
2093 register unsigned char c
;
2096 * f->t lit means we've sent the start esc seq but not the end seq.
2097 * f->f2 keeps track of first character of pair for Shift-JIS.
2100 GF_INIT(f
, f
->next
);
2103 while(GF_GETC(f
, c
)){
2106 GF_PUTC(f
->next
, c
& 0x7f);
2109 GF_PUTC(f
->next
, '\033');
2110 GF_PUTC(f
->next
, '(');
2111 GF_PUTC(f
->next
, 'B');
2112 GF_PUTC(f
->next
, c
);
2119 GF_PUTC(f
->next
, '\033');
2120 GF_PUTC(f
->next
, '$');
2121 GF_PUTC(f
->next
, 'B');
2122 GF_PUTC(f
->next
, c
& 0x7f);
2126 GF_PUTC(f
->next
, c
);
2133 else if(flg
== GF_EOD
){
2135 GF_PUTC(f
->next
, '\033');
2136 GF_PUTC(f
->next
, '(');
2137 GF_PUTC(f
->next
, 'B');
2142 (void) GF_FLUSH(f
->next
);
2143 (*f
->next
->f
)(f
->next
, GF_EOD
);
2145 else if(flg
== GF_RESET
){
2146 dprint((9, "-- gf_reset euc_to_jp\n"));
2153 gf_sjis_to_2022_jp(FILTER_S
*f
, int flg
)
2155 register unsigned char c
;
2158 * f->t lit means we've sent the start esc seq but not the end seq.
2159 * f->f2 keeps track of first character of pair for Shift-JIS.
2162 GF_INIT(f
, f
->next
);
2165 while(GF_GETC(f
, c
)){
2167 if(f
->f2
>= 0){ /* second of a pair? */
2168 int adjust
= c
< 159;
2169 int rowOffset
= f
->f2
< 160 ? 112 : 176;
2170 int cellOffset
= adjust
? (c
> 127 ? 32 : 31) : 126;
2172 GF_PUTC(f
->next
, ((f
->f2
- rowOffset
) << 1) - adjust
);
2173 GF_PUTC(f
->next
, c
- cellOffset
);
2177 f
->f2
= c
; /* remember first of pair */
2180 GF_PUTC(f
->next
, '\033');
2181 GF_PUTC(f
->next
, '(');
2182 GF_PUTC(f
->next
, 'B');
2183 GF_PUTC(f
->next
, c
);
2190 GF_PUTC(f
->next
, '\033');
2191 GF_PUTC(f
->next
, '$');
2192 GF_PUTC(f
->next
, 'B');
2197 GF_PUTC(f
->next
, c
);
2204 else if(flg
== GF_EOD
){
2206 GF_PUTC(f
->next
, '\033');
2207 GF_PUTC(f
->next
, '(');
2208 GF_PUTC(f
->next
, 'B');
2213 (void) GF_FLUSH(f
->next
);
2214 (*f
->next
->f
)(f
->next
, GF_EOD
);
2216 else if(flg
== GF_RESET
){
2217 dprint((9, "-- gf_reset sjis_to_jp\n"));
2226 * Various charset to UTF-8 Translation filter
2230 * utf8 conversion options
2232 typedef struct _utf8_s
{
2237 #define UTF8_BLOCK 1024
2238 #define UTF8_EOB(f) ((f)->line + (f)->f2 - 1)
2239 #define UTF8_ADD(f, c) \
2242 f->f2 += UTF8_BLOCK; \
2243 fs_resize((void **)&f->line, \
2244 (size_t) f->f2 * sizeof(char)); \
2245 eobuf = UTF8_EOB(f); \
2246 p = eobuf - UTF8_BLOCK; \
2250 #define GF_UTF8_FLUSH(f) { \
2252 SIZEDTEXT intext, outtext; \
2253 intext.data = (unsigned char *) f->line; \
2254 intext.size = p - f->line; \
2255 memset(&outtext, 0, sizeof(SIZEDTEXT)); \
2256 if(!((UTF8_S *) f->opt)->charset){ \
2257 for(n = 0; n < intext.size; n++) \
2258 GF_PUTC(f->next, (intext.data[n] & 0x80) ? '?' : intext.data[n]); \
2260 else if(utf8_text_cs(&intext, ((UTF8_S *) f->opt)->charset, &outtext, NULL, NULL)){ \
2261 for(n = 0; n < outtext.size; n++) \
2262 GF_PUTC(f->next, outtext.data[n]); \
2263 if(outtext.data && intext.data != outtext.data) \
2264 fs_give((void **) &outtext.data); \
2267 for(n = 0; n < intext.size; n++) \
2268 GF_PUTC(f->next, '?'); \
2274 * gf_utf8 - text in specified charset to to UTF-8 filter
2275 * Process line-at-a-time rather than character
2276 * because ISO-2022-JP. Call utf8_text_cs by hand
2277 * rather than utf8_text to reduce the cost of
2278 * utf8_charset() for each line.
2281 gf_utf8(FILTER_S
*f
, int flg
)
2283 register char *p
= f
->linep
;
2284 register char *eobuf
= UTF8_EOB(f
);
2285 GF_INIT(f
, f
->next
);
2288 register int state
= f
->f1
;
2289 register unsigned char c
;
2291 while(GF_GETC(f
, c
)){
2299 GF_PUTC(f
->next
, '\015');
2300 GF_PUTC(f
->next
, '\012');
2303 UTF8_ADD(f
, '\015');
2321 else if(flg
== GF_EOD
){
2326 fs_give((void **) &f
->line
);
2327 fs_give((void **) &f
->opt
);
2328 (void) GF_FLUSH(f
->next
);
2329 (*f
->next
->f
)(f
->next
, GF_EOD
);
2332 dprint((9, "-- gf_reset utf8\n"));
2334 f
->f2
= UTF8_BLOCK
; /* input buffer length */
2335 f
->line
= p
= (char *) fs_get(f
->f2
* sizeof(char));
2343 gf_utf8_opt(char *charset
)
2347 utf8
= (UTF8_S
*) fs_get(sizeof(UTF8_S
));
2349 utf8
->charset
= (CHARSET
*) utf8_charset(charset
);
2352 * When we get 8-bit non-ascii characters but it is supposed to
2353 * be ascii we want it to turn into question marks, not
2354 * just behave as if it is UTF-8 which is what happens
2355 * with ascii because there is no translation table.
2356 * So we need to catch the ascii special case here.
2358 if(utf8
->charset
&& utf8
->charset
->type
== CT_ASCII
)
2359 utf8
->charset
= NULL
;
2361 return((void *) utf8
);
2366 * RICHTEXT-TO-PLAINTEXT filter
2370 * option to be used by rich2plain (NOTE: if this filter is ever
2371 * used more than once in a pipe, all instances will have the same
2376 /*----------------------------------------------------------------------
2377 richtext to plaintext filter
2382 This basically removes all richtext formatting. A cute hack is used
2383 to get bold and underlining to work.
2384 Further work could be done to handle things like centering and right
2385 and left flush, but then it could no longer be done in place. This
2386 operates on text *with* CRLF's.
2388 WARNING: does not wrap lines!
2391 gf_rich2plain(FILTER_S
*f
, int flg
)
2393 static int rich_bold_on
= 0, rich_uline_on
= 0;
2395 /* BUG: quote incoming \255 values */
2396 GF_INIT(f
, f
->next
);
2399 register unsigned char c
;
2400 register int state
= f
->f1
;
2403 plain
= f
->opt
? (*(int *) f
->opt
) : 0;
2405 while(GF_GETC(f
, c
)){
2408 case TOKEN
: /* collect a richtext token */
2409 if(c
== '>'){ /* what should we do with it? */
2410 state
= DFL
; /* return to default next time */
2411 *(f
->linep
) = '\0'; /* cap off token */
2412 if(f
->line
[0] == 'l' && f
->line
[1] == 't'){
2413 GF_PUTC(f
->next
, '<'); /* literal '<' */
2415 else if(f
->line
[0] == 'n' && f
->line
[1] == 'l'){
2416 GF_PUTC(f
->next
, '\015');/* newline! */
2417 GF_PUTC(f
->next
, '\012');
2419 else if(!strcmp("comment", f
->line
)){
2422 else if(!strcmp("/comment", f
->line
)){
2425 else if(!strcmp("/paragraph", f
->line
)) {
2426 GF_PUTC(f
->next
, '\r');
2427 GF_PUTC(f
->next
, '\n');
2428 GF_PUTC(f
->next
, '\r');
2429 GF_PUTC(f
->next
, '\n');
2431 else if(!plain
/* gf_rich_plain */){
2432 if(!strcmp(f
->line
, "bold")) {
2433 GF_PUTC(f
->next
, TAG_EMBED
);
2434 GF_PUTC(f
->next
, TAG_BOLDON
);
2436 } else if(!strcmp(f
->line
, "/bold")) {
2437 GF_PUTC(f
->next
, TAG_EMBED
);
2438 GF_PUTC(f
->next
, TAG_BOLDOFF
);
2440 } else if(!strcmp(f
->line
, "italic")) {
2441 GF_PUTC(f
->next
, TAG_EMBED
);
2442 GF_PUTC(f
->next
, TAG_ULINEON
);
2444 } else if(!strcmp(f
->line
, "/italic")) {
2445 GF_PUTC(f
->next
, TAG_EMBED
);
2446 GF_PUTC(f
->next
, TAG_ULINEOFF
);
2448 } else if(!strcmp(f
->line
, "underline")) {
2449 GF_PUTC(f
->next
, TAG_EMBED
);
2450 GF_PUTC(f
->next
, TAG_ULINEON
);
2452 } else if(!strcmp(f
->line
, "/underline")) {
2453 GF_PUTC(f
->next
, TAG_EMBED
);
2454 GF_PUTC(f
->next
, TAG_ULINEOFF
);
2458 /* else we just ignore the token! */
2460 f
->linep
= f
->line
; /* reset token buffer */
2462 else{ /* add char to token */
2463 if(f
->linep
- f
->line
> 40){
2464 /* What? rfc1341 says 40 char tokens MAX! */
2465 fs_give((void **)&(f
->line
));
2466 gf_error("Richtext token over 40 characters");
2470 *(f
->linep
)++ = isupper((unsigned char)c
) ? c
-'A'+'a' : c
;
2475 state
= DFL
; /* back to default next time */
2476 if(c
== '\012'){ /* treat as single space? */
2477 GF_PUTC(f
->next
, ' ');
2480 /* fall thru to process c */
2486 else if(c
== '\015')
2488 else if(!f
->f2
) /* not in comment! */
2489 GF_PUTC(f
->next
, c
);
2498 else if(flg
== GF_EOD
){
2499 if((f
->f1
= (f
->linep
!= f
->line
)) != 0){
2500 /* incomplete token!! */
2501 gf_error("Incomplete token in richtext");
2506 GF_PUTC(f
->next
, TAG_EMBED
);
2507 GF_PUTC(f
->next
, TAG_ULINEOFF
);
2511 GF_PUTC(f
->next
, TAG_EMBED
);
2512 GF_PUTC(f
->next
, TAG_BOLDOFF
);
2516 fs_give((void **)&(f
->line
));
2517 (void) GF_FLUSH(f
->next
);
2518 (*f
->next
->f
)(f
->next
, GF_EOD
);
2520 else if(flg
== GF_RESET
){
2521 dprint((9, "-- gf_reset rich2plain\n"));
2522 f
->f1
= DFL
; /* state */
2523 f
->f2
= 0; /* set means we're in a comment */
2524 f
->linep
= f
->line
= (char *)fs_get(45 * sizeof(char));
2530 * function called from the outside to set
2531 * richtext filter's options
2534 gf_rich2plain_opt(int *plain
)
2536 return((void *) plain
);
2542 * ENRICHED-TO-PLAIN text filter
2545 #define TEF_QUELL 0x01
2546 #define TEF_NOFILL 0x02
2550 /*----------------------------------------------------------------------
2551 enriched text to plain text filter (ala rfc1523)
2553 Args: f -- state and input data
2556 This basically removes all enriched formatting. A cute hack is used
2557 to get bold and underlining to work.
2559 Further work could be done to handle things like centering and right
2560 and left flush, but then it could no longer be done in place. This
2561 operates on text *with* CRLF's.
2563 WARNING: does not wrap lines!
2566 gf_enriched2plain(FILTER_S
*f
, int flg
)
2568 static int enr_uline_on
= 0, enr_bold_on
= 0;
2570 /* BUG: quote incoming \255 values */
2571 GF_INIT(f
, f
->next
);
2574 register unsigned char c
;
2575 register int state
= f
->f1
;
2578 plain
= f
->opt
? (*(int *) f
->opt
) : 0;
2580 while(GF_GETC(f
, c
)){
2583 case TOKEN
: /* collect a richtext token */
2584 if(c
== '>'){ /* what should we do with it? */
2585 int off
= *f
->line
== '/';
2586 char *token
= f
->line
+ (off
? 1 : 0);
2589 if(!strcmp("param", token
)){
2591 f
->f2
&= ~TEF_QUELL
;
2595 else if(!strcmp("nofill", token
)){
2597 f
->f2
&= ~TEF_NOFILL
;
2599 f
->f2
|= TEF_NOFILL
;
2601 else if(!plain
/* gf_enriched_plain */){
2602 /* Following is a cute hack or two to get
2603 bold and underline on the screen.
2604 See Putline0n() where these codes are
2606 if(!strcmp("bold", token
)) {
2607 GF_PUTC(f
->next
, TAG_EMBED
);
2608 GF_PUTC(f
->next
, off
? TAG_BOLDOFF
: TAG_BOLDON
);
2609 enr_bold_on
= off
? 0 : 1;
2610 } else if(!strcmp("italic", token
)) {
2611 GF_PUTC(f
->next
, TAG_EMBED
);
2612 GF_PUTC(f
->next
, off
? TAG_ULINEOFF
: TAG_ULINEON
);
2613 enr_uline_on
= off
? 0 : 1;
2614 } else if(!strcmp("underline", token
)) {
2615 GF_PUTC(f
->next
, TAG_EMBED
);
2616 GF_PUTC(f
->next
, off
? TAG_ULINEOFF
: TAG_ULINEON
);
2617 enr_uline_on
= off
? 0 : 1;
2620 /* else we just ignore the token! */
2622 f
->linep
= f
->line
; /* reset token buffer */
2624 else if(c
== '<'){ /* literal '<'? */
2625 if(f
->linep
== f
->line
){
2626 GF_PUTC(f
->next
, '<');
2630 fs_give((void **)&(f
->line
));
2631 gf_error("Malformed Enriched text: unexpected '<'");
2635 else{ /* add char to token */
2636 if(f
->linep
- f
->line
> 60){ /* rfc1523 says 60 MAX! */
2637 fs_give((void **)&(f
->line
));
2638 gf_error("Malformed Enriched text: token too long");
2642 *(f
->linep
)++ = isupper((unsigned char)c
) ? c
-'A'+'a' : c
;
2647 if(c
!= '\012'){ /* treat as single space? */
2648 state
= DFL
; /* lone cr? */
2649 f
->f2
&= ~TEF_QUELL
;
2650 GF_PUTC(f
->next
, '\015');
2658 if(c
== '\015'){ /* treat as single space? */
2659 state
= CCR
; /* repeat crlf's mean real newlines */
2661 GF_PUTC(f
->next
, '\r');
2662 GF_PUTC(f
->next
, '\n');
2667 if(!((f
->f2
) & TEF_QUELL
))
2668 GF_PUTC(f
->next
, ' ');
2670 f
->f2
&= ~TEF_QUELL
;
2673 /* fall thru to take care of 'c' */
2680 else if(c
== '\015' && (!((f
->f2
) & TEF_NOFILL
)))
2682 else if(!((f
->f2
) & TEF_QUELL
))
2683 GF_PUTC(f
->next
, c
);
2692 else if(flg
== GF_EOD
){
2693 if((f
->f1
= (f
->linep
!= f
->line
)) != 0){
2694 /* incomplete token!! */
2695 gf_error("Incomplete token in richtext");
2699 GF_PUTC(f
->next
, TAG_EMBED
);
2700 GF_PUTC(f
->next
, TAG_ULINEOFF
);
2704 GF_PUTC(f
->next
, TAG_EMBED
);
2705 GF_PUTC(f
->next
, TAG_BOLDOFF
);
2709 /* Make sure we end with a newline so everything gets flushed */
2710 GF_PUTC(f
->next
, '\015');
2711 GF_PUTC(f
->next
, '\012');
2713 fs_give((void **)&(f
->line
));
2715 (void) GF_FLUSH(f
->next
);
2716 (*f
->next
->f
)(f
->next
, GF_EOD
);
2718 else if(flg
== GF_RESET
){
2719 dprint((9, "-- gf_reset enriched2plain\n"));
2720 f
->f1
= DFL
; /* state */
2721 f
->f2
= 0; /* set means we're in a comment */
2722 f
->linep
= f
->line
= (char *)fs_get(65 * sizeof(char));
2728 * function called from the outside to set
2729 * richtext filter's options
2732 gf_enriched2plain_opt(int *plain
)
2734 return((void *) plain
);
2740 * HTML-TO-PLAIN text filter
2744 /* OK, here's the plan:
2746 * a universal output function handles writing chars and worries
2749 * a unversal element collector reads chars and collects params
2750 * and dispatches the appropriate element handler.
2752 * element handlers are stacked. The most recently dispatched gets
2753 * first crack at the incoming character stream. It passes bytes it's
2754 * done with or not interested in to the next
2756 * installs that handler as the current one collecting data...
2758 * stacked handlers take their params from the element collector and
2759 * accept chars or do whatever they need to do. Sort of a vertical
2760 * piping? recursion-like? hmmm.
2762 * at least I think this is how it'll work. tres simple, non?
2768 * Some important constants
2770 #define HTML_BUF_LEN 2048 /* max scratch buffer length */
2771 #define MAX_ENTITY 20 /* maximum length of an entity */
2772 #define MAX_ELEMENT 72 /* maximum length of an element */
2773 #define HTML_MOREDATA 0 /* expect more entity data */
2774 #define HTML_ENTITY 1 /* valid entity collected */
2775 #define HTML_BADVALUE 0x0100 /* good data, but bad entity value */
2776 #define HTML_BADDATA 0x0200 /* bad data found looking for entity */
2777 #define HTML_LITERAL 0x0400 /* Literal character value */
2778 #define HTML_NEWLINE 0x010A /* hard newline */
2779 #define HTML_DOBOLD 0x0400 /* Start Bold display */
2780 #define HTML_ID_GET 0 /* indent func: return current val */
2781 #define HTML_ID_SET 1 /* indent func: set to absolute val */
2782 #define HTML_ID_INC 2 /* indent func: increment by val */
2783 #define HTML_HX_CENTER 0x0001
2784 #define HTML_HX_ULINE 0x0002
2785 #define RSS_ITEM_LIMIT 20 /* RSS 2.0 ITEM depth limit */
2788 /* types of lists that we will support */
2789 #define LIST_DECIMAL (long) 0
2790 #define LIST_ALPHALO (long) 1
2791 #define LIST_ALPHAUP (long) 2
2792 #define LIST_ROMANLO (long) 3
2793 #define LIST_ROMANUP (long) 4
2794 #define LIST_UNKNOWN (long) 10
2797 * Handler data, state information including function that uses it
2799 typedef struct handler_s
{
2800 FILTER_S
*html_data
;
2805 struct handler_s
*below
;
2809 * Element Property structure
2811 typedef struct _element_properties
{
2814 int (*handler
)(HANDLER_S
*, int, int);
2815 unsigned blocklevel
:1;
2816 unsigned alternate
:1;
2820 * Types used to manage HTML parsing
2822 static void html_handoff(HANDLER_S
*, int);
2826 * to help manage line wrapping.
2828 typedef struct _wrap_line
{
2829 char *buf
; /* buf to collect wrapped text */
2830 int used
, /* number of chars in buf */
2831 width
, /* text's width as displayed */
2832 len
; /* length of allocated buf */
2837 * to help manage centered text
2839 typedef struct _center_s
{
2840 WRAPLINE_S line
; /* buf to assembled centered text */
2841 WRAPLINE_S word
; /* word being to append to Line */
2848 * Collector data and state information
2850 typedef struct collector_s
{
2851 char buf
[HTML_BUF_LEN
]; /* buffer to collect data */
2852 int len
; /* length of that buffer */
2853 unsigned unquoted_data
:1; /* parameter is not quoted... */
2854 unsigned end_tag
:1; /* collecting a closing tag */
2855 unsigned hit_equal
:1; /* collecting right half of attrib */
2856 unsigned mkup_decl
:1; /* markup declaration */
2857 unsigned start_comment
:1; /* markup declaration comment */
2858 unsigned end_comment
:1; /* legit comment format */
2859 unsigned hyphen
:1; /* markup hyphen read */
2860 unsigned badform
:1; /* malformed markup element */
2861 unsigned overrun
:1; /* Overran buf above */
2862 unsigned proc_inst
:1; /* XML processing instructions */
2863 unsigned empty
:1; /* empty element */
2864 unsigned was_quoted
:1; /* basically to catch null string */
2865 char quoted
; /* quoted element param value */
2866 char *element
; /* element's collected name */
2867 PARAMETER
*attribs
; /* element's collected attributes */
2868 PARAMETER
*cur_attrib
; /* attribute now being collected */
2873 * State information for all element handlers
2875 typedef struct html_data
{
2876 HANDLER_S
*h_stack
; /* handler list */
2877 CLCTR_S
*el_data
; /* element collector data */
2878 CENTER_S
*centered
; /* struct to manage centered text */
2879 int (*token
)(FILTER_S
*, int);
2880 char quoted
; /* quoted, by either ' or ", text */
2881 short indent_level
; /* levels of indention */
2882 int in_anchor
; /* text now being written to anchor */
2883 int blanks
; /* Consecutive blank line count */
2884 int wrapcol
; /* column to wrap lines on */
2885 int *prefix
; /* buffer containing Anchor prefix */
2887 long line_bufsize
; /* current size of the line buffer */
2890 int state
; /* embedded data state */
2891 char *color
; /* embedded color pointer */
2893 CBUF_S cb
; /* utf8->ucs4 conversion state */
2894 unsigned wrapstate
:1; /* whether or not to wrap output */
2895 unsigned li_pending
:1; /* <LI> next token expected */
2896 unsigned de_pending
:1; /* <DT> or <DD> next token expected */
2897 unsigned bold_on
:1; /* currently bolding text */
2898 unsigned uline_on
:1; /* currently underlining text */
2899 unsigned center
:1; /* center output text */
2900 unsigned bitbucket
:1; /* Ignore input */
2901 unsigned head
:1; /* In doc's HEAD */
2902 unsigned body
:1; /* In doc's BODY */
2903 unsigned alt_entity
:1; /* use alternative entity values */
2904 unsigned wrote
:1; /* anything witten yet? */
2909 * HTML filter options
2911 typedef struct _html_opts
{
2912 char *base
; /* Base URL for this html file */
2913 int columns
, /* Display columns (excluding margins) */
2914 indent
; /* Left margin */
2915 HANDLE_S
**handlesp
; /* Head of handles */
2916 htmlrisk_t warnrisk_f
; /* Nasty link warning call */
2917 ELPROP_S
*element_table
; /* markup element table */
2918 RSS_FEED_S
**feedp
; /* hook for RSS feed response */
2919 unsigned strip
:1; /* Hilite TAGs allowed */
2920 unsigned handles_loc
:1; /* Local handles requested? */
2921 unsigned showserver
:1; /* Display server after anchors */
2922 unsigned outputted
:1; /* any */
2923 unsigned no_relative_links
:1; /* Disable embedded relative links */
2924 unsigned related_content
:1; /* Embedded related content */
2925 unsigned html
:1; /* Output content in HTML */
2926 unsigned html_imgs
:1; /* Output IMG tags in HTML content */
2932 * Some macros to make life a little easier
2934 #define WRAP_COLS(X) ((X)->opt ? ((HTML_OPT_S *)(X)->opt)->columns : 80)
2935 #define HTML_INDENT(X) ((X)->opt ? ((HTML_OPT_S *)(X)->opt)->indent : 0)
2936 #define HTML_WROTE(X) (HD(X)->wrote)
2937 #define HTML_BASE(X) ((X)->opt ? ((HTML_OPT_S *)(X)->opt)->base : NULL)
2938 #define STRIP(X) ((X)->opt && ((HTML_OPT_S *)(X)->opt)->strip)
2939 #define PASS_HTML(X) ((X)->opt && ((HTML_OPT_S *)(X)->opt)->html)
2940 #define PASS_IMAGES(X) ((X)->opt && ((HTML_OPT_S *)(X)->opt)->html_imgs)
2941 #define HANDLESP(X) (((HTML_OPT_S *)(X)->opt)->handlesp)
2942 #define DO_HANDLES(X) ((X)->opt && HANDLESP(X))
2943 #define HANDLES_LOC(X) ((X)->opt && ((HTML_OPT_S *)(X)->opt)->handles_loc)
2944 #define SHOWSERVER(X) ((X)->opt && ((HTML_OPT_S *)(X)->opt)->showserver)
2945 #define NO_RELATIVE(X) ((X)->opt && ((HTML_OPT_S *)(X)->opt)->no_relative_links)
2946 #define RELATED_OK(X) ((X)->opt && ((HTML_OPT_S *)(X)->opt)->related_content)
2947 #define ELEMENTS(X) (((HTML_OPT_S *)(X)->opt)->element_table)
2948 #define RSS_FEED(X) (*(((HTML_OPT_S *)(X)->opt)->feedp))
2949 #define MAKE_LITERAL(C) (HTML_LITERAL | ((C) & 0xff))
2950 #define IS_LITERAL(C) (HTML_LITERAL & (C))
2951 #define HD(X) ((HTML_DATA_S *)(X)->data)
2952 #define ED(X) (HD(X)->el_data)
2953 #define EL(X) ((ELPROP_S *) (X)->element)
2954 #define ASCII_ISSPACE(C) ((C) < 0x80 && isspace((unsigned char) (C)))
2955 #define HTML_ISSPACE(C) (IS_LITERAL(C) == 0 && ((C) == HTML_NEWLINE || ASCII_ISSPACE(C)))
2956 #define NEW_CLCTR(X) { \
2957 ED(X) = (CLCTR_S *)fs_get(sizeof(CLCTR_S)); \
2958 memset(ED(X), 0, sizeof(CLCTR_S)); \
2959 HD(X)->token = html_element_collector; \
2962 #define FREE_CLCTR(X) { \
2963 if(ED(X)->attribs){ \
2965 while((p = ED(X)->attribs) != NULL){ \
2966 ED(X)->attribs = ED(X)->attribs->next; \
2968 fs_give((void **)&p->attribute); \
2970 fs_give((void **)&p->value); \
2971 fs_give((void **)&p); \
2974 if(ED(X)->element) \
2975 fs_give((void **) &ED(X)->element); \
2976 fs_give((void **) &ED(X)); \
2977 HD(X)->token = NULL; \
2979 #define HANDLERS(X) (HD(X)->h_stack)
2980 #define BOLD_BIT(X) (HD(X)->bold_on)
2981 #define ULINE_BIT(X) (HD(X)->uline_on)
2982 #define CENTER_BIT(X) (HD(X)->center)
2983 #define HTML_FLUSH(X) { \
2984 html_write(X, (X)->line, (X)->linep - (X)->line); \
2985 (X)->linep = (X)->line; \
2988 #define HTML_BOLD(X, S) if(! STRIP(X)){ \
2990 html_output((X), TAG_EMBED); \
2991 html_output((X), TAG_BOLDON); \
2994 html_output((X), TAG_EMBED); \
2995 html_output((X), TAG_BOLDOFF); \
2998 #define HTML_ULINE(X, S) \
3001 html_output((X), TAG_EMBED); \
3002 html_output((X), TAG_ULINEON); \
3005 html_output((X), TAG_EMBED); \
3006 html_output((X), TAG_ULINEOFF); \
3009 #define HTML_ITALIC(X, S) \
3012 html_output((X), TAG_EMBED); \
3013 html_output((X), TAG_ITALICON); \
3016 html_output((X), TAG_EMBED); \
3017 html_output((X), TAG_ITALICOFF); \
3020 #define HTML_STRIKE(X, S) \
3023 html_output((X), TAG_EMBED); \
3024 html_output((X), TAG_STRIKEON); \
3027 html_output((X), TAG_EMBED); \
3028 html_output((X), TAG_STRIKEOFF); \
3031 #define HTML_BIG(X, S) \
3034 html_output((X), TAG_EMBED); \
3035 html_output((X), TAG_BIGON); \
3038 html_output((X), TAG_EMBED); \
3039 html_output((X), TAG_BIGOFF); \
3042 #define HTML_SMALL(X, S) \
3045 html_output((X), TAG_EMBED); \
3046 html_output((X), TAG_SMALLON); \
3049 html_output((X), TAG_EMBED); \
3050 html_output((X), TAG_SMALLOFF); \
3053 #define WRAPPED_LEN(X) ((HD(f)->centered) \
3054 ? (HD(f)->centered->line.width \
3055 + HD(f)->centered->word.width \
3056 + ((HD(f)->centered->line.width \
3057 && HD(f)->centered->word.width) \
3060 #define HTML_DUMP_LIT(F, S, L) { \
3062 for(i = 0; i < (L); i++){ \
3063 c = ASCII_ISSPACE((unsigned char)(S)[i]) \
3065 : MAKE_LITERAL((S)[i]); \
3069 #define HTML_PROC(F, C) { \
3072 if((i = (*(HD(F)->token))(F, C)) != 0){ \
3074 HTML_DUMP_LIT(F, "<", 1); \
3075 if(HD(F)->el_data->element){ \
3077 HD(F)->el_data->element, \
3078 strlen(HD(F)->el_data->element));\
3080 if(HD(F)->el_data->len){ \
3082 HD(F)->el_data->buf, \
3083 HD(F)->el_data->len); \
3090 else if((C) == '<'){ \
3096 #define HTML_LINEP_PUTC(F, C) { \
3097 if((F)->linep - (F)->line >= (HD(F)->line_bufsize - 1)){ \
3098 size_t offset = (F)->linep - (F)->line; \
3099 fs_resize((void **) &(F)->line, \
3100 (HD(F)->line_bufsize * 2) * sizeof(char)); \
3101 HD(F)->line_bufsize *= 2; \
3102 (F)->linep = &(F)->line[offset]; \
3104 *(F)->linep++ = (C); \
3106 #define HTML_TEXT(F, C) switch((F)->f1){ \
3108 if(HTML_ISSPACE(C)) /* ignore repeated WS */ \
3110 HTML_TEXT_OUT(F, ' '); \
3111 (F)->f1 = DFL;/* stop sending chars here */ \
3112 /* fall thru to process 'c' */ \
3114 if(HD(F)->bitbucket) \
3115 (F)->f1 = DFL; /* no op */ \
3116 else if(HTML_ISSPACE(C) && HD(F)->wrapstate) \
3117 (F)->f1 = WSPACE;/* coalesce white space */ \
3118 else HTML_TEXT_OUT(F, C); \
3121 #define HTML_TEXT_OUT(F, C) if(HANDLERS(F)) /* let handlers see C */ \
3122 (*EL(HANDLERS(F))->handler)(HANDLERS(F),(C),GF_DATA); \
3126 #define HTML_DEBUG_EL(S, D) { \
3127 dprint((5, "-- html %s: %s\n", \
3130 ? (D)->element : "NULL")); \
3133 for(p = (D)->attribs; \
3134 p && p->attribute; \
3137 " PARM: %s%s%s\n", \
3139 ? p->attribute : "NULL",\
3140 p->value ? "=" : "", \
3141 p->value ? p->value : ""));\
3145 #define HTML_DEBUG_EL(S, D)
3148 #ifndef SYSTEM_PINE_INFO_PATH
3149 #define SYSTEM_PINE_INFO_PATH "/usr/local/lib/pine.info"
3151 #define CHTML_VAR_EXPAND(S) (!strcmp(S, "PINE_INFO_PATH") \
3152 ? SYSTEM_PINE_INFO_PATH : S)
3155 * Protos for Tag handlers
3157 int html_head(HANDLER_S
*, int, int);
3158 int html_base(HANDLER_S
*, int, int);
3159 int html_title(HANDLER_S
*, int, int);
3160 int html_body(HANDLER_S
*, int, int);
3161 int html_a(HANDLER_S
*, int, int);
3162 int html_br(HANDLER_S
*, int, int);
3163 int html_hr(HANDLER_S
*, int, int);
3164 int html_p(HANDLER_S
*, int, int);
3165 int html_table(HANDLER_S
*, int, int);
3166 int html_caption(HANDLER_S
*, int, int);
3167 int html_tr(HANDLER_S
*, int, int);
3168 int html_td(HANDLER_S
*, int, int);
3169 int html_th(HANDLER_S
*, int, int);
3170 int html_thead(HANDLER_S
*, int, int);
3171 int html_tbody(HANDLER_S
*, int, int);
3172 int html_tfoot(HANDLER_S
*, int, int);
3173 int html_col(HANDLER_S
*, int, int);
3174 int html_colgroup(HANDLER_S
*, int, int);
3175 int html_b(HANDLER_S
*, int, int);
3176 int html_u(HANDLER_S
*, int, int);
3177 int html_i(HANDLER_S
*, int, int);
3178 int html_em(HANDLER_S
*, int, int);
3179 int html_strong(HANDLER_S
*, int, int);
3180 int html_s(HANDLER_S
*, int, int);
3181 int html_big(HANDLER_S
*, int, int);
3182 int html_small(HANDLER_S
*, int, int);
3183 int html_font(HANDLER_S
*, int, int);
3184 int html_img(HANDLER_S
*, int, int);
3185 int html_map(HANDLER_S
*, int, int);
3186 int html_area(HANDLER_S
*, int, int);
3187 int html_form(HANDLER_S
*, int, int);
3188 int html_input(HANDLER_S
*, int, int);
3189 int html_option(HANDLER_S
*, int, int);
3190 int html_optgroup(HANDLER_S
*, int, int);
3191 int html_button(HANDLER_S
*, int, int);
3192 int html_select(HANDLER_S
*, int, int);
