2 * Copyright (c) 1985 Sun Microsystems, Inc.
3 * Copyright (c) 1976 Board of Trustees of the University of Illinois.
4 * Copyright (c) 1980, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * @(#) Copyright (c) 1985 Sun Microsystems, Inc. @(#) Copyright (c) 1976 Board of Trustees of the University of Illinois. @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
36 * @(#)indent.c 5.17 (Berkeley) 6/7/93
37 * $FreeBSD: src/usr.bin/indent/indent.c,v 1.5.2.6 2001/12/06 19:28:47 schweikh Exp $
38 * $DragonFly: src/usr.bin/indent/indent.c,v 1.3 2005/04/10 20:55:38 drhodus Exp $
41 #include <sys/param.h>
49 #include "indent_globs.h"
50 #include "indent_codes.h"
53 static void bakcopy(void);
55 char *in_name
= "Standard Input"; /* will always point to name of input
57 char *out_name
= "Standard Output"; /* will always point to name
59 char bakfile
[MAXPATHLEN
] = "";
62 main(int argc
, char **argv
)
65 extern int found_err
; /* flag set in diagN() on error */
66 int dec_ind
; /* current indentation for declarations */
67 int di_stack
[20]; /* a stack of structure indentation levels */
68 int flushed_nl
; /* used when buffering up comments to remember
69 * that a newline was passed over */
70 int force_nl
; /* when true, code must be broken */
71 int hd_type
= 0; /* used to store type of stmt for if (...),
73 int i
; /* local loop counter */
74 int scase
; /* set to true when we see a case, so we will
75 * know what to do with the following colon */
76 int sp_sw
; /* when true, we are in the expressin of
77 * if(...), while(...), etc. */
78 int squest
; /* when this is positive, we have seen a ?
79 * without the matching : in a <c>?<s>:<s>
81 char *t_ptr
; /* used for copying tokens */
82 int type_code
; /* the type of token, returned by lexi */
84 int last_else
= 0; /* true iff last keyword was an else */
87 /*-----------------------------------------------*\
89 \*-----------------------------------------------*/
92 ps
.p_stack
[0] = stmt
; /* this is the parser's stack */
93 ps
.last_nl
= true; /* this is true if the last thing scanned was
95 ps
.last_token
= semicolon
;
96 combuf
= (char *) malloc(bufsize
);
97 labbuf
= (char *) malloc(bufsize
);
98 codebuf
= (char *) malloc(bufsize
);
99 tokenbuf
= (char *) malloc(bufsize
);
100 l_com
= combuf
+ bufsize
- 5;
101 l_lab
= labbuf
+ bufsize
- 5;
102 l_code
= codebuf
+ bufsize
- 5;
103 l_token
= tokenbuf
+ bufsize
- 5;
104 combuf
[0] = codebuf
[0] = labbuf
[0] = ' '; /* set up code, label, and
106 combuf
[1] = codebuf
[1] = labbuf
[1] = '\0';
107 ps
.else_if
= 1; /* Default else-if special processing to on */
108 s_lab
= e_lab
= labbuf
+ 1;
109 s_code
= e_code
= codebuf
+ 1;
110 s_com
= e_com
= combuf
+ 1;
111 s_token
= e_token
= tokenbuf
+ 1;
113 in_buffer
= (char *) malloc(10);
114 in_buffer_limit
= in_buffer
+ 8;
115 buf_ptr
= buf_end
= in_buffer
;
117 had_eof
= ps
.in_decl
= ps
.decl_on_line
= break_comma
= false;
118 sp_sw
= force_nl
= false;
122 di_stack
[ps
.dec_nest
= 0] = 0;
123 ps
.want_blank
= ps
.in_stmt
= ps
.ind_stmt
= false;
126 scase
= ps
.pcase
= false;
136 /*--------------------------------------------------*\
137 | COMMAND LINE SCAN |
138 \*--------------------------------------------------*/
141 max_col
= 78; /* -l78 */
