1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1985 Sun Microsystems, Inc.
5 * Copyright (c) 1980, 1993
6 * The Regents of the University of California. All rights reserved.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37
38 #if 0
39 #ifndef lint
40 static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 6/6/93";
41 #endif /* not lint */
42 #endif
43
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
46
47 #include <ctype.h>
48 #include <err.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include "indent_globs.h"
53 #include "indent.h"
54
55 int comment_open;
56 static int paren_target;
57 static int pad_output(int current, int target);
58
59 void
dump_line(void)60 dump_line(void)
61 { /* dump_line is the routine that actually
62 * effects the printing of the new source. It
63 * prints the label section, followed by the
64 * code section with the appropriate nesting
65 * level, followed by any comments */
66 int cur_col,
67 target_col = 1;
68 static int not_first_line;
69
70 if (ps.procname[0]) {
71 ps.ind_level = 0;
72 ps.procname[0] = 0;
73 }
74 if (s_code == e_code && s_lab == e_lab && s_com == e_com) {
75 if (suppress_blanklines > 0)
76 suppress_blanklines--;
77 else {
78 ps.bl_line = true;
79 n_real_blanklines++;
80 }
81 }
82 else if (!inhibit_formatting) {
83 suppress_blanklines = 0;
84 ps.bl_line = false;
85 if (prefix_blankline_requested && not_first_line) {
86 if (opt.swallow_optional_blanklines) {
87 if (n_real_blanklines == 1)
88 n_real_blanklines = 0;
89 }
90 else {
91 if (n_real_blanklines == 0)
92 n_real_blanklines = 1;
93 }
94 }
95 while (--n_real_blanklines >= 0)
96 putc('\n', output);
97 n_real_blanklines = 0;
98 if (ps.ind_level == 0)
99 ps.ind_stmt = 0; /* this is a class A kludge. dont do
100 * additional statement indentation if we are
101 * at bracket level 0 */
102
103 if (e_lab != s_lab || e_code != s_code)
104 ++code_lines; /* keep count of lines with code */
105
106
107 if (e_lab != s_lab) { /* print lab, if any */
108 if (comment_open) {
109 comment_open = 0;
110 fprintf(output, ".*/\n");
111 }
112 while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
113 e_lab--;
114 *e_lab = '\0';
115 cur_col = pad_output(1, compute_label_target());
116 if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0
117 || strncmp(s_lab, "#endif", 6) == 0)) {
118 char *s = s_lab;
119 if (e_lab[-1] == '\n') e_lab--;
120 do putc(*s++, output);
121 while (s < e_lab && 'a' <= *s && *s<='z');
122 while ((*s == ' ' || *s == '\t') && s < e_lab)
123 s++;
124 if (s < e_lab)
125 fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */",
126 (int)(e_lab - s), s);
127 }
128 else fprintf(output, "%.*s", (int)(e_lab - s_lab), s_lab);
129 cur_col = count_spaces(cur_col, s_lab);
130 }
131 else
132 cur_col = 1; /* there is no label section */
133
134 ps.pcase = false;
135
136 if (s_code != e_code) { /* print code section, if any */
137 char *p;
138
139 if (comment_open) {
140 comment_open = 0;
141 fprintf(output, ".*/\n");
142 }
143 target_col = compute_code_target();
144 {
145 int i;
146
147 for (i = 0; i < ps.p_l_follow; i++)
148 if (ps.paren_indents[i] >= 0)
149 ps.paren_indents[i] = -(ps.paren_indents[i] + target_col);
150 }
151 cur_col = pad_output(cur_col, target_col);
152 for (p = s_code; p < e_code; p++)
153 if (*p == (char) 0200)
154 fprintf(output, "%d", target_col * 7);
155 else
156 putc(*p, output);
157 cur_col = count_spaces(cur_col, s_code);
158 }
159 if (s_com != e_com) { /* print comment, if any */
160 int target = ps.com_col;
161 char *com_st = s_com;
162
163 target += ps.comment_delta;
164 while (*com_st == '\t') /* consider original indentation in
165 * case this is a box comment */
166 com_st++, target += opt.tabsize;
167 while (target <= 0)
168 if (*com_st == ' ')
169 target++, com_st++;
170 else if (*com_st == '\t') {
171 target = opt.tabsize * (1 + (target - 1) / opt.tabsize) + 1;
172 com_st++;
173 }
174 else
175 target = 1;
176 if (cur_col > target) { /* if comment can't fit on this line,
177 * put it on next line */
178 putc('\n', output);
179 cur_col = 1;
180 ++ps.out_lines;
181 }
182 while (e_com > com_st && isspace((unsigned char)e_com[-1]))
183 e_com--;
184 (void)pad_output(cur_col, target);
185 fwrite(com_st, e_com - com_st, 1, output);
186 ps.comment_delta = ps.n_comment_delta;
187 ++ps.com_lines; /* count lines with comments */
188 }
189 if (ps.use_ff)
190 putc('\014', output);
191 else
192 putc('\n', output);
193 ++ps.out_lines;
194 if (ps.just_saw_decl == 1 && opt.blanklines_after_declarations) {
195 prefix_blankline_requested = 1;
196 ps.just_saw_decl = 0;
