?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
travis-ci: enable Git SVN tests t91xx on Linux
[git.git] / config.c
blob096fe03166650f2e1e974bb1d2abac8a93ef33d6
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 "lockfile.h"
10 #include "exec_cmd.h"
11 #include "strbuf.h"
12 #include "quote.h"
13 #include "hashmap.h"
14 #include "string-list.h"
15 #include "utf8.h"
16
17 struct config_source {
18 struct config_source *prev;
19 union {
20 FILE *file;
21 struct config_buf {
22 const char *buf;
23 size_t len;
24 size_t pos;
25 } buf;
26 } u;
27 const char *origin_type;
28 const char *name;
29 const char *path;
30 int die_on_error;
31 int linenr;
32 int eof;
33 struct strbuf value;
34 struct strbuf var;
35
36 int (*do_fgetc)(struct config_source *c);
37 int (*do_ungetc)(int c, struct config_source *conf);
38 long (*do_ftell)(struct config_source *c);
39 };
40
41 static struct config_source *cf;
42
43 static int zlib_compression_seen;
44
45 /*
46 * Default config_set that contains key-value pairs from the usual set of config
47 * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
48 * config file and the global /etc/gitconfig)
49 */
50 static struct config_set the_config_set;
51
52 static int config_file_fgetc(struct config_source *conf)
53 {
54 return getc_unlocked(conf->u.file);
55 }
56
57 static int config_file_ungetc(int c, struct config_source *conf)
58 {
59 return ungetc(c, conf->u.file);
60 }
61
62 static long config_file_ftell(struct config_source *conf)
63 {
64 return ftell(conf->u.file);
65 }
66
67
68 static int config_buf_fgetc(struct config_source *conf)
69 {
70 if (conf->u.buf.pos < conf->u.buf.len)
71 return conf->u.buf.buf[conf->u.buf.pos++];
72
73 return EOF;
74 }
75
76 static int config_buf_ungetc(int c, struct config_source *conf)
77 {
78 if (conf->u.buf.pos > 0) {
79 conf->u.buf.pos--;
80 if (conf->u.buf.buf[conf->u.buf.pos] != c)
81 die("BUG: config_buf can only ungetc the same character");
82 return c;
83 }
84
85 return EOF;
86 }
87
88 static long config_buf_ftell(struct config_source *conf)
89 {
90 return conf->u.buf.pos;
91 }
92
93 #define MAX_INCLUDE_DEPTH 10
94 static const char include_depth_advice[] =
95 "exceeded maximum include depth (%d) while including\n"
96 " %s\n"
97 "from\n"
98 " %s\n"
99 "Do you have circular includes?";
100 static int handle_path_include(const char *path, struct config_include_data *inc)
101 {
102 int ret = 0;
103 struct strbuf buf = STRBUF_INIT;
104 char *expanded;
105
106 if (!path)
107 return config_error_nonbool("include.path");
108
109 expanded = expand_user_path(path);
110 if (!expanded)
111 return error("could not expand include path '%s'", path);
112 path = expanded;
113
114 /*
115 * Use an absolute path as-is, but interpret relative paths
116 * based on the including config file.
117 */
118 if (!is_absolute_path(path)) {
119 char *slash;
120
121 if (!cf || !cf->path)
122 return error("relative config includes must come from files");
123
124 slash = find_last_dir_sep(cf->path);
125 if (slash)
126 strbuf_add(&buf, cf->path, slash - cf->path + 1);
127 strbuf_addstr(&buf, path);
128 path = buf.buf;
129 }
130
131 if (!access_or_die(path, R_OK, 0)) {
132 if (++inc->depth > MAX_INCLUDE_DEPTH)
133 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
134 cf && cf->name ? cf->name : "the command line");
135 ret = git_config_from_file(git_config_include, path, inc);
136 inc->depth--;
137 }
138 strbuf_release(&buf);
139 free(expanded);
140 return ret;
141 }
142
143 int git_config_include(const char *var, const char *value, void *data)
144 {
145 struct config_include_data *inc = data;
146 int ret;
147
148 /*
149 * Pass along all values, including "include" directives; this makes it
150 * possible to query information on the includes themselves.
151 */
152 ret = inc->fn(var, value, inc->data);
153 if (ret < 0)
154 return ret;
155
156 if (!strcmp(var, "include.path"))
157 ret = handle_path_include(value, inc);
158 return ret;
159 }
160
161 void git_config_push_parameter(const char *text)
162 {
163 struct strbuf env = STRBUF_INIT;
164 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
165 if (old && *old) {
166 strbuf_addstr(&env, old);
167 strbuf_addch(&env, ' ');
168 }
169 sq_quote_buf(&env, text);
170 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
171 strbuf_release(&env);
172 }
173
174 int git_config_parse_parameter(const char *text,
175 config_fn_t fn, void *data)
176 {
177 const char *value;
178 struct strbuf **pair;
179
180 pair = strbuf_split_str(text, '=', 2);
181 if (!pair[0])
182 return error("bogus config parameter: %s", text);
183
184 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
185 strbuf_setlen(pair[0], pair[0]->len - 1);
186 value = pair[1] ? pair[1]->buf : "";
187 } else {
188 value = NULL;
189 }
190
191 strbuf_trim(pair[0]);
192 if (!pair[0]->len) {
193 strbuf_list_free(pair);
194 return error("bogus config parameter: %s", text);
195 }
196 strbuf_tolower(pair[0]);
197 if (fn(pair[0]->buf, value, data) < 0) {
198 strbuf_list_free(pair);
199 return -1;
200 }
201 strbuf_list_free(pair);
202 return 0;
203 }
204
205 int git_config_from_parameters(config_fn_t fn, void *data)
206 {
207 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
208 char *envw;
209 const char **argv = NULL;
210 int nr = 0, alloc = 0;
211 int i;
212
213 if (!env)
214 return 0;
215 /* sq_dequote will write over it */
216 envw = xstrdup(env);
217
218 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
219 free(envw);
220 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
221 }
222
223 for (i = 0; i < nr; i++) {
224 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
225 free(argv);
226 free(envw);
227 return -1;
228 }
229 }
230
231 free(argv);
232 free(envw);
233 return nr > 0;
234 }
235
236 static int get_next_char(void)
237 {
238 int c = cf->do_fgetc(cf);
239
240 if (c == '\r') {
241 /* DOS like systems */
242 c = cf->do_fgetc(cf);
243 if (c != '\n') {
244 if (c != EOF)
245 cf->do_ungetc(c, cf);
246 c = '\r';
247 }
248 }
249 if (c == '\n')
250 cf->linenr++;
251 if (c == EOF) {
252 cf->eof = 1;
253 cf->linenr++;
254 c = '\n';
255 }
256 return c;
257 }
258
259 static char *parse_value(void)
260 {
261 int quote = 0, comment = 0, space = 0;
262
263 strbuf_reset(&cf->value);
264 for (;;) {
265 int c = get_next_char();
266 if (c == '\n') {
267 if (quote) {
268 cf->linenr--;
269 return NULL;
270 }
271 return cf->value.buf;
272 }
273 if (comment)
274 continue;
275 if (isspace(c) && !quote) {
276 if (cf->value.len)
277 space++;
278 continue;
279 }
280 if (!quote) {
281 if (c == ';' || c == '#') {
282 comment = 1;
283 continue;
284 }
285 }
286 for (; space; space--)
287 strbuf_addch(&cf->value, ' ');
288 if (c == '\\') {
289 c = get_next_char();
290 switch (c) {
291 case '\n':
292 continue;
293 case 't':
294 c = '\t';
295 break;
296 case 'b':
297 c = '\b';
298 break;
299 case 'n':
300 c = '\n';
301 break;
302 /* Some characters escape as themselves */
303 case '\\': case '"':
304 break;
305 /* Reject unknown escape sequences */
306 default:
307 return NULL;
308 }
309 strbuf_addch(&cf->value, c);
310 continue;
311 }
312 if (c == '"') {
313 quote = 1-quote;
314 continue;
315 }
316 strbuf_addch(&cf->value, c);
317 }
318 }
319
320 static inline int iskeychar(int c)
321 {
322 return isalnum(c) || c == '-';
323 }
324
325 static int get_value(config_fn_t fn, void *data, struct strbuf *name)
326 {
327 int c;
328 char *value;
329 int ret;
330
331 /* Get the full name */
332 for (;;) {
333 c = get_next_char();
334 if (cf->eof)
335 break;
336 if (!iskeychar(c))
337 break;
338 strbuf_addch(name, tolower(c));
339 }
340
341 while (c == ' ' || c == '\t')
342 c = get_next_char();
343
344 value = NULL;
345 if (c != '\n') {
346 if (c != '=')
347 return -1;
348 value = parse_value();
349 if (!value)
350 return -1;
351 }
352 /*
353 * We already consumed the \n, but we need linenr to point to
354 * the line we just parsed during the call to fn to get
355 * accurate line number in error messages.
