1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
2 *@ Command input, lexing and evaluation, resource file loading and `source'ing.
3 *@ TODO PS_ROBOT requires yet PS_SOURCING, which REALLY sucks.
4 *@ TODO Commands and ghosts deserve a hashmap. Or so.
6 * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
7 * Copyright (c) 2012 - 2016 Steffen (Daode) Nurpmeso <steffen@sdaoden.eu>.
10 * Copyright (c) 1980, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 #define n_FILE lex_input
40 #ifndef HAVE_AMALGAMATION
44 enum a_lex_input_flags
{
46 a_LEX_FREE
= 1<<0, /* Structure was allocated, free() it */
47 a_LEX_PIPE
= 1<<1, /* Open on a pipe */
48 a_LEX_MACRO
= 1<<2, /* Running a macro */
49 a_LEX_MACRO_FREE_DATA
= 1<<3, /* Lines are allocated, free(3) once done */
50 a_LEX_MACRO_X_OPTION
= 1<<4, /* Macro indeed command line -X option */
51 a_LEX_MACRO_CMD
= 1<<5, /* Macro indeed single-line: ~:COMMAND */
53 a_LEX_SUPER_MACRO
= 1<<16 /* *Not* inheriting PS_SOURCING state */
57 char const *lc_name
; /* Name of command */
58 int (*lc_func
)(void*); /* Implementor of command */
59 enum argtype lc_argtype
; /* Arglist type (see below) */
60 si16_t lc_msgflag
; /* Required flags of msgs */
61 si16_t lc_msgmask
; /* Relevant flags of msgs */
62 #ifdef HAVE_DOCSTRINGS
63 char const *lc_doc
; /* One line doc for command */
66 /* Yechh, can't initialize unions */
67 #define lc_minargs lc_msgflag /* Minimum argcount for RAWLIST */
68 #define lc_maxargs lc_msgmask /* Max argcount for RAWLIST */
71 struct a_lex_ghost
*lg_next
;
72 struct str lg_cmd
; /* Data follows after .lg_name */
73 char lg_name
[n_VFIELD_SIZE(0)];
76 struct a_lex_eval_ctx
{
77 struct str le_line
; /* The terminated data to _evaluate() */
78 ui32_t le_line_size
; /* May be used to store line memory size */
79 bool_t le_is_recursive
; /* Evaluation in evaluation? (collect ~:) */
81 bool_t le_add_history
; /* Add command to history (TRUM1=gabby)? */
82 char const *le_new_content
; /* History: reenter line, start with this */
85 struct a_lex_input_stack
{
86 struct a_lex_input_stack
*li_outer
;
87 FILE *li_file
; /* File we were in */
88 void *li_cond
; /* Saved state of conditional stack */
89 ui32_t li_flags
; /* enum a_lex_input_flags */
90 ui32_t li_loff
; /* Pseudo (macro): index in .li_lines */
91 char **li_lines
; /* Pseudo content, lines unfolded */
92 void (*li_macro_on_finalize
)(void *);
93 void *li_macro_finalize_arg
;
94 char li_autorecmem
[n_MEMORY_AUTOREC_TYPE_SIZEOF
];
95 sigjmp_buf li_cmdrec_jmp
; /* TODO one day... for command_recursive */
96 char li_name
[n_VFIELD_SIZE(0)]; /* Name of file or macro */
98 n_CTA(n_MEMORY_AUTOREC_TYPE_SIZEOF
% sizeof(void*) == 0,
99 "Inacceptible size of structure buffer");
101 static sighandler_type a_lex_oldpipe
;
102 static struct a_lex_ghost
*a_lex_ghosts
;
103 /* a_lex_cmd_tab[] after fun protos */
106 static struct a_lex_input_stack
*a_lex_input
;
108 static sigjmp_buf a_lex_srbuf
; /* TODO GET RID */
110 /* Isolate the command from the arguments */
111 static char *a_lex_isolate(char const *comm
);
113 /* Command ghost handling */
114 static int a_lex_c_ghost(void *v
);
115 static int a_lex_c_unghost(void *v
);
117 /* Print a list of all commands */
118 static int a_lex_c_list(void *v
);
120 static int a_lex__pcmd_cmp(void const *s1
, void const *s2
);
122 /* `help' / `?' command */
123 static int a_lex_c_help(void *v
);
126 static int a_lex_c_quit(void *v
);
128 /* Print the binaries version number */
129 static int a_lex_c_version(void *v
);
131 static int a_lex__version_cmp(void const *s1
, void const *s2
);
133 /* PS_STATE_PENDMASK requires some actions */
134 static void a_lex_update_pstate(void);
136 /* Evaluate a single command.
137 * .le_add_history and .le_new_content will be updated upon success.
138 * Command functions return 0 for success, 1 for error, and -1 for abort.
139 * 1 or -1 aborts a load or source, a -1 aborts the interactive command loop */
140 static int a_lex_evaluate(struct a_lex_eval_ctx
*evp
);
142 /* Get first-fit, or NULL */
143 static struct a_lex_cmd
const *a_lex__firstfit(char const *comm
);
145 /* Branch here on hangup signal and simulate "exit" */
146 static void a_lex_hangup(int s
);
148 /* The following gets called on receipt of an interrupt. Close all open files
149 * except 0, 1, 2, and the temporary. Also, unstack all source files */
150 static void a_lex_onintr(int s
);
152 /* Pop the current input back to the previous level. Update the program state.
