?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
mountd(8): Replace malloc+strcpy with strdup/strndup
[dragonfly.git] / usr.bin / indent / indent.c
blob5bb5eef9757a04505c6e25859d71e05b49ee62b1
1 /*
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.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#) Copyright (c) 1985 Sun Microsystems, Inc.
32 * @(#) Copyright (c) 1976 Board of Trustees of the University of Illinois.
33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)indent.c 5.17 (Berkeley) 6/7/93
35 * $FreeBSD: src/usr.bin/indent/indent.c,v 1.26 2010/03/31 16:55:47 avg Exp $
36 */
37
38 #include <sys/param.h>
39 #include <err.h>
40 #include <fcntl.h>
41 #include <unistd.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <ctype.h>
46 #include "indent_globs.h"
47 #include "indent_codes.h"
48 #include "indent.h"
49
50 static void bakcopy(void);
51
52 const char *in_name = "Standard Input"; /* will always point to name of input
53 * file */
54 const char *out_name = "Standard Output"; /* will always point to name
55 * of output file */
56 char bakfile[MAXPATHLEN] = "";
57
58 int
59 main(int argc, char **argv)
60 {
61
62 int dec_ind; /* current indentation for declarations */
63 int di_stack[20]; /* a stack of structure indentation levels */
64 int flushed_nl; /* used when buffering up comments to remember
65 * that a newline was passed over */
66 int force_nl; /* when true, code must be broken */
67 int hd_type = 0; /* used to store type of stmt for if (...),
68 * for (...), etc */
69 int i; /* local loop counter */
70 int scase; /* set to true when we see a case, so we will
71 * know what to do with the following colon */
72 int sp_sw; /* when true, we are in the expression of
73 * if(...), while(...), etc. */
74 int squest; /* when this is positive, we have seen a ?
75 * without the matching : in a <c>?<s>:<s>
76 * construct */
77 const char *t_ptr; /* used for copying tokens */
78 int tabs_to_var; /* true if using tabs to indent to var name */
79 int type_code; /* the type of token, returned by lexi */
80
81 int last_else = 0; /* true iff last keyword was an else */
82
83
84 /*-----------------------------------------------*\
85 | INITIALIZATION |
86 \*-----------------------------------------------*/
87
88 found_err = 0;
89
90 ps.p_stack[0] = stmt; /* this is the parser's stack */
91 ps.last_nl = true; /* this is true if the last thing scanned was
92 * a newline */
93 ps.last_token = semicolon;
94 combuf = (char *) malloc(bufsize);
95 if (combuf == NULL)
96 err(1, NULL);
97 labbuf = (char *) malloc(bufsize);
98 if (labbuf == NULL)
99 err(1, NULL);
100 codebuf = (char *) malloc(bufsize);
101 if (codebuf == NULL)
102 err(1, NULL);
103 tokenbuf = (char *) malloc(bufsize);
104 if (tokenbuf == NULL)
105 err(1, NULL);
106 l_com = combuf + bufsize - 5;
107 l_lab = labbuf + bufsize - 5;
108 l_code = codebuf + bufsize - 5;
109 l_token = tokenbuf + bufsize - 5;
110 combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and
111 * comment buffers */
112 combuf[1] = codebuf[1] = labbuf[1] = '\0';
113 ps.else_if = 1; /* Default else-if special processing to on */
114 s_lab = e_lab = labbuf + 1;
115 s_code = e_code = codebuf + 1;
116 s_com = e_com = combuf + 1;
117 s_token = e_token = tokenbuf + 1;
118
119 in_buffer = (char *) malloc(10);
120 if (in_buffer == NULL)
121 err(1, NULL);
122 in_buffer_limit = in_buffer + 8;
123 buf_ptr = buf_end = in_buffer;
124 line_no = 1;
125 had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
126 sp_sw = force_nl = false;
127 ps.in_or_st = false;
128 ps.bl_line = true;
129 dec_ind = 0;
130 di_stack[ps.dec_nest = 0] = 0;
131 ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
132
133 scase = ps.pcase = false;
134 squest = 0;
135 sc_end = NULL;
136 bp_save = NULL;
137 be_save = NULL;
138
139 output = NULL;
140 tabs_to_var = 0;
141
142 /*--------------------------------------------------*\
143 | COMMAND LINE SCAN |
144 \*--------------------------------------------------*/
145
146 #ifdef undef
147 max_col = 78; /* -l78 */
148 lineup_to_parens = 1; /* -lp */
149 ps.ljust_decl = 0; /* -ndj */
150 ps.com_ind = 33; /* -c33 */
151 star_comment_cont = 1; /* -sc */