356 */
357 cf->linenr--;
358 ret = fn(name->buf, value, data);
359 cf->linenr++;
360 return ret;
361 }
362
363 static int get_extended_base_var(struct strbuf *name, int c)
364 {
365 do {
366 if (c == '\n')
367 goto error_incomplete_line;
368 c = get_next_char();
369 } while (isspace(c));
370
371 /* We require the format to be '[base "extension"]' */
372 if (c != '"')
373 return -1;
374 strbuf_addch(name, '.');
375
376 for (;;) {
377 int c = get_next_char();
378 if (c == '\n')
379 goto error_incomplete_line;
380 if (c == '"')
381 break;
382 if (c == '\\') {
383 c = get_next_char();
384 if (c == '\n')
385 goto error_incomplete_line;
386 }
387 strbuf_addch(name, c);
388 }
389
390 /* Final ']' */
391 if (get_next_char() != ']')
392 return -1;
393 return 0;
394 error_incomplete_line:
395 cf->linenr--;
396 return -1;
397 }
398
399 static int get_base_var(struct strbuf *name)
400 {
401 for (;;) {
402 int c = get_next_char();
403 if (cf->eof)
404 return -1;
405 if (c == ']')
406 return 0;
407 if (isspace(c))
408 return get_extended_base_var(name, c);
409 if (!iskeychar(c) && c != '.')
410 return -1;
411 strbuf_addch(name, tolower(c));
412 }
413 }
414
415 static int git_parse_source(config_fn_t fn, void *data)
416 {
417 int comment = 0;
418 int baselen = 0;
419 struct strbuf *var = &cf->var;
420
421 /* U+FEFF Byte Order Mark in UTF8 */
422 const char *bomptr = utf8_bom;
423
424 for (;;) {
425 int c = get_next_char();
426 if (bomptr && *bomptr) {
427 /* We are at the file beginning; skip UTF8-encoded BOM
428 * if present. Sane editors won't put this in on their
429 * own, but e.g. Windows Notepad will do it happily. */
430 if (c == (*bomptr & 0377)) {
431 bomptr++;
432 continue;
433 } else {
434 /* Do not tolerate partial BOM. */
435 if (bomptr != utf8_bom)
436 break;
437 /* No BOM at file beginning. Cool. */
438 bomptr = NULL;
439 }
440 }
441 if (c == '\n') {
442 if (cf->eof)
443 return 0;
444 comment = 0;
445 continue;
446 }
447 if (comment || isspace(c))
448 continue;
449 if (c == '#' || c == ';') {
450 comment = 1;
451 continue;
452 }
453 if (c == '[') {
454 /* Reset prior to determining a new stem */
455 strbuf_reset(var);
456 if (get_base_var(var) < 0 || var->len < 1)
457 break;
458 strbuf_addch(var, '.');
459 baselen = var->len;
460 continue;
461 }
462 if (!isalpha(c))
463 break;
464 /*
465 * Truncate the var name back to the section header
466 * stem prior to grabbing the suffix part of the name
467 * and the value.
468 */
469 strbuf_setlen(var, baselen);
470 strbuf_addch(var, tolower(c));
471 if (get_value(fn, data, var) < 0)
472 break;
473 }
474 if (cf->die_on_error)
475 die(_("bad config line %d in %s %s"), cf->linenr, cf->origin_type, cf->name);
476 else
477 return error(_("bad config line %d in %s %s"), cf->linenr, cf->origin_type, cf->name);
478 }
479
480 static int parse_unit_factor(const char *end, uintmax_t *val)
481 {
482 if (!*end)
483 return 1;
484 else if (!strcasecmp(end, "k")) {
485 *val *= 1024;
486 return 1;
487 }
488 else if (!strcasecmp(end, "m")) {
489 *val *= 1024 * 1024;
490 return 1;
491 }
492 else if (!strcasecmp(end, "g")) {
493 *val *= 1024 * 1024 * 1024;
494 return 1;
495 }
496 return 0;
497 }
498
499 static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
500 {
501 if (value && *value) {
502 char *end;
503 intmax_t val;
504 uintmax_t uval;
505 uintmax_t factor = 1;
506
507 errno = 0;
508 val = strtoimax(value, &end, 0);
509 if (errno == ERANGE)
510 return 0;
511 if (!parse_unit_factor(end, &factor)) {
512 errno = EINVAL;
513 return 0;
514 }
515 uval = labs(val);
516 uval *= factor;
517 if (uval > max || labs(val) > uval) {
518 errno = ERANGE;
519 return 0;
520 }
521 val *= factor;
522 *ret = val;
523 return 1;
524 }
525 errno = EINVAL;
526 return 0;
527 }
528
529 static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
530 {
531 if (value && *value) {
532 char *end;
533 uintmax_t val;
534 uintmax_t oldval;
535
536 errno = 0;
537 val = strtoumax(value, &end, 0);
538 if (errno == ERANGE)
539 return 0;
540 oldval = val;
541 if (!parse_unit_factor(end, &val)) {
542 errno = EINVAL;
543 return 0;
544 }
545 if (val > max || oldval > val) {
546 errno = ERANGE;
547 return 0;
548 }
549 *ret = val;
550 return 1;
551 }
552 errno = EINVAL;
553 return 0;
554 }
555
556 static int git_parse_int(const char *value, int *ret)
557 {
558 intmax_t tmp;
559 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
560 return 0;
561 *ret = tmp;
562 return 1;
563 }
564
565 static int git_parse_int64(const char *value, int64_t *ret)
566 {
567 intmax_t tmp;
568 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
569 return 0;
570 *ret = tmp;
571 return 1;
572 }
573
574 int git_parse_ulong(const char *value, unsigned long *ret)
575 {
576 uintmax_t tmp;
577 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
578 return 0;
579 *ret = tmp;
580 return 1;
581 }
582
583 NORETURN
584 static void die_bad_number(const char *name, const char *value)
585 {
586 const char *reason = errno == ERANGE ?
587 "out of range" :
588 "invalid unit";
589 if (!value)
590 value = "";
591
592 if (cf && cf->origin_type && cf->name)
593 die(_("bad numeric config value '%s' for '%s' in %s %s: %s"),
594 value, name, cf->origin_type, cf->name, reason);
595 die(_("bad numeric config value '%s' for '%s': %s"), value, name, reason);
596 }
597
598 int git_config_int(const char *name, const char *value)
599 {
600 int ret;
601 if (!git_parse_int(value, &ret))
602 die_bad_number(name, value);
603 return ret;
604 }
605
606 int64_t git_config_int64(const char *name, const char *value)
607 {
608 int64_t ret;
609 if (!git_parse_int64(value, &ret))
610 die_bad_number(name, value);
611 return ret;
612 }
613
614 unsigned long git_config_ulong(const char *name, const char *value)
615 {
616 unsigned long ret;
617 if (!git_parse_ulong(value, &ret))
618 die_bad_number(name, value);
619 return ret;
620 }
621
622 int git_parse_maybe_bool(const char *value)
623 {
624 if (!value)
625 return 1;
626 if (!*value)
627 return 0;
628 if (!strcasecmp(value, "true")
629 || !strcasecmp(value, "yes")
630 || !strcasecmp(value, "on"))
631 return 1;
632 if (!strcasecmp(value, "false")
633 || !strcasecmp(value, "no")
634 || !strcasecmp(value, "off"))
635 return 0;
636 return -1;
637 }
638
639 int git_config_maybe_bool(const char *name, const char *value)
640 {
641 int v = git_parse_maybe_bool(value);
642 if (0 <= v)
643 return v;
644 if (git_parse_int(value, &v))
645 return !!v;
646 return -1;
647 }
648
649 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
650 {
651 int v = git_parse_maybe_bool(value);
652 if (0 <= v) {
653 *is_bool = 1;
654 return v;
655 }
656 *is_bool = 0;
657 return git_config_int(name, value);
658 }
659
660 int git_config_bool(const char *name, const char *value)
661 {
662 int discard;
663 return !!git_config_bool_or_int(name, value, &discard);
664 }
665
666 int git_config_string(const char **dest, const char *var, const char *value)
667 {
668 if (!value)
669 return config_error_nonbool(var);
670 *dest = xstrdup(value);
671 return 0;
672 }
673
674 int git_config_pathname(const char **dest, const char *var, const char *value)
675 {
676 if (!value)
677 return config_error_nonbool(var);
678 *dest = expand_user_path(value);
679 if (!*dest)
680 die(_("failed to expand user dir in: '%s'"), value);
681 return 0;
682 }
683
684 static int git_default_core_config(const char *var, const char *value)
685 {
686 /* This needs a better name */
687 if (!strcmp(var, "core.filemode")) {
688 trust_executable_bit = git_config_bool(var, value);
689 return 0;
690 }
691 if (!strcmp(var, "core.trustctime")) {
692 trust_ctime = git_config_bool(var, value);
693 return 0;
694 }
695 if (!strcmp(var, "core.checkstat")) {
696 if (!strcasecmp(value, "default"))
697 check_stat = 1;
698 else if (!strcasecmp(value, "minimal"))
699 check_stat = 0;
700 }
701
702 if (!strcmp(var, "core.quotepath")) {
703 quote_path_fully = git_config_bool(var, value);
704 return 0;
705 }
706
707 if (!strcmp(var, "core.symlinks")) {
708 has_symlinks = git_config_bool(var, value);
709 return 0;
710 }
711
712 if (!strcmp(var, "core.ignorecase")) {
713 ignore_case = git_config_bool(var, value);
714 return 0;
715 }
716
717 if (!strcmp(var, "core.attributesfile"))
718 return git_config_pathname(&git_attributes_file, var, value);
719
720 if (!strcmp(var, "core.hookspath"))
721 return git_config_pathname(&git_hooks_path, var, value);
722
723 if (!strcmp(var, "core.bare")) {
724 is_bare_repository_cfg = git_config_bool(var, value);
