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1 | /* | |
2 | * GIT - The information manager from hell | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | * Copyright (C) Johannes Schindelin, 2005 | |
6 | * | |
7 | */ | |
8 | #include "cache.h" | |
9 | #include "exec_cmd.h" | |
10 | #include "strbuf.h" | |
11 | #include "quote.h" | |
12 | ||
13 | #define MAXNAME (256) | |
14 | ||
15 | static FILE *config_file; | |
16 | static const char *config_file_name; | |
17 | static int config_linenr; | |
18 | static int config_file_eof; | |
19 | static int zlib_compression_seen; | |
20 | ||
21 | const char *config_exclusive_filename = NULL; | |
22 | ||
23 | static void lowercase(char *p) | |
24 | { | |
25 | for (; *p; p++) | |
26 | *p = tolower(*p); | |
27 | } | |
28 | ||
29 | void git_config_push_parameter(const char *text) | |
30 | { | |
31 | struct strbuf env = STRBUF_INIT; | |
32 | const char *old = getenv(CONFIG_DATA_ENVIRONMENT); | |
33 | if (old) { | |
34 | strbuf_addstr(&env, old); | |
35 | strbuf_addch(&env, ' '); | |
36 | } | |
37 | sq_quote_buf(&env, text); | |
38 | setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1); | |
39 | strbuf_release(&env); | |
40 | } | |
41 | ||
42 | static int git_config_parse_parameter(const char *text, | |
43 | config_fn_t fn, void *data) | |
44 | { | |
45 | struct strbuf tmp = STRBUF_INIT; | |
46 | struct strbuf **pair; | |
47 | strbuf_addstr(&tmp, text); | |
48 | pair = strbuf_split(&tmp, '='); | |
49 | if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') | |
50 | strbuf_setlen(pair[0], pair[0]->len - 1); | |
51 | strbuf_trim(pair[0]); | |
52 | if (!pair[0]->len) { | |
53 | strbuf_list_free(pair); | |
54 | return error("bogus config parameter: %s", text); | |
55 | } | |
56 | lowercase(pair[0]->buf); | |
57 | if (fn(pair[0]->buf, pair[1] ? pair[1]->buf : NULL, data) < 0) { | |
58 | strbuf_list_free(pair); | |
59 | return -1; | |
60 | } | |
61 | strbuf_list_free(pair); | |
62 | return 0; | |
63 | } | |
64 | ||
65 | int git_config_from_parameters(config_fn_t fn, void *data) | |
66 | { | |
67 | const char *env = getenv(CONFIG_DATA_ENVIRONMENT); | |
68 | char *envw; | |
69 | const char **argv = NULL; | |
70 | int nr = 0, alloc = 0; | |
71 | int i; | |
72 | ||
73 | if (!env) | |
74 | return 0; | |
75 | /* sq_dequote will write over it */ | |
76 | envw = xstrdup(env); | |
77 | ||
78 | if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) { | |
79 | free(envw); | |
80 | return error("bogus format in " CONFIG_DATA_ENVIRONMENT); | |
81 | } | |
82 | ||
83 | for (i = 0; i < nr; i++) { | |
84 | if (git_config_parse_parameter(argv[i], fn, data) < 0) { | |
85 | free(argv); | |
86 | free(envw); | |
87 | return -1; | |
88 | } | |
89 | } | |
90 | ||
91 | free(argv); | |
92 | free(envw); | |
93 | return nr > 0; | |
94 | } | |
95 | ||
96 | static int get_next_char(void) | |
97 | { | |
98 | int c; | |
99 | FILE *f; | |
100 | ||
101 | c = '\n'; | |
102 | if ((f = config_file) != NULL) { | |
103 | c = fgetc(f); | |
104 | if (c == '\r') { | |
105 | /* DOS like systems */ | |
106 | c = fgetc(f); | |
107 | if (c != '\n') { | |
108 | ungetc(c, f); | |
109 | c = '\r'; | |
110 | } | |
111 | } | |
112 | if (c == '\n') | |
113 | config_linenr++; | |
114 | if (c == EOF) { | |
115 | config_file_eof = 1; | |
116 | c = '\n'; | |
117 | } | |
118 | } | |
119 | return c; | |
120 | } | |
121 | ||
122 | static char *parse_value(void) | |
123 | { | |
124 | static struct strbuf value = STRBUF_INIT; | |
125 | int quote = 0, comment = 0, space = 0; | |
126 | ||
127 | strbuf_reset(&value); | |
128 | for (;;) { | |
129 | int c = get_next_char(); | |
130 | if (c == '\n') { | |
131 | if (quote) | |
132 | return NULL; | |
133 | return value.buf; | |
134 | } | |
135 | if (comment) | |
136 | continue; | |
137 | if (isspace(c) && !quote) { | |
138 | if (value.len) | |
139 | space++; | |
140 | continue; | |
141 | } | |
142 | if (!quote) { | |
143 | if (c == ';' || c == '#') { | |
144 | comment = 1; | |
145 | continue; | |
146 | } | |
147 | } | |
148 | for (; space; space--) | |
149 | strbuf_addch(&value, ' '); | |
150 | if (c == '\\') { | |
151 | c = get_next_char(); | |
152 | switch (c) { | |
153 | case '\n': | |
154 | continue; | |
155 | case 't': | |
156 | c = '\t'; | |
157 | break; | |
158 | case 'b': | |
159 | c = '\b'; | |
160 | break; | |
161 | case 'n': | |
162 | c = '\n'; | |
163 | break; | |
164 | /* Some characters escape as themselves */ | |
165 | case '\\': case '"': | |
166 | break; | |
167 | /* Reject unknown escape sequences */ | |
168 | default: | |
169 | return NULL; | |
170 | } | |
171 | strbuf_addch(&value, c); | |
172 | continue; | |
173 | } | |
174 | if (c == '"') { | |
175 | quote = 1-quote; | |
176 | continue; | |
177 | } | |
178 | strbuf_addch(&value, c); | |
179 | } | |
180 | } | |
181 | ||
182 | static inline int iskeychar(int c) | |
183 | { | |
184 | return isalnum(c) || c == '-'; | |
185 | } | |
186 | ||
187 | static int get_value(config_fn_t fn, void *data, char *name, unsigned int len) | |
188 | { | |
189 | int c; | |
190 | char *value; | |
191 | ||
192 | /* Get the full name */ | |
193 | for (;;) { | |
194 | c = get_next_char(); | |
195 | if (config_file_eof) | |
196 | break; | |
197 | if (!iskeychar(c)) | |
198 | break; | |
199 | name[len++] = tolower(c); | |
200 | if (len >= MAXNAME) | |
201 | return -1; | |
202 | } | |
203 | name[len] = 0; | |
204 | while (c == ' ' || c == '\t') | |
205 | c = get_next_char(); | |
206 | ||
207 | value = NULL; | |
208 | if (c != '\n') { | |
209 | if (c != '=') | |
210 | return -1; | |
211 | value = parse_value(); | |
212 | if (!value) | |
213 | return -1; | |
214 | } | |
215 | return fn(name, value, data); | |
216 | } | |
217 | ||
218 | static int get_extended_base_var(char *name, int baselen, int c) | |
219 | { | |
220 | do { | |
221 | if (c == '\n') | |
222 | return -1; | |
223 | c = get_next_char(); | |
224 | } while (isspace(c)); | |
225 | ||