3193 int html_textarea(HANDLER_S
*, int, int);
3194 int html_label(HANDLER_S
*, int, int);
3195 int html_fieldset(HANDLER_S
*, int, int);
3196 int html_ul(HANDLER_S
*, int, int);
3197 int html_ol(HANDLER_S
*, int, int);
3198 int html_menu(HANDLER_S
*, int, int);
3199 int html_dir(HANDLER_S
*, int, int);
3200 int html_li(HANDLER_S
*, int, int);
3201 int html_h1(HANDLER_S
*, int, int);
3202 int html_h2(HANDLER_S
*, int, int);
3203 int html_h3(HANDLER_S
*, int, int);
3204 int html_h4(HANDLER_S
*, int, int);
3205 int html_h5(HANDLER_S
*, int, int);
3206 int html_h6(HANDLER_S
*, int, int);
3207 int html_blockquote(HANDLER_S
*, int, int);
3208 int html_address(HANDLER_S
*, int, int);
3209 int html_pre(HANDLER_S
*, int, int);
3210 int html_center(HANDLER_S
*, int, int);
3211 int html_div(HANDLER_S
*, int, int);
3212 int html_span(HANDLER_S
*, int, int);
3213 int html_dl(HANDLER_S
*, int, int);
3214 int html_dt(HANDLER_S
*, int, int);
3215 int html_dd(HANDLER_S
*, int, int);
3216 int html_script(HANDLER_S
*, int, int);
3217 int html_applet(HANDLER_S
*, int, int);
3218 int html_style(HANDLER_S
*, int, int);
3219 int html_kbd(HANDLER_S
*, int, int);
3220 int html_dfn(HANDLER_S
*, int, int);
3221 int html_var(HANDLER_S
*, int, int);
3222 int html_tt(HANDLER_S
*, int, int);
3223 int html_samp(HANDLER_S
*, int, int);
3224 int html_sub(HANDLER_S
*, int, int);
3225 int html_sup(HANDLER_S
*, int, int);
3226 int html_cite(HANDLER_S
*, int, int);
3227 int html_code(HANDLER_S
*, int, int);
3228 int html_ins(HANDLER_S
*, int, int);
3229 int html_del(HANDLER_S
*, int, int);
3230 int html_abbr(HANDLER_S
*, int, int);
3231 char *cid_tempfile_name(char *, long, int *);
3234 * Protos for RSS 2.0 Tag handlers
3236 int rss_rss(HANDLER_S
*, int, int);
3237 int rss_channel(HANDLER_S
*, int, int);
3238 int rss_title(HANDLER_S
*, int, int);
3239 int rss_image(HANDLER_S
*, int, int);
3240 int rss_link(HANDLER_S
*, int, int);
3241 int rss_description(HANDLER_S
*, int, int);
3242 int rss_ttl(HANDLER_S
*, int, int);
3243 int rss_item(HANDLER_S
*, int, int);
3246 * Proto's for support routines
3248 void html_pop(FILTER_S
*, ELPROP_S
*);
3249 int html_push(FILTER_S
*, ELPROP_S
*);
3250 int html_element_collector(FILTER_S
*, int);
3251 int html_element_flush(CLCTR_S
*);
3252 void html_element_comment(FILTER_S
*, char *);
3253 void html_element_output(FILTER_S
*, int);
3254 int html_entity_collector(FILTER_S
*, int, UCS
*, char **);
3255 void html_a_prefix(FILTER_S
*);
3256 void html_a_finish(HANDLER_S
*);
3257 void html_a_output_prefix(FILTER_S
*, int);
3258 void html_a_output_info(HANDLER_S
*);
3259 void html_a_relative(char *, char *, HANDLE_S
*);
3260 int html_href_relative(char *);
3261 int html_indent(FILTER_S
*, int, int);
3262 void html_blank(FILTER_S
*, int);
3263 void html_newline(FILTER_S
*);
3264 void html_output(FILTER_S
*, int);
3265 void html_output_string(FILTER_S
*, char *);
3266 void html_output_raw_tag(FILTER_S
*, char *);
3267 void html_output_normal(FILTER_S
*, int, int, int);
3268 void html_output_flush(FILTER_S
*);
3269 void html_output_centered(FILTER_S
*, int, int, int);
3270 void html_centered_handle(int *, char *, int);
3271 void html_centered_putc(WRAPLINE_S
*, int);
3272 void html_centered_flush(FILTER_S
*);
3273 void html_centered_flush_line(FILTER_S
*);
3274 void html_write_anchor(FILTER_S
*, int);
3275 void html_write_newline(FILTER_S
*);
3276 void html_write_indent(FILTER_S
*, int);
3277 void html_write(FILTER_S
*, char *, int);
3278 void html_putc(FILTER_S
*, int);
3279 int html_event_attribute(char *);
3280 char *rss_skip_whitespace(char *s
);
3281 ELPROP_S
*element_properties(FILTER_S
*, char *);
3285 * Named entity table -- most from HTML 2.0 (rfc1866) plus some from
3286 * W3C doc "Additional named entities for HTML"
3288 static struct html_entities
{
3289 char *name
; /* entity name */
3290 UCS value
; /* UCS entity value */
3291 char *plain
; /* US-ASCII representation */
3293 {"quot", 0x0022}, /* 34 - quotation mark */
3294 {"amp", 0x0026}, /* 38 - ampersand */
3295 {"apos", 0x0027}, /* 39 - apostrophe */
3296 {"lt", 0x003C}, /* 60 - less-than sign */
3297 {"gt", 0x003E}, /* 62 - greater-than sign */
3298 {"nbsp", 0x00A0, " "}, /* 160 - no-break space */
3299 {"iexcl", 0x00A1}, /* 161 - inverted exclamation mark */
3300 {"cent", 0x00A2}, /* 162 - cent sign */
3301 {"pound", 0x00A3}, /* 163 - pound sign */
3302 {"curren", 0x00A4, "CUR"}, /* 164 - currency sign */
3303 {"yen", 0x00A5}, /* 165 - yen sign */
3304 {"brvbar", 0x00A6, "|"}, /* 166 - broken bar */
3305 {"sect", 0x00A7}, /* 167 - section sign */
3306 {"uml", 0x00A8, "\""}, /* 168 - diaeresis */
3307 {"copy", 0x00A9, "(C)"}, /* 169 - copyright sign */
3308 {"ordf", 0x00AA, "a"}, /* 170 - feminine ordinal indicator */
3309 {"laquo", 0x00AB, "<<"}, /* 171 - left-pointing double angle quotation mark */
3310 {"not", 0x00AC, "NOT"}, /* 172 - not sign */
3311 {"shy", 0x00AD, "-"}, /* 173 - soft hyphen */
3312 {"reg", 0x00AE, "(R)"}, /* 174 - registered sign */
3313 {"macr", 0x00AF}, /* 175 - macron */
3314 {"deg", 0x00B0, "DEG"}, /* 176 - degree sign */
3315 {"plusmn", 0x00B1, "+/-"}, /* 177 - plus-minus sign */
3316 {"sup2", 0x00B2}, /* 178 - superscript two */
3317 {"sup3", 0x00B3}, /* 179 - superscript three */
3318 {"acute", 0x00B4, "'"}, /* 180 - acute accent */
3319 {"micro", 0x00B5}, /* 181 - micro sign */
3320 {"para", 0x00B6}, /* 182 - pilcrow sign */
3321 {"middot", 0x00B7}, /* 183 - middle dot */
3322 {"cedil", 0x00B8}, /* 184 - cedilla */
3323 {"sup1", 0x00B9}, /* 185 - superscript one */
3324 {"ordm", 0x00BA, "o"}, /* 186 - masculine ordinal indicator */
3325 {"raquo", 0x00BB, ">>"}, /* 187 - right-pointing double angle quotation mark */
3326 {"frac14", 0x00BC, " 1/4"}, /* 188 - vulgar fraction one quarter */
3327 {"frac12", 0x00BD, " 1/2"}, /* 189 - vulgar fraction one half */
3328 {"frac34", 0x00BE, " 3/4"}, /* 190 - vulgar fraction three quarters */
3329 {"iquest", 0x00BF}, /* 191 - inverted question mark */
3330 {"Agrave", 0x00C0, "A"}, /* 192 - latin capital letter a with grave */
3331 {"Aacute", 0x00C1, "A"}, /* 193 - latin capital letter a with acute */
3332 {"Acirc", 0x00C2, "A"}, /* 194 - latin capital letter a with circumflex */
3333 {"Atilde", 0x00C3, "A"}, /* 195 - latin capital letter a with tilde */
3334 {"Auml", 0x00C4, "AE"}, /* 196 - latin capital letter a with diaeresis */
3335 {"Aring", 0x00C5, "A"}, /* 197 - latin capital letter a with ring above */
3336 {"AElig", 0x00C6, "AE"}, /* 198 - latin capital letter ae */
3337 {"Ccedil", 0x00C7, "C"}, /* 199 - latin capital letter c with cedilla */
3338 {"Egrave", 0x00C8, "E"}, /* 200 - latin capital letter e with grave */
3339 {"Eacute", 0x00C9, "E"}, /* 201 - latin capital letter e with acute */
3340 {"Ecirc", 0x00CA, "E"}, /* 202 - latin capital letter e with circumflex */
3341 {"Euml", 0x00CB, "E"}, /* 203 - latin capital letter e with diaeresis */
3342 {"Igrave", 0x00CC, "I"}, /* 204 - latin capital letter i with grave */
3343 {"Iacute", 0x00CD, "I"}, /* 205 - latin capital letter i with acute */
3344 {"Icirc", 0x00CE, "I"}, /* 206 - latin capital letter i with circumflex */
3345 {"Iuml", 0x00CF, "I"}, /* 207 - latin capital letter i with diaeresis */
3346 {"ETH", 0x00D0, "DH"}, /* 208 - latin capital letter eth */
3347 {"Ntilde", 0x00D1, "N"}, /* 209 - latin capital letter n with tilde */
3348 {"Ograve", 0x00D2, "O"}, /* 210 - latin capital letter o with grave */
3349 {"Oacute", 0x00D3, "O"}, /* 211 - latin capital letter o with acute */
3350 {"Ocirc", 0x00D4, "O"}, /* 212 - latin capital letter o with circumflex */
3351 {"Otilde", 0x00D5, "O"}, /* 213 - latin capital letter o with tilde */
3352 {"Ouml", 0x00D6, "O"}, /* 214 - latin capital letter o with diaeresis */
3353 {"times", 0x00D7, "x"}, /* 215 - multiplication sign */
3354 {"Oslash", 0x00D8, "O"}, /* 216 - latin capital letter o with stroke */
3355 {"Ugrave", 0x00D9, "U"}, /* 217 - latin capital letter u with grave */
3356 {"Uacute", 0x00DA, "U"}, /* 218 - latin capital letter u with acute */
3357 {"Ucirc", 0x00DB, "U"}, /* 219 - latin capital letter u with circumflex */
3358 {"Uuml", 0x00DC, "UE"}, /* 220 - latin capital letter u with diaeresis */
3359 {"Yacute", 0x00DD, "Y"}, /* 221 - latin capital letter y with acute */
3360 {"THORN", 0x00DE, "P"}, /* 222 - latin capital letter thorn */
3361 {"szlig", 0x00DF, "ss"}, /* 223 - latin small letter sharp s (German <a href="/wiki/Eszett" title="Eszett">Eszett</a>) */
3362 {"agrave", 0x00E0, "a"}, /* 224 - latin small letter a with grave */
3363 {"aacute", 0x00E1, "a"}, /* 225 - latin small letter a with acute */
3364 {"acirc", 0x00E2, "a"}, /* 226 - latin small letter a with circumflex */
3365 {"atilde", 0x00E3, "a"}, /* 227 - latin small letter a with tilde */
3366 {"auml", 0x00E4, "ae"}, /* 228 - latin small letter a with diaeresis */
3367 {"aring", 0x00E5, "a"}, /* 229 - latin small letter a with ring above */
3368 {"aelig", 0x00E6, "ae"}, /* 230 - latin lowercase ligature ae */
3369 {"ccedil", 0x00E7, "c"}, /* 231 - latin small letter c with cedilla */
3370 {"egrave", 0x00E8, "e"}, /* 232 - latin small letter e with grave */
3371 {"eacute", 0x00E9, "e"}, /* 233 - latin small letter e with acute */
3372 {"ecirc", 0x00EA, "e"}, /* 234 - latin small letter e with circumflex */
3373 {"euml", 0x00EB, "e"}, /* 235 - latin small letter e with diaeresis */
3374 {"igrave", 0x00EC, "i"}, /* 236 - latin small letter i with grave */
3375 {"iacute", 0x00ED, "i"}, /* 237 - latin small letter i with acute */
3376 {"icirc", 0x00EE, "i"}, /* 238 - latin small letter i with circumflex */
3377 {"iuml", 0x00EF, "i"}, /* 239 - latin small letter i with diaeresis */
3378 {"eth", 0x00F0, "dh"}, /* 240 - latin small letter eth */
3379 {"ntilde", 0x00F1, "n"}, /* 241 - latin small letter n with tilde */
3380 {"ograve", 0x00F2, "o"}, /* 242 - latin small letter o with grave */
3381 {"oacute", 0x00F3, "o"}, /* 243 - latin small letter o with acute */
3382 {"ocirc", 0x00F4, "o"}, /* 244 - latin small letter o with circumflex */
3383 {"otilde", 0x00F5, "o"}, /* 245 - latin small letter o with tilde */
3384 {"ouml", 0x00F6, "oe"}, /* 246 - latin small letter o with diaeresis */
3385 {"divide", 0x00F7, "/"}, /* 247 - division sign */
3386 {"oslash", 0x00F8, "o"}, /* 248 - latin small letter o with stroke */
3387 {"ugrave", 0x00F9, "u"}, /* 249 - latin small letter u with grave */
3388 {"uacute", 0x00FA, "u"}, /* 250 - latin small letter u with acute */
3389 {"ucirc", 0x00FB, "u"}, /* 251 - latin small letter u with circumflex */
3390 {"uuml", 0x00FC, "ue"}, /* 252 - latin small letter u with diaeresis */
3391 {"yacute", 0x00FD, "y"}, /* 253 - latin small letter y with acute */
3392 {"thorn", 0x00FE, "p"}, /* 254 - latin small letter thorn */
3393 {"yuml", 0x00FF, "y"}, /* 255 - latin small letter y with diaeresis */
3394 {"OElig", 0x0152, "OE"}, /* 338 - latin capital ligature oe */
3395 {"oelig", 0x0153, "oe"}, /* 339 - latin small ligature oe */
3396 {"Scaron", 0x0160, "S"}, /* 352 - latin capital letter s with caron */
3397 {"scaron", 0x0161, "s"}, /* 353 - latin small letter s with caron */
3398 {"Yuml", 0x0178, "Y"}, /* 376 - latin capital letter y with diaeresis */
3399 {"fnof", 0x0192, "f"}, /* 402 - latin small letter f with hook */
3400 {"circ", 0x02C6}, /* 710 - modifier letter circumflex accent */
3401 {"tilde", 0x02DC, "~"}, /* 732 - small tilde */
3402 {"Alpha", 0x0391}, /* 913 - greek capital letter alpha */
3403 {"Beta", 0x0392}, /* 914 - greek capital letter beta */
3404 {"Gamma", 0x0393}, /* 915 - greek capital letter gamma */
3405 {"Delta", 0x0394}, /* 916 - greek capital letter delta */
3406 {"Epsilon", 0x0395}, /* 917 - greek capital letter epsilon */
3407 {"Zeta", 0x0396}, /* 918 - greek capital letter zeta */
3408 {"Eta", 0x0397}, /* 919 - greek capital letter eta */
3409 {"Theta", 0x0398}, /* 920 - greek capital letter theta */
3410 {"Iota", 0x0399}, /* 921 - greek capital letter iota */
3411 {"Kappa", 0x039A}, /* 922 - greek capital letter kappa */
3412 {"Lambda", 0x039B}, /* 923 - greek capital letter lamda */
3413 {"Mu", 0x039C}, /* 924 - greek capital letter mu */
3414 {"Nu", 0x039D}, /* 925 - greek capital letter nu */
3415 {"Xi", 0x039E}, /* 926 - greek capital letter xi */
3416 {"Omicron", 0x039F}, /* 927 - greek capital letter omicron */
3417 {"Pi", 0x03A0}, /* 928 - greek capital letter pi */
3418 {"Rho", 0x03A1}, /* 929 - greek capital letter rho */
3419 {"Sigma", 0x03A3}, /* 931 - greek capital letter sigma */
3420 {"Tau", 0x03A4}, /* 932 - greek capital letter tau */
3421 {"Upsilon", 0x03A5}, /* 933 - greek capital letter upsilon */
3422 {"Phi", 0x03A6}, /* 934 - greek capital letter phi */
3423 {"Chi", 0x03A7}, /* 935 - greek capital letter chi */
3424 {"Psi", 0x03A8}, /* 936 - greek capital letter psi */
3425 {"Omega", 0x03A9}, /* 937 - greek capital letter omega */
3426 {"alpha", 0x03B1}, /* 945 - greek small letter alpha */
3427 {"beta", 0x03B2}, /* 946 - greek small letter beta */
3428 {"gamma", 0x03B3}, /* 947 - greek small letter gamma */
3429 {"delta", 0x03B4}, /* 948 - greek small letter delta */
3430 {"epsilon", 0x03B5}, /* 949 - greek small letter epsilon */
3431 {"zeta", 0x03B6}, /* 950 - greek small letter zeta */
3432 {"eta", 0x03B7}, /* 951 - greek small letter eta */
3433 {"theta", 0x03B8}, /* 952 - greek small letter theta */
3434 {"iota", 0x03B9}, /* 953 - greek small letter iota */
3435 {"kappa", 0x03BA}, /* 954 - greek small letter kappa */
3436 {"lambda", 0x03BB}, /* 955 - greek small letter lamda */
3437 {"mu", 0x03BC}, /* 956 - greek small letter mu */
3438 {"nu", 0x03BD}, /* 957 - greek small letter nu */
3439 {"xi", 0x03BE}, /* 958 - greek small letter xi */
3440 {"omicron", 0x03BF}, /* 959 - greek small letter omicron */
3441 {"pi", 0x03C0}, /* 960 - greek small letter pi */
3442 {"rho", 0x03C1}, /* 961 - greek small letter rho */
3443 {"sigmaf", 0x03C2}, /* 962 - greek small letter final sigma */
3444 {"sigma", 0x03C3}, /* 963 - greek small letter sigma */
3445 {"tau", 0x03C4}, /* 964 - greek small letter tau */
3446 {"upsilon", 0x03C5}, /* 965 - greek small letter upsilon */
3447 {"phi", 0x03C6}, /* 966 - greek small letter phi */
3448 {"chi", 0x03C7}, /* 967 - greek small letter chi */
3449 {"psi", 0x03C8}, /* 968 - greek small letter psi */
3450 {"omega", 0x03C9}, /* 969 - greek small letter omega */
3451 {"thetasym", 0x03D1}, /* 977 - greek theta symbol */
3452 {"upsih", 0x03D2}, /* 978 - greek upsilon with hook symbol */
3453 {"piv", 0x03D6}, /* 982 - greek pi symbol */
3454 {"ensp", 0x2002}, /* 8194 - en space */
3455 {"emsp", 0x2003}, /* 8195 - em space */
3456 {"thinsp", 0x2009}, /* 8201 - thin space */
3457 {"zwnj", 0x200C}, /* 8204 - zero width non-joiner */
3458 {"zwj", 0x200D}, /* 8205 - zero width joiner */
3459 {"lrm", 0x200E}, /* 8206 - left-to-right mark */
3460 {"rlm", 0x200F}, /* 8207 - right-to-left mark */
3461 {"ndash", 0x2013}, /* 8211 - en dash */
3462 {"mdash", 0x2014}, /* 8212 - em dash */
3463 {"#8213", 0x2015, "--"}, /* 2015 - horizontal bar */
3464 {"#8214", 0x2016, "||"}, /* 2016 - double vertical line */
3465 {"#8215", 0x2017, "__"}, /* 2017 - double low line */
3466 {"lsquo", 0x2018}, /* 8216 - left single quotation mark */
3467 {"rsquo", 0x2019}, /* 8217 - right single quotation mark */
3468 {"sbquo", 0x201A}, /* 8218 - single low-9 quotation mark */
3469 {"ldquo", 0x201C}, /* 8220 - left double quotation mark */
3470 {"rdquo", 0x201D}, /* 8221 - right double quotation mark */
3471 {"bdquo", 0x201E, ",,"}, /* 8222 - double low-9 quotation mark */
3472 {"#8223", 0x201F, "``"}, /* 201F - double high reversed-9 quotation mark */
3473 {"dagger", 0x2020}, /* 8224 - dagger */
3474 {"Dagger", 0x2021}, /* 8225 - double dagger */
3475 {"bull", 0x2022, "*"}, /* 8226 - bullet */
3476 {"hellip", 0x2026}, /* 8230 - horizontal ellipsis */
3477 {"permil", 0x2030}, /* 8240 - per mille sign */
3478 {"prime", 0x2032, "\'"}, /* 8242 - prime */
3479 {"Prime", 0x2033, "\'\'"}, /* 8243 - double prime */
3480 {"#8244", 0x2034, "\'\'\'"}, /* 2034 - triple prime */
3481 {"lsaquo", 0x2039}, /* 8249 - single left-pointing angle quotation mark */
3482 {"rsaquo", 0x203A}, /* 8250 - single right-pointing angle quotation mark */
3483 {"#8252", 0x203C, "!!"}, /* 203C - double exclamation mark */
3484 {"oline", 0x203E, "-"}, /* 8254 - overline */
3485 {"frasl", 0x2044}, /* 8260 - fraction slash */
3486 {"#8263", 0x2047, "??"}, /* 2047 - double question mark */
3487 {"#8264", 0x2048, "?!"}, /* 2048 - question exclamation mark */
3488 {"#8265", 0x2049, "!?"}, /* 2049 - exclamation question mark */
3489 {"#8279", 0x2057, "\'\'\'\'"}, /* 2057 - quad prime */
3490 {"euro", 0x20AC, "EUR"}, /* 8364 - euro sign */
3491 {"image", 0x2111}, /* 8465 - black-letter capital i */
3492 {"weierp", 0x2118}, /* 8472 - script capital p (<a href="/wiki/Weierstrass" title="Weierstrass">Weierstrass</a> p) */
3493 {"real", 0x211C}, /* 8476 - black-letter capital r */
3494 {"trade", 0x2122, "[tm]"}, /* 8482 - trademark sign */
3495 {"alefsym", 0x2135}, /* 8501 - alef symbol */
3496 {"larr", 0x2190}, /* 8592 - leftwards arrow */
3497 {"uarr", 0x2191}, /* 8593 - upwards arrow */
3498 {"rarr", 0x2192}, /* 8594 - rightwards arrow */
3499 {"darr", 0x2193}, /* 8595 - downwards arrow */
3500 {"harr", 0x2194}, /* 8596 - left right arrow */
3501 {"crarr", 0x21B5}, /* 8629 - downwards arrow with corner leftwards */
3502 {"lArr", 0x21D0}, /* 8656 - leftwards double arrow */
3503 {"uArr", 0x21D1}, /* 8657 - upwards double arrow */
3504 {"rArr", 0x21D2}, /* 8658 - rightwards double arrow */
3505 {"dArr", 0x21D3}, /* 8659 - downwards double arrow */
3506 {"hArr", 0x21D4}, /* 8660 - left right double arrow */
3507 {"forall", 0x2200}, /* 8704 - for all */
3508 {"part", 0x2202}, /* 8706 - partial differential */
3509 {"exist", 0x2203}, /* 8707 - there exists */
3510 {"empty", 0x2205}, /* 8709 - empty set */
3511 {"nabla", 0x2207}, /* 8711 - nabla */
3512 {"isin", 0x2208}, /* 8712 - element of */
3513 {"notin", 0x2209}, /* 8713 - not an element of */
3514 {"ni", 0x220B}, /* 8715 - contains as member */
3515 {"prod", 0x220F}, /* 8719 - n-ary product */
3516 {"sum", 0x2211}, /* 8721 - n-ary summation */
3517 {"minus", 0x2212}, /* 8722 - minus sign */
3518 {"lowast", 0x2217}, /* 8727 - asterisk operator */
3519 {"radic", 0x221A}, /* 8730 - square root */
3520 {"prop", 0x221D}, /* 8733 - proportional to */
3521 {"infin", 0x221E}, /* 8734 - infinity */
3522 {"ang", 0x2220}, /* 8736 - angle */
3523 {"and", 0x2227}, /* 8743 - logical and */
3524 {"or", 0x2228}, /* 8744 - logical or */
3525 {"cap", 0x2229}, /* 8745 - intersection */
3526 {"cup", 0x222A}, /* 8746 - union */
3527 {"int", 0x222B}, /* 8747 - integral */
3528 {"there4", 0x2234}, /* 8756 - therefore */
3529 {"sim", 0x223C}, /* 8764 - tilde operator */
3530 {"cong", 0x2245}, /* 8773 - congruent to */
3531 {"asymp", 0x2248}, /* 8776 - almost equal to */
3532 {"ne", 0x2260}, /* 8800 - not equal to */
3533 {"equiv", 0x2261}, /* 8801 - identical to (equivalent to) */
3534 {"le", 0x2264}, /* 8804 - less-than or equal to */
3535 {"ge", 0x2265}, /* 8805 - greater-than or equal to */
3536 {"sub", 0x2282}, /* 8834 - subset of */
3537 {"sup", 0x2283}, /* 8835 - superset of */
3538 {"nsub", 0x2284}, /* 8836 - not a subset of */
3539 {"sube", 0x2286}, /* 8838 - subset of or equal to */
3540 {"supe", 0x2287}, /* 8839 - superset of or equal to */
3541 {"oplus", 0x2295}, /* 8853 - circled plus */
3542 {"otimes", 0x2297}, /* 8855 - circled times */
3543 {"perp", 0x22A5}, /* 8869 - up tack */
3544 {"sdot", 0x22C5}, /* 8901 - dot operator */
3545 {"lceil", 0x2308}, /* 8968 - left ceiling */
3546 {"rceil", 0x2309}, /* 8969 - right ceiling */
3547 {"lfloor", 0x230A}, /* 8970 - left floor */
3548 {"rfloor", 0x230B}, /* 8971 - right floor */
3549 {"lang", 0x2329}, /* 9001 - left-pointing angle bracket */
3550 {"rang", 0x232A}, /* 9002 - right-pointing angle bracket */
3551 {"loz", 0x25CA}, /* 9674 - lozenge */
3552 {"spades", 0x2660}, /* 9824 - black spade suit */
3553 {"clubs", 0x2663}, /* 9827 - black club suit */
3554 {"hearts", 0x2665}, /* 9829 - black heart suit */
3555 {"diams", 0x2666} /* 9830 - black diamond suit */
3560 * Table of supported elements and corresponding handlers
3562 static ELPROP_S html_element_table
[] = {
3563 {"HTML", 4}, /* HTML ignore if seen? */
3564 {"HEAD", 4, html_head
}, /* slurp until <BODY> ? */
3565 {"TITLE", 5, html_title
}, /* Document Title */
3566 {"BASE", 4, html_base
}, /* HREF base */
3567 {"BODY", 4, html_body
}, /* HTML BODY */
3568 {"A", 1, html_a
}, /* Anchor */
3569 {"ABBR", 4, html_abbr
}, /* Abbreviation */
3570 {"IMG", 3, html_img
}, /* Image */
3571 {"MAP", 3, html_map
}, /* Image Map */
3572 {"AREA", 4, html_area
}, /* Image Map Area */
3573 {"HR", 2, html_hr
, 1, 1}, /* Horizontal Rule */
3574 {"BR", 2, html_br
, 0, 1}, /* Line Break */
3575 {"P", 1, html_p
, 1}, /* Paragraph */
3576 {"OL", 2, html_ol
, 1}, /* Ordered List */
3577 {"UL", 2, html_ul
, 1}, /* Unordered List */
3578 {"MENU", 4, html_menu
}, /* Menu List */
3579 {"DIR", 3, html_dir
}, /* Directory List */
3580 {"LI", 2, html_li
}, /* ... List Item */
3581 {"DL", 2, html_dl
, 1}, /* Definition List */
3582 {"DT", 2, html_dt
}, /* ... Def. Term */
3583 {"DD", 2, html_dd
}, /* ... Def. Definition */
3584 {"I", 1, html_i
}, /* Italic Text */
3585 {"EM", 2, html_em
}, /* Typographic Emphasis */
3586 {"STRONG", 6, html_strong
}, /* STRONG Typo Emphasis */
3587 {"VAR", 3, html_i
}, /* Variable Name */
3588 {"B", 1, html_b
}, /* Bold Text */
3589 {"U", 1, html_u
}, /* Underline Text */
3590 {"S", 1, html_s
}, /* Strike-Through Text */
3591 {"STRIKE", 6, html_s
}, /* Strike-Through Text */
3592 {"BIG", 3, html_big
}, /* Big Font Text */
3593 {"SMALL", 5, html_small
}, /* Small Font Text */
3594 {"FONT", 4, html_font
}, /* Font display directives */
3595 {"BLOCKQUOTE", 10, html_blockquote
, 1}, /* Blockquote */
3596 {"ADDRESS", 7, html_address
, 1}, /* Address */
3597 {"CENTER", 6, html_center
}, /* Centered Text v3.2 */
3598 {"DIV", 3, html_div
, 1}, /* Document Division 3.2 */
3599 {"SPAN", 4, html_span
}, /* Text Span */
3600 {"H1", 2, html_h1
, 1}, /* Headings... */
3601 {"H2", 2, html_h2
, 1},
3602 {"H3", 2, html_h3
,1},
3603 {"H4", 2, html_h4
, 1},
3604 {"H5", 2, html_h5
, 1},
3605 {"H6", 2, html_h6
, 1},
3606 {"PRE", 3, html_pre
, 1}, /* Preformatted Text */
3607 {"KBD", 3, html_kbd
}, /* Keyboard Input (NO OP) */
3608 {"DFN", 3, html_dfn
}, /* Definition (NO OP) */
3609 {"VAR", 3, html_var
}, /* Variable (NO OP) */
3610 {"TT", 2, html_tt
}, /* Typetype (NO OP) */
3611 {"SAMP", 4, html_samp
}, /* Sample Text (NO OP) */
3612 {"CITE", 4, html_cite
}, /* Citation (NO OP) */
3613 {"CODE", 4, html_code
}, /* Code Text (NO OP) */
3614 {"INS", 3, html_ins
}, /* Text Inserted (NO OP) */
3615 {"DEL", 3, html_del
}, /* Text Deleted (NO OP) */
3616 {"SUP", 3, html_sup
}, /* Text Superscript (NO OP) */
3617 {"SUB", 3, html_sub
}, /* Text Superscript (NO OP) */
3618 {"STYLE", 5, html_style
}, /* CSS Definitions */
3620 /*----- Handlers below UNIMPLEMENTED (and won't until later) -----*/
3622 {"FORM", 4, html_form
, 1}, /* form within a document */
3623 {"INPUT", 5, html_input
}, /* One input field, options */
3624 {"BUTTON", 6, html_button
}, /* Push Button */
3625 {"OPTION", 6, html_option
}, /* One option within Select */
3626 {"OPTION", 6, html_optgroup
}, /* Option Group Definition */
3627 {"SELECT", 6, html_select
}, /* Selection from a set */
3628 {"TEXTAREA", 8, html_textarea
}, /* A multi-line input field */
3629 {"LABEL", 5, html_label
}, /* Control Label */
3630 {"FIELDSET", 8, html_fieldset
, 1}, /* Fieldset Control Group */
3632 /*----- Handlers below NEVER TO BE IMPLEMENTED -----*/
3633 {"SCRIPT", 6, html_script
}, /* Embedded scripting statements */
3634 {"APPLET", 6, NULL
}, /* Embedded applet statements */
3635 {"OBJECT", 6, NULL
}, /* Embedded object statements */
3636 {"LINK", 4, NULL
}, /* References to external data */
3637 {"PARAM", 5, NULL
}, /* Applet/Object parameters */
3639 /*----- Handlers below provide limited support for RFC 1942 Tables -----*/
3641 {"TABLE", 5, html_table
, 1}, /* Table */
3642 {"CAPTION", 7, html_caption
}, /* Table Caption */
3643 {"TR", 2, html_tr
}, /* Table Table Row */
3644 {"TD", 2, html_td
}, /* Table Table Data */
3645 {"TH", 2, html_th
}, /* Table Table Head */
3646 {"THEAD", 5, html_thead
}, /* Table Table Head */
3647 {"TBODY", 5, html_tbody
}, /* Table Table Body */
3648 {"TFOOT", 5, html_tfoot
}, /* Table Table Foot */
3649 {"COL", 3, html_col
}, /* Table Column Attributes */
3650 {"COLGROUP", 8, html_colgroup
}, /* Table Column Group Attributes */
3657 * Table of supported RSS 2.0 elements
3659 static ELPROP_S rss_element_table
[] = {
3660 {"RSS", 3, rss_rss
}, /* RSS 2.0 version */
3661 {"CHANNEL", 7, rss_channel
}, /* RSS 2.0 Channel */
3662 {"TITLE", 5, rss_title
}, /* RSS 2.0 Title */
3663 {"IMAGE", 5, rss_image
}, /* RSS 2.0 Channel Image */
3664 {"LINK", 4, rss_link
}, /* RSS 2.0 Channel/Item Link */
3665 {"DESCRIPTION", 11, rss_description
}, /* RSS 2.0 Channel/Item Description */
3666 {"ITEM", 4, rss_item
}, /* RSS 2.0 Channel ITEM */
3667 {"TTL", 3, rss_ttl
}, /* RSS 2.0 Item TTL */
3673 * Initialize the given handler, and add it to the stack if it
3676 * Returns: 1 if handler chose to get pushed on stack
3677 * 0 if handler declined
3680 html_push(FILTER_S
*fd
, ELPROP_S
*ep
)
3684 new = (HANDLER_S
*)fs_get(sizeof(HANDLER_S
));
3685 memset(new, 0, sizeof(HANDLER_S
));
3686 new->html_data
= fd
;
3688 if((*ep
->handler
)(new, 0, GF_RESET
)){ /* stack the handler? */
3689 new->below
= HANDLERS(fd
);
3690 HANDLERS(fd
) = new; /* push */
3694 fs_give((void **) &new);
3700 * Remove the most recently installed the given handler
3701 * after letting it accept its demise.
