File: | src/usr.bin/indent/indent.c |
Warning: | line 1273, column 3 Value stored to 'flushed_nl' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
1 | /* $OpenBSD: indent.c,v 1.32 2021/01/26 18:21:25 deraadt Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1980, 1993 |
5 | * The Regents of the University of California. |
6 | * Copyright (c) 1976 Board of Trustees of the University of Illinois. |
7 | * Copyright (c) 1985 Sun Microsystems, Inc. |
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 <fcntl.h> |
36 | #include <unistd.h> |
37 | #include <limits.h> |
38 | #include <stdio.h> |
39 | #include <stdlib.h> |
40 | #include <string.h> |
41 | #include "indent_globs.h" |
42 | #include "indent_codes.h" |
43 | #include <ctype.h> |
44 | #include <errno(*__errno()).h> |
45 | #include <err.h> |
46 | |
47 | char *in_name = "Standard Input"; /* will always point to name of input |
48 | * file */ |
49 | char *out_name = "Standard Output"; /* will always point to name |
50 | * of output file */ |
51 | char bakfile[PATH_MAX1024] = ""; |
52 | |
53 | FILE *input; /* the fid for the input file */ |
54 | FILE *output; /* the output file */ |
55 | |
56 | char *labbuf; /* buffer for label */ |
57 | char *s_lab; /* start ... */ |
58 | char *e_lab; /* .. and end of stored label */ |
59 | char *l_lab; /* limit of label buffer */ |
60 | |
61 | char *codebuf; /* buffer for code section */ |
62 | char *s_code; /* start ... */ |
63 | char *e_code; /* .. and end of stored code */ |
64 | char *l_code; /* limit of code section */ |
65 | |
66 | char *combuf; /* buffer for comments */ |
67 | char *s_com; /* start ... */ |
68 | char *e_com; /* ... and end of stored comments */ |
69 | char *l_com; /* limit of comment buffer */ |
70 | |
71 | char *tokenbuf; /* the last token scanned */ |
72 | char *s_token; |
73 | char *e_token; |
74 | char *l_token; |
75 | |
76 | char *in_buffer; /* input buffer */ |
77 | char *in_buffer_limit; /* the end of the input buffer */ |
78 | char *buf_ptr; /* ptr to next character to be taken from |
79 | * in_buffer */ |
80 | char *buf_end; /* ptr to first after last char in in_buffer */ |
81 | |
82 | char save_com[sc_size5000]; /* input text is saved here when looking for |
83 | * the brace after an if, while, etc */ |
84 | char *sc_end; /* pointer into save_com buffer */ |
85 | |
86 | char *bp_save; /* saved value of buf_ptr when taking input |
87 | * from save_com */ |
88 | char *be_save; /* similarly saved value of buf_end */ |
89 | |
90 | int pointer_as_binop; |
91 | int blanklines_after_declarations; |
92 | int blanklines_before_blockcomments; |
93 | int blanklines_after_procs; |
94 | int blanklines_around_conditional_compilation; |
95 | int swallow_optional_blanklines; |
96 | int n_real_blanklines; |
97 | int prefix_blankline_requested; |
98 | int postfix_blankline_requested; |
99 | int break_comma; /* when true and not in parens, break after a |
100 | * comma */ |
101 | int btype_2; /* when true, brace should be on same line as |
102 | * if, while, etc */ |
103 | float case_ind; /* indentation level to be used for a "case |
104 | * n:" */ |
105 | int code_lines; /* count of lines with code */ |
106 | int had_eof; /* set to true when input is exhausted */ |
107 | int line_no; /* the current line number. */ |
108 | int max_col; /* the maximum allowable line length */ |
109 | int verbose; /* when true, non-essential error messages are |
110 | * printed */ |
111 | int cuddle_else; /* true if else should cuddle up to '}' */ |
112 | int star_comment_cont; /* true iff comment continuation lines should |
113 | * have stars at the beginning of each line. */ |
114 | int comment_delimiter_on_blankline; |
115 | int troff; /* true iff were generating troff input */ |
116 | int procnames_start_line; /* if true, the names of procedures |
117 | * being defined get placed in column |
118 | * 1 (ie. a newline is placed between |
119 | * the type of the procedure and its |
120 | * name) */ |
121 | int proc_calls_space; /* If true, procedure calls look like: |
122 | * foo(bar) rather than foo (bar) */ |
123 | int format_col1_comments; /* If comments which start in column 1 |
124 | * are to be magically reformatted |
125 | * (just like comments that begin in |
126 | * later columns) */ |
127 | int inhibit_formatting; /* true if INDENT OFF is in effect */ |
128 | int suppress_blanklines;/* set iff following blanklines should be |
129 | * suppressed */ |
130 | int continuation_indent;/* set to the indentation between the edge of |
131 | * code and continuation lines */ |
132 | int lineup_to_parens; /* if true, continued code within parens will |
133 | * be lined up to the open paren */ |
134 | int Bill_Shannon; /* true iff a blank should always be inserted |
135 | * after sizeof */ |
136 | int blanklines_after_declarations_at_proctop; /* This is vaguely |
137 | * similar to |
138 | * blanklines_after_decla |
139 | * rations except that |
140 | * it only applies to |
141 | * the first set of |
142 | * declarations in a |
143 | * procedure (just after |
144 | * the first '{') and it |
145 | * causes a blank line |
146 | * to be generated even |
147 | * if there are no |
148 | * declarations */ |
149 | int block_comment_max_col; |
150 | int extra_expression_indent; /* True if continuation lines from the |
151 | * expression part of "if(e)", |
152 | * "while(e)", "for(e;e;e)" should be |
153 | * indented an extra tab stop so that |
154 | * they don't conflict with the code |
155 | * that follows */ |
156 | int use_tabs; /* set true to use tabs for spacing, |
157 | * false uses all spaces */ |
158 | |
159 | /* -troff font state information */ |
160 | |
161 | struct fstate |
162 | keywordf, /* keyword font */ |
163 | stringf, /* string font */ |
164 | boxcomf, /* Box comment font */ |
165 | blkcomf, /* Block comment font */ |
