repo-settings: parse core.untrackedCache
[git/git.git] / config.c
CommitLineData
10bea152
JS
1/*
2 * GIT - The information manager from hell
3 *
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
6 *
7 */
17712991 8#include "cache.h"
e730b81d 9#include "branch.h"
b2141fc1 10#include "config.h"
3b256228 11#include "repository.h"
697cc8ef 12#include "lockfile.h"
d807c4a0 13#include "exec-cmd.h"
572e4f6a 14#include "strbuf.h"
2b64fc89 15#include "quote.h"
3c8687a7
TA
16#include "hashmap.h"
17#include "string-list.h"
cbd53a21 18#include "object-store.h"
599446dc 19#include "utf8.h"
3efd0bed 20#include "dir.h"
6d2f9acc 21#include "color.h"
07b2c0ea 22#include "refs.h"
17712991 23
4d8dd149
HV
24struct config_source {
25 struct config_source *prev;
26 union {
27 FILE *file;
1bc88819
HV
28 struct config_buf {
29 const char *buf;
30 size_t len;
31 size_t pos;
32 } buf;
4d8dd149 33 } u;
1b8132d9 34 enum config_origin_type origin_type;
924aaf3e 35 const char *name;
d14d4244 36 const char *path;
66f97228 37 enum config_error_action default_error_action;
924aaf3e
RJ
38 int linenr;
39 int eof;
40 struct strbuf value;
0971e992 41 struct strbuf var;
2d84f13d 42 unsigned subsection_case_sensitive : 1;
924aaf3e 43
49d6cfa5
JK
44 int (*do_fgetc)(struct config_source *c);
45 int (*do_ungetc)(int c, struct config_source *conf);
46 long (*do_ftell)(struct config_source *c);
4d8dd149
HV
47};
48
0d44a2da
JK
49/*
50 * These variables record the "current" config source, which
51 * can be accessed by parsing callbacks.
52 *
53 * The "cf" variable will be non-NULL only when we are actually parsing a real
54 * config source (file, blob, cmdline, etc).
55 *
56 * The "current_config_kvi" variable will be non-NULL only when we are feeding
57 * cached config from a configset into a callback.
58 *
59 * They should generally never be non-NULL at the same time. If they are both
60 * NULL, then we aren't parsing anything (and depending on the function looking
61 * at the variables, it's either a bug for it to be called in the first place,
62 * or it's a function which can be reused for non-config purposes, and should
63 * fall back to some sane behavior).
64 */
4d8dd149 65static struct config_source *cf;
0d44a2da 66static struct key_value_info *current_config_kvi;
924aaf3e 67
9acc5911
JK
68/*
69 * Similar to the variables above, this gives access to the "scope" of the
70 * current value (repo, global, etc). For cached values, it can be found via
71 * the current_config_kvi as above. During parsing, the current value can be
72 * found in this variable. It's not part of "cf" because it transcends a single
73 * file (i.e., a file included from .git/config is still in "repo" scope).
74 */
75static enum config_scope current_parsing_scope;
924aaf3e 76
8de7eeb5
JH
77static int core_compression_seen;
78static int pack_compression_seen;
960ccca6
DH
79static int zlib_compression_seen;
80
4d8dd149
HV
81static int config_file_fgetc(struct config_source *conf)
82{
260d408e 83 return getc_unlocked(conf->u.file);
4d8dd149
HV
84}
85
86static int config_file_ungetc(int c, struct config_source *conf)
87{
88 return ungetc(c, conf->u.file);
89}
90
91static long config_file_ftell(struct config_source *conf)
92{
93 return ftell(conf->u.file);
94}
95
1bc88819
HV
96
97static int config_buf_fgetc(struct config_source *conf)
98{
99 if (conf->u.buf.pos < conf->u.buf.len)
100 return conf->u.buf.buf[conf->u.buf.pos++];
101
102 return EOF;
103}
104
105static int config_buf_ungetc(int c, struct config_source *conf)
106{
1d0655c1
JK
107 if (conf->u.buf.pos > 0) {
108 conf->u.buf.pos--;
109 if (conf->u.buf.buf[conf->u.buf.pos] != c)
033abf97 110 BUG("config_buf can only ungetc the same character");
1d0655c1
JK
111 return c;
112 }
1bc88819
HV
113
114 return EOF;
115}
116
117static long config_buf_ftell(struct config_source *conf)
118{
119 return conf->u.buf.pos;
120}
121
9b25a0b5 122#define MAX_INCLUDE_DEPTH 10
a769bfc7 123static const char include_depth_advice[] = N_(
9b25a0b5
JK
124"exceeded maximum include depth (%d) while including\n"
125" %s\n"
126"from\n"
127" %s\n"
27c929ed 128"This might be due to circular includes.");
9b25a0b5
JK
129static int handle_path_include(const char *path, struct config_include_data *inc)
130{
131 int ret = 0;
132 struct strbuf buf = STRBUF_INIT;
67beb600 133 char *expanded;
4c0a89fc 134
67beb600
JK
135 if (!path)
136 return config_error_nonbool("include.path");
137
4aad2f16 138 expanded = expand_user_path(path, 0);
4c0a89fc 139 if (!expanded)
a769bfc7 140 return error(_("could not expand include path '%s'"), path);
4c0a89fc 141 path = expanded;
9b25a0b5
JK
142
143 /*
144 * Use an absolute path as-is, but interpret relative paths
145 * based on the including config file.
146 */
147 if (!is_absolute_path(path)) {
148 char *slash;
149
d14d4244 150 if (!cf || !cf->path)
a769bfc7 151 return error(_("relative config includes must come from files"));
9b25a0b5 152
d14d4244 153 slash = find_last_dir_sep(cf->path);
9b25a0b5 154 if (slash)
d14d4244 155 strbuf_add(&buf, cf->path, slash - cf->path + 1);
9b25a0b5
JK
156 strbuf_addstr(&buf, path);
157 path = buf.buf;
158 }
159
4698c8fe 160 if (!access_or_die(path, R_OK, 0)) {
9b25a0b5 161 if (++inc->depth > MAX_INCLUDE_DEPTH)
a769bfc7 162 die(_(include_depth_advice), MAX_INCLUDE_DEPTH, path,
3258258f
JK
163 !cf ? "<unknown>" :
164 cf->name ? cf->name :
165 "the command line");
9b25a0b5
JK
166 ret = git_config_from_file(git_config_include, path, inc);
167 inc->depth--;
168 }
169 strbuf_release(&buf);
4c0a89fc 170 free(expanded);
9b25a0b5
JK
171 return ret;
172}
173
07b2c0ea
DL
174static void add_trailing_starstar_for_dir(struct strbuf *pat)
175{
176 if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
177 strbuf_addstr(pat, "**");
178}
179
3efd0bed
NTND
180static int prepare_include_condition_pattern(struct strbuf *pat)
181{
182 struct strbuf path = STRBUF_INIT;
183 char *expanded;
184 int prefix = 0;
185
86f95157 186 expanded = expand_user_path(pat->buf, 1);
3efd0bed
NTND
187 if (expanded) {
188 strbuf_reset(pat);
189 strbuf_addstr(pat, expanded);
190 free(expanded);
191 }
192
193 if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
194 const char *slash;
195
196 if (!cf || !cf->path)
197 return error(_("relative config include "
198 "conditionals must come from files"));
199
86f95157 200 strbuf_realpath(&path, cf->path, 1);
3efd0bed
NTND
201 slash = find_last_dir_sep(path.buf);
202 if (!slash)
033abf97 203 BUG("how is this possible?");
3efd0bed
NTND
204 strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
205 prefix = slash - path.buf + 1 /* slash */;
206 } else if (!is_absolute_path(pat->buf))
207 strbuf_insert(pat, 0, "**/", 3);
208
07b2c0ea 209 add_trailing_starstar_for_dir(pat);
3efd0bed
NTND
210
211 strbuf_release(&path);
212 return prefix;
213}
214
2185fde5
NTND
215static int include_by_gitdir(const struct config_options *opts,
216 const char *cond, size_t cond_len, int icase)
3efd0bed
NTND
217{
218 struct strbuf text = STRBUF_INIT;
219 struct strbuf pattern = STRBUF_INIT;
220 int ret = 0, prefix;
2185fde5 221 const char *git_dir;
0624c63c 222 int already_tried_absolute = 0;
3efd0bed 223
2185fde5
NTND
224 if (opts->git_dir)
225 git_dir = opts->git_dir;
2185fde5
NTND
226 else
227 goto done;
228
c9672ba4 229 strbuf_realpath(&text, git_dir, 1);
3efd0bed
NTND
230 strbuf_add(&pattern, cond, cond_len);
231 prefix = prepare_include_condition_pattern(&pattern);
232
0624c63c 233again:
3efd0bed
NTND
234 if (prefix < 0)
235 goto done;
236
237 if (prefix > 0) {
238 /*
239 * perform literal matching on the prefix part so that
240 * any wildcard character in it can't create side effects.
241 */
242 if (text.len < prefix)
243 goto done;
244 if (!icase && strncmp(pattern.buf, text.buf, prefix))
245 goto done;
246 if (icase && strncasecmp(pattern.buf, text.buf, prefix))
247 goto done;
248 }
249
250 ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
19e7fdaa 251 WM_PATHNAME | (icase ? WM_CASEFOLD : 0));
3efd0bed 252
0624c63c
ÆAB
253 if (!ret && !already_tried_absolute) {
254 /*
255 * We've tried e.g. matching gitdir:~/work, but if
256 * ~/work is a symlink to /mnt/storage/work
257 * strbuf_realpath() will expand it, so the rule won't
258 * match. Let's match against a
259 * strbuf_add_absolute_path() version of the path,
260 * which'll do the right thing
261 */
262 strbuf_reset(&text);
263 strbuf_add_absolute_path(&text, git_dir);
264 already_tried_absolute = 1;
265 goto again;
266 }
3efd0bed
NTND
267done:
268 strbuf_release(&pattern);
269 strbuf_release(&text);
270 return ret;
271}
272
07b2c0ea
DL
273static int include_by_branch(const char *cond, size_t cond_len)
274{
275 int flags;
276 int ret;
277 struct strbuf pattern = STRBUF_INIT;
278 const char *refname = resolve_ref_unsafe("HEAD", 0, NULL, &flags);
279 const char *shortname;
280
281 if (!refname || !(flags & REF_ISSYMREF) ||
282 !skip_prefix(refname, "refs/heads/", &shortname))
283 return 0;
284
285 strbuf_add(&pattern, cond, cond_len);
286 add_trailing_starstar_for_dir(&pattern);
287 ret = !wildmatch(pattern.buf, shortname, WM_PATHNAME);
288 strbuf_release(&pattern);
289 return ret;
290}
291
2185fde5
NTND
292static int include_condition_is_true(const struct config_options *opts,
293 const char *cond, size_t cond_len)
3efd0bed
NTND
294{
295
296 if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
2185fde5 297 return include_by_gitdir(opts, cond, cond_len, 0);
3efd0bed 298 else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
2185fde5 299 return include_by_gitdir(opts, cond, cond_len, 1);
07b2c0ea
DL
300 else if (skip_prefix_mem(cond, cond_len, "onbranch:", &cond, &cond_len))
301 return include_by_branch(cond, cond_len);
3efd0bed
NTND
302
303 /* unknown conditionals are always false */
304 return 0;
305}
306
9b25a0b5
JK
307int git_config_include(const char *var, const char *value, void *data)
308{
309 struct config_include_data *inc = data;
3efd0bed
NTND
310 const char *cond, *key;
311 int cond_len;
9b25a0b5
JK
312 int ret;
313
314 /*
315 * Pass along all values, including "include" directives; this makes it
316 * possible to query information on the includes themselves.
317 */
318 ret = inc->fn(var, value, inc->data);
319 if (ret < 0)
320 return ret;
321
37007c3a 322 if (!strcmp(var, "include.path"))
9b25a0b5 323 ret = handle_path_include(value, inc);
3efd0bed
NTND
324
325 if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
2185fde5 326 (cond && include_condition_is_true(inc->opts, cond, cond_len)) &&
3efd0bed
NTND
327 !strcmp(key, "path"))
328 ret = handle_path_include(value, inc);
329
9b25a0b5
JK
330 return ret;
331}
332
2b64fc89
JK
333void git_config_push_parameter(const char *text)
334{
335 struct strbuf env = STRBUF_INIT;
336 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
d1f88498 337 if (old && *old) {
2b64fc89
JK
338 strbuf_addstr(&env, old);
339 strbuf_addch(&env, ' ');
340 }
341 sq_quote_buf(&env, text);
342 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
343 strbuf_release(&env);
344}
345
ee98df3f
JH
346static inline int iskeychar(int c)
347{
348 return isalnum(c) || c == '-';
349}
350
351/*
352 * Auxiliary function to sanity-check and split the key into the section
353 * identifier and variable name.
354 *
355 * Returns 0 on success, -1 when there is an invalid character in the key and
356 * -2 if there is no section name in the key.
357 *
358 * store_key - pointer to char* which will hold a copy of the key with
359 * lowercase section and variable name
360 * baselen - pointer to int which will hold the length of the
361 * section + subsection part, can be NULL
362 */
363static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
364{
365 int i, dot, baselen;
366 const char *last_dot = strrchr(key, '.');
367
368 /*
369 * Since "key" actually contains the section name and the real
370 * key name separated by a dot, we have to know where the dot is.
371 */
372
373 if (last_dot == NULL || last_dot == key) {
374 if (!quiet)
a769bfc7 375 error(_("key does not contain a section: %s"), key);
ee98df3f
JH
376 return -CONFIG_NO_SECTION_OR_NAME;
377 }
378
379 if (!last_dot[1]) {
380 if (!quiet)
a769bfc7 381 error(_("key does not contain variable name: %s"), key);
ee98df3f
JH
382 return -CONFIG_NO_SECTION_OR_NAME;
383 }
384
385 baselen = last_dot - key;
386 if (baselen_)
387 *baselen_ = baselen;
388
389 /*
390 * Validate the key and while at it, lower case it for matching.
391 */
392 if (store_key)
393 *store_key = xmallocz(strlen(key));
394
395 dot = 0;
396 for (i = 0; key[i]; i++) {
397 unsigned char c = key[i];
398 if (c == '.')
