trace2: find exec-dir before trace2 initialization
[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,
55d34269 245 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
ebaa1bd4 837static int parse_unit_factor(const char *end, uintmax_t *val)
0b87b6e0
BD
838{
839 if (!*end)
840 return 1;
c8deb5a1
SP
841 else if (!strcasecmp(end, "k")) {
842 *val *= 1024;
843 return 1;
844 }
845 else if (!strcasecmp(end, "m")) {
846 *val *= 1024 * 1024;
847 return 1;
848 }
849 else if (!strcasecmp(end, "g")) {
850 *val *= 1024 * 1024 * 1024;
851 return 1;
852 }
853 return 0;
0b87b6e0
BD
854}
855
7192777d 856static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
857{
858 if (value && *value) {
859 char *end;
ebaa1bd4
NA
860 intmax_t val;
861 uintmax_t uval;
862 uintmax_t factor = 1;
863
864 errno = 0;
865 val = strtoimax(value, &end, 0);
866 if (errno == ERANGE)
867 return 0;
33fdd77e
JK
868 if (!parse_unit_factor(end, &factor)) {
869 errno = EINVAL;
c8deb5a1 870 return 0;
33fdd77e 871 }
83915ba5 872 uval = labs(val);
ebaa1bd4 873 uval *= factor;
83915ba5 874 if (uval > max || labs(val) > uval) {
33fdd77e 875 errno = ERANGE;
ebaa1bd4 876 return 0;
33fdd77e 877 }
ebaa1bd4
NA
878 val *= factor;
879 *ret = val;
0b87b6e0
BD
880 return 1;
881 }
33fdd77e 882 errno = EINVAL;
0b87b6e0
BD
883 return 0;
884}
885
0b4dc661 886static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
887{
888 if (value && *value) {
889 char *end;
ebaa1bd4
NA
890 uintmax_t val;
891 uintmax_t oldval;
892
893 errno = 0;
894 val = strtoumax(value, &end, 0);
895 if (errno == ERANGE)
896 return 0;
897 oldval = val;
33fdd77e
JK
898 if (!parse_unit_factor(end, &val)) {
899 errno = EINVAL;
c8deb5a1 900 return 0;
33fdd77e
JK
901 }
902 if (val > max || oldval > val) {
903 errno = ERANGE;
ebaa1bd4 904 return 0;
33fdd77e 905 }
c8deb5a1 906 *ret = val;
0b87b6e0 907 return 1;
17712991 908 }
33fdd77e 909 errno = EINVAL;
0b87b6e0
BD
910 return 0;
911}
912
42d194e9 913static int git_parse_int(const char *value, int *ret)
c1867cea 914{
7192777d 915 intmax_t tmp;
42d194e9 916 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
917 return 0;
918 *ret = tmp;
919 return 1;
920}
921
00160242
JK
922static int git_parse_int64(const char *value, int64_t *ret)
923{
924 intmax_t tmp;
925 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
926 return 0;
927 *ret = tmp;
928 return 1;
929}
930
7192777d
JK
931int git_parse_ulong(const char *value, unsigned long *ret)
932{
933 uintmax_t tmp;
934 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
935 return 0;
936 *ret = tmp;
937 return 1;
938}
939
c79edf73 940int git_parse_ssize_t(const char *value, ssize_t *ret)
37ee680d
DT
941{
942 intmax_t tmp;
943 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
944 return 0;
945 *ret = tmp;
946 return 1;
947}
948
06bdc23b 949NORETURN
2f666581 950static void die_bad_number(const char *name, const char *value)
c1867cea 951{
078fe305
JNA
952 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
953
2f666581
JK
954 if (!value)
955 value = "";
956
1b8132d9 957 if (!(cf && cf->name))
078fe305
JNA
958 die(_("bad numeric config value '%s' for '%s': %s"),
959 value, name, error_type);
1b8132d9
VA
960
961 switch (cf->origin_type) {
962 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
963 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
964 value, name, cf->name, error_type);
1b8132d9 965 case CONFIG_ORIGIN_FILE:
078fe305
JNA
966 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
967 value, name, cf->name, error_type);
1b8132d9 968 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
969 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
970 value, name, error_type);
1b8132d9 971 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
972 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
973 value, name, cf->name, error_type);
1b8132d9 974 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
975 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
976 value, name, cf->name, error_type);
1b8132d9 977 default:
078fe305
JNA
978 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
979 value, name, cf->name, error_type);
1b8132d9 980 }
c1867cea
JK
981}
982
0b87b6e0
BD