142 lineup_to_parens
= 1; /* -lp */
143 ps
.ljust_decl
= 0; /* -ndj */
144 ps
.com_ind
= 33; /* -c33 */
145 star_comment_cont
= 1; /* -sc */
146 ps
.ind_size
= 8; /* -i8 */
148 ps
.decl_indent
= 16; /* -di16 */
149 ps
.indent_parameters
= 1; /* -ip */
150 ps
.decl_com_ind
= 0; /* if this is not set to some positive value
151 * by an arg, we will set this equal to
153 btype_2
= 1; /* -br */
154 cuddle_else
= 1; /* -ce */
155 ps
.unindent_displace
= 0; /* -d0 */
156 ps
.case_indent
= 0; /* -cli0 */
157 format_block_comments
= 1; /* -fcb */
158 format_col1_comments
= 1; /* -fc1 */
159 procnames_start_line
= 1; /* -psl */
160 proc_calls_space
= 0; /* -npcs */
161 comment_delimiter_on_blankline
= 1; /* -cdb */
162 ps
.leave_comma
= 1; /* -nbc */
165 for (i
= 1; i
< argc
; ++i
)
166 if (strcmp(argv
[i
], "-npro") == 0)
172 for (i
= 1; i
< argc
; ++i
) {
175 * look thru args (if any) for changes to defaults
177 if (argv
[i
][0] != '-') {/* no flag on parameter */
178 if (input
== 0) { /* we must have the input file */
179 in_name
= argv
[i
]; /* remember name of input file */
180 input
= fopen(in_name
, "r");
181 if (input
== 0) /* check for open error */
182 err(1, "%s", in_name
);
185 else if (output
== 0) { /* we have the output file */
186 out_name
= argv
[i
]; /* remember name of output file */
187 if (strcmp(in_name
, out_name
) == 0) { /* attempt to overwrite
189 errx(1, "input and output files must be different");
191 output
= fopen(out_name
, "w");
192 if (output
== 0) /* check for create error */
193 err(1, "%s", out_name
);
196 errx(1, "unknown parameter: %s", argv
[i
]);
204 if (troff
|| input
== stdin
)
212 ps
.com_ind
= 2; /* dont put normal comments before column 2 */
214 if (bodyf
.font
[0] == 0)
215 parsefont(&bodyf
, "R");
216 if (scomf
.font
[0] == 0)
217 parsefont(&scomf
, "I");
218 if (blkcomf
.font
[0] == 0)
219 blkcomf
= scomf
, blkcomf
.size
+= 2;
220 if (boxcomf
.font
[0] == 0)
222 if (stringf
.font
[0] == 0)
223 parsefont(&stringf
, "L");
224 if (keywordf
.font
[0] == 0)
225 parsefont(&keywordf
, "B");
226 writefdef(&bodyf
, 'B');
227 writefdef(&scomf
, 'C');
228 writefdef(&blkcomf
, 'L');
229 writefdef(&boxcomf
, 'X');
230 writefdef(&stringf
, 'S');
231 writefdef(&keywordf
, 'K');
233 if (block_comment_max_col
<= 0)
234 block_comment_max_col
= max_col
;
235 if (ps
.decl_com_ind
<= 0) /* if not specified by user, set this */
236 ps
.decl_com_ind
= ps
.ljust_decl
? (ps
.com_ind
<= 10 ? 2 : ps
.com_ind
- 8) : ps
.com_ind
;
237 if (continuation_indent
== 0)
238 continuation_indent
= ps
.ind_size
;
239 fill_buffer(); /* get first batch of stuff into input buffer */
250 col
= ((col
- 1) & ~7) + 9;
255 if (col
> ps
.ind_size
)
256 ps
.ind_level
= ps
.i_l_follow
= col
/ ps
.ind_size
;
265 fprintf(output
, ".Fn \"%s\"\n", beg
);
271 while (1) { /* this is the main loop. it will go until we
275 type_code
= lexi(); /* lexi reads one token. The actual
276 * characters read are stored in "token". lexi
277 * returns a code indicating the type of token */
278 is_procname
= ps
.procname
[0];
281 * The following code moves everything following an if (), while (),
282 * else, etc. up to the start of the following stmt to a buffer. This
283 * allows proper handling of both kinds of brace placement.