166 | scomf, /* Same line comment font */ |
167 | bodyf; /* major body font */ |
168 | |
169 | struct parser_state ps; |
170 | |
171 | int ifdef_level; |
172 | int rparen_count; |
173 | struct parser_state state_stack[5]; |
174 | struct parser_state match_state[5]; |
175 | |
176 | |
177 | void bakcopy(void); |
178 | |
179 | int |
180 | main(int argc, char **argv) |
181 | { |
182 | |
183 | extern int found_err; /* flag set in diag() on error */ |
184 | int dec_ind; /* current indentation for declarations */ |
185 | int di_stack[20]; /* a stack of structure indentation levels */ |
186 | int flushed_nl; /* used when buffering up comments to remember |
187 | * that a newline was passed over */ |
188 | int force_nl; /* when true, code must be broken */ |
189 | int hd_type; /* used to store type of stmt for if (...), |
190 | * for (...), etc */ |
191 | int i; /* local loop counter */ |
192 | int scase; /* set to true when we see a case, so we will |
193 | * know what to do with the following colon */ |
194 | int sp_sw; /* when true, we are in the expressin of |
195 | * if(...), while(...), etc. */ |
196 | int squest; /* when this is positive, we have seen a ? |
197 | * without the matching : in a <c>?<s>:<s> |
198 | * construct */ |
199 | char *t_ptr; /* used for copying tokens */ |
200 | int tabs_to_var; /* true if using tabs to indent to var name */ |
201 | int type_code; /* the type of token, returned by lexi */ |
202 | |
203 | int last_else = 0; /* true iff last keyword was an else */ |
204 | |
205 | if (pledge("stdio rpath wpath cpath", NULL((void *)0)) == -1) |
206 | err(1, "pledge"); |
207 | |
208 | /*-----------------------------------------------*\ |
209 | | INITIALIZATION | |
210 | \*-----------------------------------------------*/ |
211 | |
212 | |
213 | hd_type = 0; |
214 | ps.p_stack[0] = stmt25; /* this is the parser's stack */ |
215 | ps.last_nl = true1; /* this is true if the last thing scanned was |
216 | * a newline */ |
217 | ps.last_token = semicolon10; |
218 | combuf = malloc(bufsize200); |
219 | labbuf = malloc(bufsize200); |
220 | codebuf = malloc(bufsize200); |
221 | tokenbuf = malloc(bufsize200); |
222 | if (combuf == NULL((void *)0) || labbuf == NULL((void *)0) || codebuf == NULL((void *)0) || |
223 | tokenbuf == NULL((void *)0)) |
224 | err(1, NULL((void *)0)); |
225 | l_com = combuf + bufsize200 - 5; |
226 | l_lab = labbuf + bufsize200 - 5; |
227 | l_code = codebuf + bufsize200 - 5; |
228 | l_token = tokenbuf + bufsize200 - 5; |
229 | combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and |
230 | * comment buffers */ |
231 | combuf[1] = codebuf[1] = labbuf[1] = '\0'; |
232 | ps.else_if = 1; /* Default else-if special processing to on */ |
233 | s_lab = e_lab = labbuf + 1; |
234 | s_code = e_code = codebuf + 1; |
235 | s_com = e_com = combuf + 1; |
236 | s_token = e_token = tokenbuf + 1; |
237 | |
238 | in_buffer = malloc(10); |
239 | if (in_buffer == NULL((void *)0)) |
240 | err(1, NULL((void *)0)); |
241 | in_buffer_limit = in_buffer + 8; |
242 | buf_ptr = buf_end = in_buffer; |
243 | line_no = 1; |
244 | had_eof = ps.in_decl = ps.decl_on_line = break_comma = false0; |
245 | sp_sw = force_nl = false0; |
246 | ps.in_or_st = false0; |
247 | ps.bl_line = true1; |
248 | dec_ind = 0; |
249 | di_stack[ps.dec_nest = 0] = 0; |
250 | ps.want_blank = ps.in_stmt = ps.ind_stmt = false0; |
251 | |
252 | |
253 | scase = ps.pcase = false0; |
254 | squest = 0; |
255 | sc_end = 0; |
256 | bp_save = 0; |
257 | be_save = 0; |
258 | |
259 | output = 0; |
260 | |
261 | |
262 | |
263 | /*--------------------------------------------------*\ |
264 | | COMMAND LINE SCAN | |
265 | \*--------------------------------------------------*/ |
266 | |
267 | #ifdef undef |
268 | max_col = 78; /* -l78 */ |
269 | lineup_to_parens = 1; /* -lp */ |
270 | ps.ljust_decl = 0; /* -ndj */ |
271 | ps.com_ind = 33; /* -c33 */ |
272 | star_comment_cont = 1; /* -sc */ |
273 | ps.ind_size = 8; /* -i8 */ |
274 | verbose = 0; |
275 | ps.decl_indent = 16; /* -di16 */ |
276 | ps.indent_parameters = 1; /* -ip */ |
277 | ps.decl_com_ind = 0; /* if this is not set to some positive value |
278 | * by an arg, we will set this equal to |
279 | * ps.com_ind */ |
280 | btype_2 = 1; /* -br */ |
281 | cuddle_else = 1; /* -ce */ |
282 | ps.unindent_displace = 0; /* -d0 */ |
283 | ps.case_indent = 0; /* -cli0 */ |
284 | format_col1_comments = 1; /* -fc1 */ |
285 | procnames_start_line = 1; /* -psl */ |
286 | proc_calls_space = 0; /* -npcs */ |
287 | comment_delimiter_on_blankline = 1; /* -cdb */ |
288 | ps.leave_comma = 1; /* -nbc */ |
289 | #endif |
290 | |
291 | for (i = 1; i < argc; ++i) |
292 | if (strcmp(argv[i], "-npro") == 0) |
293 | break; |
294 | set_defaults(); |
295 | if (i >= argc) |
296 | set_profile(); |
297 | |
298 | for (i = 1; i < argc; ++i) { |
299 | |
300 | /* |
301 | * look thru args (if any) for changes to defaults |
302 | */ |
303 | if (argv[i][0] != '-') {/* no flag on parameter */ |
304 | if (input == 0) { /* we must have the input file */ |
305 | in_name = argv[i]; /* remember name of input file */ |
306 | input = fopen(in_name, "r"); |
307 | if (input == NULL((void *)0)) /* check for open error */ |
308 | err(1, "%s", in_name); |
309 | continue; |
310 | } |
311 | else if (output == 0) { /* we have the output file */ |
312 | out_name = argv[i]; /* remember name of output file */ |
313 | if (strcmp(in_name, out_name) == 0) /* attempt to overwrite |
314 | * the file */ |
315 | errx(1, "input and output files must be different"); |
316 | output = fopen(out_name, "w"); |
317 | if (output == NULL((void *)0)) /* check for create error */ |
318 | err(1, "%s", out_name); |
319 | continue; |
320 | } |
321 | errx(1, "unknown parameter: %s", argv[i]); |
322 | } |
323 | else |
324 | set_option(argv[i]); |