226 | /* We require the format to be '[base "extension"]' */ | |
227 | if (c != '"') | |
228 | return -1; | |
229 | name[baselen++] = '.'; | |
230 | ||
231 | for (;;) { | |
232 | int c = get_next_char(); | |
233 | if (c == '\n') | |
234 | return -1; | |
235 | if (c == '"') | |
236 | break; | |
237 | if (c == '\\') { | |
238 | c = get_next_char(); | |
239 | if (c == '\n') | |
240 | return -1; | |
241 | } | |
242 | name[baselen++] = c; | |
243 | if (baselen > MAXNAME / 2) | |
244 | return -1; | |
245 | } | |
246 | ||
247 | /* Final ']' */ | |
248 | if (get_next_char() != ']') | |
249 | return -1; | |
250 | return baselen; | |
251 | } | |
252 | ||
253 | static int get_base_var(char *name) | |
254 | { | |
255 | int baselen = 0; | |
256 | ||
257 | for (;;) { | |
258 | int c = get_next_char(); | |
259 | if (config_file_eof) | |
260 | return -1; | |
261 | if (c == ']') | |
262 | return baselen; | |
263 | if (isspace(c)) | |
264 | return get_extended_base_var(name, baselen, c); | |
265 | if (!iskeychar(c) && c != '.') | |
266 | return -1; | |
267 | if (baselen > MAXNAME / 2) | |
268 | return -1; | |
269 | name[baselen++] = tolower(c); | |
270 | } | |
271 | } | |
272 | ||
273 | static int git_parse_file(config_fn_t fn, void *data) | |
274 | { | |
275 | int comment = 0; | |
276 | int baselen = 0; | |
277 | static char var[MAXNAME]; | |
278 | ||
279 | /* U+FEFF Byte Order Mark in UTF8 */ | |
280 | static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf"; | |
281 | const unsigned char *bomptr = utf8_bom; | |
282 | ||
283 | for (;;) { | |
284 | int c = get_next_char(); | |
285 | if (bomptr && *bomptr) { | |
286 | /* We are at the file beginning; skip UTF8-encoded BOM | |
287 | * if present. Sane editors won't put this in on their | |
288 | * own, but e.g. Windows Notepad will do it happily. */ | |
289 | if ((unsigned char) c == *bomptr) { | |
290 | bomptr++; | |
291 | continue; | |
292 | } else { | |
293 | /* Do not tolerate partial BOM. */ | |
294 | if (bomptr != utf8_bom) | |
295 | break; | |
296 | /* No BOM at file beginning. Cool. */ | |
297 | bomptr = NULL; | |
298 | } | |
299 | } | |
300 | if (c == '\n') { | |
301 | if (config_file_eof) | |
302 | return 0; | |
303 | comment = 0; | |
304 | continue; | |
305 | } | |
306 | if (comment || isspace(c)) | |
307 | continue; | |
308 | if (c == '#' || c == ';') { | |
309 | comment = 1; | |
310 | continue; | |
311 | } | |
312 | if (c == '[') { | |
313 | baselen = get_base_var(var); | |
314 | if (baselen <= 0) | |
315 | break; | |
316 | var[baselen++] = '.'; | |
317 | var[baselen] = 0; | |
318 | continue; | |
319 | } | |
320 | if (!isalpha(c)) | |
321 | break; | |
322 | var[baselen] = tolower(c); | |
323 | if (get_value(fn, data, var, baselen+1) < 0) | |
324 | break; | |
325 | } | |
326 | die("bad config file line %d in %s", config_linenr, config_file_name); | |
327 | } | |
328 | ||
329 | static int parse_unit_factor(const char *end, unsigned long *val) | |
330 | { | |
331 | if (!*end) | |
332 | return 1; | |
333 | else if (!strcasecmp(end, "k")) { | |
334 | *val *= 1024; | |
335 | return 1; | |
336 | } | |
337 | else if (!strcasecmp(end, "m")) { | |
338 | *val *= 1024 * 1024; | |
339 | return 1; | |
340 | } | |
341 | else if (!strcasecmp(end, "g")) { | |
342 | *val *= 1024 * 1024 * 1024; | |
343 | return 1; | |
344 | } | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static int git_parse_long(const char *value, long *ret) | |
349 | { | |
350 | if (value && *value) { | |
351 | char *end; | |
352 | long val = strtol(value, &end, 0); | |
353 | unsigned long factor = 1; | |
354 | if (!parse_unit_factor(end, &factor)) | |
355 | return 0; | |
356 | *ret = val * factor; | |
357 | return 1; | |
358 | } | |
359 | return 0; | |
360 | } | |
361 | ||
362 | int git_parse_ulong(const char *value, unsigned long *ret) | |
363 | { | |
364 | if (value && *value) { | |
365 | char *end; | |
366 | unsigned long val = strtoul(value, &end, 0); | |
367 | if (!parse_unit_factor(end, &val)) | |
368 | return 0; | |
369 | *ret = val; | |
370 | return 1; | |
371 | } | |
372 | return 0; | |
373 | } | |
374 | ||
375 | static void die_bad_config(const char *name) | |
376 | { | |
377 | if (config_file_name) | |
378 | die("bad config value for '%s' in %s", name, config_file_name); | |
379 | die("bad config value for '%s'", name); | |
380 | } | |
381 | ||
382 | int git_config_int(const char *name, const char *value) | |
383 | { | |
384 | long ret = 0; | |
385 | if (!git_parse_long(value, &ret)) | |
386 | die_bad_config(name); | |
387 | return ret; | |
388 | } | |
389 | ||
390 | unsigned long git_config_ulong(const char *name, const char *value) | |
391 | { | |
392 | unsigned long ret; | |
393 | if (!git_parse_ulong(value, &ret)) | |
394 | die_bad_config(name); | |
395 | return ret; | |
396 | } | |
397 | ||
398 | static int git_config_maybe_bool_text(const char *name, const char *value) | |
399 | { | |
400 | if (!value) | |
401 | return 1; | |
402 | if (!*value) | |
403 | return 0; | |
404 | if (!strcasecmp(value, "true") | |
405 | || !strcasecmp(value, "yes") | |
406 | || !strcasecmp(value, "on")) | |
407 | return 1; | |
408 | if (!strcasecmp(value, "false") | |
409 | || !strcasecmp(value, "no") | |
410 | || !strcasecmp(value, "off")) | |
411 | return 0; | |
412 | return -1; | |
413 | } | |
414 | ||
415 | int git_config_maybe_bool(const char *name, const char *value) | |
416 | { | |
417 | long v = git_config_maybe_bool_text(name, value); | |
418 | if (0 <= v) | |
419 | return v; | |
420 | if (git_parse_long(value, &v)) | |
421 | return !!v; | |
422 | return -1; | |
423 | } | |
424 | ||
425 | int git_config_bool_or_int(const char *name, const char *value, int *is_bool) | |
426 | { | |
427 | int v = git_config_maybe_bool_text(name, value); | |
428 | if (0 <= v) { | |
429 | *is_bool = 1; | |
430 | return v; | |
431 | } | |
432 | *is_bool = 0; | |
433 | return git_config_int(name, value); | |
434 | } | |
435 | ||