287 while (ps
.search_brace
) { /* if we scanned an if(), while(),
288 * etc., we might need to copy stuff
289 * into a buffer we must loop, copying
290 * stuff into save_com, until we find
291 * the start of the stmt which follows
292 * the if, or whatever */
298 break; /* form feeds and newlines found here will be
301 case lbrace
: /* this is a brace that starts the compound
303 if (sc_end
== 0) { /* ignore buffering if a comment wasnt
305 ps
.search_brace
= false;
309 save_com
[0] = '{'; /* we either want to put the brace
310 * right after the if */
311 goto sw_buffer
; /* go to common code to get out of
314 case comment
: /* we have a comment, so we must copy it into
316 if (!flushed_nl
|| sc_end
!= 0) {
317 if (sc_end
== 0) { /* if this is the first comment, we
318 * must set up the buffer */
319 save_com
[0] = save_com
[1] = ' ';
320 sc_end
= &(save_com
[2]);
323 *sc_end
++ = '\n'; /* add newline between
328 *sc_end
++ = '/'; /* copy in start of comment */
331 for (;;) { /* loop until we get to the end of the comment */
332 *sc_end
= *buf_ptr
++;
333 if (buf_ptr
>= buf_end
)
336 if (*sc_end
++ == '*' && *buf_ptr
== '/')
337 break; /* we are at end of comment */
339 if (sc_end
>= &(save_com
[sc_size
])) { /* check for temp buffer
341 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever.");
346 *sc_end
++ = '/'; /* add ending slash */
347 if (++buf_ptr
>= buf_end
) /* get past / in buffer */
351 default: /* it is the start of a normal statment */
352 if (flushed_nl
) /* if we flushed a newline, make sure it is
355 if ((type_code
== sp_paren
&& *token
== 'i'
356 && last_else
&& ps
.else_if
)
357 || (type_code
== sp_nparen
&& *token
== 'e'
358 && e_code
!= s_code
&& e_code
[-1] == '}'))
361 if (sc_end
== 0) { /* ignore buffering if comment wasnt
363 ps
.search_brace
= false;
366 if (force_nl
) { /* if we should insert a nl here, put it into
369 --line_no
; /* this will be re-increased when the nl is
370 * read from the buffer */
373 if (verbose
&& !flushed_nl
) /* print error msg if the line
374 * was not already broken */
375 diag2(0, "Line broken");
378 for (t_ptr
= token
; *t_ptr
; ++t_ptr
)
379 *sc_end
++ = *t_ptr
; /* copy token into temp buffer */
383 ps
.search_brace
= false; /* stop looking for start of
385 bp_save
= buf_ptr
; /* save current input buffer */
387 buf_ptr
= save_com
; /* fix so that subsequent calls to
388 * lexi will take tokens out of
390 *sc_end
++ = ' ';/* add trailing blank, just in case */
394 } /* end of switch */
395 if (type_code
!= 0) /* we must make this check, just in case there
396 * was an unexpected EOF */
397 type_code
= lexi(); /* read another token */
398 /* if (ps.search_brace) ps.procname[0] = 0; */
399 if ((is_procname
= ps
.procname
[0]) && flushed_nl
400 && !procnames_start_line
&& ps
.in_decl
401 && type_code
== ident
)
403 } /* end of while (search_brace) */
406 if (type_code
== 0) { /* we got eof */
407 if (s_lab
!= e_lab
|| s_code
!= e_code
408 || s_com
!= e_com
) /* must dump end of line */
410 if (ps
.tos
> 1) /* check for balanced braces */
411 diag2(1, "Stuff missing from end of file.");
414 printf("There were %d output lines and %d comments\n",
415 ps
.out_lines
, ps
.out_coms
);
416 printf("(Lines with comments)/(Lines with code): %6.3f\n",