325 | } /* end of for */ |
326 | if (input == NULL((void *)0)) { |
327 | input = stdin(&__sF[0]); |
328 | } |
329 | if (output == NULL((void *)0)) { |
330 | if (troff || input == stdin(&__sF[0])) |
331 | output = stdout(&__sF[1]); |
332 | else { |
333 | out_name = in_name; |
334 | bakcopy(); |
335 | } |
336 | } |
337 | if (ps.com_ind <= 1) |
338 | ps.com_ind = 2; /* dont put normal comments before column 2 */ |
339 | if (troff) { |
340 | if (bodyf.font[0] == 0) |
341 | parsefont(&bodyf, "R"); |
342 | if (scomf.font[0] == 0) |
343 | parsefont(&scomf, "I"); |
344 | if (blkcomf.font[0] == 0) |
345 | blkcomf = scomf, blkcomf.size += 2; |
346 | if (boxcomf.font[0] == 0) |
347 | boxcomf = blkcomf; |
348 | if (stringf.font[0] == 0) |
349 | parsefont(&stringf, "L"); |
350 | if (keywordf.font[0] == 0) |
351 | parsefont(&keywordf, "B"); |
352 | writefdef(&bodyf, 'B'); |
353 | writefdef(&scomf, 'C'); |
354 | writefdef(&blkcomf, 'L'); |
355 | writefdef(&boxcomf, 'X'); |
356 | writefdef(&stringf, 'S'); |
357 | writefdef(&keywordf, 'K'); |
358 | } |
359 | if (block_comment_max_col <= 0) |
360 | block_comment_max_col = max_col; |
361 | if (ps.decl_com_ind <= 0) /* if not specified by user, set this */ |
362 | ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind; |
363 | if (continuation_indent == 0) |
364 | continuation_indent = ps.ind_size; |
365 | fill_buffer(); /* get first batch of stuff into input buffer */ |
366 | |
367 | parse(semicolon10); |
368 | { |
369 | char *p = buf_ptr; |
370 | int col = 1; |
371 | |
372 | while (1) { |
373 | if (*p == ' ') |
374 | col++; |
375 | else if (*p == '\t') |
376 | col = ((col - 1) & ~7) + 9; |
377 | else |
378 | break; |
379 | p++; |
380 | } |
381 | if (col > ps.ind_size) |
382 | ps.ind_level = ps.i_l_follow = col / ps.ind_size; |
383 | } |
384 | if (troff) { |
385 | char *p = in_name, |
386 | *beg = in_name; |
387 | |
388 | while (*p) |
389 | if (*p++ == '/') |
390 | beg = p; |
391 | fprintf(output, ".Fn \"%s\"\n", beg); |
392 | } |
393 | /* |
394 | * START OF MAIN LOOP |
395 | */ |
396 | |
397 | while (1) { /* this is the main loop. it will go until we |
398 | * reach eof */ |
399 | int is_procname; |
400 | |
401 | type_code = lexi(); /* lexi reads one token. The actual |
402 | * characters read are stored in "token". lexi |
403 | * returns a code indicating the type of token */ |
404 | is_procname = ps.procname[0]; |
405 | |
406 | /* |
407 | * The following code moves everything following an if (), while (), |
408 | * else, etc. up to the start of the following stmt to a buffer. This |
409 | * allows proper handling of both kinds of brace placement. |
410 | */ |
411 | |
412 | flushed_nl = false0; |
413 | while (ps.search_brace) { /* if we scanned an if(), while(), |
414 | * etc., we might need to copy stuff |
415 | * into a buffer we must loop, copying |
416 | * stuff into save_com, until we find |
417 | * the start of the stmt which follows |
418 | * the if, or whatever */ |
419 | switch (type_code) { |
420 | case newline1: |
421 | ++line_no; |
422 | flushed_nl = true1; |
423 | case form_feed18: |
424 | break; /* form feeds and newlines found here will be |
425 | * ignored */ |
426 | |
427 | case lbrace11: /* this is a brace that starts the compound |
428 | * stmt */ |
429 | if (sc_end == 0) { /* ignore buffering if a comment wasnt |
430 | * stored up */ |
431 | ps.search_brace = false0; |
432 | goto check_type; |
433 | } |
434 | if (btype_2) { |
435 | save_com[0] = '{'; /* we either want to put the brace |
436 | * right after the if */ |
437 | goto sw_buffer; /* go to common code to get out of |
438 | * this loop */ |
439 | } |
440 | case comment15: /* we have a comment, so we must copy it into |
441 | * the buffer */ |
442 | if (!flushed_nl || sc_end != 0) { |
443 | if (sc_end == 0) { /* if this is the first comment, we |
444 | * must set up the buffer */ |
445 | save_com[0] = save_com[1] = ' '; |
446 | sc_end = &(save_com[2]); |
447 | } |
448 | else { |
449 | *sc_end++ = '\n'; /* add newline between |
450 | * comments */ |
451 | *sc_end++ = ' '; |
452 | --line_no; |
453 | } |
454 | *sc_end++ = '/'; /* copy in start of comment */ |
455 | *sc_end++ = '*'; |
456 | |
457 | for (;;) { /* loop until we get to the end of the comment */ |
458 | *sc_end = *buf_ptr++; |
459 | if (buf_ptr >= buf_end) |
460 | fill_buffer(); |
461 | |
462 | if (*sc_end++ == '*' && *buf_ptr == '/') |
463 | break; /* we are at end of comment */ |
464 | |
465 | if (sc_end >= &(save_com[sc_size5000])) { /* check for temp buffer |
466 | * overflow */ |
467 | diag(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever."); |
468 | fflush(output); |
469 | exit(1); |
470 | } |
471 | } |
472 | *sc_end++ = '/'; /* add ending slash */ |
473 | if (++buf_ptr >= buf_end) /* get past / in buffer */ |
474 | fill_buffer(); |
475 | break; |
476 | } |
477 | default: /* it is the start of a normal statment */ |
478 | if (flushed_nl) /* if we flushed a newline, make sure it is |
479 | * put back */ |
480 | force_nl = true1; |
481 | if ((type_code == sp_paren20 && *tokens_token == 'i' |
482 | && last_else && ps.else_if) || |
483 | (type_code == sp_nparen21 && *tokens_token == 'e' |
484 | && e_code != s_code && e_code[-1] == '}')) |
485 | force_nl = false0; |
486 | |
487 | if (sc_end == 0) { /* ignore buffering if comment wasnt |
488 | * saved up */ |
489 | ps.search_brace = false0; |
490 | goto check_type; |
491 | } |
492 | if (force_nl) { /* if we should insert a nl here, put it into |
493 | * the buffer */ |
494 | force_nl = false0; |
495 | --line_no; /* this will be re-increased when the nl is |
496 | * read from the buffer */ |
497 | *sc_end++ = '\n'; |
498 | *sc_end++ = ' '; |
499 | if (verbose && !flushed_nl) /* print error msg if the line |
500 | * was not already broken */ |
501 | diag(0, "Line broken"); |