725 return 0;
726 }
727
728 if (!strcmp(var, "core.ignorestat")) {
729 assume_unchanged = git_config_bool(var, value);
730 return 0;
731 }
732
733 if (!strcmp(var, "core.prefersymlinkrefs")) {
734 prefer_symlink_refs = git_config_bool(var, value);
735 return 0;
736 }
737
738 if (!strcmp(var, "core.logallrefupdates")) {
739 log_all_ref_updates = git_config_bool(var, value);
740 return 0;
741 }
742
743 if (!strcmp(var, "core.warnambiguousrefs")) {
744 warn_ambiguous_refs = git_config_bool(var, value);
745 return 0;
746 }
747
748 if (!strcmp(var, "core.abbrev")) {
749 int abbrev = git_config_int(var, value);
750 if (abbrev < minimum_abbrev || abbrev > 40)
751 return -1;
752 default_abbrev = abbrev;
753 return 0;
754 }
755
756 if (!strcmp(var, "core.loosecompression")) {
757 int level = git_config_int(var, value);
758 if (level == -1)
759 level = Z_DEFAULT_COMPRESSION;
760 else if (level < 0 || level > Z_BEST_COMPRESSION)
761 die(_("bad zlib compression level %d"), level);
762 zlib_compression_level = level;
763 zlib_compression_seen = 1;
764 return 0;
765 }
766
767 if (!strcmp(var, "core.compression")) {
768 int level = git_config_int(var, value);
769 if (level == -1)
770 level = Z_DEFAULT_COMPRESSION;
771 else if (level < 0 || level > Z_BEST_COMPRESSION)
772 die(_("bad zlib compression level %d"), level);
773 core_compression_level = level;
774 core_compression_seen = 1;
775 if (!zlib_compression_seen)
776 zlib_compression_level = level;
777 return 0;
778 }
779
780 if (!strcmp(var, "core.packedgitwindowsize")) {
781 int pgsz_x2 = getpagesize() * 2;
782 packed_git_window_size = git_config_ulong(var, value);
783
784 /* This value must be multiple of (pagesize * 2) */
785 packed_git_window_size /= pgsz_x2;
786 if (packed_git_window_size < 1)
787 packed_git_window_size = 1;
788 packed_git_window_size *= pgsz_x2;
789 return 0;
790 }
791
792 if (!strcmp(var, "core.bigfilethreshold")) {
793 big_file_threshold = git_config_ulong(var, value);
794 return 0;
795 }
796
797 if (!strcmp(var, "core.packedgitlimit")) {
798 packed_git_limit = git_config_ulong(var, value);
799 return 0;
800 }
801
802 if (!strcmp(var, "core.deltabasecachelimit")) {
803 delta_base_cache_limit = git_config_ulong(var, value);
804 return 0;
805 }
806
807 if (!strcmp(var, "core.autocrlf")) {
808 if (value && !strcasecmp(value, "input")) {
809 if (core_eol == EOL_CRLF)
810 return error("core.autocrlf=input conflicts with core.eol=crlf");
811 auto_crlf = AUTO_CRLF_INPUT;
812 return 0;
813 }
814 auto_crlf = git_config_bool(var, value);
815 return 0;
816 }
817
818 if (!strcmp(var, "core.safecrlf")) {
819 if (value && !strcasecmp(value, "warn")) {
820 safe_crlf = SAFE_CRLF_WARN;
821 return 0;
822 }
823 safe_crlf = git_config_bool(var, value);
824 return 0;
825 }
826
827 if (!strcmp(var, "core.eol")) {
828 if (value && !strcasecmp(value, "lf"))
829 core_eol = EOL_LF;
830 else if (value && !strcasecmp(value, "crlf"))
831 core_eol = EOL_CRLF;
832 else if (value && !strcasecmp(value, "native"))
833 core_eol = EOL_NATIVE;
834 else
835 core_eol = EOL_UNSET;
836 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
837 return error("core.autocrlf=input conflicts with core.eol=crlf");
838 return 0;
839 }
840
841 if (!strcmp(var, "core.notesref")) {
842 notes_ref_name = xstrdup(value);
843 return 0;
844 }
845
846 if (!strcmp(var, "core.pager"))
847 return git_config_string(&pager_program, var, value);
848
849 if (!strcmp(var, "core.editor"))
850 return git_config_string(&editor_program, var, value);
851
852 if (!strcmp(var, "core.commentchar")) {
853 if (!value)
854 return config_error_nonbool(var);
855 else if (!strcasecmp(value, "auto"))
856 auto_comment_line_char = 1;
857 else if (value[0] && !value[1]) {
858 comment_line_char = value[0];
859 auto_comment_line_char = 0;
860 } else
861 return error("core.commentChar should only be one character");
862 return 0;
863 }
864
865 if (!strcmp(var, "core.askpass"))
866 return git_config_string(&askpass_program, var, value);
867
868 if (!strcmp(var, "core.excludesfile"))
869 return git_config_pathname(&excludes_file, var, value);
870
871 if (!strcmp(var, "core.whitespace")) {
872 if (!value)
873 return config_error_nonbool(var);
874 whitespace_rule_cfg = parse_whitespace_rule(value);
875 return 0;
876 }
877
878 if (!strcmp(var, "core.fsyncobjectfiles")) {
879 fsync_object_files = git_config_bool(var, value);
880 return 0;
881 }
882
883 if (!strcmp(var, "core.preloadindex")) {
884 core_preload_index = git_config_bool(var, value);
885 return 0;
886 }
887
888 if (!strcmp(var, "core.createobject")) {
889 if (!strcmp(value, "rename"))
890 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
891 else if (!strcmp(value, "link"))
892 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
893 else
894 die(_("invalid mode for object creation: %s"), value);
895 return 0;
896 }
897
898 if (!strcmp(var, "core.sparsecheckout")) {
899 core_apply_sparse_checkout = git_config_bool(var, value);
900 return 0;
901 }
902
903 if (!strcmp(var, "core.precomposeunicode")) {
904 precomposed_unicode = git_config_bool(var, value);
905 return 0;
906 }
907
908 if (!strcmp(var, "core.protecthfs")) {
909 protect_hfs = git_config_bool(var, value);
910 return 0;
911 }
912
913 if (!strcmp(var, "core.protectntfs")) {
914 protect_ntfs = git_config_bool(var, value);
915 return 0;
916 }
917
918 if (!strcmp(var, "core.hidedotfiles")) {
919 if (value && !strcasecmp(value, "dotgitonly"))
920 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
921 else
922 hide_dotfiles = git_config_bool(var, value);
923 return 0;
924 }
925
926 /* Add other config variables here and to Documentation/config.txt. */
927 return 0;
928 }
929
930 static int git_default_i18n_config(const char *var, const char *value)
931 {
932 if (!strcmp(var, "i18n.commitencoding"))
933 return git_config_string(&git_commit_encoding, var, value);
934
935 if (!strcmp(var, "i18n.logoutputencoding"))
936 return git_config_string(&git_log_output_encoding, var, value);
937
938 /* Add other config variables here and to Documentation/config.txt. */
939 return 0;
940 }
941
942 static int git_default_branch_config(const char *var, const char *value)
943 {
944 if (!strcmp(var, "branch.autosetupmerge")) {
945 if (value && !strcasecmp(value, "always")) {
946 git_branch_track = BRANCH_TRACK_ALWAYS;
947 return 0;
948 }
949 git_branch_track = git_config_bool(var, value);
950 return 0;
951 }
952 if (!strcmp(var, "branch.autosetuprebase")) {
953 if (!value)
954 return config_error_nonbool(var);
955 else if (!strcmp(value, "never"))
956 autorebase = AUTOREBASE_NEVER;
957 else if (!strcmp(value, "local"))
958 autorebase = AUTOREBASE_LOCAL;
959 else if (!strcmp(value, "remote"))
960 autorebase = AUTOREBASE_REMOTE;
961 else if (!strcmp(value, "always"))
962 autorebase = AUTOREBASE_ALWAYS;
963 else
964 return error("malformed value for %s", var);
965 return 0;
966 }
967
968 /* Add other config variables here and to Documentation/config.txt. */
969 return 0;
970 }
971
972 static int git_default_push_config(const char *var, const char *value)
973 {
974 if (!strcmp(var, "push.default")) {
975 if (!value)
976 return config_error_nonbool(var);
977 else if (!strcmp(value, "nothing"))
978 push_default = PUSH_DEFAULT_NOTHING;
979 else if (!strcmp(value, "matching"))
980 push_default = PUSH_DEFAULT_MATCHING;
981 else if (!strcmp(value, "simple"))
982 push_default = PUSH_DEFAULT_SIMPLE;
983 else if (!strcmp(value, "upstream"))
984 push_default = PUSH_DEFAULT_UPSTREAM;
985 else if (!strcmp(value, "tracking")) /* deprecated */
986 push_default = PUSH_DEFAULT_UPSTREAM;
987 else if (!strcmp(value, "current"))
988 push_default = PUSH_DEFAULT_CURRENT;
989 else {
990 error("malformed value for %s: %s", var, value);
991 return error("Must be one of nothing, matching, simple, "
992 "upstream or current.");
993 }
994 return 0;
995 }
996
997 /* Add other config variables here and to Documentation/config.txt. */
998 return 0;
999 }
1000
1001 static int git_default_mailmap_config(const char *var, const char *value)
1002 {
1003 if (!strcmp(var, "mailmap.file"))
1004 return git_config_pathname(&git_mailmap_file, var, value);
1005 if (!strcmp(var, "mailmap.blob"))
1006 return git_config_string(&git_mailmap_blob, var, value);
1007
1008 /* Add other config variables here and to Documentation/config.txt. */
1009 return 0;
1010 }
1011
1012 int git_default_config(const char *var, const char *value, void *dummy)
1013 {
1014 if (starts_with(var, "core."))