417 (1.0 * ps
.com_lines
) / code_lines
);
423 (type_code
!= comment
) &&
424 (type_code
!= newline
) &&
425 (type_code
!= preesc
) &&
426 (type_code
!= form_feed
)) {
428 (type_code
!= semicolon
) &&
429 (type_code
!= lbrace
|| !btype_2
)) {
430 /* we should force a broken line here */
431 if (verbose
&& !flushed_nl
)
432 diag2(0, "Line broken");
435 ps
.want_blank
= false; /* dont insert blank at line start */
438 ps
.in_stmt
= true; /* turn on flag which causes an extra level of
439 * indentation. this is turned off by a ; or
441 if (s_com
!= e_com
) { /* the turkey has embedded a comment
442 * in a line. fix it */
444 for (t_ptr
= s_com
; *t_ptr
; ++t_ptr
) {
449 *e_code
= '\0'; /* null terminate code sect */
450 ps
.want_blank
= false;
454 else if (type_code
!= comment
) /* preserve force_nl thru a comment */
455 force_nl
= false; /* cancel forced newline after newline, form
460 /*-----------------------------------------------------*\
461 | do switch on type of token scanned |
462 \*-----------------------------------------------------*/
464 switch (type_code
) { /* now, decide what to do with the token */
466 case form_feed
: /* found a form feed in line */
467 ps
.use_ff
= true; /* a form feed is treated much like a newline */
469 ps
.want_blank
= false;
473 if (ps
.last_token
!= comma
|| ps
.p_l_follow
> 0
474 || !ps
.leave_comma
|| ps
.block_init
|| !break_comma
|| s_com
!= e_com
) {
476 ps
.want_blank
= false;
478 ++line_no
; /* keep track of input line number */
481 case lparen
: /* got a '(' or '[' */
482 ++ps
.p_l_follow
; /* count parens to make Healy happy */
483 if (ps
.want_blank
&& *token
!= '[' &&
484 (ps
.last_token
!= ident
|| proc_calls_space
485 || (ps
.its_a_keyword
&& (!ps
.sizeof_keyword
|| Bill_Shannon
))))
487 if (ps
.in_decl
&& !ps
.block_init
)
488 if (troff
&& !ps
.dumped_decl_indent
&& !is_procname
&& ps
.last_token
== decl
) {
489 ps
.dumped_decl_indent
= 1;
490 sprintf(e_code
, "\n.Du %dp+\200p \"%s\"\n", dec_ind
* 7, token
);
491 e_code
+= strlen(e_code
);
494 while ((e_code
- s_code
) < dec_ind
) {
498 *e_code
++ = token
[0];
501 *e_code
++ = token
[0];
502 ps
.paren_indents
[ps
.p_l_follow
- 1] = e_code
- s_code
;
503 if (sp_sw
&& ps
.p_l_follow
== 1 && extra_expression_indent
504 && ps
.paren_indents
[0] < 2 * ps
.ind_size
)
505 ps
.paren_indents
[0] = 2 * ps
.ind_size
;
506 ps
.want_blank
= false;
507 if (ps
.in_or_st
&& *token
== '(' && ps
.tos
<= 2) {
509 * this is a kluge to make sure that declarations will be
510 * aligned right if proc decl has an explicit type on it, i.e.
513 parse(semicolon
); /* I said this was a kluge... */
514 ps
.in_or_st
= false; /* turn off flag for structure decl or
517 if (ps
.sizeof_keyword
)
518 ps
.sizeof_mask
|= 1 << ps
.p_l_follow
;
521 case rparen
: /* got a ')' or ']' */
523 if (ps
.cast_mask
& (1 << ps
.p_l_follow
) & ~ps
.sizeof_mask
) {
525 ps
.cast_mask
&= (1 << ps
.p_l_follow
) - 1;
526 ps
.want_blank
= false;
528 ps
.want_blank
= true;
529 ps
.sizeof_mask
&= (1 << ps
.p_l_follow
) - 1;
530 if (--ps
.p_l_follow
< 0) {
532 diag3(0, "Extra %c", *token
);
534 if (e_code
== s_code
) /* if the paren starts the line */
535 ps
.paren_level
= ps
.p_l_follow
; /* then indent it */
537 *e_code
++ = token
[0];
539 if (sp_sw
&& (ps
