1 /** $MirOS: src/usr.bin/indent/io.c,v 1.6 2007/05/06 18:26:18 tg Exp $ */
2 /* $OpenBSD: io.c,v 1.10 2005/05/15 03:27:04 millert Exp $ */
3
4 /*
5 * Copyright (c) 1985 Sun Microsystems, Inc.
6 * Copyright (c) 1980, 1993 The Regents of the University of California.
7 * Copyright (c) 1976 Board of Trustees of the University of Illinois.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include <stdio.h>
36 #include <ctype.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <stdarg.h>
40 #include <err.h>
41 #include "indent_globs.h"
42
43 __SCCSID("@(#)io.c 8.1 (Berkeley) 6/6/93");
44 __RCSID("$MirOS: src/usr.bin/indent/io.c,v 1.6 2007/05/06 18:26:18 tg Exp $");
45
46
47 int comment_open;
48 static int paren_target;
49
50 void
dump_line(void)51 dump_line(void)
52 { /* dump_line is the routine that actually
53 * effects the printing of the new source. It
54 * prints the label section, followed by the
55 * code section with the appropriate nesting
56 * level, followed by any comments */
57 int cur_col, target_col = 0;
58 static int not_first_line;
59
60 if (ps.procname[0]) {
61 if (troff) {
62 if (comment_open) {
63 comment_open = 0;
64 fprintf(output, ".*/\n");
65 }
66 fprintf(output, ".Pr \"%s\"\n", ps.procname);
67 }
68 ps.ind_level = 0;
69 ps.procname[0] = 0;
70 }
71 if (s_code == e_code && s_lab == e_lab && s_com == e_com) {
72 if (suppress_blanklines > 0)
73 suppress_blanklines--;
74 else {
75 ps.bl_line = true;
76 n_real_blanklines++;
77 }
78 }
79 else if (!inhibit_formatting) {
80 suppress_blanklines = 0;
81 ps.bl_line = false;
82 if (prefix_blankline_requested && not_first_line) {
83 if (swallow_optional_blanklines) {
84 if (n_real_blanklines == 1)
85 n_real_blanklines = 0;
86 } else {
87 if (n_real_blanklines == 0)
88 n_real_blanklines = 1;
89 }
90 }
91 while (--n_real_blanklines >= 0)
92 putc('\n', output);
93 n_real_blanklines = 0;
94 if (ps.ind_level == 0)
95 ps.ind_stmt = 0; /* this is a class A kludge. dont do
96 * additional statement indentation if we are
97 * at bracket level 0 */
98
99 if (e_lab != s_lab || e_code != s_code)
100 ++code_lines; /* keep count of lines with code */
101
102
103 if (e_lab != s_lab) { /* print lab, if any */
104 if (comment_open) {
105 comment_open = 0;
106 fprintf(output, ".*/\n");
107 }
108 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
109 e_lab--;
110 cur_col = pad_output(1, compute_label_target());
111 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0
112 || strncmp(s_lab, "#endif", 6) == 0)) {
113 char *s = s_lab;
114 if (e_lab[-1] == '\n')
115 e_lab--;
116 do
117 putc(*s++, output);
118 while (s < e_lab && 'a' <= *s && *s<='z');
119 while ((*s == ' ' || *s == '\t') && s < e_lab)
120 s++;
121 if (s < e_lab)
122 fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */",
123 (int)(e_lab - s), s);
124 }
125 else fprintf(output, "%.*s", (int)(e_lab - s_lab), s_lab);
126 cur_col = count_spaces(cur_col, s_lab);
127 }
128 else
129 cur_col = 1; /* there is no label section */
130
131 ps.pcase = false;
132
133 if (s_code != e_code) { /* print code section, if any */
134 char *p;
135
136 if (comment_open) {
137 comment_open = 0;
138 fprintf(output, ".*/\n");
139 }
140 target_col = compute_code_target();
141 {
142 int i;
143
144 for (i = 0; i < ps.p_l_follow; i++)
145 if (ps.paren_indents[i] >= 0)
146 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col);
147 }
148 cur_col = pad_output(cur_col, target_col);
149 for (p = s_code; p < e_code; p++)
150 #if 0
151 if (*p == (char) 0200)
152 fprintf(output, "%d", target_col * 7);
153 else
154 #endif
155 putc(*p, output);
156 cur_col = count_spaces(cur_col, s_code);
157 }
158 if (s_com != e_com) {