436 | int git_config_bool(const char *name, const char *value) | |
437 | { | |
438 | int discard; | |
439 | return !!git_config_bool_or_int(name, value, &discard); | |
440 | } | |
441 | ||
442 | int git_config_string(const char **dest, const char *var, const char *value) | |
443 | { | |
444 | if (!value) | |
445 | return config_error_nonbool(var); | |
446 | *dest = xstrdup(value); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | int git_config_pathname(const char **dest, const char *var, const char *value) | |
451 | { | |
452 | if (!value) | |
453 | return config_error_nonbool(var); | |
454 | *dest = expand_user_path(value); | |
455 | if (!*dest) | |
456 | die("Failed to expand user dir in: '%s'", value); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | static int git_default_core_config(const char *var, const char *value) | |
461 | { | |
462 | /* This needs a better name */ | |
463 | if (!strcmp(var, "core.filemode")) { | |
464 | trust_executable_bit = git_config_bool(var, value); | |
465 | return 0; | |
466 | } | |
467 | if (!strcmp(var, "core.trustctime")) { | |
468 | trust_ctime = git_config_bool(var, value); | |
469 | return 0; | |
470 | } | |
471 | ||
472 | if (!strcmp(var, "core.quotepath")) { | |
473 | quote_path_fully = git_config_bool(var, value); | |
474 | return 0; | |
475 | } | |
476 | ||
477 | if (!strcmp(var, "core.symlinks")) { | |
478 | has_symlinks = git_config_bool(var, value); | |
479 | return 0; | |
480 | } | |
481 | ||
482 | if (!strcmp(var, "core.ignorecase")) { | |
483 | ignore_case = git_config_bool(var, value); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | if (!strcmp(var, "core.bare")) { | |
488 | is_bare_repository_cfg = git_config_bool(var, value); | |
489 | return 0; | |
490 | } | |
491 | ||
492 | if (!strcmp(var, "core.ignorestat")) { | |
493 | assume_unchanged = git_config_bool(var, value); | |
494 | return 0; | |
495 | } | |
496 | ||
497 | if (!strcmp(var, "core.prefersymlinkrefs")) { | |
498 | prefer_symlink_refs = git_config_bool(var, value); | |
499 | return 0; | |
500 | } | |
501 | ||
502 | if (!strcmp(var, "core.logallrefupdates")) { | |
503 | log_all_ref_updates = git_config_bool(var, value); | |
504 | return 0; | |
505 | } | |
506 | ||
507 | if (!strcmp(var, "core.warnambiguousrefs")) { | |
508 | warn_ambiguous_refs = git_config_bool(var, value); | |
509 | return 0; | |
510 | } | |
511 | ||
512 | if (!strcmp(var, "core.abbrev")) { | |
513 | int abbrev = git_config_int(var, value); | |
514 | if (abbrev < minimum_abbrev || abbrev > 40) | |
515 | return -1; | |
516 | default_abbrev = abbrev; | |
517 | return 0; | |
518 | } | |
519 | ||
520 | if (!strcmp(var, "core.loosecompression")) { | |
521 | int level = git_config_int(var, value); | |
522 | if (level == -1) | |
523 | level = Z_DEFAULT_COMPRESSION; | |
524 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
525 | die("bad zlib compression level %d", level); | |
526 | zlib_compression_level = level; | |
527 | zlib_compression_seen = 1; | |
528 | return 0; | |
529 | } | |
530 | ||
531 | if (!strcmp(var, "core.compression")) { | |
532 | int level = git_config_int(var, value); | |
533 | if (level == -1) | |
534 | level = Z_DEFAULT_COMPRESSION; | |
535 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
536 | die("bad zlib compression level %d", level); | |
537 | core_compression_level = level; | |
538 | core_compression_seen = 1; | |
539 | if (!zlib_compression_seen) | |
540 | zlib_compression_level = level; | |
541 | return 0; | |
542 | } | |
543 | ||
544 | if (!strcmp(var, "core.packedgitwindowsize")) { | |
545 | int pgsz_x2 = getpagesize() * 2; | |
546 | packed_git_window_size = git_config_int(var, value); | |
547 | ||
548 | /* This value must be multiple of (pagesize * 2) */ | |
549 | packed_git_window_size /= pgsz_x2; | |
550 | if (packed_git_window_size < 1) | |
551 | packed_git_window_size = 1; | |
552 | packed_git_window_size *= pgsz_x2; | |
553 | return 0; | |
554 | } | |
555 | ||
556 | if (!strcmp(var, "core.bigfilethreshold")) { | |
557 | long n = git_config_int(var, value); | |
558 | big_file_threshold = 0 < n ? n : 0; | |
559 | return 0; | |
560 | } | |
561 | ||
562 | if (!strcmp(var, "core.packedgitlimit")) { | |
563 | packed_git_limit = git_config_int(var, value); | |
564 | return 0; | |
565 | } | |
566 | ||
567 | if (!strcmp(var, "core.deltabasecachelimit")) { | |
568 | delta_base_cache_limit = git_config_int(var, value); | |
569 | return 0; | |
570 | } | |
571 | ||
572 | if (!strcmp(var, "core.autocrlf")) { | |
573 | if (value && !strcasecmp(value, "input")) { | |
574 | if (core_eol == EOL_CRLF) | |
575 | return error("core.autocrlf=input conflicts with core.eol=crlf"); | |
576 | auto_crlf = AUTO_CRLF_INPUT; | |
577 | return 0; | |
578 | } | |
579 | auto_crlf = git_config_bool(var, value); | |
580 | return 0; | |
581 | } | |
582 | ||
583 | if (!strcmp(var, "core.safecrlf")) { | |
584 | if (value && !strcasecmp(value, "warn")) { | |
585 | safe_crlf = SAFE_CRLF_WARN; | |
586 | return 0; | |
587 | } | |
588 | safe_crlf = git_config_bool(var, value); | |
589 | return 0; | |
590 | } | |
591 | ||
592 | if (!strcmp(var, "core.eol")) { | |
593 | if (value && !strcasecmp(value, "lf")) | |
594 | core_eol = EOL_LF; | |
595 | else if (value && !strcasecmp(value, "crlf")) | |
596 | core_eol = EOL_CRLF; | |
597 | else if (value && !strcasecmp(value, "native")) | |
598 | core_eol = EOL_NATIVE; | |
599 | else | |
600 | core_eol = EOL_UNSET; | |
601 | if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT) | |
602 | return error("core.autocrlf=input conflicts with core.eol=crlf"); | |
603 | return 0; | |
604 | } | |
605 | ||
606 | if (!strcmp(var, "core.notesref")) { | |
607 | notes_ref_name = xstrdup(value); | |
608 | return 0; | |
609 | } | |
610 | ||
611 | if (!strcmp(var, "core.pager")) | |
612 | return git_config_string(&pager_program, var, value); | |
613 | ||
614 | if (!strcmp(var, "core.editor")) | |