502 | flushed_nl = false0; |
503 | } |
504 | for (t_ptr = tokens_token; *t_ptr; ++t_ptr) |
505 | *sc_end++ = *t_ptr; /* copy token into temp buffer */ |
506 | ps.procname[0] = 0; |
507 | |
508 | sw_buffer: |
509 | ps.search_brace = false0; /* stop looking for start of |
510 | * stmt */ |
511 | bp_save = buf_ptr; /* save current input buffer */ |
512 | be_save = buf_end; |
513 | buf_ptr = save_com; /* fix so that subsequent calls to |
514 | * lexi will take tokens out of |
515 | * save_com */ |
516 | *sc_end++ = ' ';/* add trailing blank, just in case */ |
517 | buf_end = sc_end; |
518 | sc_end = 0; |
519 | break; |
520 | } /* end of switch */ |
521 | if (type_code != 0) /* we must make this check, just in case there |
522 | * was an unexpected EOF */ |
523 | type_code = lexi(); /* read another token */ |
524 | /* if (ps.search_brace) ps.procname[0] = 0; */ |
525 | if ((is_procname = ps.procname[0]) && flushed_nl |
526 | && !procnames_start_line && ps.in_decl |
527 | && type_code == ident13) |
528 | flushed_nl = 0; |
529 | } /* end of while (search_brace) */ |
530 | last_else = 0; |
531 | check_type: |
532 | if (type_code == 0) { /* we got eof */ |
533 | if (s_lab != e_lab || s_code != e_code |
534 | || s_com != e_com) /* must dump end of line */ |
535 | dump_line(); |
536 | if (ps.tos > 1) /* check for balanced braces */ |
537 | diag(1, "Missing braces at end of file."); |
538 | |
539 | if (verbose) { |
540 | printf("There were %d output lines and %d comments\n", |
541 | ps.out_lines, ps.out_coms); |
542 | printf("(Lines with comments)/(Lines with code): %6.3f\n", |
543 | (1.0 * ps.com_lines) / code_lines); |
544 | } |
545 | fflush(output); |
546 | exit(found_err); |
547 | } |
548 | if ( |
549 | (type_code != comment15) && |
550 | (type_code != newline1) && |
551 | (type_code != preesc17) && |
552 | (type_code != form_feed18)) { |
553 | if (force_nl && |
554 | (type_code != semicolon10) && |
555 | (type_code != lbrace11 || !btype_2)) { |
556 | /* we should force a broken line here */ |
557 | if (verbose && !flushed_nl) |
558 | diag(0, "Line broken"); |
559 | flushed_nl = false0; |
560 | dump_line(); |
561 | ps.want_blank = false0; /* dont insert blank at line start */ |
562 | force_nl = false0; |
563 | } |
564 | ps.in_stmt = true1; /* turn on flag which causes an extra level of |
565 | * indentation. this is turned off by a ; or |
566 | * '}' */ |
567 | if (s_com != e_com) { /* the turkey has embedded a comment |
568 | * in a line. fix it */ |
569 | *e_code++ = ' '; |
570 | for (t_ptr = s_com; *t_ptr; ++t_ptr) { |
571 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
572 | *e_code++ = *t_ptr; |
573 | } |
574 | *e_code++ = ' '; |
575 | *e_code = '\0'; /* null terminate code sect */ |
576 | ps.want_blank = false0; |
577 | e_com = s_com; |
578 | } |
579 | } |
580 | else if (type_code != comment15) /* preserve force_nl thru a comment */ |
581 | force_nl = false0; /* cancel forced newline after newline, form |
582 | * feed, etc */ |
583 | |
584 | |
585 | |
586 | /*-----------------------------------------------------*\ |
587 | | do switch on type of token scanned | |
588 | \*-----------------------------------------------------*/ |
589 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
590 | switch (type_code) { /* now, decide what to do with the token */ |
591 | |
592 | case form_feed18: /* found a form feed in line */ |
593 | ps.use_ff = true1; /* a form feed is treated much like a newline */ |
594 | dump_line(); |
595 | ps.want_blank = false0; |
596 | break; |
597 | |
598 | case newline1: |
599 | if (ps.last_token != comma14 || ps.p_l_follow > 0 |
600 | || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) { |
601 | dump_line(); |
602 | ps.want_blank = false0; |
603 | } |
604 | ++line_no; /* keep track of input line number */ |
605 | break; |
606 | |
607 | case lparen2: /* got a '(' or '[' */ |
608 | ++ps.p_l_follow; /* count parens to make Healy happy */ |
609 | if (ps.want_blank && *tokens_token != '[' && |
610 | (ps.last_token != ident13 || proc_calls_space |
611 | || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon)))) |
612 | *e_code++ = ' '; |
613 | if (ps.in_decl && !ps.block_init) |
614 | if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl19) { |
615 | ps.dumped_decl_indent = 1; |
616 | snprintf(e_code, (l_code - e_code) + 5, |
617 | "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, tokens_token); |
618 | e_code += strlen(e_code); |
619 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
620 | } |
621 | else { |
622 | while ((e_code - s_code) < dec_ind) { |
623 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
624 | *e_code++ = ' '; |
625 | } |
626 | *e_code++ = tokens_token[0]; |
627 | } |
628 | else |
629 | *e_code++ = tokens_token[0]; |
630 | ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code; |
631 | if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent |
632 | && ps.paren_indents[0] < 2 * ps.ind_size) |
633 | ps.paren_indents[0] = 2 * ps.ind_size; |
634 | ps.want_blank = false0; |
635 | if (ps.in_or_st && *tokens_token == '(' && ps.tos <= 2) { |
636 | /* |
637 | * this is a kluge to make sure that declarations will be |
638 | * aligned right if proc decl has an explicit type on it, i.e. |
639 | * "int a(x) {..." |
640 | */ |
641 | parse(semicolon10); /* I said this was a kluge... */ |
642 | ps.in_or_st = false0; /* turn off flag for structure decl or |
643 | * initialization */ |
644 | } |
645 | if (ps.sizeof_keyword) |
646 | ps.sizeof_mask |= 1 << ps.p_l_follow; |
647 | break; |
648 | |
649 | case rparen3: /* got a ')' or ']' */ |
650 | rparen_count--; |
651 | if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) { |
652 | ps.last_u_d = true1; |
653 | ps.cast_mask &= (1 << ps.p_l_follow) - 1; |
654 | } |
655 | ps.sizeof_mask &= (1 << ps.p_l_follow) - 1; |