153 * If the argument is TRUM1 then we don't alert and error out if the stack
154 * doesn't exist at all */
155 static void a_lex_unstack(bool_t eval_error
);
157 /* `source' and `source_if' (if silent_error: no pipes allowed, then) */
158 static bool_t
a_lex_source_file(char const *file
, bool_t silent_error
);
160 /* System resource file load()ing or -X command line option array traversal */
161 static bool_t
a_lex_load(struct a_lex_input_stack
*lip
);
163 /* A simplified command loop for recursed state machines */
164 static bool_t
a_commands_recursive(enum n_lexinput_flags lif
);
166 /* List of all commands, and list of commands which are specially treated
167 * and deduced in _evaluate(), but we need a list for _c_list() and
168 * print_comm_docstr() */
169 #ifdef HAVE_DOCSTRINGS
174 static struct a_lex_cmd
const a_lex_cmd_tab
[] = {
177 a_lex_special_cmd_tab
[] = {
179 DS(N_("Comment command: ignore remaining (continuable) line")) },
181 DS(N_("Print out the preceding message")) }
186 a_lex_isolate(char const *comm
){
188 while(*comm
!= '\0' &&
189 strchr("~|? \t0123456789&%@$^.:/-+*'\",;(`", *comm
) == NULL
)
192 return n_UNCONST(comm
);
196 a_lex_c_ghost(void *v
){
197 struct a_lex_ghost
*lgp
, *gp
;
209 if((fp
= Ftmp(NULL
, "ghost", OF_RDWR
| OF_UNLINK
| OF_REGISTER
)) == NULL
)
212 for(i
= 0, gp
= a_lex_ghosts
; gp
!= NULL
; gp
= gp
->lg_next
)
213 fprintf(fp
, "wysh ghost %s %s\n",
214 gp
->lg_name
, n_shexp_quote_cp(gp
->lg_cmd
.s
, TRU1
));
217 page_or_print(fp
, i
);
223 /* Verify the ghost name is a valid one */
224 if(*argv
[0] == '\0' || *a_lex_isolate(argv
[0]) != '\0'){
225 n_err(_("`ghost': can't canonicalize %s\n"),
226 n_shexp_quote_cp(argv
[0], FAL0
));
231 /* Show command of single ghost? */
233 for(gp
= a_lex_ghosts
; gp
!= NULL
; gp
= gp
->lg_next
)
234 if(!strcmp(argv
[0], gp
->lg_name
)){
235 printf("wysh ghost %s %s\n",
236 gp
->lg_name
, n_shexp_quote_cp(gp
->lg_cmd
.s
, TRU1
));
239 n_err(_("`ghost': no such alias: %s\n"), argv
[0]);
244 /* Define command for ghost: verify command content */
245 for(cl
= 0, i
= 1; (cp
= n_UNCONST(argv
[i
])) != NULL
; ++i
)
247 cl
+= strlen(cp
) +1; /* SP or NUL */
249 n_err(_("`ghost': empty command arguments after %s\n"), argv
[0]);
254 /* If the ghost already exists, recreate */
255 for(lgp
= NULL
, gp
= a_lex_ghosts
; gp
!= NULL
; lgp
= gp
, gp
= gp
->lg_next
)
256 if(!strcmp(gp
->lg_name
, argv
[0])){
258 lgp
->lg_next
= gp
->lg_next
;
260 a_lex_ghosts
= gp
->lg_next
;
265 nl
= strlen(argv
[0]) +1;
266 gp
= smalloc(sizeof(*gp
) - n_VFIELD_SIZEOF(struct a_lex_ghost
, lg_name
) +
268 gp
->lg_next
= a_lex_ghosts
;
270 memcpy(gp
->lg_name
, argv
[0], nl
);
271 cp
= gp
->lg_cmd
.s
= gp
->lg_name
+ nl
;
274 while(*++argv
!= NULL
)
275 if((i
= strlen(*argv
)) > 0){
276 memcpy(cp
, *argv
, i
);
287 a_lex_c_unghost(void *v
){
288 struct a_lex_ghost
*lgp
, *gp
;
289 char const **argv
, *cp
;
296 while((cp
= *argv
++) != NULL
){
297 if(cp
[0] == '*' && cp
[1] == '\0'){
298 while((gp
= a_lex_ghosts
) != NULL
){
299 a_lex_ghosts
= gp
->lg_next
;
303 for(lgp
= NULL
, gp
= a_lex_ghosts
; gp
!= NULL
;
304 lgp
= gp
, gp
= gp
->lg_next
)
305 if(!strcmp(gp
->lg_name
, cp
)){
307 lgp
->lg_next
= gp
->lg_next
;
309 a_lex_ghosts
= gp
->lg_next
;
313 n_err(_("`unghost': no such alias: %s\n"),
314 n_shexp_quote_cp(cp
, FAL0
));
324 a_lex_c_list(void *v
){
326 struct a_lex_cmd
const **cpa
, *cp
, **cursor
;
330 i
= n_NELEM(a_lex_cmd_tab
) + n_NELEM(a_lex_special_cmd_tab
) +1;
331 cpa
= salloc(sizeof(cp
) * i
);
333 for(i
= 0; i
< n_NELEM(a_lex_cmd_tab
); ++i
)
334 cpa
[i
] = &a_lex_cmd_tab
[i
];
338 for(j
= 0; j
< n_NELEM(a_lex_special_cmd_tab
); ++i
, ++j
)
339 cpa
[i
] = &a_lex_special_cmd_tab
[j
];
347 qsort(cpa
, i
, sizeof(xcp
), &a_lex__pcmd_cmp
);
350 if((fp
= Ftmp(NULL
, "list", OF_RDWR
| OF_UNLINK
| OF_REGISTER
)) == NULL
)
353 fprintf(fp
, _("Commands are:\n"));
355 for(i
= 0, cursor
= cpa
; (cp
= *cursor
++) != NULL
;){
356 if(cp
->lc_func
== &c_cmdnotsupp
)
358 if(options
& OPT_D_V
){
361 switch(cp
->lc_argtype
& ARG_ARGMASK
){
362 case ARG_MSGLIST
: argt
= N_("message-list"); break;
363 case ARG_STRLIST
: argt
= N_("a \"string\""); break;
364 case ARG_RAWLIST
: argt
= N_("old-style quoting"); break;
365 case ARG_NOLIST
: argt
= N_("no arguments"); break;
366 case ARG_NDMLIST
: argt
= N_("message-list (without a default)"); break;
367 case ARG_WYSHLIST
: argt
= N_("sh(1)ell-style quoting"); break;
368 default: argt
= N_("`wysh' for sh(1)ell-style quoting"); break;
370 #ifdef HAVE_DOCSTRINGS
371 fprintf(fp
, _("`%s'. Argument type: %s.\n\t%s\n"),
372 cp
->lc_name
, V_(argt
), V_(cp
->lc_doc
));
375 fprintf(fp
, "`%s' (%s)\n", cp
->lc_name
, argt
);
379 size_t j
= strlen(cp
->lc_name
) + 2;
386 fprintf(fp
, (*cursor
!= NULL
? "%s, " : "%s\n"), cp
->lc_name
);
391 page_or_print(fp
, l
);
399 a_lex__pcmd_cmp(void const *s1
, void const *s2
){
400 struct a_lex_cmd
const * const *cp1
, * const *cp2
;
406 rv
= strcmp((*cp1
)->lc_name
, (*cp2
)->lc_name
);
412 a_lex_c_help(void *v
){
417 /* Help for a single command? */
418 if((arg
= *(char**)v
) != NULL
){
419 struct a_lex_ghost
const *gp
;
420 struct a_lex_cmd
const *cp
, *cpmax
;
422 /* Ghosts take precedence */
423 for(gp
= a_lex_ghosts
; gp
!= NULL
; gp
= gp
->lg_next
)
424 if(!strcmp(arg
, gp
->lg_name
)){
425 printf("%s -> ", arg
);
430 cpmax
= &(cp
= a_lex_cmd_tab
)[n_NELEM(a_lex_cmd_tab
)];
432 for(; PTRCMP(cp
, <, cpmax
); ++cp
){
433 #ifdef HAVE_DOCSTRINGS
434 # define a_DS V_(cp->lc_doc)
436 # define a_DS n_empty
438 if(!strcmp(arg
, cp
->lc_name
))