.p_l_follow
== 0)) { /* check for end of if
540 * (...), or some such */
542 force_nl
= true;/* must force newline after if */
543 ps
.last_u_d
= true; /* inform lexi that a following
544 * operator is unary */
545 ps
.in_stmt
= false; /* dont use stmt continuation
548 parse(hd_type
); /* let parser worry about if, or whatever */
550 ps
.search_brace
= btype_2
; /* this should insure that constructs
551 * such as main(){...} and int[]{...}
552 * have their braces put in the right
556 case unary_op
: /* this could be any unary operation */
560 if (troff
&& !ps
.dumped_decl_indent
&& ps
.in_decl
&& !is_procname
) {
561 sprintf(e_code
, "\n.Du %dp+\200p \"%s\"\n", dec_ind
* 7, token
);
562 ps
.dumped_decl_indent
= 1;
563 e_code
+= strlen(e_code
);
568 if (ps
.in_decl
&& !ps
.block_init
) { /* if this is a unary op
569 * in a declaration, we
572 for (i
= 0; token
[i
]; ++i
); /* find length of token */
573 while ((e_code
- s_code
) < (dec_ind
- i
)) {
575 *e_code
++ = ' '; /* pad it */
578 if (troff
&& token
[0] == '-' && token
[1] == '>')
580 for (t_ptr
= res
; *t_ptr
; ++t_ptr
) {
585 ps
.want_blank
= false;
588 case binary_op
: /* any binary operation */
611 else if (token
[1] == 0)
615 for (t_ptr
= res
; *t_ptr
; ++t_ptr
) {
617 *e_code
++ = *t_ptr
; /* move the operator */
620 ps
.want_blank
= true;
623 case postop
: /* got a trailing ++ or -- */
624 *e_code
++ = token
[0];
625 *e_code
++ = token
[1];
626 ps
.want_blank
= true;
629 case question
: /* got a ? */
630 squest
++; /* this will be used when a later colon
631 * appears so we can distinguish the
632 * <c>?<n>:<n> construct */
636 ps
.want_blank
= true;
639 case casestmt
: /* got word 'case' or 'default' */
640 scase
= true; /* so we can process the later colon properly */
643 case colon
: /* got a ':' */
644 if (squest
> 0) { /* it is part of the <c>?<n>: <n> construct */
649 ps
.want_blank
= true;
654 ps
.want_blank
= false;
657 ps
.in_stmt
= false; /* seeing a label does not imply we are in a
659 for (t_ptr
= s_code
; *t_ptr
; ++t_ptr
)
660 *e_lab
++ = *t_ptr
; /* turn everything so far into a label */
666 force_nl
= ps
.pcase
= scase
; /* ps.pcase will be used by
667 * dump_line to decide how to
668 * indent the label. force_nl
669 * will force a case n: to be
670 * on a line by itself */
672 ps
.want_blank
= false;
675 case semicolon
: /* got a ';' */
676 ps
.in_or_st
= false;/* we are not in an initialization or
677 * structure declaration */
678 scase
= false; /* these will only need resetting in a error */
680 if (ps
.last_token
== rparen
&& rparen_count
== 0)
681 ps
.in_parameter_declaration
= 0;
685 ps
.block_init_level
= 0;
688 if (ps
.in_decl
&& s_code
== e_code
&& !ps
.block_init
)
689 while ((e_code
- s_code
) < (dec_ind
- 1)) {
694 ps
.in_decl
= (ps
.dec_nest
> 0); /* if we were in a first level
695 * structure declaration, we
698 if ((!sp_sw
|| hd_type
!= forstmt
) && ps
.p_l_follow
> 0) {
701 * This should be true iff there were unbalanced parens in the
702 * stmt. It is a bit complicated, because the semicolon might
705 diag2(1, "Unbalanced parens");
707 if (sp_sw
) { /* this is a check for a if, while, etc. with
708 * unbalanced parens */
710 parse(hd_type
); /* dont lose the if, or whatever */
714 ps
.want_blank
= true;
715 ps