159 if (troff) {
160 int all_here = 0;
161 char *p;
162
163 if (e_com[-1] == '/' && e_com[-2] == '*')
164 e_com -= 2, all_here++;
165 while (e_com > s_com && e_com[-1] == ' ')
166 e_com--;
167 *e_com = 0;
168 p = s_com;
169 while (*p == ' ')
170 p++;
171 if (p[0] == '/' && p[1] == '*')
172 p += 2, all_here++;
173 else if (p[0] == '*')
174 p += p[1] == '/' ? 2 : 1;
175 while (*p == ' ')
176 p++;
177 if (*p == 0)
178 goto inhibit_newline;
179 if (comment_open < 2 && ps.box_com) {
180 comment_open = 0;
181 fprintf(output, ".*/\n");
182 }
183 if (comment_open == 0) {
184 if ('a' <= *p && *p <= 'z')
185 *p = *p + 'A' - 'a';
186 if (e_com - p < 50 && all_here == 2) {
187 char *follow = p;
188 fprintf(output, "\n.nr C! \\w\1");
189 while (follow < e_com) {
190 switch (*follow) {
191 case '\n':
192 putc(' ', output);
193 case 1:
194 break;
195 case '\\':
196 putc('\\', output);
197 default:
198 putc(*follow, output);
199 }
200 follow++;
201 }
202 putc(1, output);
203 }
204 fprintf(output, "\n./* %dp %d %dp\n",
205 ps.com_col * 7,
206 (s_code != e_code || s_lab != e_lab) - ps.box_com,
207 target_col * 7);
208 }
209 comment_open = 1 + ps.box_com;
210 while (*p) {
211 if (*p == BACKSLASH)
212 putc(BACKSLASH, output);
213 putc(*p++, output);
214 }
215 } else { /* print comment, if any */
216 int target = ps.com_col;
217 char *com_st = s_com;
218
219 target += ps.comment_delta;
220 while (*com_st == '\t')
221 com_st++, target += 8; /* ? */
222 while (target <= 0)
223 if (*com_st == ' ')
224 target++, com_st++;
225 else if (*com_st == '\t')
226 target = ((target - 1) & ~7) + 9, com_st++;
227 else
228 target = 1;
229 if (cur_col > target) { /* if comment cant fit on this line,
230 * put it on next line */
231 putc('\n', output);
232 cur_col = 1;
233 ++ps.out_lines;
234 }
235 while (e_com > com_st && isspace(e_com[-1]))
236 e_com--;
237 cur_col = pad_output(cur_col, target);
238 if (!ps.box_com) {
239 if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1)) {
240 if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1)
241 com_st[1] = '*';
242 else
243 fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output);
244 }
245 }
246 fwrite(com_st, e_com - com_st, 1, output);
247 ps.comment_delta = ps.n_comment_delta;
248 cur_col = count_spaces(cur_col, com_st);
249 ++ps.com_lines; /* count lines with comments */
250 }
251 }
252 if (ps.use_ff)
253 putc('\014', output);
254 else
255 putc('\n', output);
256 inhibit_newline:
257 ++ps.out_lines;
258 if (ps.just_saw_decl == 1 && blanklines_after_declarations) {
259 prefix_blankline_requested = 1;
260 ps.just_saw_decl = 0;
261 }
262 else
263 prefix_blankline_requested = postfix_blankline_requested;
264 postfix_blankline_requested = 0;
265 }
266 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a
267 * declaration, remember that fact for
268 * proper comment indentation */
269 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be
270 * indented if we have not
271 * completed this stmt and if
272 * we are not in the middle of
273 * a declaration */
274 ps.use_ff = false;
275 ps.dumped_decl_indent = 0;
276 *(e_lab = s_lab) = '\0'; /* reset buffers */
277 *(e_code = s_code) = '\0';
278 *(e_com = s_com) = '\0';
279 ps.ind_level = ps.i_l_follow;
280 ps.paren_level = ps.p_l_follow;
281 paren_target = -ps.paren_indents[ps.paren_level - 1];
282 not_first_line = 1;
283 return;
284 }
285
286 int
compute_code_target(void)287 compute_code_target(void)
288 {
289 int target_col;
290
291 target_col = ps.ind_size * ps.ind_level + 1;
292 if (ps.paren_level)
293 if (!lineup_to_parens)
294 target_col += continuation_indent *
295 (lineup_indent ? ps.paren_level : 1);
296 else {
297 int w;