399 dot = 1;
400 /* Leave the extended basename untouched.. */
401 if (!dot || i > baselen) {
402 if (!iskeychar(c) ||
403 (i == baselen + 1 && !isalpha(c))) {
404 if (!quiet)
a769bfc7 405 error(_("invalid key: %s"), key);
ee98df3f
JH
406 goto out_free_ret_1;
407 }
408 c = tolower(c);
409 } else if (c == '\n') {
410 if (!quiet)
a769bfc7 411 error(_("invalid key (newline): %s"), key);
ee98df3f
JH
412 goto out_free_ret_1;
413 }
414 if (store_key)
415 (*store_key)[i] = c;
416 }
417
418 return 0;
419
420out_free_ret_1:
421 if (store_key) {
6a83d902 422 FREE_AND_NULL(*store_key);
ee98df3f
JH
423 }
424 return -CONFIG_INVALID_KEY;
425}
426
427int git_config_parse_key(const char *key, char **store_key, int *baselen)
428{
429 return git_config_parse_key_1(key, store_key, baselen, 0);
430}
431
432int git_config_key_is_valid(const char *key)
433{
434 return !git_config_parse_key_1(key, NULL, NULL, 1);
435}
436
2496844b
JK
437int git_config_parse_parameter(const char *text,
438 config_fn_t fn, void *data)
8b1fa778 439{
a789ca70 440 const char *value;
1274a155 441 char *canonical_name;
572e4f6a 442 struct strbuf **pair;
1274a155 443 int ret;
a789ca70 444
f77bccae 445 pair = strbuf_split_str(text, '=', 2);
c5d6350b 446 if (!pair[0])
a769bfc7 447 return error(_("bogus config parameter: %s"), text);
a789ca70
JH
448
449 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
572e4f6a 450 strbuf_setlen(pair[0], pair[0]->len - 1);
a789ca70
JH
451 value = pair[1] ? pair[1]->buf : "";
452 } else {
453 value = NULL;
454 }
455
572e4f6a
AR
456 strbuf_trim(pair[0]);
457 if (!pair[0]->len) {
458 strbuf_list_free(pair);
a769bfc7 459 return error(_("bogus config parameter: %s"), text);
8b1fa778 460 }
1274a155
JH
461
462 if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
463 ret = -1;
464 } else {
465 ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
466 free(canonical_name);
572e4f6a
AR
467 }
468 strbuf_list_free(pair);
1274a155 469 return ret;
8b1fa778
AR
470}
471
06eb708f
JK
472int git_config_from_parameters(config_fn_t fn, void *data)
473{
2b64fc89 474 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
a77d6db6 475 int ret = 0;
2b64fc89
JK
476 char *envw;
477 const char **argv = NULL;
478 int nr = 0, alloc = 0;
479 int i;
3258258f 480 struct config_source source;
2b64fc89
JK
481
482 if (!env)
483 return 0;
3258258f
JK
484
485 memset(&source, 0, sizeof(source));
486 source.prev = cf;
1b8132d9 487 source.origin_type = CONFIG_ORIGIN_CMDLINE;
3258258f
JK
488 cf = &source;
489
2b64fc89
JK
490 /* sq_dequote will write over it */
491 envw = xstrdup(env);
492
493 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
a769bfc7 494 ret = error(_("bogus format in %s"), CONFIG_DATA_ENVIRONMENT);
a77d6db6 495 goto out;
2b64fc89
JK
496 }
497
498 for (i = 0; i < nr; i++) {
06eb708f 499 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
a77d6db6
JK
500 ret = -1;
501 goto out;
2b64fc89
JK
502 }
503 }
504
a77d6db6 505out:
2b64fc89
JK
506 free(argv);
507 free(envw);
3258258f 508 cf = source.prev;
a77d6db6 509 return ret;
2b64fc89
JK
510}
511
17712991
LT
512static int get_next_char(void)
513{
49d6cfa5 514 int c = cf->do_fgetc(cf);
17712991 515
dbb9a812
HV
516 if (c == '\r') {
517 /* DOS like systems */
49d6cfa5 518 c = cf->do_fgetc(cf);
dbb9a812 519 if (c != '\n') {
5e0be134
JK
520 if (c != EOF)
521 cf->do_ungetc(c, cf);
dbb9a812 522 c = '\r';
17712991
LT
523 }
524 }
dbb9a812
HV
525 if (c == '\n')
526 cf->linenr++;
527 if (c == EOF) {
528 cf->eof = 1;
b3b3f60b 529 cf->linenr++;
dbb9a812
HV
530 c = '\n';
531 }
17712991
LT
532 return c;
533}
534
535static char *parse_value(void)
536{
e96c19c5 537 int quote = 0, comment = 0, space = 0;
17712991 538
924aaf3e 539 strbuf_reset(&cf->value);
17712991
LT
540 for (;;) {
541 int c = get_next_char();
17712991 542 if (c == '\n') {
4b340593
MS
543 if (quote) {
544 cf->linenr--;
17712991 545 return NULL;
4b340593 546 }
924aaf3e 547 return cf->value.buf;
17712991
LT
548 }
549 if (comment)
550 continue;
551 if (isspace(c) && !quote) {
924aaf3e 552 if (cf->value.len)
ebdaae37 553 space++;
17712991
LT
554 continue;
555 }
7ebdba61
JS
556 if (!quote) {
557 if (c == ';' || c == '#') {
558 comment = 1;
559 continue;
560 }
561 }
ebdaae37 562 for (; space; space--)
924aaf3e 563 strbuf_addch(&cf->value, ' ');
17712991
LT
564 if (c == '\\') {
565 c = get_next_char();
566 switch (c) {
567 case '\n':
568 continue;
569 case 't':
570 c = '\t';
571 break;
572 case 'b':
573 c = '\b';
574 break;
575 case 'n':
576 c = '\n';
577 break;
5cbb401d
LT
578 /* Some characters escape as themselves */
579 case '\\': case '"':
580 break;
581 /* Reject unknown escape sequences */
582 default:
583 return NULL;
17712991 584 }
924aaf3e 585 strbuf_addch(&cf->value, c);
17712991
LT
586 continue;
587 }
588 if (c == '"') {
589 quote = 1-quote;
590 continue;
591 }
924aaf3e 592 strbuf_addch(&cf->value, c);
17712991
LT
593 }
594}
595
0971e992 596static int get_value(config_fn_t fn, void *data, struct strbuf *name)
17712991
LT
597{
598 int c;
599 char *value;
b3b3f60b 600 int ret;
17712991
LT
601
602 /* Get the full name */
603 for (;;) {
604 c = get_next_char();
924aaf3e 605 if (cf->eof)
17712991 606 break;
38c5afa8 607 if (!iskeychar(c))
17712991 608 break;
0971e992 609 strbuf_addch(name, tolower(c));
17712991 610 }
0971e992 611
17712991
LT
612 while (c == ' ' || c == '\t')
613 c = get_next_char();
614
615 value = NULL;
616 if (c != '\n') {
617 if (c != '=')
618 return -1;
619 value = parse_value();
620 if (!value)
621 return -1;
622 }
b3b3f60b
MM
623 /*
624 * We already consumed the \n, but we need linenr to point to
625 * the line we just parsed during the call to fn to get
626 * accurate line number in error messages.
627 */
628 cf->linenr--;
629 ret = fn(name->buf, value, data);
e2e14251
JS
630 if (ret >= 0)
631 cf->linenr++;
b3b3f60b 632 return ret;
17712991
LT
633}
634
0971e992 635static int get_extended_base_var(struct strbuf *name, int c)
d14f7764 636{
2d84f13d 637 cf->subsection_case_sensitive = 0;
d14f7764
LT
638 do {
639 if (c == '\n')
4b340593 640 goto error_incomplete_line;
d14f7764
LT
641 c = get_next_char();
642 } while (isspace(c));
643
644 /* We require the format to be '[base "extension"]' */
645 if (c != '"')
646 return -1;
0971e992 647 strbuf_addch(name, '.');
d14f7764
LT
648
649 for (;;) {
650 int c = get_next_char();
651 if (c == '\n')
4b340593 652 goto error_incomplete_line;
d14f7764
LT
653 if (c == '"')
654 break;
655 if (c == '\\') {
656 c = get_next_char();
657 if (c == '\n')
4b340593 658 goto error_incomplete_line;
d14f7764 659 }
0971e992 660 strbuf_addch(name, c);
d14f7764
LT
661 }
662
663 /* Final ']' */
664 if (get_next_char() != ']')
665 return -1;
0971e992 666 return 0;
4b340593
MS
667error_incomplete_line:
668 cf->linenr--;
669 return -1;
d14f7764
LT
670}
671
0971e992 672static int get_base_var(struct strbuf *name)
17712991 673{
2d84f13d 674 cf->subsection_case_sensitive = 1;
17712991
LT
675 for (;;) {
676 int c = get_next_char();
924aaf3e 677 if (cf->eof)
17712991
LT
678 return -1;
679 if (c == ']')
0971e992 680 return 0;
d14f7764 681 if (isspace(c))
0971e992 682 return get_extended_base_var(name, c);
38c5afa8 683 if (!iskeychar(c) && c != '.')
17712991 684 return -1;
0971e992 685 strbuf_addch(name, tolower(c));
17712991
LT
686 }
687}
688
8032cc44
JS
689struct parse_event_data {
690 enum config_event_t previous_type;
691 size_t previous_offset;
692 const struct config_options *opts;
693};
694
695static int do_event(enum config_event_t type, struct parse_event_data *data)
696{
697 size_t offset;
698
699 if (!data->opts || !data->opts->event_fn)
700 return 0;
701
702 if (type == CONFIG_EVENT_WHITESPACE &&
703 data->previous_type == type)
704 return 0;
705
706 offset = cf->do_ftell(cf);
707 /*
708 * At EOF, the parser always "inserts" an extra '\n', therefore
709 * the end offset of the event is the current file position, otherwise
710 * we will already have advanced to the next event.
711 */
712 if (type != CONFIG_EVENT_EOF)
713 offset--;
714
715 if (data->previous_type != CONFIG_EVENT_EOF &&
716 data->opts->event_fn(data->previous_type, data->previous_offset,
717 offset, data->opts->event_fn_data) < 0)
718 return -1;
719
720 data->previous_type = type;
721 data->previous_offset = offset;
722
723 return 0;
724}
725
726static int git_parse_source(config_fn_t fn, void *data,
727 const struct config_options *opts)
17712991
LT
728{
729 int comment = 0;
730 int baselen = 0;
0971e992 731 struct strbuf *var = &cf->var;
1b8132d9
VA
732 int error_return = 0;
733 char *error_msg = NULL;
17712991 734
de056402 735 /* U+FEFF Byte Order Mark in UTF8 */
599446dc 736 const char *bomptr = utf8_bom;
de056402 737
8032cc44
JS
738 /* For the parser event callback */
739 struct parse_event_data event_data = {
740 CONFIG_EVENT_EOF, 0, opts
741 };
742
17712991 743 for (;;) {
8032cc44
JS
744 int c;
745
746 c = get_next_char();
de056402
PB
747 if (bomptr && *bomptr) {
748 /* We are at the file beginning; skip UTF8-encoded BOM
749 * if present. Sane editors won't put this in on their
750 * own, but e.g. Windows Notepad will do it happily. */
599446dc 751 if (c == (*bomptr & 0377)) {
de056402
PB
752 bomptr++;
753 continue;
754 } else {
755 /* Do not tolerate partial BOM. */
756 if (bomptr != utf8_bom)
757 break;
758 /* No BOM at file beginning. Cool. */
759 bomptr = NULL;
760 }
761 }
17712991 762 if (c == '\n') {
8032cc44
JS
763 if (cf->eof) {
764 if (do_event(CONFIG_EVENT_EOF, &event_data) < 0)
765 return -1;
17712991 766 return 0;
8032cc44
JS
767 }
768 if (do_event(CONFIG_EVENT_WHITESPACE, &event_data) < 0)
769 return -1;
17712991
LT
770 comment = 0;
771 continue;
772 }
8032cc44 773 if (comment)
17712991 774 continue;
8032cc44
JS
775 if (isspace(c)) {
776 if (do_event(CONFIG_EVENT_WHITESPACE, &event_data) < 0)
777 return -1;
17712991 778 continue;
8032cc44 779 }
17712991 780 if (c == '#' || c == ';') {
8032cc44
JS
781 if (do_event(CONFIG_EVENT_COMMENT, &event_data) < 0)
782 return -1;
17712991
LT
783 comment = 1;
784 continue;
785 }
786 if (c == '[') {
8032cc44
JS
787 if (do_event(CONFIG_EVENT_SECTION, &event_data) < 0)
788 return -1;
789
0971e992
BW
790 /* Reset prior to determining a new stem */
791 strbuf_reset(var);
792 if (get_base_var(var) < 0 || var->len < 1)
17712991 793 break;
0971e992
BW
794 strbuf_addch(var, '.');
795 baselen = var->len;
17712991
LT
796 continue;
797 }
798 if (!isalpha(c))
799 break;
8032cc44
JS
800
801 if (do_event(CONFIG_EVENT_ENTRY, &event_data) < 0)
802 return -1;
803
0971e992
BW
804 /*
805 * Truncate the var name back to the section header
806 * stem prior to grabbing the suffix part of the name
807 * and the value.
808 */
809 strbuf_setlen(var, baselen);
810 strbuf_addch(var, tolower(c));
811 if (get_value(fn, data, var) < 0)
17712991
LT
812 break;
813 }
1b8132d9 814
8032cc44
JS
815 if (do_event(CONFIG_EVENT_ERROR, &event_data) < 0)
816 return -1;
817
1b8132d9
VA
818 switch (cf->origin_type) {
819 case CONFIG_ORIGIN_BLOB:
820 error_msg = xstrfmt(_("bad config line %d in blob %s"),
821 cf->linenr, cf->name);
822 break;
823 case CONFIG_ORIGIN_FILE:
824 error_msg = xstrfmt(_("bad config line %d in file %s"),
825 cf->linenr, cf->name);
826 break;
827 case CONFIG_ORIGIN_STDIN:
828 error_msg = xstrfmt(_("bad config line %d in standard input"),
829 cf->linenr);
830 break;
831 case CONFIG_ORIGIN_SUBMODULE_BLOB:
832 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
833 cf->linenr, cf->name);
834 break;
835 case CONFIG_ORIGIN_CMDLINE:
836 error_msg = xstrfmt(_("bad config line %d in command line %s"),
837 cf->linenr, cf->name);
838 break;
839 default:
840 error_msg = xstrfmt(_("bad config line %d in %s"),
841 cf->linenr, cf->name);
842 }
843
66f97228
JK
844 switch (opts && opts->error_action ?