1015 return git_default_core_config(var, value);
1016
1017 if (starts_with(var, "user."))
1018 return git_ident_config(var, value, dummy);
1019
1020 if (starts_with(var, "i18n."))
1021 return git_default_i18n_config(var, value);
1022
1023 if (starts_with(var, "branch."))
1024 return git_default_branch_config(var, value);
1025
1026 if (starts_with(var, "push."))
1027 return git_default_push_config(var, value);
1028
1029 if (starts_with(var, "mailmap."))
1030 return git_default_mailmap_config(var, value);
1031
1032 if (starts_with(var, "advice."))
1033 return git_default_advice_config(var, value);
1034
1035 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1036 pager_use_color = git_config_bool(var,value);
1037 return 0;
1038 }
1039
1040 if (!strcmp(var, "pack.packsizelimit")) {
1041 pack_size_limit_cfg = git_config_ulong(var, value);
1042 return 0;
1043 }
1044 /* Add other config variables here and to Documentation/config.txt. */
1045 return 0;
1046 }
1047
1048 /*
1049 * All source specific fields in the union, die_on_error, name and the callbacks
1050 * fgetc, ungetc, ftell of top need to be initialized before calling
1051 * this function.
1052 */
1053 static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
1054 {
1055 int ret;
1056
1057 /* push config-file parsing state stack */
1058 top->prev = cf;
1059 top->linenr = 1;
1060 top->eof = 0;
1061 strbuf_init(&top->value, 1024);
1062 strbuf_init(&top->var, 1024);
1063 cf = top;
1064
1065 ret = git_parse_source(fn, data);
1066
1067 /* pop config-file parsing state stack */
1068 strbuf_release(&top->value);
1069 strbuf_release(&top->var);
1070 cf = top->prev;
1071
1072 return ret;
1073 }
1074
1075 static int do_config_from_file(config_fn_t fn,
1076 const char *origin_type, const char *name, const char *path, FILE *f,
1077 void *data)
1078 {
1079 struct config_source top;
1080
1081 top.u.file = f;
1082 top.origin_type = origin_type;
1083 top.name = name;
1084 top.path = path;
1085 top.die_on_error = 1;
1086 top.do_fgetc = config_file_fgetc;
1087 top.do_ungetc = config_file_ungetc;
1088 top.do_ftell = config_file_ftell;
1089
1090 return do_config_from(&top, fn, data);
1091 }
1092
1093 static int git_config_from_stdin(config_fn_t fn, void *data)
1094 {
1095 return do_config_from_file(fn, "standard input", "", NULL, stdin, data);
1096 }
1097
1098 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1099 {
1100 int ret = -1;
1101 FILE *f;
1102
1103 f = fopen(filename, "r");
1104 if (f) {
1105 flockfile(f);
1106 ret = do_config_from_file(fn, "file", filename, filename, f, data);
1107 funlockfile(f);
1108 fclose(f);
1109 }
1110 return ret;
1111 }
1112
1113 int git_config_from_mem(config_fn_t fn, const char *origin_type,
1114 const char *name, const char *buf, size_t len, void *data)
1115 {
1116 struct config_source top;
1117
1118 top.u.buf.buf = buf;
1119 top.u.buf.len = len;
1120 top.u.buf.pos = 0;
1121 top.origin_type = origin_type;
1122 top.name = name;
1123 top.path = NULL;
1124 top.die_on_error = 0;
1125 top.do_fgetc = config_buf_fgetc;
1126 top.do_ungetc = config_buf_ungetc;
1127 top.do_ftell = config_buf_ftell;
1128
1129 return do_config_from(&top, fn, data);
1130 }
1131
1132 static int git_config_from_blob_sha1(config_fn_t fn,
1133 const char *name,
1134 const unsigned char *sha1,
1135 void *data)
1136 {
1137 enum object_type type;
1138 char *buf;
1139 unsigned long size;
1140 int ret;
1141
1142 buf = read_sha1_file(sha1, &type, &size);
1143 if (!buf)
1144 return error("unable to load config blob object '%s'", name);
1145 if (type != OBJ_BLOB) {
1146 free(buf);
1147 return error("reference '%s' does not point to a blob", name);
1148 }
1149
1150 ret = git_config_from_mem(fn, "blob", name, buf, size, data);
1151 free(buf);
1152
1153 return ret;
1154 }
1155
1156 static int git_config_from_blob_ref(config_fn_t fn,
1157 const char *name,
1158 void *data)
1159 {
1160 unsigned char sha1[20];
1161
1162 if (get_sha1(name, sha1) < 0)
1163 return error("unable to resolve config blob '%s'", name);
1164 return git_config_from_blob_sha1(fn, name, sha1, data);
1165 }
1166
1167 const char *git_etc_gitconfig(void)
1168 {
1169 static const char *system_wide;
1170 if (!system_wide)
1171 system_wide = system_path(ETC_GITCONFIG);
1172 return system_wide;
1173 }
1174
1175 /*
1176 * Parse environment variable 'k' as a boolean (in various
1177 * possible spellings); if missing, use the default value 'def'.
1178 */
1179 int git_env_bool(const char *k, int def)
1180 {
1181 const char *v = getenv(k);
1182 return v ? git_config_bool(k, v) : def;
1183 }
1184
1185 /*
1186 * Parse environment variable 'k' as ulong with possibly a unit
1187 * suffix; if missing, use the default value 'val'.
1188 */
1189 unsigned long git_env_ulong(const char *k, unsigned long val)
1190 {
1191 const char *v = getenv(k);
1192 if (v && !git_parse_ulong(v, &val))
1193 die("failed to parse %s", k);
1194 return val;
1195 }
1196
1197 int git_config_system(void)
1198 {
1199 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1200 }
1201
1202 static int do_git_config_sequence(config_fn_t fn, void *data)
1203 {
1204 int ret = 0, found = 0;
1205 char *xdg_config = xdg_config_home("config");
1206 char *user_config = expand_user_path("~/.gitconfig");
1207 char *repo_config = git_pathdup("config");
1208
1209 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0)) {
1210 ret += git_config_from_file(fn, git_etc_gitconfig(),
1211 data);
1212 found += 1;
1213 }
1214
1215 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK)) {
1216 ret += git_config_from_file(fn, xdg_config, data);
1217 found += 1;
1218 }
1219
1220 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) {
1221 ret += git_config_from_file(fn, user_config, data);
1222 found += 1;
1223 }
1224
1225 if (repo_config && !access_or_die(repo_config, R_OK, 0)) {
1226 ret += git_config_from_file(fn, repo_config, data);
1227 found += 1;
1228 }
1229
1230 switch (git_config_from_parameters(fn, data)) {
1231 case -1: /* error */
1232 die(_("unable to parse command-line config"));
1233 break;
1234 case 0: /* found nothing */
1235 break;
1236 default: /* found at least one item */
1237 found++;
1238 break;
1239 }
1240
1241 free(xdg_config);
1242 free(user_config);
1243 free(repo_config);
1244 return ret == 0 ? found : ret;
1245 }
1246
1247 int git_config_with_options(config_fn_t fn, void *data,
1248 struct git_config_source *config_source,
1249 int respect_includes)
1250 {
1251 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1252
1253 if (respect_includes) {
1254 inc.fn = fn;
1255 inc.data = data;
1256 fn = git_config_include;
1257 data = &inc;
1258 }
1259
1260 /*
1261 * If we have a specific filename, use it. Otherwise, follow the
1262 * regular lookup sequence.
