config: don't multiply in parse_unit_factor()
[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"
17712991 22
4d8dd149
HV
23struct config_source {
24 struct config_source *prev;
25 union {
26 FILE *file;
1bc88819
HV
27 struct config_buf {
28 const char *buf;
29 size_t len;
30 size_t pos;
31 } buf;
4d8dd149 32 } u;
1b8132d9 33 enum config_origin_type origin_type;
924aaf3e 34 const char *name;
d14d4244 35 const char *path;
66f97228 36 enum config_error_action default_error_action;
924aaf3e
RJ
37 int linenr;
38 int eof;
39 struct strbuf value;
0971e992 40 struct strbuf var;
2d84f13d 41 unsigned subsection_case_sensitive : 1;
924aaf3e 42
49d6cfa5
JK
43 int (*do_fgetc)(struct config_source *c);
44 int (*do_ungetc)(int c, struct config_source *conf);
45 long (*do_ftell)(struct config_source *c);
4d8dd149
HV
46};
47
0d44a2da
JK
48/*
49 * These variables record the "current" config source, which
50 * can be accessed by parsing callbacks.
51 *
52 * The "cf" variable will be non-NULL only when we are actually parsing a real
53 * config source (file, blob, cmdline, etc).
54 *
55 * The "current_config_kvi" variable will be non-NULL only when we are feeding
56 * cached config from a configset into a callback.
57 *
58 * They should generally never be non-NULL at the same time. If they are both
59 * NULL, then we aren't parsing anything (and depending on the function looking
60 * at the variables, it's either a bug for it to be called in the first place,
61 * or it's a function which can be reused for non-config purposes, and should
62 * fall back to some sane behavior).
63 */
4d8dd149 64static struct config_source *cf;
0d44a2da 65static struct key_value_info *current_config_kvi;
924aaf3e 66
9acc5911
JK
67/*
68 * Similar to the variables above, this gives access to the "scope" of the
69 * current value (repo, global, etc). For cached values, it can be found via
70 * the current_config_kvi as above. During parsing, the current value can be
71 * found in this variable. It's not part of "cf" because it transcends a single
72 * file (i.e., a file included from .git/config is still in "repo" scope).
73 */
74static enum config_scope current_parsing_scope;
924aaf3e 75
8de7eeb5
JH
76static int core_compression_seen;
77static int pack_compression_seen;
960ccca6
DH
78static int zlib_compression_seen;
79
4d8dd149
HV
80static int config_file_fgetc(struct config_source *conf)
81{
260d408e 82 return getc_unlocked(conf->u.file);
4d8dd149
HV
83}
84
85static int config_file_ungetc(int c, struct config_source *conf)
86{
87 return ungetc(c, conf->u.file);
88}
89
90static long config_file_ftell(struct config_source *conf)
91{
92 return ftell(conf->u.file);
93}
94
1bc88819
HV
95
96static int config_buf_fgetc(struct config_source *conf)
97{
98 if (conf->u.buf.pos < conf->u.buf.len)
99 return conf->u.buf.buf[conf->u.buf.pos++];
100
101 return EOF;
102}
103
104static int config_buf_ungetc(int c, struct config_source *conf)
105{
1d0655c1
JK
106 if (conf->u.buf.pos > 0) {
107 conf->u.buf.pos--;
108 if (conf->u.buf.buf[conf->u.buf.pos] != c)
033abf97 109 BUG("config_buf can only ungetc the same character");
1d0655c1
JK
110 return c;
111 }
1bc88819
HV
112
113 return EOF;
114}
115
116static long config_buf_ftell(struct config_source *conf)
117{
118 return conf->u.buf.pos;
119}
120
9b25a0b5 121#define MAX_INCLUDE_DEPTH 10
a769bfc7 122static const char include_depth_advice[] = N_(
9b25a0b5
JK
123"exceeded maximum include depth (%d) while including\n"
124" %s\n"
125"from\n"
126" %s\n"
27c929ed 127"This might be due to circular includes.");
9b25a0b5
JK
128static int handle_path_include(const char *path, struct config_include_data *inc)
129{
130 int ret = 0;
131 struct strbuf buf = STRBUF_INIT;
67beb600 132 char *expanded;
4c0a89fc 133
67beb600
JK
134 if (!path)
135 return config_error_nonbool("include.path");
136
4aad2f16 137 expanded = expand_user_path(path, 0);
4c0a89fc 138 if (!expanded)
a769bfc7 139 return error(_("could not expand include path '%s'"), path);
4c0a89fc 140 path = expanded;
9b25a0b5
JK
141
142 /*
143 * Use an absolute path as-is, but interpret relative paths
144 * based on the including config file.
145 */
146 if (!is_absolute_path(path)) {
147 char *slash;
148
d14d4244 149 if (!cf || !cf->path)
a769bfc7 150 return error(_("relative config includes must come from files"));
9b25a0b5 151
d14d4244 152 slash = find_last_dir_sep(cf->path);
9b25a0b5 153 if (slash)
d14d4244 154 strbuf_add(&buf, cf->path, slash - cf->path + 1);
9b25a0b5
JK
155 strbuf_addstr(&buf, path);
156 path = buf.buf;
157 }
158
4698c8fe 159 if (!access_or_die(path, R_OK, 0)) {
9b25a0b5 160 if (++inc->depth > MAX_INCLUDE_DEPTH)
a769bfc7 161 die(_(include_depth_advice), MAX_INCLUDE_DEPTH, path,
3258258f
JK
162 !cf ? "<unknown>" :
163 cf->name ? cf->name :
164 "the command line");
9b25a0b5
JK
165 ret = git_config_from_file(git_config_include, path, inc);
166 inc->depth--;
167 }
168 strbuf_release(&buf);
4c0a89fc 169 free(expanded);
9b25a0b5
JK
170 return ret;
171}
172
3efd0bed
NTND
173static int prepare_include_condition_pattern(struct strbuf *pat)
174{
175 struct strbuf path = STRBUF_INIT;
176 char *expanded;
177 int prefix = 0;
178
86f95157 179 expanded = expand_user_path(pat->buf, 1);
3efd0bed
NTND
180 if (expanded) {
181 strbuf_reset(pat);
182 strbuf_addstr(pat, expanded);
183 free(expanded);
184 }
185
186 if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
187 const char *slash;
188
189 if (!cf || !cf->path)
190 return error(_("relative config include "
191 "conditionals must come from files"));
192
86f95157 193 strbuf_realpath(&path, cf->path, 1);
3efd0bed
NTND
194 slash = find_last_dir_sep(path.buf);
195 if (!slash)
033abf97 196 BUG("how is this possible?");
3efd0bed
NTND
197 strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
198 prefix = slash - path.buf + 1 /* slash */;
199 } else if (!is_absolute_path(pat->buf))
200 strbuf_insert(pat, 0, "**/", 3);
201
202 if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
203 strbuf_addstr(pat, "**");
204
205 strbuf_release(&path);
206 return prefix;
207}
208
2185fde5
NTND
209static int include_by_gitdir(const struct config_options *opts,
210 const char *cond, size_t cond_len, int icase)
3efd0bed
NTND
211{
212 struct strbuf text = STRBUF_INIT;
213 struct strbuf pattern = STRBUF_INIT;
214 int ret = 0, prefix;
2185fde5 215 const char *git_dir;
0624c63c 216 int already_tried_absolute = 0;
3efd0bed 217
2185fde5
NTND
218 if (opts->git_dir)
219 git_dir = opts->git_dir;
2185fde5
NTND
220 else
221 goto done;
222
c9672ba4 223 strbuf_realpath(&text, git_dir, 1);
3efd0bed
NTND
224 strbuf_add(&pattern, cond, cond_len);
225 prefix = prepare_include_condition_pattern(&pattern);
226
0624c63c 227again:
3efd0bed
NTND
228 if (prefix < 0)
229 goto done;
230
231 if (prefix > 0) {
232 /*
233 * perform literal matching on the prefix part so that
234 * any wildcard character in it can't create side effects.
235 */
236 if (text.len < prefix)
237 goto done;
238 if (!icase && strncmp(pattern.buf, text.buf, prefix))
239 goto done;
240 if (icase && strncasecmp(pattern.buf, text.buf, prefix))
241 goto done;
242 }
243
244 ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
19e7fdaa 245 WM_PATHNAME | (icase ? WM_CASEFOLD : 0));
3efd0bed 246
0624c63c
ÆAB
247 if (!ret && !already_tried_absolute) {
248 /*
249 * We've tried e.g. matching gitdir:~/work, but if
250 * ~/work is a symlink to /mnt/storage/work
251 * strbuf_realpath() will expand it, so the rule won't
252 * match. Let's match against a
253 * strbuf_add_absolute_path() version of the path,
254 * which'll do the right thing
255 */
256 strbuf_reset(&text);
257 strbuf_add_absolute_path(&text, git_dir);
258 already_tried_absolute = 1;
259 goto again;
260 }
3efd0bed
NTND
261done:
262 strbuf_release(&pattern);
263 strbuf_release(&text);
264 return ret;
265}
266
2185fde5
NTND
267static int include_condition_is_true(const struct config_options *opts,
268 const char *cond, size_t cond_len)
3efd0bed
NTND
269{
270
271 if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
2185fde5 272 return include_by_gitdir(opts, cond, cond_len, 0);
3efd0bed 273 else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
2185fde5 274 return include_by_gitdir(opts, cond, cond_len, 1);
3efd0bed
NTND
275
276 /* unknown conditionals are always false */
277 return 0;
278}
279
9b25a0b5
JK
280int git_config_include(const char *var, const char *value, void *data)
281{
282 struct config_include_data *inc = data;
3efd0bed
NTND
283 const char *cond, *key;
284 int cond_len;
9b25a0b5
JK
285 int ret;
286
287 /*
288 * Pass along all values, including "include" directives; this makes it
289 * possible to query information on the includes themselves.
290 */
291 ret = inc->fn(var, value, inc->data);
292 if (ret < 0)
293 return ret;
294
37007c3a 295 if (!strcmp(var, "include.path"))
9b25a0b5 296 ret = handle_path_include(value, inc);
3efd0bed
NTND
297
298 if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
2185fde5 299 (cond && include_condition_is_true(inc->opts, cond, cond_len)) &&
3efd0bed
NTND
300 !strcmp(key, "path"))
301 ret = handle_path_include(value, inc);
302
9b25a0b5
JK
303 return ret;
304}
305
2b64fc89
JK
306void git_config_push_parameter(const char *text)
307{
308 struct strbuf env = STRBUF_INIT;
309 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
d1f88498 310 if (old && *old) {
2b64fc89
JK
311 strbuf_addstr(&env, old);
312 strbuf_addch(&env, ' ');
313 }
314 sq_quote_buf(&env, text);
315 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
316 strbuf_release(&env);
317}
318
ee98df3f
JH
319static inline int iskeychar(int c)
320{
321 return isalnum(c) || c == '-';
322}
323
324/*
325 * Auxiliary function to sanity-check and split the key into the section
326 * identifier and variable name.
327 *
328 * Returns 0 on success, -1 when there is an invalid character in the key and
329 * -2 if there is no section name in the key.
330 *
331 * store_key - pointer to char* which will hold a copy of the key with
332 * lowercase section and variable name
333 * baselen - pointer to int which will hold the length of the
334 * section + subsection part, can be NULL
335 */
336static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
337{
338 int i, dot, baselen;
339 const char *last_dot = strrchr(key, '.');
340
341 /*
342 * Since "key" actually contains the section name and the real
343 * key name separated by a dot, we have to know where the dot is.
344 */
345
346 if (last_dot == NULL || last_dot == key) {
347 if (!quiet)
a769bfc7 348 error(_("key does not contain a section: %s"), key);
ee98df3f
JH
349 return -CONFIG_NO_SECTION_OR_NAME;
350 }
351
352 if (!last_dot[1]) {
353 if (!quiet)
a769bfc7 354 error(_("key does not contain variable name: %s"), key);
ee98df3f
JH
355 return -CONFIG_NO_SECTION_OR_NAME;
356 }
357
358 baselen = last_dot - key;
359 if (baselen_)
360 *baselen_ = baselen;
361
362 /*
363 * Validate the key and while at it, lower case it for matching.
364 */
365 if (store_key)
366 *store_key = xmallocz(strlen(key));
367
368 dot = 0;
369 for (i = 0; key[i]; i++) {
370 unsigned char c = key[i];
371 if (c == '.')