845 opts->error_action :
846 cf->default_error_action) {
847 case CONFIG_ERROR_DIE:
1b8132d9 848 die("%s", error_msg);
66f97228
JK
849 break;
850 case CONFIG_ERROR_ERROR:
1b8132d9 851 error_return = error("%s", error_msg);
66f97228 852 break;
63583203
JK
853 case CONFIG_ERROR_SILENT:
854 error_return = -1;
855 break;
66f97228
JK
856 case CONFIG_ERROR_UNSET:
857 BUG("config error action unset");
858 }
1b8132d9
VA
859
860 free(error_msg);
861 return error_return;
17712991
LT
862}
863
39c575c9 864static uintmax_t get_unit_factor(const char *end)
0b87b6e0
BD
865{
866 if (!*end)
867 return 1;
39c575c9
RS
868 else if (!strcasecmp(end, "k"))
869 return 1024;
870 else if (!strcasecmp(end, "m"))
871 return 1024 * 1024;
872 else if (!strcasecmp(end, "g"))
873 return 1024 * 1024 * 1024;
c8deb5a1 874 return 0;
0b87b6e0
BD
875}
876
7192777d 877static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
878{
879 if (value && *value) {
880 char *end;
ebaa1bd4
NA
881 intmax_t val;
882 uintmax_t uval;
664178e8 883 uintmax_t factor;
ebaa1bd4
NA
884
885 errno = 0;
886 val = strtoimax(value, &end, 0);
887 if (errno == ERANGE)
888 return 0;
39c575c9
RS
889 factor = get_unit_factor(end);
890 if (!factor) {
33fdd77e 891 errno = EINVAL;
c8deb5a1 892 return 0;
33fdd77e 893 }
9dae4fe7 894 uval = val < 0 ? -val : val;
3fb72c7b
RS
895 if (unsigned_mult_overflows(factor, uval) ||
896 factor * uval > max) {
33fdd77e 897 errno = ERANGE;
ebaa1bd4 898 return 0;
33fdd77e 899 }
ebaa1bd4
NA
900 val *= factor;
901 *ret = val;
0b87b6e0
BD
902 return 1;
903 }
33fdd77e 904 errno = EINVAL;
0b87b6e0
BD
905 return 0;
906}
907
0b4dc661 908static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
909{
910 if (value && *value) {
911 char *end;
ebaa1bd4 912 uintmax_t val;
664178e8 913 uintmax_t factor;
ebaa1bd4
NA
914
915 errno = 0;
916 val = strtoumax(value, &end, 0);
917 if (errno == ERANGE)
918 return 0;
39c575c9
RS
919 factor = get_unit_factor(end);
920 if (!factor) {
33fdd77e 921 errno = EINVAL;
c8deb5a1 922 return 0;
33fdd77e 923 }
3fb72c7b
RS
924 if (unsigned_mult_overflows(factor, val) ||
925 factor * val > max) {
33fdd77e 926 errno = ERANGE;
ebaa1bd4 927 return 0;
33fdd77e 928 }
3fb72c7b 929 val *= factor;
c8deb5a1 930 *ret = val;
0b87b6e0 931 return 1;
17712991 932 }
33fdd77e 933 errno = EINVAL;
0b87b6e0
BD
934 return 0;
935}
936
42d194e9 937static int git_parse_int(const char *value, int *ret)
c1867cea 938{
7192777d 939 intmax_t tmp;
42d194e9 940 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
941 return 0;
942 *ret = tmp;
943 return 1;
944}
945
00160242
JK
946static int git_parse_int64(const char *value, int64_t *ret)
947{
948 intmax_t tmp;
949 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
950 return 0;
951 *ret = tmp;
952 return 1;
953}
954
7192777d
JK
955int git_parse_ulong(const char *value, unsigned long *ret)
956{
957 uintmax_t tmp;
958 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
959 return 0;
960 *ret = tmp;
961 return 1;
962}
963
c79edf73 964int git_parse_ssize_t(const char *value, ssize_t *ret)
37ee680d
DT
965{
966 intmax_t tmp;
967 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
968 return 0;
969 *ret = tmp;
970 return 1;
971}
972
06bdc23b 973NORETURN
2f666581 974static void die_bad_number(const char *name, const char *value)
c1867cea 975{
078fe305
JNA
976 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
977
2f666581
JK
978 if (!value)
979 value = "";
980
1b8132d9 981 if (!(cf && cf->name))
078fe305
JNA
982 die(_("bad numeric config value '%s' for '%s': %s"),
983 value, name, error_type);
1b8132d9
VA
984
985 switch (cf->origin_type) {
986 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
987 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
988 value, name, cf->name, error_type);
1b8132d9 989 case CONFIG_ORIGIN_FILE:
078fe305
JNA
990 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
991 value, name, cf->name, error_type);
1b8132d9 992 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
993 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
994 value, name, error_type);
1b8132d9 995 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
996 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
997 value, name, cf->name, error_type);
1b8132d9 998 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
999 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
1000 value, name, cf->name, error_type);
1b8132d9 1001 default:
078fe305
JNA
1002 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
1003 value, name, cf->name, error_type);
1b8132d9 1004 }
c1867cea
JK
1005}
1006
0b87b6e0
BD
1007int git_config_int(const char *name, const char *value)
1008{
42d194e9
JK
1009 int ret;
1010 if (!git_parse_int(value, &ret))
2f666581 1011 die_bad_number(name, value);
0b87b6e0
BD
1012 return ret;
1013}
1014
00160242
JK
1015int64_t git_config_int64(const char *name, const char *value)
1016{
1017 int64_t ret;
1018 if (!git_parse_int64(value, &ret))
1019 die_bad_number(name, value);
0b87b6e0
BD
1020 return ret;
1021}
1022
1023unsigned long git_config_ulong(const char *name, const char *value)
1024{
1025 unsigned long ret;
1026 if (!git_parse_ulong(value, &ret))
2f666581 1027 die_bad_number(name, value);
0b87b6e0 1028 return ret;
17712991
LT
1029}
1030
37ee680d
DT
1031ssize_t git_config_ssize_t(const char *name, const char *value)
1032{
1033 ssize_t ret;
1034 if (!git_parse_ssize_t(value, &ret))
1035 die_bad_number(name, value);
1036 return ret;
1037}
1038
9be04d64 1039static int git_parse_maybe_bool_text(const char *value)
17712991
LT
1040{
1041 if (!value)
1042 return 1;
1043 if (!*value)
1044 return 0;
8420ccd8
JH
1045 if (!strcasecmp(value, "true")
1046 || !strcasecmp(value, "yes")
1047 || !strcasecmp(value, "on"))
17712991 1048 return 1;
8420ccd8
JH
1049 if (!strcasecmp(value, "false")
1050 || !strcasecmp(value, "no")
1051 || !strcasecmp(value, "off"))
17712991 1052 return 0;
8420ccd8
JH
1053 return -1;
1054}
1055
9be04d64 1056int git_parse_maybe_bool(const char *value)
b2be2f6a 1057{
9be04d64 1058 int v = git_parse_maybe_bool_text(value);
b2be2f6a
JK
1059 if (0 <= v)
1060 return v;
42d194e9 1061 if (git_parse_int(value, &v))
db6195ef 1062 return !!v;
b2be2f6a
JK
1063 return -1;
1064}
1065
8420ccd8
JH
1066int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
1067{
9be04d64 1068 int v = git_parse_maybe_bool_text(value);
8420ccd8
JH
1069 if (0 <= v) {
1070 *is_bool = 1;
1071 return v;
1072 }
a53f2ec6 1073 *is_bool = 0;
c35b0b58 1074 return git_config_int(name, value);
17712991
LT
1075}
1076
a53f2ec6
JH
1077int git_config_bool(const char *name, const char *value)
1078{
1079 int discard;
c35b0b58 1080 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
1081}
1082
ea5105a5
CC
1083int git_config_string(const char **dest, const char *var, const char *value)
1084{
1085 if (!value)
1086 return config_error_nonbool(var);
1087 *dest = xstrdup(value);
1088 return 0;
1089}
1090
395de250
MM
1091int git_config_pathname(const char **dest, const char *var, const char *value)
1092{
1093 if (!value)
1094 return config_error_nonbool(var);
4aad2f16 1095 *dest = expand_user_path(value, 0);
395de250 1096 if (!*dest)
8262aaa2 1097 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
1098 return 0;
1099}
1100
5f967424
HM
1101int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *value)
1102{
1103 if (!value)
1104 return config_error_nonbool(var);
1105 if (parse_expiry_date(value, timestamp))
1106 return error(_("'%s' for '%s' is not a valid timestamp"),
1107 value, var);
1108 return 0;
1109}
1110
6d2f9acc
TB
1111int git_config_color(char *dest, const char *var, const char *value)
1112{
1113 if (!value)
1114 return config_error_nonbool(var);
1115 if (color_parse(value, dest) < 0)
1116 return -1;
1117 return 0;
1118}
1119
70fc5793 1120static int git_default_core_config(const char *var, const char *value, void *cb)
17712991
LT
1121{
1122 /* This needs a better name */
1123 if (!strcmp(var, "core.filemode")) {
1124 trust_executable_bit = git_config_bool(var, value);
1125 return 0;
1126 }
1ce4790b
AR
1127 if (!strcmp(var, "core.trustctime")) {
1128 trust_ctime = git_config_bool(var, value);
1129 return 0;
1130 }
c1b5d738 1131 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
1132 if (!strcasecmp(value, "default"))
1133 check_stat = 1;
1134 else if (!strcasecmp(value, "minimal"))
1135 check_stat = 0;
1136 }
17712991 1137
9378c161
JH
1138 if (!strcmp(var, "core.quotepath")) {
1139 quote_path_fully = git_config_bool(var, value);
1140 return 0;
1141 }
1142
78a8d641
JS
1143 if (!strcmp(var, "core.symlinks")) {
1144 has_symlinks = git_config_bool(var, value);
1145 return 0;
1146 }
1147
0a9b88b7
LT
1148 if (!strcmp(var, "core.ignorecase")) {
1149 ignore_case = git_config_bool(var, value);
1150 return 0;
1151 }
1152
64589a03
JH
1153 if (!strcmp(var, "core.attributesfile"))
1154 return git_config_pathname(&git_attributes_file, var, value);
1155
867ad08a
ÆAB
1156 if (!strcmp(var, "core.hookspath"))
1157 return git_config_pathname(&git_hooks_path, var, value);
1158
7d1864ce
JH
1159 if (!strcmp(var, "core.bare")) {
1160 is_bare_repository_cfg = git_config_bool(var, value);
1161 return 0;
1162 }
1163
5f73076c
JH
1164 if (!strcmp(var, "core.ignorestat")) {
1165 assume_unchanged = git_config_bool(var, value);
1166 return 0;
1167 }
1168
e388c738
JH
1169 if (!strcmp(var, "core.prefersymlinkrefs")) {
1170 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
1171 return 0;
1172 }
1173
6de08ae6 1174 if (!strcmp(var, "core.logallrefupdates")) {
341fb286
CW
1175 if (value && !strcasecmp(value, "always"))
1176 log_all_ref_updates = LOG_REFS_ALWAYS;
1177 else if (git_config_bool(var, value))
1178 log_all_ref_updates = LOG_REFS_NORMAL;
1179 else
1180 log_all_ref_updates = LOG_REFS_NONE;
6de08ae6
SP
1181 return 0;
1182 }
1183
2f8acdb3
JH
1184 if (!strcmp(var, "core.warnambiguousrefs")) {
1185 warn_ambiguous_refs = git_config_bool(var, value);
1186 return 0;
1187 }
1188
a71f09fe 1189 if (!strcmp(var, "core.abbrev")) {
48d5014d
JH
1190 if (!value)
1191 return config_error_nonbool(var);
1192 if (!strcasecmp(value, "auto"))
1193 default_abbrev = -1;
1194 else {
1195 int abbrev = git_config_int(var, value);
1196 if (abbrev < minimum_abbrev || abbrev > 40)
a769bfc7 1197 return error(_("abbrev length out of range: %d"), abbrev);
48d5014d
JH
1198 default_abbrev = abbrev;
1199 }
dce96489
LT
1200 return 0;
1201 }
1202
5b33cb1f
JK
1203 if (!strcmp(var, "core.disambiguate"))
1204 return set_disambiguate_hint_config(var, value);
1205
960ccca6 1206 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
1207 int level = git_config_int(var, value);
1208 if (level == -1)
1209 level = Z_DEFAULT_COMPRESSION;
1210 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1211 die(_("bad zlib compression level %d"), level);
12f6c308 1212 zlib_compression_level = level;
960ccca6
DH
1213 zlib_compression_seen = 1;
1214 return 0;
1215 }
1216
1217 if (!strcmp(var, "core.compression")) {
1218 int level = git_config_int(var, value);
1219 if (level == -1)
1220 level = Z_DEFAULT_COMPRESSION;
1221 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1222 die(_("bad zlib compression level %d"), level);
960ccca6
DH
1223 core_compression_level = level;
1224 core_compression_seen = 1;
1225 if (!zlib_compression_seen)
1226 zlib_compression_level = level;
8de7eeb5
JH
1227 if (!pack_compression_seen)
1228 pack_compression_level = level;
12f6c308
JBH
1229 return 0;
1230 }
1231
60bb8b14 1232 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 1233 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 1234 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
1235
1236 /* This value must be multiple of (pagesize * 2) */
1237 packed_git_window_size /= pgsz_x2;
1238 if (packed_git_window_size < 1)
1239 packed_git_window_size = 1;
1240 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
1241 return 0;
1242 }
1243
15366280 1244 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 1245 big_file_threshold = git_config_ulong(var, value);
15366280
JH
1246 return 0;
1247 }
1248
77ccc5bb 1249 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 1250 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
1251 return 0;
1252 }
1253
18bdec11 1254 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 1255 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
1256 return 0;
1257 }
1258
6c510bee 1259 if (!strcmp(var, "core.autocrlf")) {
d7f46334 1260 if (value && !strcasecmp(value, "input")) {
fd6cce9e 1261 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
1262 return 0;
1263 }
6c510bee
LT
1264 auto_crlf = git_config_bool(var, value);
1265 return 0;
1266 }
1267
21e5ad50 1268 if (!strcmp(var, "core.safecrlf")) {
8462ff43 1269 int eol_rndtrp_die;
21e5ad50 1270 if (value && !strcasecmp(value, "warn")) {
8462ff43 1271 global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
21e5ad50
SP
1272 return 0;
1273 }
8462ff43
TB
1274 eol_rndtrp_die = git_config_bool(var, value);
1275 global_conv_flags_eol = eol_rndtrp_die ?