1263 */
1264 if (config_source && config_source->use_stdin)
1265 return git_config_from_stdin(fn, data);
1266 else if (config_source && config_source->file)
1267 return git_config_from_file(fn, config_source->file, data);
1268 else if (config_source && config_source->blob)
1269 return git_config_from_blob_ref(fn, config_source->blob, data);
1270
1271 return do_git_config_sequence(fn, data);
1272 }
1273
1274 static void git_config_raw(config_fn_t fn, void *data)
1275 {
1276 if (git_config_with_options(fn, data, NULL, 1) < 0)
1277 /*
1278 * git_config_with_options() normally returns only
1279 * positive values, as most errors are fatal, and
1280 * non-fatal potential errors are guarded by "if"
1281 * statements that are entered only when no error is
1282 * possible.
1283 *
1284 * If we ever encounter a non-fatal error, it means
1285 * something went really wrong and we should stop
1286 * immediately.
1287 */
1288 die(_("unknown error occured while reading the configuration files"));
1289 }
1290
1291 static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
1292 {
1293 int i, value_index;
1294 struct string_list *values;
1295 struct config_set_element *entry;
1296 struct configset_list *list = &cs->list;
1297 struct key_value_info *kv_info;
1298
1299 for (i = 0; i < list->nr; i++) {
1300 entry = list->items[i].e;
1301 value_index = list->items[i].value_index;
1302 values = &entry->value_list;
1303 if (fn(entry->key, values->items[value_index].string, data) < 0) {
1304 kv_info = values->items[value_index].util;
1305 git_die_config_linenr(entry->key, kv_info->filename, kv_info->linenr);
1306 }
1307 }
1308 }
1309
1310 static void git_config_check_init(void);
1311
1312 void git_config(config_fn_t fn, void *data)
1313 {
1314 git_config_check_init();
1315 configset_iter(&the_config_set, fn, data);
1316 }
1317
1318 static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1319 {
1320 struct config_set_element k;
1321 struct config_set_element *found_entry;
1322 char *normalized_key;
1323 /*
1324 * `key` may come from the user, so normalize it before using it
1325 * for querying entries from the hashmap.
1326 */
1327 if (git_config_parse_key(key, &normalized_key, NULL))
1328 return NULL;
1329
1330 hashmap_entry_init(&k, strhash(normalized_key));
1331 k.key = normalized_key;
1332 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1333 free(normalized_key);
1334 return found_entry;
1335 }
1336
1337 static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1338 {
1339 struct config_set_element *e;
1340 struct string_list_item *si;
1341 struct configset_list_item *l_item;
1342 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1343
1344 e = configset_find_element(cs, key);
1345 /*
1346 * Since the keys are being fed by git_config*() callback mechanism, they
1347 * are already normalized. So simply add them without any further munging.
1348 */
1349 if (!e) {
1350 e = xmalloc(sizeof(*e));
1351 hashmap_entry_init(e, strhash(key));
1352 e->key = xstrdup(key);
1353 string_list_init(&e->value_list, 1);
1354 hashmap_add(&cs->config_hash, e);
1355 }
1356 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
1357
1358 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1359 l_item = &cs->list.items[cs->list.nr++];
1360 l_item->e = e;
1361 l_item->value_index = e->value_list.nr - 1;
1362
1363 if (cf) {
1364 kv_info->filename = strintern(cf->name);
1365 kv_info->linenr = cf->linenr;
1366 } else {
1367 /* for values read from `git_config_from_parameters()` */
1368 kv_info->filename = NULL;
1369 kv_info->linenr = -1;
1370 }
1371 si->util = kv_info;
1372
1373 return 0;
1374 }
1375
1376 static int config_set_element_cmp(const struct config_set_element *e1,
1377 const struct config_set_element *e2, const void *unused)
1378 {
1379 return strcmp(e1->key, e2->key);
1380 }
1381
1382 void git_configset_init(struct config_set *cs)
1383 {
1384 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1385 cs->hash_initialized = 1;
1386 cs->list.nr = 0;
1387 cs->list.alloc = 0;
1388 cs->list.items = NULL;
1389 }
1390
1391 void git_configset_clear(struct config_set *cs)
1392 {
1393 struct config_set_element *entry;
1394 struct hashmap_iter iter;
1395 if (!cs->hash_initialized)
1396 return;
1397
1398 hashmap_iter_init(&cs->config_hash, &iter);
1399 while ((entry = hashmap_iter_next(&iter))) {
1400 free(entry->key);
1401 string_list_clear(&entry->value_list, 1);
1402 }
1403 hashmap_free(&cs->config_hash, 1);
1404 cs->hash_initialized = 0;
1405 free(cs->list.items);
1406 cs->list.nr = 0;
1407 cs->list.alloc = 0;
1408 cs->list.items = NULL;
1409 }
1410
1411 static int config_set_callback(const char *key, const char *value, void *cb)
1412 {
1413 struct config_set *cs = cb;
1414 configset_add_value(cs, key, value);
1415 return 0;
1416 }
1417
1418 int git_configset_add_file(struct config_set *cs, const char *filename)
1419 {
1420 return git_config_from_file(config_set_callback, filename, cs);
1421 }
1422
1423 int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1424 {
1425 const struct string_list *values = NULL;
1426 /*
1427 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1428 * queried key in the files of the configset, the value returned will be the last
1429 * value in the value list for that key.
1430 */
1431 values = git_configset_get_value_multi(cs, key);
1432
1433 if (!values)
1434 return 1;
1435 assert(values->nr > 0);
1436 *value = values->items[values->nr - 1].string;
1437 return 0;
1438 }
1439
1440 const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1441 {
1442 struct config_set_element *e = configset_find_element(cs, key);
1443 return e ? &e->value_list : NULL;
1444 }
1445
1446 int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1447 {
1448 const char *value;
1449 if (!git_configset_get_value(cs, key, &value))
1450 return git_config_string(dest, key, value);
1451 else
1452 return 1;
1453 }
1454
1455 int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1456 {
1457 return git_configset_get_string_const(cs, key, (const char **)dest);
1458 }
1459
1460 int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1461 {
1462 const char *value;
1463 if (!git_configset_get_value(cs, key, &value)) {
1464 *dest = git_config_int(key, value);
1465 return 0;
1466 } else
1467 return 1;
1468 }
1469
1470 int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1471 {
1472 const char *value;
1473 if (!git_configset_get_value(cs, key, &value)) {
1474 *dest = git_config_ulong(key, value);
1475 return 0;
1476 } else
1477 return 1;
1478 }
1479
1480 int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1481 {
1482 const char *value;
1483 if (!git_configset_get_value(cs, key, &value)) {
1484 *dest = git_config_bool(key, value);
1485 return 0;
1486 } else
1487 return 1;
1488 }
1489
1490 int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1491 int *is_bool, int *dest)
1492 {
1493 const char *value;
1494 if (!git_configset_get_value(cs, key, &value)) {
1495 *dest = git_config_bool_or_int(key, value, is_bool);
1496 return 0;
1497 } else
1498 return 1;
1499 }
1500
1501 int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1502 {
1503 const char *value;
1504 if (!git_configset_get_value(cs, key, &value)) {
1505 *dest = git_config_maybe_bool(key, value);
1506 if (*dest == -1)
1507 return -1;
1508 return 0;
1509 } else
1510 return 1;
1511 }
1512
1513 int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1514 {
1515 const char *value;
1516 if (!git_configset_get_value(cs, key, &value))
1517 return git_config_pathname(dest, key, value);
1518 else
1519 return 1;
1520 }
1521
1522 static void git_config_check_init(void)
1523 {
1524 if (the_config_set.hash_initialized)
1525 return;
1526 git_configset_init(&the_config_set);
1527 git_config_raw(config_set_callback, &the_config_set);
1528 }
1529
1530 void git_config_clear(void)
1531 {
1532 if (!the_config_set.hash_initialized)
1533 return;
1534 git_configset_clear(&the_config_set);
1535 }
1536
1537 int git_config_get_value(const char *key, const char **value)
1538 {
1539 git_config_check_init();
1540 return git_configset_get_value(&the_config_set, key, value);
1541 }
1542
1543 const struct string_list *git_config_get_value_multi(const char *key)
1544 {
1545 git_config_check_init();
1546 return git_configset_get_value_multi(&the_config_set, key);
1547 }
1548
1549 int git_config_get_string_const(const char *key, const char **dest)
1550 {
1551 int ret;
1552 git_config_check_init();
1553 ret = git_configset_get_string_const(&the_config_set, key, dest);
1554 if (ret < 0)
1555 git_die_config(key, NULL);
1556 return ret;
1557 }
1558
1559 int git_config_get_string(const char *key, char **dest)
1560 {
1561 git_config_check_init();
1562 return git_config_get_string_const(key, (const char **)dest);
1563 }
1564
1565 int git_config_get_int(const char *key, int *dest)
1566 {
1567 git_config_check_init();
1568 return git_configset_get_int(&the_config_set, key, dest);
1569 }
1570
1571 int git_config_get_ulong(const char *key, unsigned long *dest)
1572 {
1573 git_config_check_init();
1574 return git_configset_get_ulong(&the_config_set, key, dest);
1575 }
1576
1577 int git_config_get_bool(const char *key, int *dest)
1578 {
1579 git_config_check_init();
1580 return git_configset_get_bool(&the_config_set, key, dest);
1581 }
1582
1583 int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1584 {
1585 git_config_check_init();
1586 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1587 }
1588
1589 int git_config_get_maybe_bool(const char *key, int *dest)
1590 {
1591 git_config_check_init();
1592 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1593 }
1594
1595 int git_config_get_pathname(const char *key, const char **dest)
1596 {
1597 int ret;
1598 git_config_check_init();
1599 ret = git_configset_get_pathname(&the_config_set, key, dest);
1600 if (ret < 0)
1601 git_die_config(key, NULL);
1602 return ret;
1603 }
1604
1605 int git_config_get_untracked_cache(void)
1606 {
1607 int val = -1;
1608 const char *v;
1609
1610 /* Hack for test programs like test-dump-untracked-cache */
1611 if (ignore_untracked_cache_config)
1612 return -1;
1613
1614 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
1615 return val;
1616
1617 if (!git_config_get_value("core.untrackedcache", &v)) {
1618 if (!strcasecmp(v, "keep"))
1619 return -1;
1620
1621 error("unknown core.untrackedCache value '%s'; "
1622 "using 'keep' default value", v);
1623 return -1;
1624 }
1625
1626 return -1; /* default value */
1627 }
1628
1629 NORETURN
1630 void git_die_config_linenr(const char *key, const char *filename, int linenr)
1631 {
1632 if (!filename)
1633 die(_("unable to parse '%s' from command-line config"), key);
1634 else
1635 die(_("bad config variable '%s' in file '%s' at line %d"),
1636 key, filename, linenr);
1637 }
1638
1639 NORETURN __attribute__((format(printf, 2, 3)))
1640 void git_die_config(const char *key, const char *err, ...)