.in_stmt
= (ps
.p_l_follow
> 0); /* we are no longer in the
716 * middle of a stmt */
718 if (!sp_sw
) { /* if not if for (;;) */
719 parse(semicolon
); /* let parser know about end of stmt */
720 force_nl
= true;/* force newline after a end of stmt */
724 case lbrace
: /* got a '{' */
725 ps
.in_stmt
= false; /* dont indent the {} */
727 force_nl
= true;/* force other stuff on same line as '{' onto
729 else if (ps
.block_init_level
<= 0)
730 ps
.block_init_level
= 1;
732 ps
.block_init_level
++;
734 if (s_code
!= e_code
&& !ps
.block_init
) {
737 ps
.want_blank
= false;
739 else if (ps
.in_parameter_declaration
&& !ps
.in_or_st
) {
742 ps
.want_blank
= false;
745 if (ps
.in_parameter_declaration
)
746 prefix_blankline_requested
= 0;
748 if (ps
.p_l_follow
> 0) { /* check for preceding unbalanced
750 diag2(1, "Unbalanced parens");
752 if (sp_sw
) { /* check for unclosed if, for, etc. */
755 ps
.ind_level
= ps
.i_l_follow
;
758 if (s_code
== e_code
)
759 ps
.ind_stmt
= false; /* dont put extra indentation on line
761 if (ps
.in_decl
&& ps
.in_or_st
) { /* this is either a structure
762 * declaration or an init */
763 di_stack
[ps
.dec_nest
++] = dec_ind
;
767 ps
.decl_on_line
= false; /* we cant be in the middle of
768 * a declaration, so dont do
769 * special indentation of
771 if (blanklines_after_declarations_at_proctop
772 && ps
.in_parameter_declaration
)
773 postfix_blankline_requested
= 1;
774 ps
.in_parameter_declaration
= 0;
777 parse(lbrace
); /* let parser know about this */
778 if (ps
.want_blank
) /* put a blank before '{' if '{' is not at
781 ps
.want_blank
= false;
783 ps
.just_saw_decl
= 0;
786 case rbrace
: /* got a '}' */
787 if (ps
.p_stack
[ps
.tos
] == decl
&& !ps
.block_init
) /* semicolons can be
791 if (ps
.p_l_follow
) {/* check for unclosed if, for, else. */
792 diag2(1, "Unbalanced parens");
796 ps
.just_saw_decl
= 0;
797 ps
.block_init_level
--;
798 if (s_code
!= e_code
&& !ps
.block_init
) { /* '}' must be first on
801 diag2(0, "Line broken");
805 ps
.want_blank
= true;
806 ps
.in_stmt
= ps
.ind_stmt
= false;
807 if (ps
.dec_nest
> 0) { /* we are in multi-level structure
809 dec_ind
= di_stack
[--ps
.dec_nest
];
810 if (ps
.dec_nest
== 0 && !ps
.in_parameter_declaration
)
811 ps
.just_saw_decl
= 2;
814 prefix_blankline_requested
= 0;
815 parse(rbrace
); /* let parser know about this */
816 ps
.search_brace
= cuddle_else
&& ps
.p_stack
[ps
.tos
] == ifhead
817 && ps
.il
[ps
.tos
] >= ps
.ind_level
;
818 if (ps
.tos
<= 1 && blanklines_after_procs
&& ps
.dec_nest
<= 0)
819 postfix_blankline_requested
= 1;
822 case swstmt
: /* got keyword "switch" */
824 hd_type
= swstmt
; /* keep this for when we have seen the
826 goto copy_id
; /* go move the token into buffer */
828 case sp_paren
: /* token is if, while, for */
829 sp_sw
= true; /* the interesting stuff is done after the
830 * expression is scanned */
831 hd_type
= (*token
== 'i' ? ifstmt
:
832 (*token
== 'w' ? whilestmt
: forstmt
));
835 * remember the type of header for later use by parser
837 goto copy_id
; /* copy the token into line */
839 case sp_nparen
: /* got else, do */
842 if (e_code
!= s_code
&& (!cuddle_else
|| e_code
[-1] != '}')) {
844 diag2(0, "Line broken");
845 dump_line();/* make sure this starts a line */