983int git_config_int(const char *name, const char *value)
984{
42d194e9
JK
985 int ret;
986 if (!git_parse_int(value, &ret))
2f666581 987 die_bad_number(name, value);
0b87b6e0
BD
988 return ret;
989}
990
00160242
JK
991int64_t git_config_int64(const char *name, const char *value)
992{
993 int64_t ret;
994 if (!git_parse_int64(value, &ret))
995 die_bad_number(name, value);
0b87b6e0
BD
996 return ret;
997}
998
999unsigned long git_config_ulong(const char *name, const char *value)
1000{
1001 unsigned long ret;
1002 if (!git_parse_ulong(value, &ret))
2f666581 1003 die_bad_number(name, value);
0b87b6e0 1004 return ret;
17712991
LT
1005}
1006
37ee680d
DT
1007ssize_t git_config_ssize_t(const char *name, const char *value)
1008{
1009 ssize_t ret;
1010 if (!git_parse_ssize_t(value, &ret))
1011 die_bad_number(name, value);
1012 return ret;
1013}
1014
9be04d64 1015static int git_parse_maybe_bool_text(const char *value)
17712991
LT
1016{
1017 if (!value)
1018 return 1;
1019 if (!*value)
1020 return 0;
8420ccd8
JH
1021 if (!strcasecmp(value, "true")
1022 || !strcasecmp(value, "yes")
1023 || !strcasecmp(value, "on"))
17712991 1024 return 1;
8420ccd8
JH
1025 if (!strcasecmp(value, "false")
1026 || !strcasecmp(value, "no")
1027 || !strcasecmp(value, "off"))
17712991 1028 return 0;
8420ccd8
JH
1029 return -1;
1030}
1031
9be04d64 1032int git_parse_maybe_bool(const char *value)
b2be2f6a 1033{
9be04d64 1034 int v = git_parse_maybe_bool_text(value);
b2be2f6a
JK
1035 if (0 <= v)
1036 return v;
42d194e9 1037 if (git_parse_int(value, &v))
db6195ef 1038 return !!v;
b2be2f6a
JK
1039 return -1;
1040}
1041
8420ccd8
JH
1042int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
1043{
9be04d64 1044 int v = git_parse_maybe_bool_text(value);
8420ccd8
JH
1045 if (0 <= v) {
1046 *is_bool = 1;
1047 return v;
1048 }
a53f2ec6 1049 *is_bool = 0;
c35b0b58 1050 return git_config_int(name, value);
17712991
LT
1051}
1052
a53f2ec6
JH
1053int git_config_bool(const char *name, const char *value)
1054{
1055 int discard;
c35b0b58 1056 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
1057}
1058
ea5105a5
CC
1059int git_config_string(const char **dest, const char *var, const char *value)
1060{
1061 if (!value)
1062 return config_error_nonbool(var);
1063 *dest = xstrdup(value);
1064 return 0;
1065}
1066
395de250
MM
1067int git_config_pathname(const char **dest, const char *var, const char *value)
1068{
1069 if (!value)
1070 return config_error_nonbool(var);
4aad2f16 1071 *dest = expand_user_path(value, 0);
395de250 1072 if (!*dest)
8262aaa2 1073 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
1074 return 0;
1075}
1076
5f967424
HM
1077int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *value)
1078{
1079 if (!value)
1080 return config_error_nonbool(var);
1081 if (parse_expiry_date(value, timestamp))
1082 return error(_("'%s' for '%s' is not a valid timestamp"),
1083 value, var);
1084 return 0;
1085}
1086
6d2f9acc
TB
1087int git_config_color(char *dest, const char *var, const char *value)
1088{
1089 if (!value)
1090 return config_error_nonbool(var);
1091 if (color_parse(value, dest) < 0)
1092 return -1;
1093 return 0;
1094}
1095
70fc5793 1096static int git_default_core_config(const char *var, const char *value, void *cb)
17712991
LT
1097{
1098 /* This needs a better name */
1099 if (!strcmp(var, "core.filemode")) {
1100 trust_executable_bit = git_config_bool(var, value);
1101 return 0;
1102 }
1ce4790b
AR
1103 if (!strcmp(var, "core.trustctime")) {
1104 trust_ctime = git_config_bool(var, value);
1105 return 0;
1106 }
c1b5d738 1107 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
1108 if (!strcasecmp(value, "default"))
1109 check_stat = 1;
1110 else if (!strcasecmp(value, "minimal"))
1111 check_stat = 0;
1112 }
17712991 1113
9378c161
JH
1114 if (!strcmp(var, "core.quotepath")) {
1115 quote_path_fully = git_config_bool(var, value);
1116 return 0;
1117 }
1118
78a8d641
JS
1119 if (!strcmp(var, "core.symlinks")) {
1120 has_symlinks = git_config_bool(var, value);
1121 return 0;
1122 }
1123
0a9b88b7
LT
1124 if (!strcmp(var, "core.ignorecase")) {
1125 ignore_case = git_config_bool(var, value);
1126 return 0;
1127 }
1128
64589a03
JH