439 printf("%s: %s", arg
, a_DS
);
440 else if(is_prefix(arg
, cp
->lc_name
))
441 printf("%s (%s): %s", arg
, cp
->lc_name
, a_DS
);
445 if(options
& OPT_D_V
){
448 switch(cp
->lc_argtype
& ARG_ARGMASK
){
449 case ARG_MSGLIST
: atp
= N_("message-list"); break;
450 case ARG_STRLIST
: atp
= N_("a \"string\""); break;
451 case ARG_RAWLIST
: atp
= N_("old-style quoting"); break;
452 case ARG_NOLIST
: atp
= N_("no arguments"); break;
453 case ARG_NDMLIST
: atp
= N_("message-list (no default)"); break;
454 case ARG_WYSHLIST
: atp
= N_("sh(1)ell-style quoting"); break;
455 default: atp
= N_("`wysh' for sh(1)ell-style quoting"); break;
457 #ifdef HAVE_DOCSTRINGS
458 printf(_("\n\tArgument type: %s"), V_(atp
));
460 printf(_("argument type: %s"), V_(atp
));
469 if(PTRCMP(cpmax
, ==, &a_lex_cmd_tab
[n_NELEM(a_lex_cmd_tab
)])){
470 cpmax
= &(cp
= a_lex_special_cmd_tab
)[n_NELEM(a_lex_special_cmd_tab
)];
475 printf("%s\n", n_shexp_quote_cp(arg
, TRU1
));
478 n_err(_("Unknown command: `%s'\n"), arg
);
482 /* Very ugly, but take care for compiler supported string lengths :( */
483 fputs(progname
, stdout
);
485 " commands -- <msglist> denotes message specifications,\n"
486 "e.g., 1-5, :n or ., separated by spaces:\n"), stdout
);
489 "type <msglist> type (alias: `print') messages (honour `retain' etc.)\n"
490 "Type <msglist> like `type' but always show all headers\n"
491 "next goto and type next message\n"
492 "from <msglist> (search and) print header summary for the given list\n"
493 "headers header summary for messages surrounding \"dot\"\n"
494 "delete <msglist> delete messages (can be `undelete'd)\n"),
499 "save <msglist> folder append messages to folder and mark as saved\n"
500 "copy <msglist> folder like `save', but don't mark them (`move' moves)\n"
501 "write <msglist> file write message contents to file (prompts for parts)\n"
502 "Reply <msglist> reply to message senders only\n"
503 "reply <msglist> like `Reply', but address all recipients\n"
504 "Lreply <msglist> forced mailing-list `reply' (see `mlist')\n"),
509 "mail <recipients> compose a mail for the given recipients\n"
510 "file folder change to another mailbox\n"
511 "File folder like `file', but open readonly\n"
512 "quit quit and apply changes to the current mailbox\n"
513 "xit or exit like `quit', but discard changes\n"
514 "!shell command shell escape\n"
515 "list [<anything>] all available commands [in search order]\n"),
518 rv
= (ferror(stdout
) != 0);
526 a_lex_c_quit(void *v
){
530 /* If we are PS_SOURCING, then return 1 so _evaluate() can handle it.
531 * Otherwise return -1 to abort command loop */
538 a_lex_c_version(void *v
){
541 char const *cp
, **arr
;
546 printf(_("%s version %s\nFeatures included (+) or not (-)\n"),
547 uagent
, ok_vlook(version
));
549 /* *features* starts with dummy byte to avoid + -> *folder* expansions */
550 i
= strlen(cp
= &ok_vlook(features
)[1]) +1;
554 arr
= salloc(sizeof(cp
) * VAL_FEATURES_CNT
);
555 for(longest
= 0, i
= 0; (cp
= n_strsep(&iop
, ',', TRU1
)) != NULL
; ++i
){
558 longest
= n_MAX(longest
, (int)i2
);
560 qsort(arr
, i
, sizeof(cp
), &a_lex__version_cmp
);
562 for(++longest
, i2
= 0; i
-- > 0;){
564 printf("%-*s ", longest
, cp
);
566 if(UICMP(z
, ++i2
+ longest
, >=, scrnwidth
) || i
== 0){
572 if((rv
= ferror(stdout
) != 0))
579 a_lex__version_cmp(void const *s1
, void const *s2
){
580 char const * const *cp1
, * const *cp2
;
586 rv
= strcmp(&(*cp1
)[1], &(*cp2
)[1]);
592 a_lex_update_pstate(void){
595 if(pstate
& PS_SIGWINCH_PEND
){
598 snprintf(buf
, sizeof buf
, "%d", scrnwidth
);
599 ok_vset(COLUMNS
, buf
);
600 snprintf(buf
, sizeof buf
, "%d", scrnheight
);
604 pstate
&= ~PS_PSTATE_PENDMASK
;
609 a_lex_evaluate(struct a_lex_eval_ctx
*evp
){
610 /* xxx old style(9), but also old code */
612 char _wordbuf
[2], *arglist
[MAXARGC
], *cp
, *word
;
613 struct a_lex_ghost
*gp
;
614 struct a_lex_cmd
const *cmd
;
623 line
= evp
->le_line
; /* XXX don't change original (buffer pointer) */
624 assert(line
.s
[line
.l
] == '\0');
625 evp
->le_add_history
= FAL0
;
626 evp
->le_new_content
= NULL
;
628 /* Command ghosts that refer to shell commands or macro expansion restart */
631 /* Strip the white space away from end and beginning of command */
635 for(cp
= &line
.s
[i
-1]; spacechar(*cp
); --cp
)
639 for(cp
= line
.s
; spacechar(*cp
); ++cp
)
641 line
.l
-= PTR2SIZE(cp
- line
.s
);
643 /* Ignore null commands (comments) */
647 /* Handle ! differently to get the correct lexical conventions */
651 /* Isolate the actual command; since it may not necessarily be
652 * separated from the arguments (as in `p1') we need to duplicate it to
653 * be able to create a NUL terminated version.
654 * We must be aware of several special one letter commands here */
655 else if((cp
= a_lex_isolate(cp
)) == arglist
[0] &&
656 (*cp
== '|' || *cp
== '~' || *cp
== '?'))
658 c
= (int)PTR2SIZE(cp
- arglist
[0]);
660 word
= UICMP(z
, c
, <, sizeof _wordbuf
) ? _wordbuf
: salloc(c
+1);
661 memcpy(word
, arglist
[0], c
);
664 /* Look up the command; if not found, bitch.
665 * Normally, a blank command would map to the first command in the
666 * table; while PS_SOURCING, however, we ignore blank lines to eliminate
667 * confusion; act just the same for ghosts */
669 if((pstate
& PS_ROBOT
) || gp
!= NULL
)
671 cmd
= a_lex_cmd_tab
+ 0;
675 /* XXX It may be the argument parse adjuster */
676 if(!wysh
&& c
== sizeof("wysh") -1 && !asccasecmp(word
, "wysh")){
682 /* If this is the first evaluation, check command ghosts */
684 /* TODO relink list head, so it's sorted on usage over time?
