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[netbsd-mini2440.git] / usr.bin / indent / io.c
blob42e69a56f947bc03661ac5beea9ac5e0f3a84db3
1 /* $NetBSD: io.c,v 1.13 2003/10/16 06:51:22 itojun Exp $ */
2
3 /*
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
32 /*
33 * Copyright (c) 1976 Board of Trustees of the University of Illinois.
34 * Copyright (c) 1985 Sun Microsystems, Inc.
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by the University of
48 * California, Berkeley and its contributors.
49 * 4. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 */
65
66 #include <sys/cdefs.h>
67 #ifndef lint
68 #if 0
69 static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 6/6/93";
70 #else
71 __RCSID("$NetBSD: io.c,v 1.13 2003/10/16 06:51:22 itojun Exp $");
72 #endif
73 #endif /* not lint */
74
75 #include <ctype.h>
76 #include <err.h>
77 #include <stdarg.h>
78 #include <stdio.h>
79 #include <stdlib.h>
80 #include <string.h>
81 #include "indent_globs.h"
82
83 int comment_open;
84 static int paren_target;
85
86 void
87 dump_line(void)
88 { /* dump_line is the routine that actually
89 * effects the printing of the new source. It
90 * prints the label section, followed by the
91 * code section with the appropriate nesting
92 * level, followed by any comments */
93 int cur_col, target_col;
94 static int not_first_line;
95
96 target_col = 0;
97 if (ps.procname[0]) {
98 if (troff) {
99 if (comment_open) {
100 comment_open = 0;
101 fprintf(output, ".*/\n");
102 }
103 fprintf(output, ".Pr \"%s\"\n", ps.procname);
104 }
105 ps.ind_level = 0;
106 ps.procname[0] = 0;
107 }
108 if (s_code == e_code && s_lab == e_lab && s_com == e_com) {
109 if (suppress_blanklines > 0)
110 suppress_blanklines--;
111 else {
112 ps.bl_line = true;
113 n_real_blanklines++;
114 }
115 } else
116 if (!inhibit_formatting) {
117 suppress_blanklines = 0;
118 ps.bl_line = false;
119 if (prefix_blankline_requested && not_first_line) {
120 if (swallow_optional_blanklines) {
121 if (n_real_blanklines == 1)
122 n_real_blanklines = 0;
123 } else {
124 if (n_real_blanklines == 0)
125 n_real_blanklines = 1;
126 }
127 }
128 while (--n_real_blanklines >= 0)
129 putc('\n', output);
130 n_real_blanklines = 0;
131 if (ps.ind_level == 0)
132 ps.ind_stmt = 0; /* this is a class A
133 * kludge. dont do
134 * additional statement
135 * indentation if we are
136 * at bracket level 0 */
137
138 if (e_lab != s_lab || e_code != s_code)
139 ++code_lines; /* keep count of lines with
140 * code */
141
142
143 if (e_lab != s_lab) { /* print lab, if any */
144 if (comment_open) {
145 comment_open = 0;
146 fprintf(output, ".*/\n");
147 }
148 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
149 e_lab--;
150 cur_col = pad_output(1, compute_label_target());
151 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0
152 || strncmp(s_lab, "#endif", 6) == 0)) {
153 char *s = s_lab;
154 if (e_lab[-1] == '\n')
155 e_lab--;
156 do
157 putc(*s++, output);
158 while (s < e_lab && 'a' <= *s && *s <= 'z');
159 while ((*s == ' ' || *s == '\t') && s < e_lab)
160 s++;
161 if (s < e_lab)
162 fprintf(output, s[0] == '/' && s[1] == '*' ? "\t%.*s" : "\t/* %.*s */",
163 (int)(e_lab - s), s);
164 } else
165 fprintf(output, "%.*s", (int)(e_lab - s_lab), s_lab);
166 cur_col = count_spaces(cur_col, s_lab);
167 } else
168 cur_col = 1; /* there is no label section */
169
170 ps.pcase = false;
171
172 if (s_code != e_code) { /* print code section, if any */
173 char *p;
174
175 if (comment_open) {
176 comment_open = 0;
177 fprintf(output, ".*/\n");
178 }
179 target_col = compute_code_target();
180 {
181 int i;
182
183 for (i = 0; i < ps.p_l_follow; i++)
184 if (ps.paren_indents[i] >= 0)
185 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col);
186 }