1129 if (!strcmp(var, "core.attributesfile"))
1130 return git_config_pathname(&git_attributes_file, var, value);
1131
867ad08a
ÆAB
1132 if (!strcmp(var, "core.hookspath"))
1133 return git_config_pathname(&git_hooks_path, var, value);
1134
7d1864ce
JH
1135 if (!strcmp(var, "core.bare")) {
1136 is_bare_repository_cfg = git_config_bool(var, value);
1137 return 0;
1138 }
1139
5f73076c
JH
1140 if (!strcmp(var, "core.ignorestat")) {
1141 assume_unchanged = git_config_bool(var, value);
1142 return 0;
1143 }
1144
e388c738
JH
1145 if (!strcmp(var, "core.prefersymlinkrefs")) {
1146 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
1147 return 0;
1148 }
1149
6de08ae6 1150 if (!strcmp(var, "core.logallrefupdates")) {
341fb286
CW
1151 if (value && !strcasecmp(value, "always"))
1152 log_all_ref_updates = LOG_REFS_ALWAYS;
1153 else if (git_config_bool(var, value))
1154 log_all_ref_updates = LOG_REFS_NORMAL;
1155 else
1156 log_all_ref_updates = LOG_REFS_NONE;
6de08ae6
SP
1157 return 0;
1158 }
1159
2f8acdb3
JH
1160 if (!strcmp(var, "core.warnambiguousrefs")) {
1161 warn_ambiguous_refs = git_config_bool(var, value);
1162 return 0;
1163 }
1164
a71f09fe 1165 if (!strcmp(var, "core.abbrev")) {
48d5014d
JH
1166 if (!value)
1167 return config_error_nonbool(var);
1168 if (!strcasecmp(value, "auto"))
1169 default_abbrev = -1;
1170 else {
1171 int abbrev = git_config_int(var, value);
1172 if (abbrev < minimum_abbrev || abbrev > 40)
a769bfc7 1173 return error(_("abbrev length out of range: %d"), abbrev);
48d5014d
JH
1174 default_abbrev = abbrev;
1175 }
dce96489
LT
1176 return 0;
1177 }
1178
5b33cb1f
JK
1179 if (!strcmp(var, "core.disambiguate"))
1180 return set_disambiguate_hint_config(var, value);
1181
960ccca6 1182 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
1183 int level = git_config_int(var, value);
1184 if (level == -1)
1185 level = Z_DEFAULT_COMPRESSION;
1186 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1187 die(_("bad zlib compression level %d"), level);
12f6c308 1188 zlib_compression_level = level;
960ccca6
DH
1189 zlib_compression_seen = 1;
1190 return 0;
1191 }
1192
1193 if (!strcmp(var, "core.compression")) {
1194 int level = git_config_int(var, value);
1195 if (level == -1)
1196 level = Z_DEFAULT_COMPRESSION;
1197 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1198 die(_("bad zlib compression level %d"), level);
960ccca6
DH
1199 core_compression_level = level;
1200 core_compression_seen = 1;
1201 if (!zlib_compression_seen)
1202 zlib_compression_level = level;
8de7eeb5
JH
1203 if (!pack_compression_seen)
1204 pack_compression_level = level;
12f6c308
JBH
1205 return 0;
1206 }
1207
60bb8b14 1208 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 1209 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 1210 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
1211
1212 /* This value must be multiple of (pagesize * 2) */
1213 packed_git_window_size /= pgsz_x2;
1214 if (packed_git_window_size < 1)
1215 packed_git_window_size = 1;
1216 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
1217 return 0;
1218 }
1219
15366280 1220 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 1221 big_file_threshold = git_config_ulong(var, value);
15366280
JH
1222 return 0;
1223 }
1224
77ccc5bb 1225 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 1226 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
1227 return 0;
1228 }
1229
18bdec11 1230 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 1231 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
1232 return 0;
1233 }
1234
6c510bee 1235 if (!strcmp(var, "core.autocrlf")) {
d7f46334 1236 if (value && !strcasecmp(value, "input")) {
fd6cce9e 1237 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
1238 return 0;
1239 }
6c510bee
LT
1240 auto_crlf = git_config_bool(var, value);
1241 return 0;
1242 }
1243
21e5ad50 1244 if (!strcmp(var, "core.safecrlf")) {
8462ff43 1245 int eol_rndtrp_die;
21e5ad50 1246 if (value && !strcasecmp(value, "warn")) {
8462ff43 1247 global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
21e5ad50
SP
1248 return 0;
1249 }
8462ff43
TB
1250 eol_rndtrp_die = git_config_bool(var, value);
1251 global_conv_flags_eol = eol_rndtrp_die ?