197 }
198 else
199 prefix_blankline_requested = postfix_blankline_requested;
200 postfix_blankline_requested = 0;
201 }
202 ps.decl_on_line = ps.in_decl; /* if we are in the middle of a
203 * declaration, remember that fact for
204 * proper comment indentation */
205 ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be
206 * indented if we have not
207 * completed this stmt and if
208 * we are not in the middle of
209 * a declaration */
210 ps.use_ff = false;
211 ps.dumped_decl_indent = 0;
212 *(e_lab = s_lab) = '\0'; /* reset buffers */
213 *(e_code = s_code) = '\0';
214 *(e_com = s_com = combuf + 1) = '\0';
215 ps.ind_level = ps.i_l_follow;
216 ps.paren_level = ps.p_l_follow;
217 if (ps.paren_level > 0)
218 paren_target = -ps.paren_indents[ps.paren_level - 1];
219 not_first_line = 1;
220 }
221
222 int
compute_code_target(void)223 compute_code_target(void)
224 {
225 int target_col = opt.ind_size * ps.ind_level + 1;
226
227 if (ps.paren_level)
228 if (!opt.lineup_to_parens)
229 target_col += opt.continuation_indent *
230 (2 * opt.continuation_indent == opt.ind_size ? 1 : ps.paren_level);
231 else if (opt.lineup_to_parens_always)
232 target_col = paren_target;
233 else {
234 int w;
235 int t = paren_target;
236
237 if ((w = count_spaces(t, s_code) - opt.max_col) > 0
238 && count_spaces(target_col, s_code) <= opt.max_col) {
239 t -= w + 1;
240 if (t > target_col)
241 target_col = t;
242 }
243 else
244 target_col = t;
245 }
246 else if (ps.ind_stmt)
247 target_col += opt.continuation_indent;
248 return target_col;
249 }
250
251 int
compute_label_target(void)252 compute_label_target(void)
253 {
254 return
255 ps.pcase ? (int) (case_ind * opt.ind_size) + 1
256 : *s_lab == '#' ? 1
257 : opt.ind_size * (ps.ind_level - label_offset) + 1;
258 }
259
260
261 /*
262 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
263 *
264 * All rights reserved
265 *
266 *
267 * NAME: fill_buffer
268 *
269 * FUNCTION: Reads one block of input into input_buffer
270 *
271 * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A
272 * Willcox of CAC Added check for switch back to partly full input
273 * buffer from temporary buffer
274 *
275 */
276 void
fill_buffer(void)277 fill_buffer(void)
278 { /* this routine reads stuff from the input */
279 char *p;
280 int i;
281 FILE *f = input;
282
283 if (bp_save != NULL) { /* there is a partly filled input buffer left */
284 buf_ptr = bp_save; /* do not read anything, just switch buffers */
285 buf_end = be_save;
286 bp_save = be_save = NULL;
287 if (buf_ptr < buf_end)
288 return; /* only return if there is really something in
289 * this buffer */
290 }
291 for (p = in_buffer;;) {
292 if (p >= in_buffer_limit) {
293 int size = (in_buffer_limit - in_buffer) * 2 + 10;
294 int offset = p - in_buffer;
295 in_buffer = realloc(in_buffer, size);
296 if (in_buffer == NULL)
297 errx(1, "input line too long");
298 p = in_buffer + offset;
299 in_buffer_limit = in_buffer + size - 2;
300 }
301 if ((i = getc(f)) == EOF) {
302 *p++ = ' ';
303 *p++ = '\n';
304 had_eof = true;
305 break;
306 }
307 if (i != '\0')
308 *p++ = i;
309 if (i == '\n')
310 break;
311 }
312 buf_ptr = in_buffer;
313 buf_end = p;
314 if (p - in_buffer > 2 && p[-2] == '/' && p[-3] == '*') {
315 if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0)
316 fill_buffer(); /* flush indent error message */
317 else {
318 int com = 0;
319
320 p = in_buffer;
321 while (*p == ' ' || *p == '\t')
322 p++;
323 if (*p == '/' && p[1] == '*') {
324 p += 2;
325 while (*p == ' ' || *p == '\t')
326 p++;
327 if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E'
328 && p[4] == 'N' && p[5] == 'T') {
329 p += 6;
330 while (*p == ' ' || *p == '\t')
331 p++;
332 if (*p == '*')
333 com = 1;
334 else if (*p == 'O') {
335 if (*++p == 'N')
336 p++, com = 1;
337 else if (*p == 'F' && *++p == 'F')
338 p++, com = 2;
339 }
340 while (*p == ' ' || *p == '\t')
341 p++;
342 if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) {
343 if (s_com != e_com || s_lab != e_lab || s_code != e_code)
344 dump_line();
345 if (!(inhibit_formatting = com - 1)) {
346 n_real_blanklines = 0;
347 postfix_blankline_requested = 0;
348 prefix_blankline_requested = 0;
349 suppress_blanklines = 1;
350 }
351 }
352 }
353 }
354 }
355 }
356 if (inhibit_formatting) {
357 p = in_buffer;
358 do
359 putc(*p, output);
360 while (*p++ != '\n');
361 }
362 }
363
364 /*
365 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
366 *
367 * All rights reserved
368 *
369 *
370 * NAME: pad_output
371 *
372 * FUNCTION: Writes tabs and spaces to move the current column up to the desired
373 * position.