152 ps.ind_size = 8; /* -i8 */
153 verbose = 0;
154 ps.decl_indent = 16; /* -di16 */
155 ps.local_decl_indent = -1; /* if this is not set to some nonnegative value
156 * by an arg, we will set this equal to
157 * ps.decl_ind */
158 ps.indent_parameters = 1; /* -ip */
159 ps.decl_com_ind = 0; /* if this is not set to some positive value
160 * by an arg, we will set this equal to
161 * ps.com_ind */
162 btype_2 = 1; /* -br */
163 cuddle_else = 1; /* -ce */
164 ps.unindent_displace = 0; /* -d0 */
165 ps.case_indent = 0; /* -cli0 */
166 format_block_comments = 1; /* -fcb */
167 format_col1_comments = 1; /* -fc1 */
168 procnames_start_line = 1; /* -psl */
169 proc_calls_space = 0; /* -npcs */
170 comment_delimiter_on_blankline = 1; /* -cdb */
171 ps.leave_comma = 1; /* -nbc */
172 #endif
173
174 for (i = 1; i < argc; ++i)
175 if (strcmp(argv[i], "-npro") == 0)
176 break;
177 set_defaults();
178 if (i >= argc)
179 set_profile();
180
181 for (i = 1; i < argc; ++i) {
182
183 /*
184 * look thru args (if any) for changes to defaults
185 */
186 if (argv[i][0] != '-') { /* no flag on parameter */
187 if (input == NULL) { /* we must have the input file */
188 in_name = argv[i]; /* remember name of input file */
189 input = fopen(in_name, "r");
190 if (input == NULL) /* check for open error */
191 err(1, "%s", in_name);
192 continue;
193 }
194 else if (output == NULL) { /* we have the output file */
195 out_name = argv[i]; /* remember name of output file */
196 if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite
197 * the file */
198 errx(1, "input and output files must be different");
199 }
200 output = fopen(out_name, "w");
201 if (output == NULL) /* check for create error */
202 err(1, "%s", out_name);
203 continue;
204 }
205 errx(1, "unknown parameter: %s", argv[i]);
206 }
207 else
208 set_option(argv[i]);
209 } /* end of for */
210 if (input == NULL)
211 input = stdin;
212 if (output == NULL) {
213 if (troff || input == stdin)
214 output = stdout;
215 else {
216 out_name = in_name;
217 bakcopy();
218 }
219 }
220 if (ps.com_ind <= 1)
221 ps.com_ind = 2; /* dont put normal comments before column 2 */
222 if (troff) {
223 if (bodyf.font[0] == 0)
224 parsefont(&bodyf, "R");
225 if (scomf.font[0] == 0)
226 parsefont(&scomf, "I");
227 if (blkcomf.font[0] == 0)
228 blkcomf = scomf, blkcomf.size += 2;
229 if (boxcomf.font[0] == 0)
230 boxcomf = blkcomf;
231 if (stringf.font[0] == 0)
232 parsefont(&stringf, "L");
233 if (keywordf.font[0] == 0)
234 parsefont(&keywordf, "B");
235 writefdef(&bodyf, 'B');
236 writefdef(&scomf, 'C');
237 writefdef(&blkcomf, 'L');
238 writefdef(&boxcomf, 'X');
239 writefdef(&stringf, 'S');
240 writefdef(&keywordf, 'K');
241 }
242 if (block_comment_max_col <= 0)
243 block_comment_max_col = max_col;
244 if (ps.local_decl_indent < 0) /* if not specified by user, set this */
245 ps.local_decl_indent = ps.decl_indent;
246 if (ps.decl_com_ind <= 0) /* if not specified by user, set this */
247 ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
248 if (continuation_indent == 0)
249 continuation_indent = ps.ind_size;
250 fill_buffer(); /* get first batch of stuff into input buffer */
251
252 parse(semicolon);
253 {
254 char *p = buf_ptr;
255 int col = 1;
256
257 while (1) {
258 if (*p == ' ')
259 col++;
260 else if (*p == '\t')
261 col = ((col - 1) & ~7) + 9;
262 else
263 break;
264 p++;
265 }
266 if (col > ps.ind_size)
267 ps.ind_level = ps.i_l_follow = col / ps.ind_size;
268 }
269 if (troff) {
270 const char *p = in_name,
271 *beg = in_name;
272
273 while (*p)
274 if (*p++ == '/')
275 beg = p;
276 fprintf(output, ".Fn \"%s\"\n", beg);
277 }
278 /*
279 * START OF MAIN LOOP
280 */
281
282 while (1) { /* this is the main loop. it will go until we
283 * reach eof */
284 int is_procname;
285
286 type_code = lexi(); /* lexi reads one token. The actual
287 * characters read are stored in "token". lexi
288 * returns a code indicating the type of token */
289 is_procname = ps.procname[0];
290
291 /*
292 * The following code moves everything following an if (), while (),
293 * else, etc. up to the start of the following stmt to a buffer. This
294 * allows proper handling of both kinds of brace placement.