372 dot = 1;
373 /* Leave the extended basename untouched.. */
374 if (!dot || i > baselen) {
375 if (!iskeychar(c) ||
376 (i == baselen + 1 && !isalpha(c))) {
377 if (!quiet)
a769bfc7 378 error(_("invalid key: %s"), key);
ee98df3f
JH
379 goto out_free_ret_1;
380 }
381 c = tolower(c);
382 } else if (c == '\n') {
383 if (!quiet)
a769bfc7 384 error(_("invalid key (newline): %s"), key);
ee98df3f
JH
385 goto out_free_ret_1;
386 }
387 if (store_key)
388 (*store_key)[i] = c;
389 }
390
391 return 0;
392
393out_free_ret_1:
394 if (store_key) {
6a83d902 395 FREE_AND_NULL(*store_key);
ee98df3f
JH
396 }
397 return -CONFIG_INVALID_KEY;
398}
399
400int git_config_parse_key(const char *key, char **store_key, int *baselen)
401{
402 return git_config_parse_key_1(key, store_key, baselen, 0);
403}
404
405int git_config_key_is_valid(const char *key)
406{
407 return !git_config_parse_key_1(key, NULL, NULL, 1);
408}
409
2496844b
JK
410int git_config_parse_parameter(const char *text,
411 config_fn_t fn, void *data)
8b1fa778 412{
a789ca70 413 const char *value;
1274a155 414 char *canonical_name;
572e4f6a 415 struct strbuf **pair;
1274a155 416 int ret;
a789ca70 417
f77bccae 418 pair = strbuf_split_str(text, '=', 2);
c5d6350b 419 if (!pair[0])
a769bfc7 420 return error(_("bogus config parameter: %s"), text);
a789ca70
JH
421
422 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
572e4f6a 423 strbuf_setlen(pair[0], pair[0]->len - 1);
a789ca70
JH
424 value = pair[1] ? pair[1]->buf : "";
425 } else {
426 value = NULL;
427 }
428
572e4f6a
AR
429 strbuf_trim(pair[0]);
430 if (!pair[0]->len) {
431 strbuf_list_free(pair);
a769bfc7 432 return error(_("bogus config parameter: %s"), text);
8b1fa778 433 }
1274a155
JH
434
435 if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
436 ret = -1;
437 } else {
438 ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
439 free(canonical_name);
572e4f6a
AR
440 }
441 strbuf_list_free(pair);
1274a155 442 return ret;
8b1fa778
AR
443}
444
06eb708f
JK
445int git_config_from_parameters(config_fn_t fn, void *data)
446{
2b64fc89 447 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
a77d6db6 448 int ret = 0;
2b64fc89
JK
449 char *envw;
450 const char **argv = NULL;
451 int nr = 0, alloc = 0;
452 int i;
3258258f 453 struct config_source source;
2b64fc89
JK
454
455 if (!env)
456 return 0;
3258258f
JK
457
458 memset(&source, 0, sizeof(source));
459 source.prev = cf;
1b8132d9 460 source.origin_type = CONFIG_ORIGIN_CMDLINE;
3258258f
JK
461 cf = &source;
462
2b64fc89
JK
463 /* sq_dequote will write over it */
464 envw = xstrdup(env);
465
466 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
a769bfc7 467 ret = error(_("bogus format in %s"), CONFIG_DATA_ENVIRONMENT);
a77d6db6 468 goto out;
2b64fc89
JK
469 }
470
471 for (i = 0; i < nr; i++) {
06eb708f 472 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
a77d6db6
JK
473 ret = -1;
474 goto out;
2b64fc89
JK
475 }
476 }
477
a77d6db6 478out:
2b64fc89
JK
479 free(argv);
480 free(envw);
3258258f 481 cf = source.prev;
a77d6db6 482 return ret;
2b64fc89
JK
483}
484
17712991
LT
485static int get_next_char(void)
486{
49d6cfa5 487 int c = cf->do_fgetc(cf);
17712991 488
dbb9a812
HV
489 if (c == '\r') {
490 /* DOS like systems */
49d6cfa5 491 c = cf->do_fgetc(cf);
dbb9a812 492 if (c != '\n') {
5e0be134
JK
493 if (c != EOF)
494 cf->do_ungetc(c, cf);
dbb9a812 495 c = '\r';
17712991
LT
496 }
497 }
dbb9a812
HV
498 if (c == '\n')
499 cf->linenr++;
500 if (c == EOF) {
501 cf->eof = 1;
b3b3f60b 502 cf->linenr++;
dbb9a812
HV
503 c = '\n';
504 }
17712991
LT
505 return c;
506}
507
508static char *parse_value(void)
509{
e96c19c5 510 int quote = 0, comment = 0, space = 0;
17712991 511
924aaf3e 512 strbuf_reset(&cf->value);
17712991
LT
513 for (;;) {
514 int c = get_next_char();
17712991 515 if (c == '\n') {
4b340593
MS
516 if (quote) {
517 cf->linenr--;
17712991 518 return NULL;
4b340593 519 }
924aaf3e 520 return cf->value.buf;
17712991
LT
521 }
522 if (comment)
523 continue;
524 if (isspace(c) && !quote) {
924aaf3e 525 if (cf->value.len)
ebdaae37 526 space++;
17712991
LT
527 continue;
528 }
7ebdba61
JS
529 if (!quote) {
530 if (c == ';' || c == '#') {
531 comment = 1;
532 continue;
533 }
534 }
ebdaae37 535 for (; space; space--)
924aaf3e 536 strbuf_addch(&cf->value, ' ');
17712991
LT
537 if (c == '\\') {
538 c = get_next_char();
539 switch (c) {
540 case '\n':
541 continue;
542 case 't':
543 c = '\t';
544 break;
545 case 'b':
546 c = '\b';
547 break;
548 case 'n':
549 c = '\n';
550 break;
5cbb401d
LT
551 /* Some characters escape as themselves */
552 case '\\': case '"':
553 break;
554 /* Reject unknown escape sequences */
555 default:
556 return NULL;
17712991 557 }
924aaf3e 558 strbuf_addch(&cf->value, c);
17712991
LT
559 continue;
560 }
561 if (c == '"') {
562 quote = 1-quote;
563 continue;
564 }
924aaf3e 565 strbuf_addch(&cf->value, c);
17712991
LT
566 }
567}
568
0971e992 569static int get_value(config_fn_t fn, void *data, struct strbuf *name)
17712991
LT
570{
571 int c;
572 char *value;
b3b3f60b 573 int ret;
17712991
LT
574
575 /* Get the full name */
576 for (;;) {
577 c = get_next_char();
924aaf3e 578 if (cf->eof)
17712991 579 break;
38c5afa8 580 if (!iskeychar(c))
17712991 581 break;
0971e992 582 strbuf_addch(name, tolower(c));
17712991 583 }
0971e992 584
17712991
LT
585 while (c == ' ' || c == '\t')
586 c = get_next_char();
587
588 value = NULL;
589 if (c != '\n') {
590 if (c != '=')
591 return -1;
592 value = parse_value();
593 if (!value)
594 return -1;
595 }
b3b3f60b
MM
596 /*
597 * We already consumed the \n, but we need linenr to point to
598 * the line we just parsed during the call to fn to get
599 * accurate line number in error messages.
600 */
601 cf->linenr--;
602 ret = fn(name->buf, value, data);
e2e14251
JS
603 if (ret >= 0)
604 cf->linenr++;
b3b3f60b 605 return ret;
17712991
LT
606}
607
0971e992 608static int get_extended_base_var(struct strbuf *name, int c)
d14f7764 609{
2d84f13d 610 cf->subsection_case_sensitive = 0;
d14f7764
LT
611 do {
612 if (c == '\n')
4b340593 613 goto error_incomplete_line;
d14f7764
LT
614 c = get_next_char();
615 } while (isspace(c));
616
617 /* We require the format to be '[base "extension"]' */
618 if (c != '"')
619 return -1;
0971e992 620 strbuf_addch(name, '.');
d14f7764
LT
621
622 for (;;) {
623 int c = get_next_char();
624 if (c == '\n')
4b340593 625 goto error_incomplete_line;
d14f7764
LT
626 if (c == '"')
627 break;
628 if (c == '\\') {
629 c = get_next_char();
630 if (c == '\n')
4b340593 631 goto error_incomplete_line;
d14f7764 632 }
0971e992 633 strbuf_addch(name, c);
d14f7764
LT
634 }
635
636 /* Final ']' */
637 if (get_next_char() != ']')
638 return -1;
0971e992 639 return 0;
4b340593
MS
640error_incomplete_line:
641 cf->linenr--;
642 return -1;
d14f7764
LT
643}
644
0971e992 645static int get_base_var(struct strbuf *name)
17712991 646{
2d84f13d 647 cf->subsection_case_sensitive = 1;
17712991
LT
648 for (;;) {
649 int c = get_next_char();
924aaf3e 650 if (cf->eof)
17712991
LT
651 return -1;
652 if (c == ']')
0971e992 653 return 0;
d14f7764 654 if (isspace(c))
0971e992 655 return get_extended_base_var(name, c);
38c5afa8 656 if (!iskeychar(c) && c != '.')
17712991 657 return -1;
0971e992 658 strbuf_addch(name, tolower(c));
17712991
LT
659 }
660}
661
8032cc44
JS
662struct parse_event_data {
663 enum config_event_t previous_type;
664 size_t previous_offset;
665 const struct config_options *opts;
666};
667
668static int do_event(enum config_event_t type, struct parse_event_data *data)
669{
670 size_t offset;
671
672 if (!data->opts || !data->opts->event_fn)
673 return 0;
674
675 if (type == CONFIG_EVENT_WHITESPACE &&
676 data->previous_type == type)
677 return 0;
678
679 offset = cf->do_ftell(cf);
680 /*
681 * At EOF, the parser always "inserts" an extra '\n', therefore
682 * the end offset of the event is the current file position, otherwise
683 * we will already have advanced to the next event.
684 */
685 if (type != CONFIG_EVENT_EOF)
686 offset--;
687
688 if (data->previous_type != CONFIG_EVENT_EOF &&
689 data->opts->event_fn(data->previous_type, data->previous_offset,
690 offset, data->opts->event_fn_data) < 0)
691 return -1;
692
693 data->previous_type = type;
694 data->previous_offset = offset;
695
696 return 0;
697}
698
699static int git_parse_source(config_fn_t fn, void *data,
700 const struct config_options *opts)
17712991
LT
701{
702 int comment = 0;
703 int baselen = 0;
0971e992 704 struct strbuf *var = &cf->var;
1b8132d9
VA
705 int error_return = 0;
706 char *error_msg = NULL;
17712991 707
de056402 708 /* U+FEFF Byte Order Mark in UTF8 */
599446dc 709 const char *bomptr = utf8_bom;
de056402 710
8032cc44
JS
711 /* For the parser event callback */
712 struct parse_event_data event_data = {
713 CONFIG_EVENT_EOF, 0, opts
714 };
715
17712991 716 for (;;) {
8032cc44
JS
717 int c;
718
719 c = get_next_char();
de056402
PB
720 if (bomptr && *bomptr) {
721 /* We are at the file beginning; skip UTF8-encoded BOM
722 * if present. Sane editors won't put this in on their
723 * own, but e.g. Windows Notepad will do it happily. */
599446dc 724 if (c == (*bomptr & 0377)) {
de056402
PB
725 bomptr++;
726 continue;
727 } else {
728 /* Do not tolerate partial BOM. */
729 if (bomptr != utf8_bom)
730 break;
731 /* No BOM at file beginning. Cool. */
732 bomptr = NULL;
733 }
734 }
17712991 735 if (c == '\n') {
8032cc44
JS
736 if (cf->eof) {
737 if (do_event(CONFIG_EVENT_EOF, &event_data) < 0)
738 return -1;
17712991 739 return 0;
8032cc44
JS
740 }
741 if (do_event(CONFIG_EVENT_WHITESPACE, &event_data) < 0)
742 return -1;
17712991
LT
743 comment = 0;
744 continue;
745 }
8032cc44 746 if (comment)
17712991 747 continue;
8032cc44
JS
748 if (isspace(c)) {
749 if (do_event(CONFIG_EVENT_WHITESPACE, &event_data) < 0)
750 return -1;
17712991 751 continue;
8032cc44 752 }
17712991 753 if (c == '#' || c == ';') {
8032cc44
JS
754 if (do_event(CONFIG_EVENT_COMMENT, &event_data) < 0)
755 return -1;
17712991
LT
756 comment = 1;
757 continue;
758 }
759 if (c == '[') {
8032cc44
JS
760 if (do_event(CONFIG_EVENT_SECTION, &event_data) < 0)
761 return -1;
762
0971e992
BW
763 /* Reset prior to determining a new stem */
764 strbuf_reset(var);
765 if (get_base_var(var) < 0 || var->len < 1)
17712991 766 break;
0971e992
BW
767 strbuf_addch(var, '.');
768 baselen = var->len;
17712991
LT
769 continue;
770 }
771 if (!isalpha(c))
772 break;
8032cc44
JS
773
774 if (do_event(CONFIG_EVENT_ENTRY, &event_data) < 0)
775 return -1;
776
0971e992
BW
777 /*
778 * Truncate the var name back to the section header
779 * stem prior to grabbing the suffix part of the name
780 * and the value.
781 */
782 strbuf_setlen(var, baselen);
783 strbuf_addch(var, tolower(c));
784 if (get_value(fn, data, var) < 0)
17712991
LT
785 break;
786 }
1b8132d9 787
8032cc44
JS
788 if (do_event(CONFIG_EVENT_ERROR, &event_data) < 0)
789 return -1;
790
1b8132d9
VA
791 switch (cf->origin_type) {
792 case CONFIG_ORIGIN_BLOB:
793 error_msg = xstrfmt(_("bad config line %d in blob %s"),
794 cf->linenr, cf->name);
795 break;
796 case CONFIG_ORIGIN_FILE:
797 error_msg = xstrfmt(_("bad config line %d in file %s"),
798 cf->linenr, cf->name);
799 break;
800 case CONFIG_ORIGIN_STDIN:
801 error_msg = xstrfmt(_("bad config line %d in standard input"),
802 cf->linenr);
803 break;
804 case CONFIG_ORIGIN_SUBMODULE_BLOB:
805 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
806 cf->linenr, cf->name);
807 break;
808 case CONFIG_ORIGIN_CMDLINE:
809 error_msg = xstrfmt(_("bad config line %d in command line %s"),
810 cf->linenr, cf->name);
811 break;
812 default:
813 error_msg = xstrfmt(_("bad config line %d in %s"),
814 cf->linenr, cf->name);
815 }
816
66f97228
JK
817 switch (opts && opts->error_action ?