656 | if (--ps.p_l_follow < 0) { |
657 | ps.p_l_follow = 0; |
658 | diag(0, "Extra %c", *tokens_token); |
659 | } |
660 | if (e_code == s_code) /* if the paren starts the line */ |
661 | ps.paren_level = ps.p_l_follow; /* then indent it */ |
662 | |
663 | *e_code++ = tokens_token[0]; |
664 | ps.want_blank = true1; |
665 | |
666 | if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if |
667 | * (...), or some such */ |
668 | sp_sw = false0; |
669 | force_nl = true1;/* must force newline after if */ |
670 | ps.last_u_d = true1; /* inform lexi that a following |
671 | * operator is unary */ |
672 | ps.in_stmt = false0; /* dont use stmt continuation |
673 | * indentation */ |
674 | |
675 | parse(hd_type); /* let parser worry about if, or whatever */ |
676 | } |
677 | ps.search_brace = btype_2; /* this should insure that constructs |
678 | * such as main(){...} and int[]{...} |
679 | * have their braces put in the right |
680 | * place */ |
681 | break; |
682 | |
683 | case unary_op4: /* this could be any unary operation */ |
684 | if (ps.want_blank) |
685 | *e_code++ = ' '; |
686 | |
687 | if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) { |
688 | snprintf(e_code, (l_code - e_code) + 5, |
689 | "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, tokens_token); |
690 | ps.dumped_decl_indent = 1; |
691 | e_code += strlen(e_code); |
692 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
693 | } |
694 | else { |
695 | char *res = tokens_token; |
696 | |
697 | if (ps.in_decl && !ps.block_init) { /* if this is a unary op |
698 | * in a declaration, we |
699 | * should indent this |
700 | * token */ |
701 | for (i = 0; tokens_token[i]; ++i); /* find length of token */ |
702 | while ((e_code - s_code) < (dec_ind - i)) { |
703 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
704 | *e_code++ = ' '; /* pad it */ |
705 | } |
706 | } |
707 | if (troff && tokens_token[0] == '-' && tokens_token[1] == '>') |
708 | res = "\\(->"; |
709 | for (t_ptr = res; *t_ptr; ++t_ptr) { |
710 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
711 | *e_code++ = *t_ptr; |
712 | } |
713 | } |
714 | ps.want_blank = false0; |
715 | break; |
716 | |
717 | case binary_op5: /* any binary operation */ |
718 | if (ps.want_blank) |
719 | *e_code++ = ' '; |
720 | { |
721 | char *res = tokens_token; |
722 | |
723 | if (troff) |
724 | switch (tokens_token[0]) { |
725 | case '<': |
726 | if (tokens_token[1] == '=') |
727 | res = "\\(<="; |
728 | break; |
729 | case '>': |
730 | if (tokens_token[1] == '=') |
731 | res = "\\(>="; |
732 | break; |
733 | case '!': |
734 | if (tokens_token[1] == '=') |
735 | res = "\\(!="; |
736 | break; |
737 | case '|': |
738 | if (tokens_token[1] == '|') |
739 | res = "\\(br\\(br"; |
740 | else if (tokens_token[1] == 0) |
741 | res = "\\(br"; |
742 | break; |
743 | } |
744 | for (t_ptr = res; *t_ptr; ++t_ptr) { |
745 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
746 | *e_code++ = *t_ptr; /* move the operator */ |
747 | } |
748 | } |
749 | ps.want_blank = true1; |
750 | break; |
751 | |
752 | case postop6: /* got a trailing ++ or -- */ |
753 | *e_code++ = tokens_token[0]; |
754 | *e_code++ = tokens_token[1]; |
755 | ps.want_blank = true1; |
756 | break; |
757 | |
758 | case question7: /* got a ? */ |
759 | squest++; /* this will be used when a later colon |
760 | * appears so we can distinguish the |
761 | * <c>?<n>:<n> construct */ |
762 | if (ps.want_blank) |
763 | *e_code++ = ' '; |
764 | *e_code++ = '?'; |
765 | ps.want_blank = true1; |
766 | break; |
767 | |
768 | case casestmt8: /* got word 'case' or 'default' */ |
769 | scase = true1; /* so we can process the later colon properly */ |
770 | goto copy_id; |
771 | |
772 | case colon9: /* got a ':' */ |
773 | if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */ |
774 | --squest; |
775 | if (ps.want_blank) |
776 | *e_code++ = ' '; |
777 | *e_code++ = ':'; |
778 | ps.want_blank = true1; |
779 | break; |
780 | } |
781 | if (ps.in_decl) { |
782 | *e_code++ = ':'; |
783 | ps.want_blank = false0; |
784 | break; |
785 | } |
786 | ps.in_stmt = false0; /* seeing a label does not imply we are in a |
787 | * stmt */ |
788 | for (t_ptr = s_code; *t_ptr; ++t_ptr) |
789 | *e_lab++ = *t_ptr; /* turn everything so far into a label */ |
790 | e_code = s_code; |
791 | *e_lab++ = ':'; |
792 | *e_lab++ = ' '; |
793 | *e_lab = '\0'; |
794 | |
795 | force_nl = ps.pcase = scase; /* ps.pcase will be used by |
796 | * dump_line to decide how to |
797 | * indent the label. force_nl |
798 | * will force a case n: to be |
799 | * on a line by itself */ |
800 | scase = false0; |
801 | ps.want_blank = false0; |
802 | break; |
803 | |
804 | case semicolon10: /* got a ';' */ |
805 | ps.in_or_st = false0;/* we are not in an initialization or |
806 | * structure declaration */ |
807 | scase = false0; /* these will only need resetting in a error */ |
808 | squest = 0; |
809 | if (ps.last_token == rparen3 && rparen_count == 0) |
810 | ps.in_parameter_declaration = 0; |
811 | ps.cast_mask = 0; |
812 | ps.sizeof_mask = 0; |
813 | ps.block_init = 0; |
814 | ps.block_init_level = 0; |
815 | ps.just_saw_decl--; |
816 | |
817 | if (ps.in_decl && s_code == e_code && !ps.block_init) |
818 | while ((e_code - s_code) < (dec_ind - 1)) { |
819 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
820 | *e_code++ = ' '; |
821 | } |
822 | |
823 | ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level |
824 | * structure declaration, we |
825 | * arent any more */ |
826 | |
827 | if ((!sp_sw || hd_type != forstmt24) && ps.p_l_follow > 0) { |
828 | |
829 | /* |
830 | * This should be true iff there were unbalanced parens in the |
831 | * stmt. It is a bit complicated, because the semicolon might |
832 | * be in a for stmt |
833 | */ |