3704 html_pop(FILTER_S
*fd
, ELPROP_S
*ep
)
3708 for(tp
= HANDLERS(fd
); tp
&& ep
!= EL(tp
); tp
= tp
->below
){
3711 dprint((3, "-- html error: bad nesting: given /%s expected /%s", ep
->element
, EL(tp
)->element
));
3712 /* if no evidence of opening tag, ignore given closing tag */
3713 for(tp2
= HANDLERS(fd
); tp2
&& ep
!= EL(tp2
); tp2
= tp2
->below
)
3717 dprint((3, "-- html error: no opening tag for given tag /%s", ep
->element
));
3721 (void) (*EL(tp
)->handler
)(tp
, 0, GF_EOD
);
3722 HANDLERS(fd
) = tp
->below
;
3726 (void) (*EL(tp
)->handler
)(tp
, 0, GF_EOD
); /* may adjust handler list */
3727 if(tp
!= HANDLERS(fd
)){
3730 for(p
= HANDLERS(fd
); p
->below
!= tp
; p
= p
->below
)
3734 p
->below
= tp
->below
; /* remove from middle of stack */
3735 /* BUG: else programming botch and we should die */
3738 HANDLERS(fd
) = tp
->below
; /* pop */
3740 fs_give((void **)&tp
);
3743 /* BUG: should MAKE SURE NOT TO EMIT IT */
3744 dprint((3, "-- html error: end tag without a start: %s", ep
->element
));
3750 * Deal with data passed a handler in its GF_DATA state
3753 html_handoff(HANDLER_S
*hd
, int ch
)
3756 (void) (*EL(hd
->below
)->handler
)(hd
->below
, ch
, GF_DATA
);
3758 html_output(hd
->html_data
, ch
);
3763 * HTML <BR> element handler
3766 html_br(HANDLER_S
*hd
, int ch
, int cmd
)
3768 if(cmd
== GF_RESET
){
3769 if(PASS_HTML(hd
->html_data
)){
3770 html_output_raw_tag(hd
->html_data
, "br");
3773 html_output(hd
->html_data
, HTML_NEWLINE
);
3777 return(0); /* don't get linked */
3782 * HTML <HR> (Horizontal Rule) element handler
3785 html_hr(HANDLER_S
*hd
, int ch
, int cmd
)
3787 if(cmd
== GF_RESET
){
3788 if(PASS_HTML(hd
->html_data
)){
3789 html_output_raw_tag(hd
->html_data
, "hr");
3792 int i
, old_wrap
, width
, align
;
3795 width
= WRAP_COLS(hd
->html_data
);
3797 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
3801 if(!strucmp(p
->attribute
, "ALIGN")){
3802 if(!strucmp(p
->value
, "LEFT"))
3804 else if(!strucmp(p
->value
, "RIGHT"))
3807 else if(!strucmp(p
->attribute
, "WIDTH")){
3811 for(cp
= p
->value
; *cp
; cp
++)
3813 width
= (WRAP_COLS(hd
->html_data
)*MIN(100,width
))/100;
3816 else if(isdigit((unsigned char) *cp
))
3817 width
= (width
* 10) + (*cp
- '0');
3819 width
= MIN(width
, WRAP_COLS(hd
->html_data
));
3823 html_blank(hd
->html_data
, 1); /* at least one blank line */
3825 old_wrap
= HD(hd
->html_data
)->wrapstate
;
3826 HD(hd
->html_data
)->wrapstate
= 0;
3827 if((i
= MAX(0, WRAP_COLS(hd
->html_data
) - width
))
3828 && ((align
== 0) ? i
/= 2 : (align
== 2)))
3830 html_output(hd
->html_data
, ' ');
3832 for(i
= 0; i
< width
; i
++)
3833 html_output(hd
->html_data
, '_');
3835 html_blank(hd
->html_data
, 1);
3836 HD(hd
->html_data
)->wrapstate
= old_wrap
;
3840 return(0); /* don't get linked */
3845 * HTML <P> (paragraph) element handler
3848 html_p(HANDLER_S
*hd
, int ch
, int cmd
)
3851 html_handoff(hd
, ch
);
3853 else if(cmd
== GF_RESET
){
3854 if(PASS_HTML(hd
->html_data
)){
3855 html_output_raw_tag(hd
->html_data
, "p");
3858 /* Make sure there's at least 1 blank line */
3859 html_blank(hd
->html_data
, 1);
3861 /* adjust indent level if needed */
3862 if(HD(hd
->html_data
)->li_pending
){
3863 html_indent(hd
->html_data
, 4, HTML_ID_INC
);
3864 HD(hd
->html_data
)->li_pending
= 0;
3868 else if(cmd
== GF_EOD
){
3869 if(PASS_HTML(hd
->html_data
)){
3870 html_output_string(hd
->html_data
, "</p>");
3873 /* Make sure there's at least 1 blank line */
3874 html_blank(hd
->html_data
, 1);
3878 return(1); /* GET linked */
3883 * HTML Table <TABLE> (paragraph) table row
3886 html_table(HANDLER_S
*hd
, int ch
, int cmd
)
3889 if(PASS_HTML(hd
->html_data
)){
3890 html_handoff(hd
, ch
);
3893 else if(cmd
== GF_RESET
){
3894 if(PASS_HTML(hd
->html_data
)){
3895 html_output_raw_tag(hd
->html_data
, "table");
3898 /* Make sure there's at least 1 blank line */
3899 html_blank(hd
->html_data
, 0);
3901 else if(cmd
== GF_EOD
){
3902 if(PASS_HTML(hd
->html_data
)){
3903 html_output_string(hd
->html_data
, "</table>");
3906 /* Make sure there's at least 1 blank line */
3907 html_blank(hd
->html_data
, 0);
3909 return(PASS_HTML(hd
->html_data
)); /* maybe get linked */
3914 * HTML <CAPTION> (Table Caption) element handler
3917 html_caption(HANDLER_S
*hd
, int ch
, int cmd
)
3920 html_handoff(hd
, ch
);
3922 else if(cmd
== GF_RESET
){
3923 if(PASS_HTML(hd
->html_data
)){
3924 html_output_raw_tag(hd
->html_data
, "caption");
3927 /* turn ON the centered bit */
3928 CENTER_BIT(hd
->html_data
) = 1;
3931 else if(cmd
== GF_EOD
){
3932 if(PASS_HTML(hd
->html_data
)){
3933 html_output_string(hd
->html_data
, "</caption>");
3936 /* turn OFF the centered bit */
3937 CENTER_BIT(hd
->html_data
) = 0;
3946 * HTML Table <TR> (paragraph) table row
3949 html_tr(HANDLER_S
*hd
, int ch
, int cmd
)
3952 if(PASS_HTML(hd
->html_data
)){
3953 html_handoff(hd
, ch
);
3956 else if(cmd
== GF_RESET
){
3957 if(PASS_HTML(hd
->html_data
)){
3958 html_output_raw_tag(hd
->html_data
, "tr");
3961 /* Make sure there's at least 1 blank line */
3962 html_blank(hd
->html_data
, 0);
3964 else if(cmd
== GF_EOD
){
3965 if(PASS_HTML(hd
->html_data
)){
3966 html_output_string(hd
->html_data
, "</tr>");
3969 /* Make sure there's at least 1 blank line */
3970 html_blank(hd
->html_data
, 0);
3972 return(PASS_HTML(hd
->html_data
)); /* maybe get linked */
3977 * HTML Table <TD> (paragraph) table data
3980 html_td(HANDLER_S
*hd
, int ch
, int cmd
)
3983 if(PASS_HTML(hd
->html_data
)){
3984 html_handoff(hd
, ch
);
3987 else if(cmd
== GF_RESET
){
3988 if(PASS_HTML(hd
->html_data
)){
3989 html_output_raw_tag(hd
->html_data
, "td");
3994 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
3997 if(!strucmp(p
->attribute
, "nowrap")
3998 && (hd
->html_data
->f2
|| hd
->html_data
->n
)){
3999 HTML_DUMP_LIT(hd
->html_data
, " | ", 3);
4004 else if(cmd
== GF_EOD
){
4005 if(PASS_HTML(hd
->html_data
)){
4006 html_output_string(hd
->html_data
, "</td>");
4010 return(PASS_HTML(hd
->html_data
)); /* maybe get linked */
4015 * HTML Table <TH> (paragraph) table head
4018 html_th(HANDLER_S
*hd
, int ch
, int cmd
)
4021 if(PASS_HTML(hd
->html_data
)){
4022 html_handoff(hd
, ch
);
4025 else if(cmd
== GF_RESET
){
4026 if(PASS_HTML(hd
->html_data
)){
4027 html_output_raw_tag(hd
->html_data
, "th");
4032 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
4035 if(!strucmp(p
->attribute
, "nowrap")
4036 && (hd
->html_data
->f2
|| hd
->html_data
->n
)){
4037 HTML_DUMP_LIT(hd
->html_data
, " | ", 3);
4042 else if(cmd
== GF_EOD
){
4043 if(PASS_HTML(hd
->html_data
)){
4044 html_output_string(hd
->html_data
, "</th>");
4048 return(PASS_HTML(hd
->html_data
)); /* don't get linked */
4053 * HTML Table <THEAD> table head
4056 html_thead(HANDLER_S
*hd
, int ch
, int cmd
)
4058 if(PASS_HTML(hd
->html_data
)){
4060 html_handoff(hd
, ch
);
4062 else if(cmd
== GF_RESET
){
4063 html_output_raw_tag(hd
->html_data
, "thead");
4065 else if(cmd
== GF_EOD
){
4066 html_output_string(hd
->html_data
, "</thead>");
4069 return(1); /* GET linked */
4072 return(0); /* don't get linked */
4077 * HTML Table <TBODY> table body
4080 html_tbody(HANDLER_S
*hd
, int ch
, int cmd
)
4082 if(PASS_HTML(hd
->html_data
)){
4084 html_handoff(hd
, ch
);
4086 else if(cmd
== GF_RESET
){
4087 html_output_raw_tag(hd
->html_data
, "tbody");
4089 else if(cmd
== GF_EOD
){
4090 html_output_string(hd
->html_data
, "</tbody>");
4093 return(1); /* GET linked */
4096 return(0); /* don't get linked */
4101 * HTML Table <TFOOT> table body
4104 html_tfoot(HANDLER_S
*hd
, int ch
, int cmd
)
4106 if(PASS_HTML(hd
->html_data
)){
4108 html_handoff(hd
, ch
);
4110 else if(cmd
== GF_RESET
){
4111 html_output_raw_tag(hd
->html_data
, "tfoot");
4113 else if(cmd
== GF_EOD
){
4114 html_output_string(hd
->html_data
, "</tfoot>");
4117 return(1); /* GET linked */
4120 return(0); /* don't get linked */
4125 * HTML <COL> (Table Column Attributes) element handler
4128 html_col(HANDLER_S
*hd
, int ch
, int cmd
)
4130 if(cmd
== GF_RESET
){
4131 if(PASS_HTML(hd
->html_data
)){
4132 html_output_raw_tag(hd
->html_data
, "col");
4136 return(0); /* don't get linked */
4141 * HTML Table <COLGROUP> table body
4144 html_colgroup(HANDLER_S
*hd
, int ch
, int cmd
)
4146 if(PASS_HTML(hd
->html_data
)){
4148 html_handoff(hd
, ch
);
4150 else if(cmd
== GF_RESET
){
4151 html_output_raw_tag(hd
->html_data
, "colgroup");
4153 else if(cmd
== GF_EOD
){
4154 html_output_string(hd
->html_data
, "</colgroup>");
4157 return(1); /* GET linked */
4160 return(0); /* don't get linked */
4165 * HTML <I> (italic text) element handler
4168 html_i(HANDLER_S
*hd
, int ch
, int cmd
)
4171 /* include LITERAL in spaceness test! */
4172 if(hd
->x
&& !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
4173 HTML_ITALIC(hd
->html_data
, 1);
4177 html_handoff(hd
, ch
);
4179 else if(cmd
== GF_RESET
){
4182 else if(cmd
== GF_EOD
){
4184 HTML_ITALIC(hd
->html_data
, 0);
4187 return(1); /* get linked */
4192 * HTML <EM> element handler
4195 html_em(HANDLER_S
*hd
, int ch
, int cmd
)
4198 if(!PASS_HTML(hd
->html_data
)){
4199 /* include LITERAL in spaceness test! */
4200 if(hd
->x
&& !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
4201 HTML_ITALIC(hd
->html_data
, 1);
4206 html_handoff(hd
, ch
);
4208 else if(cmd
== GF_RESET
){
4209 if(PASS_HTML(hd
->html_data
)){
4210 html_output_raw_tag(hd
->html_data
, "em");
4216 else if(cmd
== GF_EOD
){
4217 if(PASS_HTML(hd
->html_data
)){
4218 html_output_string(hd
->html_data
, "</em>");
4222 HTML_ITALIC(hd
->html_data
, 0);
4226 return(1); /* get linked */
4231 * HTML <STRONG> element handler
4234 html_strong(HANDLER_S
*hd
, int ch
, int cmd
)
4237 if(!PASS_HTML(hd
->html_data
)){
4238 /* include LITERAL in spaceness test! */
4239 if(hd
->x
&& !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
4240 HTML_ITALIC(hd
->html_data
, 1);
4245 html_handoff(hd
, ch
);
4247 else if(cmd
== GF_RESET
){
4248 if(PASS_HTML(hd
->html_data
)){
4249 html_output_raw_tag(hd
->html_data
, "strong");
4255 else if(cmd
== GF_EOD
){
4256 if(PASS_HTML(hd
->html_data
)){
4257 html_output_string(hd
->html_data
, "</strong>");
4261 HTML_ITALIC(hd
->html_data
, 0);
4265 return(1); /* get linked */
4270 * HTML <u> (Underline text) element handler
4273 html_u(HANDLER_S
*hd
, int ch
, int cmd
)
4275 if(PASS_HTML(hd
->html_data
)){
4277 html_handoff(hd
, ch
);
4279 else if(cmd
== GF_RESET
){
4280 html_output_raw_tag(hd
->html_data
, "u");
4282 else if(cmd
== GF_EOD
){
4283 html_output_string(hd
->html_data
, "</u>");
4286 return(1); /* get linked */
4289 return(0); /* do NOT get linked */
4294 * HTML <b> (Bold text) element handler
4297 html_b(HANDLER_S
*hd
, int ch
, int cmd
)
4300 if(!PASS_HTML(hd
->html_data
)){
4301 /* include LITERAL in spaceness test! */
4302 if(hd
->x
&& !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
4303 HTML_BOLD(hd
->html_data
, 1);
4308 html_handoff(hd
, ch
);
4310 else if(cmd
== GF_RESET
){
4311 if(PASS_HTML(hd
->html_data
)){
4312 html_output_raw_tag(hd
->html_data
, "b");
4318 else if(cmd
== GF_EOD
){
4319 if(PASS_HTML(hd
->html_data
)){
4320 html_output_string(hd
->html_data
, "</b>");
4324 HTML_BOLD(hd
->html_data
, 0);
4328 return(1); /* get linked */
4333 * HTML <s> (strike-through text) element handler
4336 html_s(HANDLER_S
*hd
, int ch
, int cmd
)
4339 if(!PASS_HTML(hd
->html_data
)){
4340 /* include LITERAL in spaceness test! */
4341 if(hd
->x
&& !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
4342 HTML_STRIKE(hd
->html_data
, 1);
4347 html_handoff(hd
, ch
);
4349 else if(cmd
== GF_RESET
){
4350 if(PASS_HTML(hd
->html_data
)){
4351 html_output_raw_tag(hd
->html_data
, "s");
4357 else if(cmd
== GF_EOD
){
4358 if(PASS_HTML(hd
->html_data
)){
4359 html_output_string(hd
->html_data
, "</s>");
4363 HTML_STRIKE(hd
->html_data
, 0);
4367 return(1); /* get linked */
4372 * HTML <big> (BIG text) element handler
4375 html_big(HANDLER_S
*hd
, int ch
, int cmd
)
4378 /* include LITERAL in spaceness test! */
4379 if(hd
->x
&& !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
4380 HTML_BIG(hd
->html_data
, 1);
4384 html_handoff(hd
, ch
);
4386 else if(cmd
== GF_RESET
){
4389 else if(cmd
== GF_EOD
){
4391 HTML_BIG(hd
->html_data
, 0);
4394 return(1); /* get linked */
4399 * HTML <small> (SMALL text) element handler
4402 html_small(HANDLER_S
*hd
, int ch
, int cmd
)
4405 /* include LITERAL in spaceness test! */
4406 if(hd
->x
&& !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
4407 HTML_SMALL(hd
->html_data
, 1);
4411 html_handoff(hd
, ch
);
4413 else if(cmd
== GF_RESET
){
4416 else if(cmd
== GF_EOD
){
4418 HTML_SMALL(hd
->html_data
, 0);
4421 return(1); /* get linked */
4426 * HTML <FONT> element handler
4429 html_font(HANDLER_S
*hd
, int ch
, int cmd
)
4431 if(PASS_HTML(hd
->html_data
)){
4433 html_handoff(hd
, ch
);
4435 else if(cmd
== GF_RESET
){
4436 html_output_raw_tag(hd
->html_data
, "font");
4438 else if(cmd
== GF_EOD
){
4439 html_output_string(hd
->html_data
, "</font>");
4442 return(1); /* get linked */
4450 * HTML <IMG> element handler
4453 html_img(HANDLER_S
*hd
, int ch
, int cmd
)
4456 char *alt
= NULL
, *src
= NULL
, *s
;
4458 if(cmd
== GF_RESET
){
4459 if(PASS_HTML(hd
->html_data
)){
4460 html_output_raw_tag(hd
->html_data
, "img");
4463 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
4466 if(p
->value
&& p
->value
[0]){
4467 if(!strucmp(p
->attribute
, "alt"))
4469 if(!strucmp(p
->attribute
, "src"))
4474 * Multipart/Related Content ID pointer
4475 * ONLY attached messages are recognized
4476 * if we ever decide web bugs aren't a problem
4477 * anymore then we might expand the scope
4480 && DO_HANDLES(hd
->html_data
)
4481 && RELATED_OK(hd
->html_data
)
4482 && struncmp(src
, "cid:", 4) == 0){
4485 HANDLE_S
*h
= new_handle(HANDLESP(hd
->html_data
));
4488 h
->h
.img
.src
= cpystr(src
+ 4);
4489 h
->h
.img
.alt
= cpystr((alt
) ? alt
: "Attached Image");
4491 HTML_TEXT(hd
->html_data
, TAG_EMBED
);
4492 HTML_TEXT(hd
->html_data
, TAG_HANDLE
);
4494 sprintf(buf
, "%d", h
->key
);
4496 HTML_TEXT(hd
->html_data
, n
);
4497 for(i
= 0; i
< n
; i
++){
4498 unsigned int uic
= buf
[i
];
4499 HTML_TEXT(hd
->html_data
, uic
);
4504 else if(alt
&& strlen(alt
) < 256){ /* arbitrary "reasonable" limit */
4505 HTML_DUMP_LIT(hd
->html_data
, alt
, strlen(alt
));
4506 HTML_TEXT(hd
->html_data
, ' ');
4510 && (s
= strrindex(src
, '/'))
4512 HTML_TEXT(hd
->html_data
, '[');
4513 HTML_DUMP_LIT(hd
->html_data
, s
, strlen(s
));
4514 HTML_TEXT(hd
->html_data
, ']');
4515 HTML_TEXT(hd
->html_data
, ' ');
4519 /* text filler of last resort */
4520 HTML_DUMP_LIT(hd
->html_data
, "[IMAGE] ", 7);
4524 return(0); /* don't get linked */
4529 * HTML <MAP> (Image Map) element handler
4532 html_map(HANDLER_S
*hd
, int ch
, int cmd
)
4534 if(PASS_HTML(hd
->html_data
) && PASS_IMAGES(hd
->html_data
)){
4536 html_handoff(hd
, ch
);
4538 else if(cmd
== GF_RESET
){
4539 html_output_raw_tag(hd
->html_data
, "map");
4541 else if(cmd
== GF_EOD
){
4542 html_output_string(hd
->html_data
, "</map>");
4553 * HTML <AREA> (Image Map Area) element handler
4556 html_area(HANDLER_S
*hd
, int ch
, int cmd
)
4558 if(PASS_HTML(hd
->html_data
) && PASS_IMAGES(hd
->html_data
)){
4560 html_handoff(hd
, ch
);
4562 else if(cmd
== GF_RESET
){
4563 html_output_raw_tag(hd
->html_data
, "area");
4565 else if(cmd
== GF_EOD
){
4566 html_output_string(hd
->html_data
, "</area>");
4577 * HTML <FORM> (Form) element handler
4580 html_form(HANDLER_S
*hd
, int ch
, int cmd
)
4582 if(PASS_HTML(hd
->html_data
)){
4584 html_handoff(hd
, ch
);
4586 else if(cmd
== GF_RESET
){
4589 /* SECURITY: make sure to redirect to new browser instance */
4590 for(pp
= &(HD(hd
->html_data
)->el_data
->attribs
);
4591 *pp
&& (*pp
)->attribute
;
4593 if(!strucmp((*pp
)->attribute
, "target")){
4595 fs_give((void **) &(*pp
)->value
);
4597 (*pp
)->value
= cpystr("_blank");
4601 *pp
= (PARAMETER
*)fs_get(sizeof(PARAMETER
));
4602 memset(*pp
, 0, sizeof(PARAMETER
));
4603 (*pp
)->attribute
= cpystr("target");
4604 (*pp
)->value
= cpystr("_blank");
4607 html_output_raw_tag(hd
->html_data
, "form");
4609 else if(cmd
== GF_EOD
){
4610 html_output_string(hd
->html_data
, "</form>");
4614 if(cmd
== GF_RESET
){
4615 html_blank(hd
->html_data
, 0);
4616 HTML_DUMP_LIT(hd
->html_data
, "[FORM]", 6);
4617 html_blank(hd
->html_data
, 0);
4621 return(PASS_HTML(hd
->html_data
)); /* maybe get linked */
4626 * HTML <INPUT> (Form) element handler
4629 html_input(HANDLER_S
*hd
, int ch
, int cmd
)
4631 if(PASS_HTML(hd
->html_data
)){
4632 if(cmd
== GF_RESET
){
4633 html_output_raw_tag(hd
->html_data
, "input");
4637 return(0); /* don't get linked */
4642 * HTML <BUTTON> (Form) element handler
4645 html_button(HANDLER_S
*hd
, int ch
, int cmd
)
4647 if(PASS_HTML(hd
->html_data
)){
4649 html_handoff(hd
, ch
);
4651 else if(cmd
== GF_RESET
){
4652 html_output_raw_tag(hd
->html_data
, "button");
4654 else if(cmd
== GF_EOD
){
4655 html_output_string(hd
->html_data
, "</button>");
4658 return(1); /* get linked */
4666 * HTML <OPTION> (Form) element handler
4669 html_option(HANDLER_S
*hd
, int ch
, int cmd
)
4671 if(PASS_HTML(hd
->html_data
)){
4673 html_handoff(hd
, ch
);
4675 else if(cmd
== GF_RESET
){
4676 html_output_raw_tag(hd
->html_data
, "option");
4678 else if(cmd
== GF_EOD
){
4679 html_output_string(hd
->html_data
, "</option>");
4682 return(1); /* get linked */
4690 * HTML <OPTGROUP> (Form) element handler
4693 html_optgroup(HANDLER_S
*hd
, int ch
, int cmd
)
4695 if(PASS_HTML(hd
->html_data
)){
4697 html_handoff(hd
, ch
);
4699 else if(cmd
== GF_RESET
){
4700 html_output_raw_tag(hd
->html_data
, "optgroup");
4702 else if(cmd
== GF_EOD
){
4703 html_output_string(hd
->html_data
, "</optgroup>");
4706 return(1); /* get linked */
4714 * HTML <SELECT> (Form) element handler
4717 html_select(HANDLER_S
*hd
, int ch
, int cmd
)
4719 if(PASS_HTML(hd
->html_data
)){
4721 html_handoff(hd
, ch
);
4723 else if(cmd
== GF_RESET
){
4724 html_output_raw_tag(hd
->html_data
, "select");
4726 else if(cmd
== GF_EOD
){
4727 html_output_string(hd
->html_data
, "</select>");
4730 return(1); /* get linked */
4738 * HTML <TEXTAREA> (Form) element handler
4741 html_textarea(HANDLER_S
*hd
, int ch
, int cmd
)
4743 if(PASS_HTML(hd
->html_data
)){
4745 html_handoff(hd
, ch
);
4747 else if(cmd
== GF_RESET
){
4748 html_output_raw_tag(hd
->html_data
, "textarea");
4750 else if(cmd
== GF_EOD
){
4751 html_output_string(hd
->html_data
, "</textarea>");
4754 return(1); /* get linked */
4762 * HTML <LABEL> (Form) element handler
4765 html_label(HANDLER_S
*hd
, int ch
, int cmd
)
4767 if(PASS_HTML(hd
->html_data
)){
4769 html_handoff(hd
, ch
);
4771 else if(cmd
== GF_RESET
){
4772 html_output_raw_tag(hd
->html_data
, "label");
4774 else if(cmd
== GF_EOD
){
4775 html_output_string(hd
->html_data
, "</label>");
4778 return(1); /* get linked */
4786 * HTML <FIELDSET> (Form) element handler
4789 html_fieldset(HANDLER_S
*hd
, int ch
, int cmd
)
4791 if(PASS_HTML(hd
->html_data
)){
4793 html_handoff(hd
, ch
);
4795 else if(cmd
== GF_RESET
){
4796 html_output_raw_tag(hd
->html_data
, "fieldset");
4798 else if(cmd
== GF_EOD
){
4799 html_output_string(hd
->html_data
, "</fieldset>");
4802 return(1); /* get linked */
4810 * HTML <HEAD> element handler
4813 html_head(HANDLER_S
*hd
, int ch
, int cmd
)
4816 html_handoff(hd
, ch
);
4818 else if(cmd
== GF_RESET
){
4819 HD(hd
->html_data
)->head
= 1;
4821 else if(cmd
== GF_EOD
){
4822 HD(hd
->html_data
)->head
= 0;
4825 return(1); /* get linked */
4830 * HTML <BASE> element handler
4833 html_base(HANDLER_S
*hd
, int ch
, int cmd
)
4835 if(cmd
== GF_RESET
){
4836 if(HD(hd
->html_data
)->head
&& !HTML_BASE(hd
->html_data
)){
4839 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
4840 p
&& p
->attribute
&& strucmp(p
->attribute
, "HREF");
4844 if(p
&& p
->value
&& !((HTML_OPT_S
*)(hd
->html_data
)->opt
)->base
)
4845 ((HTML_OPT_S
*)(hd
->html_data
)->opt
)->base
= cpystr(p
->value
);
4849 return(0); /* DON'T get linked */
4854 * HTML <TITLE> element handler
4857 html_title(HANDLER_S
*hd
, int ch
, int cmd
)
4860 if(hd
->x
+ 1 >= hd
->y
){
4862 fs_resize((void **)&hd
->s
, (size_t)hd
->y
* sizeof(unsigned char));
4865 hd
->s
[hd
->x
++] = (unsigned char) ch
;
4867 else if(cmd
== GF_RESET
){
4870 hd
->s
= (unsigned char *)fs_get((size_t)hd
->y
* sizeof(unsigned char));
4872 else if(cmd
== GF_EOD
){
4873 /* Down the road we probably want to give these bytes to
4876 hd
->s
[hd
->x
] = '\0';
4877 fs_give((void **)&hd
->s
);
4880 return(1); /* get linked */
4885 * HTML <BODY> element handler
4888 html_body(HANDLER_S
*hd
, int ch
, int cmd
)
4891 html_handoff(hd
, ch
);
4893 else if(cmd
== GF_RESET
){
4894 if(PASS_HTML(hd
->html_data
)){
4896 char **style
= NULL
, *text
= NULL
, *bgcolor
= NULL
, *pcs
;
4898 /* modify any attributes in a useful way? */
4899 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
4903 if(!strucmp(p
->attribute
, "style"))
4905 else if(!strucmp(p
->attribute
, "text"))
4908 * bgcolor NOT passed since user setting takes precedence
4910 else if(!strucmp(p->attribute, "bgcolor"))
4915 /* colors pretty much it */
4916 if(text
|| bgcolor
){
4918 tp
= (PARAMETER
*)fs_get(sizeof(PARAMETER
));
4919 memset(tp
, 0, sizeof(PARAMETER
));
4920 tp
->next
= HD(hd
->html_data
)->el_data
->attribs
;
4921 HD(hd
->html_data
)->el_data
->attribs
= tp
;
4922 tp
->attribute
= cpystr("style");
4924 tmp_20k_buf
[0] = '\0';
4929 snprintf(tmp_20k_buf
, SIZEOF_20KBUF
, "%s", *style
);
4930 fs_give((void **) style
);
4931 pcs
= "; %s%s%s%s%s";
4934 snprintf(tmp_20k_buf
+ strlen(tmp_20k_buf
),
4935 SIZEOF_20KBUF
- strlen(tmp_20k_buf
),
4937 (text
) ? "color: " : "", (text
) ? text
: "",
4938 (text
&& bgcolor
) ? ";" : "",
4939 (bgcolor
) ? "background-color: " : "", (bgcolor
) ? bgcolor
: "");
4940 *style
= cpystr(tmp_20k_buf
);
4943 html_output_raw_tag(hd
->html_data
, "div");
4946 HD(hd
->html_data
)->body
= 1;
4948 else if(cmd
== GF_EOD
){
4949 if(PASS_HTML(hd
->html_data
)){
4950 html_output_string(hd
->html_data
, "</div>");
4953 HD(hd
->html_data
)->body
= 0;
4956 return(1); /* get linked */
4961 * HTML <A> (Anchor) element handler
4964 html_a(HANDLER_S
*hd
, int ch
, int cmd
)
4967 html_handoff(hd
, ch
);
4969 if(hd
->dp
) /* remember text within anchor tags */
4970 so_writec(ch
, (STORE_S
*) hd
->dp
);
4972 else if(cmd
== GF_RESET
){
4976 PARAMETER
*p
, *href
= NULL
, *name
= NULL
;
4979 * Pending Anchor!?!?
4980 * space insertion/line breaking that's yet to get done...
4982 if(HD(hd
->html_data
)->prefix
){
4983 dprint((2, "-- html error: nested or unterminated anchor\n"));
4988 * Look for valid Anchor data vis the filter installer's parms
4989 * (e.g., Only allow references to our internal URLs if asked)
4991 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
4994 if(!strucmp(p
->attribute
, "HREF")
4996 && (HANDLES_LOC(hd
->html_data
)
4997 || struncmp(p
->value
, "x-alpine-", 9)
4998 || struncmp(p
->value
, "x-pine-help", 11)
4999 || p
->value
[0] == '#'))
5001 else if(!strucmp(p
->attribute
, "NAME"))
5004 if(DO_HANDLES(hd
->html_data
) && (href
|| name
)){
5005 h
= new_handle(HANDLESP(hd
->html_data
));
5008 * Enhancement: we might want to get fancier and parse the
5009 * href a bit further such that we can launch images using
5010 * our image viewer, or browse local files or directories
5011 * with our internal tools. Of course, having the jump-off
5012 * point into text/html always be the defined "web-browser",
5013 * just might be the least confusing UI-wise...
5017 if(name
&& name
->value
)
5018 h
->h
.url
.name
= cpystr(name
->value
);
5021 * Prepare to build embedded prefix...
5023 HD(hd
->html_data
)->prefix
= (int *) fs_get(64 * sizeof(int));
5027 * Is this something that looks like a URL? If not and
5028 * we were giving some "base" string, proceed ala RFC1808...
5032 removing_leading_and_trailing_white_space(href
->value
);
5033 if(HTML_BASE(hd
->html_data
) && !rfc1738_scan(href
->value
, &n
)){
5034 html_a_relative(HTML_BASE(hd
->html_data
), href
->value
, h
);
5036 else if(!(NO_RELATIVE(hd
->html_data
) && html_href_relative(href
->value
)))
5037 h
->h
.url
.path
= cpystr(href
->value
);
5039 if(pico_usingcolor()){
5040 char *fg
= NULL
, *bg
= NULL
, *q
;
5042 if(ps_global
->VAR_SLCTBL_FORE_COLOR
5043 && colorcmp(ps_global
->VAR_SLCTBL_FORE_COLOR
,
5044 ps_global
->VAR_NORM_FORE_COLOR
))
5045 fg
= ps_global
->VAR_SLCTBL_FORE_COLOR
;
5047 if(ps_global
->VAR_SLCTBL_BACK_COLOR
5048 && colorcmp(ps_global
->VAR_SLCTBL_BACK_COLOR
,
5049 ps_global
->VAR_NORM_BACK_COLOR
))
5050 bg
= ps_global
->VAR_SLCTBL_BACK_COLOR
;
5056 * The blacks are just known good colors for testing
5057 * whether the other color is good.
5059 tmp
= new_color_pair(fg
? fg
: colorx(COL_BLACK
),
5060 bg
? bg
: colorx(COL_BLACK
));
5061 if(pico_is_good_colorpair(tmp
)){
5062 q
= color_embed(fg
, bg
);
5064 for(i
= 0; q
[i
]; i
++)
5065 HD(hd
->html_data
)->prefix
[x
++] = q
[i
];
5069 free_color_pair(&tmp
);
5072 if(F_OFF(F_SLCTBL_ITEM_NOBOLD
, ps_global
))
5073 HD(hd
->html_data
)->prefix
[x
++] = HTML_DOBOLD
;
5076 HD(hd
->html_data
)->prefix
[x
++] = HTML_DOBOLD
;
5079 HD(hd
->html_data
)->prefix
[x
++] = TAG_EMBED
;
5080 HD(hd
->html_data
)->prefix
[x
++] = TAG_HANDLE
;
5082 snprintf(buf
, sizeof(buf
), "%ld", hd
->x
= h
->key
);
5083 HD(hd
->html_data
)->prefix
[x
++] = n
= strlen(buf
);
5084 for(i
= 0; i
< n
; i
++)
5085 HD(hd
->html_data
)->prefix
[x
++] = buf
[i
];
5087 HD(hd
->html_data
)->prefix_used
= x
;
5089 hd
->dp
= (void *) so_get(CharStar
, NULL
, EDIT_ACCESS
);
5092 else if(cmd
== GF_EOD
){
5096 return(1); /* get linked */
5101 html_a_prefix(FILTER_S
*f
)
5105 /* Do this so we don't visit from html_output... */
5106 prefix
= HD(f
)->prefix
;
5107 HD(f
)->prefix
= NULL
;
5109 for(n
= 0; n
< HD(f
)->prefix_used
; n
++)
5110 html_a_output_prefix(f
, prefix
[n
]);
5112 fs_give((void **) &prefix
);
5117 * html_a_finish - house keeping associated with end of link tag
5120 html_a_finish(HANDLER_S
*hd
)
5122 if(DO_HANDLES(hd
->html_data
)){
5123 if(HD(hd
->html_data
)->prefix
){
5124 if(!PASS_HTML(hd
->html_data
)){
5125 char *empty_link
= "[LINK]";
5128 html_a_prefix(hd
->html_data
);
5129 for(i
= 0; empty_link
[i
]; i
++)
5130 html_output(hd
->html_data
, empty_link
[i
]);
5134 if(pico_usingcolor()){
5135 char *fg
= NULL
, *bg
= NULL
, *p
;
5138 if(ps_global
->VAR_SLCTBL_FORE_COLOR
5139 && colorcmp(ps_global
->VAR_SLCTBL_FORE_COLOR
,
5140 ps_global
->VAR_NORM_FORE_COLOR
))
5141 fg
= ps_global
->VAR_NORM_FORE_COLOR
;
5143 if(ps_global
->VAR_SLCTBL_BACK_COLOR
5144 && colorcmp(ps_global
->VAR_SLCTBL_BACK_COLOR
,
5145 ps_global
->VAR_NORM_BACK_COLOR
))
5146 bg
= ps_global
->VAR_NORM_BACK_COLOR
;
5148 if(F_OFF(F_SLCTBL_ITEM_NOBOLD
, ps_global
))
5149 HTML_BOLD(hd
->html_data
, 0); /* turn OFF bold */
5155 * The blacks are just known good colors for testing
5156 * whether the other color is good.
5158 tmp
= new_color_pair(fg
? fg
: colorx(COL_BLACK
),
5159 bg
? bg
: colorx(COL_BLACK
));
5160 if(pico_is_good_colorpair(tmp
)){
5161 p
= color_embed(fg
, bg
);
5163 for(i
= 0; p
[i
]; i
++)
5164 html_output(hd
->html_data
, p
[i
]);
5168 free_color_pair(&tmp
);
5172 HTML_BOLD(hd
->html_data
, 0); /* turn OFF bold */
5174 html_output(hd
->html_data
, TAG_EMBED
);
5175 html_output(hd
->html_data
, TAG_HANDLEOFF
);
5177 html_a_output_info(hd
);
5183 * html_output_a_prefix - dump Anchor prefix data
5186 html_a_output_prefix(FILTER_S
*f
, int c
)
5202 * html_a_output_info - dump possibly deceptive link info into text.