6cb09125 1252 CONV_EOL_RNDTRP_DIE : 0;
21e5ad50
SP
1253 return 0;
1254 }
1255
942e7747
EB
1256 if (!strcmp(var, "core.eol")) {
1257 if (value && !strcasecmp(value, "lf"))
ec70f52f 1258 core_eol = EOL_LF;
942e7747 1259 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 1260 core_eol = EOL_CRLF;
942e7747 1261 else if (value && !strcasecmp(value, "native"))
ec70f52f 1262 core_eol = EOL_NATIVE;
942e7747 1263 else
ec70f52f 1264 core_eol = EOL_UNSET;
942e7747
EB
1265 return 0;
1266 }
1267
e92d6225
LS
1268 if (!strcmp(var, "core.checkroundtripencoding")) {
1269 check_roundtrip_encoding = xstrdup(value);
1270 return 0;
1271 }
1272
a97a7468
JS
1273 if (!strcmp(var, "core.notesref")) {
1274 notes_ref_name = xstrdup(value);
1275 return 0;
1276 }
1277
806e2ad7
LT
1278 if (!strcmp(var, "core.editor"))
1279 return git_config_string(&editor_program, var, value);
1280
eff80a9f 1281 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
1282 if (!value)
1283 return config_error_nonbool(var);
ad524f83 1284 else if (!strcasecmp(value, "auto"))
84c9dc2c 1285 auto_comment_line_char = 1;
ad524f83 1286 else if (value[0] && !value[1]) {
649409b7 1287 comment_line_char = value[0];
84c9dc2c 1288 auto_comment_line_char = 0;
50b54fd7 1289 } else
a769bfc7 1290 return error(_("core.commentChar should only be one character"));
50b54fd7 1291 return 0;
eff80a9f
JH
1292 }
1293
d3e7da89
AK
1294 if (!strcmp(var, "core.askpass"))
1295 return git_config_string(&askpass_program, var, value);
1296
806e2ad7 1297 if (!strcmp(var, "core.excludesfile"))
395de250 1298 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
1299
1300 if (!strcmp(var, "core.whitespace")) {
1301 if (!value)
1302 return config_error_nonbool(var);
1303 whitespace_rule_cfg = parse_whitespace_rule(value);
1304 return 0;
1305 }
1306
aafe9fba
LT
1307 if (!strcmp(var, "core.fsyncobjectfiles")) {
1308 fsync_object_files = git_config_bool(var, value);
1309 return 0;
1310 }
1311
671c9b7e
LT
1312 if (!strcmp(var, "core.preloadindex")) {
1313 core_preload_index = git_config_bool(var, value);
1314 return 0;
1315 }
1316
348df166
JS
1317 if (!strcmp(var, "core.createobject")) {
1318 if (!strcmp(value, "rename"))
1319 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1320 else if (!strcmp(value, "link"))
1321 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1322 else
8262aaa2 1323 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
1324 return 0;
1325 }
1326
08aefc9e
NTND
1327 if (!strcmp(var, "core.sparsecheckout")) {
1328 core_apply_sparse_checkout = git_config_bool(var, value);
1329 return 0;
1330 }
1331
76759c7d
TB
1332 if (!strcmp(var, "core.precomposeunicode")) {
1333 precomposed_unicode = git_config_bool(var, value);
1334 return 0;
1335 }
1336
a42643aa
JK
1337 if (!strcmp(var, "core.protecthfs")) {
1338 protect_hfs = git_config_bool(var, value);
1339 return 0;
1340 }
1341
2b4c6efc
JS
1342 if (!strcmp(var, "core.protectntfs")) {
1343 protect_ntfs = git_config_bool(var, value);
1344 return 0;
76759c7d
TB
1345 }
1346
1e1e39b3
JH
1347 if (!strcmp(var, "core.partialclonefilter")) {
1348 return git_config_string(&core_partial_clone_filter_default,
1349 var, value);
1350 }
1351
da4398d6
JK
1352 if (!strcmp(var, "core.usereplacerefs")) {
1353 read_replace_refs = git_config_bool(var, value);
1354 return 0;
1355 }
1356
806e2ad7 1357 /* Add other config variables here and to Documentation/config.txt. */
70fc5793 1358 return platform_core_config(var, value, cb);
806e2ad7
LT
1359}
1360
1141f492 1361static int git_default_i18n_config(const char *var, const char *value)
d1364529 1362{
ea5105a5
CC
1363 if (!strcmp(var, "i18n.commitencoding"))
1364 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1365
ea5105a5
CC
1366 if (!strcmp(var, "i18n.logoutputencoding"))
1367 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1368
1141f492
LT
1369 /* Add other config variables here and to Documentation/config.txt. */
1370 return 0;
1371}
039bc64e 1372
1141f492
LT
1373static int git_default_branch_config(const char *var, const char *value)
1374{
9ed36cfa
JS
1375 if (!strcmp(var, "branch.autosetupmerge")) {
1376 if (value && !strcasecmp(value, "always")) {
1377 git_branch_track = BRANCH_TRACK_ALWAYS;
1378 return 0;
1379 }
1380 git_branch_track = git_config_bool(var, value);
1381 return 0;
1382 }
c998ae9b
DS
1383 if (!strcmp(var, "branch.autosetuprebase")) {
1384 if (!value)
1385 return config_error_nonbool(var);
1386 else if (!strcmp(value, "never"))
1387 autorebase = AUTOREBASE_NEVER;
1388 else if (!strcmp(value, "local"))
1389 autorebase = AUTOREBASE_LOCAL;
1390 else if (!strcmp(value, "remote"))
1391 autorebase = AUTOREBASE_REMOTE;
1392 else if (!strcmp(value, "always"))
1393 autorebase = AUTOREBASE_ALWAYS;
1394 else
a769bfc7 1395 return error(_("malformed value for %s"), var);
c998ae9b
DS
1396 return 0;
1397 }
a9cc857a 1398
1ab661dd 1399 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1400 return 0;
1401}
1402
52153747
FAG
1403static int git_default_push_config(const char *var, const char *value)
1404{
1405 if (!strcmp(var, "push.default")) {
1406 if (!value)
1407 return config_error_nonbool(var);
1408 else if (!strcmp(value, "nothing"))
1409 push_default = PUSH_DEFAULT_NOTHING;
1410 else if (!strcmp(value, "matching"))
1411 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1412 else if (!strcmp(value, "simple"))
1413 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1414 else if (!strcmp(value, "upstream"))
1415 push_default = PUSH_DEFAULT_UPSTREAM;
1416 else if (!strcmp(value, "tracking")) /* deprecated */
1417 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1418 else if (!strcmp(value, "current"))
1419 push_default = PUSH_DEFAULT_CURRENT;
1420 else {
a769bfc7
NTND
1421 error(_("malformed value for %s: %s"), var, value);
1422 return error(_("must be one of nothing, matching, simple, "
1423 "upstream or current"));
52153747
FAG
1424 }
1425 return 0;
1426 }
1427
1428 /* Add other config variables here and to Documentation/config.txt. */
1429 return 0;
1430}
1431
d551a488
MSO
1432static int git_default_mailmap_config(const char *var, const char *value)
1433{
1434 if (!strcmp(var, "mailmap.file"))
9352fd57 1435 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1436 if (!strcmp(var, "mailmap.blob"))
1437 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1438
1439 /* Add other config variables here and to Documentation/config.txt. */
1440 return 0;
1441}
1442
409670f3 1443int git_default_config(const char *var, const char *value, void *cb)
1141f492 1444{
59556548 1445 if (starts_with(var, "core."))