374 *
375 * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf.
376 *
377 * PARAMETERS: current integer The current column target
378 * nteger The desired column
379 *
380 * RETURNS: Integer value of the new column. (If current >= target, no action is
381 * taken, and current is returned.
382 *
383 * GLOBALS: None
384 *
385 * CALLS: write (sys)
386 *
387 * CALLED BY: dump_line
388 *
389 * HISTORY: initial coding November 1976 D A Willcox of CAC
390 *
391 */
392 static int
pad_output(int current,int target)393 pad_output(int current, int target)
394 /* writes tabs and blanks (if necessary) to
395 * get the current output position up to the
396 * target column */
397 /* current: the current column value */
398 /* target: position we want it at */
399 {
400 int curr; /* internal column pointer */
401
402 if (current >= target)
403 return (current); /* line is already long enough */
404 curr = current;
405 if (opt.use_tabs) {
406 int tcur;
407
408 while ((tcur = opt.tabsize * (1 + (curr - 1) / opt.tabsize) + 1) <= target) {
409 putc('\t', output);
410 curr = tcur;
411 }
412 }
413 while (curr++ < target)
414 putc(' ', output); /* pad with final blanks */
415
416 return (target);
417 }
418
419 /*
420 * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
421 *
422 * All rights reserved
423 *
424 *
425 * NAME: count_spaces
426 *
427 * FUNCTION: Find out where printing of a given string will leave the current
428 * character position on output.
429 *
430 * ALGORITHM: Run thru input string and add appropriate values to current
431 * position.
432 *
433 * RETURNS: Integer value of position after printing "buffer" starting in column
434 * "current".
435 *
436 * HISTORY: initial coding November 1976 D A Willcox of CAC
437 *
438 */
439 int
count_spaces_until(int cur,char * buffer,char * end)440 count_spaces_until(int cur, char *buffer, char *end)
441 /*
442 * this routine figures out where the character position will be after
443 * printing the text in buffer starting at column "current"
444 */
445 {
446 char *buf; /* used to look thru buffer */
447
448 for (buf = buffer; *buf != '\0' && buf != end; ++buf) {
449 switch (*buf) {
450
451 case '\n':
452 case 014: /* form feed */
453 cur = 1;
454 break;
455
456 case '\t':
457 cur = opt.tabsize * (1 + (cur - 1) / opt.tabsize) + 1;
458 break;
459
460 case 010: /* backspace */
461 --cur;
462 break;
463
464 default:
465 ++cur;
466 break;
467 } /* end of switch */
468 } /* end of for loop */
469 return (cur);
470 }
471
472 int
count_spaces(int cur,char * buffer)473 count_spaces(int cur, char *buffer)
474 {
475 return (count_spaces_until(cur, buffer, NULL));
476 }
477
478 void
diag4(int level,const char * msg,int a,int b)479 diag4(int level, const char *msg, int a, int b)
480 {
481 if (level)
482 found_err = 1;
483 if (output == stdout) {
484 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no);
485 fprintf(stdout, msg, a, b);
486 fprintf(stdout, " */\n");
487 }
488 else {
489 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no);
490 fprintf(stderr, msg, a, b);
491 fprintf(stderr, "\n");
492 }
493 }
494
495 void
diag3(int level,const char * msg,int a)496 diag3(int level, const char *msg, int a)
497 {
498 if (level)
499 found_err = 1;
500 if (output == stdout) {
501 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no);
502 fprintf(stdout, msg, a);
503 fprintf(stdout, " */\n");
504 }
505 else {
506 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no);
507 fprintf(stderr, msg, a);
508 fprintf(stderr, "\n");
509 }
510 }
511
512 void
diag2(int level,const char * msg)513 diag2(int level, const char *msg)
514 {
515 if (level)
516 found_err = 1;
517 if (output == stdout) {
518 fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no);
519 fprintf(stdout, "%s", msg);
520 fprintf(stdout, " */\n");
521 }
522 else {
523 fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no);
524 fprintf(stderr, "%s", msg);
525 fprintf(stderr, "\n");
526 }
527 }
528
529