5203 * phark the phishers.
5206 html_a_output_info(HANDLER_S
*hd
)
5208 int l
, risky
= 0, hl
= 0, tl
;
5209 char *url
= NULL
, *hn
= NULL
, *txt
;
5212 /* find host anchor references */
5213 if((h
= get_handle(*HANDLESP(hd
->html_data
), (int) hd
->x
)) != NULL
5214 && h
->h
.url
.path
!= NULL
5215 && (hn
= rfc1738_scan(rfc1738_str(url
= cpystr(h
->h
.url
.path
)), &l
)) != NULL
5216 && (hn
= srchstr(hn
,"://")) != NULL
){
5218 for(hn
+= 3, hl
= 0; hn
[hl
] && hn
[hl
] != '/' && hn
[hl
] != '?'; hl
++)
5224 * look over anchor's text to see if there's a
5225 * mismatch between href target and url-ish
5226 * looking text. throw a red flag if so.
5227 * similarly, toss one if the target's referenced
5231 so_writec('\0', (STORE_S
*) hd
->dp
);
5233 if((txt
= (char *) so_text((STORE_S
*) hd
->dp
)) != NULL
5234 && (txt
= rfc1738_scan(txt
, &tl
)) != NULL
5235 && (txt
= srchstr(txt
,"://")) != NULL
){
5237 for(txt
+= 3, tl
= 0; txt
[tl
] && txt
[tl
] != '/' && txt
[tl
] != '?'; tl
++)
5243 /* look for non matching text */
5244 for(l
= 0; l
< tl
&& l
< hl
; l
++)
5245 if(tolower((unsigned char) txt
[l
]) != tolower((unsigned char) hn
[l
])){
5251 so_give((STORE_S
**) &hd
->dp
);
5254 /* look for literal IP, anything possibly encoded or auth specifier */
5258 for(l
= 0; l
< hl
; l
++){
5259 if(hn
[l
] == '@' || hn
[l
] == '%'){
5263 else if(!(hn
[l
] == '.' || isdigit((unsigned char) hn
[l
])))
5271 /* Insert text of link's domain */
5272 if(SHOWSERVER(hd
->html_data
)){
5274 COLOR_PAIR
*col
= NULL
, *colnorm
= NULL
;
5276 html_output(hd
->html_data
, ' ');
5277 html_output(hd
->html_data
, '[');
5279 if(pico_usingcolor()
5280 && ps_global
->VAR_METAMSG_FORE_COLOR
5281 && ps_global
->VAR_METAMSG_BACK_COLOR
5282 && (col
= new_color_pair(ps_global
->VAR_METAMSG_FORE_COLOR
,
5283 ps_global
->VAR_METAMSG_BACK_COLOR
))){
5284 if(!pico_is_good_colorpair(col
))
5285 free_color_pair(&col
);
5288 q
= color_embed(col
->fg
, col
->bg
);
5290 for(l
= 0; q
[l
]; l
++)
5291 html_output(hd
->html_data
, q
[l
]);
5295 for(l
= 0; l
< hl
; l
++)
5296 html_output(hd
->html_data
, hn
[l
]);
5299 if(ps_global
->VAR_NORM_FORE_COLOR
5300 && ps_global
->VAR_NORM_BACK_COLOR
5301 && (colnorm
= new_color_pair(ps_global
->VAR_NORM_FORE_COLOR
,
5302 ps_global
->VAR_NORM_BACK_COLOR
))){
5303 if(!pico_is_good_colorpair(colnorm
))
5304 free_color_pair(&colnorm
);
5307 q
= color_embed(colnorm
->fg
, colnorm
->bg
);
5308 free_color_pair(&colnorm
);
5310 for(l
= 0; q
[l
]; l
++)
5311 html_output(hd
->html_data
, q
[l
]);
5315 free_color_pair(&col
);
5318 html_output(hd
->html_data
, ']');
5323 * if things look OK so far, make sure nothing within
5324 * the url looks too fishy...
5327 && (hn
= rfc1738_scan(hn
, &l
)) != NULL
5328 && (hn
= srchstr(hn
,"://")) != NULL
){
5331 for(hn
+= 3, hl
= 0; hn
[hl
] && hn
[hl
] != '/' && hn
[hl
] != '?'; hl
++){
5333 * auth spec, encoded characters, or possibly non-standard port
5334 * should raise a red flag
5336 if(hn
[hl
] == '@' || hn
[hl
] == '%' || hn
[hl
] == ':'){
5340 else if(!(hn
[hl
] == '.' || isdigit((unsigned char) hn
[hl
])))
5344 /* dotted-dec/raw-int address should cause suspicion as well */
5349 if(risky
&& ((HTML_OPT_S
*) hd
->html_data
->opt
)->warnrisk_f
)
5350 (*((HTML_OPT_S
*) hd
->html_data
->opt
)->warnrisk_f
)();
5353 so_give((STORE_S
**) &hd
->dp
);
5356 fs_give((void **) &url
);
5362 * relative_url - put full url path in h based on base and relative url
5365 html_a_relative(char *base_url
, char *rel_url
, HANDLE_S
*h
)
5368 char tmp
[MAILTMPLEN
], *p
, *q
;
5369 char *scheme
= NULL
, *net
= NULL
, *path
= NULL
,
5370 *parms
= NULL
, *query
= NULL
, *frag
= NULL
,
5371 *base_scheme
= NULL
, *base_net_loc
= NULL
,
5372 *base_path
= NULL
, *base_parms
= NULL
,
5373 *base_query
= NULL
, *base_frag
= NULL
,
5374 *rel_scheme
= NULL
, *rel_net_loc
= NULL
,
5375 *rel_path
= NULL
, *rel_parms
= NULL
,
5376 *rel_query
= NULL
, *rel_frag
= NULL
;
5378 /* Rough parse of base URL */
5379 rfc1808_tokens(base_url
, &base_scheme
, &base_net_loc
, &base_path
,
5380 &base_parms
, &base_query
, &base_frag
);
5382 /* Rough parse of this URL */
5383 rfc1808_tokens(rel_url
, &rel_scheme
, &rel_net_loc
, &rel_path
,
5384 &rel_parms
, &rel_query
, &rel_frag
);
5386 scheme
= rel_scheme
; /* defaults */
5392 if(!scheme
&& base_scheme
){
5393 scheme
= base_scheme
;
5399 for(p
= q
= base_path
; /* Drop base path's tail */
5400 (p
= strchr(p
, '/'));
5404 len
= q
- base_path
;
5409 if(len
+ strlen(rel_path
) < sizeof(tmp
)-1){
5411 snprintf(path
= tmp
, sizeof(tmp
), "%.*s", (int) len
, base_path
);
5413 strncpy(tmp
+ len
, rel_path
, sizeof(tmp
)-len
);
5414 tmp
[sizeof(tmp
)-1] = '\0';
5416 /* Follow RFC 1808 "Step 6" */
5417 for(p
= tmp
; (p
= strchr(p
, '.')); )
5420 * a) All occurrences of "./", where "." is a
5421 * complete path segment, are removed.
5425 for(q
= p
; (*q
= *(q
+2)) != '\0'; q
++)
5433 * b) If the path ends with "." as a
5434 * complete path segment, that "." is
5438 if(p
== tmp
|| *(p
-1) == '/')
5446 * c) All occurrences of "<segment>/../",
5447 * where <segment> is a complete path
5448 * segment not equal to "..", are removed.
5449 * Removal of these path segments is
5450 * performed iteratively, removing the
5451 * leftmost matching pattern on each
5452 * iteration, until no matching pattern
5455 * d) If the path ends with "<segment>/..",
5456 * where <segment> is a complete path
5457 * segment not equal to "..", that
5458 * "<segment>/.." is removed.
5462 for(q
= p
- 2; q
> tmp
&& *q
!= '/'; q
--)
5468 if(q
+ 1 == p
/* no "//.." */
5469 || (*q
== '.' /* and "../.." */
5480 for(; (*q
= *(q
+len
)) != '\0'; q
++)
5505 path
= ""; /* lame. */
5519 len
= (scheme
? strlen(scheme
) : 0) + (net
? strlen(net
) : 0)
5520 + (path
? strlen(path
) : 0) + (parms
? strlen(parms
) : 0)
5521 + (query
? strlen(query
) : 0) + (frag
? strlen(frag
) : 0) + 8;
5523 h
->h
.url
.path
= (char *) fs_get(len
* sizeof(char));
5524 snprintf(h
->h
.url
.path
, len
, "%s%s%s%s%s%s%s%s%s%s%s%s",
5525 scheme
? scheme
: "", scheme
? ":" : "",
5526 net
? "//" : "", net
? net
: "",
5527 (path
&& *path
== '/') ? "" : ((path
&& net
) ? "/" : ""),
5529 parms
? ";" : "", parms
? parms
: "",
5530 query
? "?" : "", query
? query
: "",
5531 frag
? "#" : "", frag
? frag
: "");
5534 fs_give((void **) &base_scheme
);
5537 fs_give((void **) &base_net_loc
);
5540 fs_give((void **) &base_path
);
5543 fs_give((void **) &base_parms
);
5546 fs_give((void **) &base_query
);
5549 fs_give((void **) &base_frag
);
5552 fs_give((void **) &rel_scheme
);
5555 fs_give((void **) &rel_net_loc
);
5558 fs_give((void **) &rel_parms
);
5561 fs_give((void **) &rel_query
);
5564 fs_give((void **) &rel_frag
);
5567 fs_give((void **) &rel_path
);
5572 * html_href_relative - href
5575 html_href_relative(char *url
)
5580 for(i
= 0; i
< 32 && url
[i
]; i
++)
5581 if(!(isalpha((unsigned char) url
[i
]) || url
[i
] == '_' || url
[i
] == '-')){
5593 * HTML <UL> (Unordered List) element handler
5596 html_ul(HANDLER_S
*hd
, int ch
, int cmd
)
5599 html_handoff(hd
, ch
);
5601 else if(cmd
== GF_RESET
){
5602 if(PASS_HTML(hd
->html_data
)){
5603 html_output_raw_tag(hd
->html_data
, "ul");
5606 HD(hd
->html_data
)->li_pending
= 1;
5607 html_blank(hd
->html_data
, 0);
5610 else if(cmd
== GF_EOD
){
5611 if(PASS_HTML(hd
->html_data
)){
5612 html_output_string(hd
->html_data
, "</ul>");
5615 html_blank(hd
->html_data
, 0);
5617 if(!HD(hd
->html_data
)->li_pending
)
5618 html_indent(hd
->html_data
, -4, HTML_ID_INC
);
5620 HD(hd
->html_data
)->li_pending
= 0;
5624 return(1); /* get linked */
5629 * HTML <OL> (Ordered List) element handler
5632 html_ol(HANDLER_S
*hd
, int ch
, int cmd
)
5635 html_handoff(hd
, ch
);
5637 else if(cmd
== GF_RESET
){
5638 if(PASS_HTML(hd
->html_data
)){
5639 html_output_raw_tag(hd
->html_data
, "ol");
5644 * Signal that we're expecting to see <LI> as our next element
5645 * and set the the initial ordered count.
5647 hd
->x
= 1L; /* set default */
5648 hd
->y
= LIST_DECIMAL
; /* set default */
5649 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
5653 if(!strucmp(p
->attribute
, "TYPE")){
5654 if(!strucmp(p
->value
, "a")) /* alpha, lowercase */
5655 hd
->y
= LIST_ALPHALO
;
5656 else if(!strucmp(p
->value
, "A")) /* alpha, uppercase */
5657 hd
->y
= LIST_ALPHAUP
;
5658 else if(!strucmp(p
->value
, "i")) /* roman, lowercase */
5659 hd
->y
= LIST_ROMANLO
;
5660 else if(!strucmp(p
->value
, "I")) /* roman, uppercase */
5661 hd
->y
= LIST_ROMANUP
;
5662 else if(strucmp(p
->value
, "1")) /* decimal, the default */
5663 hd
->y
= LIST_UNKNOWN
;
5665 else if(!strucmp(p
->attribute
, "START"))
5666 hd
->x
= atol(p
->value
);
5667 // else ADD SUPPORT FOR OTHER ATTRIBUTES... LATER
5668 // this is not so simple. The main missing support
5669 // is for the STYLE attribute, but implementing that
5670 // correctly will take time, so will be implemented
5671 // after version 2.21 is released.
5673 HD(hd
->html_data
)->li_pending
= 1;
5674 html_blank(hd
->html_data
, 0);
5677 else if(cmd
== GF_EOD
){
5678 if(PASS_HTML(hd
->html_data
)){
5679 html_output_string(hd
->html_data
, "</ol>");
5682 html_blank(hd
->html_data
, 0);
5684 if(!HD(hd
->html_data
)->li_pending
)
5685 html_indent(hd
->html_data
, -4, HTML_ID_INC
);
5687 HD(hd
->html_data
)->li_pending
= 0;
5691 return(1); /* get linked */
5696 * HTML <MENU> (Menu List) element handler
5699 html_menu(HANDLER_S
*hd
, int ch
, int cmd
)
5702 html_handoff(hd
, ch
);
5704 else if(cmd
== GF_RESET
){
5705 if(PASS_HTML(hd
->html_data
)){
5706 html_output_raw_tag(hd
->html_data
, "menu");
5709 HD(hd
->html_data
)->li_pending
= 1;
5712 else if(cmd
== GF_EOD
){
5713 if(PASS_HTML(hd
->html_data
)){
5714 html_output_string(hd
->html_data
, "</menu>");
5717 html_blank(hd
->html_data
, 0);
5719 if(!HD(hd
->html_data
)->li_pending
)
5720 html_indent(hd
->html_data
, -4, HTML_ID_INC
);
5722 HD(hd
->html_data
)->li_pending
= 0;
5726 return(1); /* get linked */
5731 * HTML <DIR> (Directory List) element handler
5734 html_dir(HANDLER_S
*hd
, int ch
, int cmd
)
5737 html_handoff(hd
, ch
);
5739 else if(cmd
== GF_RESET
){
5740 if(PASS_HTML(hd
->html_data
)){
5741 html_output_raw_tag(hd
->html_data
, "dir");
5744 HD(hd
->html_data
)->li_pending
= 1;
5747 else if(cmd
== GF_EOD
){
5748 if(PASS_HTML(hd
->html_data
)){
5749 html_output_string(hd
->html_data
, "</dir>");
5752 html_blank(hd
->html_data
, 0);
5754 if(!HD(hd
->html_data
)->li_pending
)
5755 html_indent(hd
->html_data
, -4, HTML_ID_INC
);
5757 HD(hd
->html_data
)->li_pending
= 0;
5761 return(1); /* get linked */
5766 * HTML <LI> (List Item) element handler
5769 html_li(HANDLER_S
*hd
, int ch
, int cmd
)
5772 if(PASS_HTML(hd
->html_data
)){
5773 html_handoff(hd
, ch
);
5776 else if(cmd
== GF_RESET
){
5777 HANDLER_S
*p
, *found
= NULL
;
5780 * There better be a an unordered list, ordered list,
5781 * Menu or Directory handler installed
5782 * or else we crap out...
5784 for(p
= HANDLERS(hd
->html_data
); p
; p
= p
->below
)
5785 if(EL(p
)->handler
== html_ul
5786 || EL(p
)->handler
== html_ol
5787 || EL(p
)->handler
== html_menu
5788 || EL(p
)->handler
== html_dir
){
5794 if(PASS_HTML(hd
->html_data
)){
5797 char buf
[16], tmp
[16], *p
;
5800 /* Start a new line */
5801 html_blank(hd
->html_data
, 0);
5803 /* adjust indent level if needed */
5804 if(HD(hd
->html_data
)->li_pending
){
5805 html_indent(hd
->html_data
, 4, HTML_ID_INC
);
5806 HD(hd
->html_data
)->li_pending
= 0;
5809 if(EL(found
)->handler
== html_ul
){
5810 int l
= html_indent(hd
->html_data
, 0, HTML_ID_GET
);
5812 strncpy(buf
, " ", sizeof(buf
));
5813 buf
[1] = (l
< 5) ? '*' : (l
< 9) ? '+' : (l
< 17) ? 'o' : '#';
5815 else if(EL(found
)->handler
== html_ol
){
5816 if(found
->y
== LIST_DECIMAL
|| found
->y
== LIST_UNKNOWN
)
5817 snprintf(tmp
, sizeof(tmp
), "%ld", found
->x
++);
5818 else if(found
->y
== LIST_ALPHALO
)
5819 convert_decimal_to_alpha(tmp
, sizeof(tmp
), found
->x
++, 'a');
5820 else if(found
->y
== LIST_ALPHAUP
)
5821 convert_decimal_to_alpha(tmp
, sizeof(tmp
), found
->x
++, 'A');
5822 else if(found
->y
== LIST_ROMANLO
)
5823 convert_decimal_to_roman(tmp
, sizeof(tmp
), found
->x
++, 'i');
5824 else if(found
->y
== LIST_ROMANUP
)
5825 convert_decimal_to_roman(tmp
, sizeof(tmp
), found
->x
++, 'I');
5826 snprintf(buf
, sizeof(buf
), " %s.", tmp
);
5827 buf
[sizeof(buf
)-1] = '\0';
5829 else if(EL(found
)->handler
== html_menu
){
5830 strncpy(buf
, " ->", sizeof(buf
));
5831 buf
[sizeof(buf
)-1] = '\0';
5834 html_indent(hd
->html_data
, -4, HTML_ID_INC
);
5836 /* So we don't munge whitespace */
5837 wrapstate
= HD(hd
->html_data
)->wrapstate
;
5838 HD(hd
->html_data
)->wrapstate
= 0;
5840 html_write_indent(hd
->html_data
, HD(hd
->html_data
)->indent_level
);
5841 for(p
= buf
; *p
; p
++)
5842 html_output(hd
->html_data
, (int) *p
);
5843 HD(hd
->html_data
)->wrapstate
= wrapstate
;
5844 html_indent(hd
->html_data
, 4, HTML_ID_INC
);
5846 /* else BUG: should really bitch about this */
5849 if(PASS_HTML(hd
->html_data
)){
5850 html_output_raw_tag(hd
->html_data
, "li");
5851 return(1); /* get linked */
5854 else if(cmd
== GF_EOD
){
5855 if(PASS_HTML(hd
->html_data
)){
5856 html_output_string(hd
->html_data
, "</li>");
5860 return(PASS_HTML(hd
->html_data
)); /* DON'T get linked */
5865 * HTML <DL> (Definition List) element handler
5868 html_dl(HANDLER_S
*hd
, int ch
, int cmd
)
5871 html_handoff(hd
, ch
);
5873 else if(cmd
== GF_RESET
){
5874 if(PASS_HTML(hd
->html_data
)){
5875 html_output_raw_tag(hd
->html_data
, "dl");
5879 * Set indention level for definition terms and definitions...
5881 hd
->x
= html_indent(hd
->html_data
, 0, HTML_ID_GET
);
5886 else if(cmd
== GF_EOD
){
5887 if(PASS_HTML(hd
->html_data
)){
5888 html_output_string(hd
->html_data
, "</dl>");
5891 html_indent(hd
->html_data
, (int) hd
->x
, HTML_ID_SET
);
5892 html_blank(hd
->html_data
, 1);
5896 return(1); /* get linked */
5901 * HTML <DT> (Definition Term) element handler
5904 html_dt(HANDLER_S
*hd
, int ch
, int cmd
)
5906 if(PASS_HTML(hd
->html_data
)){
5908 html_handoff(hd
, ch
);
5910 else if(cmd
== GF_RESET
){
5911 html_output_raw_tag(hd
->html_data
, "dt");
5913 else if(cmd
== GF_EOD
){
5914 html_output_string(hd
->html_data
, "</dt>");
5917 return(1); /* get linked */
5920 if(cmd
== GF_RESET
){
5924 * There better be a Definition Handler installed
5925 * or else we crap out...
5927 for(p
= HANDLERS(hd
->html_data
); p
&& EL(p
)->handler
!= html_dl
; p
= p
->below
)
5930 if(p
){ /* adjust indent level if needed */
5931 html_indent(hd
->html_data
, (int) p
->y
, HTML_ID_SET
);
5932 html_blank(hd
->html_data
, 1);
5934 /* BUG: else should really bitch about this */
5937 return(0); /* DON'T get linked */
5942 * HTML <DD> (Definition Definition) element handler
5945 html_dd(HANDLER_S
*hd
, int ch
, int cmd
)
5947 if(PASS_HTML(hd
->html_data
)){
5949 html_handoff(hd
, ch
);
5951 else if(cmd
== GF_RESET
){
5952 html_output_raw_tag(hd
->html_data
, "dd");
5954 else if(cmd
== GF_EOD
){
5955 html_output_string(hd
->html_data
, "</dd>");
5958 return(1); /* get linked */
5961 if(cmd
== GF_RESET
){
5965 * There better be a Definition Handler installed
5966 * or else we crap out...
5968 for(p
= HANDLERS(hd
->html_data
); p
&& EL(p
)->handler
!= html_dl
; p
= p
->below
)
5971 if(p
){ /* adjust indent level if needed */
5972 html_indent(hd
->html_data
, (int) p
->z
, HTML_ID_SET
);
5973 html_blank(hd
->html_data
, 0);
5975 /* BUG: should really bitch about this */
5978 return(0); /* DON'T get linked */
5983 * HTML <H1> (Headings 1) element handler.
5985 * Bold, very-large font, CENTERED. One or two blank lines
5986 * above and below. For our silly character cell's that
5987 * means centered and ALL CAPS...
5990 html_h1(HANDLER_S
*hd
, int ch
, int cmd
)
5993 html_handoff(hd
, ch
);
5995 else if(cmd
== GF_RESET
){
5996 if(PASS_HTML(hd
->html_data
)){
5997 html_output_raw_tag(hd
->html_data
, "h1");
6000 /* turn ON the centered bit */
6001 CENTER_BIT(hd
->html_data
) = 1;
6004 else if(cmd
== GF_EOD
){
6005 if(PASS_HTML(hd
->html_data
)){
6006 html_output_string(hd
->html_data
, "</h1>");
6009 /* turn OFF the centered bit, add blank line */
6010 CENTER_BIT(hd
->html_data
) = 0;
6011 html_blank(hd
->html_data
, 1);
6015 return(1); /* get linked */
6020 * HTML <H2> (Headings 2) element handler
6023 html_h2(HANDLER_S
*hd
, int ch
, int cmd
)
6026 if(PASS_HTML(hd
->html_data
)){
6027 html_handoff(hd
, ch
);
6030 if((hd
->x
& HTML_HX_ULINE
) && !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
6031 HTML_ULINE(hd
->html_data
, 1);
6032 hd
->x
^= HTML_HX_ULINE
; /* only once! */
6035 html_handoff(hd
, (ch
< 128 && islower((unsigned char) ch
))
6036 ? toupper((unsigned char) ch
) : ch
);
6039 else if(cmd
== GF_RESET
){
6040 if(PASS_HTML(hd
->html_data
)){
6041 html_output_raw_tag(hd
->html_data
, "h2");
6045 * Bold, large font, flush-left. One or two blank lines
6048 if(CENTER_BIT(hd
->html_data
)) /* stop centering for now */
6049 hd
->x
= HTML_HX_CENTER
;
6053 hd
->x
|= HTML_HX_ULINE
;
6055 CENTER_BIT(hd
->html_data
) = 0;
6056 hd
->y
= html_indent(hd
->html_data
, 0, HTML_ID_SET
);
6057 hd
->z
= HD(hd
->html_data
)->wrapcol
;
6058 HD(hd
->html_data
)->wrapcol
= WRAP_COLS(hd
->html_data
) - 8;
6059 html_blank(hd
->html_data
, 1);
6062 else if(cmd
== GF_EOD
){
6063 if(PASS_HTML(hd
->html_data
)){
6064 html_output_string(hd
->html_data
, "</h2>");
6068 * restore previous centering, and indent level
6070 if(!(hd
->x
& HTML_HX_ULINE
))
6071 HTML_ULINE(hd
->html_data
, 0);
6073 html_indent(hd
->html_data
, hd
->y
, HTML_ID_SET
);
6074 html_blank(hd
->html_data
, 1);
6075 CENTER_BIT(hd
->html_data
) = (hd
->x
& HTML_HX_CENTER
) != 0;
6076 HD(hd
->html_data
)->wrapcol
= hd
->z
;
6080 return(1); /* get linked */
6085 * HTML <H3> (Headings 3) element handler
6088 html_h3(HANDLER_S
*hd
, int ch
, int cmd
)
6091 if(!PASS_HTML(hd
->html_data
)){
6092 if((hd
->x
& HTML_HX_ULINE
) && !ASCII_ISSPACE((unsigned char) (ch
& 0xff))){
6093 HTML_ULINE(hd
->html_data
, 1);
6094 hd
->x
^= HTML_HX_ULINE
; /* only once! */
6098 html_handoff(hd
, ch
);
6100 else if(cmd
== GF_RESET
){
6101 if(PASS_HTML(hd
->html_data
)){
6102 html_output_raw_tag(hd
->html_data
, "h3");
6106 * Italic, large font, slightly indented from the left
6107 * margin. One or two blank lines above and below.
6109 if(CENTER_BIT(hd
->html_data
)) /* stop centering for now */
6110 hd
->x
= HTML_HX_CENTER
;
6114 hd
->x
|= HTML_HX_ULINE
;
6115 CENTER_BIT(hd
->html_data
) = 0;
6116 hd
->y
= html_indent(hd
->html_data
, 2, HTML_ID_SET
);
6117 hd
->z
= HD(hd
->html_data
)->wrapcol
;
6118 HD(hd
->html_data
)->wrapcol
= WRAP_COLS(hd
->html_data
) - 8;
6119 html_blank(hd
->html_data
, 1);
6122 else if(cmd
== GF_EOD
){
6123 if(PASS_HTML(hd
->html_data
)){
6124 html_output_string(hd
->html_data
, "</h3>");
6128 * restore previous centering, and indent level
6130 if(!(hd
->x
& HTML_HX_ULINE
))
6131 HTML_ULINE(hd
->html_data
, 0);
6133 html_indent(hd
->html_data
, hd
->y
, HTML_ID_SET
);
6134 html_blank(hd
->html_data
, 1);
6135 CENTER_BIT(hd
->html_data
) = (hd
->x
& HTML_HX_CENTER
) != 0;
6136 HD(hd
->html_data
)->wrapcol
= hd
->z
;
6140 return(1); /* get linked */
6145 * HTML <H4> (Headings 4) element handler
6148 html_h4(HANDLER_S
*hd
, int ch
, int cmd
)
6151 html_handoff(hd
, ch
);
6153 else if(cmd
== GF_RESET
){
6154 if(PASS_HTML(hd
->html_data
)){
6155 html_output_raw_tag(hd
->html_data
, "h4");
6159 * Bold, normal font, indented more than H3. One blank line
6162 hd
->x
= CENTER_BIT(hd
->html_data
); /* stop centering for now */
6163 CENTER_BIT(hd
->html_data
) = 0;
6164 hd
->y
= html_indent(hd
->html_data
, 4, HTML_ID_SET
);
6165 hd
->z
= HD(hd
->html_data
)->wrapcol
;
6166 HD(hd
->html_data
)->wrapcol
= WRAP_COLS(hd
->html_data
) - 8;
6167 html_blank(hd
->html_data
, 1);
6170 else if(cmd
== GF_EOD
){
6171 if(PASS_HTML(hd
->html_data
)){
6172 html_output_string(hd
->html_data
, "</h4>");
6176 * restore previous centering, and indent level
6178 html_indent(hd
->html_data
, (int) hd
->y
, HTML_ID_SET
);
6179 html_blank(hd
->html_data
, 1);
6180 CENTER_BIT(hd
->html_data
) = hd
->x
;
6181 HD(hd
->html_data
)->wrapcol
= hd
->z
;
6185 return(1); /* get linked */
6190 * HTML <H5> (Headings 5) element handler
6193 html_h5(HANDLER_S
*hd
, int ch
, int cmd
)
6196 html_handoff(hd
, ch
);
6198 else if(cmd
== GF_RESET
){
6199 if(PASS_HTML(hd
->html_data
)){
6200 html_output_raw_tag(hd
->html_data
, "h5");
6204 * Italic, normal font, indented as H4. One blank line
6207 hd
->x
= CENTER_BIT(hd
->html_data
); /* stop centering for now */
6208 CENTER_BIT(hd
->html_data
) = 0;
6209 hd
->y
= html_indent(hd
->html_data
, 6, HTML_ID_SET
);
6210 hd
->z
= HD(hd
->html_data
)->wrapcol
;
6211 HD(hd
->html_data
)->wrapcol
= WRAP_COLS(hd
->html_data
) - 8;
6212 html_blank(hd
->html_data
, 1);
6215 else if(cmd
== GF_EOD
){
6216 if(PASS_HTML(hd
->html_data
)){
6217 html_output_string(hd
->html_data
, "</h5>");
6221 * restore previous centering, and indent level
6223 html_indent(hd
->html_data
, (int) hd
->y
, HTML_ID_SET
);
6224 html_blank(hd
->html_data
, 1);
6225 CENTER_BIT(hd
->html_data
) = hd
->x
;
6226 HD(hd
->html_data
)->wrapcol
= hd
->z
;
6230 return(1); /* get linked */
6235 * HTML <H6> (Headings 6) element handler
6238 html_h6(HANDLER_S
*hd
, int ch
, int cmd
)
6241 html_handoff(hd
, ch
);
6243 else if(cmd
== GF_RESET
){
6244 if(PASS_HTML(hd
->html_data
)){
6245 html_output_raw_tag(hd
->html_data
, "h6");
6249 * Bold, indented same as normal text, more than H5. One
6252 hd
->x
= CENTER_BIT(hd
->html_data
); /* stop centering for now */
6253 CENTER_BIT(hd
->html_data
) = 0;
6254 hd
->y
= html_indent(hd
->html_data
, 8, HTML_ID_SET
);
6255 hd
->z
= HD(hd
->html_data
)->wrapcol
;
6256 HD(hd
->html_data
)->wrapcol
= WRAP_COLS(hd
->html_data
) - 8;
6257 html_blank(hd
->html_data
, 1);
6260 else if(cmd
== GF_EOD
){
6261 if(PASS_HTML(hd
->html_data
)){
6262 html_output_string(hd
->html_data
, "</h6>");
6266 * restore previous centering, and indent level
6268 html_indent(hd
->html_data
, (int) hd
->y
, HTML_ID_SET
);
6269 html_blank(hd
->html_data
, 1);
6270 CENTER_BIT(hd
->html_data
) = hd
->x
;
6271 HD(hd
->html_data
)->wrapcol
= hd
->z
;
6275 return(1); /* get linked */
6280 * HTML <BlockQuote> element handler
6283 html_blockquote(HANDLER_S
*hd
, int ch
, int cmd
)
6286 #define HTML_BQ_INDENT 6
6289 html_handoff(hd
, ch
);
6291 else if(cmd
== GF_RESET
){
6292 if(PASS_HTML(hd
->html_data
)){
6293 html_output_raw_tag(hd
->html_data
, "blockquote");
6297 * A typical rendering might be a slight extra left and
6298 * right indent, and/or italic font. The Blockquote element
6299 * causes a paragraph break, and typically provides space
6300 * above and below the quote.
6302 html_indent(hd
->html_data
, HTML_BQ_INDENT
, HTML_ID_INC
);
6303 j
= HD(hd
->html_data
)->wrapstate
;
6304 HD(hd
->html_data
)->wrapstate
= 0;
6305 html_blank(hd
->html_data
, 1);
6306 HD(hd
->html_data
)->wrapstate
= j
;
6307 HD(hd
->html_data
)->wrapcol
-= HTML_BQ_INDENT
;
6310 else if(cmd
== GF_EOD
){
6311 if(PASS_HTML(hd
->html_data
)){
6312 html_output_string(hd
->html_data
, "</blockquote>");
6315 html_blank(hd
->html_data
, 1);
6317 j
= HD(hd
->html_data
)->wrapstate
;
6318 HD(hd
->html_data
)->wrapstate
= 0;
6319 html_indent(hd
->html_data
, -(HTML_BQ_INDENT
), HTML_ID_INC
);
6320 HD(hd
->html_data
)->wrapstate
= j
;
6321 HD(hd
->html_data
)->wrapcol
+= HTML_BQ_INDENT
;
6325 return(1); /* get linked */
6330 * HTML <Address> element handler
6333 html_address(HANDLER_S
*hd
, int ch
, int cmd
)
6336 #define HTML_ADD_INDENT 2
6339 html_handoff(hd
, ch
);
6341 else if(cmd
== GF_RESET
){
6342 if(PASS_HTML(hd
->html_data
)){
6343 html_output_raw_tag(hd
->html_data
, "address");
6347 * A typical rendering might be a slight extra left and
6348 * right indent, and/or italic font. The Blockquote element
6349 * causes a paragraph break, and typically provides space
6350 * above and below the quote.
6352 html_indent(hd
->html_data
, HTML_ADD_INDENT
, HTML_ID_INC
);
6353 j
= HD(hd
->html_data
)->wrapstate
;
6354 HD(hd
->html_data
)->wrapstate
= 0;
6355 html_blank(hd
->html_data
, 1);
6356 HD(hd
->html_data
)->wrapstate
= j
;
6359 else if(cmd
== GF_EOD
){
6360 if(PASS_HTML(hd
->html_data
)){
6361 html_output_string(hd
->html_data
, "</address>");
6364 html_blank(hd
->html_data
, 1);
6366 j
= HD(hd
->html_data
)->wrapstate
;
6367 HD(hd
->html_data
)->wrapstate
= 0;
6368 html_indent(hd
->html_data
, -(HTML_ADD_INDENT
), HTML_ID_INC
);
6369 HD(hd
->html_data
)->wrapstate
= j
;
6373 return(1); /* get linked */
6378 * HTML <PRE> (Preformatted Text) element handler
6381 html_pre(HANDLER_S
*hd
, int ch
, int cmd
)
6385 * remove CRLF after '>' in element.
6386 * We see CRLF because wrapstate is off.
6395 html_handoff(hd
, '\015');
6406 /* passing tags? replace CRLF with <BR> to make
6407 * sure hard newline survives in the end...