615 | return git_config_string(&editor_program, var, value); | |
616 | ||
617 | if (!strcmp(var, "core.askpass")) | |
618 | return git_config_string(&askpass_program, var, value); | |
619 | ||
620 | if (!strcmp(var, "core.excludesfile")) | |
621 | return git_config_pathname(&excludes_file, var, value); | |
622 | ||
623 | if (!strcmp(var, "core.whitespace")) { | |
624 | if (!value) | |
625 | return config_error_nonbool(var); | |
626 | whitespace_rule_cfg = parse_whitespace_rule(value); | |
627 | return 0; | |
628 | } | |
629 | ||
630 | if (!strcmp(var, "core.fsyncobjectfiles")) { | |
631 | fsync_object_files = git_config_bool(var, value); | |
632 | return 0; | |
633 | } | |
634 | ||
635 | if (!strcmp(var, "core.preloadindex")) { | |
636 | core_preload_index = git_config_bool(var, value); | |
637 | return 0; | |
638 | } | |
639 | ||
640 | if (!strcmp(var, "core.createobject")) { | |
641 | if (!strcmp(value, "rename")) | |
642 | object_creation_mode = OBJECT_CREATION_USES_RENAMES; | |
643 | else if (!strcmp(value, "link")) | |
644 | object_creation_mode = OBJECT_CREATION_USES_HARDLINKS; | |
645 | else | |
646 | die("Invalid mode for object creation: %s", value); | |
647 | return 0; | |
648 | } | |
649 | ||
650 | if (!strcmp(var, "core.sparsecheckout")) { | |
651 | core_apply_sparse_checkout = git_config_bool(var, value); | |
652 | return 0; | |
653 | } | |
654 | ||
655 | /* Add other config variables here and to Documentation/config.txt. */ | |
656 | return 0; | |
657 | } | |
658 | ||
659 | static int git_default_user_config(const char *var, const char *value) | |
660 | { | |
661 | if (!strcmp(var, "user.name")) { | |
662 | if (!value) | |
663 | return config_error_nonbool(var); | |
664 | strlcpy(git_default_name, value, sizeof(git_default_name)); | |
665 | user_ident_explicitly_given |= IDENT_NAME_GIVEN; | |
666 | return 0; | |
667 | } | |
668 | ||
669 | if (!strcmp(var, "user.email")) { | |
670 | if (!value) | |
671 | return config_error_nonbool(var); | |
672 | strlcpy(git_default_email, value, sizeof(git_default_email)); | |
673 | user_ident_explicitly_given |= IDENT_MAIL_GIVEN; | |
674 | return 0; | |
675 | } | |
676 | ||
677 | /* Add other config variables here and to Documentation/config.txt. */ | |
678 | return 0; | |
679 | } | |
680 | ||
681 | static int git_default_i18n_config(const char *var, const char *value) | |
682 | { | |
683 | if (!strcmp(var, "i18n.commitencoding")) | |
684 | return git_config_string(&git_commit_encoding, var, value); | |
685 | ||
686 | if (!strcmp(var, "i18n.logoutputencoding")) | |
687 | return git_config_string(&git_log_output_encoding, var, value); | |
688 | ||
689 | /* Add other config variables here and to Documentation/config.txt. */ | |
690 | return 0; | |
691 | } | |
692 | ||
693 | static int git_default_branch_config(const char *var, const char *value) | |
694 | { | |
695 | if (!strcmp(var, "branch.autosetupmerge")) { | |
696 | if (value && !strcasecmp(value, "always")) { | |
697 | git_branch_track = BRANCH_TRACK_ALWAYS; | |
698 | return 0; | |
699 | } | |
700 | git_branch_track = git_config_bool(var, value); | |
701 | return 0; | |
702 | } | |
703 | if (!strcmp(var, "branch.autosetuprebase")) { | |
704 | if (!value) | |
705 | return config_error_nonbool(var); | |
706 | else if (!strcmp(value, "never")) | |
707 | autorebase = AUTOREBASE_NEVER; | |
708 | else if (!strcmp(value, "local")) | |
709 | autorebase = AUTOREBASE_LOCAL; | |
710 | else if (!strcmp(value, "remote")) | |
711 | autorebase = AUTOREBASE_REMOTE; | |
712 | else if (!strcmp(value, "always")) | |
713 | autorebase = AUTOREBASE_ALWAYS; | |
714 | else | |
715 | return error("Malformed value for %s", var); | |
716 | return 0; | |
717 | } | |
718 | ||
719 | /* Add other config variables here and to Documentation/config.txt. */ | |
720 | return 0; | |
721 | } | |
722 | ||
723 | static int git_default_push_config(const char *var, const char *value) | |
724 | { | |
725 | if (!strcmp(var, "push.default")) { | |
726 | if (!value) | |
727 | return config_error_nonbool(var); | |
728 | else if (!strcmp(value, "nothing")) | |
729 | push_default = PUSH_DEFAULT_NOTHING; | |
730 | else if (!strcmp(value, "matching")) | |
731 | push_default = PUSH_DEFAULT_MATCHING; | |
732 | else if (!strcmp(value, "upstream")) | |
733 | push_default = PUSH_DEFAULT_UPSTREAM; | |
734 | else if (!strcmp(value, "tracking")) /* deprecated */ | |
735 | push_default = PUSH_DEFAULT_UPSTREAM; | |
736 | else if (!strcmp(value, "current")) | |
737 | push_default = PUSH_DEFAULT_CURRENT; | |
738 | else { | |
739 | error("Malformed value for %s: %s", var, value); | |
740 | return error("Must be one of nothing, matching, " | |
741 | "tracking or current."); | |
742 | } | |
743 | return 0; | |
744 | } | |
745 | ||
746 | /* Add other config variables here and to Documentation/config.txt. */ | |
747 | return 0; | |
748 | } | |
749 | ||
750 | static int git_default_mailmap_config(const char *var, const char *value) | |
751 | { | |
752 | if (!strcmp(var, "mailmap.file")) | |
753 | return git_config_string(&git_mailmap_file, var, value); | |
754 | ||
755 | /* Add other config variables here and to Documentation/config.txt. */ | |
756 | return 0; | |
757 | } | |
758 | ||
759 | int git_default_config(const char *var, const char *value, void *dummy) | |
760 | { | |
761 | if (!prefixcmp(var, "core.")) | |
762 | return git_default_core_config(var, value); | |
763 | ||
764 | if (!prefixcmp(var, "user.")) | |
765 | return git_default_user_config(var, value); | |
766 | ||
767 | if (!prefixcmp(var, "i18n.")) | |
768 | return git_default_i18n_config(var, value); | |
769 | ||
770 | if (!prefixcmp(var, "branch.")) | |
771 | return git_default_branch_config(var, value); | |
772 | ||
773 | if (!prefixcmp(var, "push.")) | |
774 | return git_default_push_config(var, value); | |
775 | ||
776 | if (!prefixcmp(var, "mailmap.")) | |
777 | return git_default_mailmap_config(var, value); | |
778 | ||