295 */
296
297 flushed_nl = false;
298 while (ps.search_brace) { /* if we scanned an if(), while(),
299 * etc., we might need to copy stuff
300 * into a buffer we must loop, copying
301 * stuff into save_com, until we find
302 * the start of the stmt which follows
303 * the if, or whatever */
304 switch (type_code) {
305 case newline:
306 ++line_no;
307 flushed_nl = true;
308 case form_feed:
309 break; /* form feeds and newlines found here will be
310 * ignored */
311
312 case lbrace: /* this is a brace that starts the compound
313 * stmt */
314 if (sc_end == NULL) { /* ignore buffering if a comment wasn't
315 * stored up */
316 ps.search_brace = false;
317 goto check_type;
318 }
319 if (btype_2) {
320 save_com[0] = '{'; /* we either want to put the brace
321 * right after the if */
322 goto sw_buffer; /* go to common code to get out of
323 * this loop */
324 }
325 case comment: /* we have a comment, so we must copy it into
326 * the buffer */
327 if (!flushed_nl || sc_end != NULL) {
328 if (sc_end == NULL) { /* if this is the first comment, we
329 * must set up the buffer */
330 save_com[0] = save_com[1] = ' ';
331 sc_end = &(save_com[2]);
332 }
333 else {
334 *sc_end++ = '\n'; /* add newline between
335 * comments */
336 *sc_end++ = ' ';
337 --line_no;
338 }
339 *sc_end++ = '/'; /* copy in start of comment */
340 *sc_end++ = '*';
341
342 for (;;) { /* loop until we get to the end of the comment */
343 *sc_end = *buf_ptr++;
344 if (buf_ptr >= buf_end)
345 fill_buffer();
346
347 if (*sc_end++ == '*' && *buf_ptr == '/')
348 break; /* we are at end of comment */
349
350 if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer
351 * overflow */
352 diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
353 fflush(output);
354 exit(1);
355 }
356 }
357 *sc_end++ = '/'; /* add ending slash */
358 if (++buf_ptr >= buf_end) /* get past / in buffer */
359 fill_buffer();
360 break;
361 }
362 default: /* it is the start of a normal statement */
363 if (flushed_nl) /* if we flushed a newline, make sure it is
364 * put back */
365 force_nl = true;
366 if ((type_code == sp_paren && *token == 'i'
367 && last_else && ps.else_if)
368 || (type_code == sp_nparen && *token == 'e'
369 && e_code != s_code && e_code[-1] == '}'))
370 force_nl = false;
371
372 if (sc_end == NULL) { /* ignore buffering if comment wasn't
373 * saved up */
374 ps.search_brace = false;
375 goto check_type;
376 }
377 if (force_nl) { /* if we should insert a nl here, put it into
378 * the buffer */
379 force_nl = false;
380 --line_no; /* this will be re-increased when the nl is
381 * read from the buffer */
382 *sc_end++ = '\n';
383 *sc_end++ = ' ';
384 if (verbose && !flushed_nl) /* print error msg if the line
385 * was not already broken */
386 diag2(0, "Line broken");
387 flushed_nl = false;
388 }
389 for (t_ptr = token; *t_ptr; ++t_ptr)
390 *sc_end++ = *t_ptr; /* copy token into temp buffer */
391 ps.procname[0] = 0;
392
393 sw_buffer:
394 ps.search_brace = false; /* stop looking for start of
395 * stmt */
396 bp_save = buf_ptr; /* save current input buffer */
397 be_save = buf_end;
398 buf_ptr = save_com; /* fix so that subsequent calls to
399 * lexi will take tokens out of
400 * save_com */
401 *sc_end++ = ' ';/* add trailing blank, just in case */
402 buf_end = sc_end;
403 sc_end = NULL;
404 break;
405 } /* end of switch */
406 if (type_code != 0) /* we must make this check, just in case there
407 * was an unexpected EOF */
408 type_code = lexi(); /* read another token */
409 /* if (ps.search_brace) ps.procname[0] = 0; */
410 if ((is_procname = ps.procname[0]) && flushed_nl
411 && !procnames_start_line && ps.in_decl
412 && type_code == ident)
413 flushed_nl = 0;
414 } /* end of while (search_brace) */
415 last_else = 0;
416 check_type:
417 if (type_code == 0) { /* we got eof */
418 if (s_lab != e_lab || s_code != e_code
419 || s_com != e_com) /* must dump end of line */
420 dump_line();
421 if (ps.tos > 1) /* check for balanced braces */
422 diag2(1, "Stuff missing from end of file");
423
424 if (verbose) {
425 printf("There were %d output lines and %d comments\n",
426 ps.out_lines, ps.out_coms);
427 printf("(Lines with comments)/(Lines with code): %6.3f\n",
428 (1.0 * ps.com_lines) / code_lines);
429 }
430 fflush(output);
431 exit(found_err);
432 }
433 if (
434 (type_code != comment) &&
435 (type_code != newline) &&
436 (type_code != preesc) &&
437 (type_code != form_feed)) {
438 if (force_nl &&
439 (type_code != semicolon) &&