70fc5793 1446 return git_default_core_config(var, value, cb);
1141f492 1447
39ab4d09
WH
1448 if (starts_with(var, "user.") ||
1449 starts_with(var, "author.") ||
1450 starts_with(var, "committer."))
409670f3 1451 return git_ident_config(var, value, cb);
1141f492 1452
59556548 1453 if (starts_with(var, "i18n."))
1141f492
LT
1454 return git_default_i18n_config(var, value);
1455
59556548 1456 if (starts_with(var, "branch."))
1141f492
LT
1457 return git_default_branch_config(var, value);
1458
59556548 1459 if (starts_with(var, "push."))
52153747
FAG
1460 return git_default_push_config(var, value);
1461
59556548 1462 if (starts_with(var, "mailmap."))
d551a488
MSO
1463 return git_default_mailmap_config(var, value);
1464
960786e7 1465 if (starts_with(var, "advice.") || starts_with(var, "color.advice"))
75194438
JK
1466 return git_default_advice_config(var, value);
1467
1141f492
LT
1468 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1469 pager_use_color = git_config_bool(var,value);
1470 return 0;
1471 }
1472
568508e7
JH
1473 if (!strcmp(var, "pack.packsizelimit")) {
1474 pack_size_limit_cfg = git_config_ulong(var, value);
1475 return 0;
1476 }
8de7eeb5
JH
1477
1478 if (!strcmp(var, "pack.compression")) {
1479 int level = git_config_int(var, value);
1480 if (level == -1)
1481 level = Z_DEFAULT_COMPRESSION;
1482 else if (level < 0 || level > Z_BEST_COMPRESSION)
1483 die(_("bad pack compression level %d"), level);
1484 pack_compression_level = level;
1485 pack_compression_seen = 1;
1486 return 0;
1487 }
1488
1141f492
LT
1489 /* Add other config variables here and to Documentation/config.txt. */
1490 return 0;
1491}
1492
ca4b5de2 1493/*
b2dc0945 1494 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1495 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1496 * this function.
1497 */
8032cc44
JS
1498static int do_config_from(struct config_source *top, config_fn_t fn, void *data,
1499 const struct config_options *opts)
ca4b5de2
HV
1500{
1501 int ret;
1502
1503 /* push config-file parsing state stack */
1504 top->prev = cf;
1505 top->linenr = 1;
1506 top->eof = 0;
1507 strbuf_init(&top->value, 1024);
1508 strbuf_init(&top->var, 1024);
1509 cf = top;
1510
8032cc44 1511 ret = git_parse_source(fn, data, opts);
ca4b5de2
HV
1512
1513 /* pop config-file parsing state stack */
1514 strbuf_release(&top->value);
1515 strbuf_release(&top->var);
1516 cf = top->prev;
1517
1518 return ret;
1519}
1520
3caec73b 1521static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1522 const enum config_origin_type origin_type,
1523 const char *name, const char *path, FILE *f,
8032cc44 1524 void *data, const struct config_options *opts)
17712991 1525{
3caec73b 1526 struct config_source top;
05e293c1 1527 int ret;
17712991 1528
3caec73b 1529 top.u.file = f;
473166b9 1530 top.origin_type = origin_type;
3caec73b
KS
1531 top.name = name;
1532 top.path = path;
66f97228 1533 top.default_error_action = CONFIG_ERROR_DIE;
3caec73b
KS
1534 top.do_fgetc = config_file_fgetc;
1535 top.do_ungetc = config_file_ungetc;
1536 top.do_ftell = config_file_ftell;
924aaf3e 1537
05e293c1 1538 flockfile(f);
4f4d0b42 1539 ret = do_config_from(&top, fn, data, opts);
05e293c1
JK
1540 funlockfile(f);
1541 return ret;
3caec73b 1542}
924aaf3e 1543
3caec73b
KS
1544static int git_config_from_stdin(config_fn_t fn, void *data)
1545{
8032cc44
JS
1546 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin,
1547 data, NULL);
3caec73b
KS
1548}
1549
8032cc44
JS
1550int git_config_from_file_with_options(config_fn_t fn, const char *filename,
1551 void *data,
1552 const struct config_options *opts)
3caec73b
KS
1553{
1554 int ret = -1;
1555 FILE *f;
924aaf3e 1556
e9d983f1 1557 f = fopen_or_warn(filename, "r");
3caec73b 1558 if (f) {
8032cc44
JS
1559 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename,
1560 filename, f, data, opts);
17712991
LT
1561 fclose(f);
1562 }
1563 return ret;
1564}
10bea152 1565
8032cc44
JS
1566int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1567{
1568 return git_config_from_file_with_options(fn, filename, data, NULL);
1569}
1570
4574f1aa
JK
1571int git_config_from_mem(config_fn_t fn,
1572 const enum config_origin_type origin_type,