6cb09125 1276 CONV_EOL_RNDTRP_DIE : 0;
21e5ad50
SP
1277 return 0;
1278 }
1279
942e7747
EB
1280 if (!strcmp(var, "core.eol")) {
1281 if (value && !strcasecmp(value, "lf"))
ec70f52f 1282 core_eol = EOL_LF;
942e7747 1283 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 1284 core_eol = EOL_CRLF;
942e7747 1285 else if (value && !strcasecmp(value, "native"))
ec70f52f 1286 core_eol = EOL_NATIVE;
942e7747 1287 else
ec70f52f 1288 core_eol = EOL_UNSET;
942e7747
EB
1289 return 0;
1290 }
1291
e92d6225
LS
1292 if (!strcmp(var, "core.checkroundtripencoding")) {
1293 check_roundtrip_encoding = xstrdup(value);
1294 return 0;
1295 }
1296
a97a7468
JS
1297 if (!strcmp(var, "core.notesref")) {
1298 notes_ref_name = xstrdup(value);
1299 return 0;
1300 }
1301
806e2ad7
LT
1302 if (!strcmp(var, "core.editor"))
1303 return git_config_string(&editor_program, var, value);
1304
eff80a9f 1305 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
1306 if (!value)
1307 return config_error_nonbool(var);
ad524f83 1308 else if (!strcasecmp(value, "auto"))
84c9dc2c 1309 auto_comment_line_char = 1;
ad524f83 1310 else if (value[0] && !value[1]) {
649409b7 1311 comment_line_char = value[0];
84c9dc2c 1312 auto_comment_line_char = 0;
50b54fd7 1313 } else
a769bfc7 1314 return error(_("core.commentChar should only be one character"));
50b54fd7 1315 return 0;
eff80a9f
JH
1316 }
1317
d3e7da89
AK
1318 if (!strcmp(var, "core.askpass"))
1319 return git_config_string(&askpass_program, var, value);
1320
806e2ad7 1321 if (!strcmp(var, "core.excludesfile"))
395de250 1322 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
1323
1324 if (!strcmp(var, "core.whitespace")) {
1325 if (!value)
1326 return config_error_nonbool(var);
1327 whitespace_rule_cfg = parse_whitespace_rule(value);
1328 return 0;
1329 }
1330
aafe9fba
LT
1331 if (!strcmp(var, "core.fsyncobjectfiles")) {
1332 fsync_object_files = git_config_bool(var, value);
1333 return 0;
1334 }
1335
671c9b7e
LT
1336 if (!strcmp(var, "core.preloadindex")) {
1337 core_preload_index = git_config_bool(var, value);
1338 return 0;
1339 }
1340
348df166
JS
1341 if (!strcmp(var, "core.createobject")) {
1342 if (!strcmp(value, "rename"))
1343 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1344 else if (!strcmp(value, "link"))
1345 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1346 else
8262aaa2 1347 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
1348 return 0;
1349 }
1350
08aefc9e
NTND
1351 if (!strcmp(var, "core.sparsecheckout")) {
1352 core_apply_sparse_checkout = git_config_bool(var, value);
1353 return 0;
1354 }
1355
76759c7d
TB
1356 if (!strcmp(var, "core.precomposeunicode")) {
1357 precomposed_unicode = git_config_bool(var, value);
1358 return 0;
1359 }
1360
a42643aa
JK
1361 if (!strcmp(var, "core.protecthfs")) {
1362 protect_hfs = git_config_bool(var, value);
1363 return 0;
1364 }
1365
2b4c6efc
JS
1366 if (!strcmp(var, "core.protectntfs")) {
1367 protect_ntfs = git_config_bool(var, value);
1368 return 0;
76759c7d
TB
1369 }
1370
1e1e39b3
JH
1371 if (!strcmp(var, "core.partialclonefilter")) {
1372 return git_config_string(&core_partial_clone_filter_default,
1373 var, value);
1374 }
1375
da4398d6
JK
1376 if (!strcmp(var, "core.usereplacerefs")) {
1377 read_replace_refs = git_config_bool(var, value);
1378 return 0;
1379 }
1380
806e2ad7 1381 /* Add other config variables here and to Documentation/config.txt. */
70fc5793 1382 return platform_core_config(var, value, cb);
806e2ad7
LT
1383}
1384
1141f492 1385static int git_default_i18n_config(const char *var, const char *value)
d1364529 1386{
ea5105a5
CC
1387 if (!strcmp(var, "i18n.commitencoding"))
1388 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1389
ea5105a5
CC
1390 if (!strcmp(var, "i18n.logoutputencoding"))
1391 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1392
1141f492
LT
1393 /* Add other config variables here and to Documentation/config.txt. */
1394 return 0;
1395}
039bc64e 1396
1141f492
LT
1397static int git_default_branch_config(const char *var, const char *value)
1398{
9ed36cfa
JS
1399 if (!strcmp(var, "branch.autosetupmerge")) {
1400 if (value && !strcasecmp(value, "always")) {
1401 git_branch_track = BRANCH_TRACK_ALWAYS;
1402 return 0;
1403 }
1404 git_branch_track = git_config_bool(var, value);
1405 return 0;
1406 }
c998ae9b
DS
1407 if (!strcmp(var, "branch.autosetuprebase")) {
1408 if (!value)
1409 return config_error_nonbool(var);
1410 else if (!strcmp(value, "never"))
1411 autorebase = AUTOREBASE_NEVER;
1412 else if (!strcmp(value, "local"))
1413 autorebase = AUTOREBASE_LOCAL;
1414 else if (!strcmp(value, "remote"))
1415 autorebase = AUTOREBASE_REMOTE;
1416 else if (!strcmp(value, "always"))
1417 autorebase = AUTOREBASE_ALWAYS;
1418 else
a769bfc7 1419 return error(_("malformed value for %s"), var);
c998ae9b
DS
1420 return 0;
1421 }
a9cc857a 1422
1ab661dd 1423 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1424 return 0;
1425}
1426
52153747
FAG
1427static int git_default_push_config(const char *var, const char *value)
1428{
1429 if (!strcmp(var, "push.default")) {
1430 if (!value)
1431 return config_error_nonbool(var);
1432 else if (!strcmp(value, "nothing"))
1433 push_default = PUSH_DEFAULT_NOTHING;
1434 else if (!strcmp(value, "matching"))
1435 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1436 else if (!strcmp(value, "simple"))
1437 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1438 else if (!strcmp(value, "upstream"))
1439 push_default = PUSH_DEFAULT_UPSTREAM;
1440 else if (!strcmp(value, "tracking")) /* deprecated */
1441 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1442 else if (!strcmp(value, "current"))
1443 push_default = PUSH_DEFAULT_CURRENT;
1444 else {
a769bfc7
NTND
1445 error(_("malformed value for %s: %s"), var, value);
1446 return error(_("must be one of nothing, matching, simple, "
1447 "upstream or current"));
52153747
FAG
1448 }
1449 return 0;
1450 }
1451
1452 /* Add other config variables here and to Documentation/config.txt. */
1453 return 0;
1454}
1455
d551a488
MSO
1456static int git_default_mailmap_config(const char *var, const char *value)
1457{
1458 if (!strcmp(var, "mailmap.file"))
9352fd57 1459 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1460 if (!strcmp(var, "mailmap.blob"))
1461 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1462
1463 /* Add other config variables here and to Documentation/config.txt. */
1464 return 0;
1465}
1466
409670f3 1467int git_default_config(const char *var, const char *value, void *cb)
1141f492 1468{
59556548 1469 if (starts_with(var, "core."))
70fc5793 1470 return git_default_core_config(var, value, cb);
1141f492 1471
39ab4d09
WH
1472 if (starts_with(var, "user.") ||
1473 starts_with(var, "author.") ||
1474 starts_with(var, "committer."))
409670f3 1475 return git_ident_config(var, value, cb);
1141f492 1476
59556548 1477 if (starts_with(var, "i18n."))
1141f492
LT
1478 return git_default_i18n_config(var, value);
1479
59556548 1480 if (starts_with(var, "branch."))
1141f492
LT
1481 return git_default_branch_config(var, value);
1482
59556548 1483 if (starts_with(var, "push."))
52153747
FAG
1484 return git_default_push_config(var, value);
1485
59556548 1486 if (starts_with(var, "mailmap."))
d551a488
MSO
1487 return git_default_mailmap_config(var, value);
1488
960786e7 1489 if (starts_with(var, "advice.") || starts_with(var, "color.advice"))
75194438
JK
1490 return git_default_advice_config(var, value);
1491
1141f492
LT
1492 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1493 pager_use_color = git_config_bool(var,value);
1494 return 0;
1495 }
1496
568508e7
JH
1497 if (!strcmp(var, "pack.packsizelimit")) {
1498 pack_size_limit_cfg = git_config_ulong(var, value);
1499 return 0;
1500 }
8de7eeb5
JH
1501
1502 if (!strcmp(var, "pack.compression")) {
1503 int level = git_config_int(var, value);
1504 if (level == -1)
1505 level = Z_DEFAULT_COMPRESSION;
1506 else if (level < 0 || level > Z_BEST_COMPRESSION)
1507 die(_("bad pack compression level %d"), level);
1508 pack_compression_level = level;
1509 pack_compression_seen = 1;
1510 return 0;
1511 }
1512
1141f492
LT
1513 /* Add other config variables here and to Documentation/config.txt. */
1514 return 0;
1515}
1516
ca4b5de2 1517/*
b2dc0945 1518 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1519 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1520 * this function.
1521 */
8032cc44
JS
1522static int do_config_from(struct config_source *top, config_fn_t fn, void *data,
1523 const struct config_options *opts)
ca4b5de2
HV
1524{
1525 int ret;
1526
1527 /* push config-file parsing state stack */
1528 top->prev = cf;
1529 top->linenr = 1;
1530 top->eof = 0;
1531 strbuf_init(&top->value, 1024);
1532 strbuf_init(&top->var, 1024);
1533 cf = top;
1534
8032cc44 1535 ret = git_parse_source(fn, data, opts);
ca4b5de2
HV
1536
1537 /* pop config-file parsing state stack */
1538 strbuf_release(&top->value);
1539 strbuf_release(&top->var);
1540 cf = top->prev;
1541
1542 return ret;
1543}
1544
3caec73b 1545static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1546 const enum config_origin_type origin_type,
1547 const char *name, const char *path, FILE *f,
8032cc44 1548 void *data, const struct config_options *opts)
17712991 1549{
3caec73b 1550 struct config_source top;
05e293c1 1551 int ret;
17712991 1552
3caec73b 1553 top.u.file = f;
473166b9 1554 top.origin_type = origin_type;
3caec73b
KS
1555 top.name = name;
1556 top.path = path;
66f97228 1557 top.default_error_action = CONFIG_ERROR_DIE;
3caec73b
KS
1558 top.do_fgetc = config_file_fgetc;
1559 top.do_ungetc = config_file_ungetc;
1560 top.do_ftell = config_file_ftell;
924aaf3e 1561
05e293c1 1562 flockfile(f);
4f4d0b42 1563 ret = do_config_from(&top, fn, data, opts);
05e293c1
JK
1564 funlockfile(f);
1565 return ret;
3caec73b 1566}
924aaf3e 1567
3caec73b
KS
1568static int git_config_from_stdin(config_fn_t fn, void *data)
1569{
8032cc44
JS
1570 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin,
1571 data, NULL);
3caec73b
KS
1572}
1573
8032cc44
JS
1574int git_config_from_file_with_options(config_fn_t fn, const char *filename,
1575 void *data,
1576 const struct config_options *opts)
3caec73b
KS
1577{
1578 int ret = -1;
1579 FILE *f;
924aaf3e 1580
e9d983f1 1581 f = fopen_or_warn(filename, "r");
3caec73b 1582 if (f) {
8032cc44
JS
1583 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename,
1584 filename, f, data, opts);
17712991
LT
1585 fclose(f);
1586 }
1587 return ret;
1588}
10bea152 1589
8032cc44
JS
1590int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1591{
1592 return git_config_from_file_with_options(fn, filename, data, NULL);
1593}
1594
4574f1aa
JK
1595int git_config_from_mem(config_fn_t fn,
1596 const enum config_origin_type origin_type,
1597 const char *name, const char *buf, size_t len,
1598 void *data, const struct config_options *opts)
1bc88819
HV
1599{
1600 struct config_source top;
1601
1602 top.u.buf.buf = buf;
1603 top.u.buf.len = len;
1604 top.u.buf.pos = 0;
473166b9 1605 top.origin_type = origin_type;
1bc88819 1606 top.name = name;
d14d4244 1607 top.path = NULL;
66f97228 1608 top.default_error_action = CONFIG_ERROR_ERROR;
49d6cfa5
JK
1609 top.do_fgetc = config_buf_fgetc;
1610 top.do_ungetc = config_buf_ungetc;
1611 top.do_ftell = config_buf_ftell;
1bc88819 1612
4574f1aa 1613 return do_config_from(&top, fn, data, opts);
1bc88819
HV
1614}
1615
cd73de47 1616int git_config_from_blob_oid(config_fn_t fn,
9ebf689a 1617 const char *name,
cd73de47 1618 const struct object_id *oid,
9ebf689a 1619 void *data)
1bc88819
HV
1620{
1621 enum object_type type;
1622 char *buf;
1623 unsigned long size;
1624 int ret;
1625
b4f5aca4 1626 buf = read_object_file(oid, &type, &size);
1bc88819 1627 if (!buf)
a769bfc7 1628 return error(_("unable to load config blob object '%s'"), name);
1bc88819
HV
1629 if (type != OBJ_BLOB) {
1630 free(buf);
a769bfc7 1631 return error(_("reference '%s' does not point to a blob"), name);
1bc88819
HV
1632 }
1633
4574f1aa
JK
1634 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size,
1635 data, NULL);
1bc88819
HV
1636 free(buf);
1637
1638 return ret;
1639}
1640
1641static int git_config_from_blob_ref(config_fn_t fn,
1642 const char *name,
1643 void *data)
1644{
cd73de47 1645 struct object_id oid;
1bc88819 1646
cd73de47 1647 if (get_oid(name, &oid) < 0)
a769bfc7 1648 return error(_("unable to resolve config blob '%s'"), name);
cd73de47 1649 return git_config_from_blob_oid(fn, name, &oid, data);
1bc88819
HV
1650}
1651
506b17b1
JS
1652const char *git_etc_gitconfig(void)
1653{
7f0e39fa 1654 static const char *system_wide;
2de9de5e
SP
1655 if (!system_wide)
1656 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1657 return system_wide;
506b17b1
JS
1658}
1659
23b0c478
SP
1660/*
1661 * Parse environment variable 'k' as a boolean (in various
1662 * possible spellings); if missing, use the default value 'def'.
1663 */
0ef37164 1664int git_env_bool(const char *k, int def)
ab88c363
JK
1665{
1666 const char *v = getenv(k);
1667 return v ? git_config_bool(k, v) : def;
1668}
1669
23b0c478
SP
1670/*
1671 * Parse environment variable 'k' as ulong with possibly a unit
1672 * suffix; if missing, use the default value 'val'.