6409 if(PASS_HTML(hd
->html_data
))
6410 hd
->y
= 4; /* keep looking for CRLF */
6412 hd
->y
= 0; /* stop looking */
6427 html_output_string(hd
->html_data
, "<br />");
6431 html_handoff(hd
, '\015'); /* not CRLF, pass raw CR */
6435 default : /* zero case */
6439 html_handoff(hd
, ch
);
6441 else if(cmd
== GF_RESET
){
6443 if(PASS_HTML(hd
->html_data
)){
6444 html_output_raw_tag(hd
->html_data
, "pre");
6448 hd
->html_data
->f1
= DFL
; \
6450 html_blank(hd
->html_data
, 1);
6451 hd
->x
= HD(hd
->html_data
)->wrapstate
;
6452 HD(hd
->html_data
)->wrapstate
= 0;
6455 else if(cmd
== GF_EOD
){
6456 if(PASS_HTML(hd
->html_data
)){
6457 html_output_string(hd
->html_data
, "</pre>");
6460 HD(hd
->html_data
)->wrapstate
= (hd
->x
!= 0);
6461 html_blank(hd
->html_data
, 0);
6470 * HTML <CENTER> (Centered Text) element handler
6473 html_center(HANDLER_S
*hd
, int ch
, int cmd
)
6476 html_handoff(hd
, ch
);
6478 else if(cmd
== GF_RESET
){
6479 if(PASS_HTML(hd
->html_data
)){
6480 html_output_raw_tag(hd
->html_data
, "center");
6483 /* turn ON the centered bit */
6484 CENTER_BIT(hd
->html_data
) = 1;
6487 else if(cmd
== GF_EOD
){
6488 if(PASS_HTML(hd
->html_data
)){
6489 html_output_string(hd
->html_data
, "</center>");
6492 /* turn OFF the centered bit */
6493 CENTER_BIT(hd
->html_data
) = 0;
6502 * HTML <DIV> (Document Divisions) element handler
6505 html_div(HANDLER_S
*hd
, int ch
, int cmd
)
6508 html_handoff(hd
, ch
);
6510 else if(cmd
== GF_RESET
){
6511 if(PASS_HTML(hd
->html_data
)){
6512 html_output_raw_tag(hd
->html_data
, "div");
6517 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
6520 if(!strucmp(p
->attribute
, "ALIGN")){
6522 /* remember previous values */
6523 hd
->x
= CENTER_BIT(hd
->html_data
);
6524 hd
->y
= html_indent(hd
->html_data
, 0, HTML_ID_GET
);
6526 html_blank(hd
->html_data
, 0);
6527 CENTER_BIT(hd
->html_data
) = !strucmp(p
->value
, "CENTER");
6528 html_indent(hd
->html_data
, 0, HTML_ID_SET
);
6529 /* NOTE: "RIGHT" not supported yet */
6534 else if(cmd
== GF_EOD
){
6535 if(PASS_HTML(hd
->html_data
)){
6536 html_output_string(hd
->html_data
, "</div>");
6539 /* restore centered bit and indentiousness */
6540 CENTER_BIT(hd
->html_data
) = hd
->y
;
6541 html_indent(hd
->html_data
, hd
->y
, HTML_ID_SET
);
6542 html_blank(hd
->html_data
, 0);
6551 * HTML <SPAN> (Text Span) element handler
6554 html_span(HANDLER_S
*hd
, int ch
, int cmd
)
6556 if(PASS_HTML(hd
->html_data
)){
6558 html_handoff(hd
, ch
);
6560 else if(cmd
== GF_RESET
){
6561 html_output_raw_tag(hd
->html_data
, "span");
6563 else if(cmd
== GF_EOD
){
6564 html_output_string(hd
->html_data
, "</span>");
6575 * HTML <KBD> (Text Kbd) element handler
6578 html_kbd(HANDLER_S
*hd
, int ch
, int cmd
)
6580 if(PASS_HTML(hd
->html_data
)){
6582 html_handoff(hd
, ch
);
6584 else if(cmd
== GF_RESET
){
6585 html_output_raw_tag(hd
->html_data
, "kbd");
6587 else if(cmd
== GF_EOD
){
6588 html_output_string(hd
->html_data
, "</kbd>");
6599 * HTML <DFN> (Text Definition) element handler
6602 html_dfn(HANDLER_S
*hd
, int ch
, int cmd
)
6604 if(PASS_HTML(hd
->html_data
)){
6606 html_handoff(hd
, ch
);
6608 else if(cmd
== GF_RESET
){
6609 html_output_raw_tag(hd
->html_data
, "dfn");
6611 else if(cmd
== GF_EOD
){
6612 html_output_string(hd
->html_data
, "</dfn>");
6623 * HTML <TT> (Text Tt) element handler
6626 html_tt(HANDLER_S
*hd
, int ch
, int cmd
)
6628 if(PASS_HTML(hd
->html_data
)){
6630 html_handoff(hd
, ch
);
6632 else if(cmd
== GF_RESET
){
6633 html_output_raw_tag(hd
->html_data
, "tt");
6635 else if(cmd
== GF_EOD
){
6636 html_output_string(hd
->html_data
, "</tt>");
6647 * HTML <VAR> (Text Var) element handler
6650 html_var(HANDLER_S
*hd
, int ch
, int cmd
)
6652 if(PASS_HTML(hd
->html_data
)){
6654 html_handoff(hd
, ch
);
6656 else if(cmd
== GF_RESET
){
6657 html_output_raw_tag(hd
->html_data
, "var");
6659 else if(cmd
== GF_EOD
){
6660 html_output_string(hd
->html_data
, "</var>");
6671 * HTML <SAMP> (Text Samp) element handler
6674 html_samp(HANDLER_S
*hd
, int ch
, int cmd
)
6676 if(PASS_HTML(hd
->html_data
)){
6678 html_handoff(hd
, ch
);
6680 else if(cmd
== GF_RESET
){
6681 html_output_raw_tag(hd
->html_data
, "samp");
6683 else if(cmd
== GF_EOD
){
6684 html_output_string(hd
->html_data
, "</samp>");
6695 * HTML <SUP> (Text Superscript) element handler
6698 html_sup(HANDLER_S
*hd
, int ch
, int cmd
)
6700 if(PASS_HTML(hd
->html_data
)){
6702 html_handoff(hd
, ch
);
6704 else if(cmd
== GF_RESET
){
6705 html_output_raw_tag(hd
->html_data
, "sup");
6707 else if(cmd
== GF_EOD
){
6708 html_output_string(hd
->html_data
, "</sup>");
6719 * HTML <SUB> (Text Subscript) element handler
6722 html_sub(HANDLER_S
*hd
, int ch
, int cmd
)
6724 if(PASS_HTML(hd
->html_data
)){
6726 html_handoff(hd
, ch
);
6728 else if(cmd
== GF_RESET
){
6729 html_output_raw_tag(hd
->html_data
, "sub");
6731 else if(cmd
== GF_EOD
){
6732 html_output_string(hd
->html_data
, "</sub>");
6743 * HTML <CITE> (Text Citation) element handler
6746 html_cite(HANDLER_S
*hd
, int ch
, int cmd
)
6748 if(PASS_HTML(hd
->html_data
)){
6750 html_handoff(hd
, ch
);
6752 else if(cmd
== GF_RESET
){
6753 html_output_raw_tag(hd
->html_data
, "cite");
6755 else if(cmd
== GF_EOD
){
6756 html_output_string(hd
->html_data
, "</cite>");
6767 * HTML <CODE> (Text Code) element handler
6770 html_code(HANDLER_S
*hd
, int ch
, int cmd
)
6772 if(PASS_HTML(hd
->html_data
)){
6774 html_handoff(hd
, ch
);
6776 else if(cmd
== GF_RESET
){
6777 html_output_raw_tag(hd
->html_data
, "code");
6779 else if(cmd
== GF_EOD
){
6780 html_output_string(hd
->html_data
, "</code>");
6791 * HTML <INS> (Text Inserted) element handler
6794 html_ins(HANDLER_S
*hd
, int ch
, int cmd
)
6796 if(PASS_HTML(hd
->html_data
)){
6798 html_handoff(hd
, ch
);
6800 else if(cmd
== GF_RESET
){
6801 html_output_raw_tag(hd
->html_data
, "ins");
6803 else if(cmd
== GF_EOD
){
6804 html_output_string(hd
->html_data
, "</ins>");
6815 * HTML <DEL> (Text Deleted) element handler
6818 html_del(HANDLER_S
*hd
, int ch
, int cmd
)
6820 if(PASS_HTML(hd
->html_data
)){
6822 html_handoff(hd
, ch
);
6824 else if(cmd
== GF_RESET
){
6825 html_output_raw_tag(hd
->html_data
, "del");
6827 else if(cmd
== GF_EOD
){
6828 html_output_string(hd
->html_data
, "</del>");
6839 * HTML <ABBR> (Text Abbreviation) element handler
6842 html_abbr(HANDLER_S
*hd
, int ch
, int cmd
)
6844 if(PASS_HTML(hd
->html_data
)){
6846 html_handoff(hd
, ch
);
6848 else if(cmd
== GF_RESET
){
6849 html_output_raw_tag(hd
->html_data
, "abbr");
6851 else if(cmd
== GF_EOD
){
6852 html_output_string(hd
->html_data
, "</abbr>");
6863 * HTML <SCRIPT> element handler
6866 html_script(HANDLER_S
*hd
, int ch
, int cmd
)
6868 /* Link in and drop everything within on the floor */
6874 * HTML <APPLET> element handler
6877 html_applet(HANDLER_S
*hd
, int ch
, int cmd
)
6879 /* Link in and drop everything within on the floor */
6885 * HTML <STYLE> CSS element handler
6888 html_style(HANDLER_S
*hd
, int ch
, int cmd
)
6890 static STORE_S
*css_stuff
;
6892 if(PASS_HTML(hd
->html_data
)){
6894 /* collect style settings */
6895 so_writec(ch
, css_stuff
);
6897 else if(cmd
== GF_RESET
){
6899 so_give(&css_stuff
);
6901 css_stuff
= so_get(CharStar
, NULL
, EDIT_ACCESS
);
6903 else if(cmd
== GF_EOD
){
6905 * TODO: strip anything mischievous and pass on
6908 so_give(&css_stuff
);
6916 * RSS 2.0 <RSS> version
6919 rss_rss(HANDLER_S
*hd
, int ch
, int cmd
)
6921 if(cmd
== GF_RESET
){
6924 for(p
= HD(hd
->html_data
)->el_data
->attribs
;
6927 if(!strucmp(p
->attribute
, "VERSION")){
6928 if(p
->value
&& !strucmp(p
->value
,"2.0"))
6929 return(0); /* do not link in */
6932 gf_error("Incompatible RSS version");
6936 return(0); /* not linked or error means we never get here */
6943 rss_channel(HANDLER_S
*hd
, int ch
, int cmd
)
6946 html_handoff(hd
, ch
);
6948 else if(cmd
== GF_RESET
){
6951 feed
= RSS_FEED(hd
->html_data
) = fs_get(sizeof(RSS_FEED_S
));
6952 memset(feed
, 0, sizeof(RSS_FEED_S
));
6955 return(1); /* link in */
6962 rss_title(HANDLER_S
*hd
, int ch
, int cmd
)
6964 static STORE_S
*title_so
;
6969 so_writec(ch
, title_so
);
6972 else if(cmd
== GF_RESET
){
6973 if(RSS_FEED(hd
->html_data
)){
6974 /* prepare for data */
6978 title_so
= so_get(CharStar
, NULL
, EDIT_ACCESS
);
6981 else if(cmd
== GF_EOD
){
6983 RSS_FEED_S
*feed
= RSS_FEED(hd
->html_data
);
6987 if((rip
= feed
->items
) != NULL
){
6988 for(; rip
->next
; rip
= rip
->next
)
6992 fs_give((void **) &rip
->title
);
6994 rip
->title
= cpystr(rss_skip_whitespace(so_text(title_so
)));
6998 fs_give((void **) &feed
->title
);
7000 feed
->title
= cpystr(rss_skip_whitespace(so_text(title_so
)));
7008 return(1); /* link in */
7015 rss_image(HANDLER_S
*hd
, int ch
, int cmd
)
7017 static STORE_S
*img_so
;
7022 so_writec(ch
, img_so
);
7025 else if(cmd
== GF_RESET
){
7026 if(RSS_FEED(hd
->html_data
)){
7027 /* prepare to collect data */
7031 img_so
= so_get(CharStar
, NULL
, EDIT_ACCESS
);
7034 else if(cmd
== GF_EOD
){
7036 RSS_FEED_S
*feed
= RSS_FEED(hd
->html_data
);
7040 fs_give((void **) &feed
->image
);
7042 feed
->image
= cpystr(rss_skip_whitespace(so_text(img_so
)));
7049 return(1); /* link in */
7056 rss_link(HANDLER_S
*hd
, int ch
, int cmd
)
7058 static STORE_S
*link_so
;
7063 so_writec(ch
, link_so
);
7066 else if(cmd
== GF_RESET
){
7067 if(RSS_FEED(hd
->html_data
)){
7068 /* prepare to collect data */
7072 link_so
= so_get(CharStar
, NULL
, EDIT_ACCESS
);
7075 else if(cmd
== GF_EOD
){
7077 RSS_FEED_S
*feed
= RSS_FEED(hd
->html_data
);
7081 if((rip
= feed
->items
) != NULL
){
7082 for(; rip
->next
; rip
= rip
->next
)
7086 fs_give((void **) &rip
->link
);
7088 rip
->link
= cpystr(rss_skip_whitespace(so_text(link_so
)));
7092 fs_give((void **) &feed
->link
);
7094 feed
->link
= cpystr(rss_skip_whitespace(so_text(link_so
)));
7102 return(1); /* link in */
7106 * RSS 2.0 <DESCRIPTION>
7109 rss_description(HANDLER_S
*hd
, int ch
, int cmd
)
7111 static STORE_S
*desc_so
;
7116 so_writec(ch
, desc_so
);
7119 else if(cmd
== GF_RESET
){
7120 if(RSS_FEED(hd
->html_data
)){
7121 /* prepare to collect data */
7125 desc_so
= so_get(CharStar
, NULL
, EDIT_ACCESS
);
7128 else if(cmd
== GF_EOD
){
7130 RSS_FEED_S
*feed
= RSS_FEED(hd
->html_data
);
7134 if((rip
= feed
->items
) != NULL
){
7135 for(; rip
->next
; rip
= rip
->next
)
7138 if(rip
->description
)
7139 fs_give((void **) &rip
->description
);
7141 rip
->description
= cpystr(rss_skip_whitespace(so_text(desc_so
)));
7144 if(feed
->description
)
7145 fs_give((void **) &feed
->description
);
7147 feed
->description
= cpystr(rss_skip_whitespace(so_text(desc_so
)));
7155 return(1); /* link in */
7159 * RSS 2.0 <TTL> (in minutes)
7162 rss_ttl(HANDLER_S
*hd
, int ch
, int cmd
)
7164 RSS_FEED_S
*feed
= RSS_FEED(hd
->html_data
);
7167 if(isdigit((unsigned char) ch
))
7168 feed
->ttl
= ((feed
->ttl
* 10) + (ch
- '0'));
7170 else if(cmd
== GF_RESET
){
7171 /* prepare to collect data */
7174 else if(cmd
== GF_EOD
){
7177 return(1); /* link in */
7184 rss_item(HANDLER_S
*hd
, int ch
, int cmd
)
7186 /* BUG: verify no ITEM nesting? */
7187 if(cmd
== GF_RESET
){
7190 if((feed
= RSS_FEED(hd
->html_data
)) != NULL
){
7194 for(rip
= &feed
->items
; *rip
; rip
= &(*rip
)->next
)
7195 if(++n
> RSS_ITEM_LIMIT
)
7198 *rip
= fs_get(sizeof(RSS_ITEM_S
));
7199 memset(*rip
, 0, sizeof(RSS_ITEM_S
));
7203 return(0); /* don't link in */
7208 rss_skip_whitespace(char *s
)
7210 for(; *s
&& isspace((unsigned char) *s
); s
++)
7218 * return the function associated with the given element name
7221 element_properties(FILTER_S
*fd
, char *el_name
)
7223 register ELPROP_S
*el_table
= ELEMENTS(fd
);
7224 size_t len_name
= strlen(el_name
);
7226 for(; el_table
->element
; el_table
++)
7227 if(!strucmp(el_name
, el_table
->element
)
7228 || (el_table
->alternate
7229 && len_name
== el_table
->len
+ 1
7230 && el_name
[el_table
->len
] == '/'
7231 && !struncmp(el_name
, el_table
->element
, el_table
->len
)))
7239 * collect element's name and any attribute/value pairs then
7240 * dispatch to the appropriate handler.
7242 * Returns 1 : got what we wanted
7243 * 0 : we need more data
7247 html_element_collector(FILTER_S
*fd
, int ch
)
7250 if(ED(fd
)->overrun
){
7252 * If problem processing, don't bother doing anything
7253 * internally, just return such that none of what we've
7254 * digested is displayed.
7256 HTML_DEBUG_EL("too long", ED(fd
));
7257 return(1); /* Let it go, Jim */
7259 else if(ED(fd
)->mkup_decl
){
7260 if(ED(fd
)->badform
){
7261 dprint((2, "-- html error: bad form: %.*s\n",
7262 ED(fd
)->len
, ED(fd
)->buf
? ED(fd
)->buf
: "?"));
7264 * Invalid comment -- make some guesses as
7265 * to whether we should stop with this greater-than...
7267 if(ED(fd
)->buf
[0] != '-'
7269 || (ED(fd
)->buf
[1] == '-'
7270 && ED(fd
)->buf
[ED(fd
)->len
- 1] == '-'
7271 && ED(fd
)->buf
[ED(fd
)->len
- 2] == '-'))
7275 dprint((5, "-- html: OK: %.*s\n",
7276 ED(fd
)->len
, ED(fd
)->buf
? ED(fd
)->buf
: "?"));
7277 if(ED(fd
)->start_comment
== ED(fd
)->end_comment
){
7278 if(ED(fd
)->len
> 10){
7279 ED(fd
)->buf
[ED(fd
)->len
- 2] = '\0';
7280 html_element_comment(fd
, ED(fd
)->buf
+ 2);
7285 /* else keep collecting comment below */
7288 else if(ED(fd
)->proc_inst
){
7289 return(1); /* return without display... */
7291 else if(!ED(fd
)->quoted
|| ED(fd
)->badform
){
7295 * We either have the whole thing or all that we could
7296 * salvage from it. Try our best...
7299 if(HD(fd
)->bitbucket
)
7300 return(1); /* element inside chtml clause! */
7302 if(!ED(fd
)->badform
&& html_element_flush(ED(fd
)))
7303 return(1); /* return without display... */
7306 * If we ran into an empty tag or we don't know how to deal
7307 * with it, just go on, ignoring it...
7309 if(ED(fd
)->element
&& (ep
= element_properties(fd
, ED(fd
)->element
))){
7311 /* dispatch the element's handler */
7312 HTML_DEBUG_EL(ED(fd
)->end_tag
? "POP" : "PUSH", ED(fd
));
7313 if(ED(fd
)->end_tag
){
7314 html_pop(fd
, ep
); /* remove it's handler */
7317 /* if a block element, pop any open <p>'s */
7321 for(tp
= HANDLERS(fd
); tp
&& EL(tp
)->handler
== html_p
; tp
= tp
->below
){
7322 HTML_DEBUG_EL("Unclosed <P>", ED(fd
));
7323 html_pop(fd
, EL(tp
));
7328 /* enforce table nesting */
7329 if(!strucmp(ep
->element
, "tr")){
7330 if(!HANDLERS(fd
) || (strucmp(EL(HANDLERS(fd
))->element
, "table") && strucmp(EL(HANDLERS(fd
))->element
, "tbody") && strucmp(EL(HANDLERS(fd
))->element
, "thead"))){
7331 dprint((2, "-- html error: bad nesting for <TR>, GOT %s\n", (HANDLERS(fd
)) ? EL(HANDLERS(fd
))->element
: "NO-HANDLERS"));
7332 if(HANDLERS(fd
) && !strucmp(EL(HANDLERS(fd
))->element
,"tr")){
7333 dprint((2, "-- html error: bad nesting popping previous <TR>"));
7334 html_pop(fd
, EL(HANDLERS(fd
)));
7337 dprint((2, "-- html error: bad nesting pusing <TABLE>"));
7338 html_push(fd
, element_properties(fd
, "table"));
7342 else if(!strucmp(ep
->element
, "td") || !strucmp(ep
->element
, "th")){
7344 dprint((2, "-- html error: bad nesting: NO HANDLERS before <TD>"));
7345 html_push(fd
, element_properties(fd
, "table"));
7346 html_push(fd
, element_properties(fd
, "tr"));
7348 else if(strucmp(EL(HANDLERS(fd
))->element
, "tr")){
7349 dprint((2, "-- html error: bad nesting for <TD>, GOT %s\n", EL(HANDLERS(fd
))->element
));
7350 html_push(fd
, element_properties(fd
, "tr"));
7352 else if(!strucmp(EL(HANDLERS(fd
))->element
, "td")){
7353 dprint((2, "-- html error: bad nesting popping <TD>"));
7354 html_pop(fd
, EL(HANDLERS(fd
)));
7358 /* add it's handler */
7359 if(html_push(fd
, ep
)){
7361 /* remove empty element */
7368 HTML_DEBUG_EL("IGNORED", ED(fd
));
7371 else{ /* else, empty or unrecognized */
7372 HTML_DEBUG_EL("?", ED(fd
));
7375 return(1); /* all done! see, that didn't hurt */
7378 else if(ch
== '/' && ED(fd
)->element
&& ED(fd
)->len
){
7384 if(ED(fd
)->mkup_decl
){
7385 if((ch
&= 0xff) == '-'){
7388 if(ED(fd
)->start_comment
)
7389 ED(fd
)->end_comment
= 1;
7391 ED(fd
)->start_comment
= 1;
7397 if(ED(fd
)->end_comment
)
7398 ED(fd
)->start_comment
= ED(fd
)->end_comment
= 0;
7401 * no "--" after ! or non-whitespace between comments - bad
7403 if(ED(fd
)->len
< 2 || (!ED(fd
)->start_comment
7404 && !ASCII_ISSPACE((unsigned char) ch
)))
7405 ED(fd
)->badform
= 1; /* non-comment! */
7411 * Remember the comment for possible later processing, if
7412 * it gets too long, remember first and last few chars
7413 * so we know when to terminate (and throw some garbage
7414 * in between when we toss out what's between.
7416 if(ED(fd
)->len
== HTML_BUF_LEN
){
7417 ED(fd
)->buf
[2] = ED(fd
)->buf
[3] = 'X';
7418 ED(fd
)->buf
[4] = ED(fd
)->buf
[ED(fd
)->len
- 2];
7419 ED(fd
)->buf
[5] = ED(fd
)->buf
[ED(fd
)->len
- 1];
7423 ED(fd
)->buf
[(ED(fd
)->len
)++] = ch
;
7424 return(0); /* comments go in the bit bucket */
7426 else if(ED(fd
)->overrun
|| ED(fd
)->badform
){
7427 return(0); /* swallow char's until next '>' */
7429 else if(!ED(fd
)->element
&& !ED(fd
)->len
){
7430 if(ch
== '/'){ /* validate leading chars */
7431 ED(fd
)->end_tag
= 1;
7435 ED(fd
)->mkup_decl
= 1;
7439 ED(fd
)->proc_inst
= 1;
7442 else if(!isalpha((unsigned char) ch
))
7443 return(-1); /* can't be a tag! */
7445 else if(ch
== '\"' || ch
== '\''){
7446 if(!ED(fd
)->hit_equal
){
7447 ED(fd
)->badform
= 1; /* quote in element name?!? */
7452 if(ED(fd
)->quoted
== (char) ch
){
7453 /* end of a quoted value */
7455 if(ED(fd
)->len
&& html_element_flush(ED(fd
)))
7456 ED(fd
)->badform
= 1;
7458 return(0); /* continue collecting chars */
7460 /* ELSE fall thru writing other quoting char */
7463 ED(fd
)->quoted
= (char) ch
;
7464 ED(fd
)->was_quoted
= 1;
7465 return(0); /* need more data */
7468 else if (ASCII_ISSPACE((unsigned char) ch
))
7469 ED(fd
)->unquoted_data
= 0;
7470 else if (ED(fd
)->hit_equal
)
7471 ED(fd
)->unquoted_data
= 1;
7473 ch
&= 0xff; /* strip any "literal" high bits */
7475 || ED(fd
)->unquoted_data
7477 || strchr("#-.!", ch
)){
7478 if(ED(fd
)->len
< ((ED(fd
)->element
|| !ED(fd
)->hit_equal
)
7479 ? HTML_BUF_LEN
:MAX_ELEMENT
)){
7480 ED(fd
)->buf
[(ED(fd
)->len
)++] = ch
;
7483 ED(fd
)->overrun
= 1; /* flag it broken */
7485 else if(ASCII_ISSPACE((unsigned char) ch
) || ch
== '='){
7486 if((ED(fd
)->len
|| ED(fd
)->was_quoted
) && html_element_flush(ED(fd
))){
7487 ED(fd
)->badform
= 1;
7488 return(0); /* else, we ain't done yet */
7491 if(!ED(fd
)->hit_equal
)
7492 ED(fd
)->hit_equal
= (ch
== '=');
7494 else if(ch
== '/' && ED(fd
)->len
&& !ED(fd
)->element
){
7496 ep
= element_properties(fd
, ED(fd
)->buf
);
7499 ED(fd
)->badform
= 1;
7501 if(ED(fd
)->len
< ((ED(fd
)->element
|| !ED(fd
)->hit_equal
)
7502 ? HTML_BUF_LEN
:MAX_ELEMENT
)){
7503 ED(fd
)->buf
[(ED(fd
)->len
)++] = ch
; /* add this exception */
7506 ED(fd
)->overrun
= 1;
7510 ED(fd
)->badform
= 1;
7513 ED(fd
)->badform
= 1; /* unrecognized data?? */
7515 return(0); /* keep collecting */
7520 * Element collector found complete string, integrate it and reset
7521 * internal collection buffer.
7523 * Returns zero if element collection buffer flushed, error flag otherwise
7526 html_element_flush(CLCTR_S
*el_data
)
7530 if(el_data
->hit_equal
){ /* adding a value */
7531 el_data
->hit_equal
= 0;
7532 if(el_data
->cur_attrib
){
7533 if(!el_data
->cur_attrib
->value
){
7534 el_data
->cur_attrib
->value
= cpystr(el_data
->len
7535 ? el_data
->buf
: "");
7538 dprint((2, "** element: unexpected value: %.10s...\n",
7539 (el_data
->len
&& el_data
->buf
) ? el_data
->buf
: "\"\""));
7544 dprint((2, "** element: missing attribute name: %.10s...\n",
7545 (el_data
->len
&& el_data
->buf
) ? el_data
->buf
: "\"\""));
7549 else if(el_data
->len
){
7550 if(!el_data
->element
){
7551 el_data
->element
= cpystr(el_data
->buf
);
7554 PARAMETER
*p
= (PARAMETER
*)fs_get(sizeof(PARAMETER
));
7555 memset(p
, 0, sizeof(PARAMETER
));
7556 if(el_data
->attribs
){
7557 el_data
->cur_attrib
->next
= p
;
7558 el_data
->cur_attrib
= p
;
7561 el_data
->attribs
= el_data
->cur_attrib
= p
;
7563 p
->attribute
= cpystr(el_data
->buf
);
7568 el_data
->was_quoted
= 0; /* reset collector buf and state */
7570 memset(el_data
->buf
, 0, HTML_BUF_LEN
);
7571 return(rv
); /* report whatever happened above */
7576 * html_element_comment - "Special" comment handling here
7579 html_element_comment(FILTER_S
*f
, char *s
)
7583 while(*s
&& ASCII_ISSPACE((unsigned char) *s
))
7587 * WARNING: "!--chtml" denotes "Conditional HTML", a UW-ism.
7589 if(!struncmp(s
, "chtml ", 6)){
7591 if(!struncmp(s
, "if ", 3)){
7592 HD(f
)->bitbucket
= 1; /* default is failure! */
7596 if(!struncmp(s
+ 1, "inemode=", 8)){
7597 if(!strucmp(s
= removing_quotes(s
+ 9), "function_key")
7598 && F_ON(F_USE_FK
, ps_global
))
7599 HD(f
)->bitbucket
= 0;
7600 else if(!strucmp(s
, "running"))
7601 HD(f
)->bitbucket
= 0;
7603 else if(!strucmp(s
, "os_windows"))
7604 HD(f
)->bitbucket
= 0;
7610 case '[' : /* test */
7611 if((p
= strindex(++s
, ']')) != NULL
){
7612 *p
= '\0'; /* tie off test string */
7613 removing_leading_white_space(s
);
7614 removing_trailing_white_space(s
);
7615 if(*s
== '-' && *(s
+1) == 'r'){ /* readable file? */
7616 for(s
+= 2; *s
&& ASCII_ISSPACE((unsigned char) *s
); s
++)
7620 HD(f
)->bitbucket
= (can_access(CHTML_VAR_EXPAND(removing_quotes(s
)),
7631 else if(!strucmp(s
, "else")){
7632 HD(f
)->bitbucket
= !HD(f
)->bitbucket
;
7634 else if(!strucmp(s
, "endif")){
7635 /* Clean up after chtml here */
7636 HD(f
)->bitbucket
= 0;
7639 else if(!HD(f
)->bitbucket
){
7640 if(!struncmp(s
, "#include ", 9)){
7641 char buf
[MAILTMPLEN
], *bufp
;
7642 int len
, end_of_line
;
7645 /* Include the named file */
7646 if(!struncmp(s
+= 9, "file=", 5)
7647 && (fp
= our_fopen(CHTML_VAR_EXPAND(removing_quotes(s
+5)), "r"))){
7648 html_element_output(f
, HTML_NEWLINE
);
7650 while(fgets(buf
, sizeof(buf
), fp
)){
7651 if((len
= strlen(buf
)) && buf
[len
-1] == '\n'){
7658 for(bufp
= buf
; len
; bufp
++, len
--)
7659 html_element_output(f
, (int) *bufp
);
7662 html_element_output(f
, HTML_NEWLINE
);
7666 html_element_output(f
, HTML_NEWLINE
);
7672 else if(!struncmp(s
, "#echo ", 6)){
7673 if(!struncmp(s
+= 6, "var=", 4)){
7674 char *p
, buf
[MAILTMPLEN
];
7676 extern char datestamp
[];
7678 if(!strcmp(s
= removing_quotes(s
+ 4), "ALPINE_VERSION")){
7681 else if(!strcmp(s
, "ALPINE_REVISION")){
7682 p
= get_alpine_revision_string(buf
, sizeof(buf
));
7684 else if(!strcmp(s
, "C_CLIENT_VERSION")){
7687 else if(!strcmp(s
, "ALPINE_COMPILE_DATE")){
7690 else if(!strcmp(s
, "ALPINE_TODAYS_DATE")){
7691 rfc822_date(p
= buf
);
7693 else if(!strcmp(s
, "_LOCAL_FULLNAME_")){
7694 p
= (ps_global
->VAR_LOCAL_FULLNAME
7695 && ps_global
->VAR_LOCAL_FULLNAME
[0])
7696 ? ps_global
->VAR_LOCAL_FULLNAME
7699 else if(!strcmp(s
, "_LOCAL_ADDRESS_")){
7700 p
= (ps_global
->VAR_LOCAL_ADDRESS
7701 && ps_global
->VAR_LOCAL_ADDRESS
[0])
7702 ? ps_global
->VAR_LOCAL_ADDRESS
7704 adr
= rfc822_parse_mailbox(&p
, ps_global
->maildomain
);
7705 snprintf(p
= buf
, sizeof(buf
), "%s@%s", adr
->mailbox
, adr
->host
);
7706 mail_free_address(&adr
);
7708 else if(!strcmp(s
, "_BUGS_FULLNAME_")){
7709 p
= (ps_global
->VAR_BUGS_FULLNAME
7710 && ps_global
->VAR_BUGS_FULLNAME
[0])
7711 ? ps_global
->VAR_BUGS_FULLNAME
7712 : "Place to report Alpine Bugs";
7714 else if(!strcmp(s
, "_BUGS_ADDRESS_")){
7715 p
= (ps_global
->VAR_BUGS_ADDRESS
7716 && ps_global
->VAR_BUGS_ADDRESS
[0])
7717 ? ps_global
->VAR_BUGS_ADDRESS
: "postmaster";
7718 adr
= rfc822_parse_mailbox(&p
, ps_global
->maildomain
);
7719 snprintf(p
= buf
, sizeof(buf
), "%s@%s", adr
->mailbox
, adr
->host
);
7720 mail_free_address(&adr
);
7722 else if(!strcmp(s
, "CURRENT_DIR")){
7723 getcwd(p
= buf
, sizeof(buf
));
7725 else if(!strcmp(s
, "HOME_DIR")){
7726 p
= ps_global
->home_dir
;
7728 else if(!strcmp(s
, "PINE_CONF_PATH")){
7729 #if defined(_WINDOWS) || !defined(SYSTEM_PINERC)
7730 p
= "/usr/local/lib/pine.conf";
7735 else if(!strcmp(s
, "PINE_CONF_FIXED_PATH")){
7736 #ifdef SYSTEM_PINERC_FIXED
7737 p
= SYSTEM_PINERC_FIXED
;
7739 p
= "/usr/local/lib/pine.conf.fixed";
7742 else if(!strcmp(s
, "PINE_INFO_PATH")){
7743 p
= SYSTEM_PINE_INFO_PATH
;
7745 else if(!strcmp(s
, "MAIL_SPOOL_PATH")){
7748 else if(!strcmp(s
, "MAIL_SPOOL_LOCK_PATH")){
7749 /* Don't put the leading /tmp/. */
7754 for(j
= 0, i
= 0; p
[i
] && j
< MAILTMPLEN
- 1; i
++){
7764 else if(!struncmp(s
, "VAR_", 4)){
7766 if(pith_opt_pretty_var_name
)
7767 p
= (*pith_opt_pretty_var_name
)(p
);
7769 else if(!struncmp(s
, "FEAT_", 5)){
7771 if(pith_opt_pretty_feature_name
)
7772 p
= (*pith_opt_pretty_feature_name
)(p
, -1);
7778 if(f
->f1
== WSPACE
){
7779 html_element_output(f
, ' ');
7780 f
->f1
= DFL
; /* clear it */
7784 html_element_output(f
, (int) *p
++);
7793 html_element_output(FILTER_S
*f
, int ch
)
7796 (*EL(HANDLERS(f
))->handler
)(HANDLERS(f
), ch
, GF_DATA
);
7802 * collect html entity and return its UCS value when done.
7804 * Returns HTML_MOREDATA : we need more data
7805 * HTML_ENTITY : entity collected
7806 * HTML_BADVALUE : good data, but no named match or out of range
7807 * HTML_BADDATA : invalid input
7810 * - entity format is "'&' tag ';'" and represents a literal char
7811 * - named entities are CASE SENSITIVE.
7812 * - numeric char references (where the tag is prefixed with a '#')
7813 * are a char with that numbers value
7814 * - numeric vals are 0-255 except for the ranges: 0-8, 11-31, 127-159.