187 cur_col = pad_output(cur_col, target_col);
188 for (p = s_code; p < e_code; p++)
189 if (*p == (char) 0200)
190 fprintf(output, "%d", target_col * 7);
191 else
192 putc(*p, output);
193 cur_col = count_spaces(cur_col, s_code);
194 }
195 if (s_com != e_com) {
196 if (troff) {
197 int all_here = 0;
198 char *p;
199
200 if (e_com[-1] == '/' && e_com[-2] == '*')
201 e_com -= 2, all_here++;
202 while (e_com > s_com && e_com[-1] == ' ')
203 e_com--;
204 *e_com = 0;
205 p = s_com;
206 while (*p == ' ')
207 p++;
208 if (p[0] == '/' && p[1] == '*')
209 p += 2, all_here++;
210 else
211 if (p[0] == '*')
212 p += p[1] == '/' ? 2 : 1;
213 while (*p == ' ')
214 p++;
215 if (*p == 0)
216 goto inhibit_newline;
217 if (comment_open < 2 && ps.box_com) {
218 comment_open = 0;
219 fprintf(output, ".*/\n");
220 }
221 if (comment_open == 0) {
222 if ('a' <= *p && *p <= 'z')
223 *p = *p + 'A' - 'a';
224 if (e_com - p < 50 && all_here == 2) {
225 char *follow = p;
226 fprintf(output, "\n.nr C! \\w\1");
227 while (follow < e_com) {
228 switch (*follow) {
229 case '\n':
230 putc(' ', output);
231 case 1:
232 break;
233 case '\\':
234 putc('\\', output);
235 default:
236 putc(*follow, output);
237 }
238 follow++;
239 }
240 putc(1, output);
241 }
242 fprintf(output, "\n./* %dp %d %dp\n",
243 ps.com_col * 7,
244 (s_code != e_code || s_lab != e_lab) - ps.box_com,
245 target_col * 7);
246 }
247 comment_open = 1 + ps.box_com;
248 while (*p) {
249 if (*p == BACKSLASH)
250 putc(BACKSLASH, output);
251 putc(*p++, output);
252 }
253 } else { /* print comment, if any */
254 int target = ps.com_col;
255 char *com_st = s_com;
256
257 target += ps.comment_delta;
258 while (*com_st == '\t')
259 com_st++, target += 8; /* ? */
260 while (target <= 0)
261 if (*com_st == ' ')
262 target++, com_st++;
263 else
264 if (*com_st == '\t')
265 target = ((target - 1) & ~7) + 9, com_st++;
266 else
267 target = 1;
268 if (cur_col > target) { /* if comment cant fit
269 * on this line, put it
270 * on next line */
271 putc('\n', output);
272 cur_col = 1;
273 ++ps.out_lines;
274 }
275 while (e_com > com_st
276 && isspace((unsigned char)e_com[-1]))
277 e_com--;
278 cur_col = pad_output(cur_col, target);
279 if (!ps.box_com) {
280 if (star_comment_cont
281 && (com_st[1] != '*'
282 || e_com <= com_st + 1)) {
283 if (com_st[1] == ' '
284 && com_st[0] == ' '
285 && e_com > com_st + 1)
286 com_st[1] = '*';
287 else
288 fwrite(" * ",
289 com_st[0] == '\t'
290 ? 2
291 : com_st[0]=='*'
292 ? 1
293 : 3, 1, output);
294 }
295 }
296 fwrite(com_st,
297 e_com - com_st, 1, output);
298 ps.comment_delta = ps.n_comment_delta;
299 cur_col = count_spaces(cur_col, com_st);
300 ++ps.com_lines; /* count lines with
301 * comments */
302 }
303 }
304 if (ps.use_ff)
305 putc('\014', output);
306 else
307 putc('\n', output);
308 inhibit_newline:
309 ++ps.out_lines;
310 if (ps.just_saw_decl == 1 && blanklines_after_declarations) {
311 prefix_blankline_requested = 1;
312 ps.just_saw_decl = 0;
313 } else
314 prefix_blankline_requested = postfix_blankline_requested;
315 postfix_blankline_requested = 0;
316 }
317 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a
318 * declaration, remember that fact for
319 * proper comment indentation */
320 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be
321 * indented if we have not
322 * completed this stmt and if
323 * we are not in the middle of
324 * a declaration */
325 ps.use_ff = false;
326 ps.dumped_decl_indent = 0;
327 *(e_lab = s_lab) = '\0';/* reset buffers */
328 *(e_code = s_code) = '\0';
329 *(e_com = s_com) = '\0';
330 ps.ind_level = ps.i_l_follow;
331 ps.paren_level = ps.p_l_follow;
332 paren_target = -ps.paren_indents[ps.paren_level - 1];
333 not_first_line = 1;
334 }
335
336 int
337 compute_code_target(void)
338 {
339 int target_col = ps.ind_size * ps.ind_level + 1;