1673 */
1674unsigned long git_env_ulong(const char *k, unsigned long val)
1675{
1676 const char *v = getenv(k);
1677 if (v && !git_parse_ulong(v, &val))
a769bfc7 1678 die(_("failed to parse %s"), k);
23b0c478
SP
1679 return val;
1680}
1681
ab88c363
JK
1682int git_config_system(void)
1683{
1684 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1685}
1686
e145a0bc
NTND
1687static int do_git_config_sequence(const struct config_options *opts,
1688 config_fn_t fn, void *data)
4f629539 1689{
c72ee44b 1690 int ret = 0;
509adc33 1691 char *xdg_config = xdg_config_home("config");
4aad2f16 1692 char *user_config = expand_user_path("~/.gitconfig", 0);
e145a0bc
NTND
1693 char *repo_config;
1694
a577fb5f
BW
1695 if (opts->commondir)
1696 repo_config = mkpathdup("%s/config", opts->commondir);
44004872
JS
1697 else if (opts->git_dir)
1698 BUG("git_dir without commondir");
e145a0bc
NTND
1699 else
1700 repo_config = NULL;
5f1a63e0 1701
9acc5911 1702 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
f672deec
JH
1703 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK,
1704 opts->system_gently ?
1705 ACCESS_EACCES_OK : 0))
dc871831
DB
1706 ret += git_config_from_file(fn, git_etc_gitconfig(),
1707 data);
5f1a63e0 1708
9acc5911 1709 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1710 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1711 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1712
c72ee44b 1713 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1714 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1715
9acc5911 1716 current_parsing_scope = CONFIG_SCOPE_REPO;
800a7f99
JH
1717 if (!opts->ignore_repo && repo_config &&
1718 !access_or_die(repo_config, R_OK, 0))
aa387407 1719 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1720
58b284a2
NTND
1721 /*
1722 * Note: this should have a new scope, CONFIG_SCOPE_WORKTREE.
1723 * But let's not complicate things before it's actually needed.
1724 */
800a7f99 1725 if (!opts->ignore_worktree && repository_format_worktree_config) {
58b284a2
NTND
1726 char *path = git_pathdup("config.worktree");
1727 if (!access_or_die(path, R_OK, 0))
1728 ret += git_config_from_file(fn, path, data);
1729 free(path);
1730 }
1731
9acc5911 1732 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
800a7f99 1733 if (!opts->ignore_cmdline && git_config_from_parameters(fn, data) < 0)
8262aaa2 1734 die(_("unable to parse command-line config"));
8b1fa778 1735
9acc5911 1736 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1737 free(xdg_config);
1738 free(user_config);
80181868 1739 free(repo_config);
c72ee44b 1740 return ret;
4f629539
JH
1741}
1742
dc8441fd
BW
1743int config_with_options(config_fn_t fn, void *data,
1744 struct git_config_source *config_source,
1745 const struct config_options *opts)
dbdf5854 1746{
9b25a0b5
JK
1747 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1748
c48f4b37 1749 if (opts->respect_includes) {
9b25a0b5
JK
1750 inc.fn = fn;
1751 inc.data = data;
c48f4b37 1752 inc.opts = opts;
9b25a0b5
JK
1753 fn = git_config_include;
1754 data = &inc;
1755 }
dbdf5854 1756
c9b5e2a5
JK
1757 /*
1758 * If we have a specific filename, use it. Otherwise, follow the
1759 * regular lookup sequence.
1760 */
3caec73b
KS
1761 if (config_source && config_source->use_stdin)
1762 return git_config_from_stdin(fn, data);
1763 else if (config_source && config_source->file)
c8985ce0
KS
1764 return git_config_from_file(fn, config_source->file, data);
1765 else if (config_source && config_source->blob)
1766 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1767
e145a0bc 1768 return do_git_config_sequence(opts, fn, data);
dbdf5854
NTND
1769}
1770
155ef25f 1771static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1772{
155ef25f
TA
1773 int i, value_index;
1774 struct string_list *values;
1775 struct config_set_element *entry;
1776 struct configset_list *list = &cs->list;
155ef25f
TA
1777
1778 for (i = 0; i < list->nr; i++) {
1779 entry = list->items[i].e;
1780 value_index = list->items[i].value_index;
1781 values = &entry->value_list;
0d44a2da
JK
1782
1783 current_config_kvi = values->items[value_index].util;
1784
1785 if (fn(entry->key, values->items[value_index].string, data) < 0)
1786 git_die_config_linenr(entry->key,
1787 current_config_kvi->filename,
1788 current_config_kvi->linenr);
1789
1790 current_config_kvi = NULL;
155ef25f
TA
1791 }
1792}
1793
0654aa57
JS
1794void read_early_config(config_fn_t cb, void *data)
1795{
c48f4b37 1796 struct config_options opts = {0};
d3fb71b3
BW
1797 struct strbuf commondir = STRBUF_INIT;
1798 struct strbuf gitdir = STRBUF_INIT;
1a27409a 1799
c48f4b37 1800 opts.respect_includes = 1;
0654aa57 1801
a577fb5f
BW
1802 if (have_git_dir()) {
1803 opts.commondir = get_git_common_dir();
2185fde5 1804 opts.git_dir = get_git_dir();
0654aa57 1805 /*
1a27409a
JS
1806 * When setup_git_directory() was not yet asked to discover the
1807 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1808 * is any repository config we should use (but unlike
1809 * setup_git_directory_gently(), no global state is changed, most
1810 * notably, the current working directory is still the same after the
1811 * call).
0654aa57 1812 */
a577fb5f
BW
1813 } else if (!discover_git_directory(&commondir, &gitdir)) {
1814 opts.commondir = commondir.buf;
d3fb71b3 1815 opts.git_dir = gitdir.buf;
a577fb5f 1816 }
2185fde5 1817
dc8441fd 1818 config_with_options(cb, data, NULL, &opts);
0654aa57 1819
d3fb71b3
BW
1820 strbuf_release(&commondir);
1821 strbuf_release(&gitdir);
0654aa57
JS
1822}
1823
800a7f99
JH
1824/*
1825 * Read config but only enumerate system and global settings.
1826 * Omit any repo-local, worktree-local, or command-line settings.
1827 */
1828void read_very_early_config(config_fn_t cb, void *data)
1829{
1830 struct config_options opts = { 0 };
1831
1832 opts.respect_includes = 1;
1833 opts.ignore_repo = 1;
1834 opts.ignore_worktree = 1;
1835 opts.ignore_cmdline = 1;
f672deec 1836 opts.system_gently = 1;
800a7f99
JH
1837
1838 config_with_options(cb, data, NULL, &opts);
1839}
1840
3c8687a7
TA
1841static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1842{
1843 struct config_set_element k;
1844 struct config_set_element *found_entry;
1845 char *normalized_key;
3c8687a7
TA
1846 /*
1847 * `key` may come from the user, so normalize it before using it
1848 * for querying entries from the hashmap.
1849 */
270cd9ea 1850 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1851 return NULL;
1852
1853 hashmap_entry_init(&k, strhash(normalized_key));
1854 k.key = normalized_key;
1855 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1856 free(normalized_key);
1857 return found_entry;
1858}
1859
1860static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1861{
1862 struct config_set_element *e;
3df8fd62 1863 struct string_list_item *si;
155ef25f 1864 struct configset_list_item *l_item;
3df8fd62
TA
1865 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1866
3c8687a7
TA
1867 e = configset_find_element(cs, key);
1868 /*
1869 * Since the keys are being fed by git_config*() callback mechanism, they
1870 * are already normalized. So simply add them without any further munging.
1871 */
1872 if (!e) {
1873 e = xmalloc(sizeof(*e));
1874 hashmap_entry_init(e, strhash(key));
1875 e->key = xstrdup(key);
1876 string_list_init(&e->value_list, 1);
1877 hashmap_add(&cs->config_hash, e);
1878 }
8c53f071 1879 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1880
1881 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1882 l_item = &cs->list.items[cs->list.nr++];
1883 l_item->e = e;
1884 l_item->value_index = e->value_list.nr - 1;
1885
3258258f 1886 if (!cf)
033abf97 1887 BUG("configset_add_value has no source");
3258258f 1888 if (cf->name) {
3df8fd62
TA
1889 kv_info->filename = strintern(cf->name);
1890 kv_info->linenr = cf->linenr;
1b8132d9 1891 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1892 } else {
1893 /* for values read from `git_config_from_parameters()` */
1894 kv_info->filename = NULL;
1895 kv_info->linenr = -1;
1b8132d9 1896 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1897 }
9acc5911 1898 kv_info->scope = current_parsing_scope;
3df8fd62 1899 si->util = kv_info;
3c8687a7
TA
1900
1901 return 0;
1902}
1903
7663cdc8 1904static int config_set_element_cmp(const void *unused_cmp_data,
77bdc097
SB
1905 const void *entry,
1906 const void *entry_or_key,
7663cdc8 1907 const void *unused_keydata)
3c8687a7 1908{
77bdc097
SB
1909 const struct config_set_element *e1 = entry;
1910 const struct config_set_element *e2 = entry_or_key;
1911
3c8687a7
TA
1912 return strcmp(e1->key, e2->key);
1913}
1914
1915void git_configset_init(struct config_set *cs)
1916{
77bdc097 1917 hashmap_init(&cs->config_hash, config_set_element_cmp, NULL, 0);
3c8687a7 1918 cs->hash_initialized = 1;
155ef25f
TA
1919 cs->list.nr = 0;
1920 cs->list.alloc = 0;
1921 cs->list.items = NULL;
3c8687a7
TA
1922}
1923
1924void git_configset_clear(struct config_set *cs)
1925{
1926 struct config_set_element *entry;
1927 struct hashmap_iter iter;
1928 if (!cs->hash_initialized)
1929 return;
1930
1931 hashmap_iter_init(&cs->config_hash, &iter);
1932 while ((entry = hashmap_iter_next(&iter))) {
1933 free(entry->key);
3df8fd62 1934 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1935 }
1936 hashmap_free(&cs->config_hash, 1);
1937 cs->hash_initialized = 0;
155ef25f
TA
1938 free(cs->list.items);
1939 cs->list.nr = 0;
1940 cs->list.alloc = 0;
1941 cs->list.items = NULL;
3c8687a7
TA
1942}
1943
1944static int config_set_callback(const char *key, const char *value, void *cb)
1945{
1946 struct config_set *cs = cb;
1947 configset_add_value(cs, key, value);
1948 return 0;
1949}
1950
1951int git_configset_add_file(struct config_set *cs, const char *filename)
1952{
1953 return git_config_from_file(config_set_callback, filename, cs);
1954}
1955
1956int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1957{
1958 const struct string_list *values = NULL;
1959 /*
1960 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1961 * queried key in the files of the configset, the value returned will be the last
1962 * value in the value list for that key.
1963 */
1964 values = git_configset_get_value_multi(cs, key);
1965
1966 if (!values)
1967 return 1;
1968 assert(values->nr > 0);
1969 *value = values->items[values->nr - 1].string;
1970 return 0;
1971}
1972
1973const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1974{
1975 struct config_set_element *e = configset_find_element(cs, key);
1976 return e ? &e->value_list : NULL;
1977}
1978
1979int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1980{
1981 const char *value;
1982 if (!git_configset_get_value(cs, key, &value))
1983 return git_config_string(dest, key, value);
1984 else
1985 return 1;
1986}
1987
1988int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1989{
1990 return git_configset_get_string_const(cs, key, (const char **)dest);
1991}
1992
1993int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1994{
1995 const char *value;
1996 if (!git_configset_get_value(cs, key, &value)) {
1997 *dest = git_config_int(key, value);
1998 return 0;
1999 } else
2000 return 1;
2001}
2002
2003int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
2004{
2005 const char *value;
2006 if (!git_configset_get_value(cs, key, &value)) {
2007 *dest = git_config_ulong(key, value);
2008 return 0;
2009 } else
2010 return 1;
2011}
2012
2013int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
2014{
2015 const char *value;
2016 if (!git_configset_get_value(cs, key, &value)) {
2017 *dest = git_config_bool(key, value);
2018 return 0;
2019 } else
2020 return 1;
2021}
2022
2023int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
2024 int *is_bool, int *dest)
2025{
2026 const char *value;
2027 if (!git_configset_get_value(cs, key, &value)) {
2028 *dest = git_config_bool_or_int(key, value, is_bool);
2029 return 0;
2030 } else
2031 return 1;
2032}
2033
2034int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
2035{
2036 const char *value;
2037 if (!git_configset_get_value(cs, key, &value)) {
89576613 2038 *dest = git_parse_maybe_bool(value);
3c8687a7
TA
2039 if (*dest == -1)
2040 return -1;
2041 return 0;
2042 } else
2043 return 1;
2044}
2045
2046int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
2047{
2048 const char *value;
2049 if (!git_configset_get_value(cs, key, &value))
2050 return git_config_pathname(dest, key, value);
2051 else
2052 return 1;
2053}
2054
3b256228
BW
2055/* Functions use to read configuration from a repository */
2056static void repo_read_config(struct repository *repo)
3c8687a7 2057{
1703751f 2058 struct config_options opts = { 0 };
3b256228
BW
2059
2060 opts.respect_includes = 1;
2061 opts.commondir = repo->commondir;
2062 opts.git_dir = repo->gitdir;
2063
2064 if (!repo->config)
2065 repo->config = xcalloc(1, sizeof(struct config_set));
2066 else
2067 git_configset_clear(repo->config);
2068
2069 git_configset_init(repo->config);
2070
2071 if (config_with_options(config_set_callback, repo->config, NULL, &opts) < 0)
2072 /*
2073 * config_with_options() normally returns only
2074 * zero, as most errors are fatal, and
2075 * non-fatal potential errors are guarded by "if"
2076 * statements that are entered only when no error is
2077 * possible.
2078 *
2079 * If we ever encounter a non-fatal error, it means
2080 * something went really wrong and we should stop
2081 * immediately.