846 ps
.want_blank
= false;
848 force_nl
= true;/* also, following stuff must go onto new line */
853 if (e_code
!= s_code
) { /* make sure this starts a line */
855 diag2(0, "Line broken");
857 ps
.want_blank
= false;
859 force_nl
= true;/* also, following stuff must go onto new line */
863 goto copy_id
; /* move the token into line */
865 case decl
: /* we have a declaration type (int, register,
867 parse(decl
); /* let parser worry about indentation */
868 if (ps
.last_token
== rparen
&& ps
.tos
<= 1) {
869 ps
.in_parameter_declaration
= 1;
870 if (s_code
!= e_code
) {
875 if (ps
.in_parameter_declaration
&& ps
.indent_parameters
&& ps
.dec_nest
== 0) {
876 ps
.ind_level
= ps
.i_l_follow
= 1;
879 ps
.in_or_st
= true; /* this might be a structure or initialization
881 ps
.in_decl
= ps
.decl_on_line
= true;
882 if ( /* !ps.in_or_st && */ ps
.dec_nest
<= 0)
883 ps
.just_saw_decl
= 2;
884 prefix_blankline_requested
= 0;
885 for (i
= 0; token
[i
++];); /* get length of token */
888 * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent
891 dec_ind
= ps
.decl_indent
> 0 ? ps
.decl_indent
: i
;
894 case ident
: /* got an identifier or constant */
895 if (ps
.in_decl
) { /* if we are in a declaration, we must indent
899 ps
.want_blank
= false;
900 if (is_procname
== 0 || !procnames_start_line
) {
901 if (!ps
.block_init
) {
902 if (troff
&& !ps
.dumped_decl_indent
) {
903 sprintf(e_code
, "\n.De %dp+\200p\n", dec_ind
* 7);
904 ps
.dumped_decl_indent
= 1;
905 e_code
+= strlen(e_code
);
907 while ((e_code
- s_code
) < dec_ind
) {
914 if (dec_ind
&& s_code
!= e_code
)
917 ps
.want_blank
= false;
920 else if (sp_sw
&& ps
.p_l_follow
== 0) {
930 if (troff
&& ps
.its_a_keyword
) {
931 e_code
= chfont(&bodyf
, &keywordf
, e_code
);
932 for (t_ptr
= token
; *t_ptr
; ++t_ptr
) {
934 *e_code
++ = keywordf
.allcaps
&& islower(*t_ptr
)
935 ? toupper(*t_ptr
) : *t_ptr
;
937 e_code
= chfont(&keywordf
, &bodyf
, e_code
);
940 for (t_ptr
= token
; *t_ptr
; ++t_ptr
) {
944 ps
.want_blank
= true;
947 case period
: /* treat a period kind of like a binary
949 *e_code
++ = '.'; /* move the period into line */
950 ps
.want_blank
= false; /* dont put a blank after a period */
954 ps
.want_blank
= (s_code
!= e_code
); /* only put blank after comma
955 * if comma does not start the
957 if (ps
.in_decl
&& is_procname
== 0 && !ps
.block_init
)
958 while ((e_code
- s_code
) < (dec_ind
- 1)) {
964 if (ps
.p_l_follow
== 0) {
965 if (ps
.block_init_level
<= 0)
967 if (break_comma
&& (!ps
.leave_comma
|| compute_code_target() + (e_code
- s_code
) > max_col
- 8))
972 case preesc
: /* got the character '#' */
973 if ((s_com
!= e_com
) ||
977 *e_lab
++ = '#'; /* move whole line to 'label' buffer */
984 while (*buf_ptr
== ' ' || *buf_ptr
== '\t') {
986 if (buf_ptr
>= buf_end
)
989 while (*buf_ptr
!= '\n' || (in_comment
&& !had_eof
)) {
992 if (buf_ptr
>= buf_end
)
997 *e_lab
++ = BACKSLASH
;
999 *e_lab
++ = *buf_ptr
++;
1000 if (buf_ptr
>= buf_end
)
1005 if (*buf_ptr
== '*' && !in_comment
&& !quote
) {
1007 *e_lab
++ = *buf_ptr
++;
1008 com_start
= e_lab
- s_lab
- 2;
1020 if (*buf_ptr
== '/' && in_comment
) {
1022 *e_lab
++ = *buf_ptr
++;
1023 com_end
= e_lab
- s_lab
;
1029 while (e_lab
> s_lab
&& (e_lab
[-1] == ' ' || e_lab
[-1] == '\t'))