685 * TODO in fact, there should be one hashmap over all commands and ghosts
686 * TODO so that the lookup could be made much more efficient than it is
687 * TODO now (two adjacent list searches! */
688 for(gp
= a_lex_ghosts
; gp
!= NULL
; gp
= gp
->lg_next
)
689 if(!strcmp(word
, gp
->lg_name
)){
694 line
.s
= salloc(i
+ line
.l
+1);
695 memcpy(line
.s
, gp
->lg_cmd
.s
, i
);
696 memcpy(line
.s
+ i
, cp
, line
.l
);
697 line
.s
[i
+= line
.l
] = '\0';
700 line
.s
= gp
->lg_cmd
.s
;
701 line
.l
= gp
->lg_cmd
.l
;
707 if((cmd
= a_lex__firstfit(word
)) == NULL
|| cmd
->lc_func
== &c_cmdnotsupp
){
710 if(!(s
= condstack_isskip()) || (options
& OPT_D_V
))
711 n_err(_("Unknown command%s: `%s'\n"),
712 (s
? _(" (ignored due to `if' condition)") : n_empty
), word
);
722 /* See if we should execute the command -- if a conditional we always
723 * execute it, otherwise, check the state of cond */
725 if(!(cmd
->lc_argtype
& ARG_F
) && condstack_isskip())
728 /* Process the arguments to the command, depending on the type it expects */
729 if(!(cmd
->lc_argtype
& ARG_M
) && (options
& OPT_SENDMODE
)){
730 n_err(_("May not execute `%s' while sending\n"), cmd
->lc_name
);
733 if((cmd
->lc_argtype
& ARG_S
) && !(pstate
& PS_STARTED
)){
734 n_err(_("May not execute `%s' during startup\n"), cmd
->lc_name
);
737 if((cmd
->lc_argtype
& ARG_I
) &&
738 !(options
& (OPT_INTERACTIVE
| OPT_BATCH_FLAG
))){
739 n_err(_("May not execute `%s' unless interactive or in batch mode\n"),
743 if((cmd
->lc_argtype
& ARG_R
) && (pstate
& PS_RECURSED
)){
744 n_err(_("Cannot invoke `%s' when in recursed mode (e.g., composing)\n"),
749 if((cmd
->lc_argtype
& ARG_W
) && !(mb
.mb_perm
& MB_DELE
)){
750 n_err(_("May not execute `%s' -- message file is read only\n"),
754 if((cmd
->lc_argtype
& ARG_A
) && mb
.mb_type
== MB_VOID
){
755 n_err(_("Cannot execute `%s' without active mailbox\n"), cmd
->lc_name
);
759 if(cmd
->lc_argtype
& ARG_O
)
760 OBSOLETE2(_("this command will be removed"), cmd
->lc_name
);
761 if(cmd
->lc_argtype
& ARG_V
)
762 temporary_arg_v_store
= NULL
;
764 if(wysh
&& (cmd
->lc_argtype
& ARG_ARGMASK
) != ARG_WYRALIST
)
765 n_err(_("`wysh' prefix doesn't affect `%s'\n"), cmd
->lc_name
);
766 /* TODO v15: strip PS_ARGLIST_MASK off, just in case the actual command
767 * TODO doesn't use any of those list commands which strip this mask,
768 * TODO and for now we misuse bits for checking relation to history;
769 * TODO argument state should be property of a per-command carrier instead */
770 pstate
&= ~PS_ARGLIST_MASK
;
771 switch(cmd
->lc_argtype
& ARG_ARGMASK
){
773 /* Message list defaulting to nearest forward legal message */
776 if((c
= getmsglist(cp
, n_msgvec
, cmd
->lc_msgflag
)) < 0)
779 if((n_msgvec
[0] = first(cmd
->lc_msgflag
, cmd
->lc_msgmask
)) != 0)
782 if(n_msgvec
[0] == 0){
783 if(!(pstate
& PS_HOOK_MASK
))
784 printf(_("No applicable messages\n"));
787 e
= (*cmd
->lc_func
)(n_msgvec
);
791 /* Message list with no defaults, but no error if none exist */
792 if(n_msgvec
== NULL
){
794 n_err(_("Invalid use of message list\n"));
797 if((c
= getmsglist(cp
, n_msgvec
, cmd
->lc_msgflag
)) < 0)
799 e
= (*cmd
->lc_func
)(n_msgvec
);
803 /* Just the straight string, with leading blanks removed */
804 while(whitechar(*cp
))
806 e
= (*cmd
->lc_func
)(cp
);
821 if((c
= getrawlist((c
!= 0), arglist
, n_NELEM(arglist
), cp
, line
.l
)) < 0){
822 n_err(_("Invalid argument list\n"));
825 if(c
< cmd
->lc_minargs
){
826 n_err(_("`%s' requires at least %d arg(s)\n"),
827 cmd
->lc_name
, cmd
->lc_minargs
);
831 if(c
> cmd
->lc_maxargs
){
832 n_err(_("`%s' takes no more than %d arg(s)\n"),
833 cmd
->lc_name
, cmd
->lc_maxargs
);
837 e
= (*cmd
->lc_func
)(arglist
);
841 /* Just the constant zero, for exiting, eg. */
842 e
= (*cmd
->lc_func
)(0);
846 DBG( n_panic(_("Implementation error: unknown argument type: %d"),
847 cmd
->lc_argtype
& ARG_ARGMASK
); )
851 if(e
== 0 && (cmd
->lc_argtype
& ARG_V
) &&
852 (cp
= temporary_arg_v_store
) != NULL
){
853 temporary_arg_v_store
= NULL
;
854 evp
->le_new_content
= cp
;
857 if(!(cmd
->lc_argtype
& ARG_H
))
858 evp
->le_add_history
= (((cmd
->lc_argtype
& ARG_G
) ||
859 (pstate
& PS_MSGLIST_GABBY
)) ? TRUM1
: TRU1
);
863 bool_t reset
= !(pstate
& PS_ROOT
);
866 ok_vset(_exit_status
, (e
== 0 ? "0" : "1")); /* TODO num=1 +real value! */
871 /* Exit the current source file on error TODO what a mess! */
873 pstate
&= ~PS_EVAL_ERROR
;
875 pstate
|= PS_EVAL_ERROR
;
876 if(e
< 0 || (pstate
& PS_ROBOT
)){ /* FIXME */
885 if((cmd
->lc_argtype
& ARG_P
) && ok_blook(autoprint
))
887 line
.s
= savestr("type");
888 line
.l
= sizeof("type") -1;
889 gp
= (struct a_lex_ghost
*)-1; /* Avoid `ghost' interpretation */
893 if(!(pstate
& (PS_SOURCING
| PS_HOOK_MASK
)) && !(cmd
->lc_argtype
& ARG_T
))
894 pstate
|= PS_SAW_COMMAND
;
896 pstate
&= ~PS_EVAL_ERROR
;