779 | if (!prefixcmp(var, "advice.")) | |
780 | return git_default_advice_config(var, value); | |
781 | ||
782 | if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) { | |
783 | pager_use_color = git_config_bool(var,value); | |
784 | return 0; | |
785 | } | |
786 | ||
787 | /* Add other config variables here and to Documentation/config.txt. */ | |
788 | return 0; | |
789 | } | |
790 | ||
791 | int git_config_from_file(config_fn_t fn, const char *filename, void *data) | |
792 | { | |
793 | int ret; | |
794 | FILE *f = fopen(filename, "r"); | |
795 | ||
796 | ret = -1; | |
797 | if (f) { | |
798 | config_file = f; | |
799 | config_file_name = filename; | |
800 | config_linenr = 1; | |
801 | config_file_eof = 0; | |
802 | ret = git_parse_file(fn, data); | |
803 | fclose(f); | |
804 | config_file_name = NULL; | |
805 | } | |
806 | return ret; | |
807 | } | |
808 | ||
809 | const char *git_etc_gitconfig(void) | |
810 | { | |
811 | static const char *system_wide; | |
812 | if (!system_wide) | |
813 | system_wide = system_path(ETC_GITCONFIG); | |
814 | return system_wide; | |
815 | } | |
816 | ||
817 | int git_env_bool(const char *k, int def) | |
818 | { | |
819 | const char *v = getenv(k); | |
820 | return v ? git_config_bool(k, v) : def; | |
821 | } | |
822 | ||
823 | int git_config_system(void) | |
824 | { | |
825 | return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0); | |
826 | } | |
827 | ||
828 | int git_config_early(config_fn_t fn, void *data, const char *repo_config) | |
829 | { | |
830 | int ret = 0, found = 0; | |
831 | const char *home = NULL; | |
832 | ||
833 | /* Setting $GIT_CONFIG makes git read _only_ the given config file. */ | |
834 | if (config_exclusive_filename) | |
835 | return git_config_from_file(fn, config_exclusive_filename, data); | |
836 | if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) { | |
837 | ret += git_config_from_file(fn, git_etc_gitconfig(), | |
838 | data); | |
839 | found += 1; | |
840 | } | |
841 | ||
842 | home = getenv("HOME"); | |
843 | if (home) { | |
844 | char *user_config = xstrdup(mkpath("%s/.gitconfig", home)); | |
845 | if (!access(user_config, R_OK)) { | |
846 | ret += git_config_from_file(fn, user_config, data); | |
847 | found += 1; | |
848 | } | |
849 | free(user_config); | |
850 | } | |
851 | ||
852 | if (repo_config && !access(repo_config, R_OK)) { | |
853 | ret += git_config_from_file(fn, repo_config, data); | |
854 | found += 1; | |
855 | } | |
856 | ||
857 | switch (git_config_from_parameters(fn, data)) { | |
858 | case -1: /* error */ | |
859 | ret--; | |
860 | break; | |
861 | case 0: /* found nothing */ | |
862 | break; | |
863 | default: /* found at least one item */ | |
864 | found++; | |
865 | break; | |
866 | } | |
867 | ||
868 | return ret == 0 ? found : ret; | |
869 | } | |
870 | ||
871 | int git_config(config_fn_t fn, void *data) | |
872 | { | |
873 | char *repo_config = NULL; | |
874 | int ret; | |
875 | ||
876 | repo_config = git_pathdup("config"); | |
877 | ret = git_config_early(fn, data, repo_config); | |
878 | if (repo_config) | |
879 | free(repo_config); | |
880 | return ret; | |
881 | } | |
882 | ||
883 | /* | |
884 | * Find all the stuff for git_config_set() below. | |
885 | */ | |
886 | ||
887 | #define MAX_MATCHES 512 | |
888 | ||
889 | static struct { | |
890 | int baselen; | |
891 | char *key; | |
892 | int do_not_match; | |
893 | regex_t *value_regex; | |
894 | int multi_replace; | |
895 | size_t offset[MAX_MATCHES]; | |
896 | enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state; | |
897 | int seen; | |
898 | } store; | |
899 | ||
900 | static int matches(const char *key, const char *value) | |
901 | { | |
902 | return !strcmp(key, store.key) && | |
903 | (store.value_regex == NULL || | |
904 | (store.do_not_match ^ | |
905 | !regexec(store.value_regex, value, 0, NULL, 0))); | |
906 | } | |
907 | ||
908 | static int store_aux(const char *key, const char *value, void *cb) | |
909 | { | |
910 | const char *ep; | |
911 | size_t section_len; | |
912 | ||
913 | switch (store.state) { | |
914 | case KEY_SEEN: | |
915 | if (matches(key, value)) { | |
916 | if (store.seen == 1 && store.multi_replace == 0) { | |
917 | warning("%s has multiple values", key); | |
918 | } else if (store.seen >= MAX_MATCHES) { | |
919 | error("too many matches for %s", key); | |
920 | return 1; | |
921 | } | |
922 | ||
923 | store.offset[store.seen] = ftell(config_file); | |
924 | store.seen++; | |
925 | } | |
926 | break; | |
927 | case SECTION_SEEN: | |
928 | /* | |
929 | * What we are looking for is in store.key (both | |
930 | * section and var), and its section part is baselen | |
931 | * long. We found key (again, both section and var). | |
932 | * We would want to know if this key is in the same | |
933 | * section as what we are looking for. We already | |
934 | * know we are in the same section as what should | |
935 | * hold store.key. | |
936 | */ | |
937 | ep = strrchr(key, '.'); | |
938 | section_len = ep - key; | |
939 | ||
940 | if ((section_len != store.baselen) || | |
941 | memcmp(key, store.key, section_len+1)) { | |
942 | store.state = SECTION_END_SEEN; | |
943 | break; | |
944 | } | |
945 | ||
946 | /* | |
947 | * Do not increment matches: this is no match, but we | |
948 | * just made sure we are in the desired section. | |
949 | */ | |
950 | store.offset[store.seen] = ftell(config_file); | |
951 | /* fallthru */ | |
952 | case SECTION_END_SEEN: | |
953 | case START: | |
954 | if (matches(key, value)) { | |
955 | store.offset[store.seen] = ftell(config_file); | |
956 | store.state = KEY_SEEN; | |
957 | store.seen++; | |
958 | } else { | |
959 | if (strrchr(key, '.') - key == store.baselen && | |
960 | !strncmp(key, store.key, store.baselen)) { | |
961 | store.state = SECTION_SEEN; | |
962 | store.offset[store.seen] = ftell(config_file); | |
963 | } | |
964 | } | |
965 | } | |
966 | return 0; | |
967 | } | |
968 | ||