440 (type_code != lbrace || !btype_2)) {
441 /* we should force a broken line here */
442 if (verbose && !flushed_nl)
443 diag2(0, "Line broken");
444 flushed_nl = false;
445 dump_line();
446 ps.want_blank = false; /* dont insert blank at line start */
447 force_nl = false;
448 }
449 ps.in_stmt = true; /* turn on flag which causes an extra level of
450 * indentation. this is turned off by a ; or
451 * '}' */
452 if (s_com != e_com) { /* the turkey has embedded a comment
453 * in a line. fix it */
454 *e_code++ = ' ';
455 for (t_ptr = s_com; *t_ptr; ++t_ptr) {
456 CHECK_SIZE_CODE;
457 *e_code++ = *t_ptr;
458 }
459 *e_code++ = ' ';
460 *e_code = '\0'; /* null terminate code sect */
461 ps.want_blank = false;
462 e_com = s_com;
463 }
464 }
465 else if (type_code != comment) /* preserve force_nl thru a comment */
466 force_nl = false; /* cancel forced newline after newline, form
467 * feed, etc */
468
469
470
471 /*-----------------------------------------------------*\
472 | do switch on type of token scanned |
473 \*-----------------------------------------------------*/
474 CHECK_SIZE_CODE;
475 switch (type_code) { /* now, decide what to do with the token */
476
477 case form_feed: /* found a form feed in line */
478 ps.use_ff = true; /* a form feed is treated much like a newline */
479 dump_line();
480 ps.want_blank = false;
481 break;
482
483 case newline:
484 if (ps.last_token != comma || ps.p_l_follow > 0
485 || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
486 dump_line();
487 ps.want_blank = false;
488 }
489 ++line_no; /* keep track of input line number */
490 break;
491
492 case lparen: /* got a '(' or '[' */
493 ++ps.p_l_follow; /* count parens to make Healy happy */
494 if (ps.want_blank && *token != '[' &&
495 (ps.last_token != ident || proc_calls_space
496 || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon))))
497 *e_code++ = ' ';
498 if (ps.in_decl && !ps.block_init)
499 if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) {
500 ps.dumped_decl_indent = 1;
501 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
502 e_code += strlen(e_code);
503 }
504 else {
505 while ((e_code - s_code) < dec_ind) {
506 CHECK_SIZE_CODE;
507 *e_code++ = ' ';
508 }
509 *e_code++ = token[0];
510 }
511 else
512 *e_code++ = token[0];
513 ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
514 if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
515 && ps.paren_indents[0] < 2 * ps.ind_size)
516 ps.paren_indents[0] = 2 * ps.ind_size;
517 ps.want_blank = false;
518 if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
519 /*
520 * this is a kluge to make sure that declarations will be
521 * aligned right if proc decl has an explicit type on it, i.e.
522 * "int a(x) {..."
523 */
524 parse(semicolon); /* I said this was a kluge... */
525 ps.in_or_st = false; /* turn off flag for structure decl or
526 * initialization */
527 }
528 if (ps.sizeof_keyword)
529 ps.sizeof_mask |= 1 << ps.p_l_follow;
530 break;
531
532 case rparen: /* got a ')' or ']' */
533 rparen_count--;
534 if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
535 ps.last_u_d = true;
536 ps.cast_mask &= (1 << ps.p_l_follow) - 1;
537 ps.want_blank = false;
538 } else
539 ps.want_blank = true;
540 ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
541 if (--ps.p_l_follow < 0) {
542 ps.p_l_follow = 0;
543 diag3(0, "Extra %c", *token);
544 }
545 if (e_code == s_code) /* if the paren starts the line */
546 ps.paren_level = ps.p_l_follow; /* then indent it */
547
548 *e_code++ = token[0];
549
550 if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if
551 * (...), or some such */
552 sp_sw = false;
553 force_nl = true;/* must force newline after if */
554 ps.last_u_d = true; /* inform lexi that a following
555 * operator is unary */
556 ps.in_stmt = false; /* dont use stmt continuation
557 * indentation */
558
559 parse(hd_type); /* let parser worry about if, or whatever */
560 }
561 ps.search_brace = btype_2; /* this should insure that constructs
562 * such as main(){...} and int[]{...}
563 * have their braces put in the right
564 * place */
565 break;
566
567 case unary_op: /* this could be any unary operation */
568 if (ps.want_blank)
569 *e_code++ = ' ';
570
571 if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) {
572 sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
573 ps.dumped_decl_indent = 1;
574 e_code += strlen(e_code);
575 }
576 else {
577 const char *res = token;
578
579 if (ps.in_decl && !ps.block_init) { /* if this is a unary op