818 opts->error_action :
819 cf->default_error_action) {
820 case CONFIG_ERROR_DIE:
1b8132d9 821 die("%s", error_msg);
66f97228
JK
822 break;
823 case CONFIG_ERROR_ERROR:
1b8132d9 824 error_return = error("%s", error_msg);
66f97228 825 break;
63583203
JK
826 case CONFIG_ERROR_SILENT:
827 error_return = -1;
828 break;
66f97228
JK
829 case CONFIG_ERROR_UNSET:
830 BUG("config error action unset");
831 }
1b8132d9
VA
832
833 free(error_msg);
834 return error_return;
17712991
LT
835}
836
664178e8 837static int parse_unit_factor(const char *end, uintmax_t *factor)
0b87b6e0 838{
664178e8
RS
839 if (!*end) {
840 *factor = 1;
0b87b6e0 841 return 1;
664178e8 842 }
c8deb5a1 843 else if (!strcasecmp(end, "k")) {
664178e8 844 *factor = 1024;
c8deb5a1
SP
845 return 1;
846 }
847 else if (!strcasecmp(end, "m")) {
664178e8 848 *factor = 1024 * 1024;
c8deb5a1
SP
849 return 1;
850 }
851 else if (!strcasecmp(end, "g")) {
664178e8 852 *factor = 1024 * 1024 * 1024;
c8deb5a1
SP
853 return 1;
854 }
855 return 0;
0b87b6e0
BD
856}
857
7192777d 858static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
859{
860 if (value && *value) {
861 char *end;
ebaa1bd4
NA
862 intmax_t val;
863 uintmax_t uval;
664178e8 864 uintmax_t factor;
ebaa1bd4
NA
865
866 errno = 0;
867 val = strtoimax(value, &end, 0);
868 if (errno == ERANGE)
869 return 0;
33fdd77e
JK
870 if (!parse_unit_factor(end, &factor)) {
871 errno = EINVAL;
c8deb5a1 872 return 0;
33fdd77e 873 }
9dae4fe7 874 uval = val < 0 ? -val : val;
3fb72c7b
RS
875 if (unsigned_mult_overflows(factor, uval) ||
876 factor * uval > max) {
33fdd77e 877 errno = ERANGE;
ebaa1bd4 878 return 0;
33fdd77e 879 }
ebaa1bd4
NA
880 val *= factor;
881 *ret = val;
0b87b6e0
BD
882 return 1;
883 }
33fdd77e 884 errno = EINVAL;
0b87b6e0
BD
885 return 0;
886}
887
0b4dc661 888static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
889{
890 if (value && *value) {
891 char *end;
ebaa1bd4 892 uintmax_t val;
664178e8 893 uintmax_t factor;
ebaa1bd4
NA
894
895 errno = 0;
896 val = strtoumax(value, &end, 0);
897 if (errno == ERANGE)
898 return 0;
3fb72c7b 899 if (!parse_unit_factor(end, &factor)) {
33fdd77e 900 errno = EINVAL;
c8deb5a1 901 return 0;
33fdd77e 902 }
3fb72c7b
RS
903 if (unsigned_mult_overflows(factor, val) ||
904 factor * val > max) {
33fdd77e 905 errno = ERANGE;
ebaa1bd4 906 return 0;
33fdd77e 907 }
3fb72c7b 908 val *= factor;
c8deb5a1 909 *ret = val;
0b87b6e0 910 return 1;
17712991 911 }
33fdd77e 912 errno = EINVAL;
0b87b6e0
BD
913 return 0;
914}
915
42d194e9 916static int git_parse_int(const char *value, int *ret)
c1867cea 917{
7192777d 918 intmax_t tmp;
42d194e9 919 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
920 return 0;
921 *ret = tmp;
922 return 1;
923}
924
00160242
JK
925static int git_parse_int64(const char *value, int64_t *ret)
926{
927 intmax_t tmp;
928 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
929 return 0;
930 *ret = tmp;
931 return 1;
932}
933
7192777d
JK
934int git_parse_ulong(const char *value, unsigned long *ret)
935{
936 uintmax_t tmp;
937 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
938 return 0;
939 *ret = tmp;
940 return 1;
941}
942
c79edf73 943int git_parse_ssize_t(const char *value, ssize_t *ret)
37ee680d
DT
944{
945 intmax_t tmp;
946 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
947 return 0;
948 *ret = tmp;
949 return 1;
950}
951
06bdc23b 952NORETURN
2f666581 953static void die_bad_number(const char *name, const char *value)
c1867cea 954{
078fe305
JNA
955 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
956
2f666581
JK
957 if (!value)
958 value = "";
959
1b8132d9 960 if (!(cf && cf->name))
078fe305
JNA
961 die(_("bad numeric config value '%s' for '%s': %s"),
962 value, name, error_type);
1b8132d9
VA
963
964 switch (cf->origin_type) {
965 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
966 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
967 value, name, cf->name, error_type);
1b8132d9 968 case CONFIG_ORIGIN_FILE:
078fe305
JNA
969 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
970 value, name, cf->name, error_type);
1b8132d9 971 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
972 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
973 value, name, error_type);
1b8132d9 974 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
975 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
976 value, name, cf->name, error_type);
1b8132d9 977 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
978 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
979 value, name, cf->name, error_type);
1b8132d9 980 default:
078fe305
JNA
981 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
982 value, name, cf->name, error_type);
1b8132d9 983 }
c1867cea
JK
984}
985
0b87b6e0
BD
986int git_config_int(const char *name, const char *value)
987{
42d194e9
JK
988 int ret;
989 if (!git_parse_int(value, &ret))
2f666581 990 die_bad_number(name, value);
0b87b6e0
BD
991 return ret;
992}
993
00160242
JK
994int64_t git_config_int64(const char *name, const char *value)
995{
996 int64_t ret;
997 if (!git_parse_int64(value, &ret))
998 die_bad_number(name, value);
0b87b6e0
BD
999 return ret;
1000}
1001
1002unsigned long git_config_ulong(const char *name, const char *value)
1003{
1004 unsigned long ret;
1005 if (!git_parse_ulong(value, &ret))
2f666581 1006 die_bad_number(name, value);
0b87b6e0 1007 return ret;
17712991
LT
1008}
1009
37ee680d
DT
1010ssize_t git_config_ssize_t(const char *name, const char *value)
1011{
1012 ssize_t ret;
1013 if (!git_parse_ssize_t(value, &ret))
1014 die_bad_number(name, value);
1015 return ret;
1016}
1017
9be04d64 1018static int git_parse_maybe_bool_text(const char *value)
17712991
LT
1019{
1020 if (!value)
1021 return 1;
1022 if (!*value)
1023 return 0;
8420ccd8
JH
1024 if (!strcasecmp(value, "true")
1025 || !strcasecmp(value, "yes")
1026 || !strcasecmp(value, "on"))
17712991 1027 return 1;
8420ccd8
JH
1028 if (!strcasecmp(value, "false")
1029 || !strcasecmp(value, "no")
1030 || !strcasecmp(value, "off"))
17712991 1031 return 0;
8420ccd8
JH
1032 return -1;
1033}
1034
9be04d64 1035int git_parse_maybe_bool(const char *value)
b2be2f6a 1036{
9be04d64 1037 int v = git_parse_maybe_bool_text(value);
b2be2f6a
JK
1038 if (0 <= v)
1039 return v;
42d194e9 1040 if (git_parse_int(value, &v))
db6195ef 1041 return !!v;
b2be2f6a
JK
1042 return -1;
1043}
1044
8420ccd8
JH
1045int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
1046{
9be04d64 1047 int v = git_parse_maybe_bool_text(value);
8420ccd8
JH
1048 if (0 <= v) {
1049 *is_bool = 1;
1050 return v;
1051 }
a53f2ec6 1052 *is_bool = 0;
c35b0b58 1053 return git_config_int(name, value);
17712991
LT
1054}
1055
a53f2ec6
JH
1056int git_config_bool(const char *name, const char *value)
1057{
1058 int discard;
c35b0b58 1059 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
1060}
1061
ea5105a5
CC
1062int git_config_string(const char **dest, const char *var, const char *value)
1063{
1064 if (!value)
1065 return config_error_nonbool(var);
1066 *dest = xstrdup(value);
1067 return 0;
1068}
1069
395de250
MM
1070int git_config_pathname(const char **dest, const char *var, const char *value)
1071{
1072 if (!value)
1073 return config_error_nonbool(var);
4aad2f16 1074 *dest = expand_user_path(value, 0);
395de250 1075 if (!*dest)
8262aaa2 1076 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
1077 return 0;
1078}
1079
5f967424
HM
1080int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *value)
1081{
1082 if (!value)
1083 return config_error_nonbool(var);
1084 if (parse_expiry_date(value, timestamp))
1085 return error(_("'%s' for '%s' is not a valid timestamp"),
1086 value, var);
1087 return 0;
1088}
1089
6d2f9acc
TB
1090int git_config_color(char *dest, const char *var, const char *value)
1091{
1092 if (!value)
1093 return config_error_nonbool(var);
1094 if (color_parse(value, dest) < 0)
1095 return -1;
1096 return 0;
1097}
1098
70fc5793 1099static int git_default_core_config(const char *var, const char *value, void *cb)
17712991
LT
1100{
1101 /* This needs a better name */
1102 if (!strcmp(var, "core.filemode")) {
1103 trust_executable_bit = git_config_bool(var, value);
1104 return 0;
1105 }
1ce4790b
AR
1106 if (!strcmp(var, "core.trustctime")) {
1107 trust_ctime = git_config_bool(var, value);
1108 return 0;
1109 }
c1b5d738 1110 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
1111 if (!strcasecmp(value, "default"))
1112 check_stat = 1;
1113 else if (!strcasecmp(value, "minimal"))
1114 check_stat = 0;
1115 }
17712991 1116
9378c161
JH
1117 if (!strcmp(var, "core.quotepath")) {
1118 quote_path_fully = git_config_bool(var, value);
1119 return 0;
1120 }
1121
78a8d641
JS
1122 if (!strcmp(var, "core.symlinks")) {
1123 has_symlinks = git_config_bool(var, value);
1124 return 0;
1125 }
1126
0a9b88b7
LT
1127 if (!strcmp(var, "core.ignorecase")) {
1128 ignore_case = git_config_bool(var, value);
1129 return 0;
1130 }
1131
64589a03
JH
1132 if (!strcmp(var, "core.attributesfile"))
1133 return git_config_pathname(&git_attributes_file, var, value);
1134
867ad08a
ÆAB
1135 if (!strcmp(var, "core.hookspath"))
1136 return git_config_pathname(&git_hooks_path, var, value);
1137
7d1864ce
JH
1138 if (!strcmp(var, "core.bare")) {
1139 is_bare_repository_cfg = git_config_bool(var, value);
1140 return 0;
1141 }
1142
5f73076c
JH
1143 if (!strcmp(var, "core.ignorestat")) {
1144 assume_unchanged = git_config_bool(var, value);
1145 return 0;
1146 }
1147
e388c738
JH
1148 if (!strcmp(var, "core.prefersymlinkrefs")) {
1149 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
1150 return 0;
1151 }
1152
6de08ae6 1153 if (!strcmp(var, "core.logallrefupdates")) {
341fb286
CW
1154 if (value && !strcasecmp(value, "always"))
1155 log_all_ref_updates = LOG_REFS_ALWAYS;
1156 else if (git_config_bool(var, value))
1157 log_all_ref_updates = LOG_REFS_NORMAL;
1158 else
1159 log_all_ref_updates = LOG_REFS_NONE;
6de08ae6
SP
1160 return 0;
1161 }
1162
2f8acdb3
JH
1163 if (!strcmp(var, "core.warnambiguousrefs")) {
1164 warn_ambiguous_refs = git_config_bool(var, value);
1165 return 0;
1166 }
1167
a71f09fe 1168 if (!strcmp(var, "core.abbrev")) {
48d5014d
JH
1169 if (!value)
1170 return config_error_nonbool(var);
1171 if (!strcasecmp(value, "auto"))
1172 default_abbrev = -1;
1173 else {
1174 int abbrev = git_config_int(var, value);
1175 if (abbrev < minimum_abbrev || abbrev > 40)
a769bfc7 1176 return error(_("abbrev length out of range: %d"), abbrev);
48d5014d
JH
1177 default_abbrev = abbrev;
1178 }
dce96489
LT
1179 return 0;
1180 }
1181
5b33cb1f
JK
1182 if (!strcmp(var, "core.disambiguate"))
1183 return set_disambiguate_hint_config(var, value);
1184
960ccca6 1185 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
1186 int level = git_config_int(var, value);
1187 if (level == -1)
1188 level = Z_DEFAULT_COMPRESSION;
1189 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1190 die(_("bad zlib compression level %d"), level);
12f6c308 1191 zlib_compression_level = level;
960ccca6
DH
1192 zlib_compression_seen = 1;
1193 return 0;
1194 }
1195
1196 if (!strcmp(var, "core.compression")) {
1197 int level = git_config_int(var, value);
1198 if (level == -1)
1199 level = Z_DEFAULT_COMPRESSION;
1200 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1201 die(_("bad zlib compression level %d"), level);
960ccca6
DH
1202 core_compression_level = level;
1203 core_compression_seen = 1;
1204 if (!zlib_compression_seen)
1205 zlib_compression_level = level;
8de7eeb5
JH
1206 if (!pack_compression_seen)
1207 pack_compression_level = level;
12f6c308
JBH
1208 return 0;
1209 }
1210
60bb8b14 1211 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 1212 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 1213 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
1214
1215 /* This value must be multiple of (pagesize * 2) */
1216 packed_git_window_size /= pgsz_x2;
1217 if (packed_git_window_size < 1)
1218 packed_git_window_size = 1;
1219 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
1220 return 0;
1221 }
1222
15366280 1223 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 1224 big_file_threshold = git_config_ulong(var, value);
15366280
JH
1225 return 0;
1226 }
1227
77ccc5bb 1228 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 1229 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
1230 return 0;
1231 }
1232
18bdec11 1233 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 1234 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
1235 return 0;
1236 }
1237
6c510bee 1238 if (!strcmp(var, "core.autocrlf")) {
d7f46334 1239 if (value && !strcasecmp(value, "input")) {
fd6cce9e 1240 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
1241 return 0;
1242 }
6c510bee
LT
1243 auto_crlf = git_config_bool(var, value);
1244 return 0;
1245 }
1246
21e5ad50 1247 if (!strcmp(var, "core.safecrlf")) {
8462ff43 1248 int eol_rndtrp_die;
21e5ad50 1249 if (value && !strcasecmp(value, "warn")) {
8462ff43 1250 global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
21e5ad50
SP
1251 return 0;
1252 }
8462ff43
TB
1253 eol_rndtrp_die = git_config_bool(var, value);
1254 global_conv_flags_eol = eol_rndtrp_die ?