1641 {
1642 const struct string_list *values;
1643 struct key_value_info *kv_info;
1644
1645 if (err) {
1646 va_list params;
1647 va_start(params, err);
1648 vreportf("error: ", err, params);
1649 va_end(params);
1650 }
1651 values = git_config_get_value_multi(key);
1652 kv_info = values->items[values->nr - 1].util;
1653 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
1654 }
1655
1656 /*
1657 * Find all the stuff for git_config_set() below.
1658 */
1659
1660 static struct {
1661 int baselen;
1662 char *key;
1663 int do_not_match;
1664 regex_t *value_regex;
1665 int multi_replace;
1666 size_t *offset;
1667 unsigned int offset_alloc;
1668 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
1669 int seen;
1670 } store;
1671
1672 static int matches(const char *key, const char *value)
1673 {
1674 if (strcmp(key, store.key))
1675 return 0; /* not ours */
1676 if (!store.value_regex)
1677 return 1; /* always matches */
1678 if (store.value_regex == CONFIG_REGEX_NONE)
1679 return 0; /* never matches */
1680
1681 return store.do_not_match ^
1682 (value && !regexec(store.value_regex, value, 0, NULL, 0));
1683 }
1684
1685 static int store_aux(const char *key, const char *value, void *cb)
1686 {
1687 const char *ep;
1688 size_t section_len;
1689
1690 switch (store.state) {
1691 case KEY_SEEN:
1692 if (matches(key, value)) {
1693 if (store.seen == 1 && store.multi_replace == 0) {
1694 warning(_("%s has multiple values"), key);
1695 }
1696
1697 ALLOC_GROW(store.offset, store.seen + 1,
1698 store.offset_alloc);
1699
1700 store.offset[store.seen] = cf->do_ftell(cf);
1701 store.seen++;
1702 }
1703 break;
1704 case SECTION_SEEN:
1705 /*
1706 * What we are looking for is in store.key (both
1707 * section and var), and its section part is baselen
1708 * long. We found key (again, both section and var).
1709 * We would want to know if this key is in the same
1710 * section as what we are looking for. We already
1711 * know we are in the same section as what should
1712 * hold store.key.
1713 */
1714 ep = strrchr(key, '.');
1715 section_len = ep - key;
1716
1717 if ((section_len != store.baselen) ||
1718 memcmp(key, store.key, section_len+1)) {
1719 store.state = SECTION_END_SEEN;
1720 break;
1721 }
1722
1723 /*
1724 * Do not increment matches: this is no match, but we
1725 * just made sure we are in the desired section.
1726 */
1727 ALLOC_GROW(store.offset, store.seen + 1,
1728 store.offset_alloc);
1729 store.offset[store.seen] = cf->do_ftell(cf);
1730 /* fallthru */
1731 case SECTION_END_SEEN:
1732 case START:
1733 if (matches(key, value)) {
1734 ALLOC_GROW(store.offset, store.seen + 1,
1735 store.offset_alloc);
1736 store.offset[store.seen] = cf->do_ftell(cf);
1737 store.state = KEY_SEEN;
1738 store.seen++;
1739 } else {
1740 if (strrchr(key, '.') - key == store.baselen &&
1741 !strncmp(key, store.key, store.baselen)) {
1742 store.state = SECTION_SEEN;
1743 ALLOC_GROW(store.offset,
1744 store.seen + 1,
1745 store.offset_alloc);
1746 store.offset[store.seen] = cf->do_ftell(cf);
1747 }
1748 }
1749 }
1750 return 0;
1751 }
1752
1753 static int write_error(const char *filename)
1754 {
1755 error("failed to write new configuration file %s", filename);
1756
1757 /* Same error code as "failed to rename". */
1758 return 4;
1759 }
1760
1761 static int store_write_section(int fd, const char *key)
1762 {
1763 const char *dot;
1764 int i, success;
1765 struct strbuf sb = STRBUF_INIT;
1766
1767 dot = memchr(key, '.', store.baselen);
1768 if (dot) {
1769 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1770 for (i = dot - key + 1; i < store.baselen; i++) {
1771 if (key[i] == '"' || key[i] == '\\')
1772 strbuf_addch(&sb, '\\');
1773 strbuf_addch(&sb, key[i]);
1774 }
1775 strbuf_addstr(&sb, "\"]\n");
1776 } else {
1777 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1778 }
1779
1780 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1781 strbuf_release(&sb);
1782
1783 return success;
1784 }
1785
1786 static int store_write_pair(int fd, const char *key, const char *value)
1787 {
1788 int i, success;
1789 int length = strlen(key + store.baselen + 1);
1790 const char *quote = "";
1791 struct strbuf sb = STRBUF_INIT;
1792
1793 /*
1794 * Check to see if the value needs to be surrounded with a dq pair.
1795 * Note that problematic characters are always backslash-quoted; this
1796 * check is about not losing leading or trailing SP and strings that
1797 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1798 * configuration parser.
1799 */
1800 if (value[0] == ' ')
1801 quote = "\"";
1802 for (i = 0; value[i]; i++)
1803 if (value[i] == ';' || value[i] == '#')
1804 quote = "\"";
1805 if (i && value[i - 1] == ' ')
1806 quote = "\"";
1807
1808 strbuf_addf(&sb, "\t%.*s = %s",
1809 length, key + store.baselen + 1, quote);
1810
1811 for (i = 0; value[i]; i++)
1812 switch (value[i]) {
1813 case '\n':
1814 strbuf_addstr(&sb, "\\n");
1815 break;
1816 case '\t':
1817 strbuf_addstr(&sb, "\\t");
1818 break;
1819 case '"':
1820 case '\\':
1821 strbuf_addch(&sb, '\\');
1822 default:
1823 strbuf_addch(&sb, value[i]);
1824 break;
1825 }
1826 strbuf_addf(&sb, "%s\n", quote);
1827
1828 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1829 strbuf_release(&sb);
1830
1831 return success;
1832 }
1833
1834 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1835 size_t offset_, int *found_bracket)
1836 {
1837 size_t equal_offset = size, bracket_offset = size;
1838 ssize_t offset;
1839
1840 contline:
1841 for (offset = offset_-2; offset > 0
1842 && contents[offset] != '\n'; offset--)
1843 switch (contents[offset]) {
1844 case '=': equal_offset = offset; break;
1845 case ']': bracket_offset = offset; break;
1846 }
1847 if (offset > 0 && contents[offset-1] == '\\') {
1848 offset_ = offset;
1849 goto contline;
1850 }
1851 if (bracket_offset < equal_offset) {
1852 *found_bracket = 1;
1853 offset = bracket_offset+1;
1854 } else
1855 offset++;
1856
1857 return offset;
1858 }
1859
1860 int git_config_set_in_file_gently(const char *config_filename,
1861 const char *key, const char *value)
1862 {
1863 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
1864 }
1865
1866 void git_config_set_in_file(const char *config_filename,
1867 const char *key, const char *value)
1868 {
1869 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
1870 }
1871
1872 int git_config_set_gently(const char *key, const char *value)
1873 {
1874 return git_config_set_multivar_gently(key, value, NULL, 0);
1875 }
1876
1877 void git_config_set(const char *key, const char *value)
1878 {
1879 git_config_set_multivar(key, value, NULL, 0);
1880 }
1881
1882 /*
1883 * Auxiliary function to sanity-check and split the key into the section
1884 * identifier and variable name.