969 | static int write_error(const char *filename) | |
970 | { | |
971 | error("failed to write new configuration file %s", filename); | |
972 | ||
973 | /* Same error code as "failed to rename". */ | |
974 | return 4; | |
975 | } | |
976 | ||
977 | static int store_write_section(int fd, const char *key) | |
978 | { | |
979 | const char *dot; | |
980 | int i, success; | |
981 | struct strbuf sb = STRBUF_INIT; | |
982 | ||
983 | dot = memchr(key, '.', store.baselen); | |
984 | if (dot) { | |
985 | strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key); | |
986 | for (i = dot - key + 1; i < store.baselen; i++) { | |
987 | if (key[i] == '"' || key[i] == '\\') | |
988 | strbuf_addch(&sb, '\\'); | |
989 | strbuf_addch(&sb, key[i]); | |
990 | } | |
991 | strbuf_addstr(&sb, "\"]\n"); | |
992 | } else { | |
993 | strbuf_addf(&sb, "[%.*s]\n", store.baselen, key); | |
994 | } | |
995 | ||
996 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; | |
997 | strbuf_release(&sb); | |
998 | ||
999 | return success; | |
1000 | } | |
1001 | ||
1002 | static int store_write_pair(int fd, const char *key, const char *value) | |
1003 | { | |
1004 | int i, success; | |
1005 | int length = strlen(key + store.baselen + 1); | |
1006 | const char *quote = ""; | |
1007 | struct strbuf sb = STRBUF_INIT; | |
1008 | ||
1009 | /* | |
1010 | * Check to see if the value needs to be surrounded with a dq pair. | |
1011 | * Note that problematic characters are always backslash-quoted; this | |
1012 | * check is about not losing leading or trailing SP and strings that | |
1013 | * follow beginning-of-comment characters (i.e. ';' and '#') by the | |
1014 | * configuration parser. | |
1015 | */ | |
1016 | if (value[0] == ' ') | |
1017 | quote = "\""; | |
1018 | for (i = 0; value[i]; i++) | |
1019 | if (value[i] == ';' || value[i] == '#') | |
1020 | quote = "\""; | |
1021 | if (i && value[i - 1] == ' ') | |
1022 | quote = "\""; | |
1023 | ||
1024 | strbuf_addf(&sb, "\t%.*s = %s", | |
1025 | length, key + store.baselen + 1, quote); | |
1026 | ||
1027 | for (i = 0; value[i]; i++) | |
1028 | switch (value[i]) { | |
1029 | case '\n': | |
1030 | strbuf_addstr(&sb, "\\n"); | |
1031 | break; | |
1032 | case '\t': | |
1033 | strbuf_addstr(&sb, "\\t"); | |
1034 | break; | |
1035 | case '"': | |
1036 | case '\\': | |
1037 | strbuf_addch(&sb, '\\'); | |
1038 | default: | |
1039 | strbuf_addch(&sb, value[i]); | |
1040 | break; | |
1041 | } | |
1042 | strbuf_addf(&sb, "%s\n", quote); | |
1043 | ||
1044 | success = write_in_full(fd, sb.buf, sb.len) == sb.len; | |
1045 | strbuf_release(&sb); | |
1046 | ||
1047 | return success; | |
1048 | } | |
1049 | ||
1050 | static ssize_t find_beginning_of_line(const char *contents, size_t size, | |
1051 | size_t offset_, int *found_bracket) | |
1052 | { | |
1053 | size_t equal_offset = size, bracket_offset = size; | |
1054 | ssize_t offset; | |
1055 | ||
1056 | contline: | |
1057 | for (offset = offset_-2; offset > 0 | |
1058 | && contents[offset] != '\n'; offset--) | |
1059 | switch (contents[offset]) { | |
1060 | case '=': equal_offset = offset; break; | |
1061 | case ']': bracket_offset = offset; break; | |
1062 | } | |
1063 | if (offset > 0 && contents[offset-1] == '\\') { | |
1064 | offset_ = offset; | |
1065 | goto contline; | |
1066 | } | |
1067 | if (bracket_offset < equal_offset) { | |
1068 | *found_bracket = 1; | |
1069 | offset = bracket_offset+1; | |
1070 | } else | |
1071 | offset++; | |
1072 | ||
1073 | return offset; | |
1074 | } | |
1075 | ||
1076 | int git_config_set(const char *key, const char *value) | |
1077 | { | |
1078 | return git_config_set_multivar(key, value, NULL, 0); | |
1079 | } | |
1080 | ||
1081 | /* | |
1082 | * Auxiliary function to sanity-check and split the key into the section | |
1083 | * identifier and variable name. | |
1084 | * | |
1085 | * Returns 0 on success, -1 when there is an invalid character in the key and | |
1086 | * -2 if there is no section name in the key. | |
1087 | * | |
1088 | * store_key - pointer to char* which will hold a copy of the key with | |
1089 | * lowercase section and variable name | |
1090 | * baselen - pointer to int which will hold the length of the | |
1091 | * section + subsection part, can be NULL | |
1092 | */ | |
1093 | int git_config_parse_key(const char *key, char **store_key, int *baselen_) | |
1094 | { | |
1095 | int i, dot, baselen; | |
1096 | const char *last_dot = strrchr(key, '.'); | |
1097 | ||
1098 | /* | |
1099 | * Since "key" actually contains the section name and the real | |
1100 | * key name separated by a dot, we have to know where the dot is. | |
1101 | */ | |
1102 | ||
1103 | if (last_dot == NULL || last_dot == key) { | |
1104 | error("key does not contain a section: %s", key); | |
1105 | return -CONFIG_NO_SECTION_OR_NAME; | |
1106 | } | |
1107 | ||
1108 | if (!last_dot[1]) { | |
1109 | error("key does not contain variable name: %s", key); | |
1110 | return -CONFIG_NO_SECTION_OR_NAME; | |
1111 | } | |
1112 | ||
1113 | baselen = last_dot - key; | |
1114 | if (baselen_) | |
1115 | *baselen_ = baselen; | |
1116 | ||
1117 | /* | |
1118 | * Validate the key and while at it, lower case it for matching. | |
1119 | */ | |
1120 | *store_key = xmalloc(strlen(key) + 1); | |
1121 | ||
1122 | dot = 0; | |
1123 | for (i = 0; key[i]; i++) { | |
1124 | unsigned char c = key[i]; | |
1125 | if (c == '.') | |
1126 | dot = 1; | |
1127 | /* Leave the extended basename untouched.. */ | |
1128 | if (!dot || i > baselen) { | |
1129 | if (!iskeychar(c) || | |
1130 | (i == baselen + 1 && !isalpha(c))) { | |
1131 | error("invalid key: %s", key); | |
1132 | goto out_free_ret_1; | |
1133 | } | |
1134 | c = tolower(c); | |
1135 | } else if (c == '\n') { | |
1136 | error("invalid key (newline): %s", key); | |
1137 | goto out_free_ret_1; | |
1138 | } | |
1139 | (*store_key)[i] = c; | |
1140 | } | |
1141 | (*store_key)[i] = 0; | |
1142 | ||
1143 | return 0; | |
1144 | ||