7817 html_entity_collector(FILTER_S
*f
, int ch
, UCS
*ucs
, char **alt
)
7820 static char buf
[MAX_ENTITY
+2];
7823 if(len
== MAX_ENTITY
){
7827 ? (isalpha((unsigned char) ch
) || ch
== '#')
7828 : ((isdigit((unsigned char) ch
)
7829 || (len
== 1 && (unsigned char) ch
== 'x')
7830 || (len
== 1 &&(unsigned char) ch
== 'X')
7831 || (len
> 1 && isxdigit((unsigned char) ch
))
7832 || (isalpha((unsigned char) ch
) && buf
[0] != '#')))){
7834 return(HTML_MOREDATA
);
7836 else if(ch
== ';' || ASCII_ISSPACE((unsigned char) ch
)){
7837 buf
[len
] = '\0'; /* got something! */
7839 if(buf
[1] == 'x' || buf
[1] == 'X')
7840 *ucs
= (UCS
) strtoul(&buf
[2], NULL
, 16);
7842 *ucs
= (UCS
) strtoul(&buf
[1], NULL
, 10);
7846 for(i
= 0; i
< sizeof(entity_tab
)/sizeof(struct html_entities
); i
++)
7847 if(entity_tab
[i
].value
== *ucs
){
7848 *alt
= entity_tab
[i
].plain
;
7854 return(HTML_ENTITY
);
7857 rv
= HTML_BADVALUE
; /* in case of no match */
7858 for(i
= 0; i
< sizeof(entity_tab
)/sizeof(struct html_entities
); i
++)
7859 if(strcmp(entity_tab
[i
].name
, buf
) == 0){
7860 *ucs
= entity_tab
[i
].value
;
7862 *alt
= entity_tab
[i
].plain
;
7865 return(HTML_ENTITY
);
7870 rv
= HTML_BADDATA
; /* bogus input! */
7882 /*----------------------------------------------------------------------
7883 HTML text to plain text filter
7885 This basically tries to do the best it can with HTML 2.0 (RFC1866)
7886 with bits of RFC 1942 (plus some HTML 3.2 thrown in as well) text
7891 gf_html2plain(FILTER_S
*f
, int flg
)
7893 /* BUG: quote incoming \255 values (see "yuml" above!) */
7896 GF_INIT(f
, f
->next
);
7901 for(ii
= HTML_INDENT(f
); ii
> 0; ii
--)
7907 while(GF_GETC(f
, c
)){
7909 * First we have to collect any literal entities...
7910 * that is, IF we're not already collecting one
7911 * AND we're not in element's text or, if we are, we're
7912 * not in quoted text. Whew.
7918 switch(html_entity_collector(f
, c
, &ucs
, &alt
)){
7919 case HTML_MOREDATA
: /* more data required? */
7920 continue; /* go get another char */
7922 case HTML_BADVALUE
:
7924 /* if supplied, process bogus data */
7927 unsigned int uic
= *alt
;
7931 if(c
== '&' && !HD(f
)->quoted
){
7936 f
->t
= 0; /* don't come back next time */
7940 default : /* thing to process */
7941 f
->t
= 0; /* don't come back */
7944 * do something with UCS codepoint. If it's
7945 * not displayable then use the alt version
7947 * cvt UCS to UTF-8 and toss into next filter.
7949 if(ucs
> 127 && wcellwidth(ucs
) < 0){
7952 c
= MAKE_LITERAL(*alt
);
7959 c
= MAKE_LITERAL('?');
7962 unsigned char utf8buf
[8], *p1
, *p2
;
7964 p2
= utf8_put(p1
= (unsigned char *) utf8buf
, (unsigned long) ucs
);
7965 for(; p1
< p2
; p1
++){
7966 c
= MAKE_LITERAL(*p1
);
7976 else if(!PASS_HTML(f
) && c
== '&' && !HD(f
)->quoted
){
7982 * then we process whatever we got...
7988 GF_OP_END(f
); /* clean up our input pointers */
7990 else if(flg
== GF_EOD
){
7992 dprint((2, "-- html error: no closing tag for %s",EL(HANDLERS(f
))->element
));
7993 html_pop(f
, EL(HANDLERS(f
)));
7996 html_output(f
, HTML_NEWLINE
);
7998 HTML_ULINE(f
, ULINE_BIT(f
) = 0);
8001 HTML_BOLD(f
, BOLD_BIT(f
) = 0);
8004 fs_give((void **)&f
->line
);
8006 free_color_pair(&HD(f
)->color
);
8010 if(((HTML_OPT_S
*)f
->opt
)->base
)
8011 fs_give((void **) &((HTML_OPT_S
*)f
->opt
)->base
);
8016 (*f
->next
->f
)(f
->next
, GF_DATA
);
8017 (*f
->next
->f
)(f
->next
, GF_EOD
);
8019 else if(flg
== GF_RESET
){
8020 dprint((9, "-- gf_reset html2plain\n"));
8021 f
->data
= (HTML_DATA_S
*) fs_get(sizeof(HTML_DATA_S
));
8022 memset(f
->data
, 0, sizeof(HTML_DATA_S
));
8023 /* start with flowing text */
8024 HD(f
)->wrapstate
= !PASS_HTML(f
);
8025 HD(f
)->wrapcol
= WRAP_COLS(f
);
8026 f
->f1
= DFL
; /* state */
8027 f
->f2
= 0; /* chars in wrap buffer */
8028 f
->n
= 0L; /* chars on line so far */
8029 f
->linep
= f
->line
= (char *)fs_get(HTML_BUF_LEN
* sizeof(char));
8030 HD(f
)->line_bufsize
= HTML_BUF_LEN
; /* initial bufsize of line */
8031 HD(f
)->alt_entity
= (!ps_global
->display_charmap
8032 || strucmp(ps_global
->display_charmap
, "iso-8859-1"));
8033 HD(f
)->cb
.cbufp
= HD(f
)->cb
.cbufend
= HD(f
)->cb
.cbuf
;
8040 * html_indent - do the requested indent level function with appropriate
8041 * flushing and such.
8043 * Returns: indent level prior to set/increment
8046 html_indent(FILTER_S
*f
, int val
, int func
)
8048 int old
= HD(f
)->indent_level
;
8050 /* flush pending data at old indent level */
8053 html_output_flush(f
);
8054 if((HD(f
)->indent_level
+= val
) < 0)
8055 HD(f
)->indent_level
= 0;
8060 html_output_flush(f
);
8061 HD(f
)->indent_level
= val
;
8074 * html_blanks - Insert n blank lines into output
8077 html_blank(FILTER_S
*f
, int n
)
8079 /* Cap off any flowing text, and then write blank lines */
8080 if(f
->f2
|| f
->n
|| CENTER_BIT(f
) || HD(f
)->centered
|| WRAPPED_LEN(f
))
8081 html_output(f
, HTML_NEWLINE
);
8083 if(HD(f
)->wrapstate
)
8084 while(HD(f
)->blanks
< n
) /* blanks inc'd by HTML_NEWLINE */
8085 html_output(f
, HTML_NEWLINE
);
8091 * html_newline -- insert a newline mindful of embedded tags
8094 html_newline(FILTER_S
*f
)
8096 html_write_newline(f
); /* commit an actual newline */
8098 if(f
->n
){ /* and keep track of blank lines */
8108 * output the given char, handling any requested wrapping.
8109 * It's understood that all whitespace handed us is written. In other
8110 * words, junk whitespace is weeded out before it's given to us here.
8114 html_output(FILTER_S
*f
, int ch
)
8118 void (*o_f
)(FILTER_S
*, int, int, int) = CENTER_BIT(f
) ? html_output_centered
: html_output_normal
;
8121 * if ch is a control token, just pass it on, else, collect
8122 * utf8-encoded characters to determine width,then feed into
8125 if(ch
== TAG_EMBED
|| HD(f
)->embedded
.state
|| (ch
> 0xff && IS_LITERAL(ch
) == 0)){
8126 (*o_f
)(f
, ch
, 1, 0);
8128 else if(utf8_to_ucs4_oneatatime(ch
& 0xff, &(HD(f
)->cb
), &uc
, &width
)){
8131 for(cp
= HD(f
)->cb
.cbuf
; cp
<= HD(f
)->cb
.cbufend
; cp
++){
8132 (*o_f
)(f
, *cp
, width
, HD(f
)->cb
.cbufend
- cp
);
8133 width
= 0; /* only count it once */
8136 HD(f
)->cb
.cbufp
= HD(f
)->cb
.cbufend
= HD(f
)->cb
.cbuf
;
8139 HD(f
)->cb
.cbufend
= HD(f
)->cb
.cbufp
;
8140 /* else do nothing until we have a full character */
8145 html_output_string(FILTER_S
*f
, char *s
)
8153 html_output_raw_tag(FILTER_S
*f
, char *tag
)
8159 html_output(f
, '<');
8160 html_output_string(f
, tag
);
8161 for(p
= HD(f
)->el_data
->attribs
;
8164 /* SECURITY: no javascript */
8165 /* PRIVACY: no img src without permission */
8166 /* BUGS: no class collisions since <head> ignored */
8167 if(html_event_attribute(p
->attribute
)
8168 || !strucmp(p
->attribute
, "class")
8169 || (!PASS_IMAGES(f
) && !strucmp(tag
, "img") && !strucmp(p
->attribute
, "src")))
8172 /* PRIVACY: sniff out background images */
8173 if(p
->value
&& !PASS_IMAGES(f
)){
8174 if(!strucmp(p
->attribute
, "style")){
8175 if((vp
= srchstr(p
->value
, "background-image")) != NULL
){
8176 /* neuter in place */
8177 vp
[11] = vp
[12] = vp
[13] = vp
[14] = vp
[15] = 'X';
8180 for(vp
= p
->value
; (vp
= srchstr(vp
, "background")) != NULL
; vp
++)
8181 if(vp
[10] == ' ' || vp
[10] == ':')
8182 for(i
= 11; vp
[i
] && vp
[i
] != ';'; i
++)
8183 if((vp
[i
] == 'u' && vp
[i
+1] == 'r' && vp
[i
+2] == 'l' && vp
[i
+3] == '(')
8184 || vp
[i
] == ':' || vp
[i
] == '/' || vp
[i
] == '.')
8188 else if(!strucmp(p
->attribute
, "background")){
8191 for(ip
= p
->value
; *ip
&& !(*ip
== ':' || *ip
== '/' || *ip
== '.'); ip
++)
8199 html_output(f
, ' ');
8200 html_output_string(f
, p
->attribute
);
8202 html_output(f
, '=');
8203 html_output(f
, '\"');
8204 html_output_string(f
, p
->value
);
8205 html_output(f
, '\"');
8209 /* append warning to form submission */
8210 if(!strucmp(tag
, "form")){
8211 html_output_string(f
, " onsubmit=\"return window.confirm('This form is submitting information to an outside server.\\nAre you sure?');\"");
8215 html_output(f
, ' ');
8216 html_output(f
, '/');
8219 html_output(f
, '>');
8224 html_event_attribute(char *attr
)
8227 static char *events
[] = {
8228 "onabort", "onblur", "onchange", "onclick", "ondblclick", "ondragdrop",
8229 "onerror", "onfocus", "onkeydown", "onkeypress", "onkeyup", "onload",
8230 "onmousedown", "onmousemove", "onmouseout", "onmouseover", "onmouseup", "onmove",
8231 "onreset", "onresize", "onselec", "onsubmit", "onunload"
8234 if((attr
[0] == 'o' || attr
[0] == 'O') && (attr
[1] == 'n' || attr
[1] == 'N'))
8235 for(i
= 0; i
< sizeof(events
)/sizeof(events
[0]); i
++)
8236 if(!strucmp(attr
, events
[i
]))
8244 html_output_normal(FILTER_S
*f
, int ch
, int width
, int remaining
)
8246 static int written
= 0;
8249 if(HD(f
)->centered
){
8250 html_centered_flush(f
);
8251 fs_give((void **) &HD(f
)->centered
->line
.buf
);
8252 fs_give((void **) &HD(f
)->centered
->word
.buf
);
8253 fs_give((void **) &HD(f
)->centered
);
8256 if(HD(f
)->wrapstate
){
8257 if(ch
== HTML_NEWLINE
){ /* hard newline */
8258 html_output_flush(f
);
8262 HD(f
)->blanks
= 0; /* reset blank line counter */
8264 if(ch
== TAG_EMBED
){ /* takes up no space */
8265 HD(f
)->embedded
.state
= -5;
8266 HTML_LINEP_PUTC(f
, TAG_EMBED
);
8268 else if(HD(f
)->embedded
.state
){ /* ditto */
8269 if(HD(f
)->embedded
.state
== -5){
8270 /* looking for specially handled tags following TAG_EMBED */
8271 if(ch
== TAG_HANDLE
)
8272 HD(f
)->embedded
.state
= -1; /* next ch is length */
8273 else if(ch
== TAG_FGCOLOR
|| ch
== TAG_BGCOLOR
){
8275 HD(f
)->color
= new_color_pair(NULL
, NULL
);
8277 if(ch
== TAG_FGCOLOR
)
8278 HD(f
)->embedded
.color
= HD(f
)->color
->fg
;
8280 HD(f
)->embedded
.color
= HD(f
)->color
->bg
;
8282 HD(f
)->embedded
.state
= RGBLEN
;
8285 HD(f
)->embedded
.state
= 0; /* non-special */
8287 else if(HD(f
)->embedded
.state
> 0){
8288 /* collecting up an RGBLEN color or length, ignore tags */
8289 (HD(f
)->embedded
.state
)--;
8290 if(HD(f
)->embedded
.color
)
8291 *HD(f
)->embedded
.color
++ = ch
;
8293 if(HD(f
)->embedded
.state
== 0 && HD(f
)->embedded
.color
){
8294 *HD(f
)->embedded
.color
= '\0';
8295 HD(f
)->embedded
.color
= NULL
;
8298 else if(HD(f
)->embedded
.state
< 0){
8299 HD(f
)->embedded
.state
= ch
; /* number of embedded chars */
8302 (HD(f
)->embedded
.state
)--;
8303 if(HD(f
)->embedded
.color
)
8304 *HD(f
)->embedded
.color
++ = ch
;
8306 if(HD(f
)->embedded
.state
== 0 && HD(f
)->embedded
.color
){
8307 *HD(f
)->embedded
.color
= '\0';
8308 HD(f
)->embedded
.color
= NULL
;
8312 HTML_LINEP_PUTC(f
, ch
);
8314 else if(HTML_ISSPACE(ch
)){
8315 html_output_flush(f
);
8324 if(f
->f2
+ cwidth
+ 1 >= WRAP_COLS(f
)){
8325 HTML_LINEP_PUTC(f
, ch
& 0xff);
8331 if(HD(f
)->in_anchor
)
8332 html_write_anchor(f
, HD(f
)->in_anchor
);
8335 HTML_LINEP_PUTC(f
, ch
& 0xff);
8349 html_output_flush(f
);
8351 switch(HD(f
)->embedded
.state
){
8356 * It's difficult to both preserve whitespace and wrap at the
8357 * same time so we'll do a dumb wrap at the edge of the screen.
8358 * Since this shouldn't come up much in real life we'll hope
8359 * it is good enough.
8361 if(!PASS_HTML(f
) && (f
->n
+ width
) > WRAP_COLS(f
))
8364 f
->n
+= width
; /* inc displayed char count */
8365 HD(f
)->blanks
= 0; /* reset blank line counter */
8366 html_putc(f
, ch
& 0xff);
8369 case TAG_EMBED
: /* takes up no space */
8370 html_putc(f
, TAG_EMBED
);
8371 HD(f
)->embedded
.state
= -2;
8374 case HTML_NEWLINE
: /* newline handling */
8388 HD(f
)->embedded
.state
= 0;
8391 HD(f
)->embedded
.state
= -1; /* next ch is length */
8412 HD(f
)->color
= new_color_pair(NULL
, NULL
);
8414 HD(f
)->embedded
.color
= HD(f
)->color
->fg
;
8415 HD(f
)->embedded
.state
= 11;
8420 HD(f
)->color
= new_color_pair(NULL
, NULL
);
8422 HD(f
)->embedded
.color
= HD(f
)->color
->bg
;
8423 HD(f
)->embedded
.state
= 11;
8426 case TAG_HANDLEOFF
:
8428 HD(f
)->in_anchor
= 0;
8439 HD(f
)->embedded
.state
= ch
; /* number of embedded chars */
8444 HD(f
)->embedded
.state
--;
8445 if(HD(f
)->embedded
.color
)
8446 *HD(f
)->embedded
.color
++ = ch
;
8448 if(HD(f
)->embedded
.state
== 0 && HD(f
)->embedded
.color
){
8449 *HD(f
)->embedded
.color
= '\0';
8450 HD(f
)->embedded
.color
= NULL
;
8461 * flush any buffered chars waiting for wrapping.
8464 html_output_flush(FILTER_S
*f
)
8467 if(f
->n
&& ((int) f
->n
) + 1 + f
->f2
> HD(f
)->wrapcol
)
8468 html_newline(f
); /* wrap? */
8470 if(f
->n
){ /* text already on the line? */
8472 f
->n
++; /* increment count */
8475 /* write at start of new line */
8476 html_write_indent(f
, HD(f
)->indent_level
);
8478 if(HD(f
)->in_anchor
)
8479 html_write_anchor(f
, HD(f
)->in_anchor
);
8490 * html_output_centered - managed writing centered text
8493 html_output_centered(FILTER_S
*f
, int ch
, int width
, int remaining
)
8498 if(!HD(f
)->centered
){ /* new text? */
8499 html_output_flush(f
);
8500 if(f
->n
) /* start on blank line */
8503 HD(f
)->centered
= (CENTER_S
*) fs_get(sizeof(CENTER_S
));
8504 memset(HD(f
)->centered
, 0, sizeof(CENTER_S
));
8505 /* and grab a buf to start collecting centered text */
8506 HD(f
)->centered
->line
.len
= WRAP_COLS(f
);
8507 HD(f
)->centered
->line
.buf
= (char *) fs_get(HD(f
)->centered
->line
.len
8509 HD(f
)->centered
->line
.used
= HD(f
)->centered
->line
.width
= 0;
8510 HD(f
)->centered
->word
.len
= 32;
8511 HD(f
)->centered
->word
.buf
= (char *) fs_get(HD(f
)->centered
->word
.len
8513 HD(f
)->centered
->word
.used
= HD(f
)->centered
->word
.width
= 0;
8516 if(ch
== HTML_NEWLINE
){ /* hard newline */
8517 html_centered_flush(f
);
8519 else if(ch
== TAG_EMBED
){ /* takes up no space */
8520 HD(f
)->embedded
.state
= -5;
8521 html_centered_putc(&HD(f
)->centered
->word
, TAG_EMBED
);
8523 else if(HD(f
)->embedded
.state
){
8524 if(HD(f
)->embedded
.state
== -5){
8525 /* looking for specially handled tags following TAG_EMBED */
8526 if(ch
== TAG_HANDLE
)
8527 HD(f
)->embedded
.state
= -1; /* next ch is length */
8528 else if(ch
== TAG_FGCOLOR
|| ch
== TAG_BGCOLOR
){
8530 HD(f
)->color
= new_color_pair(NULL
, NULL
);
8532 if(ch
== TAG_FGCOLOR
)
8533 HD(f
)->embedded
.color
= HD(f
)->color
->fg
;
8535 HD(f
)->embedded
.color
= HD(f
)->color
->bg
;
8537 HD(f
)->embedded
.state
= RGBLEN
;
8540 HD(f
)->embedded
.state
= 0; /* non-special */
8542 else if(HD(f
)->embedded
.state
> 0){
8543 /* collecting up an RGBLEN color or length, ignore tags */
8544 (HD(f
)->embedded
.state
)--;
8545 if(HD(f
)->embedded
.color
)
8546 *HD(f
)->embedded
.color
++ = ch
;
8548 if(HD(f
)->embedded
.state
== 0 && HD(f
)->embedded
.color
){
8549 *HD(f
)->embedded
.color
= '\0';
8550 HD(f
)->embedded
.color
= NULL
;
8553 else if(HD(f
)->embedded
.state
< 0){
8554 HD(f
)->embedded
.state
= ch
; /* number of embedded chars */
8557 (HD(f
)->embedded
.state
)--;
8558 if(HD(f
)->embedded
.color
)
8559 *HD(f
)->embedded
.color
++ = ch
;
8561 if(HD(f
)->embedded
.state
== 0 && HD(f
)->embedded
.color
){
8562 *HD(f
)->embedded
.color
= '\0';
8563 HD(f
)->embedded
.color
= NULL
;
8567 html_centered_putc(&HD(f
)->centered
->word
, ch
);
8569 else if(ASCII_ISSPACE((unsigned char) ch
)){
8570 if(!HD(f
)->centered
->space
++){ /* end of a word? flush! */
8573 if(WRAPPED_LEN(f
) > HD(f
)->wrapcol
){
8574 html_centered_flush_line(f
);
8575 /* fall thru to put current "word" on blank "line" */
8577 else if(HD(f
)->centered
->line
.width
){
8578 /* put space char between line and appended word */
8579 html_centered_putc(&HD(f
)->centered
->line
, ' ');
8580 HD(f
)->centered
->line
.width
++;
8583 for(i
= 0; i
< HD(f
)->centered
->word
.used
; i
++)
8584 html_centered_putc(&HD(f
)->centered
->line
,
8585 HD(f
)->centered
->word
.buf
[i
]);
8587 HD(f
)->centered
->line
.width
+= HD(f
)->centered
->word
.width
;
8588 HD(f
)->centered
->word
.used
= 0;
8589 HD(f
)->centered
->word
.width
= 0;
8596 /* ch is start of next word */
8597 HD(f
)->centered
->space
= 0;
8598 if(HD(f
)->centered
->word
.width
>= WRAP_COLS(f
))
8599 html_centered_flush(f
);
8601 html_centered_putc(&HD(f
)->centered
->word
, ch
);
8610 HD(f
)->centered
->word
.width
+= cwidth
;
8617 * html_centered_putc -- add given char to given WRAPLINE_S
8620 html_centered_putc(WRAPLINE_S
*wp
, int ch
)
8622 if(wp
->used
+ 1 >= wp
->len
){
8624 fs_resize((void **) &wp
->buf
, wp
->len
* sizeof(char));
8627 wp
->buf
[wp
->used
++] = ch
;
8633 * html_centered_flush - finish writing any pending centered output
8636 html_centered_flush(FILTER_S
*f
)
8641 * If word present (what about line?) we need to deal with
8644 if(HD(f
)->centered
->word
.width
&& WRAPPED_LEN(f
) > HD(f
)->wrapcol
)
8645 html_centered_flush_line(f
);
8648 /* figure out how much to indent */
8649 if((i
= (WRAP_COLS(f
) - WRAPPED_LEN(f
))/2) > 0)
8650 html_write_indent(f
, i
);
8652 if(HD(f
)->centered
->anchor
)
8653 html_write_anchor(f
, HD(f
)->centered
->anchor
);
8655 html_centered_handle(&HD(f
)->centered
->anchor
,
8656 HD(f
)->centered
->line
.buf
,
8657 HD(f
)->centered
->line
.used
);
8658 html_write(f
, HD(f
)->centered
->line
.buf
, HD(f
)->centered
->line
.used
);
8660 if(HD(f
)->centered
->word
.used
){
8661 if(HD(f
)->centered
->line
.width
)
8664 html_centered_handle(&HD(f
)->centered
->anchor
,
8665 HD(f
)->centered
->word
.buf
,
8666 HD(f
)->centered
->word
.used
);
8667 html_write(f
, HD(f
)->centered
->word
.buf
,
8668 HD(f
)->centered
->word
.used
);
8671 HD(f
)->centered
->line
.used
= HD(f
)->centered
->word
.used
= 0;
8672 HD(f
)->centered
->line
.width
= HD(f
)->centered
->word
.width
= 0;
8675 if(HD(f
)->centered
->word
.used
){
8676 html_write(f
, HD(f
)->centered
->word
.buf
,
8677 HD(f
)->centered
->word
.used
);
8678 HD(f
)->centered
->line
.used
= HD(f
)->centered
->word
.used
= 0;
8679 HD(f
)->centered
->line
.width
= HD(f
)->centered
->word
.width
= 0;
8681 HD(f
)->blanks
++; /* advance the blank line counter */
8684 html_newline(f
); /* finish the line */
8689 * html_centered_handle - scan the line for embedded handles
8692 html_centered_handle(int *h
, char *line
, int len
)
8697 if(*line
++ == TAG_EMBED
&& len
-- > 0)
8700 if((n
= *line
++) >= --len
){
8704 *h
= (*h
* 10) + (*line
++ - '0');
8708 case TAG_HANDLEOFF
:
8710 *h
= 0; /* assumption 23,342: inverse off ends tags */
8721 * html_centered_flush_line - flush the centered "line" only
8724 html_centered_flush_line(FILTER_S
*f
)
8726 if(HD(f
)->centered
->line
.used
){
8729 /* hide "word" from flush */
8730 i
= HD(f
)->centered
->word
.used
;
8731 j
= HD(f
)->centered
->word
.width
;
8732 HD(f
)->centered
->word
.used
= 0;
8733 HD(f
)->centered
->word
.width
= 0;
8734 html_centered_flush(f
);
8736 HD(f
)->centered
->word
.used
= i
;
8737 HD(f
)->centered
->word
.width
= j
;
8743 * html_write_indent - write indention mindful of display attributes
8746 html_write_indent(FILTER_S
*f
, int indent
)
8750 html_putc(f
, TAG_EMBED
);
8751 html_putc(f
, TAG_BOLDOFF
);
8755 html_putc(f
, TAG_EMBED
);
8756 html_putc(f
, TAG_ULINEOFF
);
8762 html_putc(f
, ' '); /* indent as needed */
8765 * Resume any previous embedded state
8769 html_putc(f
, TAG_EMBED
);
8770 html_putc(f
, TAG_BOLDON
);
8774 html_putc(f
, TAG_EMBED
);
8775 html_putc(f
, TAG_ULINEON
);
8785 html_write_anchor(FILTER_S
*f
, int anchor
)
8790 html_putc(f
, TAG_EMBED
);
8791 html_putc(f
, TAG_HANDLE
);
8792 snprintf(buf
, sizeof(buf
), "%d", anchor
);
8793 html_putc(f
, (int) strlen(buf
));
8795 for(i
= 0; buf
[i
]; i
++)
8796 html_putc(f
, buf
[i
]);
8801 * html_write_newline - write a newline mindful of display attributes
8804 html_write_newline(FILTER_S
*f
)
8808 if(! STRIP(f
)){ /* First tie, off any embedded state */
8809 if(HD(f
)->in_anchor
){
8810 html_putc(f
, TAG_EMBED
);
8811 html_putc(f
, TAG_INVOFF
);
8815 html_putc(f
, TAG_EMBED
);
8816 html_putc(f
, TAG_BOLDOFF
);
8820 html_putc(f
, TAG_EMBED
);
8821 html_putc(f
, TAG_ULINEOFF
);
8824 if(HD(f
)->color
&& (HD(f
)->color
->fg
[0] || HD(f
)->color
->bg
[0])){
8828 p
= color_embed(ps_global
->VAR_NORM_FORE_COLOR
,
8829 ps_global
->VAR_NORM_BACK_COLOR
);
8830 for(i
= 0; i
< 2 * (RGBLEN
+ 2); i
++)
8835 html_write(f
, "\015\012", 2);
8836 for(i
= HTML_INDENT(f
); i
> 0; i
--)
8839 if(! STRIP(f
)){ /* First tie, off any embedded state */
8841 html_putc(f
, TAG_EMBED
);
8842 html_putc(f
, TAG_BOLDON
);
8846 html_putc(f
, TAG_EMBED
);
8847 html_putc(f
, TAG_ULINEON
);
8850 if(HD(f
)->color
&& (HD(f
)->color
->fg
[0] || HD(f
)->color
->bg
[0])){
8851 char *p
, *tfg
, *tbg
;
8855 tfg
= HD(f
)->color
->fg
;
8856 tbg
= HD(f
)->color
->bg
;
8857 tmp
= new_color_pair(tfg
[0] ? tfg
8858 : color_to_asciirgb(ps_global
->VAR_NORM_FORE_COLOR
),
8860 : color_to_asciirgb(ps_global
->VAR_NORM_BACK_COLOR
));
8861 if(pico_is_good_colorpair(tmp
)){
8862 p
= color_embed(tfg
[0] ? tfg
8863 : ps_global
->VAR_NORM_FORE_COLOR
,
8865 : ps_global
->VAR_NORM_BACK_COLOR
);
8866 for(i
= 0; i
< 2 * (RGBLEN
+ 2); i
++)
8871 free_color_pair(&tmp
);
8878 * html_write - write given n-length string to next filter
8881 html_write(FILTER_S
*f
, char *s
, int n
)
8883 GF_INIT(f
, f
->next
);
8886 /* keep track of attribute state? Not if last char! */
8887 if(!STRIP(f
) && *s
== TAG_EMBED
&& n
-- > 0){
8888 GF_PUTC(f
->next
, TAG_EMBED
);
8902 case TAG_HANDLEOFF
:
8903 HD(f
)->in_anchor
= 0;
8904 GF_PUTC(f
->next
, TAG_INVOFF
);
8911 GF_PUTC(f
->next
, TAG_HANDLE
);
8917 GF_PUTC(f
->next
, i
);
8919 anum
= (anum
* 10) + (*++s
- '0');
8921 GF_PUTC(f
->next
, *s
);
8927 && (h
= get_handle(*HANDLESP(f
), anum
)) != NULL
8928 && (h
->type
== URL
|| h
->type
== Attach
)){
8929 HD(f
)->in_anchor
= anum
;
8940 GF_PUTC(f
->next
, (*s
++) & 0xff);
8943 GF_IP_END(f
->next
); /* clean up next's input pointers */
8948 * html_putc -- actual work of writing to next filter.
8949 * NOTE: Small opt not using full GF_END since our input
8950 * pointers don't need adjusting.
8953 html_putc(FILTER_S
*f
, int ch
)
8955 GF_INIT(f
, f
->next
);
8956 GF_PUTC(f
->next
, ch
& 0xff);
8957 GF_IP_END(f
->next
); /* clean up next's input pointers */
8963 * Only current option is to turn on embedded data stripping for text
8964 * bound to a printer or composer.
8967 gf_html2plain_opt(char *base
,
8970 HANDLE_S
**handlesp
,
8975 int margin_l
, margin_r
;
8977 op
= (HTML_OPT_S
*) fs_get(sizeof(HTML_OPT_S
));
8979 op
->base
= cpystr(base
);
8980 margin_l
= (margin
) ? margin
[0] : 0;
8981 margin_r
= (margin
) ? margin
[1] : 0;
8982 op
->indent
= margin_l
;
8983 op
->columns
= columns
- (margin_l
+ margin_r
);
8984 op
->strip
= ((flags
& GFHP_STRIPPED
) == GFHP_STRIPPED
);
8985 op
->handlesp
= handlesp
;
8986 op
->handles_loc
= ((flags
& GFHP_LOCAL_HANDLES
) == GFHP_LOCAL_HANDLES
);
8987 op
->showserver
= ((flags
& GFHP_SHOW_SERVER
) == GFHP_SHOW_SERVER
);
8988 op
->warnrisk_f
= risk_f
;
8989 op
->no_relative_links
= ((flags
& GFHP_NO_RELATIVE
) == GFHP_NO_RELATIVE
);
8990 op
->related_content
= ((flags
& GFHP_RELATED_CONTENT
) == GFHP_RELATED_CONTENT
);
8991 op
->html
= ((flags
& GFHP_HTML
) == GFHP_HTML
);
8992 op
->html_imgs
= ((flags
& GFHP_HTML_IMAGES
) == GFHP_HTML_IMAGES
);
8993 op
->element_table
= html_element_table
;
8994 return((void *) op
);
8999 gf_html2plain_rss_opt(RSS_FEED_S
**feedp
, int flags
)
9003 op
= (HTML_OPT_S
*) fs_get(sizeof(HTML_OPT_S
));
9004 memset(op
, 0, sizeof(HTML_OPT_S
));
9006 op
->base
= cpystr("");
9007 op
->element_table
= rss_element_table
;
9008 *(op
->feedp
= feedp
) = NULL
;
9009 return((void *) op
);
9013 gf_html2plain_rss_free(RSS_FEED_S
**feedp
)
9015 if(feedp
&& *feedp
){
9017 fs_give((void **) &(*feedp
)->title
);
9020 fs_give((void **) &(*feedp
)->link
);
9022 if((*feedp
)->description
)
9023 fs_give((void **) &(*feedp
)->description
);
9025 if((*feedp
)->source
)
9026 fs_give((void **) &(*feedp
)->source
);
9029 fs_give((void **) &(*feedp
)->image
);
9031 gf_html2plain_rss_free_items(&((*feedp
)->items
));
9032 fs_give((void **) feedp
);
9037 gf_html2plain_rss_free_items(RSS_ITEM_S
**itemp
)
9039 if(itemp
&& *itemp
){
9041 fs_give((void **) &(*itemp
)->title
);
9044 fs_give((void **) &(*itemp
)->link
);
9046 if((*itemp
)->description
)
9047 fs_give((void **) &(*itemp
)->description
);
9049 if((*itemp
)->source
)
9050 fs_give((void **) &(*itemp
)->source
);
9052 gf_html2plain_rss_free_items(&(*itemp
)->next
);
9053 fs_give((void **) itemp
);
9058 cid_tempfile_name(char *line
, long n
, int *is_cidp
)
9062 char *s
, *t
= NULL
, *u
, c
;
9071 if (line
[0] == '\"')
9074 if (!struncmp(line
+f2
, "cid:", 4)){
9077 s
= fs_get((n
- f2
+ 4)*sizeof(char));
9078 sprintf(s
, "<%s", line
+f2
);
9079 if (s
[strlen(s
)-1] == '\"')
9080 s
[strlen(s
)-1] = '>';
9086 /* find the tmpdir where all these files will be saved to */
9088 for(i
= 0; ps_global
->atmts
[i
].tmpdir
== NULL
&& ps_global
->atmts
[i
].description
!= NULL
; i
++);
9089 t
= ps_global
->atmts
[i
].description
? ps_global
->atmts
[i
].tmpdir
: NULL
;
9092 /* now we need to look for s in the list of attachments */
9093 for (i
= 0, found
= 0; found
== 0 && ps_global
->atmts
[i
].description
!= NULL
; i
++)
9094 if (ps_global
->atmts
[i
].body
9095 && ps_global
->atmts
[i
].body
->type
== TYPEIMAGE
9096 && strcmp(ps_global
->atmts
[i
].body
->id
, s
) == 0){
9101 fs_give((void **) &s
);
9102 if(found
&& ps_global
->atmts
[i
].cid_tmpfile
== NULL
){
9104 if (ps_global
->atmts
[i
].cid_tmpfile
== NULL
){
9105 for(param
= ps_global
->atmts
[i
].body
->parameter
; param
; param
= param
->next
){
9106 if (!strucmp(param
->attribute
, "NAME")){
9107 strncpy(imgfile
, param
->value
, sizeof(imgfile
));
9108 imgfile
[sizeof(imgfile
)-1] = '\0';
9109 extp
= strrchr(imgfile
, '.');
9113 ps_global
->atmts
[i
].cid_tmpfile
= temp_nam_ext(t
, "tmp-img-", extp
);
9116 if(found
&& ps_global
->atmts
[i
].cid_tmpfile
!= NULL
)
9117 s
= strstr(ps_global
->atmts
[i
].cid_tmpfile
, "tmp-img-");
9125 #define COLLECT(X, C) { \
9126 if((X)->n == buflen){ \
9127 fs_resize((void **) &((X)->line), buflen + 1024); \
9128 (X)->linep = (X)->line + buflen; \
9131 *((X)->linep)++ = (C); \
9132 (X)->n = (X)->linep - (X)->line; \
9135 #define RESET_FILTER(X) { \
9136 (X)->linep = (X)->line; \
9141 gf_html_cid2file(FILTER_S
*f
, int cmd
)
9144 register unsigned char c
;
9145 static long buflen
= 0L;
9147 GF_INIT(f
, f
->next
);
9150 register int state
= f
->f1
;
9152 while(GF_GETC(f
, c
)){
9154 if(state
== 0){ /* look for "<img " */
9155 if (c
== '<') f
->f2
= 1;
9157 if (f
->f2
== 1 && (c
== 'i' || c
== 'I')) f
->f2
= 2;
9158 else if (f
->f2
== 2 && (c
== 'm' || c
== 'M')) f
->f2
= 3;
9159 else if (f
->f2
== 3 && (c
== 'g' || c
== 'G')) f
->f2
= 4;
9160 else if (f
->f2
== 4 && ASCII_ISSPACE(c
)){ f
->f2
= 0; state
= 1; }
9164 else if(state
== 1){ /* look for "src=" */
9165 if (c
== 's' || c
== 'S') f
->f2
= 1;
9166 else if (f
->f2
== 1 && (c
== 'r' || c
== 'R')) f
->f2
= 2;
9167 else if (f
->f2
== 2 && (c
== 'c' || c
== 'C')) f
->f2
= 3;
9168 else if (f
->f2
== 3 && c
== '='){ GF_PUTC(f
->next
, c
); state
= 2; }
9169 else if (f
->f2
== 3 && !ASCII_ISSPACE(c
)) f
->f2
= 0;
9172 else if (state
== 2){ /* collect all data */
9173 if(ASCII_ISSPACE(c
) || c
== '>'){
9177 char *s
= cid_tempfile_name(f
->line
, f
->n
, &is_cid
);
9181 for(; *s
!= '\0'; s
++)
9185 GF_PUTC(f
->next
, '\"');
9187 for(p
= f
->line
; f
->n
; f
->n
--, p
++){
9188 if(*p
== '\"') continue;
9189 GF_PUTC(f
->next
, *p
);
9193 GF_PUTC(f
->next
, '\"');
9194 /* no need to write "c" right now to the stream. It will be written below */
9195 state
= ASCII_ISSPACE(c
) ? 1 : 0;
9198 else COLLECT(f
, c
); /* collect this data */
9203 GF_PUTC(f
->next
, c
);
9209 else if(cmd
== GF_EOD
){
9211 char *s
= cid_tempfile_name(f
->line
, f
->n
, &f
->f2
);
9212 GF_PUTC(f
->next
, '\"');
9214 for(p
= s
; *p
; p
++){
9215 if(*p
== '\"') continue;
9216 GF_PUTC(f
->next
, *p
);
9219 GF_PUTC(f
->next
, '\"');
9220 GF_PUTC(f
->next
, '>');
9224 fs_give((void **)&(f
->line
)); /* free temp line buffer */
9225 (void) GF_FLUSH(f
->next
);
9226 (*f
->next
->f
)(f
->next
, GF_EOD
);
9228 else if(cmd
== GF_RESET
){
9229 dprint((9, "-- gf_reset cid2file\n"));
9230 f
->n
= 0L; /* number of bytes in buffer */
9231 f
->f1
= 0; /* state */
9232 f
->f2
= 0; /* total number of bytes read that match pattern */
9233 f
->t
= *(char *)f
->opt
;
9237 /* END OF HTML-TO-PLAIN text filter */
9240 * ESCAPE CODE FILTER - remove unknown and possibly dangerous escape codes
9241 * from the text stream.