6cb09125 1255 CONV_EOL_RNDTRP_DIE : 0;
21e5ad50
SP
1256 return 0;
1257 }
1258
942e7747
EB
1259 if (!strcmp(var, "core.eol")) {
1260 if (value && !strcasecmp(value, "lf"))
ec70f52f 1261 core_eol = EOL_LF;
942e7747 1262 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 1263 core_eol = EOL_CRLF;
942e7747 1264 else if (value && !strcasecmp(value, "native"))
ec70f52f 1265 core_eol = EOL_NATIVE;
942e7747 1266 else
ec70f52f 1267 core_eol = EOL_UNSET;
942e7747
EB
1268 return 0;
1269 }
1270
e92d6225
LS
1271 if (!strcmp(var, "core.checkroundtripencoding")) {
1272 check_roundtrip_encoding = xstrdup(value);
1273 return 0;
1274 }
1275
a97a7468
JS
1276 if (!strcmp(var, "core.notesref")) {
1277 notes_ref_name = xstrdup(value);
1278 return 0;
1279 }
1280
806e2ad7
LT
1281 if (!strcmp(var, "core.editor"))
1282 return git_config_string(&editor_program, var, value);
1283
eff80a9f 1284 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
1285 if (!value)
1286 return config_error_nonbool(var);
ad524f83 1287 else if (!strcasecmp(value, "auto"))
84c9dc2c 1288 auto_comment_line_char = 1;
ad524f83 1289 else if (value[0] && !value[1]) {
649409b7 1290 comment_line_char = value[0];
84c9dc2c 1291 auto_comment_line_char = 0;
50b54fd7 1292 } else
a769bfc7 1293 return error(_("core.commentChar should only be one character"));
50b54fd7 1294 return 0;
eff80a9f
JH
1295 }
1296
d3e7da89
AK
1297 if (!strcmp(var, "core.askpass"))
1298 return git_config_string(&askpass_program, var, value);
1299
806e2ad7 1300 if (!strcmp(var, "core.excludesfile"))
395de250 1301 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
1302
1303 if (!strcmp(var, "core.whitespace")) {
1304 if (!value)
1305 return config_error_nonbool(var);
1306 whitespace_rule_cfg = parse_whitespace_rule(value);
1307 return 0;
1308 }
1309
aafe9fba
LT
1310 if (!strcmp(var, "core.fsyncobjectfiles")) {
1311 fsync_object_files = git_config_bool(var, value);
1312 return 0;
1313 }
1314
671c9b7e
LT
1315 if (!strcmp(var, "core.preloadindex")) {
1316 core_preload_index = git_config_bool(var, value);
1317 return 0;
1318 }
1319
348df166
JS
1320 if (!strcmp(var, "core.createobject")) {
1321 if (!strcmp(value, "rename"))
1322 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1323 else if (!strcmp(value, "link"))
1324 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1325 else
8262aaa2 1326 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
1327 return 0;
1328 }
1329
08aefc9e
NTND
1330 if (!strcmp(var, "core.sparsecheckout")) {
1331 core_apply_sparse_checkout = git_config_bool(var, value);
1332 return 0;
1333 }
1334
76759c7d
TB
1335 if (!strcmp(var, "core.precomposeunicode")) {
1336 precomposed_unicode = git_config_bool(var, value);
1337 return 0;
1338 }
1339
a42643aa
JK
1340 if (!strcmp(var, "core.protecthfs")) {
1341 protect_hfs = git_config_bool(var, value);
1342 return 0;
1343 }
1344
2b4c6efc
JS
1345 if (!strcmp(var, "core.protectntfs")) {
1346 protect_ntfs = git_config_bool(var, value);
1347 return 0;
76759c7d
TB
1348 }
1349
1e1e39b3
JH
1350 if (!strcmp(var, "core.partialclonefilter")) {
1351 return git_config_string(&core_partial_clone_filter_default,
1352 var, value);
1353 }
1354
da4398d6
JK
1355 if (!strcmp(var, "core.usereplacerefs")) {
1356 read_replace_refs = git_config_bool(var, value);
1357 return 0;
1358 }
1359
806e2ad7 1360 /* Add other config variables here and to Documentation/config.txt. */
70fc5793 1361 return platform_core_config(var, value, cb);
806e2ad7
LT
1362}
1363
1141f492 1364static int git_default_i18n_config(const char *var, const char *value)
d1364529 1365{
ea5105a5
CC
1366 if (!strcmp(var, "i18n.commitencoding"))
1367 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1368
ea5105a5
CC
1369 if (!strcmp(var, "i18n.logoutputencoding"))
1370 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1371
1141f492
LT
1372 /* Add other config variables here and to Documentation/config.txt. */
1373 return 0;
1374}
039bc64e 1375
1141f492
LT
1376static int git_default_branch_config(const char *var, const char *value)
1377{
9ed36cfa
JS
1378 if (!strcmp(var, "branch.autosetupmerge")) {
1379 if (value && !strcasecmp(value, "always")) {
1380 git_branch_track = BRANCH_TRACK_ALWAYS;
1381 return 0;
1382 }
1383 git_branch_track = git_config_bool(var, value);
1384 return 0;
1385 }
c998ae9b
DS
1386 if (!strcmp(var, "branch.autosetuprebase")) {
1387 if (!value)
1388 return config_error_nonbool(var);
1389 else if (!strcmp(value, "never"))
1390 autorebase = AUTOREBASE_NEVER;
1391 else if (!strcmp(value, "local"))
1392 autorebase = AUTOREBASE_LOCAL;
1393 else if (!strcmp(value, "remote"))
1394 autorebase = AUTOREBASE_REMOTE;
1395 else if (!strcmp(value, "always"))
1396 autorebase = AUTOREBASE_ALWAYS;
1397 else
a769bfc7 1398 return error(_("malformed value for %s"), var);
c998ae9b
DS
1399 return 0;
1400 }
a9cc857a 1401
1ab661dd 1402 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1403 return 0;
1404}
1405
52153747
FAG
1406static int git_default_push_config(const char *var, const char *value)
1407{
1408 if (!strcmp(var, "push.default")) {
1409 if (!value)
1410 return config_error_nonbool(var);
1411 else if (!strcmp(value, "nothing"))
1412 push_default = PUSH_DEFAULT_NOTHING;
1413 else if (!strcmp(value, "matching"))
1414 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1415 else if (!strcmp(value, "simple"))
1416 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1417 else if (!strcmp(value, "upstream"))
1418 push_default = PUSH_DEFAULT_UPSTREAM;
1419 else if (!strcmp(value, "tracking")) /* deprecated */
1420 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1421 else if (!strcmp(value, "current"))
1422 push_default = PUSH_DEFAULT_CURRENT;
1423 else {
a769bfc7
NTND
1424 error(_("malformed value for %s: %s"), var, value);
1425 return error(_("must be one of nothing, matching, simple, "
1426 "upstream or current"));
52153747
FAG
1427 }
1428 return 0;
1429 }
1430
1431 /* Add other config variables here and to Documentation/config.txt. */
1432 return 0;
1433}
1434
d551a488
MSO
1435static int git_default_mailmap_config(const char *var, const char *value)
1436{
1437 if (!strcmp(var, "mailmap.file"))
9352fd57 1438 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1439 if (!strcmp(var, "mailmap.blob"))
1440 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1441
1442 /* Add other config variables here and to Documentation/config.txt. */
1443 return 0;
1444}
1445
409670f3 1446int git_default_config(const char *var, const char *value, void *cb)
1141f492 1447{
59556548 1448 if (starts_with(var, "core."))
70fc5793 1449 return git_default_core_config(var, value, cb);
1141f492 1450
39ab4d09
WH
1451 if (starts_with(var, "user.") ||
1452 starts_with(var, "author.") ||
1453 starts_with(var, "committer."))
409670f3 1454 return git_ident_config(var, value, cb);
1141f492 1455
59556548 1456 if (starts_with(var, "i18n."))
1141f492
LT
1457 return git_default_i18n_config(var, value);
1458
59556548 1459 if (starts_with(var, "branch."))
1141f492
LT
1460 return git_default_branch_config(var, value);
1461
59556548 1462 if (starts_with(var, "push."))
52153747
FAG
1463 return git_default_push_config(var, value);
1464
59556548 1465 if (starts_with(var, "mailmap."))
d551a488
MSO
1466 return git_default_mailmap_config(var, value);
1467
960786e7 1468 if (starts_with(var, "advice.") || starts_with(var, "color.advice"))
75194438
JK
1469 return git_default_advice_config(var, value);
1470
1141f492
LT
1471 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1472 pager_use_color = git_config_bool(var,value);
1473 return 0;
1474 }
1475
568508e7
JH
1476 if (!strcmp(var, "pack.packsizelimit")) {
1477 pack_size_limit_cfg = git_config_ulong(var, value);
1478 return 0;
1479 }
8de7eeb5
JH
1480
1481 if (!strcmp(var, "pack.compression")) {
1482 int level = git_config_int(var, value);
1483 if (level == -1)
1484 level = Z_DEFAULT_COMPRESSION;
1485 else if (level < 0 || level > Z_BEST_COMPRESSION)
1486 die(_("bad pack compression level %d"), level);
1487 pack_compression_level = level;
1488 pack_compression_seen = 1;
1489 return 0;
1490 }
1491
1141f492
LT
1492 /* Add other config variables here and to Documentation/config.txt. */
1493 return 0;
1494}
1495
ca4b5de2 1496/*
b2dc0945 1497 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1498 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1499 * this function.
1500 */
8032cc44
JS
1501static int do_config_from(struct config_source *top, config_fn_t fn, void *data,
1502 const struct config_options *opts)
ca4b5de2
HV
1503{
1504 int ret;
1505
1506 /* push config-file parsing state stack */
1507 top->prev = cf;
1508 top->linenr = 1;
1509 top->eof = 0;
1510 strbuf_init(&top->value, 1024);
1511 strbuf_init(&top->var, 1024);
1512 cf = top;
1513
8032cc44 1514 ret = git_parse_source(fn, data, opts);
ca4b5de2
HV
1515
1516 /* pop config-file parsing state stack */
1517 strbuf_release(&top->value);
1518 strbuf_release(&top->var);
1519 cf = top->prev;
1520
1521 return ret;
1522}
1523
3caec73b 1524static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1525 const enum config_origin_type origin_type,
1526 const char *name, const char *path, FILE *f,
8032cc44 1527 void *data, const struct config_options *opts)
17712991 1528{
3caec73b 1529 struct config_source top;
05e293c1 1530 int ret;
17712991 1531
3caec73b 1532 top.u.file = f;
473166b9 1533 top.origin_type = origin_type;
3caec73b
KS
1534 top.name = name;
1535 top.path = path;
66f97228 1536 top.default_error_action = CONFIG_ERROR_DIE;
3caec73b
KS
1537 top.do_fgetc = config_file_fgetc;
1538 top.do_ungetc = config_file_ungetc;
1539 top.do_ftell = config_file_ftell;
924aaf3e 1540
05e293c1 1541 flockfile(f);
4f4d0b42 1542 ret = do_config_from(&top, fn, data, opts);
05e293c1
JK
1543 funlockfile(f);
1544 return ret;
3caec73b 1545}
924aaf3e 1546
3caec73b
KS
1547static int git_config_from_stdin(config_fn_t fn, void *data)
1548{
8032cc44
JS
1549 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin,
1550 data, NULL);
3caec73b
KS
1551}
1552
8032cc44
JS
1553int git_config_from_file_with_options(config_fn_t fn, const char *filename,
1554 void *data,
1555 const struct config_options *opts)
3caec73b
KS
1556{
1557 int ret = -1;
1558 FILE *f;
924aaf3e 1559
e9d983f1 1560 f = fopen_or_warn(filename, "r");
3caec73b 1561 if (f) {
8032cc44
JS
1562 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename,
1563 filename, f, data, opts);
17712991
LT
1564 fclose(f);
1565 }
1566 return ret;
1567}
10bea152 1568
8032cc44
JS
1569int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1570{
1571 return git_config_from_file_with_options(fn, filename, data, NULL);
1572}
1573
4574f1aa
JK
1574int git_config_from_mem(config_fn_t fn,
1575 const enum config_origin_type origin_type,
1576 const char *name, const char *buf, size_t len,
1577 void *data, const struct config_options *opts)
1bc88819
HV
1578{
1579 struct config_source top;
1580
1581 top.u.buf.buf = buf;
1582 top.u.buf.len = len;
1583 top.u.buf.pos = 0;
473166b9 1584 top.origin_type = origin_type;
1bc88819 1585 top.name = name;
d14d4244 1586 top.path = NULL;
66f97228 1587 top.default_error_action = CONFIG_ERROR_ERROR;
49d6cfa5
JK
1588 top.do_fgetc = config_buf_fgetc;
1589 top.do_ungetc = config_buf_ungetc;
1590 top.do_ftell = config_buf_ftell;
1bc88819 1591
4574f1aa 1592 return do_config_from(&top, fn, data, opts);
1bc88819
HV
1593}
1594
cd73de47 1595int git_config_from_blob_oid(config_fn_t fn,
9ebf689a 1596 const char *name,
cd73de47 1597 const struct object_id *oid,
9ebf689a 1598 void *data)
1bc88819
HV
1599{
1600 enum object_type type;
1601 char *buf;
1602 unsigned long size;
1603 int ret;
1604
b4f5aca4 1605 buf = read_object_file(oid, &type, &size);
1bc88819 1606 if (!buf)
a769bfc7 1607 return error(_("unable to load config blob object '%s'"), name);
1bc88819
HV
1608 if (type != OBJ_BLOB) {
1609 free(buf);
a769bfc7 1610 return error(_("reference '%s' does not point to a blob"), name);
1bc88819
HV
1611 }
1612
4574f1aa
JK
1613 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size,
1614 data, NULL);
1bc88819
HV
1615 free(buf);
1616
1617 return ret;
1618}
1619
1620static int git_config_from_blob_ref(config_fn_t fn,
1621 const char *name,
1622 void *data)
1623{
cd73de47 1624 struct object_id oid;
1bc88819 1625
cd73de47 1626 if (get_oid(name, &oid) < 0)
a769bfc7 1627 return error(_("unable to resolve config blob '%s'"), name);
cd73de47 1628 return git_config_from_blob_oid(fn, name, &oid, data);
1bc88819
HV
1629}
1630
506b17b1
JS
1631const char *git_etc_gitconfig(void)
1632{
7f0e39fa 1633 static const char *system_wide;
2de9de5e
SP
1634 if (!system_wide)
1635 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1636 return system_wide;
506b17b1
JS
1637}
1638
23b0c478
SP
1639/*
1640 * Parse environment variable 'k' as a boolean (in various
1641 * possible spellings); if missing, use the default value 'def'.
1642 */
0ef37164 1643int git_env_bool(const char *k, int def)
ab88c363
JK
1644{
1645 const char *v = getenv(k);
1646 return v ? git_config_bool(k, v) : def;
1647}
1648
23b0c478
SP
1649/*
1650 * Parse environment variable 'k' as ulong with possibly a unit
1651 * suffix; if missing, use the default value 'val'.
1652 */
1653unsigned long git_env_ulong(const char *k, unsigned long val)
1654{
1655 const char *v = getenv(k);
1656 if (v && !git_parse_ulong(v, &val))
a769bfc7 1657 die(_("failed to parse %s"), k);
23b0c478
SP
1658 return val;
1659}
1660
ab88c363
JK
1661int git_config_system(void)
1662{
1663 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1664}
1665
e145a0bc
NTND
1666static int do_git_config_sequence(const struct config_options *opts,
1667 config_fn_t fn, void *data)
4f629539 1668{
c72ee44b 1669 int ret = 0;
509adc33 1670 char *xdg_config = xdg_config_home("config");
4aad2f16 1671 char *user_config = expand_user_path("~/.gitconfig", 0);
e145a0bc
NTND
1672 char *repo_config;
1673
a577fb5f
BW
1674 if (opts->commondir)
1675 repo_config = mkpathdup("%s/config", opts->commondir);
44004872
JS
1676 else if (opts->git_dir)
1677 BUG("git_dir without commondir");
e145a0bc
NTND
1678 else
1679 repo_config = NULL;
5f1a63e0 1680
9acc5911 1681 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
f672deec
JH
1682 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK,
1683 opts->system_gently ?
1684 ACCESS_EACCES_OK : 0))
dc871831
DB
1685 ret += git_config_from_file(fn, git_etc_gitconfig(),
1686 data);
5f1a63e0 1687
9acc5911 1688 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1689 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1690 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1691
c72ee44b 1692 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1693 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1694
9acc5911 1695 current_parsing_scope = CONFIG_SCOPE_REPO;
800a7f99
JH
1696 if (!opts->ignore_repo && repo_config &&
1697 !access_or_die(repo_config, R_OK, 0))
aa387407 1698 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1699
58b284a2
NTND
1700 /*
1701 * Note: this should have a new scope, CONFIG_SCOPE_WORKTREE.