834 | diag(1, "Unbalanced parens"); |
835 | ps.p_l_follow = 0; |
836 | if (sp_sw) { /* this is a check for a if, while, etc. with |
837 | * unbalanced parens */ |
838 | sp_sw = false0; |
839 | parse(hd_type); /* dont lose the if, or whatever */ |
840 | } |
841 | } |
842 | *e_code++ = ';'; |
843 | ps.want_blank = true1; |
844 | ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the |
845 | * middle of a stmt */ |
846 | |
847 | if (!sp_sw) { /* if not if for (;;) */ |
848 | parse(semicolon10); /* let parser know about end of stmt */ |
849 | force_nl = true1;/* force newline after a end of stmt */ |
850 | } |
851 | break; |
852 | |
853 | case lbrace11: /* got a '{' */ |
854 | ps.in_stmt = false0; /* dont indent the {} */ |
855 | if (!ps.block_init) |
856 | force_nl = true1;/* force other stuff on same line as '{' onto |
857 | * new line */ |
858 | else if (ps.block_init_level <= 0) |
859 | ps.block_init_level = 1; |
860 | else |
861 | ps.block_init_level++; |
862 | |
863 | if (s_code != e_code && !ps.block_init) { |
864 | if (!btype_2) { |
865 | dump_line(); |
866 | ps.want_blank = false0; |
867 | } |
868 | else if (ps.in_parameter_declaration && !ps.in_or_st) { |
869 | ps.i_l_follow = 0; |
870 | dump_line(); |
871 | ps.want_blank = false0; |
872 | } |
873 | } |
874 | if (ps.in_parameter_declaration) |
875 | prefix_blankline_requested = 0; |
876 | |
877 | if (ps.p_l_follow > 0) { /* check for preceding unbalanced |
878 | * parens */ |
879 | diag(1, "Unbalanced parens"); |
880 | ps.p_l_follow = 0; |
881 | if (sp_sw) { /* check for unclosed if, for, etc. */ |
882 | sp_sw = false0; |
883 | parse(hd_type); |
884 | ps.ind_level = ps.i_l_follow; |
885 | } |
886 | } |
887 | if (s_code == e_code) |
888 | ps.ind_stmt = false0; /* dont put extra indentation on line |
889 | * with '{' */ |
890 | if (ps.in_decl && ps.in_or_st) { /* this is either a structure |
891 | * declaration or an init */ |
892 | di_stack[ps.dec_nest++] = dec_ind; |
893 | /* ? dec_ind = 0; */ |
894 | } |
895 | else { |
896 | ps.decl_on_line = false0; |
897 | /* we can't be in the middle of a declaration, so don't do |
898 | * special indentation of comments */ |
899 | if (blanklines_after_declarations_at_proctop |
900 | && ps.in_parameter_declaration) |
901 | postfix_blankline_requested = 1; |
902 | ps.in_parameter_declaration = 0; |
903 | } |
904 | dec_ind = 0; |
905 | parse(lbrace11); /* let parser know about this */ |
906 | if (ps.want_blank) /* put a blank before '{' if '{' is not at |
907 | * start of line */ |
908 | *e_code++ = ' '; |
909 | ps.want_blank = false0; |
910 | *e_code++ = '{'; |
911 | ps.just_saw_decl = 0; |
912 | break; |
913 | |
914 | case rbrace12: /* got a '}' */ |
915 | if (ps.p_stack[ps.tos] == decl19 && !ps.block_init) /* semicolons can be |
916 | * omitted in |
917 | * declarations */ |
918 | parse(semicolon10); |
919 | if (ps.p_l_follow) {/* check for unclosed if, for, else. */ |
920 | diag(1, "Unbalanced parens"); |
921 | ps.p_l_follow = 0; |
922 | sp_sw = false0; |
923 | } |
924 | ps.just_saw_decl = 0; |
925 | ps.block_init_level--; |
926 | if (s_code != e_code && !ps.block_init) { /* '}' must be first on |
927 | * line */ |
928 | if (verbose) |
929 | diag(0, "Line broken"); |
930 | dump_line(); |
931 | } |
932 | *e_code++ = '}'; |
933 | ps.want_blank = true1; |
934 | ps.in_stmt = ps.ind_stmt = false0; |
935 | if (ps.dec_nest > 0) { /* we are in multi-level structure |
936 | * declaration */ |
937 | dec_ind = di_stack[--ps.dec_nest]; |
938 | if (ps.dec_nest == 0 && !ps.in_parameter_declaration) |
939 | ps.just_saw_decl = 2; |
940 | ps.in_decl = true1; |
941 | } |
942 | prefix_blankline_requested = 0; |
943 | parse(rbrace12); /* let parser know about this */ |
944 | ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead30 |
945 | && ps.il[ps.tos] >= ps.ind_level; |
946 | if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0) |
947 | postfix_blankline_requested = 1; |
948 | break; |
949 | |
950 | case swstmt16: /* got keyword "switch" */ |
951 | sp_sw = true1; |
952 | hd_type = swstmt16; /* keep this for when we have seen the |
953 | * expression */ |
954 | goto copy_id; /* go move the token into buffer */ |
955 | |
956 | case sp_paren20: /* token is if, while, for */ |
957 | sp_sw = true1; /* the interesting stuff is done after the |
958 | * expression is scanned */ |
959 | hd_type = (*tokens_token == 'i' ? ifstmt22 : |
960 | (*tokens_token == 'w' ? whilestmt23 : forstmt24)); |
961 | |
962 | /* |
963 | * remember the type of header for later use by parser |
964 | */ |
965 | goto copy_id; /* copy the token into line */ |
966 | |
967 | case sp_nparen21: /* got else, do */ |
968 | ps.in_stmt = false0; |
969 | if (*tokens_token == 'e') { |
970 | if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) { |
971 | if (verbose) |
972 | diag(0, "Line broken"); |
973 | dump_line();/* make sure this starts a line */ |
974 | ps.want_blank = false0; |
975 | } |
976 | force_nl = true1;/* also, following stuff must go onto new line */ |
977 | last_else = 1; |
978 | parse(elselit27); |
979 | } |
980 | else { |
981 | if (e_code != s_code) { /* make sure this starts a line */ |
982 | if (verbose) |
983 | diag(0, "Line broken"); |
984 | dump_line(); |
985 | ps.want_blank = false0; |
986 | } |
987 | force_nl = true1;/* also, following stuff must go onto new line */ |
988 | last_else = 0; |
989 | parse(dolit28); |
990 | } |
991 | goto copy_id; /* move the token into line */ |
992 | |
993 | case decl19: /* we have a declaration type (int, register, |
994 | * etc.) */ |
995 | parse(decl19); /* let parser worry about indentation */ |
996 | if (ps.last_token == rparen3 && ps.tos <= 1) { |
997 | ps.in_parameter_declaration = 1; |
998 | if (s_code != e_code) { |
999 | dump_line(); |
1000 | ps.want_blank = 0; |
1001 | } |
1002 | } |