1145 | out_free_ret_1: | |
1146 | free(*store_key); | |
1147 | return -CONFIG_INVALID_KEY; | |
1148 | } | |
1149 | ||
1150 | /* | |
1151 | * If value==NULL, unset in (remove from) config, | |
1152 | * if value_regex!=NULL, disregard key/value pairs where value does not match. | |
1153 | * if multi_replace==0, nothing, or only one matching key/value is replaced, | |
1154 | * else all matching key/values (regardless how many) are removed, | |
1155 | * before the new pair is written. | |
1156 | * | |
1157 | * Returns 0 on success. | |
1158 | * | |
1159 | * This function does this: | |
1160 | * | |
1161 | * - it locks the config file by creating ".git/config.lock" | |
1162 | * | |
1163 | * - it then parses the config using store_aux() as validator to find | |
1164 | * the position on the key/value pair to replace. If it is to be unset, | |
1165 | * it must be found exactly once. | |
1166 | * | |
1167 | * - the config file is mmap()ed and the part before the match (if any) is | |
1168 | * written to the lock file, then the changed part and the rest. | |
1169 | * | |
1170 | * - the config file is removed and the lock file rename()d to it. | |
1171 | * | |
1172 | */ | |
1173 | int git_config_set_multivar(const char *key, const char *value, | |
1174 | const char *value_regex, int multi_replace) | |
1175 | { | |
1176 | int fd = -1, in_fd; | |
1177 | int ret; | |
1178 | char *config_filename; | |
1179 | struct lock_file *lock = NULL; | |
1180 | ||
1181 | if (config_exclusive_filename) | |
1182 | config_filename = xstrdup(config_exclusive_filename); | |
1183 | else | |
1184 | config_filename = git_pathdup("config"); | |
1185 | ||
1186 | /* parse-key returns negative; flip the sign to feed exit(3) */ | |
1187 | ret = 0 - git_config_parse_key(key, &store.key, &store.baselen); | |
1188 | if (ret) | |
1189 | goto out_free; | |
1190 | ||
1191 | store.multi_replace = multi_replace; | |
1192 | ||
1193 | ||
1194 | /* | |
1195 | * The lock serves a purpose in addition to locking: the new | |
1196 | * contents of .git/config will be written into it. | |
1197 | */ | |
1198 | lock = xcalloc(sizeof(struct lock_file), 1); | |
1199 | fd = hold_lock_file_for_update(lock, config_filename, 0); | |
1200 | if (fd < 0) { | |
1201 | error("could not lock config file %s: %s", config_filename, strerror(errno)); | |
1202 | free(store.key); | |
1203 | ret = CONFIG_NO_LOCK; | |
1204 | goto out_free; | |
1205 | } | |
1206 | ||
1207 | /* | |
1208 | * If .git/config does not exist yet, write a minimal version. | |
1209 | */ | |
1210 | in_fd = open(config_filename, O_RDONLY); | |
1211 | if ( in_fd < 0 ) { | |
1212 | free(store.key); | |
1213 | ||
1214 | if ( ENOENT != errno ) { | |
1215 | error("opening %s: %s", config_filename, | |
1216 | strerror(errno)); | |
1217 | ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */ | |
1218 | goto out_free; | |
1219 | } | |
1220 | /* if nothing to unset, error out */ | |
1221 | if (value == NULL) { | |
1222 | ret = CONFIG_NOTHING_SET; | |
1223 | goto out_free; | |
1224 | } | |
1225 | ||
1226 | store.key = (char *)key; | |
1227 | if (!store_write_section(fd, key) || | |
1228 | !store_write_pair(fd, key, value)) | |
1229 | goto write_err_out; | |
1230 | } else { | |
1231 | struct stat st; | |
1232 | char *contents; | |
1233 | size_t contents_sz, copy_begin, copy_end; | |
1234 | int i, new_line = 0; | |
1235 | ||
1236 | if (value_regex == NULL) | |
1237 | store.value_regex = NULL; | |
1238 | else { | |
1239 | if (value_regex[0] == '!') { | |
1240 | store.do_not_match = 1; | |
1241 | value_regex++; | |
1242 | } else | |
1243 | store.do_not_match = 0; | |
1244 | ||
1245 | store.value_regex = (regex_t*)xmalloc(sizeof(regex_t)); | |
1246 | if (regcomp(store.value_regex, value_regex, | |
1247 | REG_EXTENDED)) { | |
1248 | error("invalid pattern: %s", value_regex); | |
1249 | free(store.value_regex); | |
1250 | ret = CONFIG_INVALID_PATTERN; | |
1251 | goto out_free; | |
1252 | } | |
1253 | } | |
1254 | ||
1255 | store.offset[0] = 0; | |
1256 | store.state = START; | |
1257 | store.seen = 0; | |
1258 | ||
1259 | /* | |
1260 | * After this, store.offset will contain the *end* offset | |
1261 | * of the last match, or remain at 0 if no match was found. | |
1262 | * As a side effect, we make sure to transform only a valid | |
1263 | * existing config file. | |
1264 | */ | |
1265 | if (git_config_from_file(store_aux, config_filename, NULL)) { | |
1266 | error("invalid config file %s", config_filename); | |
1267 | free(store.key); | |
1268 | if (store.value_regex != NULL) { | |
1269 | regfree(store.value_regex); | |
1270 | free(store.value_regex); | |
1271 | } | |
1272 | ret = CONFIG_INVALID_FILE; | |
1273 | goto out_free; | |
1274 | } | |
1275 | ||
1276 | free(store.key); | |
1277 | if (store.value_regex != NULL) { | |
1278 | regfree(store.value_regex); | |
1279 | free(store.value_regex); | |
1280 | } | |
1281 | ||
1282 | /* if nothing to unset, or too many matches, error out */ | |
1283 | if ((store.seen == 0 && value == NULL) || | |
1284 | (store.seen > 1 && multi_replace == 0)) { | |
1285 | ret = CONFIG_NOTHING_SET; | |
1286 | goto out_free; | |
1287 | } | |
1288 | ||
1289 | fstat(in_fd, &st); | |
1290 | contents_sz = xsize_t(st.st_size); | |
1291 | contents = xmmap(NULL, contents_sz, PROT_READ, | |
1292 | MAP_PRIVATE, in_fd, 0); | |
1293 | close(in_fd); | |
1294 | ||
1295 | if (store.seen == 0) | |
1296 | store.seen = 1; | |
1297 | ||
1298 | for (i = 0, copy_begin = 0; i < store.seen; i++) { | |
1299 | if (store.offset[i] == 0) { | |
1300 | store.offset[i] = copy_end = contents_sz; | |
1301 | } else if (store.state != KEY_SEEN) { | |
1302 | copy_end = store.offset[i]; | |
1303 | } else | |
1304 | copy_end = find_beginning_of_line( | |
1305 | contents, contents_sz, | |
1306 | store.offset[i]-2, &new_line); | |
1307 | ||
1308 | if (copy_end > 0 && contents[copy_end-1] != '\n') | |
1309 | new_line = 1; | |
1310 | ||
1311 | /* write the first part of the config */ | |