9244 #define MAX_ESC_LEN 5
9247 * the simple filter, removes unknown escape codes from the stream
9250 gf_escape_filter(FILTER_S
*f
, int flg
)
9253 GF_INIT(f
, f
->next
);
9256 register unsigned char c
;
9257 register int state
= f
->f1
;
9259 while(GF_GETC(f
, c
)){
9262 if(c
== '\033' || f
->n
== MAX_ESC_LEN
){
9263 f
->line
[f
->n
] = '\0';
9265 if(!match_escapes(f
->line
)){
9266 GF_PUTC(f
->next
, '^');
9267 GF_PUTC(f
->next
, '[');
9270 GF_PUTC(f
->next
, '\033');
9274 GF_PUTC(f
->next
, *p
++);
9279 state
= 0; /* fall thru */
9282 f
->line
[f
->n
++] = c
; /* collect */
9290 GF_PUTC(f
->next
, c
);
9296 else if(flg
== GF_EOD
){
9298 if(!match_escapes(f
->line
)){
9299 GF_PUTC(f
->next
, '^');
9300 GF_PUTC(f
->next
, '[');
9303 GF_PUTC(f
->next
, '\033');
9306 for(p
= f
->line
; f
->n
; f
->n
--, p
++)
9307 GF_PUTC(f
->next
, *p
);
9309 fs_give((void **)&(f
->line
)); /* free temp line buffer */
9310 (void) GF_FLUSH(f
->next
);
9311 (*f
->next
->f
)(f
->next
, GF_EOD
);
9313 else if(flg
== GF_RESET
){
9314 dprint((9, "-- gf_reset escape\n"));
9317 f
->linep
= f
->line
= (char *)fs_get((MAX_ESC_LEN
+ 1) * sizeof(char));
9324 * CONTROL CHARACTER FILTER - transmogrify control characters into their
9325 * corresponding string representations (you know, ^blah and such)...
9329 * the simple filter transforms unknown control characters in the stream
9330 * into harmless strings.
9333 gf_control_filter(FILTER_S
*f
, int flg
)
9335 GF_INIT(f
, f
->next
);
9338 register unsigned char c
;
9339 register int filt_only_c0
;
9341 filt_only_c0
= f
->opt
? (*(int *) f
->opt
) : 0;
9343 while(GF_GETC(f
, c
)){
9345 if(((c
< 0x20 || c
== 0x7f)
9346 || (c
>= 0x80 && c
< 0xA0 && !filt_only_c0
))
9347 && !(ASCII_ISSPACE((unsigned char) c
)
9348 || c
== '\016' || c
== '\017' || c
== '\033')){
9349 GF_PUTC(f
->next
, c
>= 0x80 ? '~' : '^');
9350 GF_PUTC(f
->next
, (c
== 0x7f) ? '?' : (c
& 0x1f) + '@');
9353 GF_PUTC(f
->next
, c
);
9358 else if(flg
== GF_EOD
){
9359 (void) GF_FLUSH(f
->next
);
9360 (*f
->next
->f
)(f
->next
, GF_EOD
);
9366 * function called from the outside to set
9367 * control filter's option, which says to filter C0 control characters
9368 * but not C1 control chars. We don't call it at all if we don't want
9369 * to filter C0 chars either.
9372 gf_control_filter_opt(int *filt_only_c0
)
9374 return((void *) filt_only_c0
);
9379 * TAG FILTER - quote all TAG_EMBED characters by doubling them.
9380 * This prevents the possibility of embedding other tags.
9381 * We assume that this filter should only be used for something
9382 * that is eventually writing to a display, which has the special
9383 * knowledge of quoted TAG_EMBEDs.
9386 gf_tag_filter(FILTER_S
*f
, int flg
)
9388 GF_INIT(f
, f
->next
);
9391 register unsigned char c
;
9393 while(GF_GETC(f
, c
)){
9395 if((c
& 0xff) == (TAG_EMBED
& 0xff)){
9396 GF_PUTC(f
->next
, TAG_EMBED
);
9397 GF_PUTC(f
->next
, c
);
9400 GF_PUTC(f
->next
, c
);
9405 else if(flg
== GF_EOD
){
9406 (void) GF_FLUSH(f
->next
);
9407 (*f
->next
->f
)(f
->next
, GF_EOD
);
9413 * LINEWRAP FILTER - insert CRLF's at end of nearest whitespace before
9414 * specified line width
9418 typedef struct wrap_col_s
{
9423 unsigned do_indent
:1;
9424 unsigned on_comma
:1;
9430 unsigned leave_flowed
:1;
9431 unsigned use_color
:1;
9432 unsigned hdr_color
:1;
9433 unsigned for_compose
:1;
9434 unsigned handle_soft_hyphen
:1;
9435 unsigned saw_soft_hyphen
:1;
9436 unsigned trailing_space
:1;
9437 unsigned char utf8buf
[7];
9438 unsigned char *utf8bufp
;
9459 #define WRAP_MARG_L(F) (((WRAP_S *)(F)->opt)->margin_l)
9460 #define WRAP_MARG_R(F) (((WRAP_S *)(F)->opt)->margin_r)
9461 #define WRAP_COL(F) (((WRAP_S *)(F)->opt)->wrap_col - WRAP_MARG_R(F) - ((((WRAP_S *)(F)->opt)->leave_flowed) ? 1 : 0))
9462 #define WRAP_MAX_COL(F) (((WRAP_S *)(F)->opt)->wrap_max - WRAP_MARG_R(F) - ((((WRAP_S *)(F)->opt)->leave_flowed) ? 1 : 0))
9463 #define WRAP_INDENT(F) (((WRAP_S *)(F)->opt)->indent)
9464 #define WRAP_DO_IND(F) (((WRAP_S *)(F)->opt)->do_indent)
9465 #define WRAP_COMMA(F) (((WRAP_S *)(F)->opt)->on_comma)
9466 #define WRAP_FLOW(F) (((WRAP_S *)(F)->opt)->flowed)
9467 #define WRAP_DELSP(F) (((WRAP_S *)(F)->opt)->delsp)
9468 #define WRAP_FL_QD(F) (((WRAP_S *)(F)->opt)->quote_depth)
9469 #define WRAP_FL_QC(F) (((WRAP_S *)(F)->opt)->quote_count)
9470 #define WRAP_FL_SIG(F) (((WRAP_S *)(F)->opt)->sig)
9471 #define WRAP_HARD(F) (((WRAP_S *)(F)->opt)->hard_nl)
9472 #define WRAP_LV_FLD(F) (((WRAP_S *)(F)->opt)->leave_flowed)
9473 #define WRAP_USE_CLR(F) (((WRAP_S *)(F)->opt)->use_color)
9474 #define WRAP_HDR_CLR(F) (((WRAP_S *)(F)->opt)->hdr_color)
9475 #define WRAP_FOR_CMPS(F) (((WRAP_S *)(F)->opt)->for_compose)
9476 #define WRAP_HANDLE_SOFT_HYPHEN(F) (((WRAP_S *)(F)->opt)->handle_soft_hyphen)
9477 #define WRAP_SAW_SOFT_HYPHEN(F) (((WRAP_S *)(F)->opt)->saw_soft_hyphen)
9478 #define WRAP_UTF8BUF(F, C) (((WRAP_S *)(F)->opt)->utf8buf[C])
9479 #define WRAP_UTF8BUFP(F) (((WRAP_S *)(F)->opt)->utf8bufp)
9480 #define WRAP_STATE(F) (((WRAP_S *)(F)->opt)->state)
9481 #define WRAP_QUOTED(F) (((WRAP_S *)(F)->opt)->quoted)
9482 #define WRAP_TAGS(F) (((WRAP_S *)(F)->opt)->tags)
9483 #define WRAP_BOLD(F) (((WRAP_S *)(F)->opt)->bold)
9484 #define WRAP_ULINE(F) (((WRAP_S *)(F)->opt)->uline)
9485 #define WRAP_INVERSE(F) (((WRAP_S *)(F)->opt)->inverse)
9486 #define WRAP_LASTC(F) (((WRAP_S *)(F)->opt)->lineendp)
9487 #define WRAP_EMBED(F) (((WRAP_S *)(F)->opt)->embedded)
9488 #define WRAP_ANCHOR(F) (((WRAP_S *)(F)->opt)->anchor)
9489 #define WRAP_PB_OFF(F) (((WRAP_S *)(F)->opt)->prefbrk)
9490 #define WRAP_PB_LEN(F) (((WRAP_S *)(F)->opt)->prefbrkn)
9491 #define WRAP_ALLWSP(F) (((WRAP_S *)(F)->opt)->allwsp)
9492 #define WRAP_SPC_LEN(F) (((WRAP_S *)(F)->opt)->space_len)
9493 #define WRAP_TRL_SPC(F) (((WRAP_S *)(F)->opt)->trailing_space)
9494 #define WRAP_SPEC(F, C) ((WRAP_S *) (F)->opt)->special[C]
9495 #define WRAP_COLOR(F) (((WRAP_S *)(F)->opt)->color)
9496 #define WRAP_COLOR_SET(F) ((WRAP_COLOR(F)) && (WRAP_COLOR(F)->fg[0]))
9497 #define WRAP_SPACES(F) (((WRAP_S *)(F)->opt)->spaces)
9498 #define WRAP_PUTC(F,C,W) { \
9499 if((F)->linep == WRAP_LASTC(F)){ \
9500 size_t offset = (F)->linep - (F)->line; \
9501 fs_resize((void **) &(F)->line, \
9502 (2 * offset) * sizeof(char)); \
9503 (F)->linep = &(F)->line[offset]; \
9504 WRAP_LASTC(F) = &(F)->line[2*offset-1]; \
9506 *(F)->linep++ = (C); \
9510 #define WRAP_EMBED_PUTC(F,C) { \
9512 WRAP_PUTC((F), C, 0); \
9515 so_writec(C, WRAP_SPACES(F)); \
9518 #define WRAP_COLOR_UNSET(F) { \
9519 if(WRAP_COLOR_SET(F)){ \
9520 WRAP_COLOR(F)->fg[0] = '\0'; \
9525 * wrap_flush_embed flags
9527 #define WFE_NONE 0 /* Nothing special */
9528 #define WFE_CNT_HANDLE 1 /* account for/don't write handles */
9531 int wrap_flush(FILTER_S
*, unsigned char **, unsigned char **, unsigned char **, unsigned char **);
9532 int wrap_flush_embed(FILTER_S
*, unsigned char **, unsigned char **,
9533 unsigned char **, unsigned char **);
9534 int wrap_flush_s(FILTER_S
*,char *, int, int, unsigned char **, unsigned char **,
9535 unsigned char **, unsigned char **, int);
9536 int wrap_eol(FILTER_S
*, int, unsigned char **, unsigned char **,
9537 unsigned char **, unsigned char **);
9538 int wrap_bol(FILTER_S
*, int, int, unsigned char **,
9539 unsigned char **, unsigned char **, unsigned char **);
9540 int wrap_quote_insert(FILTER_S
*, unsigned char **, unsigned char **,
9541 unsigned char **, unsigned char **);
9544 * the no longer simple filter, breaks lines at end of white space nearest
9545 * to global "gf_wrap_width" in length
9546 * It also supports margins, indents (inverse indenting, really) and
9547 * flowed text (ala RFC 3676)
9551 gf_wrap(FILTER_S
*f
, int flg
)
9554 GF_INIT(f
, f
->next
);
9558 * f->line buffer where next "word" being considered is stored
9559 * f->f2 width in screen cells of f->line stuff
9560 * f->n width in screen cells of the part of this line committed to next
9565 register unsigned char c
;
9566 register int state
= f
->f1
;
9567 int width
, full_character
;
9569 while(GF_GETC(f
, c
)){
9572 case CCR
: /* CRLF or CR in text ? */
9573 state
= BOL
; /* either way, handle start */
9577 if(f
->f2
== 0 && WRAP_SPC_LEN(f
) && WRAP_TRL_SPC(f
)){
9579 * whack trailing space char, but be aware
9580 * of embeds in space buffer. grok them just
9581 * in case they contain a 0x20 value
9584 char *sb
, *sbp
, *scp
= NULL
;
9587 for(sb
= sbp
= (char *)so_text(WRAP_SPACES(f
)); *sbp
; sbp
++){
9598 if(strlen(sbp
) >= x
)
9605 if(strlen(sbp
) >= RGBLEN
)
9606 sbp
+= (RGBLEN
- 1);
9621 /* replace space buf without trailing space char */
9623 STORE_S
*ns
= so_get(CharStar
, NULL
, EDIT_ACCESS
);
9627 WRAP_TRL_SPC(f
) = 0;
9632 so_give(&WRAP_SPACES(f
));
9633 WRAP_SPACES(f
) = ns
;
9637 else{ /* fixed line */
9639 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9640 wrap_eol(f
, 0, &ip
, &eib
, &op
, &eob
);
9643 * When we get to a real end of line, we don't need to
9644 * remember what the special color was anymore because
9645 * we aren't going to be changing back to it. We unset it
9646 * so that we don't keep resetting the color to normal.
9648 WRAP_COLOR_UNSET(f
);
9651 if(c
== '\012'){ /* get c following LF */
9654 /* else c is first char of new line, fall thru */
9657 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9658 wrap_eol(f
, 0, &ip
, &eib
, &op
, &eob
);
9659 WRAP_COLOR_UNSET(f
); /* see note above */
9663 /* else fall thru to deal with beginning of line */
9669 WRAP_FL_QC(f
) = 1; /* init it */
9670 state
= FL_QLEV
; /* go collect it */
9673 /* if EMBEDed, process it and return here */
9674 if(c
== (unsigned char) TAG_EMBED
){
9675 WRAP_EMBED_PUTC(f
, TAG_EMBED
);
9676 WRAP_STATE(f
) = state
;
9681 /* quote level change implies new paragraph */
9684 if(WRAP_HARD(f
) == 0){
9686 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9687 wrap_eol(f
, 0, &ip
, &eib
, &op
, &eob
);
9688 WRAP_COLOR_UNSET(f
); /* see note above */
9693 wrap_bol(f
, 0, 1, &ip
, &eib
, &op
,
9694 &eob
); /* write quoting prefix */
9699 case '\015' : /* a blank line? */
9700 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9701 state
= CCR
; /* go collect it */
9704 case ' ' : /* space stuffed */
9705 state
= FL_STF
; /* just eat it */
9708 case '-' : /* possible sig-dash */
9709 WRAP_FL_SIG(f
) = 1; /* init state */
9710 state
= FL_SIG
; /* go collect it */
9714 state
= DFL
; /* go back to normal */
9715 goto case_dfl
; /* handle c like DFL case */
9721 if(WRAP_COMMA(f
) && c
== TAB
){
9722 wrap_bol(f
, 1, 0, &ip
, &eib
, &op
,
9723 &eob
); /* convert to normal indent */
9727 wrap_bol(f
,0,0, &ip
, &eib
, &op
, &eob
);
9728 goto case_dfl
; /* handle c like DFL case */
9734 if(c
== '>'){ /* another level */
9738 /* if EMBEDed, process it and return here */
9739 if(c
== (unsigned char) TAG_EMBED
){
9740 WRAP_EMBED_PUTC(f
, TAG_EMBED
);
9741 WRAP_STATE(f
) = state
;
9746 /* quote level change signals new paragraph */
9747 if(WRAP_FL_QC(f
) != WRAP_FL_QD(f
)){
9748 WRAP_FL_QD(f
) = WRAP_FL_QC(f
);
9749 if(WRAP_HARD(f
) == 0){ /* add hard newline */
9750 WRAP_HARD(f
) = 1; /* hard newline */
9751 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9752 wrap_eol(f
, 0, &ip
, &eib
, &op
, &eob
);
9753 WRAP_COLOR_UNSET(f
); /* see note above */
9758 wrap_bol(f
,0,1, &ip
, &eib
, &op
, &eob
);
9763 case '\015' : /* a blank line? */
9764 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9765 state
= CCR
; /* go collect it */
9768 case ' ' : /* space-stuffed! */
9769 state
= FL_STF
; /* just eat it */
9772 case '-' : /* sig dash? */
9777 default : /* something else */
9779 goto case_dfl
; /* handle c like DFL */
9785 case FL_STF
: /* space stuffed */
9787 case '\015' : /* a blank line? */
9788 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9789 state
= CCR
; /* go collect it */
9792 case (unsigned char) TAG_EMBED
: /* process TAG data */
9793 WRAP_EMBED_PUTC(f
, TAG_EMBED
);
9794 WRAP_STATE(f
) = state
; /* and return */
9798 case '-' : /* sig dash? */
9804 default : /* something else */
9806 goto case_dfl
; /* handle c like DFL */
9811 case FL_SIG
: /* sig-dash collector */
9812 switch (WRAP_FL_SIG(f
)){ /* possible sig-dash? */
9814 if(c
!= '-'){ /* not a sigdash */
9815 if((f
->n
+ WRAP_SPC_LEN(f
) + 1) > WRAP_COL(f
)){
9816 wrap_flush_embed(f
, &ip
, &eib
, &op
,
9817 &eob
); /* note any embedded*/
9818 wrap_eol(f
, 1, &ip
, &eib
,
9819 &op
, &eob
); /* plunk down newline */
9820 wrap_bol(f
, 1, 1, &ip
, &eib
,
9821 &op
, &eob
); /* write any prefix */
9824 WRAP_PUTC(f
,'-', 1); /* write what we got */
9831 /* don't put anything yet until we know to wrap or not */
9836 if(c
!= ' '){ /* not a sigdash */
9837 WRAP_PUTC(f
, '-', 1);
9838 if((f
->n
+ WRAP_SPC_LEN(f
) + 2) > WRAP_COL(f
)){
9839 wrap_flush_embed(f
, &ip
, &eib
, &op
,
9840 &eob
); /* note any embedded*/
9841 wrap_eol(f
, 1, &ip
, &eib
,
9842 &op
, &eob
); /* plunk down newline */
9843 wrap_bol(f
, 1, 1, &ip
, &eib
, &op
,
9844 &eob
); /* write any prefix */
9847 WRAP_PUTC(f
,'-', 1); /* write what we got */
9854 /* don't put anything yet until we know to wrap or not */
9859 if(c
== '\015'){ /* success! */
9860 /* known sigdash, newline if soft nl */
9861 if(WRAP_SPC_LEN(f
)){
9862 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9863 wrap_eol(f
, 0, &ip
, &eib
, &op
, &eob
);
9864 wrap_bol(f
, 0, 1, &ip
, &eib
, &op
, &eob
);
9874 WRAP_FL_SIG(f
) = 4; /* possible success */
9879 case (unsigned char) TAG_EMBED
:
9881 * At this point we're almost 100% sure that we've got
9882 * a sigdash. Putc it (adding newline if previous
9883 * was a soft nl) so we get it the right color
9884 * before we store this new embedded stuff
9886 if(WRAP_SPC_LEN(f
)){
9887 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9888 wrap_eol(f
, 0, &ip
, &eib
, &op
, &eob
);
9889 wrap_bol(f
, 0, 1, &ip
, &eib
, &op
, &eob
);
9898 case '\015' : /* success! */
9900 * We shouldn't get here, but in case we do, we have
9901 * not yet put the sigdash
9903 if(WRAP_SPC_LEN(f
)){
9904 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9905 wrap_eol(f
, 0, &ip
, &eib
, &op
, &eob
);
9906 wrap_bol(f
, 0, 1, &ip
, &eib
, &op
, &eob
);
9915 default : /* that's no sigdash! */
9916 /* write what we got but didn't put yet */
9917 WRAP_PUTC(f
,'-', 1);
9918 WRAP_PUTC(f
,'-', 1);
9919 WRAP_PUTC(f
,' ', 1);
9922 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9923 WRAP_SPC_LEN(f
) = 1;
9924 state
= DFL
; /* set normal state */
9925 goto case_dfl
; /* and go do "c" */
9931 WRAP_STATE(f
) = FL_SIG
; /* come back here */
9932 WRAP_FL_SIG(f
) = 6; /* and seek EOL */
9933 WRAP_EMBED_PUTC(f
, TAG_EMBED
);
9934 state
= TAG
; /* process embed */
9939 * at this point we've already putc the sigdash in case 4
9942 case (unsigned char) TAG_EMBED
:
9946 case '\015' : /* success! */
9950 default : /* that's no sigdash! */
9952 * probably never reached (fake sigdash with embedded
9953 * stuff) but if this did get reached, then we
9954 * might have accidentally disobeyed a soft nl
9957 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
9958 WRAP_SPC_LEN(f
) = 1;
9959 state
= DFL
; /* set normal state */
9960 goto case_dfl
; /* and go do "c" */
9967 dprint((2, "-- gf_wrap: BROKEN FLOW STATE: %d\n",
9970 state
= DFL
; /* set normal state */
9971 goto case_dfl
; /* and go process "c" */
9979 * This was just if(WRAP_SPEC(f, c)) before the change to add
9980 * the == 0 test. This isn't quite right, either. We should really
9981 * be looking for special characters in the UCS characters, not
9982 * in the incoming stream of UTF-8. It is not right to
9983 * call this on bytes that are in the middle of a UTF-8 character,
9984 * hence the == 0 test which restricts it to the first byte
9985 * of a character. This isn't right, either, but it's closer.
9986 * Also change the definition of WRAP_SPEC so that isspace only
9987 * matches ascii characters, which will never be in the middle
9988 * of a UTF-8 multi-byte character.
9990 if((WRAP_UTF8BUFP(f
) - &WRAP_UTF8BUF(f
, 0)) == 0 && WRAP_SPEC(f
, c
)){
9991 WRAP_SAW_SOFT_HYPHEN(f
) = 0;
9997 if(f
->f2
){ /* any non-lwsp to flush? */
9999 /* remember our second best break point */
10000 WRAP_PB_OFF(f
) = f
->linep
- f
->line
;
10001 WRAP_PB_LEN(f
) = f
->f2
;
10005 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
10008 switch(c
){ /* remember separator */
10011 WRAP_TRL_SPC(f
) = 1;
10012 so_writec(' ',WRAP_SPACES(f
));
10017 int i
= (int) f
->n
+ WRAP_SPC_LEN(f
);
10023 so_writec(TAB
,WRAP_SPACES(f
));
10024 WRAP_TRL_SPC(f
) = 0;
10029 default : /* some control char? */
10030 WRAP_SPC_LEN(f
) += 2;
10031 WRAP_TRL_SPC(f
) = 0;
10038 WRAP_QUOTED(f
) = !WRAP_QUOTED(f
);
10041 case '\015' : /* already has newline? */
10045 case '\012' : /* bare LF in text? */
10046 wrap_flush(f
, &ip
, &eib
, &op
, &eob
); /* they must've */
10047 wrap_eol(f
, 0, &ip
, &eib
, &op
, &eob
); /* meant */
10048 wrap_bol(f
,1,1, &ip
, &eib
, &op
, &eob
); /* newline... */
10051 case (unsigned char) TAG_EMBED
:
10052 WRAP_EMBED_PUTC(f
, TAG_EMBED
);
10053 WRAP_STATE(f
) = state
;
10058 if(!WRAP_QUOTED(f
)){
10059 /* handle this special case in general code below */
10060 if(f
->n
+ WRAP_SPC_LEN(f
) + f
->f2
+ 1 > WRAP_MAX_COL(f
)
10061 && WRAP_ALLWSP(f
) && WRAP_PB_OFF(f
))
10064 if(f
->n
+ WRAP_SPC_LEN(f
) + f
->f2
+ 1 > WRAP_COL(f
)){
10065 if(WRAP_ALLWSP(f
)) /* if anything visible */
10066 wrap_flush(f
, &ip
, &eib
, &op
,
10067 &eob
); /* ... blat buf'd chars */
10069 wrap_eol(f
, 1, &ip
, &eib
, &op
,
10070 &eob
); /* plunk down newline */
10071 wrap_bol(f
, 1, 1, &ip
, &eib
, &op
,
10072 &eob
); /* write any prefix */
10075 WRAP_PUTC(f
, ',', 1); /* put out comma */
10076 wrap_flush(f
, &ip
, &eib
, &op
,
10077 &eob
); /* write buf'd chars */
10084 else if(WRAP_HANDLE_SOFT_HYPHEN(f
)
10085 && (WRAP_UTF8BUFP(f
) - &WRAP_UTF8BUF(f
, 0)) == 1
10086 && WRAP_UTF8BUF(f
, 0) == 0xC2 && c
== 0xAD){
10088 * This is a soft hyphen. If there is enough space for
10089 * a real hyphen to fit on the line here then we can
10090 * flush everything up to before the soft hyphen,
10091 * and simply remember that we saw a soft hyphen.
10092 * If it turns out that we can't fit the next piece in
10093 * then wrap_eol will append a real hyphen to the line.
10094 * If we can fit another piece in it will be because we've
10095 * reached the next break point. At that point we'll flush
10096 * everything but won't include the unneeded hyphen. We erase
10097 * the fact that we saw this soft hyphen because it have
10098 * become irrelevant.
10100 * If the hyphen is the character that puts us over the edge
10101 * we go through the else case.
10104 /* erase this soft hyphen character from buffer */
10105 WRAP_UTF8BUFP(f
) = &WRAP_UTF8BUF(f
, 0);
10107 if((f
->n
+ WRAP_SPC_LEN(f
) + f
->f2
+ 1) <= WRAP_COL(f
)){
10108 if(f
->f2
) /* any non-lwsp to flush? */
10109 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
10111 /* remember that we saw the soft hyphen */
10112 WRAP_SAW_SOFT_HYPHEN(f
) = 1;
10116 * Everything up to the hyphen fits, otherwise it
10117 * would have already been flushed the last time
10118 * through the loop. But the hyphen won't fit. So
10119 * we need to go back to the last line break and
10120 * break there instead. Then start a new line with
10121 * the buffered up characters and the soft hyphen.
10123 wrap_flush_embed(f
, &ip
, &eib
, &op
, &eob
);
10124 wrap_eol(f
, 1, &ip
, &eib
, &op
,
10125 &eob
); /* plunk down newline */
10126 wrap_bol(f
,1,1, &ip
, &eib
, &op
,
10127 &eob
); /* write any prefix */
10130 * Now we're in the same situation as we would have
10131 * been above except we're on a new line. Try to
10132 * flush out the characters seen up to the hyphen.
10134 if((f
->n
+ WRAP_SPC_LEN(f
) + f
->f2
+ 1) <= WRAP_COL(f
)){
10135 if(f
->f2
) /* any non-lwsp to flush? */
10136 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
10138 /* remember that we saw the soft hyphen */
10139 WRAP_SAW_SOFT_HYPHEN(f
) = 1;
10142 WRAP_SAW_SOFT_HYPHEN(f
) = 0;
10148 full_character
= 0;
10151 unsigned char *inputp
;
10152 unsigned long remaining_octets
;
10155 if(WRAP_UTF8BUFP(f
) < &WRAP_UTF8BUF(f
, 0) + 6){ /* always true */
10157 *WRAP_UTF8BUFP(f
)++ = c
;
10158 remaining_octets
= WRAP_UTF8BUFP(f
) - &WRAP_UTF8BUF(f
, 0);
10159 if(remaining_octets
== 1 && isascii(WRAP_UTF8BUF(f
, 0))){
10162 int i
= (int) f
->n
;
10169 else if(c
< 0x80 && iscntrl((unsigned char) c
))
10175 inputp
= &WRAP_UTF8BUF(f
, 0);
10176 ucs
= (UCS
) utf8_get(&inputp
, &remaining_octets
);
10178 case U8G_ENDSTRG
: /* incomplete character, wait */
10179 case U8G_ENDSTRI
: /* incomplete character, wait */
10184 if(ucs
& U8G_ERROR
|| ucs
== UBOGON
){
10186 * None of these cases is supposed to happen. If it
10187 * does happen then the input stream isn't UTF-8
10188 * so something is wrong. Writechar will treat
10189 * each octet in the input buffer as a separate
10190 * error character and print a '?' for each,
10191 * so the width will be the number of octets.
10193 width
= WRAP_UTF8BUFP(f
) - &WRAP_UTF8BUF(f
, 0);
10197 /* got a character */
10198 width
= wcellwidth(ucs
);
10203 * This happens when we have a UTF-8 character that
10204 * we aren't able to print in our locale. For example,
10205 * if the locale is setup with the terminal
10206 * expecting ISO-8859-1 characters then there are
10207 * lots of UTF-8 characters that can't be printed.
10208 * Print a '?' instead.
10220 * This cannot happen because an error would have
10221 * happened at least by character #6. So if we get
10222 * here there is a bug in utf8_get().
10224 if(WRAP_UTF8BUFP(f
) == &WRAP_UTF8BUF(f
, 0) + 6){
10225 *WRAP_UTF8BUFP(f
)++ = c
;
10229 * We could possibly do some more sophisticated
10230 * resynchronization here, but we aren't doing
10231 * anything in Writechar so it wouldn't match up
10232 * with that anyway. Just figure each character will
10233 * end up being printed as a ? character.
10235 width
= WRAP_UTF8BUFP(f
) - &WRAP_UTF8BUF(f
, 0);
10240 if(WRAP_ALLWSP(f
)){
10242 * Nothing is visible yet but the first word may be too long
10243 * all by itself. We need to break early.
10245 if(f
->n
+ WRAP_SPC_LEN(f
) + f
->f2
+ width
> WRAP_MAX_COL(f
)){
10247 * A little reaching behind the curtain here.
10248 * if there's at least a preferable break point, use
10249 * it and stuff what's left back into the wrap buffer.
10250 * The "nwsp" latch is used to skip leading whitespace
10251 * The second half of the test prevents us from wrapping
10252 * at the preferred break point in the case that it
10253 * is so early in the line that it doesn't help.
10254 * That is, the width of the indent is even more than
10255 * the width of the first part before the preferred
10256 * break point. An example would be breaking after
10257 * "To:" when the indent is 4 which is > 3.