1003 | if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) { |
1004 | ps.ind_level = ps.i_l_follow = 1; |
1005 | ps.ind_stmt = 0; |
1006 | } |
1007 | ps.in_or_st = true1; /* this might be a structure or initialization |
1008 | * declaration */ |
1009 | ps.in_decl = ps.decl_on_line = true1; |
1010 | if ( /* !ps.in_or_st && */ ps.dec_nest <= 0) |
1011 | ps.just_saw_decl = 2; |
1012 | prefix_blankline_requested = 0; |
1013 | for (i = 0; tokens_token[i++];); /* get length of token */ |
1014 | |
1015 | /* |
1016 | * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent |
1017 | * : i); |
1018 | */ |
1019 | dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i; |
1020 | tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0); |
1021 | goto copy_id; |
1022 | |
1023 | case ident13: /* got an identifier or constant */ |
1024 | if (ps.in_decl) { /* if we are in a declaration, we must indent |
1025 | * identifier */ |
1026 | if (ps.want_blank) |
1027 | *e_code++ = ' '; |
1028 | ps.want_blank = false0; |
1029 | if (is_procname == 0 || !procnames_start_line) { |
1030 | if (!ps.block_init) { |
1031 | if (troff && !ps.dumped_decl_indent) { |
1032 | snprintf(e_code, (l_code - e_code) + 5, |
1033 | "\n.De %dp+\200p\n", dec_ind * 7); |
1034 | ps.dumped_decl_indent = 1; |
1035 | e_code += strlen(e_code); |
1036 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
1037 | } else { |
1038 | int cur_dec_ind; |
1039 | int pos, startpos; |
1040 | |
1041 | /* |
1042 | * in order to get the tab math right for |
1043 | * indentations that are not multiples of 8 we |
1044 | * need to modify both startpos and dec_ind |
1045 | * (cur_dec_ind) here by eight minus the |
1046 | * remainder of the current starting column |
1047 | * divided by eight. This seems to be a |
1048 | * properly working fix |
1049 | */ |
1050 | startpos = e_code - s_code; |
1051 | cur_dec_ind = dec_ind; |
1052 | pos = startpos; |
1053 | if ((ps.ind_level * ps.ind_size) % 8 != 0) { |
1054 | pos += (ps.ind_level * ps.ind_size) % 8; |
1055 | cur_dec_ind += (ps.ind_level * ps.ind_size) % 8; |
1056 | } |
1057 | |
1058 | if (tabs_to_var) { |
1059 | while ((pos & ~7) + 8 <= cur_dec_ind) { |
1060 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
1061 | *e_code++ = '\t'; |
1062 | pos = (pos & ~7) + 8; |
1063 | } |
1064 | } |
1065 | while (pos < cur_dec_ind) { |
1066 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
1067 | *e_code++ = ' '; |
1068 | pos++; |
1069 | } |
1070 | if (ps.want_blank && e_code - s_code == startpos) |
1071 | *e_code++ = ' '; |
1072 | ps.want_blank = false0; |
1073 | } |
1074 | } |
1075 | } |
1076 | else { |
1077 | if (dec_ind && s_code != e_code) |
1078 | dump_line(); |
1079 | dec_ind = 0; |
1080 | ps.want_blank = false0; |
1081 | } |
1082 | } |
1083 | else if (sp_sw && ps.p_l_follow == 0) { |
1084 | sp_sw = false0; |
1085 | force_nl = true1; |
1086 | ps.last_u_d = true1; |
1087 | ps.in_stmt = false0; |
1088 | parse(hd_type); |
1089 | } |
1090 | copy_id: |
1091 | if (ps.want_blank) |
1092 | *e_code++ = ' '; |
1093 | if (troff && ps.its_a_keyword) { |
1094 | e_code = chfont(&bodyf, &keywordf, e_code); |
1095 | for (t_ptr = tokens_token; *t_ptr; ++t_ptr) { |
1096 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
1097 | *e_code++ = keywordf.allcaps && |
1098 | islower((unsigned char)*t_ptr) ? |
1099 | toupper((unsigned char)*t_ptr) : *t_ptr; |
1100 | } |
1101 | e_code = chfont(&keywordf, &bodyf, e_code); |
1102 | } |
1103 | else |
1104 | for (t_ptr = tokens_token; *t_ptr; ++t_ptr) { |
1105 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
1106 | *e_code++ = *t_ptr; |
1107 | } |
1108 | ps.want_blank = true1; |
1109 | break; |
1110 | |
1111 | case period32: /* treat a period kind of like a binary |
1112 | * operation */ |
1113 | *e_code++ = '.'; /* move the period into line */ |
1114 | ps.want_blank = false0; /* dont put a blank after a period */ |
1115 | break; |
1116 | |
1117 | case comma14: |
1118 | ps.want_blank = (s_code != e_code); /* only put blank after comma |
1119 | * if comma does not start the |
1120 | * line */ |
1121 | if (ps.in_decl && is_procname == 0 && !ps.block_init) |
1122 | while ((e_code - s_code) < (dec_ind - 1)) { |
1123 | CHECK_SIZE_CODEif (e_code >= l_code) { int nsize = l_code-s_code+400; codebuf = realloc(codebuf, nsize); if (codebuf == ((void *)0)) err(1 , ((void *)0)); e_code = codebuf + (e_code-s_code) + 1; l_code = codebuf + nsize - 5; s_code = codebuf + 1; }; |
1124 | *e_code++ = ' '; |
1125 | } |
1126 | |
1127 | *e_code++ = ','; |
1128 | if (ps.p_l_follow == 0) { |
1129 | if (ps.block_init_level <= 0) |
1130 | ps.block_init = 0; |
1131 | if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8)) |
1132 | force_nl = true1; |
1133 | } |
1134 | break; |
1135 | |
1136 | case preesc17: /* got the character '#' */ |
1137 | if ((s_com != e_com) || |
1138 | (s_lab != e_lab) || |
1139 | (s_code != e_code)) |
1140 | dump_line(); |
1141 | *e_lab++ = '#'; /* move whole line to 'label' buffer */ |
1142 | { |
1143 | int in_comment = 0; |
1144 | int com_start = 0; |
1145 | char quote = 0; |
1146 | int com_end = 0; |
1147 | |
1148 | while (*buf_ptr == ' ' || *buf_ptr == '\t') { |
1149 | buf_ptr++; |
1150 | if (buf_ptr >= buf_end) |
1151 | fill_buffer(); |
1152 | } |
1153 | while (*buf_ptr != '\n' || (in_comment && !had_eof)) { |
1154 | CHECK_SIZE_LABif (e_lab >= l_lab) { int nsize = l_lab-s_lab+400; labbuf = realloc(labbuf, nsize); if (labbuf == ((void *)0)) err(1, (( void *)0)); e_lab = labbuf + (e_lab-s_lab) + 1; l_lab = labbuf + nsize - 5; s_lab = labbuf + 1; }; |
1155 | *e_lab = *buf_ptr++; |
1156 | if (buf_ptr >= buf_end) |
1157 | fill_buffer(); |
1158 | switch (*e_lab++) { |
1159 | case BACKSLASH'\\': |
1160 | if (troff) |
1161 | *e_lab++ = BACKSLASH'\\'; |
1162 | if (!in_comment) { |
1163 | *e_lab++ = *buf_ptr++; |