901 fprintf(stderr, "a_lex_evaluate returns %d for <%s>\n",e,line.s);
907 static struct a_lex_cmd
const *
908 a_lex__firstfit(char const *comm
){ /* TODO *hashtable*! linear list search!!! */
909 struct a_lex_cmd
const *cp
;
912 for(cp
= a_lex_cmd_tab
;
913 PTRCMP(cp
, <, &a_lex_cmd_tab
[n_NELEM(a_lex_cmd_tab
)]); ++cp
)
914 if(*comm
== *cp
->lc_name
&& is_prefix(comm
, cp
->lc_name
))
924 NYD_X
; /* Signal handler */
931 a_lex_onintr(int s
){ /* TODO block signals while acting */
932 NYD_X
; /* Signal handler */
935 safe_signal(SIGINT
, a_lex_onintr
);
937 termios_state_reset();
938 close_all_files(); /* FIXME .. of current level ONLU! */
944 a_lex_unstack(TRUM1
);
947 n_err_sighdl(_("Interrupt\n"));
948 safe_signal(SIGPIPE
, a_lex_oldpipe
);
949 siglongjmp(a_lex_srbuf
, 0); /* FIXME get rid */
953 a_lex_unstack(bool_t eval_error
){
954 struct a_lex_input_stack
*lip
;
957 if((lip
= a_lex_input
) == NULL
){
960 /* If called from a_lex_onintr(), be silent FIXME */
961 pstate
&= ~(PS_SOURCING
| PS_ROBOT
);
962 if(eval_error
== TRUM1
|| !(pstate
& PS_STARTED
))
967 if(lip
->li_flags
& a_LEX_MACRO
){
968 if(lip
->li_flags
& a_LEX_MACRO_FREE_DATA
){
971 while(*(lp
= &lip
->li_lines
[lip
->li_loff
]) != NULL
){
975 /* Part of lip's memory chunk, then */
976 if(!(lip
->li_flags
& a_LEX_MACRO_CMD
))
980 if(lip
->li_flags
& a_LEX_PIPE
)
981 /* XXX command manager should -TERM then -KILL instead of hoping
982 * XXX for exit of provider due to EPIPE / SIGPIPE */
983 Pclose(lip
->li_file
, TRU1
);
985 Fclose(lip
->li_file
);
988 if(!condstack_take(lip
->li_cond
)){
989 n_err(_("Unmatched `if' at end of %s %s\n"),
990 ((lip
->li_flags
& a_LEX_MACRO
991 ? (lip
->li_flags
& a_LEX_MACRO_CMD
? _("command") : _("macro"))
992 : _("`source'd file"))),
997 n_memory_autorec_pop(&lip
->li_autorecmem
[0]);
999 /* XXX We need some kind of "is real macro" instead of that */
1000 if((lip
->li_flags
& (a_LEX_MACRO
| a_LEX_MACRO_X_OPTION
| a_LEX_MACRO_CMD
))
1001 == a_LEX_MACRO
&& lip
->li_macro_on_finalize
!= NULL
)
1002 (*lip
->li_macro_on_finalize
)(lip
->li_macro_finalize_arg
);
1004 if((a_lex_input
= lip
->li_outer
) == NULL
){
1005 pstate
&= ~(PS_SOURCING
| PS_ROBOT
);
1007 if((a_lex_input
->li_flags
& (a_LEX_MACRO
| a_LEX_SUPER_MACRO
)) ==
1008 (a_LEX_MACRO
| a_LEX_SUPER_MACRO
))
1009 pstate
&= ~PS_SOURCING
;
1010 assert(pstate
& PS_ROBOT
);
1016 if(lip
!= NULL
&& (lip
->li_flags
& a_LEX_FREE
))
1018 if(n_UNLIKELY(a_lex_input
!= NULL
&& eval_error
== TRUM1
))
1019 a_lex_unstack(TRUM1
);
1025 if(options
& OPT_D_V
)
1026 n_alert(_("Stopped %s %s due to errors%s"),
1027 (pstate
& PS_STARTED
1028 ? (lip
->li_flags
& a_LEX_MACRO
1029 ? (lip
->li_flags
& a_LEX_MACRO_CMD
1030 ? _("evaluating command") : _("evaluating macro"))
1031 : (lip
->li_flags
& a_LEX_PIPE
1032 ? _("executing `source'd pipe")
1033 : _("loading `source'd file")))
1034 : (lip
->li_flags
& a_LEX_MACRO
1035 ? (lip
->li_flags
& a_LEX_MACRO_X_OPTION
1036 ? _("evaluating command line") : _("evaluating macro"))
1037 : _("loading initialization resource"))),
1039 (options
& OPT_DEBUG
? n_empty
: _(" (enable *debug* for trace)")));
1042 if(!(options
& OPT_INTERACTIVE
) && !(pstate
& PS_STARTED
)){
1043 if(options
& OPT_D_V
)
1044 n_alert(_("Non-interactive, bailing out due to errors "
1045 "in startup load phase"));
1052 a_lex_source_file(char const *file
, bool_t silent_error
){
1053 struct a_lex_input_stack
*lip
;
1062 /* Being a command argument file is space-trimmed *//* TODO v15 with
1063 * TODO WYRALIST this is no longer necessary true, and for that we
1064 * TODO don't set _PARSE_TRIMSPACE because we cannot! -> cmd_tab.h!! */
1066 ((ispipe
= (!silent_error
&& (nlen
= strlen(file
)) > 0 &&
1067 file
[--nlen
] == '|')))
1071 for(nlen
= strlen(file
); nlen
> 0;){
1077 nbuf
= savestrbuf(file
, nlen
);
1086 if((fip
= Popen(nbuf
/* #if 0 above = savestrbuf(file, nlen)*/, "r",
1087 ok_vlook(SHELL
), NULL
, COMMAND_FD_NULL
)) == NULL
){
1088 if(!silent_error
|| (options
& OPT_D_V
))
1092 }else if((nbuf
= fexpand(file
, FEXP_LOCAL
)) == NULL
)
1094 else if((fip
= Fopen(nbuf
, "r")) == NULL
){
1095 if(!silent_error
|| (options
& OPT_D_V
))
1100 lip
= smalloc(sizeof(*lip
) -
1101 n_VFIELD_SIZEOF(struct a_lex_input_stack
, li_name
) +
1102 (nlen
= strlen(nbuf
) +1));
1103 lip
->li_outer
= a_lex_input
;
1105 lip
->li_cond
= condstack_release();
1106 n_memory_autorec_push(&lip
->li_autorecmem
[0]);
1107 lip
->li_flags
= (ispipe
? a_LEX_FREE
| a_LEX_PIPE
: a_LEX_FREE
) |
1108 (a_lex_input
!= NULL
&& (a_lex_input
->li_flags
& a_LEX_SUPER_MACRO
)
1109 ? a_LEX_SUPER_MACRO
: 0);
1110 memcpy(lip
->li_name
, nbuf
, nlen
);
1112 pstate
|= PS_SOURCING
| PS_ROBOT
;
1114 a_commands_recursive(n_LEXINPUT_NONE
| n_LEXINPUT_NL_ESC
);
1115 /* FIXME return TRUM1 if file can't be opened, FAL0 on eval error */
1118 return silent_error
? TRU1
: (fip
!= NULL
);