1573 const char *name, const char *buf, size_t len,
1574 void *data, const struct config_options *opts)
1bc88819
HV
1575{
1576 struct config_source top;
1577
1578 top.u.buf.buf = buf;
1579 top.u.buf.len = len;
1580 top.u.buf.pos = 0;
473166b9 1581 top.origin_type = origin_type;
1bc88819 1582 top.name = name;
d14d4244 1583 top.path = NULL;
66f97228 1584 top.default_error_action = CONFIG_ERROR_ERROR;
49d6cfa5
JK
1585 top.do_fgetc = config_buf_fgetc;
1586 top.do_ungetc = config_buf_ungetc;
1587 top.do_ftell = config_buf_ftell;
1bc88819 1588
4574f1aa 1589 return do_config_from(&top, fn, data, opts);
1bc88819
HV
1590}
1591
cd73de47 1592int git_config_from_blob_oid(config_fn_t fn,
9ebf689a 1593 const char *name,
cd73de47 1594 const struct object_id *oid,
9ebf689a 1595 void *data)
1bc88819
HV
1596{
1597 enum object_type type;
1598 char *buf;
1599 unsigned long size;
1600 int ret;
1601
b4f5aca4 1602 buf = read_object_file(oid, &type, &size);
1bc88819 1603 if (!buf)
a769bfc7 1604 return error(_("unable to load config blob object '%s'"), name);
1bc88819
HV
1605 if (type != OBJ_BLOB) {
1606 free(buf);
a769bfc7 1607 return error(_("reference '%s' does not point to a blob"), name);
1bc88819
HV
1608 }
1609
4574f1aa
JK
1610 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size,
1611 data, NULL);
1bc88819
HV
1612 free(buf);
1613
1614 return ret;
1615}
1616
1617static int git_config_from_blob_ref(config_fn_t fn,
1618 const char *name,
1619 void *data)
1620{
cd73de47 1621 struct object_id oid;
1bc88819 1622
cd73de47 1623 if (get_oid(name, &oid) < 0)
a769bfc7 1624 return error(_("unable to resolve config blob '%s'"), name);
cd73de47 1625 return git_config_from_blob_oid(fn, name, &oid, data);
1bc88819
HV
1626}
1627
506b17b1
JS
1628const char *git_etc_gitconfig(void)
1629{
7f0e39fa 1630 static const char *system_wide;
2de9de5e
SP
1631 if (!system_wide)
1632 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1633 return system_wide;
506b17b1
JS
1634}
1635
23b0c478
SP
1636/*
1637 * Parse environment variable 'k' as a boolean (in various
1638 * possible spellings); if missing, use the default value 'def'.
1639 */
0ef37164 1640int git_env_bool(const char *k, int def)
ab88c363
JK
1641{
1642 const char *v = getenv(k);
1643 return v ? git_config_bool(k, v) : def;
1644}
1645
23b0c478
SP
1646/*
1647 * Parse environment variable 'k' as ulong with possibly a unit
1648 * suffix; if missing, use the default value 'val'.
1649 */
1650unsigned long git_env_ulong(const char *k, unsigned long val)
1651{
1652 const char *v = getenv(k);
1653 if (v && !git_parse_ulong(v, &val))
a769bfc7 1654 die(_("failed to parse %s"), k);
23b0c478
SP
1655 return val;
1656}
1657
ab88c363
JK
1658int git_config_system(void)
1659{
1660 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1661}
1662
e145a0bc
NTND
1663static int do_git_config_sequence(const struct config_options *opts,
1664 config_fn_t fn, void *data)
4f629539 1665{
c72ee44b 1666 int ret = 0;
509adc33 1667 char *xdg_config = xdg_config_home("config");
4aad2f16 1668 char *user_config = expand_user_path("~/.gitconfig", 0);
e145a0bc
NTND
1669 char *repo_config;
1670
a577fb5f
BW
1671 if (opts->commondir)
1672 repo_config = mkpathdup("%s/config", opts->commondir);
44004872
JS
1673 else if (opts->git_dir)
1674 BUG("git_dir without commondir");
e145a0bc
NTND
1675 else
1676 repo_config = NULL;
5f1a63e0 1677
9acc5911 1678 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
c72ee44b 1679 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
dc871831
DB
1680 ret += git_config_from_file(fn, git_etc_gitconfig(),
1681 data);
5f1a63e0 1682
9acc5911 1683 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1684 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1685 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1686
c72ee44b 1687 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1688 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1689
9acc5911 1690 current_parsing_scope = CONFIG_SCOPE_REPO;
c72ee44b 1691 if (repo_config && !access_or_die(repo_config, R_OK, 0))
aa387407 1692 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1693
58b284a2
NTND
1694 /*
1695 * Note: this should have a new scope, CONFIG_SCOPE_WORKTREE.