580 * in a declaration, we
581 * should indent this
582 * token */
583 for (i = 0; token[i]; ++i); /* find length of token */
584 while ((e_code - s_code) < (dec_ind - i)) {
585 CHECK_SIZE_CODE;
586 *e_code++ = ' '; /* pad it */
587 }
588 }
589 if (troff && token[0] == '-' && token[1] == '>')
590 res = "\\(->";
591 for (t_ptr = res; *t_ptr; ++t_ptr) {
592 CHECK_SIZE_CODE;
593 *e_code++ = *t_ptr;
594 }
595 }
596 ps.want_blank = false;
597 break;
598
599 case binary_op: /* any binary operation */
600 if (ps.want_blank)
601 *e_code++ = ' ';
602 {
603 const char *res = token;
604
605 if (troff)
606 switch (token[0]) {
607 case '<':
608 if (token[1] == '=')
609 res = "\\(<=";
610 break;
611 case '>':
612 if (token[1] == '=')
613 res = "\\(>=";
614 break;
615 case '!':
616 if (token[1] == '=')
617 res = "\\(!=";
618 break;
619 case '|':
620 if (token[1] == '|')
621 res = "\\(br\\(br";
622 else if (token[1] == 0)
623 res = "\\(br";
624 break;
625 }
626 for (t_ptr = res; *t_ptr; ++t_ptr) {
627 CHECK_SIZE_CODE;
628 *e_code++ = *t_ptr; /* move the operator */
629 }
630 }
631 ps.want_blank = true;
632 break;
633
634 case postop: /* got a trailing ++ or -- */
635 *e_code++ = token[0];
636 *e_code++ = token[1];
637 ps.want_blank = true;
638 break;
639
640 case question: /* got a ? */
641 squest++; /* this will be used when a later colon
642 * appears so we can distinguish the
643 * <c>?<n>:<n> construct */
644 if (ps.want_blank)
645 *e_code++ = ' ';
646 *e_code++ = '?';
647 ps.want_blank = true;
648 break;
649
650 case casestmt: /* got word 'case' or 'default' */
651 scase = true; /* so we can process the later colon properly */
652 goto copy_id;
653
654 case colon: /* got a ':' */
655 if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */
656 --squest;
657 if (ps.want_blank)
658 *e_code++ = ' ';
659 *e_code++ = ':';
660 ps.want_blank = true;
661 break;
662 }
663 if (ps.in_or_st) {
664 *e_code++ = ':';
665 ps.want_blank = false;
666 break;
667 }
668 ps.in_stmt = false; /* seeing a label does not imply we are in a
669 * stmt */
670 for (t_ptr = s_code; *t_ptr; ++t_ptr)
671 *e_lab++ = *t_ptr; /* turn everything so far into a label */
672 e_code = s_code;
673 *e_lab++ = ':';
674 *e_lab++ = ' ';
675 *e_lab = '\0';
676
677 force_nl = ps.pcase = scase; /* ps.pcase will be used by
678 * dump_line to decide how to
679 * indent the label. force_nl
680 * will force a case n: to be
681 * on a line by itself */
682 scase = false;
683 ps.want_blank = false;
684 break;
685
686 case semicolon: /* got a ';' */
687 ps.in_or_st = false;/* we are not in an initialization or
688 * structure declaration */
689 scase = false; /* these will only need resetting in an error */
690 squest = 0;
691 if (ps.last_token == rparen && rparen_count == 0)
692 ps.in_parameter_declaration = 0;
693 ps.cast_mask = 0;
694 ps.sizeof_mask = 0;
695 ps.block_init = 0;
696 ps.block_init_level = 0;
697 ps.just_saw_decl--;
698
699 if (ps.in_decl && s_code == e_code && !ps.block_init)
700 while ((e_code - s_code) < (dec_ind - 1)) {
701 CHECK_SIZE_CODE;
702 *e_code++ = ' ';
703 }
704
705 ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level
706 * structure declaration, we
707 * arent any more */
708
709 if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
710
711 /*
712 * This should be true iff there were unbalanced parens in the
713 * stmt. It is a bit complicated, because the semicolon might
714 * be in a for stmt
715 */
716 diag2(1, "Unbalanced parens");
717 ps.p_l_follow = 0;
718 if (sp_sw) { /* this is a check for an if, while, etc. with
719 * unbalanced parens */
720 sp_sw = false;
721 parse(hd_type); /* dont lose the if, or whatever */
722 }
723 }
724 *e_code++ = ';';
725 ps.want_blank = true;
726 ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the
727 * middle of a stmt */
728
729 if (!sp_sw) { /* if not if for (;;) */
730 parse(semicolon); /* let parser know about end of stmt */
731 force_nl = true;/* force newline after an end of stmt */
732 }
733 break;
734
735 case lbrace: /* got a '{' */
736 ps.in_stmt = false; /* dont indent the {} */
737 if (!ps.block_init)
738 force_nl = true;/* force other stuff on same line as '{' onto
739 * new line */
740 else if (ps.block_init_level <= 0)
741 ps.block_init_level = 1;
742 else
743 ps.block_init_level++;
744
745 if (s_code != e_code && !ps.block_init) {
746 if (!btype_2) {
747 dump_line();
748 ps.want_blank = false;
749 }
750 else if (ps.in_parameter_declaration && !ps.in_or_st) {
751 ps.i_l_follow = 0;