1885 *
1886 * Returns 0 on success, -1 when there is an invalid character in the key and
1887 * -2 if there is no section name in the key.
1888 *
1889 * store_key - pointer to char* which will hold a copy of the key with
1890 * lowercase section and variable name
1891 * baselen - pointer to int which will hold the length of the
1892 * section + subsection part, can be NULL
1893 */
1894 static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
1895 {
1896 int i, dot, baselen;
1897 const char *last_dot = strrchr(key, '.');
1898
1899 /*
1900 * Since "key" actually contains the section name and the real
1901 * key name separated by a dot, we have to know where the dot is.
1902 */
1903
1904 if (last_dot == NULL || last_dot == key) {
1905 if (!quiet)
1906 error("key does not contain a section: %s", key);
1907 return -CONFIG_NO_SECTION_OR_NAME;
1908 }
1909
1910 if (!last_dot[1]) {
1911 if (!quiet)
1912 error("key does not contain variable name: %s", key);
1913 return -CONFIG_NO_SECTION_OR_NAME;
1914 }
1915
1916 baselen = last_dot - key;
1917 if (baselen_)
1918 *baselen_ = baselen;
1919
1920 /*
1921 * Validate the key and while at it, lower case it for matching.
1922 */
1923 if (store_key)
1924 *store_key = xmallocz(strlen(key));
1925
1926 dot = 0;
1927 for (i = 0; key[i]; i++) {
1928 unsigned char c = key[i];
1929 if (c == '.')
1930 dot = 1;
1931 /* Leave the extended basename untouched.. */
1932 if (!dot || i > baselen) {
1933 if (!iskeychar(c) ||
1934 (i == baselen + 1 && !isalpha(c))) {
1935 if (!quiet)
1936 error("invalid key: %s", key);
1937 goto out_free_ret_1;
1938 }
1939 c = tolower(c);
1940 } else if (c == '\n') {
1941 if (!quiet)
1942 error("invalid key (newline): %s", key);
1943 goto out_free_ret_1;
1944 }
1945 if (store_key)
1946 (*store_key)[i] = c;
1947 }
1948
1949 return 0;
1950
1951 out_free_ret_1:
1952 if (store_key) {
1953 free(*store_key);
1954 *store_key = NULL;
1955 }
1956 return -CONFIG_INVALID_KEY;
1957 }
1958
1959 int git_config_parse_key(const char *key, char **store_key, int *baselen)
1960 {
1961 return git_config_parse_key_1(key, store_key, baselen, 0);
1962 }
1963
1964 int git_config_key_is_valid(const char *key)
1965 {
1966 return !git_config_parse_key_1(key, NULL, NULL, 1);
1967 }
1968
1969 /*
1970 * If value==NULL, unset in (remove from) config,
1971 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1972 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
1973 * (only add a new one)
1974 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1975 * else all matching key/values (regardless how many) are removed,
1976 * before the new pair is written.
1977 *
1978 * Returns 0 on success.
1979 *
1980 * This function does this:
1981 *
1982 * - it locks the config file by creating ".git/config.lock"
1983 *
1984 * - it then parses the config using store_aux() as validator to find
1985 * the position on the key/value pair to replace. If it is to be unset,
1986 * it must be found exactly once.
1987 *
1988 * - the config file is mmap()ed and the part before the match (if any) is
1989 * written to the lock file, then the changed part and the rest.
1990 *
1991 * - the config file is removed and the lock file rename()d to it.
1992 *
1993 */
1994 int git_config_set_multivar_in_file_gently(const char *config_filename,
1995 const char *key, const char *value,
1996 const char *value_regex,
1997 int multi_replace)
1998 {
1999 int fd = -1, in_fd = -1;
2000 int ret;
2001 struct lock_file *lock = NULL;
2002 char *filename_buf = NULL;
2003 char *contents = NULL;
2004 size_t contents_sz;
2005
2006 /* parse-key returns negative; flip the sign to feed exit(3) */
2007 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2008 if (ret)
2009 goto out_free;
2010
2011 store.multi_replace = multi_replace;
2012
2013 if (!config_filename)
2014 config_filename = filename_buf = git_pathdup("config");
2015
2016 /*
2017 * The lock serves a purpose in addition to locking: the new
2018 * contents of .git/config will be written into it.
2019 */
2020 lock = xcalloc(1, sizeof(struct lock_file));
2021 fd = hold_lock_file_for_update(lock, config_filename, 0);
2022 if (fd < 0) {
2023 error_errno("could not lock config file %s", config_filename);
2024 free(store.key);
2025 ret = CONFIG_NO_LOCK;
2026 goto out_free;
2027 }
2028
2029 /*
2030 * If .git/config does not exist yet, write a minimal version.
2031 */
2032 in_fd = open(config_filename, O_RDONLY);
2033 if ( in_fd < 0 ) {
2034 free(store.key);
2035
2036 if ( ENOENT != errno ) {
2037 error_errno("opening %s", config_filename);
2038 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
2039 goto out_free;
2040 }
2041 /* if nothing to unset, error out */
2042 if (value == NULL) {
2043 ret = CONFIG_NOTHING_SET;
2044 goto out_free;
2045 }
2046
2047 store.key = (char *)key;
2048 if (!store_write_section(fd, key) ||
2049 !store_write_pair(fd, key, value))
2050 goto write_err_out;
2051 } else {
2052 struct stat st;
2053 size_t copy_begin, copy_end;
2054 int i, new_line = 0;
2055
2056 if (value_regex == NULL)
2057 store.value_regex = NULL;
2058 else if (value_regex == CONFIG_REGEX_NONE)
2059 store.value_regex = CONFIG_REGEX_NONE;
2060 else {
2061 if (value_regex[0] == '!') {
2062 store.do_not_match = 1;
2063 value_regex++;
2064 } else
2065 store.do_not_match = 0;
2066
2067 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
2068 if (regcomp(store.value_regex, value_regex,
2069 REG_EXTENDED)) {
2070 error("invalid pattern: %s", value_regex);
2071 free(store.value_regex);
2072 ret = CONFIG_INVALID_PATTERN;
2073 goto out_free;
2074 }
2075 }
2076
2077 ALLOC_GROW(store.offset, 1, store.offset_alloc);
2078 store.offset[0] = 0;
2079 store.state = START;
2080 store.seen = 0;
2081
2082 /*
2083 * After this, store.offset will contain the *end* offset
2084 * of the last match, or remain at 0 if no match was found.
2085 * As a side effect, we make sure to transform only a valid
2086 * existing config file.
2087 */
2088 if (git_config_from_file(store_aux, config_filename, NULL)) {
2089 error("invalid config file %s", config_filename);
2090 free(store.key);
2091 if (store.value_regex != NULL &&
2092 store.value_regex != CONFIG_REGEX_NONE) {
2093 regfree(store.value_regex);
2094 free(store.value_regex);
2095 }
2096 ret = CONFIG_INVALID_FILE;
2097 goto out_free;
2098 }
2099
2100 free(store.key);
2101 if (store.value_regex != NULL &&
2102 store.value_regex != CONFIG_REGEX_NONE) {
2103 regfree(store.value_regex);
2104 free(store.value_regex);
2105 }
2106
2107 /* if nothing to unset, or too many matches, error out */
2108 if ((store.seen == 0 && value == NULL) ||
2109 (store.seen > 1 && multi_replace == 0)) {
2110 ret = CONFIG_NOTHING_SET;
2111 goto out_free;
2112 }
2113
2114 fstat(in_fd, &st);
2115 contents_sz = xsize_t(st.st_size);
2116 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2117 MAP_PRIVATE, in_fd, 0);
2118 if (contents == MAP_FAILED) {
2119 if (errno == ENODEV && S_ISDIR(st.st_mode))
2120 errno = EISDIR;
2121 error_errno("unable to mmap '%s'", config_filename);
2122 ret = CONFIG_INVALID_FILE;
2123 contents = NULL;
2124 goto out_free;
2125 }
2126 close(in_fd);
2127 in_fd = -1;
2128
2129 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2130 error_errno("chmod on %s failed", get_lock_file_path(lock));
2131 ret = CONFIG_NO_WRITE;
2132 goto out_free;
2133 }
2134
2135 if (store.seen == 0)
2136 store.seen = 1;
2137
2138 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2139 if (store.offset[i] == 0) {
2140 store.offset[i] = copy_end = contents_sz;
2141 } else if (store.state != KEY_SEEN) {
2142 copy_end = store.offset[i];
2143 } else
2144 copy_end = find_beginning_of_line(
2145 contents, contents_sz,
2146 store.offset[i]-2, &new_line);
2147
2148 if (copy_end > 0 && contents[copy_end-1] != '\n')
2149 new_line = 1;
2150
2151 /* write the first part of the config */
2152 if (copy_end > copy_begin) {
2153 if (write_in_full(fd, contents + copy_begin,
2154 copy_end - copy_begin) <
2155 copy_end - copy_begin)
2156 goto write_err_out;
2157 if (new_line &&
2158 write_str_in_full(fd, "\n") != 1)
2159 goto write_err_out;
2160 }
2161 copy_begin = store.offset[i];
2162 }
2163
2164 /* write the pair (value == NULL means unset) */
2165 if (value != NULL) {
2166 if (store.state == START) {
2167 if (!store_write_section(fd, key))
2168 goto write_err_out;
2169 }
2170 if (!store_write_pair(fd, key, value))
2171 goto write_err_out;
2172 }
2173
2174 /* write the rest of the config */
2175 if (copy_begin < contents_sz)
2176 if (write_in_full(fd, contents + copy_begin,
2177 contents_sz - copy_begin) <
2178 contents_sz - copy_begin)
2179 goto write_err_out;
2180
2181 munmap(contents, contents_sz);
2182 contents = NULL;
2183 }
2184
2185 if (commit_lock_file(lock) < 0) {
2186 error_errno("could not write config file %s", config_filename);
2187 ret = CONFIG_NO_WRITE;
2188 lock = NULL;
2189 goto out_free;
2190 }
2191
2192 /*
2193 * lock is committed, so don't try to roll it back below.