2082 */
2083 die(_("unknown error occurred while reading the configuration files"));
2084}
2085
2086static void git_config_check_init(struct repository *repo)
2087{
2088 if (repo->config && repo->config->hash_initialized)
3c8687a7 2089 return;
3b256228 2090 repo_read_config(repo);
3c8687a7
TA
2091}
2092
3b256228 2093static void repo_config_clear(struct repository *repo)
3c8687a7 2094{
3b256228 2095 if (!repo->config || !repo->config->hash_initialized)
3c8687a7 2096 return;
3b256228 2097 git_configset_clear(repo->config);
3c8687a7
TA
2098}
2099
3b256228 2100void repo_config(struct repository *repo, config_fn_t fn, void *data)
3c8687a7 2101{
3b256228
BW
2102 git_config_check_init(repo);
2103 configset_iter(repo->config, fn, data);
3c8687a7
TA
2104}
2105
3b256228
BW
2106int repo_config_get_value(struct repository *repo,
2107 const char *key, const char **value)
3c8687a7 2108{
3b256228
BW
2109 git_config_check_init(repo);
2110 return git_configset_get_value(repo->config, key, value);
3c8687a7
TA
2111}
2112
3b256228
BW
2113const struct string_list *repo_config_get_value_multi(struct repository *repo,
2114 const char *key)
2115{
2116 git_config_check_init(repo);
2117 return git_configset_get_value_multi(repo->config, key);
2118}
2119
2120int repo_config_get_string_const(struct repository *repo,
2121 const char *key, const char **dest)
2122{
2123 int ret;
2124 git_config_check_init(repo);
2125 ret = git_configset_get_string_const(repo->config, key, dest);
2126 if (ret < 0)
2127 git_die_config(key, NULL);
2128 return ret;
2129}
2130
2131int repo_config_get_string(struct repository *repo,
2132 const char *key, char **dest)
2133{
2134 git_config_check_init(repo);
2135 return repo_config_get_string_const(repo, key, (const char **)dest);
2136}
2137
2138int repo_config_get_int(struct repository *repo,
2139 const char *key, int *dest)
2140{
2141 git_config_check_init(repo);
2142 return git_configset_get_int(repo->config, key, dest);
2143}
2144
2145int repo_config_get_ulong(struct repository *repo,
2146 const char *key, unsigned long *dest)
2147{
2148 git_config_check_init(repo);
2149 return git_configset_get_ulong(repo->config, key, dest);
2150}
2151
2152int repo_config_get_bool(struct repository *repo,
2153 const char *key, int *dest)
2154{
2155 git_config_check_init(repo);
2156 return git_configset_get_bool(repo->config, key, dest);
2157}
2158
2159int repo_config_get_bool_or_int(struct repository *repo,
2160 const char *key, int *is_bool, int *dest)
2161{
2162 git_config_check_init(repo);
2163 return git_configset_get_bool_or_int(repo->config, key, is_bool, dest);
2164}
2165
2166int repo_config_get_maybe_bool(struct repository *repo,
2167 const char *key, int *dest)
2168{
2169 git_config_check_init(repo);
2170 return git_configset_get_maybe_bool(repo->config, key, dest);
2171}
2172
2173int repo_config_get_pathname(struct repository *repo,
2174 const char *key, const char **dest)
3c8687a7 2175{
5a80e97c 2176 int ret;
3b256228
BW
2177 git_config_check_init(repo);
2178 ret = git_configset_get_pathname(repo->config, key, dest);
5a80e97c
TA
2179 if (ret < 0)
2180 git_die_config(key, NULL);
2181 return ret;
3c8687a7
TA
2182}
2183
3b256228
BW
2184/* Functions used historically to read configuration from 'the_repository' */
2185void git_config(config_fn_t fn, void *data)
2186{
2187 repo_config(the_repository, fn, data);
2188}
2189
2190void git_config_clear(void)
2191{
2192 repo_config_clear(the_repository);
2193}
2194
2195int git_config_get_value(const char *key, const char **value)
2196{
2197 return repo_config_get_value(the_repository, key, value);
2198}
2199
2200const struct string_list *git_config_get_value_multi(const char *key)
2201{
2202 return repo_config_get_value_multi(the_repository, key);
2203}
2204
2205int git_config_get_string_const(const char *key, const char **dest)
2206{
2207 return repo_config_get_string_const(the_repository, key, dest);
2208}
2209
3c8687a7
TA
2210int git_config_get_string(const char *key, char **dest)
2211{
3b256228 2212 return repo_config_get_string(the_repository, key, dest);
3c8687a7
TA
2213}
2214
2215int git_config_get_int(const char *key, int *dest)
2216{
3b256228 2217 return repo_config_get_int(the_repository, key, dest);
3c8687a7
TA
2218}
2219
2220int git_config_get_ulong(const char *key, unsigned long *dest)
2221{
3b256228 2222 return repo_config_get_ulong(the_repository, key, dest);
3c8687a7
TA
2223}
2224
2225int git_config_get_bool(const char *key, int *dest)
2226{
3b256228 2227 return repo_config_get_bool(the_repository, key, dest);
3c8687a7
TA
2228}
2229
2230int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
2231{
3b256228 2232 return repo_config_get_bool_or_int(the_repository, key, is_bool, dest);
3c8687a7
TA
2233}
2234
2235int git_config_get_maybe_bool(const char *key, int *dest)
2236{
3b256228 2237 return repo_config_get_maybe_bool(the_repository, key, dest);
3c8687a7
TA
2238}
2239
2240int git_config_get_pathname(const char *key, const char **dest)
2241{
3b256228 2242 return repo_config_get_pathname(the_repository, key, dest);
5a80e97c
TA
2243}
2244
77d67977
CC
2245int git_config_get_expiry(const char *key, const char **output)
2246{
2247 int ret = git_config_get_string_const(key, output);
2248 if (ret)
2249 return ret;
2250 if (strcmp(*output, "now")) {
dddbad72 2251 timestamp_t now = approxidate("now");
77d67977
CC
2252 if (approxidate(*output) >= now)
2253 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
2254 }
2255 return ret;
2256}
2257
6e96cb52
JH
2258int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now)
2259{
2260 char *expiry_string;
2261 intmax_t days;
2262 timestamp_t when;
2263
2264 if (git_config_get_string(key, &expiry_string))
2265 return 1; /* no such thing */
2266
2267 if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) {
2268 const int scale = 86400;
2269 *expiry = now - days * scale;
2270 return 0;
2271 }
2272
2273 if (!parse_expiry_date(expiry_string, &when)) {
2274 *expiry = when;
2275 return 0;
2276 }
2277 return -1; /* thing exists but cannot be parsed */
2278}
2279
1f44b09b
CC
2280int git_config_get_split_index(void)
2281{
2282 int val;
2283
2284 if (!git_config_get_maybe_bool("core.splitindex", &val))
2285 return val;
2286
2287 return -1; /* default value */
2288}
2289
72dcb7b3
CC
2290int git_config_get_max_percent_split_change(void)
2291{
2292 int val = -1;
2293
2294 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2295 if (0 <= val && val <= 100)
2296 return val;
2297
2298 return error(_("splitIndex.maxPercentChange value '%d' "
2299 "should be between 0 and 100"), val);
2300 }
2301
2302 return -1; /* default value */
2303}
2304
883e248b
BP
2305int git_config_get_fsmonitor(void)
2306{
2307 if (git_config_get_pathname("core.fsmonitor", &core_fsmonitor))
4cb54d0a 2308 core_fsmonitor = getenv("GIT_TEST_FSMONITOR");
883e248b
BP
2309
2310 if (core_fsmonitor && !*core_fsmonitor)
2311 core_fsmonitor = NULL;
2312
2313 if (core_fsmonitor)
2314 return 1;
2315
2316 return 0;
2317}
2318
2a9dedef 2319int git_config_get_index_threads(int *dest)
c780b9cf 2320{
2a9dedef 2321 int is_bool, val;
c780b9cf
BP
2322
2323 val = git_env_ulong("GIT_TEST_INDEX_THREADS", 0);
2a9dedef
JN
2324 if (val) {
2325 *dest = val;
2326 return 0;
2327 }
c780b9cf
BP
2328
2329 if (!git_config_get_bool_or_int("index.threads", &is_bool, &val)) {
2330 if (is_bool)
2a9dedef 2331 *dest = val ? 0 : 1;
c780b9cf 2332 else
2a9dedef
JN
2333 *dest = val;
2334 return 0;
c780b9cf
BP
2335 }
2336
2a9dedef 2337 return 1;
c780b9cf
BP
2338}
2339
5a80e97c
TA
2340NORETURN
2341void git_die_config_linenr(const char *key, const char *filename, int linenr)
2342{
2343 if (!filename)
2344 die(_("unable to parse '%s' from command-line config"), key);
2345 else
2346 die(_("bad config variable '%s' in file '%s' at line %d"),
2347 key, filename, linenr);
2348}
2349
2350NORETURN __attribute__((format(printf, 2, 3)))
2351void git_die_config(const char *key, const char *err, ...)
2352{
2353 const struct string_list *values;
2354 struct key_value_info *kv_info;
2355
2356 if (err) {
2357 va_list params;
2358 va_start(params, err);
2359 vreportf("error: ", err, params);
2360 va_end(params);
2361 }
2362 values = git_config_get_value_multi(key);
2363 kv_info = values->items[values->nr - 1].util;
2364 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2365}
2366
10bea152
JS
2367/*
2368 * Find all the stuff for git_config_set() below.
2369 */
4ddba79d 2370
fee8572c 2371struct config_store_data {
10bea152 2372 int baselen;
4b25d091 2373 char *key;
f98d863d 2374 int do_not_match;
4b25d091 2375 regex_t *value_regex;
4ddba79d 2376 int multi_replace;
6ae996f2
JS
2377 struct {
2378 size_t begin, end;
2379 enum config_event_t type;
22aedfcc 2380 int is_keys_section;
6ae996f2
JS
2381 } *parsed;
2382 unsigned int parsed_nr, parsed_alloc, *seen, seen_nr, seen_alloc;
5221c315 2383 unsigned int key_seen:1, section_seen:1, is_keys_section:1;
fee8572c 2384};
10bea152 2385
2a00e594
2386static void config_store_data_clear(struct config_store_data *store)
2387{
e7347cb9 2388 free(store->key);
3b82542d
2389 if (store->value_regex != NULL &&
2390 store->value_regex != CONFIG_REGEX_NONE) {
2391 regfree(store->value_regex);
2392 free(store->value_regex);
2393 }
2a00e594
2394 free(store->parsed);
2395 free(store->seen);
2396 memset(store, 0, sizeof(*store));
2397}
2398
fee8572c
JS
2399static int matches(const char *key, const char *value,
2400 const struct config_store_data *store)
f98d863d 2401{
fee8572c 2402 if (strcmp(key, store->key))
c1063be2 2403 return 0; /* not ours */
fee8572c 2404 if (!store->value_regex)
c1063be2 2405 return 1; /* always matches */
fee8572c 2406 if (store->value_regex == CONFIG_REGEX_NONE)
c1063be2
JK
2407 return 0; /* never matches */
2408
fee8572c
JS
2409 return store->do_not_match ^
2410 (value && !regexec(store->value_regex, value, 0, NULL, 0));
f98d863d
JS
2411}
2412
6ae996f2
JS
2413static int store_aux_event(enum config_event_t type,
2414 size_t begin, size_t end, void *data)
2415{
2416 struct config_store_data *store = data;
2417
2418 ALLOC_GROW(store->parsed, store->parsed_nr + 1, store->parsed_alloc);
2419 store->parsed[store->parsed_nr].begin = begin;
2420 store->parsed[store->parsed_nr].end = end;
2421 store->parsed[store->parsed_nr].type = type;
6ae996f2
JS
2422
2423 if (type == CONFIG_EVENT_SECTION) {
2d84f13d
SB
2424 int (*cmpfn)(const char *, const char *, size_t);
2425
6ae996f2 2426 if (cf->var.len < 2 || cf->var.buf[cf->var.len - 1] != '.')
a769bfc7 2427 return error(_("invalid section name '%s'"), cf->var.buf);
6ae996f2 2428
2d84f13d
SB
2429 if (cf->subsection_case_sensitive)
2430 cmpfn = strncasecmp;
2431 else
2432 cmpfn = strncmp;
2433
6ae996f2 2434 /* Is this the section we were looking for? */
22aedfcc
JS
2435 store->is_keys_section =
2436 store->parsed[store->parsed_nr].is_keys_section =
2437 cf->var.len - 1 == store->baselen &&
2d84f13d 2438 !cmpfn(cf->var.buf, store->key, store->baselen);
c71d8bb3
JS
2439 if (store->is_keys_section) {
2440 store->section_seen = 1;
2441 ALLOC_GROW(store->seen, store->seen_nr + 1,
2442 store->seen_alloc);
2443 store->seen[store->seen_nr] = store->parsed_nr;
2444 }
6ae996f2
JS
2445 }
2446
22aedfcc
JS
2447 store->parsed_nr++;
2448
6ae996f2 2449 return 0;
f98d863d
JS
2450}
2451
4b25d091 2452static int store_aux(const char *key, const char *value, void *cb)
10bea152 2453{
fee8572c 2454 struct config_store_data *store = cb;
ae9ee41d 2455
5221c315 2456 if (store->key_seen) {
fee8572c 2457 if (matches(key, value, store)) {
668b9ade 2458 if (store->seen_nr == 1 && store->multi_replace == 0) {
8262aaa2 2459 warning(_("%s has multiple values"), key);
10bea152 2460 }
4ddba79d 2461
668b9ade
JS
2462 ALLOC_GROW(store->seen, store->seen_nr + 1,
2463 store->seen_alloc);
83786fa4 2464
6ae996f2 2465 store->seen[store->seen_nr] = store->parsed_nr;
668b9ade 2466 store->seen_nr++;
10bea152 2467 }
5221c315 2468 } else if (store->is_keys_section) {
ae9ee41d 2469 /*
6ae996f2
JS
2470 * Do not increment matches yet: this may not be a match, but we
2471 * are in the desired section.
ae9ee41d 2472 */
6ae996f2
JS
2473 ALLOC_GROW(store->seen, store->seen_nr + 1, store->seen_alloc);
2474 store->seen[store->seen_nr] = store->parsed_nr;
5221c315 2475 store->section_seen = 1;
ae9ee41d 2476
6ae996f2
JS
2477 if (matches(key, value, store)) {
2478 store->seen_nr++;
2479 store->key_seen = 1;
bdf0ef08 2480 }
10bea152 2481 }
5221c315 2482
10bea152
JS
2483 return 0;
2484}
2485
64c0d71c 2486static int write_error(const char *filename)
480c9e52 2487{
a769bfc7 2488 error(_("failed to write new configuration file %s"), filename);
480c9e52
AW
2489
2490 /* Same error code as "failed to rename". */
2491 return 4;
2492}
2493
fee8572c
JS
2494static struct strbuf store_create_section(const char *key,
2495 const struct config_store_data *store)
10bea152 2496{
cb891a59 2497 const char *dot;
d9bd4cbb 2498 int i;
f285a2d7 2499 struct strbuf sb = STRBUF_INIT;
d14f7764 2500
fee8572c 2501 dot = memchr(key, '.', store->baselen);
d14f7764 2502 if (dot) {
cb891a59 2503 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
fee8572c 2504 for (i = dot - key + 1; i < store->baselen; i++) {
e5c349ba 2505 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2506 strbuf_addch(&sb, '\\');
2507 strbuf_addch(&sb, key[i]);
d14f7764 2508 }
cb891a59
KH
2509 strbuf_addstr(&sb, "\"]\n");
2510 } else {
fee8572c 2511 strbuf_addf(&sb, "[%.*s]\n", store->baselen, key);
d14f7764
LT
2512 }
2513
5463caab
SD
2514 return sb;
2515}
2516
fee8572c
JS
2517static ssize_t write_section(int fd, const char *key,
2518 const struct config_store_data *store)
5463caab 2519{
fee8572c 2520 struct strbuf sb = store_create_section(key, store);
3b48045c 2521 ssize_t ret;
5463caab 2522
782c030e 2523 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59 2524 strbuf_release(&sb);
480c9e52 2525
d9bd4cbb 2526 return ret;
10bea152
JS
2527}
2528
fee8572c
JS
2529static ssize_t write_pair(int fd, const char *key, const char *value,
2530 const struct config_store_data *store)
10bea152 2531{
d9bd4cbb
JK
2532 int i;
2533 ssize_t ret;
fee8572c 2534 int length = strlen(key + store->baselen + 1);
cb891a59 2535 const char *quote = "";
f285a2d7 2536 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2537
6281f394
JM
2538 /*
2539 * Check to see if the value needs to be surrounded with a dq pair.