752 if (function_brace_split) { /* dump the line prior to the
753 * brace ... */
754 dump_line();
755 ps.want_blank = false;
756 } else /* add a space between the decl and brace */
757 ps.want_blank = true;
758 }
759 }
760 if (ps.in_parameter_declaration)
761 prefix_blankline_requested = 0;
762
763 if (ps.p_l_follow > 0) { /* check for preceding unbalanced
764 * parens */
765 diag2(1, "Unbalanced parens");
766 ps.p_l_follow = 0;
767 if (sp_sw) { /* check for unclosed if, for, etc. */
768 sp_sw = false;
769 parse(hd_type);
770 ps.ind_level = ps.i_l_follow;
771 }
772 }
773 if (s_code == e_code)
774 ps.ind_stmt = false; /* dont put extra indentation on line
775 * with '{' */
776 if (ps.in_decl && ps.in_or_st) { /* this is either a structure
777 * declaration or an init */
778 di_stack[ps.dec_nest++] = dec_ind;
779 /* ? dec_ind = 0; */
780 }
781 else {
782 ps.decl_on_line = false; /* we can't be in the middle of
783 * a declaration, so don't do
784 * special indentation of
785 * comments */
786 if (blanklines_after_declarations_at_proctop
787 && ps.in_parameter_declaration)
788 postfix_blankline_requested = 1;
789 ps.in_parameter_declaration = 0;
790 }
791 dec_ind = 0;
792 parse(lbrace); /* let parser know about this */
793 if (ps.want_blank) /* put a blank before '{' if '{' is not at
794 * start of line */
795 *e_code++ = ' ';
796 ps.want_blank = false;
797 *e_code++ = '{';
798 ps.just_saw_decl = 0;
799 break;
800
801 case rbrace: /* got a '}' */
802 if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
803 * omitted in
804 * declarations */
805 parse(semicolon);
806 if (ps.p_l_follow) {/* check for unclosed if, for, else. */
807 diag2(1, "Unbalanced parens");
808 ps.p_l_follow = 0;
809 sp_sw = false;
810 }
811 ps.just_saw_decl = 0;
812 ps.block_init_level--;
813 if (s_code != e_code && !ps.block_init) { /* '}' must be first on
814 * line */
815 if (verbose)
816 diag2(0, "Line broken");
817 dump_line();
818 }
819 *e_code++ = '}';
820 ps.want_blank = true;
821 ps.in_stmt = ps.ind_stmt = false;
822 if (ps.dec_nest > 0) { /* we are in multi-level structure
823 * declaration */
824 dec_ind = di_stack[--ps.dec_nest];
825 if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
826 ps.just_saw_decl = 2;
827 ps.in_decl = true;
828 }
829 prefix_blankline_requested = 0;
830 parse(rbrace); /* let parser know about this */
831 ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
832 && ps.il[ps.tos] >= ps.ind_level;
833 if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
834 postfix_blankline_requested = 1;
835 break;
836
837 case swstmt: /* got keyword "switch" */
838 sp_sw = true;
839 hd_type = swstmt; /* keep this for when we have seen the
840 * expression */
841 goto copy_id; /* go move the token into buffer */
842
843 case sp_paren: /* token is if, while, for */
844 sp_sw = true; /* the interesting stuff is done after the
845 * expression is scanned */
846 hd_type = (*token == 'i' ? ifstmt :
847 (*token == 'w' ? whilestmt : forstmt));
848
849 /*
850 * remember the type of header for later use by parser
851 */
852 goto copy_id; /* copy the token into line */
853
854 case sp_nparen: /* got else, do */
855 ps.in_stmt = false;
856 if (*token == 'e') {
857 if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
858 if (verbose)
859 diag2(0, "Line broken");
860 dump_line();/* make sure this starts a line */
861 ps.want_blank = false;
862 }
863 force_nl = true;/* also, following stuff must go onto new line */
864 last_else = 1;
865 parse(elselit);
866 }
867 else {
868 if (e_code != s_code) { /* make sure this starts a line */
869 if (verbose)
870 diag2(0, "Line broken");
871 dump_line();
872 ps.want_blank = false;
873 }
874 force_nl = true;/* also, following stuff must go onto new line */
875 last_else = 0;
876 parse(dolit);
877 }
878 goto copy_id; /* move the token into line */
879
880 case decl: /* we have a declaration type (int, register,
881 * etc.) */
882 parse(decl); /* let parser worry about indentation */
883 if (ps.last_token == rparen && ps.tos <= 1) {
884 ps.in_parameter_declaration = 1;
885 if (s_code != e_code) {
886 dump_line();
887 ps.want_blank = 0;
888 }
889 }
890 if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
891 ps.ind_level = ps.i_l_follow = 1;
892 ps.ind_stmt = 0;
893 }
894 ps.in_or_st = true; /* this might be a structure or initialization
895 * declaration */
896 ps.in_decl = ps.decl_on_line = true;
897 if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
898 ps.just_saw_decl = 2;