1696 * But let's not complicate things before it's actually needed.
1697 */
1698 if (repository_format_worktree_config) {
1699 char *path = git_pathdup("config.worktree");
1700 if (!access_or_die(path, R_OK, 0))
1701 ret += git_config_from_file(fn, path, data);
1702 free(path);
1703 }
1704
9acc5911 1705 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
c72ee44b 1706 if (git_config_from_parameters(fn, data) < 0)
8262aaa2 1707 die(_("unable to parse command-line config"));
8b1fa778 1708
9acc5911 1709 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1710 free(xdg_config);
1711 free(user_config);
80181868 1712 free(repo_config);
c72ee44b 1713 return ret;
4f629539
JH
1714}
1715
dc8441fd
BW
1716int config_with_options(config_fn_t fn, void *data,
1717 struct git_config_source *config_source,
1718 const struct config_options *opts)
dbdf5854 1719{
9b25a0b5
JK
1720 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1721
c48f4b37 1722 if (opts->respect_includes) {
9b25a0b5
JK
1723 inc.fn = fn;
1724 inc.data = data;
c48f4b37 1725 inc.opts = opts;
9b25a0b5
JK
1726 fn = git_config_include;
1727 data = &inc;
1728 }
dbdf5854 1729
c9b5e2a5
JK
1730 /*
1731 * If we have a specific filename, use it. Otherwise, follow the
1732 * regular lookup sequence.
1733 */
3caec73b
KS
1734 if (config_source && config_source->use_stdin)
1735 return git_config_from_stdin(fn, data);
1736 else if (config_source && config_source->file)
c8985ce0
KS
1737 return git_config_from_file(fn, config_source->file, data);
1738 else if (config_source && config_source->blob)
1739 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1740
e145a0bc 1741 return do_git_config_sequence(opts, fn, data);
dbdf5854
NTND
1742}
1743
155ef25f 1744static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1745{
155ef25f
TA
1746 int i, value_index;
1747 struct string_list *values;
1748 struct config_set_element *entry;
1749 struct configset_list *list = &cs->list;
155ef25f
TA
1750
1751 for (i = 0; i < list->nr; i++) {
1752 entry = list->items[i].e;
1753 value_index = list->items[i].value_index;
1754 values = &entry->value_list;
0d44a2da
JK
1755
1756 current_config_kvi = values->items[value_index].util;
1757
1758 if (fn(entry->key, values->items[value_index].string, data) < 0)
1759 git_die_config_linenr(entry->key,
1760 current_config_kvi->filename,
1761 current_config_kvi->linenr);
1762
1763 current_config_kvi = NULL;
155ef25f
TA
1764 }
1765}
1766
0654aa57
JS
1767void read_early_config(config_fn_t cb, void *data)
1768{
c48f4b37 1769 struct config_options opts = {0};
d3fb71b3
BW
1770 struct strbuf commondir = STRBUF_INIT;
1771 struct strbuf gitdir = STRBUF_INIT;
1a27409a 1772
c48f4b37 1773 opts.respect_includes = 1;
0654aa57 1774
a577fb5f
BW
1775 if (have_git_dir()) {
1776 opts.commondir = get_git_common_dir();
2185fde5 1777 opts.git_dir = get_git_dir();
0654aa57 1778 /*
1a27409a
JS
1779 * When setup_git_directory() was not yet asked to discover the
1780 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1781 * is any repository config we should use (but unlike
1782 * setup_git_directory_gently(), no global state is changed, most
1783 * notably, the current working directory is still the same after the
1784 * call).
0654aa57 1785 */
a577fb5f
BW
1786 } else if (!discover_git_directory(&commondir, &gitdir)) {
1787 opts.commondir = commondir.buf;
d3fb71b3 1788 opts.git_dir = gitdir.buf;
a577fb5f 1789 }
2185fde5 1790
dc8441fd 1791 config_with_options(cb, data, NULL, &opts);
0654aa57 1792
d3fb71b3
BW
1793 strbuf_release(&commondir);
1794 strbuf_release(&gitdir);
0654aa57
JS
1795}
1796
3c8687a7
TA
1797static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1798{
1799 struct config_set_element k;
1800 struct config_set_element *found_entry;
1801 char *normalized_key;
3c8687a7
TA
1802 /*
1803 * `key` may come from the user, so normalize it before using it
1804 * for querying entries from the hashmap.
1805 */
270cd9ea 1806 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1807 return NULL;
1808
1809 hashmap_entry_init(&k, strhash(normalized_key));
1810 k.key = normalized_key;
1811 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1812 free(normalized_key);
1813 return found_entry;
1814}
1815
1816static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1817{
1818 struct config_set_element *e;
3df8fd62 1819 struct string_list_item *si;
155ef25f 1820 struct configset_list_item *l_item;
3df8fd62
TA
1821 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1822
3c8687a7
TA
1823 e = configset_find_element(cs, key);
1824 /*
1825 * Since the keys are being fed by git_config*() callback mechanism, they
1826 * are already normalized. So simply add them without any further munging.