2540 * Note that problematic characters are always backslash-quoted; this
2541 * check is about not losing leading or trailing SP and strings that
2542 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2543 * configuration parser.
2544 */
cdd4fb15 2545 if (value[0] == ' ')
cb891a59 2546 quote = "\"";
cdd4fb15
BG
2547 for (i = 0; value[i]; i++)
2548 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2549 quote = "\"";
2550 if (i && value[i - 1] == ' ')
2551 quote = "\"";
2552
cb891a59 2553 strbuf_addf(&sb, "\t%.*s = %s",
fee8572c 2554 length, key + store->baselen + 1, quote);
10bea152 2555
10bea152
JS
2556 for (i = 0; value[i]; i++)
2557 switch (value[i]) {
480c9e52 2558 case '\n':
cb891a59 2559 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2560 break;
2561 case '\t':
cb891a59 2562 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2563 break;
2564 case '"':
2565 case '\\':
cb891a59 2566 strbuf_addch(&sb, '\\');
1cf01a34 2567 /* fallthrough */
480c9e52 2568 default:
cb891a59 2569 strbuf_addch(&sb, value[i]);
480c9e52
AW
2570 break;
2571 }
cb891a59
KH
2572 strbuf_addf(&sb, "%s\n", quote);
2573
d9bd4cbb 2574 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59
KH
2575 strbuf_release(&sb);
2576
d9bd4cbb 2577 return ret;
10bea152
JS
2578}
2579
22aedfcc
JS
2580/*
2581 * If we are about to unset the last key(s) in a section, and if there are
2582 * no comments surrounding (or included in) the section, we will want to
2583 * extend begin/end to remove the entire section.
2584 *
2585 * Note: the parameter `seen_ptr` points to the index into the store.seen
2586 * array. * This index may be incremented if a section has more than one
2587 * entry (which all are to be removed).
2588 */
2589static void maybe_remove_section(struct config_store_data *store,
22aedfcc
JS
2590 size_t *begin_offset, size_t *end_offset,
2591 int *seen_ptr)
4ddba79d 2592{
22aedfcc
JS
2593 size_t begin;
2594 int i, seen, section_seen = 0;
4ddba79d 2595
22aedfcc
JS
2596 /*
2597 * First, ensure that this is the first key, and that there are no
2598 * comments before the entry nor before the section header.
2599 */
2600 seen = *seen_ptr;
2601 for (i = store->seen[seen]; i > 0; i--) {
2602 enum config_event_t type = store->parsed[i - 1].type;
2603
2604 if (type == CONFIG_EVENT_COMMENT)
2605 /* There is a comment before this entry or section */
2606 return;
2607 if (type == CONFIG_EVENT_ENTRY) {
2608 if (!section_seen)
2609 /* This is not the section's first entry. */
2610 return;
2611 /* We encountered no comment before the section. */
2612 break;
2613 }
2614 if (type == CONFIG_EVENT_SECTION) {
2615 if (!store->parsed[i - 1].is_keys_section)
2616 break;
2617 section_seen = 1;
4ddba79d 2618 }
7a31cc0f 2619 }
22aedfcc
JS
2620 begin = store->parsed[i].begin;
2621
2622 /*
2623 * Next, make sure that we are removing he last key(s) in the section,
2624 * and that there are no comments that are possibly about the current
2625 * section.
2626 */
2627 for (i = store->seen[seen] + 1; i < store->parsed_nr; i++) {
2628 enum config_event_t type = store->parsed[i].type;
4ddba79d 2629
22aedfcc
JS
2630 if (type == CONFIG_EVENT_COMMENT)
2631 return;
2632 if (type == CONFIG_EVENT_SECTION) {
2633 if (store->parsed[i].is_keys_section)
2634 continue;
2635 break;
2636 }
2637 if (type == CONFIG_EVENT_ENTRY) {
2638 if (++seen < store->seen_nr &&
2639 i == store->seen[seen])
2640 /* We want to remove this entry, too */
2641 continue;
2642 /* There is another entry in this section. */
2643 return;
2644 }
2645 }
2646
2647 /*
2648 * We are really removing the last entry/entries from this section, and
2649 * there are no enclosed or surrounding comments. Remove the entire,
2650 * now-empty section.
2651 */
2652 *seen_ptr = seen;
2653 *begin_offset = begin;
2654 if (i < store->parsed_nr)
2655 *end_offset = store->parsed[i].begin;
2656 else
2657 *end_offset = store->parsed[store->parsed_nr - 1].end;
4ddba79d
JS
2658}
2659
30598ad0
PS
2660int git_config_set_in_file_gently(const char *config_filename,
2661 const char *key, const char *value)
5ec31182 2662{
30598ad0 2663 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2664}
2665
3d180648
PS
2666void git_config_set_in_file(const char *config_filename,
2667 const char *key, const char *value)
10bea152 2668{
3d180648 2669 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2670}
2671
30598ad0 2672int git_config_set_gently(const char *key, const char *value)
10bea152 2673{
30598ad0 2674 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2675}
2676
3d180648 2677void git_config_set(const char *key, const char *value)
b4c8aba6 2678{
3d180648 2679 git_config_set_multivar(key, value, NULL, 0);
ee4512ed
JH
2680
2681 trace2_cmd_set_config(key, value);
10bea152
JS
2682}
2683
2684/*
2685 * If value==NULL, unset in (remove from) config,
2686 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2687 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2688 * (only add a new one)
4ddba79d
JS
2689 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2690 * else all matching key/values (regardless how many) are removed,
2691 * before the new pair is written.
10bea152
JS
2692 *
2693 * Returns 0 on success.
2694 *
2695 * This function does this:
2696 *
2697 * - it locks the config file by creating ".git/config.lock"
2698 *
2699 * - it then parses the config using store_aux() as validator to find
2700 * the position on the key/value pair to replace. If it is to be unset,
2701 * it must be found exactly once.
2702 *
2703 * - the config file is mmap()ed and the part before the match (if any) is
2704 * written to the lock file, then the changed part and the rest.
2705 *
2706 * - the config file is removed and the lock file rename()d to it.
2707 *
2708 */
30598ad0
PS
2709int git_config_set_multivar_in_file_gently(const char *config_filename,
2710 const char *key, const char *value,
2711 const char *value_regex,
2712 int multi_replace)
10bea152 2713{
54d160ec 2714 int fd = -1, in_fd = -1;
dafc88b1 2715 int ret;
bfffb48c 2716 struct lock_file lock = LOCK_INIT;
0a5f5759 2717 char *filename_buf = NULL;
3a1b3126
JK
2718 char *contents = NULL;
2719 size_t contents_sz;
fee8572c
JS
2720 struct config_store_data store;
2721
2722 memset(&store, 0, sizeof(store));
4ddba79d 2723
b09c53a3
LP
2724 /* parse-key returns negative; flip the sign to feed exit(3) */
2725 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2726 if (ret)
dafc88b1 2727 goto out_free;
b17e659d
JS
2728
2729 store.multi_replace = multi_replace;
10bea152 2730
0a5f5759
JK
2731 if (!config_filename)
2732 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2733
2734 /*
6cbf973c 2735 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2736 * contents of .git/config will be written into it.
2737 */
bfffb48c 2738 fd = hold_lock_file_for_update(&lock, config_filename, 0);
6cbf973c 2739 if (fd < 0) {
a769bfc7 2740 error_errno(_("could not lock config file %s"), config_filename);
7a397419 2741 ret = CONFIG_NO_LOCK;
dafc88b1 2742 goto out_free;
10bea152
JS
2743 }
2744
2745 /*
2746 * If .git/config does not exist yet, write a minimal version.
2747 */
88fb958b
AR
2748 in_fd = open(config_filename, O_RDONLY);
2749 if ( in_fd < 0 ) {
88fb958b 2750 if ( ENOENT != errno ) {
a769bfc7 2751 error_errno(_("opening %s"), config_filename);
7a397419 2752 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2753 goto out_free;
88fb958b 2754 }
10bea152
JS
2755 /* if nothing to unset, error out */
2756 if (value == NULL) {
7a397419 2757 ret = CONFIG_NOTHING_SET;
dafc88b1 2758 goto out_free;
10bea152
JS
2759 }
2760
e7347cb9
2761 free(store.key);
2762 store.key = xstrdup(key);
fee8572c
JS
2763 if (write_section(fd, key, &store) < 0 ||
2764 write_pair(fd, key, value, &store) < 0)
93c1e079
JH
2765 goto write_err_out;
2766 } else {
88fb958b 2767 struct stat st;
3a1b3126 2768 size_t copy_begin, copy_end;
dc49cd76 2769 int i, new_line = 0;
6ae996f2 2770 struct config_options opts;
10bea152
JS
2771
2772 if (value_regex == NULL)
2773 store.value_regex = NULL;
c1063be2
JK
2774 else if (value_regex == CONFIG_REGEX_NONE)
2775 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2776 else {
f98d863d
JS
2777 if (value_regex[0] == '!') {
2778 store.do_not_match = 1;
2779 value_regex++;
2780 } else
2781 store.do_not_match = 0;
2782
2d7320d0 2783 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2784 if (regcomp(store.value_regex, value_regex,
2785 REG_EXTENDED)) {
a769bfc7 2786 error(_("invalid pattern: %s"), value_regex);
3b82542d 2787 FREE_AND_NULL(store.value_regex);
7a397419 2788 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2789 goto out_free;
10bea152
JS
2790 }
2791 }
2792
6ae996f2
JS
2793 ALLOC_GROW(store.parsed, 1, store.parsed_alloc);
2794 store.parsed[0].end = 0;
2795
2796 memset(&opts, 0, sizeof(opts));
2797 opts.event_fn = store_aux_event;
2798 opts.event_fn_data = &store;
10bea152
JS
2799
2800 /*
6ae996f2
JS
2801 * After this, store.parsed will contain offsets of all the
2802 * parsed elements, and store.seen will contain a list of
2803 * matches, as indices into store.parsed.
2804 *
10bea152
JS
2805 * As a side effect, we make sure to transform only a valid
2806 * existing config file.
2807 */
6ae996f2
JS
2808 if (git_config_from_file_with_options(store_aux,
2809 config_filename,
2810 &store, &opts)) {
a769bfc7 2811 error(_("invalid config file %s"), config_filename);
7a397419 2812 ret = CONFIG_INVALID_FILE;
dafc88b1 2813 goto out_free;
10bea152
JS
2814 }
2815
4ddba79d 2816 /* if nothing to unset, or too many matches, error out */
668b9ade
JS
2817 if ((store.seen_nr == 0 && value == NULL) ||
2818 (store.seen_nr > 1 && multi_replace == 0)) {
7a397419 2819 ret = CONFIG_NOTHING_SET;
dafc88b1 2820 goto out_free;
10bea152
JS
2821 }
2822
29647d79
NTND
2823 if (fstat(in_fd, &st) == -1) {
2824 error_errno(_("fstat on %s failed"), config_filename);
2825 ret = CONFIG_INVALID_FILE;
2826 goto out_free;
2827 }
2828
dc49cd76 2829 contents_sz = xsize_t(st.st_size);
1570856b
JK
2830 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2831 MAP_PRIVATE, in_fd, 0);
2832 if (contents == MAP_FAILED) {
0e8771f1
JK
2833 if (errno == ENODEV && S_ISDIR(st.st_mode))
2834 errno = EISDIR;
a769bfc7 2835 error_errno(_("unable to mmap '%s'"), config_filename);
1570856b
JK
2836 ret = CONFIG_INVALID_FILE;
2837 contents = NULL;
2838 goto out_free;
2839 }
10bea152 2840 close(in_fd);
54d160ec 2841 in_fd = -1;
10bea152 2842
bfffb48c 2843 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
a769bfc7 2844 error_errno(_("chmod on %s failed"), get_lock_file_path(&lock));
daa22c6f
EW
2845 ret = CONFIG_NO_WRITE;
2846 goto out_free;
2847 }
2848
6ae996f2
JS
2849 if (store.seen_nr == 0) {
2850 if (!store.seen_alloc) {
2851 /* Did not see key nor section */
2852 ALLOC_GROW(store.seen, 1, store.seen_alloc);
2853 store.seen[0] = store.parsed_nr
2854 - !!store.parsed_nr;
2855 }
668b9ade 2856 store.seen_nr = 1;
6ae996f2 2857 }
4ddba79d 2858
668b9ade 2859 for (i = 0, copy_begin = 0; i < store.seen_nr; i++) {
6ae996f2
JS
2860 size_t replace_end;
2861 int j = store.seen[i];
2862
46fc89ce 2863 new_line = 0;
6ae996f2 2864 if (!store.key_seen) {
c71d8bb3
JS
2865 copy_end = store.parsed[j].end;
2866 /* include '\n' when copying section header */
2867 if (copy_end > 0 && copy_end < contents_sz &&
2868 contents[copy_end - 1] != '\n' &&
2869 contents[copy_end] == '\n')
2870 copy_end++;
2871 replace_end = copy_end;
6ae996f2
JS
2872 } else {
2873 replace_end = store.parsed[j].end;
2874 copy_end = store.parsed[j].begin;
22aedfcc 2875 if (!value)
a263ea84 2876 maybe_remove_section(&store,
22aedfcc
JS
2877 &copy_end,
2878 &replace_end, &i);
6ae996f2
JS
2879 /*
2880 * Swallow preceding white-space on the same
2881 * line.