340
341 if (ps.paren_level) {
342 if (!lineup_to_parens)
343 target_col += continuation_indent * ps.paren_level;
344 else {
345 int w;
346 int t = paren_target;
347
348 if ((w = count_spaces(t, s_code) - max_col) > 0
349 && count_spaces(target_col, s_code) <= max_col) {
350 t -= w + 1;
351 if (t > target_col)
352 target_col = t;
353 } else
354 target_col = t;
355 }
356 } else
357 if (ps.ind_stmt)
358 target_col += continuation_indent;
359 return target_col;
360 }
361
362 int
363 compute_label_target(void)
364 {
365 return
366 ps.pcase ? (int) (case_ind * ps.ind_size) + 1
367 : *s_lab == '#' ? 1
368 : ps.ind_size * (ps.ind_level - label_offset) + 1;
369 }
370
371
372 /*
373 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
374 *
375 * All rights reserved
376 *
377 *
378 * NAME: fill_buffer
379 *
380 * FUNCTION: Reads one block of input into input_buffer
381 *
382 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A
383 * Willcox of CAC Added check for switch back to partly full input
384 * buffer from temporary buffer
385 *
386 */
387 void
388 fill_buffer(void)
389 { /* this routine reads stuff from the input */
390 char *p;
391 int i;
392 FILE *f = input;
393 char *n;
394
395 if (bp_save != 0) { /* there is a partly filled input buffer left */
396 buf_ptr = bp_save; /* dont read anything, just switch
397 * buffers */
398 buf_end = be_save;
399 bp_save = be_save = 0;
400 if (buf_ptr < buf_end)
401 return; /* only return if there is really something in
402 * this buffer */
403 }
404 for (p = in_buffer;;) {
405 if (p >= in_buffer_limit) {
406 int size = (in_buffer_limit - in_buffer) * 2 + 10;
407 int offset = p - in_buffer;
408 n = (char *) realloc(in_buffer, size);
409 if (n == 0)
410 errx(1, "input line too long");
411 in_buffer = n;
412 p = in_buffer + offset;
413 in_buffer_limit = in_buffer + size - 2;
414 }
415 if ((i = getc(f)) == EOF) {
416 *p++ = ' ';
417 *p++ = '\n';
418 had_eof = true;
419 break;
420 }
421 *p++ = i;
422 if (i == '\n')
423 break;
424 }
425 buf_ptr = in_buffer;
426 buf_end = p;
427 if (p[-2] == '/' && p[-3] == '*') {
428 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0)
429 fill_buffer(); /* flush indent error message */
430 else {
431 int com = 0;
432
433 p = in_buffer;
434 while (*p == ' ' || *p == '\t')
435 p++;
436 if (*p == '/' && p[1] == '*') {
437 p += 2;
438 while (*p == ' ' || *p == '\t')
439 p++;
440 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E'
441 && p[4] == 'N' && p[5] == 'T') {
442 p += 6;
443 while (*p == ' ' || *p == '\t')
444 p++;
445 if (*p == '*')
446 com = 1;
447 else {
448 if (*p == 'O') {
449 if (*++p == 'N')
450 p++, com = 1;
451 else
452 if (*p == 'F' && *++p == 'F')
453 p++, com = 2;
454 }
455 }
456 while (*p == ' ' || *p == '\t')
457 p++;
458 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) {
459 if (s_com != e_com || s_lab != e_lab || s_code != e_code)
460 dump_line();
461 if (!(inhibit_formatting = com - 1)) {
462 n_real_blanklines = 0;
463 postfix_blankline_requested = 0;
464 prefix_blankline_requested = 0;
465 suppress_blanklines = 1;
466 }
467 }
468 }
469 }
470 }
471 }
472 if (inhibit_formatting) {
473 p = in_buffer;
474 do
475 putc(*p, output);
476 while (*p++ != '\n');
477 }
478 }
479 /*
480 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
481 *
482 * All rights reserved
483 *
484 *
485 * NAME: pad_output
486 *
487 * FUNCTION: Writes tabs and spaces to move the current column up to the desired
488 * position.
489 *
490 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf.
491 *
492 * PARAMETERS: current integer The current column target
493 * target integer The desired column
494 *
495 * RETURNS: Integer value of the new column. (If current >= target, no action is
496 * taken, and current is returned.