1122 a_lex_load(struct a_lex_input_stack
*lip
){
1126 assert(!(pstate
& PS_STARTED
));
1127 assert(a_lex_input
== NULL
);
1130 * Any errors in the start-up file shall either cause mailx to terminate
1131 * with a diagnostic message and a non-zero status or to continue after
1132 * writing a diagnostic message, ignoring the remainder of the lines in
1133 * the start-up file. */
1134 lip
->li_cond
= condstack_release();
1135 n_memory_autorec_push(&lip
->li_autorecmem
[0]);
1137 /* FIXME won't work for now (PS_ROBOT needs PS_SOURCING anyway)
1138 pstate |= PS_ROBOT |
1139 (lip->li_flags & a_LEX_MACRO_X_OPTION ? 0 : PS_SOURCING);
1141 pstate
|= PS_ROBOT
| PS_SOURCING
;
1142 if(options
& OPT_D_V
)
1143 n_err(_("Loading %s\n"), n_shexp_quote_cp(lip
->li_name
, FAL0
));
1145 if(!(rv
= n_commands())){
1146 if(!(options
& OPT_INTERACTIVE
)){
1147 if(options
& OPT_D_V
)
1148 n_alert(_("Non-interactive program mode, forced exit"));
1152 /* PS_EXIT handled by callers */
1158 a_lex__cmdrecint(int sig
){ /* TODO one day, we don't need it no more */
1159 NYD_X
; /* Signal handler */
1161 siglongjmp(a_lex_input
->li_cmdrec_jmp
, 1);
1165 a_commands_recursive(enum n_lexinput_flags lif
){
1166 volatile int hadint
; /* TODO get rid of shitty signal stuff (see signal.c) */
1167 sighandler_type soldhdl
;
1168 sigset_t sintset
, soldset
;
1169 struct a_lex_eval_ctx ev
;
1173 memset(&ev
, 0, sizeof ev
);
1175 sigfillset(&sintset
);
1176 sigprocmask(SIG_BLOCK
, &sintset
, &soldset
);
1178 if((soldhdl
= safe_signal(SIGINT
, SIG_IGN
)) != SIG_IGN
){
1179 safe_signal(SIGINT
, &a_lex__cmdrecint
);
1180 if(sigsetjmp(a_lex_input
->li_cmdrec_jmp
, 1)){
1185 sigprocmask(SIG_SETMASK
, &soldset
, NULL
);
1187 n_COLOUR( n_colour_env_push(); )
1192 /* Read a line of commands and handle end of file specially */
1193 ev
.le_line
.l
= ev
.le_line_size
;
1194 n
= n_lex_input(lif
, NULL
, &ev
.le_line
.s
, &ev
.le_line
.l
,
1196 ev
.le_line_size
= (ui32_t
)ev
.le_line
.l
;
1197 ev
.le_line
.l
= (ui32_t
)n
;
1202 if(a_lex_evaluate(&ev
)){
1208 if((options
& OPT_BATCH_FLAG
) && ok_blook(batch_exit_on_error
)){
1209 if(exit_status
!= EXIT_OK
)
1215 n_COLOUR( n_colour_env_pop(FAL0
); )
1217 if(ev
.le_line
.s
!= NULL
)
1220 if(soldhdl
!= SIG_IGN
)
1221 safe_signal(SIGINT
, soldhdl
);
1224 sigprocmask(SIG_SETMASK
, &soldset
, NULL
);
1231 n_commands(void){ /* FIXME */
1232 struct a_lex_eval_ctx ev
;
1239 if (!(pstate
& PS_SOURCING
)) {
1240 if (safe_signal(SIGINT
, SIG_IGN
) != SIG_IGN
)
1241 safe_signal(SIGINT
, &a_lex_onintr
);
1242 if (safe_signal(SIGHUP
, SIG_IGN
) != SIG_IGN
)
1243 safe_signal(SIGHUP
, &a_lex_hangup
);
1245 a_lex_oldpipe
= safe_signal(SIGPIPE
, SIG_IGN
);
1246 safe_signal(SIGPIPE
, a_lex_oldpipe
);
1248 memset(&ev
, 0, sizeof ev
);
1250 (void)sigsetjmp(a_lex_srbuf
, 1); /* FIXME get rid */
1252 char *temporary_orig_line
; /* XXX eval_ctx.le_line not yet constant */
1254 n_COLOUR( n_colour_env_pop(TRU1
); )
1256 /* TODO Unless we have our signal manager (or however we do it) child
1257 * TODO processes may have time slots where their execution isn't
1258 * TODO protected by signal handlers (in between start and setup
1259 * TODO completed). close_all_files() is only called from onintr()
1260 * TODO so those may linger possibly forever */
1261 if(!(pstate
& PS_SOURCING
))
1266 temporary_localopts_free(); /* XXX intermediate hack */
1270 if (!(pstate
& PS_SOURCING
)) {
1273 /* TODO Note: this buffer may contain a password. We should redefine
1274 * TODO the code flow which has to do that */
1275 if ((cp
= termios_state
.ts_linebuf
) != NULL
) {
1276 termios_state
.ts_linebuf
= NULL
;
1277 termios_state
.ts_linesize
= 0;
1278 free(cp
); /* TODO pool give-back */
1280 /* TODO Due to expand-on-tab of NCL the buffer may grow */
1281 if (ev
.le_line
.l
> LINESIZE
* 3) {
1282 free(ev
.le_line
.s
); /* TODO pool! but what? */
1283 ev
.le_line
.s
= NULL
;
1284 ev
.le_line
.l
= ev
.le_line_size
= 0;
1288 if (!(pstate
& PS_SOURCING
) && (options
& OPT_INTERACTIVE
)) {
1291 cp
= ok_vlook(newmail
);
1292 if ((options
& OPT_TTYIN
) && cp
!= NULL
) {
1295 /* FIXME TEST WITH NOPOLL ETC. !!! */
1296 n
= (cp
!= NULL
&& strcmp(cp
, "nopoll"));
1297 if ((mb
.mb_type
== MB_FILE
&& !stat(mailname
, &st
) &&
1298 st
.st_size
> mailsize
) ||
1299 (mb
.mb_type
== MB_MAILDIR
&& n
!= 0)) {
1300 size_t odot
= PTR2SIZE(dot
- message
);
1301 ui32_t odid
= (pstate
& PS_DID_PRINT_DOT
);
1303 if (setfile(mailname
,
1305 ((mb
.mb_perm
& MB_DELE
) ? 0 : FEDIT_RDONLY
)) < 0) {
1306 exit_status
|= EXIT_ERR
;
1310 dot
= message
+ odot
;
1315 exit_status
= EXIT_OK
;
1318 /* Read a line of commands and handle end of file specially */
1320 ev
.le_line
.l
= ev
.le_line_size
;
1321 n
= n_lex_input(n_LEXINPUT_CTX_DEFAULT
| n_LEXINPUT_NL_ESC
, NULL
,
1322 &ev
.le_line
.s
, &ev
.le_line
.l
, ev
.le_new_content
);
1323 ev
.le_line_size
= (ui32_t
)ev