899 prefix_blankline_requested = 0;
900 for (i = 0; token[i++];); /* get length of token */
901
902 if (ps.ind_level == 0 || ps.dec_nest > 0) {
903 /* global variable or struct member in local variable */
904 dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
905 tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0);
906 } else {
907 /* local variable */
908 dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i;
909 tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0);
910 }
911 goto copy_id;
912
913 case ident: /* got an identifier or constant */
914 if (ps.in_decl) { /* if we are in a declaration, we must indent
915 * identifier */
916 if (is_procname == 0 || !procnames_start_line) {
917 if (!ps.block_init) {
918 if (troff && !ps.dumped_decl_indent) {
919 if (ps.want_blank)
920 *e_code++ = ' ';
921 ps.want_blank = false;
922 sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
923 ps.dumped_decl_indent = 1;
924 e_code += strlen(e_code);
925 } else {
926 int cur_dec_ind;
927 int pos, startpos;
928
929 /*
930 * in order to get the tab math right for
931 * indentations that are not multiples of 8 we
932 * need to modify both startpos and dec_ind
933 * (cur_dec_ind) here by eight minus the
934 * remainder of the current starting column
935 * divided by eight. This seems to be a
936 * properly working fix
937 */
938 startpos = e_code - s_code;
939 cur_dec_ind = dec_ind;
940 pos = startpos;
941 if ((ps.ind_level * ps.ind_size) % 8 != 0) {
942 pos += (ps.ind_level * ps.ind_size) % 8;
943 cur_dec_ind += (ps.ind_level * ps.ind_size) % 8;
944 }
945
946 if (tabs_to_var) {
947 while ((pos & ~7) + 8 <= cur_dec_ind) {
948 CHECK_SIZE_CODE;
949 *e_code++ = '\t';
950 pos = (pos & ~7) + 8;
951 }
952 }
953 while (pos < cur_dec_ind) {
954 CHECK_SIZE_CODE;
955 *e_code++ = ' ';
956 pos++;
957 }
958 if (ps.want_blank && e_code - s_code == startpos)
959 *e_code++ = ' ';
960 ps.want_blank = false;
961 }
962 }
963 } else {
964 if (ps.want_blank)
965 *e_code++ = ' ';
966 ps.want_blank = false;
967 if (dec_ind && s_code != e_code)
968 dump_line();
969 dec_ind = 0;
970 }
971 }
972 else if (sp_sw && ps.p_l_follow == 0) {
973 sp_sw = false;
974 force_nl = true;
975 ps.last_u_d = true;
976 ps.in_stmt = false;
977 parse(hd_type);
978 }
979 copy_id:
980 if (ps.want_blank)
981 *e_code++ = ' ';
982 if (troff && ps.its_a_keyword) {
983 e_code = chfont(&bodyf, &keywordf, e_code);
984 for (t_ptr = token; *t_ptr; ++t_ptr) {
985 CHECK_SIZE_CODE;
986 *e_code++ = keywordf.allcaps && islower(*t_ptr)
987 ? toupper(*t_ptr) : *t_ptr;
988 }
989 e_code = chfont(&keywordf, &bodyf, e_code);
990 }
991 else
992 for (t_ptr = token; *t_ptr; ++t_ptr) {
993 CHECK_SIZE_CODE;
994 *e_code++ = *t_ptr;
995 }
996 ps.want_blank = true;
997 break;
998
999 case period: /* treat a period kind of like a binary
1000 * operation */
1001 *e_code++ = '.'; /* move the period into line */
1002 ps.want_blank = false; /* dont put a blank after a period */
1003 break;
1004
1005 case comma:
1006 ps.want_blank = (s_code != e_code); /* only put blank after comma
1007 * if comma does not start the
1008 * line */
1009 if (ps.in_decl && is_procname == 0 && !ps.block_init)
1010 while ((e_code - s_code) < (dec_ind - 1)) {
1011 CHECK_SIZE_CODE;
1012 *e_code++ = ' ';
1013 }
1014
1015 *e_code++ = ',';
1016 if (ps.p_l_follow == 0) {
1017 if (ps.block_init_level <= 0)
1018 ps.block_init = 0;
1019 if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8))
1020 force_nl = true;
1021 }
1022 break;
1023
1024 case preesc: /* got the character '#' */
1025 if ((s_com != e_com) ||
1026 (s_lab != e_lab) ||
1027 (s_code != e_code))
1028 dump_line();
1029 *e_lab++ = '#'; /* move whole line to 'label' buffer */
1030 {
1031 int in_comment = 0;
1032 int com_start = 0;
1033 char quote = 0;
1034 int com_end = 0;
1035
1036 while (*buf_ptr == ' ' || *buf_ptr == '\t') {
1037 buf_ptr++;
1038 if (buf_ptr >= buf_end)
1039 fill_buffer();
1040 }
1041 while (*buf_ptr != '\n' || (in_comment && !had_eof)) {
1042 CHECK_SIZE_LAB;
1043 *e_lab = *buf_ptr++;
1044 if (buf_ptr >= buf_end)
1045 fill_buffer();
1046 switch (*e_lab++) {
1047 case BACKSLASH:
1048 if (troff)
1049 *e_lab++ = BACKSLASH;
1050 if (!in_comment) {
1051 *e_lab++ = *buf_ptr++;
1052 if (buf_ptr >= buf_end)
1053 fill_buffer();
1054 }
1055 break;
1056 case '/':
1057 if (*buf_ptr == '*' && !in_comment && !quote) {
1058 in_comment = 1;
1059 *e_lab++ = *buf_ptr++;
1060 com_start = e_lab - s_lab - 2;
1061 }
1062 break;
1063 case '"':