298 int t = paren_target;
299
300 if ((w = count_spaces(t, s_code) - max_col) > 0
301 && count_spaces(target_col, s_code) <= max_col) {
302 t -= w + 1;
303 if (t > target_col)
304 target_col = t;
305 }
306 else
307 target_col = t;
308 }
309 else if (ps.ind_stmt)
310 target_col += continuation_indent;
311 return target_col;
312 }
313
314 int
compute_label_target(void)315 compute_label_target(void)
316 {
317 return
318 ps.pcase ? (int) (case_ind * ps.ind_size) + 1
319 : *s_lab == '#' ? 1
320 : ps.ind_size * (ps.ind_level - label_offset) + 1;
321 }
322
323
324 /*
325 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
326 *
327 * All rights reserved
328 *
329 *
330 * NAME: fill_buffer
331 *
332 * FUNCTION: Reads one block of input into input_buffer
333 *
334 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A
335 * Willcox of CAC Added check for switch back to partly full input
336 * buffer from temporary buffer
337 *
338 */
339 void
fill_buffer(void)340 fill_buffer(void)
341 { /* this routine reads stuff from the input */
342 char *p, *buf2;
343 int i;
344 FILE *f = input;
345
346 if (bp_save != 0) { /* there is a partly filled input buffer left */
347 buf_ptr = bp_save; /* dont read anything, just switch buffers */
348 buf_end = be_save;
349 bp_save = be_save = 0;
350 if (buf_ptr < buf_end)
351 return; /* only return if there is really something in
352 * this buffer */
353 }
354 for (p = in_buffer;;) {
355 if (p >= in_buffer_limit) {
356 int size = (in_buffer_limit - in_buffer) * 2 + 10;
357 int offset = p - in_buffer;
358 buf2 = realloc(in_buffer, size);
359 if (buf2 == NULL)
360 errx(1, "input line too long");
361 in_buffer = buf2;
362 p = in_buffer + offset;
363 in_buffer_limit = in_buffer + size - 2;
364 }
365 if ((i = getc(f)) == EOF) {
366 *p++ = ' ';
367 *p++ = '\n';
368 had_eof = true;
369 break;
370 }
371 *p++ = i;
372 if (i == '\n')
373 break;
374 }
375 buf_ptr = in_buffer;
376 buf_end = p;
377 if (p - 3 >= in_buffer && p[-2] == '/' && p[-3] == '*') {
378 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0)
379 fill_buffer(); /* flush indent error message */
380 else {
381 int com = 0;
382
383 p = in_buffer;
384 while (*p == ' ' || *p == '\t')
385 p++;
386 if (*p == '/' && p[1] == '*') {
387 p += 2;
388 while (*p == ' ' || *p == '\t')
389 p++;
390 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E'
391 && p[4] == 'N' && p[5] == 'T') {
392 p += 6;
393 while (*p == ' ' || *p == '\t')
394 p++;
395 if (*p == '*')
396 com = 1;
397 else if (*p == 'O') {
398 if (*++p == 'N')
399 p++, com = 1;
400 else if (*p == 'F' && *++p == 'F')
401 p++, com = 2;
402 }
403 while (*p == ' ' || *p == '\t')
404 p++;
405 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) {
406 if (s_com != e_com || s_lab != e_lab || s_code != e_code)
407 dump_line();
408 if (!(inhibit_formatting = com - 1)) {
409 n_real_blanklines = 0;
410 postfix_blankline_requested = 0;
411 prefix_blankline_requested = 0;
412 suppress_blanklines = 1;
413 }
414 }
415 }
416 }
417 }
418 }
419 if (inhibit_formatting) {
420 p = in_buffer;
421 do
422 putc(*p, output);
423 while (*p++ != '\n');
424 }
425 return;
426 }
427
428 /*
429 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
430 *
431 * All rights reserved
432 *
433 *
434 * NAME: pad_output
435 *
436 * FUNCTION: Writes tabs and spaces to move the current column up to the desired
437 * position.
438 *
439 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf.
440 *
441 * PARAMETERS: current integer The current column target
442 * target integer The desired column
443 *
444 * RETURNS: Integer value of the new column. (If current >= target, no action is
445 * taken, and current is returned.