.le_line
.l
;
1324 ev
.le_line
.l
= (ui32_t
)n
;
1327 /* FIXME did unstack() when PS_SOURCING, only break with PS_LOADING*/
1328 if (!(pstate
& PS_ROBOT
) &&
1329 (options
& OPT_INTERACTIVE
) && ok_blook(ignoreeof
)) {
1330 printf(_("*ignoreeof* set, use `quit' to quit.\n"));
1331 n_msleep(500, FAL0
);
1337 temporary_orig_line
= ((pstate
& PS_SOURCING
) ||
1338 !(options
& OPT_INTERACTIVE
)) ? NULL
1339 : savestrbuf(ev
.le_line
.s
, ev
.le_line
.l
);
1340 pstate
&= ~PS_HOOK_MASK
;
1341 if (a_lex_evaluate(&ev
)) {
1342 if (!(pstate
& PS_STARTED
)) /* TODO mess; join PS_EVAL_ERROR.. */
1347 if ((options
& OPT_BATCH_FLAG
) && ok_blook(batch_exit_on_error
)) {
1348 if (exit_status
!= EXIT_OK
)
1350 if ((pstate
& (PS_SOURCING
| PS_EVAL_ERROR
)) == PS_EVAL_ERROR
) {
1351 exit_status
= EXIT_ERR
;
1355 if (!(pstate
& PS_SOURCING
) && (options
& OPT_INTERACTIVE
)) {
1356 if (ev
.le_new_content
!= NULL
)
1358 /* *Can* happen since _evaluate() n_unstack()s on error! XXX no more */
1359 if (temporary_orig_line
!= NULL
)
1360 n_tty_addhist(temporary_orig_line
, (ev
.le_add_history
!= TRU1
));
1363 if(pstate
& PS_EXIT
)
1369 if (ev
.le_line
.s
!= NULL
)
1376 (n_lex_input
)(enum n_lexinput_flags lif
, char const *prompt
, char **linebuf
,
1377 size_t *linesize
, char const *string n_MEMORY_DEBUG_ARGS
){
1378 /* TODO readline: linebuf pool!; n_lex_input should return si64_t */
1379 struct n_string xprompt
;
1381 bool_t doprompt
, dotty
;
1386 /* Special case macro mode: never need to prompt, lines have always been
1387 * unfolded already */
1388 if(a_lex_input
!= NULL
&& (a_lex_input
->li_flags
& a_LEX_MACRO
)){
1389 if(*linebuf
!= NULL
)
1392 if((*linebuf
= a_lex_input
->li_lines
[a_lex_input
->li_loff
]) == NULL
){
1398 ++a_lex_input
->li_loff
;
1399 *linesize
= strlen(*linebuf
);
1400 if(!(a_lex_input
->li_flags
& a_LEX_MACRO_FREE_DATA
))
1401 *linebuf
= sbufdup(*linebuf
, *linesize
);
1403 iftype
= (a_lex_input
->li_flags
& a_LEX_MACRO_X_OPTION
)
1404 ? "-X OPTION" : "MACRO";
1406 pstate
|= PS_READLINE_NL
;
1409 pstate
&= ~PS_READLINE_NL
;
1411 iftype
= (!(pstate
& PS_STARTED
) ? "LOAD"
1412 : (pstate
& PS_SOURCING
) ? "SOURCE" : "READ");
1413 doprompt
= ((pstate
& (PS_STARTED
| PS_ROBOT
)) == PS_STARTED
&&
1414 (options
& OPT_INTERACTIVE
));
1415 dotty
= (doprompt
&& !ok_blook(line_editor_disable
));
1417 lif
|= n_LEXINPUT_PROMPT_NONE
;
1420 n_string_creat_auto(&xprompt
);
1422 lif
|= n_LEXINPUT_PROMPT_EVAL
;
1425 /* Ensure stdout is flushed first anyway */
1426 if(!dotty
&& (lif
& n_LEXINPUT_PROMPT_NONE
))
1429 ifile
= (a_lex_input
!= NULL
) ? a_lex_input
->li_file
: stdin
;
1430 assert(ifile
!= NULL
);
1432 for(nold
= n
= 0;;){
1434 assert(ifile
== stdin
);
1435 if(string
!= NULL
&& (n
= (int)strlen(string
)) > 0){
1439 *linesize
= (size_t)n
+ LINESIZE
+1;
1440 *linebuf
= (n_realloc
)(*linebuf
, *linesize n_MEMORY_DEBUG_ARGSCALL
);
1441 memcpy(*linebuf
, string
, (size_t)n
+1);
1444 /* TODO if nold>0, don't redisplay the entire line!
1445 * TODO needs complete redesign ... */
1446 n
= (n_tty_readline
)(lif
, prompt
, linebuf
, linesize
, n
1447 n_MEMORY_DEBUG_ARGSCALL
);
1449 if(!(lif
& n_LEXINPUT_PROMPT_NONE
)){
1450 n_tty_create_prompt(&xprompt
, prompt
, lif
);
1451 if(xprompt
.s_len
> 0){
1452 fwrite(xprompt
.s_dat
, 1, xprompt
.s_len
, stdout
);
1457 n
= (readline_restart
)(ifile
, linebuf
, linesize
, n
1458 n_MEMORY_DEBUG_ARGSCALL
);
1460 if(n
> 0 && nold
> 0){
1462 char const *cp
= *linebuf
+ nold
;
1464 while(blankspacechar(*cp
) && nold
+ i
< n
)
1467 memmove(*linebuf
+ nold
, cp
, n
- nold
- i
);
1469 (*linebuf
)[n
] = '\0';
1478 * An unquoted <backslash> at the end of a command line shall
1479 * be discarded and the next line shall continue the command */
1480 if(!(lif
& n_LEXINPUT_NL_ESC
) || (*linebuf
)[n
- 1] != '\\'){
1482 pstate
|= PS_READLINE_NL
;
1485 /* Definitely outside of quotes, thus the quoting rules are so that an
1486 * uneven number of successive backslashs at EOL is a continuation */
1490 for(j
= 1, i
= (size_t)n
- 1; i
-- > 0; ++j
)
1491 if((*linebuf
)[i
] != '\\')
1496 (*linebuf
)[nold
= --n
] = '\0';
1497 lif
|= n_LEXINPUT_NL_FOLLOW
;
1502 (*linebuf
)[*linesize
= n
] = '\0';
1506 if(lif
& n_LEXINPUT_DROP_TRAIL_SPC
){
1510 for(cp
= &(*linebuf
)[i
= (size_t)n
];; --i
){
1512 if(!blankspacechar(c
))
1515 (*linebuf
)[n
= (int)i
] = '\0';
1518 if(lif
& n_LEXINPUT_DROP_LEAD_SPC
){
1522 for(cp
= &(*linebuf
)[0], j
= (size_t)n
, i
= 0; i
< j
; ++i
){
1524 if(!blankspacechar(c
))
1528 memcpy(&(*linebuf
)[0], &(*linebuf
)[i
], j
-= i
);
1529 (*linebuf
)[n
= (int)j
] = '\0';
1532 #endif /* 0 (notyet - must take care for backslash escaped space) */
1534 if(options
& OPT_D_VV
)
1535 n_err(_("%s %d bytes <%s>\n"), iftype
, n
, *linebuf
);
1537 if (pstate
& PS_PSTATE_PENDMASK
)
1538 a_lex_update_pstate();
1544 n_lex_input_cp(enum n_lexinput_flags lif