1312 | if (copy_end > copy_begin) { | |
1313 | if (write_in_full(fd, contents + copy_begin, | |
1314 | copy_end - copy_begin) < | |
1315 | copy_end - copy_begin) | |
1316 | goto write_err_out; | |
1317 | if (new_line && | |
1318 | write_str_in_full(fd, "\n") != 1) | |
1319 | goto write_err_out; | |
1320 | } | |
1321 | copy_begin = store.offset[i]; | |
1322 | } | |
1323 | ||
1324 | /* write the pair (value == NULL means unset) */ | |
1325 | if (value != NULL) { | |
1326 | if (store.state == START) { | |
1327 | if (!store_write_section(fd, key)) | |
1328 | goto write_err_out; | |
1329 | } | |
1330 | if (!store_write_pair(fd, key, value)) | |
1331 | goto write_err_out; | |
1332 | } | |
1333 | ||
1334 | /* write the rest of the config */ | |
1335 | if (copy_begin < contents_sz) | |
1336 | if (write_in_full(fd, contents + copy_begin, | |
1337 | contents_sz - copy_begin) < | |
1338 | contents_sz - copy_begin) | |
1339 | goto write_err_out; | |
1340 | ||
1341 | munmap(contents, contents_sz); | |
1342 | } | |
1343 | ||
1344 | if (commit_lock_file(lock) < 0) { | |
1345 | error("could not commit config file %s", config_filename); | |
1346 | ret = CONFIG_NO_WRITE; | |
1347 | goto out_free; | |
1348 | } | |
1349 | ||
1350 | /* | |
1351 | * lock is committed, so don't try to roll it back below. | |
1352 | * NOTE: Since lockfile.c keeps a linked list of all created | |
1353 | * lock_file structures, it isn't safe to free(lock). It's | |
1354 | * better to just leave it hanging around. | |
1355 | */ | |
1356 | lock = NULL; | |
1357 | ret = 0; | |
1358 | ||
1359 | out_free: | |
1360 | if (lock) | |
1361 | rollback_lock_file(lock); | |
1362 | free(config_filename); | |
1363 | return ret; | |
1364 | ||
1365 | write_err_out: | |
1366 | ret = write_error(lock->filename); | |
1367 | goto out_free; | |
1368 | ||
1369 | } | |
1370 | ||
1371 | static int section_name_match (const char *buf, const char *name) | |
1372 | { | |
1373 | int i = 0, j = 0, dot = 0; | |
1374 | if (buf[i] != '[') | |
1375 | return 0; | |
1376 | for (i = 1; buf[i] && buf[i] != ']'; i++) { | |
1377 | if (!dot && isspace(buf[i])) { | |
1378 | dot = 1; | |
1379 | if (name[j++] != '.') | |
1380 | break; | |
1381 | for (i++; isspace(buf[i]); i++) | |
1382 | ; /* do nothing */ | |
1383 | if (buf[i] != '"') | |
1384 | break; | |
1385 | continue; | |
1386 | } | |
1387 | if (buf[i] == '\\' && dot) | |
1388 | i++; | |
1389 | else if (buf[i] == '"' && dot) { | |
1390 | for (i++; isspace(buf[i]); i++) | |
1391 | ; /* do_nothing */ | |
1392 | break; | |
1393 | } | |
1394 | if (buf[i] != name[j++]) | |
1395 | break; | |
1396 | } | |
1397 | if (buf[i] == ']' && name[j] == 0) { | |
1398 | /* | |
1399 | * We match, now just find the right length offset by | |
1400 | * gobbling up any whitespace after it, as well | |
1401 | */ | |
1402 | i++; | |
1403 | for (; buf[i] && isspace(buf[i]); i++) | |
1404 | ; /* do nothing */ | |
1405 | return i; | |
1406 | } | |
1407 | return 0; | |
1408 | } | |
1409 | ||
1410 | /* if new_name == NULL, the section is removed instead */ | |
1411 | int git_config_rename_section(const char *old_name, const char *new_name) | |
1412 | { | |
1413 | int ret = 0, remove = 0; | |
1414 | char *config_filename; | |
1415 | struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1); | |
1416 | int out_fd; | |
1417 | char buf[1024]; | |
1418 | ||
1419 | if (config_exclusive_filename) | |
1420 | config_filename = xstrdup(config_exclusive_filename); | |
1421 | else | |
1422 | config_filename = git_pathdup("config"); | |
1423 | out_fd = hold_lock_file_for_update(lock, config_filename, 0); | |
1424 | if (out_fd < 0) { | |
1425 | ret = error("could not lock config file %s", config_filename); | |
1426 | goto out; | |
1427 | } | |
1428 | ||
1429 | if (!(config_file = fopen(config_filename, "rb"))) { | |
1430 | /* no config file means nothing to rename, no error */ | |
1431 | goto unlock_and_out; | |
1432 | } | |
1433 | ||
1434 | while (fgets(buf, sizeof(buf), config_file)) { | |
1435 | int i; | |
1436 | int length; | |
1437 | char *output = buf; | |
1438 | for (i = 0; buf[i] && isspace(buf[i]); i++) | |
1439 | ; /* do nothing */ | |
1440 | if (buf[i] == '[') { | |
1441 | /* it's a section */ | |
1442 | int offset = section_name_match(&buf[i], old_name); | |
1443 | if (offset > 0) { | |
1444 | ret++; | |
1445 | if (new_name == NULL) { | |
1446 | remove = 1; | |
1447 | continue; | |
1448 | } | |
1449 | store.baselen = strlen(new_name); | |
1450 | if (!store_write_section(out_fd, new_name)) { | |
1451 | ret = write_error(lock->filename); | |
1452 | goto out; | |
1453 | } | |
1454 | /* | |
1455 | * We wrote out the new section, with | |
1456 | * a newline, now skip the old | |
1457 | * section's length | |
1458 | */ | |
1459 | output += offset + i; | |
1460 | if (strlen(output) > 0) { | |
1461 | /* | |
1462 | * More content means there's | |
1463 | * a declaration to put on the | |
1464 | * next line; indent with a | |
1465 | * tab | |
1466 | */ | |
1467 | output -= 1; | |
1468 | output[0] = '\t'; | |
1469 | } | |
1470 | } | |
1471 | remove = 0; | |
1472 | } | |
1473 | if (remove) | |
1474 | continue; | |
1475 | length = strlen(output); | |
1476 | if (write_in_full(out_fd, output, length) != length) { | |
1477 | ret = write_error(lock->filename); | |
1478 | goto out; | |
1479 | } | |
1480 | } | |
1481 | fclose(config_file); | |
1482 | unlock_and_out: | |
1483 | if (commit_lock_file(lock) < 0) | |
1484 | ret = error("could not commit config file %s", config_filename); | |
1485 | out: | |
1486 | free(config_filename); | |
1487 | return ret; | |
1488 | } | |
1489 | ||
1490 | /* | |
1491 | * Call this to report error for your variable that should not | |
1492 | * get a boolean value (i.e. "[my] var" means "true"). | |
1493 | */ | |
1494 | int config_error_nonbool(const char *var) | |
1495 | { | |
1496 | return error("Missing value for '%s'", var); | |
1497 | } |