2194 * NOTE: Since lockfile.c keeps a linked list of all created
2195 * lock_file structures, it isn't safe to free(lock). It's
2196 * better to just leave it hanging around.
2197 */
2198 lock = NULL;
2199 ret = 0;
2200
2201 /* Invalidate the config cache */
2202 git_config_clear();
2203
2204 out_free:
2205 if (lock)
2206 rollback_lock_file(lock);
2207 free(filename_buf);
2208 if (contents)
2209 munmap(contents, contents_sz);
2210 if (in_fd >= 0)
2211 close(in_fd);
2212 return ret;
2213
2214 write_err_out:
2215 ret = write_error(get_lock_file_path(lock));
2216 goto out_free;
2217
2218 }
2219
2220 void git_config_set_multivar_in_file(const char *config_filename,
2221 const char *key, const char *value,
2222 const char *value_regex, int multi_replace)
2223 {
2224 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2225 value_regex, multi_replace))
2226 return;
2227 if (value)
2228 die(_("could not set '%s' to '%s'"), key, value);
2229 else
2230 die(_("could not unset '%s'"), key);
2231 }
2232
2233 int git_config_set_multivar_gently(const char *key, const char *value,
2234 const char *value_regex, int multi_replace)
2235 {
2236 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2237 multi_replace);
2238 }
2239
2240 void git_config_set_multivar(const char *key, const char *value,
2241 const char *value_regex, int multi_replace)
2242 {
2243 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2244 multi_replace);
2245 }
2246
2247 static int section_name_match (const char *buf, const char *name)
2248 {
2249 int i = 0, j = 0, dot = 0;
2250 if (buf[i] != '[')
2251 return 0;
2252 for (i = 1; buf[i] && buf[i] != ']'; i++) {
2253 if (!dot && isspace(buf[i])) {
2254 dot = 1;
2255 if (name[j++] != '.')
2256 break;
2257 for (i++; isspace(buf[i]); i++)
2258 ; /* do nothing */
2259 if (buf[i] != '"')
2260 break;
2261 continue;
2262 }
2263 if (buf[i] == '\\' && dot)
2264 i++;
2265 else if (buf[i] == '"' && dot) {
2266 for (i++; isspace(buf[i]); i++)
2267 ; /* do_nothing */
2268 break;
2269 }
2270 if (buf[i] != name[j++])
2271 break;
2272 }
2273 if (buf[i] == ']' && name[j] == 0) {
2274 /*
2275 * We match, now just find the right length offset by
2276 * gobbling up any whitespace after it, as well
2277 */
2278 i++;
2279 for (; buf[i] && isspace(buf[i]); i++)
2280 ; /* do nothing */
2281 return i;
2282 }
2283 return 0;
2284 }
2285
2286 static int section_name_is_ok(const char *name)
2287 {
2288 /* Empty section names are bogus. */
2289 if (!*name)
2290 return 0;
2291
2292 /*
2293 * Before a dot, we must be alphanumeric or dash. After the first dot,
2294 * anything goes, so we can stop checking.
2295 */
2296 for (; *name && *name != '.'; name++)
2297 if (*name != '-' && !isalnum(*name))
2298 return 0;
2299 return 1;
2300 }
2301
2302 /* if new_name == NULL, the section is removed instead */
2303 int git_config_rename_section_in_file(const char *config_filename,
2304 const char *old_name, const char *new_name)
2305 {
2306 int ret = 0, remove = 0;
2307 char *filename_buf = NULL;
2308 struct lock_file *lock;
2309 int out_fd;
2310 char buf[1024];
2311 FILE *config_file;
2312 struct stat st;
2313
2314 if (new_name && !section_name_is_ok(new_name)) {
2315 ret = error("invalid section name: %s", new_name);
2316 goto out;
2317 }
2318
2319 if (!config_filename)
2320 config_filename = filename_buf = git_pathdup("config");
2321
2322 lock = xcalloc(1, sizeof(struct lock_file));
2323 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
2324 if (out_fd < 0) {
2325 ret = error("could not lock config file %s", config_filename);
2326 goto out;
2327 }
2328
2329 if (!(config_file = fopen(config_filename, "rb"))) {
2330 /* no config file means nothing to rename, no error */
2331 goto unlock_and_out;
2332 }
2333
2334 fstat(fileno(config_file), &st);
2335
2336 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2337 ret = error_errno("chmod on %s failed",
2338 get_lock_file_path(lock));
2339 goto out;
2340 }
2341
2342 while (fgets(buf, sizeof(buf), config_file)) {
2343 int i;
2344 int length;
2345 char *output = buf;
2346 for (i = 0; buf[i] && isspace(buf[i]); i++)
2347 ; /* do nothing */
2348 if (buf[i] == '[') {
2349 /* it's a section */
2350 int offset = section_name_match(&buf[i], old_name);
2351 if (offset > 0) {
2352 ret++;
2353 if (new_name == NULL) {
2354 remove = 1;
2355 continue;
2356 }
2357 store.baselen = strlen(new_name);
2358 if (!store_write_section(out_fd, new_name)) {
2359 ret = write_error(get_lock_file_path(lock));
2360 goto out;
2361 }
2362 /*
2363 * We wrote out the new section, with
2364 * a newline, now skip the old
2365 * section's length
2366 */
2367 output += offset + i;
2368 if (strlen(output) > 0) {
2369 /*
2370 * More content means there's
2371 * a declaration to put on the
2372 * next line; indent with a
2373 * tab
2374 */
2375 output -= 1;
2376 output[0] = '\t';
2377 }
2378 }
2379 remove = 0;
2380 }
2381 if (remove)
2382 continue;
2383 length = strlen(output);
2384 if (write_in_full(out_fd, output, length) != length) {
2385 ret = write_error(get_lock_file_path(lock));
2386 goto out;
2387 }
2388 }
2389 fclose(config_file);
2390 unlock_and_out:
2391 if (commit_lock_file(lock) < 0)
2392 ret = error_errno("could not write config file %s",
2393 config_filename);
2394 out:
2395 free(filename_buf);
2396 return ret;
2397 }
2398
2399 int git_config_rename_section(const char *old_name, const char *new_name)
2400 {
2401 return git_config_rename_section_in_file(NULL, old_name, new_name);
2402 }
2403
2404 /*
2405 * Call this to report error for your variable that should not
2406 * get a boolean value (i.e. "[my] var" means "true").
2407 */
2408 #undef config_error_nonbool
2409 int config_error_nonbool(const char *var)
2410 {
2411 return error("missing value for '%s'", var);
2412 }
2413
2414 int parse_config_key(const char *var,
2415 const char *section,
2416 const char **subsection, int *subsection_len,
2417 const char **key)
2418 {
2419 int section_len = strlen(section);
2420 const char *dot;
2421
2422 /* Does it start with "section." ? */
2423 if (!starts_with(var, section) || var[section_len] != '.')
2424 return -1;
2425
2426 /*
2427 * Find the key; we don't know yet if we have a subsection, but we must
2428 * parse backwards from the end, since the subsection may have dots in
2429 * it, too.
2430 */
2431 dot = strrchr(var, '.');
2432 *key = dot + 1;
2433
2434 /* Did we have a subsection at all? */
2435 if (dot == var + section_len) {
2436 *subsection = NULL;
2437 *subsection_len = 0;
2438 }
2439 else {
2440 *subsection = var + section_len + 1;
2441 *subsection_len = dot - *subsection;
2442 }
2443
2444 return 0;
2445 }
2446
2447 const char *current_config_origin_type(void)
2448 {
2449 return cf && cf->origin_type ? cf->origin_type : "command line";
2450 }
2451
2452 const char *current_config_name(void)
2453 {
2454 return cf && cf->name ? cf->name : "";
2455 }
The Best VCS Around