1702 * But let's not complicate things before it's actually needed.
1703 */
800a7f99 1704 if (!opts->ignore_worktree && repository_format_worktree_config) {
58b284a2
NTND
1705 char *path = git_pathdup("config.worktree");
1706 if (!access_or_die(path, R_OK, 0))
1707 ret += git_config_from_file(fn, path, data);
1708 free(path);
1709 }
1710
9acc5911 1711 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
800a7f99 1712 if (!opts->ignore_cmdline && git_config_from_parameters(fn, data) < 0)
8262aaa2 1713 die(_("unable to parse command-line config"));
8b1fa778 1714
9acc5911 1715 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1716 free(xdg_config);
1717 free(user_config);
80181868 1718 free(repo_config);
c72ee44b 1719 return ret;
4f629539
JH
1720}
1721
dc8441fd
BW
1722int config_with_options(config_fn_t fn, void *data,
1723 struct git_config_source *config_source,
1724 const struct config_options *opts)
dbdf5854 1725{
9b25a0b5
JK
1726 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1727
c48f4b37 1728 if (opts->respect_includes) {
9b25a0b5
JK
1729 inc.fn = fn;
1730 inc.data = data;
c48f4b37 1731 inc.opts = opts;
9b25a0b5
JK
1732 fn = git_config_include;
1733 data = &inc;
1734 }
dbdf5854 1735
c9b5e2a5
JK
1736 /*
1737 * If we have a specific filename, use it. Otherwise, follow the
1738 * regular lookup sequence.
1739 */
3caec73b
KS
1740 if (config_source && config_source->use_stdin)
1741 return git_config_from_stdin(fn, data);
1742 else if (config_source && config_source->file)
c8985ce0
KS
1743 return git_config_from_file(fn, config_source->file, data);
1744 else if (config_source && config_source->blob)
1745 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1746
e145a0bc 1747 return do_git_config_sequence(opts, fn, data);
dbdf5854
NTND
1748}
1749
155ef25f 1750static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1751{
155ef25f
TA
1752 int i, value_index;
1753 struct string_list *values;
1754 struct config_set_element *entry;
1755 struct configset_list *list = &cs->list;
155ef25f
TA
1756
1757 for (i = 0; i < list->nr; i++) {
1758 entry = list->items[i].e;
1759 value_index = list->items[i].value_index;
1760 values = &entry->value_list;
0d44a2da
JK
1761
1762 current_config_kvi = values->items[value_index].util;
1763
1764 if (fn(entry->key, values->items[value_index].string, data) < 0)
1765 git_die_config_linenr(entry->key,
1766 current_config_kvi->filename,
1767 current_config_kvi->linenr);
1768
1769 current_config_kvi = NULL;
155ef25f
TA
1770 }
1771}
1772
0654aa57
JS
1773void read_early_config(config_fn_t cb, void *data)
1774{
c48f4b37 1775 struct config_options opts = {0};
d3fb71b3
BW
1776 struct strbuf commondir = STRBUF_INIT;
1777 struct strbuf gitdir = STRBUF_INIT;
1a27409a 1778
c48f4b37 1779 opts.respect_includes = 1;
0654aa57 1780
a577fb5f
BW
1781 if (have_git_dir()) {
1782 opts.commondir = get_git_common_dir();
2185fde5 1783 opts.git_dir = get_git_dir();
0654aa57 1784 /*
1a27409a
JS
1785 * When setup_git_directory() was not yet asked to discover the
1786 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1787 * is any repository config we should use (but unlike
1788 * setup_git_directory_gently(), no global state is changed, most
1789 * notably, the current working directory is still the same after the
1790 * call).
0654aa57 1791 */
a577fb5f
BW
1792 } else if (!discover_git_directory(&commondir, &gitdir)) {
1793 opts.commondir = commondir.buf;
d3fb71b3 1794 opts.git_dir = gitdir.buf;
a577fb5f 1795 }
2185fde5 1796
dc8441fd 1797 config_with_options(cb, data, NULL, &opts);
0654aa57 1798
d3fb71b3
BW
1799 strbuf_release(&commondir);
1800 strbuf_release(&gitdir);
0654aa57
JS
1801}
1802
800a7f99
JH
1803/*
1804 * Read config but only enumerate system and global settings.
1805 * Omit any repo-local, worktree-local, or command-line settings.
1806 */
1807void read_very_early_config(config_fn_t cb, void *data)
1808{
1809 struct config_options opts = { 0 };
1810
1811 opts.respect_includes = 1;
1812 opts.ignore_repo = 1;
1813 opts.ignore_worktree = 1;
1814 opts.ignore_cmdline = 1;
f672deec 1815 opts.system_gently = 1;
800a7f99
JH
1816
1817 config_with_options(cb, data, NULL, &opts);
1818}
1819
3c8687a7
TA
1820static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1821{
1822 struct config_set_element k;
1823 struct config_set_element *found_entry;
1824 char *normalized_key;
3c8687a7
TA
1825 /*
1826 * `key` may come from the user, so normalize it before using it
1827 * for querying entries from the hashmap.
1828 */
270cd9ea 1829 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1830 return NULL;
1831
1832 hashmap_entry_init(&k, strhash(normalized_key));
1833 k.key = normalized_key;
1834 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1835 free(normalized_key);
1836 return found_entry;
1837}
1838
1839static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1840{
1841 struct config_set_element *e;
3df8fd62 1842 struct string_list_item *si;
155ef25f 1843 struct configset_list_item *l_item;
3df8fd62
TA
1844 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1845
3c8687a7
TA
1846 e = configset_find_element(cs, key);
1847 /*
1848 * Since the keys are being fed by git_config*() callback mechanism, they
1849 * are already normalized. So simply add them without any further munging.
1850 */
1851 if (!e) {
1852 e = xmalloc(sizeof(*e));
1853 hashmap_entry_init(e, strhash(key));
1854 e->key = xstrdup(key);
1855 string_list_init(&e->value_list, 1);
1856 hashmap_add(&cs->config_hash, e);
1857 }
8c53f071 1858 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1859
1860 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1861 l_item = &cs->list.items[cs->list.nr++];
1862 l_item->e = e;
1863 l_item->value_index = e->value_list.nr - 1;
1864
3258258f 1865 if (!cf)
033abf97 1866 BUG("configset_add_value has no source");
3258258f 1867 if (cf->name) {
3df8fd62
TA
1868 kv_info->filename = strintern(cf->name);
1869 kv_info->linenr = cf->linenr;
1b8132d9 1870 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1871 } else {
1872 /* for values read from `git_config_from_parameters()` */
1873 kv_info->filename = NULL;
1874 kv_info->linenr = -1;
1b8132d9 1875 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1876 }
9acc5911 1877 kv_info->scope = current_parsing_scope;
3df8fd62 1878 si->util = kv_info;
3c8687a7
TA
1879
1880 return 0;
1881}
1882
7663cdc8 1883static int config_set_element_cmp(const void *unused_cmp_data,
77bdc097
SB
1884 const void *entry,
1885 const void *entry_or_key,
7663cdc8 1886 const void *unused_keydata)
3c8687a7 1887{
77bdc097
SB
1888 const struct config_set_element *e1 = entry;
1889 const struct config_set_element *e2 = entry_or_key;
1890
3c8687a7
TA
1891 return strcmp(e1->key, e2->key);
1892}
1893
1894void git_configset_init(struct config_set *cs)
1895{
77bdc097 1896 hashmap_init(&cs->config_hash, config_set_element_cmp, NULL, 0);
3c8687a7 1897 cs->hash_initialized = 1;
155ef25f
TA
1898 cs->list.nr = 0;
1899 cs->list.alloc = 0;
1900 cs->list.items = NULL;
3c8687a7
TA
1901}
1902
1903void git_configset_clear(struct config_set *cs)
1904{
1905 struct config_set_element *entry;
1906 struct hashmap_iter iter;
1907 if (!cs->hash_initialized)
1908 return;
1909
1910 hashmap_iter_init(&cs->config_hash, &iter);
1911 while ((entry = hashmap_iter_next(&iter))) {
1912 free(entry->key);
3df8fd62 1913 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1914 }
1915 hashmap_free(&cs->config_hash, 1);
1916 cs->hash_initialized = 0;
155ef25f
TA
1917 free(cs->list.items);
1918 cs->list.nr = 0;
1919 cs->list.alloc = 0;
1920 cs->list.items = NULL;
3c8687a7
TA
1921}
1922
1923static int config_set_callback(const char *key, const char *value, void *cb)
1924{
1925 struct config_set *cs = cb;
1926 configset_add_value(cs, key, value);
1927 return 0;
1928}
1929
1930int git_configset_add_file(struct config_set *cs, const char *filename)
1931{
1932 return git_config_from_file(config_set_callback, filename, cs);
1933}
1934
1935int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1936{
1937 const struct string_list *values = NULL;
1938 /*
1939 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1940 * queried key in the files of the configset, the value returned will be the last
1941 * value in the value list for that key.
1942 */
1943 values = git_configset_get_value_multi(cs, key);
1944
1945 if (!values)
1946 return 1;
1947 assert(values->nr > 0);
1948 *value = values->items[values->nr - 1].string;
1949 return 0;
1950}
1951
1952const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1953{
1954 struct config_set_element *e = configset_find_element(cs, key);
1955 return e ? &e->value_list : NULL;
1956}
1957
1958int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1959{
1960 const char *value;
1961 if (!git_configset_get_value(cs, key, &value))
1962 return git_config_string(dest, key, value);
1963 else
1964 return 1;
1965}
1966
1967int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1968{
1969 return git_configset_get_string_const(cs, key, (const char **)dest);
1970}
1971
1972int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1973{
1974 const char *value;
1975 if (!git_configset_get_value(cs, key, &value)) {
1976 *dest = git_config_int(key, value);
1977 return 0;
1978 } else
1979 return 1;
1980}
1981
1982int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1983{
1984 const char *value;
1985 if (!git_configset_get_value(cs, key, &value)) {
1986 *dest = git_config_ulong(key, value);
1987 return 0;
1988 } else
1989 return 1;
1990}
1991
1992int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1993{
1994 const char *value;
1995 if (!git_configset_get_value(cs, key, &value)) {
1996 *dest = git_config_bool(key, value);
1997 return 0;
1998 } else
1999 return 1;
2000}
2001
2002int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
2003 int *is_bool, int *dest)
2004{
2005 const char *value;
2006 if (!git_configset_get_value(cs, key, &value)) {
2007 *dest = git_config_bool_or_int(key, value, is_bool);
2008 return 0;
2009 } else
2010 return 1;
2011}
2012
2013int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
2014{
2015 const char *value;
2016 if (!git_configset_get_value(cs, key, &value)) {
89576613 2017 *dest = git_parse_maybe_bool(value);
3c8687a7
TA
2018 if (*dest == -1)
2019 return -1;
2020 return 0;
2021 } else
2022 return 1;
2023}
2024
2025int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
2026{
2027 const char *value;
2028 if (!git_configset_get_value(cs, key, &value))
2029 return git_config_pathname(dest, key, value);
2030 else
2031 return 1;
2032}
2033
3b256228
BW
2034/* Functions use to read configuration from a repository */
2035static void repo_read_config(struct repository *repo)
3c8687a7 2036{
1703751f 2037 struct config_options opts = { 0 };
3b256228
BW
2038
2039 opts.respect_includes = 1;
2040 opts.commondir = repo->commondir;
2041 opts.git_dir = repo->gitdir;
2042
2043 if (!repo->config)
2044 repo->config = xcalloc(1, sizeof(struct config_set));
2045 else
2046 git_configset_clear(repo->config);
2047
2048 git_configset_init(repo->config);
2049
2050 if (config_with_options(config_set_callback, repo->config, NULL, &opts) < 0)
2051 /*
2052 * config_with_options() normally returns only
2053 * zero, as most errors are fatal, and
2054 * non-fatal potential errors are guarded by "if"
2055 * statements that are entered only when no error is
2056 * possible.
2057 *
2058 * If we ever encounter a non-fatal error, it means
2059 * something went really wrong and we should stop
2060 * immediately.