2882 */
2883 while (copy_end > 0 ) {
2884 char c = contents[copy_end - 1];
2885
2886 if (isspace(c) && c != '\n')
2887 copy_end--;
2888 else
2889 break;
2890 }
2891 }
4ddba79d 2892
02e5ba4a
JK
2893 if (copy_end > 0 && contents[copy_end-1] != '\n')
2894 new_line = 1;
2895
4ddba79d
JS
2896 /* write the first part of the config */
2897 if (copy_end > copy_begin) {
93c1e079 2898 if (write_in_full(fd, contents + copy_begin,
efacf609 2899 copy_end - copy_begin) < 0)
93c1e079
JH
2900 goto write_err_out;
2901 if (new_line &&
06f46f23 2902 write_str_in_full(fd, "\n") < 0)
93c1e079 2903 goto write_err_out;
4ddba79d 2904 }
6ae996f2 2905 copy_begin = replace_end;
10bea152
JS
2906 }
2907
10bea152
JS
2908 /* write the pair (value == NULL means unset) */
2909 if (value != NULL) {
5221c315 2910 if (!store.section_seen) {
fee8572c 2911 if (write_section(fd, key, &store) < 0)
93c1e079 2912 goto write_err_out;
480c9e52 2913 }
fee8572c 2914 if (write_pair(fd, key, value, &store) < 0)
93c1e079 2915 goto write_err_out;
10bea152
JS
2916 }
2917
2918 /* write the rest of the config */
dc49cd76 2919 if (copy_begin < contents_sz)
93c1e079 2920 if (write_in_full(fd, contents + copy_begin,
efacf609 2921 contents_sz - copy_begin) < 0)
93c1e079 2922 goto write_err_out;
7a64592c
KB
2923
2924 munmap(contents, contents_sz);
2925 contents = NULL;
10bea152
JS
2926 }
2927
bfffb48c 2928 if (commit_lock_file(&lock) < 0) {
a769bfc7 2929 error_errno(_("could not write config file %s"), config_filename);
7a397419 2930 ret = CONFIG_NO_WRITE;
dafc88b1 2931 goto out_free;
10bea152
JS
2932 }
2933
dafc88b1
SH
2934 ret = 0;
2935
3c8687a7
TA
2936 /* Invalidate the config cache */
2937 git_config_clear();
2938
dafc88b1 2939out_free:
bfffb48c 2940 rollback_lock_file(&lock);
0a5f5759 2941 free(filename_buf);
3a1b3126
JK
2942 if (contents)
2943 munmap(contents, contents_sz);
54d160ec
SS
2944 if (in_fd >= 0)
2945 close(in_fd);
2a00e594 2946 config_store_data_clear(&store);
dafc88b1 2947 return ret;
93c1e079
JH
2948
2949write_err_out:
bfffb48c 2950 ret = write_error(get_lock_file_path(&lock));
93c1e079
JH
2951 goto out_free;
2952
10bea152
JS
2953}
2954
3d180648
PS
2955void git_config_set_multivar_in_file(const char *config_filename,
2956 const char *key, const char *value,
2957 const char *value_regex, int multi_replace)
b4c8aba6 2958{
1cae428e
JK
2959 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2960 value_regex, multi_replace))
2961 return;
2962 if (value)
8c3ca351 2963 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2964 else
2965 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2966}
2967
30598ad0
PS
2968int git_config_set_multivar_gently(const char *key, const char *value,
2969 const char *value_regex, int multi_replace)
5ec31182 2970{
30598ad0
PS
2971 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2972 multi_replace);
5ec31182
RR
2973}
2974
3d180648
PS
2975void git_config_set_multivar(const char *key, const char *value,
2976 const char *value_regex, int multi_replace)
5ec31182 2977{
3d180648
PS
2978 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2979 multi_replace);
5ec31182
RR
2980}
2981
118f8b24
PB
2982static int section_name_match (const char *buf, const char *name)
2983{
2984 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2985 if (buf[i] != '[')
2986 return 0;
2987 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2988 if (!dot && isspace(buf[i])) {
2989 dot = 1;
2990 if (name[j++] != '.')
2991 break;
2992 for (i++; isspace(buf[i]); i++)
2993 ; /* do nothing */
2994 if (buf[i] != '"')
2995 break;
2996 continue;
2997 }
2998 if (buf[i] == '\\' && dot)
2999 i++;
3000 else if (buf[i] == '"' && dot) {
3001 for (i++; isspace(buf[i]); i++)
3002 ; /* do_nothing */
3003 break;
3004 }
3005 if (buf[i] != name[j++])
3006 break;
3007 }
a4c0d463
AV
3008 if (buf[i] == ']' && name[j] == 0) {
3009 /*
3010 * We match, now just find the right length offset by
3011 * gobbling up any whitespace after it, as well
3012 */
3013 i++;
3014 for (; buf[i] && isspace(buf[i]); i++)
3015 ; /* do nothing */
3016 return i;
3017 }
3018 return 0;
118f8b24
PB
3019}
3020
94a35b1a
JK
3021static int section_name_is_ok(const char *name)
3022{
3023 /* Empty section names are bogus. */
3024 if (!*name)
3025 return 0;
3026
3027 /*
3028 * Before a dot, we must be alphanumeric or dash. After the first dot,
3029 * anything goes, so we can stop checking.
3030 */
3031 for (; *name && *name != '.'; name++)
3032 if (*name != '-' && !isalnum(*name))
3033 return 0;
3034 return 1;
3035}
3036
118f8b24 3037/* if new_name == NULL, the section is removed instead */
52d59cc6 3038static int git_config_copy_or_rename_section_in_file(const char *config_filename,
fee8572c
JS
3039 const char *old_name,
3040 const char *new_name, int copy)
0667fcfb 3041{
118f8b24 3042 int ret = 0, remove = 0;
42bd39b5 3043 char *filename_buf = NULL;
837e34eb 3044 struct lock_file lock = LOCK_INIT;
0667fcfb
JS
3045 int out_fd;
3046 char buf[1024];
4db7dbdb 3047 FILE *config_file = NULL;
daa22c6f 3048 struct stat st;
52d59cc6 3049 struct strbuf copystr = STRBUF_INIT;
fee8572c
JS
3050 struct config_store_data store;
3051
3052 memset(&store, 0, sizeof(store));
0667fcfb 3053
94a35b1a 3054 if (new_name && !section_name_is_ok(new_name)) {
a769bfc7 3055 ret = error(_("invalid section name: %s"), new_name);
c06fa62d 3056 goto out_no_rollback;
94a35b1a
JK
3057 }
3058
42bd39b5
JK
3059 if (!config_filename)
3060 config_filename = filename_buf = git_pathdup("config");
3061
837e34eb 3062 out_fd = hold_lock_file_for_update(&lock, config_filename, 0);
fc1905bb 3063 if (out_fd < 0) {
a769bfc7 3064 ret = error(_("could not lock config file %s"), config_filename);
fc1905bb
JH
3065 goto out;
3066 }
0667fcfb 3067
fc1905bb 3068 if (!(config_file = fopen(config_filename, "rb"))) {
11dc1fcb
NTND
3069 ret = warn_on_fopen_errors(config_filename);
3070 if (ret)
3071 goto out;
01ebb9dc 3072 /* no config file means nothing to rename, no error */
6e45b43f 3073 goto commit_and_out;
fc1905bb 3074 }
0667fcfb 3075
29647d79
NTND
3076 if (fstat(fileno(config_file), &st) == -1) {
3077 ret = error_errno(_("fstat on %s failed"), config_filename);
3078 goto out;
3079 }
daa22c6f 3080
837e34eb 3081 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
a769bfc7 3082 ret = error_errno(_("chmod on %s failed"),
837e34eb 3083 get_lock_file_path(&lock));
daa22c6f
EW
3084 goto out;
3085 }
3086
0667fcfb
JS
3087 while (fgets(buf, sizeof(buf), config_file)) {
3088 int i;
480c9e52 3089 int length;
52d59cc6 3090 int is_section = 0;
9a5abfc7 3091 char *output = buf;
0667fcfb
JS
3092 for (i = 0; buf[i] && isspace(buf[i]); i++)
3093 ; /* do nothing */
3094 if (buf[i] == '[') {
3095 /* it's a section */
52d59cc6
SD
3096 int offset;
3097 is_section = 1;
3098
3099 /*
3100 * When encountering a new section under -c we
3101 * need to flush out any section we're already
3102 * coping and begin anew. There might be
3103 * multiple [branch "$name"] sections.
3104 */
3105 if (copystr.len > 0) {
c5e3bc6e 3106 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
0b646bca 3107 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3108 goto out;
3109 }
3110 strbuf_reset(&copystr);
3111 }
3112
3113 offset = section_name_match(&buf[i], old_name);
a4c0d463 3114 if (offset > 0) {
118f8b24
PB
3115 ret++;
3116 if (new_name == NULL) {
3117 remove = 1;
0667fcfb
JS
3118 continue;
3119 }
0667fcfb 3120 store.baselen = strlen(new_name);
52d59cc6 3121 if (!copy) {
fee8572c 3122 if (write_section(out_fd, new_name, &store) < 0) {
0b646bca 3123 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3124 goto out;
3125 }
9a5abfc7 3126 /*
52d59cc6
SD
3127 * We wrote out the new section, with
3128 * a newline, now skip the old
3129 * section's length
9a5abfc7 3130 */
52d59cc6
SD
3131 output += offset + i;
3132 if (strlen(output) > 0) {
3133 /*
3134 * More content means there's
3135 * a declaration to put on the
3136 * next line; indent with a
3137 * tab
3138 */
3139 output -= 1;
3140 output[0] = '\t';
3141 }
3142 } else {
fee8572c 3143 copystr = store_create_section(new_name, &store);
9a5abfc7 3144 }
0667fcfb 3145 }
118f8b24 3146 remove = 0;
0667fcfb 3147 }
118f8b24
PB
3148 if (remove)
3149 continue;
9a5abfc7 3150 length = strlen(output);
52d59cc6
SD
3151
3152 if (!is_section && copystr.len > 0) {
3153 strbuf_add(&copystr, output, length);
3154 }
3155
06f46f23 3156 if (write_in_full(out_fd, output, length) < 0) {
837e34eb 3157 ret = write_error(get_lock_file_path(&lock));
480c9e52
AW
3158 goto out;
3159 }
0667fcfb 3160 }
52d59cc6
SD
3161
3162 /*
3163 * Copy a trailing section at the end of the config, won't be
3164 * flushed by the usual "flush because we have a new section
3165 * logic in the loop above.
3166 */
3167 if (copystr.len > 0) {
c5e3bc6e 3168 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
0b646bca 3169 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3170 goto out;
3171 }
3172 strbuf_reset(&copystr);
3173 }
3174
fc1905bb 3175 fclose(config_file);
4db7dbdb 3176 config_file = NULL;
6e45b43f 3177commit_and_out:
837e34eb 3178 if (commit_lock_file(&lock) < 0)
a769bfc7 3179 ret = error_errno(_("could not write config file %s"),
f0658ec9 3180 config_filename);
8b590075 3181out:
4db7dbdb
JS
3182 if (config_file)
3183 fclose(config_file);
837e34eb 3184 rollback_lock_file(&lock);
c06fa62d 3185out_no_rollback:
42bd39b5 3186 free(filename_buf);
2a00e594 3187 config_store_data_clear(&store);
0667fcfb
JS
3188 return ret;
3189}
40ea4ed9 3190
52d59cc6
SD
3191int git_config_rename_section_in_file(const char *config_filename,
3192 const char *old_name, const char *new_name)
3193{
3194 return git_config_copy_or_rename_section_in_file(config_filename,
3195 old_name, new_name, 0);
3196}
3197
42bd39b5
JK
3198int git_config_rename_section(const char *old_name, const char *new_name)
3199{
4a7bb5ba 3200 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
3201}
3202
52d59cc6
SD
3203int git_config_copy_section_in_file(const char *config_filename,
3204 const char *old_name, const char *new_name)
3205{
3206 return git_config_copy_or_rename_section_in_file(config_filename,
3207 old_name, new_name, 1);
3208}
3209
3210int git_config_copy_section(const char *old_name, const char *new_name)
3211{
3212 return git_config_copy_section_in_file(NULL, old_name, new_name);
3213}
3214
40ea4ed9
JH
3215/*
3216 * Call this to report error for your variable that should not
3217 * get a boolean value (i.e. "[my] var" means "true").
3218 */
a469a101 3219#undef config_error_nonbool
40ea4ed9
JH
3220int config_error_nonbool(const char *var)
3221{
a769bfc7 3222 return error(_("missing value for '%s'"), var);
40ea4ed9 3223}
1b86bbb0
JK
3224
3225int parse_config_key(const char *var,
3226 const char *section,
3227 const char **subsection, int *subsection_len,
3228 const char **key)
3229{
1b86bbb0
JK
3230 const char *dot;
3231
3232 /* Does it start with "section." ? */
e3394fdc 3233 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
3234 return -1;
3235
3236 /*
3237 * Find the key; we don't know yet if we have a subsection, but we must
3238 * parse backwards from the end, since the subsection may have dots in
3239 * it, too.
3240 */
3241 dot = strrchr(var, '.');
3242 *key = dot + 1;
3243
3244 /* Did we have a subsection at all? */
e3394fdc 3245 if (dot == var) {
48f8d9f7
JK
3246 if (subsection) {
3247 *subsection = NULL;
3248 *subsection_len = 0;
3249 }
1b86bbb0
JK
3250 }
3251 else {
48f8d9f7
JK
3252 if (!subsection)
3253 return -1;
e3394fdc 3254 *subsection = var + 1;
1b86bbb0
JK
3255 *subsection_len = dot - *subsection;
3256 }
3257
3258 return 0;
3259}
473166b9
LS
3260
3261const char *current_config_origin_type(void)
3262{
1b8132d9 3263 int type;
0d44a2da
JK
3264 if (current_config_kvi)
3265 type = current_config_kvi->origin_type;
3266 else if(cf)
3267 type = cf->origin_type;
3268 else
033abf97 3269 BUG("current_config_origin_type called outside config callback");
1b8132d9
VA
3270
3271 switch (type) {
3272 case CONFIG_ORIGIN_BLOB:
3273 return "blob";
3274 case CONFIG_ORIGIN_FILE:
3275 return "file";
3276 case CONFIG_ORIGIN_STDIN:
3277 return "standard input";
3278 case CONFIG_ORIGIN_SUBMODULE_BLOB:
3279 return "submodule-blob";
3280 case CONFIG_ORIGIN_CMDLINE:
3281 return "command line";
3282 default:
033abf97 3283 BUG("unknown config origin type");
1b8132d9 3284 }
473166b9
LS
3285}
3286
3287const char *current_config_name(void)
3288{
0d44a2da
JK
3289 const char *name;
3290 if (current_config_kvi)
3291 name = current_config_kvi->filename;
3292 else if (cf)
3293 name = cf->name;
3294 else
033abf97 3295 BUG("current_config_name called outside config callback");
0d44a2da 3296 return name ? name : "";
473166b9 3297}
9acc5911
JK
3298
3299enum config_scope current_config_scope(void)
3300{
3301 if (current_config_kvi)
3302 return current_config_kvi->scope;
3303 else
3304 return current_parsing_scope;
473166b9 3305}
a73b3680
NTND
3306
3307int lookup_config(const char **mapping, int nr_mapping, const char *var)
3308{
3309 int i;
3310
3311 for (i = 0; i < nr_mapping; i++) {
3312 const char *name = mapping[i];
3313
3314 if (name && !strcasecmp(var, name))
3315 return i;
3316 }
3317 return -1;
3318}