1064 if (quote == '"')
1065 quote = 0;
1066 break;
1067 case '\'':
1068 if (quote == '\'')
1069 quote = 0;
1070 break;
1071 case '*':
1072 if (*buf_ptr == '/' && in_comment) {
1073 in_comment = 0;
1074 *e_lab++ = *buf_ptr++;
1075 com_end = e_lab - s_lab;
1076 }
1077 break;
1078 }
1079 }
1080
1081 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1082 e_lab--;
1083 if (e_lab - s_lab == com_end && bp_save == NULL) {
1084 /* comment on preprocessor line */
1085 if (sc_end == NULL) /* if this is the first comment, we
1086 * must set up the buffer */
1087 sc_end = &(save_com[0]);
1088 else {
1089 *sc_end++ = '\n'; /* add newline between
1090 * comments */
1091 *sc_end++ = ' ';
1092 --line_no;
1093 }
1094 bcopy(s_lab + com_start, sc_end, com_end - com_start);
1095 sc_end += com_end - com_start;
1096 if (sc_end >= &save_com[sc_size])
1097 abort();
1098 e_lab = s_lab + com_start;
1099 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
1100 e_lab--;
1101 bp_save = buf_ptr; /* save current input buffer */
1102 be_save = buf_end;
1103 buf_ptr = save_com; /* fix so that subsequent calls to
1104 * lexi will take tokens out of
1105 * save_com */
1106 *sc_end++ = ' '; /* add trailing blank, just in case */
1107 buf_end = sc_end;
1108 sc_end = NULL;
1109 }
1110 *e_lab = '\0'; /* null terminate line */
1111 ps.pcase = false;
1112 }
1113
1114 if (strncmp(s_lab, "#if", 3) == 0) {
1115 if (blanklines_around_conditional_compilation) {
1116 int c;
1117 prefix_blankline_requested++;
1118 while ((c = getc(input)) == '\n');
1119 ungetc(c, input);
1120 }
1121 if ((size_t)ifdef_level < sizeof(state_stack)/sizeof(state_stack[0])) {
1122 match_state[ifdef_level].tos = -1;
1123 state_stack[ifdef_level++] = ps;
1124 }
1125 else
1126 diag2(1, "#if stack overflow");
1127 }
1128 else if (strncmp(s_lab, "#else", 5) == 0)
1129 if (ifdef_level <= 0)
1130 diag2(1, "Unmatched #else");
1131 else {
1132 match_state[ifdef_level - 1] = ps;
1133 ps = state_stack[ifdef_level - 1];
1134 }
1135 else if (strncmp(s_lab, "#endif", 6) == 0) {
1136 if (ifdef_level <= 0)
1137 diag2(1, "Unmatched #endif");
1138 else {
1139 ifdef_level--;
1140
1141 #ifdef undef
1142 /*
1143 * This match needs to be more intelligent before the
1144 * message is useful
1145 */
1146 if (match_state[ifdef_level].tos >= 0
1147 && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
1148 diag2(0, "Syntactically inconsistent #ifdef alternatives");
1149 #endif
1150 }
1151 if (blanklines_around_conditional_compilation) {
1152 postfix_blankline_requested++;
1153 n_real_blanklines = 0;
1154 }
1155 }
1156 break; /* subsequent processing of the newline
1157 * character will cause the line to be printed */
1158
1159 case comment: /* we have gotten a / followed by * this is a biggie */
1160 if (flushed_nl) { /* we should force a broken line here */
1161 flushed_nl = false;
1162 dump_line();
1163 ps.want_blank = false; /* dont insert blank at line start */
1164 force_nl = false;
1165 }
1166 pr_comment();
1167 break;
1168 } /* end of big switch stmt */
1169
1170 *e_code = '\0'; /* make sure code section is null terminated */
1171 if (type_code != comment && type_code != newline && type_code != preesc)
1172 ps.last_token = type_code;
1173 } /* end of main while (1) loop */
1174 }
1175
1176 /*
1177 * copy input file to backup file if in_name is /blah/blah/blah/file, then
1178 * backup file will be ".Bfile" then make the backup file the input and
1179 * original input file the output
1180 */
1181 static void
1182 bakcopy(void)
1183 {
1184 int n,
1185 bakchn;
1186 char buff[8 * 1024];
1187 const char *p;
1188
1189 /* construct file name .Bfile */
1190 for (p = in_name; *p; p++); /* skip to end of string */
1191 while (p > in_name && *p != '/') /* find last '/' */
1192 p--;
1193 if (*p == '/')
1194 p++;
1195 sprintf(bakfile, "%s.BAK", p);
1196
1197 /* copy in_name to backup file */
1198 bakchn = creat(bakfile, 0600);
1199 if (bakchn < 0)
1200 err(1, "%s", bakfile);
1201 while ((n = read(fileno(input), buff, sizeof buff)) != 0)
1202 if (write(bakchn, buff, n) != n)
1203 err(1, "%s", bakfile);
1204 if (n < 0)
1205 err(1, "%s", in_name);
1206 close(bakchn);
1207 fclose(input);
1208
1209 /* re-open backup file as the input file */
1210 input = fopen(bakfile, "r");
1211 if (input == NULL)
1212 err(1, "%s", bakfile);
1213 /* now the original input file will be the output */
1214 output = fopen(in_name, "w");
1215 if (output == NULL) {
1216 unlink(bakfile);
1217 err(1, "%s", in_name);
1218 }
1219 }
DragonFly BSD