497 *
498 * GLOBALS: None
499 *
500 * CALLS: write (sys)
501 *
502 * CALLED BY: dump_line
503 *
504 * HISTORY: initial coding November 1976 D A Willcox of CAC
505 *
506 */
507 int
508 pad_output(int current, int target)
509 {
510 int curr; /* internal column pointer */
511 int tcur;
512
513 if (troff)
514 fprintf(output, "\\h'|%dp'", (target - 1) * 7);
515 else {
516 if (current >= target)
517 return (current); /* line is already long enough */
518 curr = current;
519 while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) {
520 putc('\t', output);
521 curr = tcur;
522 }
523 while (curr++ < target)
524 putc(' ', output); /* pad with final blanks */
525 }
526 return (target);
527 }
528 /*
529 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
530 *
531 * All rights reserved
532 *
533 *
534 * NAME: count_spaces
535 *
536 * FUNCTION: Find out where printing of a given string will leave the current
537 * character position on output.
538 *
539 * ALGORITHM: Run thru input string and add appropriate values to current
540 * position.
541 *
542 * RETURNS: Integer value of position after printing "buffer" starting in column
543 * "current".
544 *
545 * HISTORY: initial coding November 1976 D A Willcox of CAC
546 *
547 */
548 int
549 count_spaces(int current, char *buffer)
550 /*
551 * this routine figures out where the character position will be after
552 * printing the text in buffer starting at column "current"
553 */
554 {
555 char *buf; /* used to look thru buffer */
556 int cur; /* current character counter */
557
558 cur = current;
559
560 for (buf = buffer; *buf != '\0'; ++buf) {
561 switch (*buf) {
562
563 case '\n':
564 case 014: /* form feed */
565 cur = 1;
566 break;
567
568 case '\t':
569 cur = ((cur - 1) & tabmask) + tabsize + 1;
570 break;
571
572 case 010: /* backspace */
573 --cur;
574 break;
575
576 default:
577 ++cur;
578 break;
579 } /* end of switch */
580 } /* end of for loop */
581 return (cur);
582 }
583
584
585 int found_err;
586
587 void
588 diag(int level, const char *msg, ...)
589 {
590 va_list ap;
591
592 va_start(ap, msg);
593
594 if (level)
595 found_err = 1;
596 if (output == stdout) {
597 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no);
598 vfprintf(stdout, msg, ap);
599 fprintf(stdout, " */\n");
600 } else {
601 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no);
602 vfprintf(stdout, msg, ap);
603 fprintf(stderr, "\n");
604 }
605 va_end(ap);
606 }
607
608 void
609 writefdef(struct fstate *f, int nm)
610 {
611 fprintf(output, ".ds f%c %s\n.nr s%c %d\n",
612 nm, f->font, nm, f->size);
613 }
614
615 char *
616 chfont(struct fstate *of, struct fstate *nf, char *s)
617 {
618 if (of->font[0] != nf->font[0]
619 || of->font[1] != nf->font[1]) {
620 *s++ = '\\';
621 *s++ = 'f';
622 if (nf->font[1]) {
623 *s++ = '(';
624 *s++ = nf->font[0];
625 *s++ = nf->font[1];
626 } else
627 *s++ = nf->font[0];
628 }
629 if (nf->size != of->size) {
630 *s++ = '\\';
631 *s++ = 's';
632 if (nf->size < of->size) {
633 *s++ = '-';
634 *s++ = '0' + of->size - nf->size;
635 } else {
636 *s++ = '+';
637 *s++ = '0' + nf->size - of->size;
638 }
639 }
640 return s;
641 }
642
643
644 void
645 parsefont(struct fstate *f, const char *s0)
646 {
647 const char *s = s0;
648 int sizedelta = 0;
649 memset(f, 0, sizeof *f);
650 while (*s) {
651 if (isdigit((unsigned char)*s))
652 f->size = f->size * 10 + *s - '0';
653 else
654 if (isupper((unsigned char)*s)) {
655 if (f->font[0])
656 f->font[1] = *s;
657 else
658 f->font[0] = *s;
659 } else
660 if (*s == 'c')
661 f->allcaps = 1;
662 else
663 if (*s == '+')
664 sizedelta++;
665 else
666 if (*s == '-')
667 sizedelta--;
668 else {
669 fprintf(stderr, "indent: bad font specification: %s\n", s0);
670 exit(1);
671 }
672 s++;
673 }
674 if (f->font[0] == 0)
675 f->font[0] = 'R';
676 if (bodyf.size == 0)
677 bodyf.size = 11;
678 if (f->size == 0)
679 f->size = bodyf.size + sizedelta;
680 else
681 if (sizedelta > 0)
682 f->size += bodyf.size;
683 else
684 f->size = bodyf.size - f->size;
685 }
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