, char const *prompt
,
1545 char const *string
){
1546 /* FIXME n_lex_input_cp_addhist(): leaks on sigjmp without linepool */
1556 n
= n_lex_input(lif
, prompt
, &linebuf
, &linesize
, string
);
1557 if(n
> 0 && *(rv
= savestrbuf(linebuf
, (size_t)n
)) != '\0' &&
1558 (lif
& n_LEXINPUT_HIST_ADD
) && (options
& OPT_INTERACTIVE
))
1559 n_tty_addhist(rv
, ((lif
& n_LEXINPUT_HIST_GABBY
) != 0));
1568 n_load(char const *name
){
1569 struct a_lex_input_stack
*lip
;
1574 if(name
== NULL
|| *name
== '\0' || (fip
= Fopen(name
, "r")) == NULL
)
1577 i
= strlen(name
) +1;
1578 lip
= scalloc(1, sizeof(*lip
) -
1579 n_VFIELD_SIZEOF(struct a_lex_input_stack
, li_name
) + i
);
1581 lip
->li_flags
= a_LEX_FREE
;
1582 memcpy(lip
->li_name
, name
, i
);
1591 n_load_Xargs(char const **lines
, size_t cnt
){
1592 static char const name
[] = "-X";
1594 ui8_t buf
[sizeof(struct a_lex_input_stack
) + sizeof name
];
1595 char const *srcp
, *xsrcp
;
1597 size_t imax
, i
, len
;
1598 struct a_lex_input_stack
*lip
;
1601 memset(buf
, 0, sizeof buf
);
1603 lip
->li_flags
= a_LEX_MACRO
| a_LEX_MACRO_FREE_DATA
|
1604 a_LEX_MACRO_X_OPTION
| a_LEX_SUPER_MACRO
;
1605 memcpy(lip
->li_name
, name
, sizeof name
);
1607 /* The problem being that we want to support reverse solidus newline
1608 * escaping also within multiline -X, i.e., POSIX says:
1609 * An unquoted <backslash> at the end of a command line shall
1610 * be discarded and the next line shall continue the command
1611 * Therefore instead of "lip->li_lines = n_UNCONST(lines)", duplicate the
1612 * entire lines array and set _MACRO_FREE_DATA */
1614 lip
->li_lines
= smalloc(sizeof(*lip
->li_lines
) * imax
);
1616 /* For each of the input lines.. */
1617 for(i
= len
= 0, cp
= NULL
; cnt
> 0;){
1621 if((j
= strlen(srcp
= *lines
)) == 0){
1626 /* Separate one line from a possible multiline input string */
1627 if((xsrcp
= memchr(srcp
, '\n', j
)) != NULL
){
1629 j
= PTR2SIZE(xsrcp
- srcp
);
1633 /* The (separated) string may itself indicate soft newline escaping */
1634 if((keep
= (srcp
[j
- 1] == '\\'))){
1637 /* Need an uneven number of reverse solidus */
1638 for(xk
= 1, xj
= j
- 1; xj
-- > 0; ++xk
)
1639 if(srcp
[xj
] != '\\')
1647 /* Strip any leading WS from follow lines, then */
1649 while(j
> 0 && blankspacechar(*srcp
))
1653 if(i
+ 2 >= imax
){ /* TODO need a vector (main.c, here, ++) */
1655 lip
->li_lines
= n_realloc(lip
->li_lines
, sizeof(*lip
->li_lines
) *
1658 lip
->li_lines
[i
] = cp
= n_realloc(cp
, len
+ j
+1);
1659 memcpy(&cp
[len
], srcp
, j
);
1660 cp
[len
+= j
] = '\0';
1669 assert(i
+ 1 < imax
);
1670 lip
->li_lines
[i
++] = cp
;
1672 lip
->li_lines
[i
] = NULL
;
1675 if(pstate
& PS_EXIT
)
1685 rv
= (a_lex_source_file(*(char**)v
, FAL0
) == TRU1
) ? 0 : 1;
1691 c_source_if(void *v
){ /* XXX obsolete?, support file tests in `if' etc.! */
1695 rv
= (a_lex_source_file(*(char**)v
, TRU1
) != FAL0
) ? 0 : 1;
1701 n_source_macro(enum n_lexinput_flags lif
, char const *name
, char **lines
,
1702 void (*on_finalize
)(void*), void *finalize_arg
){
1703 struct a_lex_input_stack
*lip
;
1708 lip
= smalloc(sizeof(*lip
) -
1709 n_VFIELD_SIZEOF(struct a_lex_input_stack
, li_name
) +
1710 (i
= strlen(name
) +1));
1711 lip
->li_outer
= a_lex_input
;
1712 lip
->li_file
= NULL
;
1713 lip
->li_cond
= condstack_release();
1714 n_memory_autorec_push(&lip
->li_autorecmem
[0]);
1715 lip
->li_flags
= a_LEX_FREE
| a_LEX_MACRO
| a_LEX_MACRO_FREE_DATA
|
1716 (a_lex_input
== NULL
|| (a_lex_input
->li_flags
& a_LEX_SUPER_MACRO
)
1717 ? a_LEX_SUPER_MACRO
: 0);
1719 lip
->li_lines
= lines
;
1720 lip
->li_macro_on_finalize
= on_finalize
;
1721 lip
->li_macro_finalize_arg
= finalize_arg
;
1722 memcpy(lip
->li_name
, name
, i
);
1726 rv
= a_commands_recursive(lif
);
1732 n_source_command(enum n_lexinput_flags lif
, char const *cmd
){
1733 struct a_lex_input_stack
*lip
;
1739 cmd
= sbufdup(cmd
, i
++); /* XXX Unfortunately need to dup cmd :( */
1742 lip
= smalloc(sizeof(*lip
) -
1743 n_VFIELD_SIZEOF(struct a_lex_input_stack
, li_name
) +
1744 ial
+ 2*sizeof(char*));
1745 lip
->li_outer
= a_lex_input
;
1746 lip
->li_file
= NULL
;
1747 lip
->li_cond
= condstack_release();
1748 n_memory_autorec_push(&lip
->li_autorecmem
[0]);
1749 lip
->li_flags
= a_LEX_FREE
| a_LEX_MACRO
| a_LEX_MACRO_FREE_DATA
|
1751 (a_lex_input
== NULL
|| (a_lex_input
->li_flags
& a_LEX_SUPER_MACRO
)
1752 ? a_LEX_SUPER_MACRO
: 0);
1754 lip
->li_lines
= (void*)(lip
->li_name
+ ial
);
1755 lip
->li_lines
[0] = n_UNCONST(cmd
); /* dup'ed above */
1756 lip
->li_lines
[1] = NULL
;
1757 memcpy(lip
->li_name
, cmd
, i
);
1761 rv
= a_commands_recursive(lif
);
1767 n_source_may_yield_control(void){
1768 return ((options
& OPT_INTERACTIVE
) &&
1769 (pstate
& PS_STARTED
) &&
1770 (!(pstate
& PS_ROBOT
) || (pstate
& PS_RECURSED
)) && /* Ok for ~: */
1771 (a_lex_input
== NULL
|| a_lex_input
->li_outer
== NULL
));