2061 */
2062 die(_("unknown error occurred while reading the configuration files"));
2063}
2064
2065static void git_config_check_init(struct repository *repo)
2066{
2067 if (repo->config && repo->config->hash_initialized)
3c8687a7 2068 return;
3b256228 2069 repo_read_config(repo);
3c8687a7
TA
2070}
2071
3b256228 2072static void repo_config_clear(struct repository *repo)
3c8687a7 2073{
3b256228 2074 if (!repo->config || !repo->config->hash_initialized)
3c8687a7 2075 return;
3b256228 2076 git_configset_clear(repo->config);
3c8687a7
TA
2077}
2078
3b256228 2079void repo_config(struct repository *repo, config_fn_t fn, void *data)
3c8687a7 2080{
3b256228
BW
2081 git_config_check_init(repo);
2082 configset_iter(repo->config, fn, data);
3c8687a7
TA
2083}
2084
3b256228
BW
2085int repo_config_get_value(struct repository *repo,
2086 const char *key, const char **value)
3c8687a7 2087{
3b256228
BW
2088 git_config_check_init(repo);
2089 return git_configset_get_value(repo->config, key, value);
3c8687a7
TA
2090}
2091
3b256228
BW
2092const struct string_list *repo_config_get_value_multi(struct repository *repo,
2093 const char *key)
2094{
2095 git_config_check_init(repo);
2096 return git_configset_get_value_multi(repo->config, key);
2097}
2098
2099int repo_config_get_string_const(struct repository *repo,
2100 const char *key, const char **dest)
2101{
2102 int ret;
2103 git_config_check_init(repo);
2104 ret = git_configset_get_string_const(repo->config, key, dest);
2105 if (ret < 0)
2106 git_die_config(key, NULL);
2107 return ret;
2108}
2109
2110int repo_config_get_string(struct repository *repo,
2111 const char *key, char **dest)
2112{
2113 git_config_check_init(repo);
2114 return repo_config_get_string_const(repo, key, (const char **)dest);
2115}
2116
2117int repo_config_get_int(struct repository *repo,
2118 const char *key, int *dest)
2119{
2120 git_config_check_init(repo);
2121 return git_configset_get_int(repo->config, key, dest);
2122}
2123
2124int repo_config_get_ulong(struct repository *repo,
2125 const char *key, unsigned long *dest)
2126{
2127 git_config_check_init(repo);
2128 return git_configset_get_ulong(repo->config, key, dest);
2129}
2130
2131int repo_config_get_bool(struct repository *repo,
2132 const char *key, int *dest)
2133{
2134 git_config_check_init(repo);
2135 return git_configset_get_bool(repo->config, key, dest);
2136}
2137
2138int repo_config_get_bool_or_int(struct repository *repo,
2139 const char *key, int *is_bool, int *dest)
2140{
2141 git_config_check_init(repo);
2142 return git_configset_get_bool_or_int(repo->config, key, is_bool, dest);
2143}
2144
2145int repo_config_get_maybe_bool(struct repository *repo,
2146 const char *key, int *dest)
2147{
2148 git_config_check_init(repo);
2149 return git_configset_get_maybe_bool(repo->config, key, dest);
2150}
2151
2152int repo_config_get_pathname(struct repository *repo,
2153 const char *key, const char **dest)
3c8687a7 2154{
5a80e97c 2155 int ret;
3b256228
BW
2156 git_config_check_init(repo);
2157 ret = git_configset_get_pathname(repo->config, key, dest);
5a80e97c
TA
2158 if (ret < 0)
2159 git_die_config(key, NULL);
2160 return ret;
3c8687a7
TA
2161}
2162
3b256228
BW
2163/* Functions used historically to read configuration from 'the_repository' */
2164void git_config(config_fn_t fn, void *data)
2165{
2166 repo_config(the_repository, fn, data);
2167}
2168
2169void git_config_clear(void)
2170{
2171 repo_config_clear(the_repository);
2172}
2173
2174int git_config_get_value(const char *key, const char **value)
2175{
2176 return repo_config_get_value(the_repository, key, value);
2177}
2178
2179const struct string_list *git_config_get_value_multi(const char *key)
2180{
2181 return repo_config_get_value_multi(the_repository, key);
2182}
2183
2184int git_config_get_string_const(const char *key, const char **dest)
2185{
2186 return repo_config_get_string_const(the_repository, key, dest);
2187}
2188
3c8687a7
TA
2189int git_config_get_string(const char *key, char **dest)
2190{
3b256228 2191 return repo_config_get_string(the_repository, key, dest);
3c8687a7
TA
2192}
2193
2194int git_config_get_int(const char *key, int *dest)
2195{
3b256228 2196 return repo_config_get_int(the_repository, key, dest);
3c8687a7
TA
2197}
2198
2199int git_config_get_ulong(const char *key, unsigned long *dest)
2200{
3b256228 2201 return repo_config_get_ulong(the_repository, key, dest);
3c8687a7
TA
2202}
2203
2204int git_config_get_bool(const char *key, int *dest)
2205{
3b256228 2206 return repo_config_get_bool(the_repository, key, dest);
3c8687a7
TA
2207}
2208
2209int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
2210{
3b256228 2211 return repo_config_get_bool_or_int(the_repository, key, is_bool, dest);
3c8687a7
TA
2212}
2213
2214int git_config_get_maybe_bool(const char *key, int *dest)
2215{
3b256228 2216 return repo_config_get_maybe_bool(the_repository, key, dest);
3c8687a7
TA
2217}
2218
2219int git_config_get_pathname(const char *key, const char **dest)
2220{
3b256228 2221 return repo_config_get_pathname(the_repository, key, dest);
5a80e97c
TA
2222}
2223
77d67977
CC
2224int git_config_get_expiry(const char *key, const char **output)
2225{
2226 int ret = git_config_get_string_const(key, output);
2227 if (ret)
2228 return ret;
2229 if (strcmp(*output, "now")) {
dddbad72 2230 timestamp_t now = approxidate("now");
77d67977
CC
2231 if (approxidate(*output) >= now)
2232 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
2233 }
2234 return ret;
2235}
2236
6e96cb52
JH
2237int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now)
2238{
2239 char *expiry_string;
2240 intmax_t days;
2241 timestamp_t when;
2242
2243 if (git_config_get_string(key, &expiry_string))
2244 return 1; /* no such thing */
2245
2246 if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) {
2247 const int scale = 86400;
2248 *expiry = now - days * scale;
2249 return 0;
2250 }
2251
2252 if (!parse_expiry_date(expiry_string, &when)) {
2253 *expiry = when;
2254 return 0;
2255 }
2256 return -1; /* thing exists but cannot be parsed */
2257}
2258
435ec090
CC
2259int git_config_get_untracked_cache(void)
2260{
2261 int val = -1;
2262 const char *v;
2263
dae6c322
CC
2264 /* Hack for test programs like test-dump-untracked-cache */
2265 if (ignore_untracked_cache_config)
2266 return -1;
2267
435ec090
CC
2268 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
2269 return val;
2270
2271 if (!git_config_get_value("core.untrackedcache", &v)) {
2272 if (!strcasecmp(v, "keep"))
2273 return -1;
2274
f60ef2d6
CC
2275 error(_("unknown core.untrackedCache value '%s'; "
2276 "using 'keep' default value"), v);
435ec090
CC
2277 return -1;
2278 }
2279
2280 return -1; /* default value */
2281}
2282
1f44b09b
CC
2283int git_config_get_split_index(void)
2284{
2285 int val;
2286
2287 if (!git_config_get_maybe_bool("core.splitindex", &val))
2288 return val;
2289
2290 return -1; /* default value */
2291}
2292
72dcb7b3
CC
2293int git_config_get_max_percent_split_change(void)
2294{
2295 int val = -1;
2296
2297 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2298 if (0 <= val && val <= 100)
2299 return val;
2300
2301 return error(_("splitIndex.maxPercentChange value '%d' "
2302 "should be between 0 and 100"), val);
2303 }
2304
2305 return -1; /* default value */
2306}
2307
883e248b
BP
2308int git_config_get_fsmonitor(void)
2309{
2310 if (git_config_get_pathname("core.fsmonitor", &core_fsmonitor))
4cb54d0a 2311 core_fsmonitor = getenv("GIT_TEST_FSMONITOR");
883e248b
BP
2312
2313 if (core_fsmonitor && !*core_fsmonitor)
2314 core_fsmonitor = NULL;
2315
2316 if (core_fsmonitor)
2317 return 1;
2318
2319 return 0;
2320}
2321
2a9dedef 2322int git_config_get_index_threads(int *dest)
c780b9cf 2323{
2a9dedef 2324 int is_bool, val;
c780b9cf
BP
2325
2326 val = git_env_ulong("GIT_TEST_INDEX_THREADS", 0);
2a9dedef
JN
2327 if (val) {
2328 *dest = val;
2329 return 0;
2330 }
c780b9cf
BP
2331
2332 if (!git_config_get_bool_or_int("index.threads", &is_bool, &val)) {
2333 if (is_bool)
2a9dedef 2334 *dest = val ? 0 : 1;
c780b9cf 2335 else
2a9dedef
JN
2336 *dest = val;
2337 return 0;
c780b9cf
BP
2338 }
2339
2a9dedef 2340 return 1;
c780b9cf
BP
2341}
2342
5a80e97c
TA
2343NORETURN
2344void git_die_config_linenr(const char *key, const char *filename, int linenr)
2345{
2346 if (!filename)
2347 die(_("unable to parse '%s' from command-line config"), key);
2348 else
2349 die(_("bad config variable '%s' in file '%s' at line %d"),
2350 key, filename, linenr);
2351}
2352
2353NORETURN __attribute__((format(printf, 2, 3)))
2354void git_die_config(const char *key, const char *err, ...)
2355{
2356 const struct string_list *values;
2357 struct key_value_info *kv_info;
2358
2359 if (err) {
2360 va_list params;
2361 va_start(params, err);
2362 vreportf("error: ", err, params);
2363 va_end(params);
2364 }
2365 values = git_config_get_value_multi(key);
2366 kv_info = values->items[values->nr - 1].util;
2367 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2368}
2369
10bea152
JS
2370/*
2371 * Find all the stuff for git_config_set() below.
2372 */
4ddba79d 2373
fee8572c 2374struct config_store_data {
10bea152 2375 int baselen;
4b25d091 2376 char *key;
f98d863d 2377 int do_not_match;
4b25d091 2378 regex_t *value_regex;
4ddba79d 2379 int multi_replace;
6ae996f2
JS
2380 struct {
2381 size_t begin, end;
2382 enum config_event_t type;
22aedfcc 2383 int is_keys_section;
6ae996f2
JS
2384 } *parsed;
2385 unsigned int parsed_nr, parsed_alloc, *seen, seen_nr, seen_alloc;
5221c315 2386 unsigned int key_seen:1, section_seen:1, is_keys_section:1;
fee8572c 2387};
10bea152 2388
2a00e594
2389static void config_store_data_clear(struct config_store_data *store)
2390{
e7347cb9 2391 free(store->key);
3b82542d
2392 if (store->value_regex != NULL &&
2393 store->value_regex != CONFIG_REGEX_NONE) {
2394 regfree(store->value_regex);
2395 free(store->value_regex);
2396 }
2a00e594
2397 free(store->parsed);
2398 free(store->seen);
2399 memset(store, 0, sizeof(*store));
2400}
2401
fee8572c
JS
2402static int matches(const char *key, const char *value,
2403 const struct config_store_data *store)
f98d863d 2404{
fee8572c 2405 if (strcmp(key, store->key))
c1063be2 2406 return 0; /* not ours */
fee8572c 2407 if (!store->value_regex)
c1063be2 2408 return 1; /* always matches */
fee8572c 2409 if (store->value_regex == CONFIG_REGEX_NONE)
c1063be2
JK
2410 return 0; /* never matches */
2411
fee8572c
JS
2412 return store->do_not_match ^
2413 (value && !regexec(store->value_regex, value, 0, NULL, 0));
f98d863d
JS
2414}
2415
6ae996f2
JS
2416static int store_aux_event(enum config_event_t type,
2417 size_t begin, size_t end, void *data)
2418{
2419 struct config_store_data *store = data;
2420
2421 ALLOC_GROW(store->parsed, store->parsed_nr + 1, store->parsed_alloc);
2422 store->parsed[store->parsed_nr].begin = begin;
2423 store->parsed[store->parsed_nr].end = end;
2424 store->parsed[store->parsed_nr].type = type;
6ae996f2
JS
2425
2426 if (type == CONFIG_EVENT_SECTION) {
2d84f13d
SB
2427 int (*cmpfn)(const char *, const char *, size_t);
2428
6ae996f2 2429 if (cf->var.len < 2 || cf->var.buf[cf->var.len - 1] != '.')
a769bfc7 2430 return error(_("invalid section name '%s'"), cf->var.buf);
6ae996f2 2431
2d84f13d
SB
2432 if (cf->subsection_case_sensitive)
2433 cmpfn = strncasecmp;
2434 else
2435 cmpfn = strncmp;
2436
6ae996f2 2437 /* Is this the section we were looking for? */
22aedfcc
JS
2438 store->is_keys_section =
2439 store->parsed[store->parsed_nr].is_keys_section =
2440 cf->var.len - 1 == store->baselen &&
2d84f13d 2441 !cmpfn(cf->var.buf, store->key, store->baselen);
c71d8bb3
JS
2442 if (store->is_keys_section) {
2443 store->section_seen = 1;
2444 ALLOC_GROW(store->seen, store->seen_nr + 1,
2445 store->seen_alloc);
2446 store->seen[store->seen_nr] = store->parsed_nr;
2447 }
6ae996f2
JS
2448 }
2449
22aedfcc
JS
2450 store->parsed_nr++;
2451
6ae996f2 2452 return 0;
f98d863d
JS
2453}
2454
4b25d091 2455static int store_aux(const char *key, const char *value, void *cb)
10bea152 2456{
fee8572c 2457 struct config_store_data *store = cb;
ae9ee41d 2458
5221c315 2459 if (store->key_seen) {
fee8572c 2460 if (matches(key, value, store)) {
668b9ade 2461 if (store->seen_nr == 1 && store->multi_replace == 0) {
8262aaa2 2462 warning(_("%s has multiple values"), key);
10bea152 2463 }
4ddba79d 2464
668b9ade
JS
2465 ALLOC_GROW(store->seen, store->seen_nr + 1,
2466 store->seen_alloc);
83786fa4 2467
6ae996f2 2468 store->seen[store->seen_nr] = store->parsed_nr;
668b9ade 2469 store->seen_nr++;
10bea152 2470 }
5221c315 2471 } else if (store->is_keys_section) {
ae9ee41d 2472 /*
6ae996f2
JS
2473 * Do not increment matches yet: this may not be a match, but we
2474 * are in the desired section.
ae9ee41d 2475 */
6ae996f2
JS
2476 ALLOC_GROW(store->seen, store->seen_nr + 1, store->seen_alloc);
2477 store->seen[store->seen_nr] = store->parsed_nr;
5221c315 2478 store->section_seen = 1;
ae9ee41d 2479
6ae996f2
JS
2480 if (matches(key, value, store)) {
2481 store->seen_nr++;
2482 store->key_seen = 1;
bdf0ef08 2483 }
10bea152 2484 }
5221c315 2485
10bea152
JS
2486 return 0;
2487}
2488
64c0d71c 2489static int write_error(const char *filename)
480c9e52 2490{
a769bfc7 2491 error(_("failed to write new configuration file %s"), filename);
480c9e52
AW
2492
2493 /* Same error code as "failed to rename". */
2494 return 4;
2495}
2496
fee8572c
JS
2497static struct strbuf store_create_section(const char *key,
2498 const struct config_store_data *store)
10bea152 2499{
cb891a59 2500 const char *dot;
d9bd4cbb 2501 int i;
f285a2d7 2502 struct strbuf sb = STRBUF_INIT;
d14f7764 2503
fee8572c 2504 dot = memchr(key, '.', store->baselen);
d14f7764 2505 if (dot) {
cb891a59 2506 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
fee8572c 2507 for (i = dot - key + 1; i < store->baselen; i++) {
e5c349ba 2508 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2509 strbuf_addch(&sb, '\\');
2510 strbuf_addch(&sb, key[i]);
d14f7764 2511 }
cb891a59
KH
2512 strbuf_addstr(&sb, "\"]\n");
2513 } else {
fee8572c 2514 strbuf_addf(&sb, "[%.*s]\n", store->baselen, key);
d14f7764
LT
2515 }
2516
5463caab
SD
2517 return sb;
2518}
2519
fee8572c
JS
2520static ssize_t write_section(int fd, const char *key,
2521 const struct config_store_data *store)
5463caab 2522{
fee8572c 2523 struct strbuf sb = store_create_section(key, store);
3b48045c 2524 ssize_t ret;
5463caab 2525
782c030e 2526 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59 2527 strbuf_release(&sb);
480c9e52 2528
d9bd4cbb 2529 return ret;
10bea152
JS
2530}
2531
fee8572c
JS
2532static ssize_t write_pair(int fd, const char *key, const char *value,
2533 const struct config_store_data *store)
10bea152 2534{
d9bd4cbb
JK
2535 int i;
2536 ssize_t ret;
fee8572c 2537 int length = strlen(key + store->baselen + 1);
cb891a59 2538 const char *quote = "";
f285a2d7 2539 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2540
6281f394
JM
2541 /*
2542 * Check to see if the value needs to be surrounded with a dq pair.