446 *
447 * GLOBALS: None
448 *
449 * CALLS: write (sys)
450 *
451 * CALLED BY: dump_line
452 *
453 * HISTORY: initial coding November 1976 D A Willcox of CAC
454 *
455 */
456 int
pad_output(int current,int target)457 pad_output(int current, int target)
458 {
459 int curr; /* internal column pointer */
460 int tcur;
461
462 if (troff)
463 fprintf(output, "\\h'|%dp'", (target - 1) * 7);
464 else {
465 if (current >= target)
466 return (current); /* line is already long enough */
467 curr = current;
468 while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) {
469 putc('\t', output);
470 curr = tcur;
471 }
472 while (curr++ < target)
473 putc(' ', output); /* pad with final blanks */
474 }
475 return (target);
476 }
477
478 /*
479 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
480 *
481 * All rights reserved
482 *
483 *
484 * NAME: count_spaces
485 *
486 * FUNCTION: Find out where printing of a given string will leave the current
487 * character position on output.
488 *
489 * ALGORITHM: Run thru input string and add appropriate values to current
490 * position.
491 *
492 * RETURNS: Integer value of position after printing "buffer" starting in column
493 * "current".
494 *
495 * HISTORY: initial coding November 1976 D A Willcox of CAC
496 *
497 */
498 int
count_spaces(int current,char * buffer)499 count_spaces(int current, char *buffer)
500 {
501 char *buf; /* used to look thru buffer */
502 int cur; /* current character counter */
503
504 cur = current;
505
506 for (buf = buffer; *buf != '\0'; ++buf) {
507 switch (*buf) {
508
509 case '\n':
510 case 014: /* form feed */
511 cur = 1;
512 break;
513
514 case '\t':
515 cur = ((cur - 1) & tabmask) + tabsize + 1;
516 break;
517
518 case 010: /* backspace */
519 --cur;
520 break;
521
522 default:
523 ++cur;
524 break;
525 } /* end of switch */
526 } /* end of for loop */
527 return (cur);
528 }
529
530 int found_err;
531
532 /* VARARGS2 */
533 void
diag(int level,char * msg,...)534 diag(int level, char *msg, ...)
535 {
536 va_list ap;
537
538 va_start(ap, msg);
539 if (level)
540 found_err = 1;
541 if (output == stdout) {
542 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no);
543 vfprintf(stdout, msg, ap);
544 fprintf(stdout, " */\n");
545 }
546 else {
547 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no);
548 vfprintf(stderr, msg, ap);
549 fprintf(stderr, "\n");
550 }
551 va_end(ap);
552 }
553
554 void
writefdef(struct fstate * f,int nm)555 writefdef(struct fstate *f, int nm)
556 {
557 fprintf(output, ".ds f%c %s\n.nr s%c %d\n",
558 nm, f->font, nm, f->size);
559 }
560
561 char *
chfont(struct fstate * of,struct fstate * nf,char * s)562 chfont(struct fstate *of, struct fstate *nf, char *s)
563 {
564 if (of->font[0] != nf->font[0]
565 || of->font[1] != nf->font[1]) {
566 *s++ = '\\';
567 *s++ = 'f';
568 if (nf->font[1]) {
569 *s++ = '(';
570 *s++ = nf->font[0];
571 *s++ = nf->font[1];
572 }
573 else
574 *s++ = nf->font[0];
575 }
576 if (nf->size != of->size) {
577 *s++ = '\\';
578 *s++ = 's';
579 if (nf->size < of->size) {
580 *s++ = '-';
581 *s++ = '0' + of->size - nf->size;
582 }
583 else {
584 *s++ = '+';
585 *s++ = '0' + nf->size - of->size;
586 }
587 }
588 return s;
589 }
590
591 void
parsefont(struct fstate * f,char * s0)592 parsefont(struct fstate *f, char *s0)
593 {
594 char *s = s0;
595 int sizedelta = 0;
596 bzero(f, sizeof *f);
597 while (*s) {
598 if (isdigit(*s))
599 f->size = f->size * 10 + *s - '0';
600 else if (isupper(*s))
601 if (f->font[0])
602 f->font[1] = *s;
603 else
604 f->font[0] = *s;
605 else if (*s == 'c')
606 f->allcaps = 1;
607 else if (*s == '+')
608 sizedelta++;
609 else if (*s == '-')
610 sizedelta--;
611 else
612 errx(1, "bad font specification: %s", s0);
613 s++;
614 }
615 if (f->font[0] == 0)
616 f->font[0] = 'R';
617 if (bodyf.size == 0)
618 bodyf.size = 11;
619 if (f->size == 0)
620 f->size = bodyf.size + sizedelta;
621 else if (sizedelta > 0)
622 f->size += bodyf.size;
623 else
624 f->size = bodyf.size - f->size;
625 }
626