1031 if (e_lab
- s_lab
== com_end
&& bp_save
== 0) { /* comment on
1032 * preprocessor line */
1033 if (sc_end
== 0) /* if this is the first comment, we
1034 * must set up the buffer */
1035 sc_end
= &(save_com
[0]);
1037 *sc_end
++ = '\n'; /* add newline between
1042 bcopy(s_lab
+ com_start
, sc_end
, com_end
- com_start
);
1043 sc_end
+= com_end
- com_start
;
1044 if (sc_end
>= &save_com
[sc_size
])
1046 e_lab
= s_lab
+ com_start
;
1047 while (e_lab
> s_lab
&& (e_lab
[-1] == ' ' || e_lab
[-1] == '\t'))
1049 bp_save
= buf_ptr
; /* save current input buffer */
1051 buf_ptr
= save_com
; /* fix so that subsequent calls to
1052 * lexi will take tokens out of
1054 *sc_end
++ = ' '; /* add trailing blank, just in case */
1058 *e_lab
= '\0'; /* null terminate line */
1062 if (strncmp(s_lab
, "#if", 3) == 0) {
1063 if (blanklines_around_conditional_compilation
) {
1065 prefix_blankline_requested
++;
1066 while ((c
= getc(input
)) == '\n');
1069 if (ifdef_level
< sizeof state_stack
/ sizeof state_stack
[0]) {
1070 match_state
[ifdef_level
].tos
= -1;
1071 state_stack
[ifdef_level
++] = ps
;
1074 diag2(1, "#if stack overflow");
1076 else if (strncmp(s_lab
, "#else", 5) == 0)
1077 if (ifdef_level
<= 0)
1078 diag2(1, "Unmatched #else");
1080 match_state
[ifdef_level
- 1] = ps
;
1081 ps
= state_stack
[ifdef_level
- 1];
1083 else if (strncmp(s_lab
, "#endif", 6) == 0) {
1084 if (ifdef_level
<= 0)
1085 diag2(1, "Unmatched #endif");
1091 * This match needs to be more intelligent before the
1094 if (match_state
[ifdef_level
].tos
>= 0
1095 && bcmp(&ps
, &match_state
[ifdef_level
], sizeof ps
))
1096 diag2(0, "Syntactically inconsistant #ifdef alternatives.");
1099 if (blanklines_around_conditional_compilation
) {
1100 postfix_blankline_requested
++;
1101 n_real_blanklines
= 0;
1104 break; /* subsequent processing of the newline
1105 * character will cause the line to be printed */
1107 case comment
: /* we have gotten a / followed by * this is a biggie */
1108 if (flushed_nl
) { /* we should force a broken line here */
1111 ps
.want_blank
= false; /* dont insert blank at line start */
1116 } /* end of big switch stmt */
1118 *e_code
= '\0'; /* make sure code section is null terminated */
1119 if (type_code
!= comment
&& type_code
!= newline
&& type_code
!= preesc
)
1120 ps
.last_token
= type_code
;
1121 } /* end of main while (1) loop */
1125 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1126 * backup file will be ".Bfile" then make the backup file the input and
1127 * original input file the output
1134 char buff
[8 * 1024];
1137 /* construct file name .Bfile */
1138 for (p
= in_name
; *p
; p
++); /* skip to end of string */
1139 while (p
> in_name
&& *p
!= '/') /* find last '/' */
1143 sprintf(bakfile
, "%s.BAK", p
);
1145 /* copy in_name to backup file */
1146 bakchn
= creat(bakfile
, 0600);
1148 err(1, "%s", bakfile
);
1149 while ((n
= read(fileno(input
), buff
, sizeof buff
)) != 0)
1150 if (write(bakchn
, buff
, n
) != n
)
1151 err(1, "%s", bakfile
);
1153 err(1, "%s", in_name
);
1157 /* re-open backup file as the input file */
1158 input
= fopen(bakfile
, "r");
1160 err(1, "%s", bakfile
);
1161 /* now the original input file will be the output */
1162 output
= fopen(in_name
, "w");
1165 err(1, "%s", in_name
);