2543 * Note that problematic characters are always backslash-quoted; this
2544 * check is about not losing leading or trailing SP and strings that
2545 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2546 * configuration parser.
2547 */
cdd4fb15 2548 if (value[0] == ' ')
cb891a59 2549 quote = "\"";
cdd4fb15
BG
2550 for (i = 0; value[i]; i++)
2551 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2552 quote = "\"";
2553 if (i && value[i - 1] == ' ')
2554 quote = "\"";
2555
cb891a59 2556 strbuf_addf(&sb, "\t%.*s = %s",
fee8572c 2557 length, key + store->baselen + 1, quote);
10bea152 2558
10bea152
JS
2559 for (i = 0; value[i]; i++)
2560 switch (value[i]) {
480c9e52 2561 case '\n':
cb891a59 2562 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2563 break;
2564 case '\t':
cb891a59 2565 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2566 break;
2567 case '"':
2568 case '\\':
cb891a59 2569 strbuf_addch(&sb, '\\');
1cf01a34 2570 /* fallthrough */
480c9e52 2571 default:
cb891a59 2572 strbuf_addch(&sb, value[i]);
480c9e52
AW
2573 break;
2574 }
cb891a59
KH
2575 strbuf_addf(&sb, "%s\n", quote);
2576
d9bd4cbb 2577 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59
KH
2578 strbuf_release(&sb);
2579
d9bd4cbb 2580 return ret;
10bea152
JS
2581}
2582
22aedfcc
JS
2583/*
2584 * If we are about to unset the last key(s) in a section, and if there are
2585 * no comments surrounding (or included in) the section, we will want to
2586 * extend begin/end to remove the entire section.
2587 *
2588 * Note: the parameter `seen_ptr` points to the index into the store.seen
2589 * array. * This index may be incremented if a section has more than one
2590 * entry (which all are to be removed).
2591 */
2592static void maybe_remove_section(struct config_store_data *store,
22aedfcc
JS
2593 size_t *begin_offset, size_t *end_offset,
2594 int *seen_ptr)
4ddba79d 2595{
22aedfcc
JS
2596 size_t begin;
2597 int i, seen, section_seen = 0;
4ddba79d 2598
22aedfcc
JS
2599 /*
2600 * First, ensure that this is the first key, and that there are no
2601 * comments before the entry nor before the section header.
2602 */
2603 seen = *seen_ptr;
2604 for (i = store->seen[seen]; i > 0; i--) {
2605 enum config_event_t type = store->parsed[i - 1].type;
2606
2607 if (type == CONFIG_EVENT_COMMENT)
2608 /* There is a comment before this entry or section */
2609 return;
2610 if (type == CONFIG_EVENT_ENTRY) {
2611 if (!section_seen)
2612 /* This is not the section's first entry. */
2613 return;
2614 /* We encountered no comment before the section. */
2615 break;
2616 }
2617 if (type == CONFIG_EVENT_SECTION) {
2618 if (!store->parsed[i - 1].is_keys_section)
2619 break;
2620 section_seen = 1;
4ddba79d 2621 }
7a31cc0f 2622 }
22aedfcc
JS
2623 begin = store->parsed[i].begin;
2624
2625 /*
2626 * Next, make sure that we are removing he last key(s) in the section,
2627 * and that there are no comments that are possibly about the current
2628 * section.
2629 */
2630 for (i = store->seen[seen] + 1; i < store->parsed_nr; i++) {
2631 enum config_event_t type = store->parsed[i].type;
4ddba79d 2632
22aedfcc
JS
2633 if (type == CONFIG_EVENT_COMMENT)
2634 return;
2635 if (type == CONFIG_EVENT_SECTION) {
2636 if (store->parsed[i].is_keys_section)
2637 continue;
2638 break;
2639 }
2640 if (type == CONFIG_EVENT_ENTRY) {
2641 if (++seen < store->seen_nr &&
2642 i == store->seen[seen])
2643 /* We want to remove this entry, too */
2644 continue;
2645 /* There is another entry in this section. */
2646 return;
2647 }
2648 }
2649
2650 /*
2651 * We are really removing the last entry/entries from this section, and
2652 * there are no enclosed or surrounding comments. Remove the entire,
2653 * now-empty section.
2654 */
2655 *seen_ptr = seen;
2656 *begin_offset = begin;
2657 if (i < store->parsed_nr)
2658 *end_offset = store->parsed[i].begin;
2659 else
2660 *end_offset = store->parsed[store->parsed_nr - 1].end;
4ddba79d
JS
2661}
2662
30598ad0
PS
2663int git_config_set_in_file_gently(const char *config_filename,
2664 const char *key, const char *value)
5ec31182 2665{
30598ad0 2666 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2667}
2668
3d180648
PS
2669void git_config_set_in_file(const char *config_filename,
2670 const char *key, const char *value)
10bea152 2671{
3d180648 2672 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2673}
2674
30598ad0 2675int git_config_set_gently(const char *key, const char *value)
10bea152 2676{
30598ad0 2677 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2678}
2679
3d180648 2680void git_config_set(const char *key, const char *value)
b4c8aba6 2681{
3d180648 2682 git_config_set_multivar(key, value, NULL, 0);
ee4512ed
JH
2683
2684 trace2_cmd_set_config(key, value);
10bea152
JS
2685}
2686
2687/*
2688 * If value==NULL, unset in (remove from) config,
2689 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2690 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2691 * (only add a new one)
4ddba79d
JS
2692 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2693 * else all matching key/values (regardless how many) are removed,
2694 * before the new pair is written.
10bea152
JS
2695 *
2696 * Returns 0 on success.
2697 *
2698 * This function does this:
2699 *
2700 * - it locks the config file by creating ".git/config.lock"
2701 *
2702 * - it then parses the config using store_aux() as validator to find
2703 * the position on the key/value pair to replace. If it is to be unset,
2704 * it must be found exactly once.
2705 *
2706 * - the config file is mmap()ed and the part before the match (if any) is
2707 * written to the lock file, then the changed part and the rest.
2708 *
2709 * - the config file is removed and the lock file rename()d to it.
2710 *
2711 */
30598ad0
PS
2712int git_config_set_multivar_in_file_gently(const char *config_filename,
2713 const char *key, const char *value,
2714 const char *value_regex,
2715 int multi_replace)
10bea152 2716{
54d160ec 2717 int fd = -1, in_fd = -1;
dafc88b1 2718 int ret;
bfffb48c 2719 struct lock_file lock = LOCK_INIT;
0a5f5759 2720 char *filename_buf = NULL;
3a1b3126
JK
2721 char *contents = NULL;
2722 size_t contents_sz;
fee8572c
JS
2723 struct config_store_data store;
2724
2725 memset(&store, 0, sizeof(store));
4ddba79d 2726
b09c53a3
LP
2727 /* parse-key returns negative; flip the sign to feed exit(3) */
2728 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2729 if (ret)
dafc88b1 2730 goto out_free;
b17e659d
JS
2731
2732 store.multi_replace = multi_replace;
10bea152 2733
0a5f5759
JK
2734 if (!config_filename)
2735 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2736
2737 /*
6cbf973c 2738 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2739 * contents of .git/config will be written into it.
2740 */
bfffb48c 2741 fd = hold_lock_file_for_update(&lock, config_filename, 0);
6cbf973c 2742 if (fd < 0) {
a769bfc7 2743 error_errno(_("could not lock config file %s"), config_filename);
7a397419 2744 ret = CONFIG_NO_LOCK;
dafc88b1 2745 goto out_free;
10bea152
JS
2746 }
2747
2748 /*
2749 * If .git/config does not exist yet, write a minimal version.
2750 */
88fb958b
AR
2751 in_fd = open(config_filename, O_RDONLY);
2752 if ( in_fd < 0 ) {
88fb958b 2753 if ( ENOENT != errno ) {
a769bfc7 2754 error_errno(_("opening %s"), config_filename);
7a397419 2755 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2756 goto out_free;
88fb958b 2757 }
10bea152
JS
2758 /* if nothing to unset, error out */
2759 if (value == NULL) {
7a397419 2760 ret = CONFIG_NOTHING_SET;
dafc88b1 2761 goto out_free;
10bea152
JS
2762 }
2763
e7347cb9
2764 free(store.key);
2765 store.key = xstrdup(key);
fee8572c
JS
2766 if (write_section(fd, key, &store) < 0 ||
2767 write_pair(fd, key, value, &store) < 0)
93c1e079
JH
2768 goto write_err_out;
2769 } else {
88fb958b 2770 struct stat st;
3a1b3126 2771 size_t copy_begin, copy_end;
dc49cd76 2772 int i, new_line = 0;
6ae996f2 2773 struct config_options opts;
10bea152
JS
2774
2775 if (value_regex == NULL)
2776 store.value_regex = NULL;
c1063be2
JK
2777 else if (value_regex == CONFIG_REGEX_NONE)
2778 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2779 else {
f98d863d
JS
2780 if (value_regex[0] == '!') {
2781 store.do_not_match = 1;
2782 value_regex++;
2783 } else
2784 store.do_not_match = 0;
2785
2d7320d0 2786 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2787 if (regcomp(store.value_regex, value_regex,
2788 REG_EXTENDED)) {
a769bfc7 2789 error(_("invalid pattern: %s"), value_regex);
3b82542d 2790 FREE_AND_NULL(store.value_regex);
7a397419 2791 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2792 goto out_free;
10bea152
JS
2793 }
2794 }
2795
6ae996f2
JS
2796 ALLOC_GROW(store.parsed, 1, store.parsed_alloc);
2797 store.parsed[0].end = 0;
2798
2799 memset(&opts, 0, sizeof(opts));
2800 opts.event_fn = store_aux_event;
2801 opts.event_fn_data = &store;
10bea152
JS
2802
2803 /*
6ae996f2
JS
2804 * After this, store.parsed will contain offsets of all the
2805 * parsed elements, and store.seen will contain a list of
2806 * matches, as indices into store.parsed.
2807 *
10bea152
JS
2808 * As a side effect, we make sure to transform only a valid
2809 * existing config file.
2810 */
6ae996f2
JS
2811 if (git_config_from_file_with_options(store_aux,
2812 config_filename,
2813 &store, &opts)) {
a769bfc7 2814 error(_("invalid config file %s"), config_filename);
7a397419 2815 ret = CONFIG_INVALID_FILE;
dafc88b1 2816 goto out_free;
10bea152
JS
2817 }
2818
4ddba79d 2819 /* if nothing to unset, or too many matches, error out */
668b9ade
JS
2820 if ((store.seen_nr == 0 && value == NULL) ||
2821 (store.seen_nr > 1 && multi_replace == 0)) {
7a397419 2822 ret = CONFIG_NOTHING_SET;
dafc88b1 2823 goto out_free;
10bea152
JS
2824 }
2825
29647d79
NTND
2826 if (fstat(in_fd, &st) == -1) {
2827 error_errno(_("fstat on %s failed"), config_filename);
2828 ret = CONFIG_INVALID_FILE;
2829 goto out_free;
2830 }
2831
dc49cd76 2832 contents_sz = xsize_t(st.st_size);
1570856b
JK
2833 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2834 MAP_PRIVATE, in_fd, 0);
2835 if (contents == MAP_FAILED) {
0e8771f1
JK
2836 if (errno == ENODEV && S_ISDIR(st.st_mode))
2837 errno = EISDIR;
a769bfc7 2838 error_errno(_("unable to mmap '%s'"), config_filename);
1570856b
JK
2839 ret = CONFIG_INVALID_FILE;
2840 contents = NULL;
2841 goto out_free;
2842 }
10bea152 2843 close(in_fd);
54d160ec 2844 in_fd = -1;
10bea152 2845
bfffb48c 2846 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
a769bfc7 2847 error_errno(_("chmod on %s failed"), get_lock_file_path(&lock));
daa22c6f
EW
2848 ret = CONFIG_NO_WRITE;
2849 goto out_free;
2850 }
2851
6ae996f2
JS
2852 if (store.seen_nr == 0) {
2853 if (!store.seen_alloc) {
2854 /* Did not see key nor section */
2855 ALLOC_GROW(store.seen, 1, store.seen_alloc);
2856 store.seen[0] = store.parsed_nr
2857 - !!store.parsed_nr;
2858 }
668b9ade 2859 store.seen_nr = 1;
6ae996f2 2860 }
4ddba79d 2861
668b9ade 2862 for (i = 0, copy_begin = 0; i < store.seen_nr; i++) {
6ae996f2
JS
2863 size_t replace_end;
2864 int j = store.seen[i];
2865
46fc89ce 2866 new_line = 0;
6ae996f2 2867 if (!store.key_seen) {
c71d8bb3
JS
2868 copy_end = store.parsed[j].end;
2869 /* include '\n' when copying section header */
2870 if (copy_end > 0 && copy_end < contents_sz &&
2871 contents[copy_end - 1] != '\n' &&
2872 contents[copy_end] == '\n')
2873 copy_end++;
2874 replace_end = copy_end;
6ae996f2
JS
2875 } else {
2876 replace_end = store.parsed[j].end;
2877 copy_end = store.parsed[j].begin;
22aedfcc 2878 if (!value)
a263ea84 2879 maybe_remove_section(&store,
22aedfcc
JS
2880 &copy_end,
2881 &replace_end, &i);
6ae996f2
JS
2882 /*
2883 * Swallow preceding white-space on the same
2884 * line.