10259 if(WRAP_PB_OFF(f
) && WRAP_PB_LEN(f
) >= WRAP_INDENT(f
)){
10260 char *p1
= f
->line
+ WRAP_PB_OFF(f
);
10261 char *p2
= f
->linep
;
10263 int nwsp
= 0, left_after_wrap
;
10265 left_after_wrap
= f
->f2
- WRAP_PB_LEN(f
);
10267 f
->f2
= WRAP_PB_LEN(f
);
10270 wrap_flush(f
, &ip
, &eib
, &op
, &eob
); /* flush shortened buf */
10272 /* put back rest of characters */
10275 if(!(c2
== ' ' || c2
== '\t') || nwsp
){
10276 WRAP_PUTC(f
, c2
, 0);
10280 left_after_wrap
--; /* wrong if a tab! */
10283 f
->f2
= MAX(left_after_wrap
, 0);
10285 wrap_eol(f
, 1, &ip
, &eib
, &op
,
10286 &eob
); /* plunk down newline */
10287 wrap_bol(f
,1,1, &ip
, &eib
, &op
,
10288 &eob
); /* write any prefix */
10292 * If we do the less preferable break point at
10293 * the space we don't want to lose the fact that
10294 * we might be able to break at this comma for
10297 if(full_character
&& c
== ','){
10298 WRAP_PUTC(f
, c
, 1);
10299 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
10300 WRAP_UTF8BUFP(f
) = &WRAP_UTF8BUF(f
, 0);
10304 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
10306 wrap_eol(f
, 1, &ip
, &eib
, &op
,
10307 &eob
); /* plunk down newline */
10308 wrap_bol(f
,1,1, &ip
, &eib
, &op
,
10309 &eob
); /* write any prefix */
10313 else if((f
->n
+ WRAP_SPC_LEN(f
) + f
->f2
+ width
) > WRAP_COL(f
)){
10314 wrap_flush_embed(f
, &ip
, &eib
, &op
, &eob
);
10315 wrap_eol(f
, 1, &ip
, &eib
, &op
,
10316 &eob
); /* plunk down newline */
10317 wrap_bol(f
,1,1, &ip
, &eib
, &op
,
10318 &eob
); /* write any prefix */
10322 * Commit entire multibyte UTF-8 character at once
10323 * instead of writing partial characters into the
10326 if(full_character
){
10329 for(q
= &WRAP_UTF8BUF(f
, 0); q
< WRAP_UTF8BUFP(f
); q
++){
10330 WRAP_PUTC(f
, *q
, width
);
10334 WRAP_UTF8BUFP(f
) = &WRAP_UTF8BUF(f
, 0);
10341 WRAP_EMBED_PUTC(f
, c
);
10344 WRAP_EMBED(f
) = -1;
10350 WRAP_EMBED(f
) = RGBLEN
;
10355 state
= WRAP_STATE(f
);
10362 WRAP_EMBED_PUTC(f
, c
);
10369 WRAP_PUTC(f
, c
, 0);
10372 so_writec(c
, WRAP_SPACES(f
));
10374 if(!(WRAP_EMBED(f
) -= 1)){
10375 state
= WRAP_STATE(f
);
10383 GF_END(f
, f
->next
);
10385 else if(flg
== GF_EOD
){
10386 wrap_flush(f
, &ip
, &eib
, &op
, &eob
);
10388 free_color_pair(&WRAP_COLOR(f
));
10390 fs_give((void **) &f
->line
); /* free temp line buffer */
10391 so_give(&WRAP_SPACES(f
));
10392 fs_give((void **) &f
->opt
); /* free wrap widths struct */
10393 (void) GF_FLUSH(f
->next
);
10394 (*f
->next
->f
)(f
->next
, GF_EOD
);
10396 else if(flg
== GF_RESET
){
10397 dprint((9, "-- gf_reset wrap\n"));
10399 f
->n
= 0L; /* displayed length of line so far */
10400 f
->f2
= 0; /* displayed length of buffered chars */
10401 WRAP_HARD(f
) = 1; /* starting at beginning of line */
10402 if(! (WRAP_S
*) f
->opt
)
10403 f
->opt
= gf_wrap_filter_opt(75, 80, NULL
, 0, 0);
10405 while(WRAP_INDENT(f
) >= WRAP_MAX_COL(f
))
10406 WRAP_INDENT(f
) /= 2;
10408 f
->line
= (char *) fs_get(WRAP_MAX_COL(f
) * sizeof(char));
10409 f
->linep
= f
->line
;
10410 WRAP_LASTC(f
) = &f
->line
[WRAP_MAX_COL(f
) - 1];
10412 for(i
= 0; i
< 256; i
++)
10413 ((WRAP_S
*) f
->opt
)->special
[i
] = ((i
== '\"' && WRAP_COMMA(f
))
10416 || (i
== (unsigned char) TAG_EMBED
10418 || (i
== ',' && WRAP_COMMA(f
)
10419 && !WRAP_QUOTED(f
))
10420 || ASCII_ISSPACE(i
));
10421 WRAP_SPACES(f
) = so_get(CharStar
, NULL
, EDIT_ACCESS
);
10422 WRAP_UTF8BUFP(f
) = &WRAP_UTF8BUF(f
, 0);
10427 wrap_flush(FILTER_S
*f
, unsigned char **ipp
, unsigned char **eibp
,
10428 unsigned char **opp
, unsigned char **eobp
)
10433 s
= (char *)so_text(WRAP_SPACES(f
));
10434 n
= so_tell(WRAP_SPACES(f
));
10435 so_seek(WRAP_SPACES(f
), 0L, 0);
10436 wrap_flush_s(f
, s
, n
, WRAP_SPC_LEN(f
), ipp
, eibp
, opp
, eobp
, WFE_NONE
);
10437 so_truncate(WRAP_SPACES(f
), 0L);
10438 WRAP_SPC_LEN(f
) = 0;
10439 WRAP_TRL_SPC(f
) = 0;
10441 n
= f
->linep
- f
->line
;
10442 wrap_flush_s(f
, s
, n
, f
->f2
, ipp
, eibp
, opp
, eobp
, WFE_NONE
);
10444 f
->linep
= f
->line
;
10445 WRAP_PB_OFF(f
) = 0;
10446 WRAP_PB_LEN(f
) = 0;
10452 wrap_flush_embed(FILTER_S
*f
, unsigned char **ipp
, unsigned char **eibp
, unsigned char **opp
, unsigned char **eobp
)
10456 s
= (char *)so_text(WRAP_SPACES(f
));
10457 n
= so_tell(WRAP_SPACES(f
));
10458 so_seek(WRAP_SPACES(f
), 0L, 0);
10459 wrap_flush_s(f
, s
, n
, 0, ipp
, eibp
, opp
, eobp
, WFE_CNT_HANDLE
);
10460 so_truncate(WRAP_SPACES(f
), 0L);
10461 WRAP_SPC_LEN(f
) = 0;
10462 WRAP_TRL_SPC(f
) = 0;
10468 wrap_flush_s(FILTER_S
*f
, char *s
, int n
, int w
, unsigned char **ipp
,
10469 unsigned char **eibp
, unsigned char **opp
, unsigned char **eobp
, int flags
)
10473 for(; n
> 0; n
--,s
++){
10474 if(*s
== TAG_EMBED
){
10478 GF_PUTC_GLO(f
->next
,TAG_EMBED
);
10479 GF_PUTC_GLO(f
->next
,TAG_BOLDON
);
10483 GF_PUTC_GLO(f
->next
,TAG_EMBED
);
10484 GF_PUTC_GLO(f
->next
,TAG_BOLDOFF
);
10488 GF_PUTC_GLO(f
->next
,TAG_EMBED
);
10489 GF_PUTC_GLO(f
->next
,TAG_ULINEON
);
10492 case TAG_ULINEOFF
:
10493 GF_PUTC_GLO(f
->next
,TAG_EMBED
);
10494 GF_PUTC_GLO(f
->next
,TAG_ULINEOFF
);
10498 GF_PUTC_GLO(f
->next
,TAG_EMBED
);
10499 GF_PUTC_GLO(f
->next
,TAG_INVOFF
);
10500 WRAP_ANCHOR(f
) = 0;
10503 if((flags
& WFE_CNT_HANDLE
) == 0)
10504 GF_PUTC_GLO(f
->next
,TAG_EMBED
);
10509 if((flags
& WFE_CNT_HANDLE
) == 0)
10510 GF_PUTC_GLO(f
->next
, TAG_HANDLE
);
10515 if((flags
& WFE_CNT_HANDLE
) == 0)
10516 GF_PUTC_GLO(f
->next
, i
);
10518 WRAP_ANCHOR(f
) = 0;
10520 WRAP_ANCHOR(f
) = (WRAP_ANCHOR(f
) * 10) + (*++s
-'0');
10522 if((flags
& WFE_CNT_HANDLE
) == 0)
10523 GF_PUTC_GLO(f
->next
,*s
);
10530 if(pico_usingcolor() && n
>= RGBLEN
){
10532 GF_PUTC_GLO(f
->next
,TAG_EMBED
);
10533 GF_PUTC_GLO(f
->next
,TAG_FGCOLOR
);
10535 WRAP_COLOR(f
)=new_color_pair(NULL
,NULL
);
10536 strncpy(WRAP_COLOR(f
)->fg
, s
+1, RGBLEN
);
10537 WRAP_COLOR(f
)->fg
[RGBLEN
]='\0';
10541 GF_PUTC_GLO(f
->next
,
10546 if(pico_usingcolor() && n
>= RGBLEN
){
10548 GF_PUTC_GLO(f
->next
,TAG_EMBED
);
10549 GF_PUTC_GLO(f
->next
,TAG_BGCOLOR
);
10551 WRAP_COLOR(f
)=new_color_pair(NULL
,NULL
);
10552 strncpy(WRAP_COLOR(f
)->bg
, s
+1, RGBLEN
);
10553 WRAP_COLOR(f
)->bg
[RGBLEN
]='\0';
10557 GF_PUTC_GLO(f
->next
,
10568 if(f
->n
<= WRAP_MAX_COL(f
)){
10569 GF_PUTC_GLO(f
->next
, (*s
) & 0xff);
10572 dprint((2, "-- gf_wrap: OVERRUN: %c\n", (*s
) & 0xff));
10575 WRAP_ALLWSP(f
) = 0;
10583 wrap_eol(FILTER_S
*f
, int c
, unsigned char **ipp
, unsigned char **eibp
,
10584 unsigned char **opp
, unsigned char **eobp
)
10586 if(WRAP_SAW_SOFT_HYPHEN(f
)){
10587 WRAP_SAW_SOFT_HYPHEN(f
) = 0;
10588 GF_PUTC_GLO(f
->next
, '-'); /* real hyphen */
10591 if(c
&& WRAP_LV_FLD(f
))
10592 GF_PUTC_GLO(f
->next
, ' ');
10595 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10596 GF_PUTC_GLO(f
->next
, TAG_BOLDOFF
);
10600 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10601 GF_PUTC_GLO(f
->next
, TAG_ULINEOFF
);
10604 if(WRAP_INVERSE(f
) || WRAP_ANCHOR(f
)){
10605 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10606 GF_PUTC_GLO(f
->next
, TAG_INVOFF
);
10609 if(WRAP_COLOR_SET(f
)){
10612 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10613 GF_PUTC_GLO(f
->next
, TAG_FGCOLOR
);
10614 strncpy(cb
, color_to_asciirgb(ps_global
->VAR_NORM_FORE_COLOR
), sizeof(cb
));
10615 cb
[sizeof(cb
)-1] = '\0';
10618 GF_PUTC_GLO(f
->next
, *p
);
10619 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10620 GF_PUTC_GLO(f
->next
, TAG_BGCOLOR
);
10621 strncpy(cb
, color_to_asciirgb(ps_global
->VAR_NORM_BACK_COLOR
), sizeof(cb
));
10622 cb
[sizeof(cb
)-1] = '\0';
10625 GF_PUTC_GLO(f
->next
, *p
);
10628 GF_PUTC_GLO(f
->next
, '\015');
10629 GF_PUTC_GLO(f
->next
, '\012');
10631 so_truncate(WRAP_SPACES(f
), 0L);
10632 WRAP_SPC_LEN(f
) = 0;
10633 WRAP_TRL_SPC(f
) = 0;
10639 wrap_bol(FILTER_S
*f
, int ivar
, int q
, unsigned char **ipp
, unsigned char **eibp
,
10640 unsigned char **opp
, unsigned char **eobp
)
10642 int n
= WRAP_MARG_L(f
) + (ivar
? WRAP_INDENT(f
) : 0);
10644 if(WRAP_HDR_CLR(f
)){
10646 char cbuf
[RGBLEN
+1];
10649 if((k
= WRAP_MARG_L(f
)) > 0)
10653 GF_PUTC_GLO(f
->next
, ' ');
10656 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10657 GF_PUTC_GLO(f
->next
, TAG_FGCOLOR
);
10659 color_to_asciirgb(ps_global
->VAR_HEADER_GENERAL_FORE_COLOR
),
10661 cbuf
[sizeof(cbuf
)-1] = '\0';
10664 GF_PUTC_GLO(f
->next
, *p
);
10665 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10666 GF_PUTC_GLO(f
->next
, TAG_BGCOLOR
);
10668 color_to_asciirgb(ps_global
->VAR_HEADER_GENERAL_BACK_COLOR
),
10670 cbuf
[sizeof(cbuf
)-1] = '\0';
10673 GF_PUTC_GLO(f
->next
, *p
);
10678 GF_PUTC_GLO(f
->next
, ' ');
10681 WRAP_ALLWSP(f
) = 1;
10684 wrap_quote_insert(f
, ipp
, eibp
, opp
, eobp
);
10687 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10688 GF_PUTC_GLO(f
->next
, TAG_BOLDON
);
10691 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10692 GF_PUTC_GLO(f
->next
, TAG_ULINEON
);
10694 if(WRAP_INVERSE(f
)){
10695 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10696 GF_PUTC_GLO(f
->next
, TAG_INVON
);
10698 if(WRAP_COLOR_SET(f
)){
10700 if(WRAP_COLOR(f
)->fg
[0]){
10702 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10703 GF_PUTC_GLO(f
->next
, TAG_FGCOLOR
);
10704 strncpy(cb
, color_to_asciirgb(WRAP_COLOR(f
)->fg
), sizeof(cb
));
10705 cb
[sizeof(cb
)-1] = '\0';
10708 GF_PUTC_GLO(f
->next
, *p
);
10710 if(WRAP_COLOR(f
)->bg
[0]){
10712 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10713 GF_PUTC_GLO(f
->next
, TAG_BGCOLOR
);
10714 strncpy(cb
, color_to_asciirgb(WRAP_COLOR(f
)->bg
), sizeof(cb
));
10715 cb
[sizeof(cb
)-1] = '\0';
10718 GF_PUTC_GLO(f
->next
, *p
);
10721 if(WRAP_ANCHOR(f
)){
10722 char buf
[64]; int i
;
10723 GF_PUTC_GLO(f
->next
, TAG_EMBED
);
10724 GF_PUTC_GLO(f
->next
, TAG_HANDLE
);
10725 snprintf(buf
, sizeof(buf
), "%d", WRAP_ANCHOR(f
));
10726 GF_PUTC_GLO(f
->next
, (int) strlen(buf
));
10727 for(i
= 0; buf
[i
]; i
++)
10728 GF_PUTC_GLO(f
->next
, buf
[i
]);
10735 wrap_quote_insert(FILTER_S
*f
, unsigned char **ipp
, unsigned char **eibp
,
10736 unsigned char **opp
, unsigned char **eobp
)
10739 COLOR_PAIR
*col
= NULL
;
10740 char *prefix
= NULL
, *last_prefix
= NULL
;
10742 if(ps_global
->VAR_QUOTE_REPLACE_STRING
){
10743 get_pair(ps_global
->VAR_QUOTE_REPLACE_STRING
, &prefix
, &last_prefix
, 0, 0);
10744 if(!prefix
&& last_prefix
){
10745 prefix
= last_prefix
;
10746 last_prefix
= NULL
;
10750 for(j
= 0; j
< WRAP_FL_QD(f
); j
++){
10751 if(WRAP_USE_CLR(f
)){
10753 && ps_global
->VAR_QUOTE1_FORE_COLOR
10754 && ps_global
->VAR_QUOTE1_BACK_COLOR
10755 && (col
= new_color_pair(ps_global
->VAR_QUOTE1_FORE_COLOR
,
10756 ps_global
->VAR_QUOTE1_BACK_COLOR
))
10757 && pico_is_good_colorpair(col
)){
10758 GF_COLOR_PUTC(f
, col
);
10760 else if((j
% 3) == 1
10761 && ps_global
->VAR_QUOTE2_FORE_COLOR
10762 && ps_global
->VAR_QUOTE2_BACK_COLOR
10763 && (col
= new_color_pair(ps_global
->VAR_QUOTE2_FORE_COLOR
,
10764 ps_global
->VAR_QUOTE2_BACK_COLOR
))
10765 && pico_is_good_colorpair(col
)){
10766 GF_COLOR_PUTC(f
, col
);
10768 else if((j
% 3) == 2
10769 && ps_global
->VAR_QUOTE3_FORE_COLOR
10770 && ps_global
->VAR_QUOTE3_BACK_COLOR
10771 && (col
= new_color_pair(ps_global
->VAR_QUOTE3_FORE_COLOR
,
10772 ps_global
->VAR_QUOTE3_BACK_COLOR
))
10773 && pico_is_good_colorpair(col
)){
10774 GF_COLOR_PUTC(f
, col
);
10777 free_color_pair(&col
);
10782 if(!WRAP_LV_FLD(f
)){
10783 if(!WRAP_FOR_CMPS(f
) && ps_global
->VAR_QUOTE_REPLACE_STRING
&& prefix
){
10784 for(i
= 0; prefix
[i
]; i
++)
10785 GF_PUTC_GLO(f
->next
, prefix
[i
]);
10786 f
->n
+= utf8_width(prefix
);
10788 else if(ps_global
->VAR_REPLY_STRING
10789 && (!strcmp(ps_global
->VAR_REPLY_STRING
, ">")
10790 || !strcmp(ps_global
->VAR_REPLY_STRING
, "\">\""))){
10791 GF_PUTC_GLO(f
->next
, '>');
10795 GF_PUTC_GLO(f
->next
, '>');
10796 GF_PUTC_GLO(f
->next
, ' ');
10801 GF_PUTC_GLO(f
->next
, '>');
10805 if(j
&& WRAP_LV_FLD(f
)){
10806 GF_PUTC_GLO(f
->next
, ' ');
10809 else if(j
&& last_prefix
){
10810 for(i
= 0; last_prefix
[i
]; i
++)
10811 GF_PUTC_GLO(f
->next
, last_prefix
[i
]);
10812 f
->n
+= utf8_width(last_prefix
);
10816 fs_give((void **)&prefix
);
10818 fs_give((void **)&last_prefix
);
10825 * function called from the outside to set
10826 * wrap filter's width option
10829 gf_wrap_filter_opt(int width
, int width_max
, int *margin
, int indent
, int flags
)
10833 /* NOTE: variables MUST be sanity checked before they get here */
10834 wrap
= (WRAP_S
*) fs_get(sizeof(WRAP_S
));
10835 memset(wrap
, 0, sizeof(WRAP_S
));
10836 wrap
->wrap_col
= width
;
10837 wrap
->wrap_max
= width_max
;
10838 wrap
->indent
= indent
;
10839 wrap
->margin_l
= (margin
) ? margin
[0] : 0;
10840 wrap
->margin_r
= (margin
) ? margin
[1] : 0;
10841 wrap
->tags
= (GFW_HANDLES
& flags
) == GFW_HANDLES
;
10842 wrap
->on_comma
= (GFW_ONCOMMA
& flags
) == GFW_ONCOMMA
;
10843 wrap
->flowed
= (GFW_FLOWED
& flags
) == GFW_FLOWED
;
10844 wrap
->leave_flowed
= (GFW_FLOW_RESULT
& flags
) == GFW_FLOW_RESULT
;
10845 wrap
->delsp
= (GFW_DELSP
& flags
) == GFW_DELSP
;
10846 wrap
->use_color
= (GFW_USECOLOR
& flags
) == GFW_USECOLOR
;
10847 wrap
->hdr_color
= (GFW_HDRCOLOR
& flags
) == GFW_HDRCOLOR
;
10848 wrap
->for_compose
= (GFW_FORCOMPOSE
& flags
) == GFW_FORCOMPOSE
;
10849 wrap
->handle_soft_hyphen
= (GFW_SOFTHYPHEN
& flags
) == GFW_SOFTHYPHEN
;
10851 return((void *) wrap
);
10856 gf_url_hilite_opt(URL_HILITE_S
*uh
, HANDLE_S
**handlesp
, int flags
)
10859 memset(uh
, 0, sizeof(URL_HILITE_S
));
10860 uh
->handlesp
= handlesp
;
10861 uh
->hdr_color
= (URH_HDRCOLOR
& flags
) == URH_HDRCOLOR
;
10864 return((void *) uh
);
10868 #define PF_QD(F) (((PREFLOW_S *)(F)->opt)->quote_depth)
10869 #define PF_QC(F) (((PREFLOW_S *)(F)->opt)->quote_count)
10870 #define PF_SIG(F) (((PREFLOW_S *)(F)->opt)->sig)
10872 typedef struct preflow_s
{
10879 * This would normally be handled in gf_wrap. If there is a possibility
10880 * that a url we want to recognize is cut in half by a soft newline we
10881 * want to fix that up by putting the halves back together. We do that
10882 * by deleting the soft newline and putting it all in one line. It will
10883 * still get wrapped later in gf_wrap. It isn't pretty with all the
10884 * goto's, but whatta ya gonna do?
10887 gf_preflow(FILTER_S
*f
, int flg
)
10889 GF_INIT(f
, f
->next
);
10891 if(flg
== GF_DATA
){
10892 register unsigned char c
;
10893 register int state
= f
->f1
;
10894 register int pending
= f
->f2
;
10896 while(GF_GETC(f
, c
)){
10910 GF_PUTC(f
->next
, c
);
10924 GF_PUTC(f
->next
, '\012');
10939 GF_PUTC(f
->next
, ' ');
10955 GF_PUTC(f
->next
, ' ');
10956 GF_PUTC(f
->next
, '\012');
10966 if(c
== '>'){ /* count quote level */
10971 done_counting_quotes
:
10972 if(c
== ' '){ /* eat stuffed space */
10977 done_with_stuffed_space
:
10978 if(c
== '-'){ /* look for signature */
10986 if(PF_QD(f
) == PF_QC(f
) && PF_SIG(f
) < 4){
10987 /* delete pending */
10989 PF_QD(f
) = PF_QC(f
);
10991 /* suppress quotes, too */
10996 * This should have been a hard new line
10997 * instead so leave out the trailing space.
10999 GF_PUTC(f
->next
, '\015');
11000 GF_PUTC(f
->next
, '\012');
11002 PF_QD(f
) = PF_QC(f
);
11005 else if(pending
== 1){
11006 GF_PUTC(f
->next
, '\015');
11007 GF_PUTC(f
->next
, '\012');
11008 PF_QD(f
) = PF_QC(f
);
11011 PF_QD(f
) = PF_QC(f
);
11016 while(PF_QC(f
)-- > 0)
11017 GF_PUTC(f
->next
, '>');
11025 GF_PUTC(f
->next
, '-');
11029 GF_PUTC(f
->next
, '-');
11030 GF_PUTC(f
->next
, '-');
11035 GF_PUTC(f
->next
, '-');
11036 GF_PUTC(f
->next
, '-');
11037 GF_PUTC(f
->next
, ' ');
11042 goto default_case
; /* to handle c */
11047 case FL_QLEV
: /* count quote level */
11051 goto done_counting_quotes
;
11055 case FL_STF
: /* eat stuffed space */
11056 goto done_with_stuffed_space
;
11059 case FL_SIG
: /* deal with sig indicator */
11061 case 1: /* saw '-' */
11065 goto done_with_sig
;
11069 case 2: /* saw '--' */
11073 goto done_with_sig
;
11077 case 3: /* saw '-- ' */
11079 PF_SIG(f
) = 4; /* it really is a sig line */
11081 goto done_with_sig
;
11091 GF_END(f
, f
->next
);
11093 else if(flg
== GF_EOD
){
11094 fs_give((void **) &f
->opt
);
11095 (void) GF_FLUSH(f
->next
);
11096 (*f
->next
->f
)(f
->next
, GF_EOD
);
11098 else if(flg
== GF_RESET
){
11101 pf
= (PREFLOW_S
*) fs_get(sizeof(*pf
));
11102 memset(pf
, 0, sizeof(*pf
));
11103 f
->opt
= (void *) pf
;
11105 f
->f1
= BOL
; /* state */
11106 f
->f2
= 0; /* pending */
11107 PF_QD(f
) = 0; /* quote depth */
11108 PF_QC(f
) = 0; /* quote count */
11109 PF_SIG(f
) = 0; /* sig level */
11117 * LINE PREFIX FILTER - insert given text at beginning of each
11122 #define GF_PREFIX_WRITE(s) { \
11123 register char *p; \
11124 if((p = (s)) != NULL) \
11126 GF_PUTC(f->next, *p++); \
11131 * the simple filter, prepends each line with the requested prefix.
11132 * if prefix is null, does nothing, and as with all filters, assumes
11133 * NVT end of lines.
11136 gf_prefix(FILTER_S
*f
, int flg
)
11138 GF_INIT(f
, f
->next
);
11140 if(flg
== GF_DATA
){
11141 register unsigned char c
;
11142 register int state
= f
->f1
;
11143 register int first
= f
->f2
;
11145 while(GF_GETC(f
, c
)){
11147 if(first
){ /* write initial prefix!! */
11148 first
= 0; /* but just once */
11149 GF_PREFIX_WRITE((char *) f
->opt
);
11153 * State == 0 is the starting state and the usual state.
11154 * State == 1 means we saw a CR and haven't acted on it yet.
11155 * We are looking for a LF to get the CRLF end of line.
11156 * However, we also treat bare CR and bare LF as if they
11157 * were CRLF sequences. What else could it mean in text?
11158 * This filter is only used for text so that is probably
11159 * a reasonable interpretation of the bad input.
11161 if(c
== '\015'){ /* CR */
11162 if(state
){ /* Treat pending CR as endofline, */
11163 GF_PUTC(f
->next
, '\015'); /* and remain in saw-a-CR state. */
11164 GF_PUTC(f
->next
, '\012');
11165 GF_PREFIX_WRITE((char *) f
->opt
);
11171 else if(c
== '\012'){ /* LF */
11172 GF_PUTC(f
->next
, '\015'); /* Got either a CRLF or a bare LF, */
11173 GF_PUTC(f
->next
, '\012'); /* treat both as if a CRLF. */
11174 GF_PREFIX_WRITE((char *) f
->opt
);
11177 else{ /* any other character */
11179 GF_PUTC(f
->next
, '\015'); /* Treat pending CR as endofline. */
11180 GF_PUTC(f
->next
, '\012');
11181 GF_PREFIX_WRITE((char *) f
->opt
);
11185 GF_PUTC(f
->next
, c
);
11189 f
->f1
= state
; /* save state for next chunk of data */
11191 GF_END(f
, f
->next
);
11193 else if(flg
== GF_EOD
){
11194 (void) GF_FLUSH(f
->next
);
11195 (*f
->next
->f
)(f
->next
, GF_EOD
);
11197 else if(flg
== GF_RESET
){
11198 dprint((9, "-- gf_reset prefix\n"));
11200 f
->f2
= 1; /* nothing written yet */
11206 * function called from the outside to set
11207 * prefix filter's prefix string
11210 gf_prefix_opt(char *prefix
)
11212 return((void *) prefix
);
11217 * LINE TEST FILTER - accumulate lines and offer each to the provided
11221 typedef struct _linetest_s
{
11227 /* accumulator growth increment */
11228 #define LINE_TEST_BLOCK 1024
11230 #define GF_LINE_TEST_EOB(f) \
11231 ((f)->line + ((f)->f2 - 1))
11233 #define GF_LINE_TEST_ADD(f, c) \
11236 f->f2 += LINE_TEST_BLOCK; \
11237 fs_resize((void **)&f->line, \
11238 (size_t) f->f2 * sizeof(char)); \
11239 eobuf = GF_LINE_TEST_EOB(f); \
11240 p = eobuf - LINE_TEST_BLOCK; \
11245 #define GF_LINE_TEST_TEST(F, D) \
11248 register char *cp; \
11250 LT_INS_S *ins = NULL, *insp; \
11252 (D) = (*((LINETEST_S *) (F)->opt)->f)((F)->n++, \
11254 ((LINETEST_S *) (F)->opt)->local); \
11258 fs_give((void **) &(F)->line); \
11260 fs_give((void **) &(F)->opt); \
11261 gf_error(_("translation error")); \
11264 for(insp = ins, cp = (F)->line; cp < p; ){ \
11265 if(insp && cp == insp->where){ \
11266 if(insp->len > 0){ \
11267 for(l = 0; l < insp->len; l++){ \
11268 c = (unsigned char) insp->text[l]; \
11269 GF_PUTC((F)->next, c); \
11271 insp = insp->next; \
11273 } else if(insp->len < 0){ \
11275 insp = insp->next; \
11279 GF_PUTC((F)->next, *cp); \
11283 for(l = 0; l < insp->len; l++){ \
11284 c = (unsigned char) insp->text[l]; \
11285 GF_PUTC((F)->next, c); \
11287 insp = insp->next; \
11289 gf_line_test_free_ins(&ins); \
11296 * this simple filter accumulates characters until a newline, offers it
11297 * to the provided test function, and then passes it on. It assumes
11301 gf_line_test(FILTER_S
*f
, int flg
)
11303 register char *p
= f
->linep
;
11304 register char *eobuf
= GF_LINE_TEST_EOB(f
);
11305 GF_INIT(f
, f
->next
);
11307 if(flg
== GF_DATA
){
11308 register unsigned char c
;
11309 register int state
= f
->f1
;
11311 while(GF_GETC(f
, c
)){
11318 GF_LINE_TEST_TEST(f
, done
);
11322 if(done
== 2) /* skip this line! */
11325 GF_PUTC(f
->next
, '\015');
11326 GF_PUTC(f
->next
, '\012');
11328 * if the line tester returns TRUE, it's
11329 * telling us its seen enough and doesn't
11330 * want to see any more. Remove ourself
11331 * from the pipeline...
11334 if(gf_master
== f
){
11335 gf_master
= f
->next
;
11340 for(fprev
= gf_master
;
11341 fprev
&& fprev
->next
!= f
;
11342 fprev
= fprev
->next
)
11345 if(fprev
) /* wha??? */
11346 fprev
->next
= f
->next
;
11351 while(GF_GETC(f
, c
)) /* pass input */
11352 GF_PUTC(f
->next
, c
);
11354 (void) GF_FLUSH(f
->next
); /* and drain queue */
11355 fs_give((void **)&f
->line
);
11356 fs_give((void **)&f
); /* wax our data */
11362 else /* add CR to buffer */
11363 GF_LINE_TEST_ADD(f
, '\015');
11364 } /* fall thru to handle 'c' */
11366 if(c
== '\015') /* newline? */
11369 GF_LINE_TEST_ADD(f
, c
);
11373 GF_END(f
, f
->next
);
11375 else if(flg
== GF_EOD
){
11378 GF_LINE_TEST_TEST(f
, i
); /* examine remaining data */
11379 fs_give((void **) &f
->line
); /* free line buffer */
11380 fs_give((void **) &f
->opt
); /* free test struct */
11381 (void) GF_FLUSH(f
->next
);
11382 (*f
->next
->f
)(f
->next
, GF_EOD
);
11384 else if(flg
== GF_RESET
){
11385 dprint((9, "-- gf_reset line_test\n"));
11386 f
->f1
= 0; /* state */
11387 f
->n
= 0L; /* line number */
11388 f
->f2
= LINE_TEST_BLOCK
; /* size of alloc'd line */
11389 f
->line
= p
= (char *) fs_get(f
->f2
* sizeof(char));
11397 * function called from the outside to operate on accumulated line.
11400 gf_line_test_opt(linetest_t test_f
, void *local
)
11404 ltp
= (LINETEST_S
*) fs_get(sizeof(LINETEST_S
));
11405 memset(ltp
, 0, sizeof(LINETEST_S
));
11407 ltp
->local
= local
;
11408 return((void *) ltp
);
11414 gf_line_test_new_ins(LT_INS_S
**ins
, char *p
, char *s
, int n
)
11416 *ins
= (LT_INS_S
*) fs_get(sizeof(LT_INS_S
));
11417 if(((*ins
)->len
= n
) > 0)
11418 strncpy((*ins
)->text
= (char *) fs_get(n
* sizeof(char)), s
, n
);
11420 (*ins
)->text
= NULL
;
11423 (*ins
)->next
= NULL
;
11424 return(&(*ins
)->next
);
11429 gf_line_test_free_ins(LT_INS_S
**ins
)
11433 gf_line_test_free_ins(&(*ins
)->next
);
11436 fs_give((void **) &(*ins
)->text
);
11438 fs_give((void **) ins
);
11444 * PREPEND EDITORIAL FILTER - conditionally prepend output text
11445 * with editorial comment
11448 typedef struct _preped_s
{
11455 * gf_prepend_editorial - accumulate filtered text and prepend its
11456 * output with given text
11461 gf_prepend_editorial(FILTER_S
*f
, int flg
)
11463 GF_INIT(f
, f
->next
);
11465 if(flg
== GF_DATA
){
11466 register unsigned char c
;
11468 while(GF_GETC(f
, c
)){
11469 so_writec(c
, (STORE_S
*) f
->data
);
11472 GF_END(f
, f
->next
);
11474 else if(flg
== GF_EOD
){
11477 if(!((PREPED_S
*)(f
)->opt
)->f
|| (*((PREPED_S
*)(f
)->opt
)->f
)()){
11478 char *p
= ((PREPED_S
*)(f
)->opt
)->text
;
11480 for( ; p
&& *p
; p
++)
11481 GF_PUTC(f
->next
, *p
);
11484 so_seek((STORE_S
*) f
->data
, 0L, 0);
11485 while(so_readc(&c
, (STORE_S
*) f
->data
)){
11486 GF_PUTC(f
->next
, c
);
11489 so_give((STORE_S
**) &f
->data
);
11490 fs_give((void **) &f
->opt
);
11491 (void) GF_FLUSH(f
->next
);
11492 (*f
->next
->f
)(f
->next
, GF_EOD
);
11494 else if(flg
== GF_RESET
){
11495 dprint((9, "-- gf_reset line_test\n"));
11496 f
->data
= (void *) so_get(CharStar
, NULL
, EDIT_ACCESS
);
11502 * function called from the outside to setup prepending editorial
11506 gf_prepend_editorial_opt(prepedtest_t test_f
, char *text
)
11510 pep
= (PREPED_S
*) fs_get(sizeof(PREPED_S
));
11511 memset(pep
, 0, sizeof(PREPED_S
));
11514 return((void *) pep
);
11519 * Network virtual terminal to local newline convention filter
11522 gf_nvtnl_local(FILTER_S
*f
, int flg
)
11524 GF_INIT(f
, f
->next
);
11526 if(flg
== GF_DATA
){
11527 register unsigned char c
;
11528 register int state
= f
->f1
;
11530 while(GF_GETC(f
, c
)){
11534 GF_PUTC(f
->next
, '\012');
11538 GF_PUTC(f
->next
, '\015');
11539 /* fall thru to deal with 'c' */
11545 GF_PUTC(f
->next
, c
);
11549 GF_END(f
, f
->next
);
11551 else if(flg
== GF_EOD
){
11552 (void) GF_FLUSH(f
->next
);
11553 (*f
->next
->f
)(f
->next
, GF_EOD
);
11555 else if(flg
== GF_RESET
){
11556 dprint((9, "-- gf_reset nvtnl_local\n"));
11563 * local to network newline convention filter
11566 gf_local_nvtnl(FILTER_S
*f
, int flg
)
11568 GF_INIT(f
, f
->next
);
11570 if(flg
== GF_DATA
){
11571 register unsigned char c
;
11573 while(GF_GETC(f
, c
)){
11575 GF_PUTC(f
->next
, '\015');
11576 GF_PUTC(f
->next
, '\012');
11578 else if(c
!= '\015') /* do not copy isolated \015 into source */
11579 GF_PUTC(f
->next
, c
);
11582 GF_END(f
, f
->next
);
11584 else if(flg
== GF_EOD
){
11585 (void) GF_FLUSH(f
->next
);
11586 (*f
->next
->f
)(f
->next
, GF_EOD
);
11589 dprint((9, "-- gf_reset local_nvtnl\n"));
11596 free_filter_module_globals(void)
11598 FILTER_S
*flt
, *fltn
= gf_master
;
11600 while((flt
= fltn
) != NULL
){ /* free list of old filters */
11602 fs_give((void **)&flt
);