1164 | if (buf_ptr >= buf_end) |
1165 | fill_buffer(); |
1166 | } |
1167 | break; |
1168 | case '/': |
1169 | if (*buf_ptr == '*' && !in_comment && !quote) { |
1170 | in_comment = 1; |
1171 | *e_lab++ = *buf_ptr++; |
1172 | com_start = e_lab - s_lab - 2; |
1173 | } |
1174 | break; |
1175 | case '"': |
1176 | if (quote == '"') |
1177 | quote = 0; |
1178 | break; |
1179 | case '\'': |
1180 | if (quote == '\'') |
1181 | quote = 0; |
1182 | break; |
1183 | case '*': |
1184 | if (*buf_ptr == '/' && in_comment) { |
1185 | in_comment = 0; |
1186 | *e_lab++ = *buf_ptr++; |
1187 | com_end = e_lab - s_lab; |
1188 | } |
1189 | break; |
1190 | } |
1191 | } |
1192 | |
1193 | while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) |
1194 | e_lab--; |
1195 | if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on |
1196 | * preprocessor line */ |
1197 | if (sc_end == 0) /* if this is the first comment, we |
1198 | * must set up the buffer */ |
1199 | sc_end = &(save_com[0]); |
1200 | else { |
1201 | *sc_end++ = '\n'; /* add newline between |
1202 | * comments */ |
1203 | *sc_end++ = ' '; |
1204 | --line_no; |
1205 | } |
1206 | bcopy(s_lab + com_start, sc_end, com_end - com_start); |
1207 | sc_end += com_end - com_start; |
1208 | if (sc_end >= &save_com[sc_size5000]) |
1209 | abort(); |
1210 | e_lab = s_lab + com_start; |
1211 | while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) |
1212 | e_lab--; |
1213 | bp_save = buf_ptr; /* save current input buffer */ |
1214 | be_save = buf_end; |
1215 | buf_ptr = save_com; /* fix so that subsequent calls to |
1216 | * lexi will take tokens out of |
1217 | * save_com */ |
1218 | *sc_end++ = ' '; /* add trailing blank, just in case */ |
1219 | buf_end = sc_end; |
1220 | sc_end = 0; |
1221 | } |
1222 | *e_lab = '\0'; /* null terminate line */ |
1223 | ps.pcase = false0; |
1224 | } |
1225 | |
1226 | if (strncmp(s_lab, "#if", 3) == 0) { |
1227 | if (blanklines_around_conditional_compilation) { |
1228 | int c; |
1229 | prefix_blankline_requested++; |
1230 | while ((c = getc(input)(!__isthreaded ? (--(input)->_r < 0 ? __srget(input) : ( int)(*(input)->_p++)) : (getc)(input))) == '\n'); |
1231 | ungetc(c, input); |
1232 | } |
1233 | if (ifdef_level < sizeof state_stack / sizeof state_stack[0]) { |
1234 | match_state[ifdef_level].tos = -1; |
1235 | state_stack[ifdef_level++] = ps; |
1236 | } |
1237 | else |
1238 | diag(1, "#if stack overflow"); |
1239 | } |
1240 | else if (strncmp(s_lab, "#else", 5) == 0) |
1241 | if (ifdef_level <= 0) |
1242 | diag(1, "Unmatched #else"); |
1243 | else { |
1244 | match_state[ifdef_level - 1] = ps; |
1245 | ps = state_stack[ifdef_level - 1]; |
1246 | } |
1247 | else if (strncmp(s_lab, "#endif", 6) == 0) { |
1248 | if (ifdef_level <= 0) |
1249 | diag(1, "Unmatched #endif"); |
1250 | else { |
1251 | ifdef_level--; |
1252 | |
1253 | #ifdef undef |
1254 | /* |
1255 | * This match needs to be more intelligent before the |
1256 | * message is useful |
1257 | */ |
1258 | if (match_state[ifdef_level].tos >= 0 |
1259 | && bcmp(&ps, &match_state[ifdef_level], sizeof ps)) |
1260 | diag(0, "Syntactically inconsistent #ifdef alternatives."); |
1261 | #endif |
1262 | } |
1263 | if (blanklines_around_conditional_compilation) { |
1264 | postfix_blankline_requested++; |
1265 | n_real_blanklines = 0; |
1266 | } |
1267 | } |
1268 | break; /* subsequent processing of the newline |
1269 | * character will cause the line to be printed */ |
1270 | |
1271 | case comment15: /* we have gotten a comment this is a biggie */ |
1272 | if (flushed_nl) { /* we should force a broken line here */ |
1273 | flushed_nl = false0; |
Value stored to 'flushed_nl' is never read | |
1274 | dump_line(); |
1275 | ps.want_blank = false0; /* dont insert blank at line start */ |
1276 | force_nl = false0; |
1277 | } |
1278 | pr_comment(); |
1279 | break; |
1280 | } /* end of big switch stmt */ |
1281 | |
1282 | *e_code = '\0'; /* make sure code section is null terminated */ |
1283 | if (type_code != comment15 && type_code != newline1 && type_code != preesc17) |
1284 | ps.last_token = type_code; |
1285 | } /* end of main while (1) loop */ |
1286 | } |
1287 | |
1288 | /* |
1289 | * copy input file to backup file if in_name is /blah/blah/blah/file, then |
1290 | * backup file will be ".Bfile" then make the backup file the input and |
1291 | * original input file the output |
1292 | */ |
1293 | void |
1294 | bakcopy(void) |
1295 | { |
1296 | int n, |
1297 | bakchn; |
1298 | char buff[8 * 1024]; |
1299 | char *p; |
1300 | |
1301 | /* construct file name .Bfile */ |
1302 | for (p = in_name; *p; p++); /* skip to end of string */ |
1303 | while (p > in_name && *p != '/') /* find last '/' */ |
1304 | p--; |
1305 | if (*p == '/') |
1306 | p++; |
1307 | if (snprintf(bakfile, PATH_MAX1024, "%s.BAK", p) >= PATH_MAX1024) |
1308 | errc(1, ENAMETOOLONG63, "%s.BAK", p); |
1309 | |
1310 | /* copy in_name to backup file */ |
1311 | bakchn = open(bakfile, O_CREAT0x0200 | O_TRUNC0x0400 | O_WRONLY0x0001, 0600); |
1312 | if (bakchn == -1) |
1313 | err(1, "%s", bakfile); |
1314 | while ((n = read(fileno(input)(!__isthreaded ? ((input)->_file) : (fileno)(input)), buff, sizeof buff)) > 0) |
1315 | if (write(bakchn, buff, n) != n) |
1316 | err(1, "%s", bakfile); |
1317 | if (n == -1) |
1318 | err(1, "%s", in_name); |
1319 | close(bakchn); |
1320 | fclose(input); |
1321 | |
1322 | /* re-open backup file as the input file */ |
1323 | input = fopen(bakfile, "r"); |
1324 | if (input == NULL((void *)0)) |
1325 | err(1, "%s", bakfile); |
1326 | /* now the original input file will be the output */ |
1327 | output = fopen(in_name, "w"); |
1328 | if (output == NULL((void *)0)) { |
1329 | int saved_errno = errno(*__errno()); |
1330 | unlink(bakfile); |
1331 | errc(1, saved_errno, "%s", in_name); |
1332 | } |
1333 | } |