2885 */
2886 while (copy_end > 0 ) {
2887 char c = contents[copy_end - 1];
2888
2889 if (isspace(c) && c != '\n')
2890 copy_end--;
2891 else
2892 break;
2893 }
2894 }
4ddba79d 2895
02e5ba4a
JK
2896 if (copy_end > 0 && contents[copy_end-1] != '\n')
2897 new_line = 1;
2898
4ddba79d
JS
2899 /* write the first part of the config */
2900 if (copy_end > copy_begin) {
93c1e079 2901 if (write_in_full(fd, contents + copy_begin,
efacf609 2902 copy_end - copy_begin) < 0)
93c1e079
JH
2903 goto write_err_out;
2904 if (new_line &&
06f46f23 2905 write_str_in_full(fd, "\n") < 0)
93c1e079 2906 goto write_err_out;
4ddba79d 2907 }
6ae996f2 2908 copy_begin = replace_end;
10bea152
JS
2909 }
2910
10bea152
JS
2911 /* write the pair (value == NULL means unset) */
2912 if (value != NULL) {
5221c315 2913 if (!store.section_seen) {
fee8572c 2914 if (write_section(fd, key, &store) < 0)
93c1e079 2915 goto write_err_out;
480c9e52 2916 }
fee8572c 2917 if (write_pair(fd, key, value, &store) < 0)
93c1e079 2918 goto write_err_out;
10bea152
JS
2919 }
2920
2921 /* write the rest of the config */
dc49cd76 2922 if (copy_begin < contents_sz)
93c1e079 2923 if (write_in_full(fd, contents + copy_begin,
efacf609 2924 contents_sz - copy_begin) < 0)
93c1e079 2925 goto write_err_out;
7a64592c
KB
2926
2927 munmap(contents, contents_sz);
2928 contents = NULL;
10bea152
JS
2929 }
2930
bfffb48c 2931 if (commit_lock_file(&lock) < 0) {
a769bfc7 2932 error_errno(_("could not write config file %s"), config_filename);
7a397419 2933 ret = CONFIG_NO_WRITE;
dafc88b1 2934 goto out_free;
10bea152
JS
2935 }
2936
dafc88b1
SH
2937 ret = 0;
2938
3c8687a7
TA
2939 /* Invalidate the config cache */
2940 git_config_clear();
2941
dafc88b1 2942out_free:
bfffb48c 2943 rollback_lock_file(&lock);
0a5f5759 2944 free(filename_buf);
3a1b3126
JK
2945 if (contents)
2946 munmap(contents, contents_sz);
54d160ec
SS
2947 if (in_fd >= 0)
2948 close(in_fd);
2a00e594 2949 config_store_data_clear(&store);
dafc88b1 2950 return ret;
93c1e079
JH
2951
2952write_err_out:
bfffb48c 2953 ret = write_error(get_lock_file_path(&lock));
93c1e079
JH
2954 goto out_free;
2955
10bea152
JS
2956}
2957
3d180648
PS
2958void git_config_set_multivar_in_file(const char *config_filename,
2959 const char *key, const char *value,
2960 const char *value_regex, int multi_replace)
b4c8aba6 2961{
1cae428e
JK
2962 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2963 value_regex, multi_replace))
2964 return;
2965 if (value)
8c3ca351 2966 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2967 else
2968 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2969}
2970
30598ad0
PS
2971int git_config_set_multivar_gently(const char *key, const char *value,
2972 const char *value_regex, int multi_replace)
5ec31182 2973{
30598ad0
PS
2974 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2975 multi_replace);
5ec31182
RR
2976}
2977
3d180648
PS
2978void git_config_set_multivar(const char *key, const char *value,
2979 const char *value_regex, int multi_replace)
5ec31182 2980{
3d180648
PS
2981 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2982 multi_replace);
5ec31182
RR
2983}
2984
118f8b24
PB
2985static int section_name_match (const char *buf, const char *name)
2986{
2987 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2988 if (buf[i] != '[')
2989 return 0;
2990 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2991 if (!dot && isspace(buf[i])) {
2992 dot = 1;
2993 if (name[j++] != '.')
2994 break;
2995 for (i++; isspace(buf[i]); i++)
2996 ; /* do nothing */
2997 if (buf[i] != '"')
2998 break;
2999 continue;
3000 }
3001 if (buf[i] == '\\' && dot)
3002 i++;
3003 else if (buf[i] == '"' && dot) {
3004 for (i++; isspace(buf[i]); i++)
3005 ; /* do_nothing */
3006 break;
3007 }
3008 if (buf[i] != name[j++])
3009 break;
3010 }
a4c0d463
AV
3011 if (buf[i] == ']' && name[j] == 0) {
3012 /*
3013 * We match, now just find the right length offset by
3014 * gobbling up any whitespace after it, as well
3015 */
3016 i++;
3017 for (; buf[i] && isspace(buf[i]); i++)
3018 ; /* do nothing */
3019 return i;
3020 }
3021 return 0;
118f8b24
PB
3022}
3023
94a35b1a
JK
3024static int section_name_is_ok(const char *name)
3025{
3026 /* Empty section names are bogus. */
3027 if (!*name)
3028 return 0;
3029
3030 /*
3031 * Before a dot, we must be alphanumeric or dash. After the first dot,
3032 * anything goes, so we can stop checking.
3033 */
3034 for (; *name && *name != '.'; name++)
3035 if (*name != '-' && !isalnum(*name))
3036 return 0;
3037 return 1;
3038}
3039
118f8b24 3040/* if new_name == NULL, the section is removed instead */
52d59cc6 3041static int git_config_copy_or_rename_section_in_file(const char *config_filename,
fee8572c
JS
3042 const char *old_name,
3043 const char *new_name, int copy)
0667fcfb 3044{
118f8b24 3045 int ret = 0, remove = 0;
42bd39b5 3046 char *filename_buf = NULL;
837e34eb 3047 struct lock_file lock = LOCK_INIT;
0667fcfb
JS
3048 int out_fd;
3049 char buf[1024];
4db7dbdb 3050 FILE *config_file = NULL;
daa22c6f 3051 struct stat st;
52d59cc6 3052 struct strbuf copystr = STRBUF_INIT;
fee8572c
JS
3053 struct config_store_data store;
3054
3055 memset(&store, 0, sizeof(store));
0667fcfb 3056
94a35b1a 3057 if (new_name && !section_name_is_ok(new_name)) {
a769bfc7 3058 ret = error(_("invalid section name: %s"), new_name);
c06fa62d 3059 goto out_no_rollback;
94a35b1a
JK
3060 }
3061
42bd39b5
JK
3062 if (!config_filename)
3063 config_filename = filename_buf = git_pathdup("config");
3064
837e34eb 3065 out_fd = hold_lock_file_for_update(&lock, config_filename, 0);
fc1905bb 3066 if (out_fd < 0) {
a769bfc7 3067 ret = error(_("could not lock config file %s"), config_filename);
fc1905bb
JH
3068 goto out;
3069 }
0667fcfb 3070
fc1905bb 3071 if (!(config_file = fopen(config_filename, "rb"))) {
11dc1fcb
NTND
3072 ret = warn_on_fopen_errors(config_filename);
3073 if (ret)
3074 goto out;
01ebb9dc 3075 /* no config file means nothing to rename, no error */
6e45b43f 3076 goto commit_and_out;
fc1905bb 3077 }
0667fcfb 3078
29647d79
NTND
3079 if (fstat(fileno(config_file), &st) == -1) {
3080 ret = error_errno(_("fstat on %s failed"), config_filename);
3081 goto out;
3082 }
daa22c6f 3083
837e34eb 3084 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
a769bfc7 3085 ret = error_errno(_("chmod on %s failed"),
837e34eb 3086 get_lock_file_path(&lock));
daa22c6f
EW
3087 goto out;
3088 }
3089
0667fcfb
JS
3090 while (fgets(buf, sizeof(buf), config_file)) {
3091 int i;
480c9e52 3092 int length;
52d59cc6 3093 int is_section = 0;
9a5abfc7 3094 char *output = buf;
0667fcfb
JS
3095 for (i = 0; buf[i] && isspace(buf[i]); i++)
3096 ; /* do nothing */
3097 if (buf[i] == '[') {
3098 /* it's a section */
52d59cc6
SD
3099 int offset;
3100 is_section = 1;
3101
3102 /*
3103 * When encountering a new section under -c we
3104 * need to flush out any section we're already
3105 * coping and begin anew. There might be
3106 * multiple [branch "$name"] sections.
3107 */
3108 if (copystr.len > 0) {
c5e3bc6e 3109 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
0b646bca 3110 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3111 goto out;
3112 }
3113 strbuf_reset(&copystr);
3114 }
3115
3116 offset = section_name_match(&buf[i], old_name);
a4c0d463 3117 if (offset > 0) {
118f8b24
PB
3118 ret++;
3119 if (new_name == NULL) {
3120 remove = 1;
0667fcfb
JS
3121 continue;
3122 }
0667fcfb 3123 store.baselen = strlen(new_name);
52d59cc6 3124 if (!copy) {
fee8572c 3125 if (write_section(out_fd, new_name, &store) < 0) {
0b646bca 3126 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3127 goto out;
3128 }
9a5abfc7 3129 /*
52d59cc6
SD
3130 * We wrote out the new section, with
3131 * a newline, now skip the old
3132 * section's length
9a5abfc7 3133 */
52d59cc6
SD
3134 output += offset + i;
3135 if (strlen(output) > 0) {
3136 /*
3137 * More content means there's
3138 * a declaration to put on the
3139 * next line; indent with a
3140 * tab
3141 */
3142 output -= 1;
3143 output[0] = '\t';
3144 }
3145 } else {
fee8572c 3146 copystr = store_create_section(new_name, &store);
9a5abfc7 3147 }
0667fcfb 3148 }
118f8b24 3149 remove = 0;
0667fcfb 3150 }
118f8b24
PB
3151 if (remove)
3152 continue;
9a5abfc7 3153 length = strlen(output);
52d59cc6
SD
3154
3155 if (!is_section && copystr.len > 0) {
3156 strbuf_add(&copystr, output, length);
3157 }
3158
06f46f23 3159 if (write_in_full(out_fd, output, length) < 0) {
837e34eb 3160 ret = write_error(get_lock_file_path(&lock));
480c9e52
AW
3161 goto out;
3162 }
0667fcfb 3163 }
52d59cc6
SD
3164
3165 /*
3166 * Copy a trailing section at the end of the config, won't be
3167 * flushed by the usual "flush because we have a new section
3168 * logic in the loop above.
3169 */
3170 if (copystr.len > 0) {
c5e3bc6e 3171 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
0b646bca 3172 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3173 goto out;
3174 }
3175 strbuf_reset(&copystr);
3176 }
3177
fc1905bb 3178 fclose(config_file);
4db7dbdb 3179 config_file = NULL;
6e45b43f 3180commit_and_out:
837e34eb 3181 if (commit_lock_file(&lock) < 0)
a769bfc7 3182 ret = error_errno(_("could not write config file %s"),
f0658ec9 3183 config_filename);
8b590075 3184out:
4db7dbdb
JS
3185 if (config_file)
3186 fclose(config_file);
837e34eb 3187 rollback_lock_file(&lock);
c06fa62d 3188out_no_rollback:
42bd39b5 3189 free(filename_buf);
2a00e594 3190 config_store_data_clear(&store);
0667fcfb
JS
3191 return ret;
3192}
40ea4ed9 3193
52d59cc6
SD
3194int git_config_rename_section_in_file(const char *config_filename,
3195 const char *old_name, const char *new_name)
3196{
3197 return git_config_copy_or_rename_section_in_file(config_filename,
3198 old_name, new_name, 0);
3199}
3200
42bd39b5
JK
3201int git_config_rename_section(const char *old_name, const char *new_name)
3202{
4a7bb5ba 3203 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
3204}
3205
52d59cc6
SD
3206int git_config_copy_section_in_file(const char *config_filename,
3207 const char *old_name, const char *new_name)
3208{
3209 return git_config_copy_or_rename_section_in_file(config_filename,
3210 old_name, new_name, 1);
3211}
3212
3213int git_config_copy_section(const char *old_name, const char *new_name)
3214{
3215 return git_config_copy_section_in_file(NULL, old_name, new_name);
3216}
3217
40ea4ed9
JH
3218/*
3219 * Call this to report error for your variable that should not
3220 * get a boolean value (i.e. "[my] var" means "true").
3221 */
a469a101 3222#undef config_error_nonbool
40ea4ed9
JH
3223int config_error_nonbool(const char *var)
3224{
a769bfc7 3225 return error(_("missing value for '%s'"), var);
40ea4ed9 3226}
1b86bbb0
JK
3227
3228int parse_config_key(const char *var,
3229 const char *section,
3230 const char **subsection, int *subsection_len,
3231 const char **key)
3232{
1b86bbb0
JK
3233 const char *dot;
3234
3235 /* Does it start with "section." ? */
e3394fdc 3236 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
3237 return -1;
3238
3239 /*
3240 * Find the key; we don't know yet if we have a subsection, but we must
3241 * parse backwards from the end, since the subsection may have dots in
3242 * it, too.
3243 */
3244 dot = strrchr(var, '.');
3245 *key = dot + 1;
3246
3247 /* Did we have a subsection at all? */
e3394fdc 3248 if (dot == var) {
48f8d9f7
JK
3249 if (subsection) {
3250 *subsection = NULL;
3251 *subsection_len = 0;
3252 }
1b86bbb0
JK
3253 }
3254 else {
48f8d9f7
JK
3255 if (!subsection)
3256 return -1;
e3394fdc 3257 *subsection = var + 1;
1b86bbb0
JK
3258 *subsection_len = dot - *subsection;
3259 }
3260
3261 return 0;
3262}
473166b9
LS
3263
3264const char *current_config_origin_type(void)
3265{
1b8132d9 3266 int type;
0d44a2da
JK
3267 if (current_config_kvi)
3268 type = current_config_kvi->origin_type;
3269 else if(cf)
3270 type = cf->origin_type;
3271 else
033abf97 3272 BUG("current_config_origin_type called outside config callback");
1b8132d9
VA
3273
3274 switch (type) {
3275 case CONFIG_ORIGIN_BLOB:
3276 return "blob";
3277 case CONFIG_ORIGIN_FILE:
3278 return "file";
3279 case CONFIG_ORIGIN_STDIN:
3280 return "standard input";
3281 case CONFIG_ORIGIN_SUBMODULE_BLOB:
3282 return "submodule-blob";
3283 case CONFIG_ORIGIN_CMDLINE:
3284 return "command line";
3285 default:
033abf97 3286 BUG("unknown config origin type");
1b8132d9 3287 }
473166b9
LS
3288}
3289
3290const char *current_config_name(void)
3291{
0d44a2da
JK
3292 const char *name;
3293 if (current_config_kvi)
3294 name = current_config_kvi->filename;
3295 else if (cf)
3296 name = cf->name;
3297 else
033abf97 3298 BUG("current_config_name called outside config callback");
0d44a2da 3299 return name ? name : "";
473166b9 3300}
9acc5911
JK
3301
3302enum config_scope current_config_scope(void)
3303{
3304 if (current_config_kvi)
3305 return current_config_kvi->scope;
3306 else
3307 return current_parsing_scope;
473166b9 3308}
a73b3680
NTND
3309
3310int lookup_config(const char **mapping, int nr_mapping, const char *var)
3311{
3312 int i;
3313
3314 for (i = 0; i < nr_mapping; i++) {
3315 const char *name = mapping[i];
3316
3317 if (name && !strcasecmp(var, name))
3318 return i;
3319 }
3320 return -1;
3321}