1827 */
1828 if (!e) {
1829 e = xmalloc(sizeof(*e));
1830 hashmap_entry_init(e, strhash(key));
1831 e->key = xstrdup(key);
1832 string_list_init(&e->value_list, 1);
1833 hashmap_add(&cs->config_hash, e);
1834 }
8c53f071 1835 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1836
1837 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1838 l_item = &cs->list.items[cs->list.nr++];
1839 l_item->e = e;
1840 l_item->value_index = e->value_list.nr - 1;
1841
3258258f 1842 if (!cf)
033abf97 1843 BUG("configset_add_value has no source");
3258258f 1844 if (cf->name) {
3df8fd62
TA
1845 kv_info->filename = strintern(cf->name);
1846 kv_info->linenr = cf->linenr;
1b8132d9 1847 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1848 } else {
1849 /* for values read from `git_config_from_parameters()` */
1850 kv_info->filename = NULL;
1851 kv_info->linenr = -1;
1b8132d9 1852 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1853 }
9acc5911 1854 kv_info->scope = current_parsing_scope;
3df8fd62 1855 si->util = kv_info;
3c8687a7
TA
1856
1857 return 0;
1858}
1859
7663cdc8 1860static int config_set_element_cmp(const void *unused_cmp_data,
77bdc097
SB
1861 const void *entry,
1862 const void *entry_or_key,
7663cdc8 1863 const void *unused_keydata)
3c8687a7 1864{
77bdc097
SB
1865 const struct config_set_element *e1 = entry;
1866 const struct config_set_element *e2 = entry_or_key;
1867
3c8687a7
TA
1868 return strcmp(e1->key, e2->key);
1869}
1870
1871void git_configset_init(struct config_set *cs)
1872{
77bdc097 1873 hashmap_init(&cs->config_hash, config_set_element_cmp, NULL, 0);
3c8687a7 1874 cs->hash_initialized = 1;
155ef25f
TA
1875 cs->list.nr = 0;
1876 cs->list.alloc = 0;
1877 cs->list.items = NULL;
3c8687a7
TA
1878}
1879
1880void git_configset_clear(struct config_set *cs)
1881{
1882 struct config_set_element *entry;
1883 struct hashmap_iter iter;
1884 if (!cs->hash_initialized)
1885 return;
1886
1887 hashmap_iter_init(&cs->config_hash, &iter);
1888 while ((entry = hashmap_iter_next(&iter))) {
1889 free(entry->key);
3df8fd62 1890 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1891 }
1892 hashmap_free(&cs->config_hash, 1);
1893 cs->hash_initialized = 0;
155ef25f
TA
1894 free(cs->list.items);
1895 cs->list.nr = 0;
1896 cs->list.alloc = 0;
1897 cs->list.items = NULL;
3c8687a7
TA
1898}
1899
1900static int config_set_callback(const char *key, const char *value, void *cb)
1901{
1902 struct config_set *cs = cb;
1903 configset_add_value(cs, key, value);
1904 return 0;
1905}
1906
1907int git_configset_add_file(struct config_set *cs, const char *filename)
1908{
1909 return git_config_from_file(config_set_callback, filename, cs);
1910}
1911
1912int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1913{
1914 const struct string_list *values = NULL;
1915 /*
1916 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1917 * queried key in the files of the configset, the value returned will be the last
1918 * value in the value list for that key.
1919 */
1920 values = git_configset_get_value_multi(cs, key);
1921
1922 if (!values)
1923 return 1;
1924 assert(values->nr > 0);
1925 *value = values->items[values->nr - 1].string;
1926 return 0;
1927}
1928
1929const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1930{
1931 struct config_set_element *e = configset_find_element(cs, key);
1932 return e ? &e->value_list : NULL;
1933}
1934
1935int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1936{
1937 const char *value;
1938 if (!git_configset_get_value(cs, key, &value))
1939 return git_config_string(dest, key, value);
1940 else
1941 return 1;
1942}
1943
1944int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1945{
1946 return git_configset_get_string_const(cs, key, (const char **)dest);
1947}
1948
1949int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1950{
1951 const char *value;
1952 if (!git_configset_get_value(cs, key, &value)) {
1953 *dest = git_config_int(key, value);
1954 return 0;
1955 } else
1956 return 1;
1957}
1958
1959int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1960{
1961 const char *value;
1962 if (!git_configset_get_value(cs, key, &value)) {
1963 *dest = git_config_ulong(key, value);
1964 return 0;
1965 } else
1966 return 1;
1967}
1968
1969int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1970{
1971 const char *value;
1972 if (!git_configset_get_value(cs, key, &value)) {
1973 *dest = git_config_bool(key, value);
1974 return 0;
1975 } else
1976 return 1;
1977}
1978
1979int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1980 int *is_bool, int *dest)
1981{
1982 const char *value;
1983 if (!git_configset_get_value(cs, key, &value)) {
1984 *dest = git_config_bool_or_int(key, value, is_bool);
1985 return 0;
1986 } else
1987 return 1;
1988}
1989
1990int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1991{
1992 const char *value;
1993 if (!git_configset_get_value(cs, key, &value)) {
89576613 1994 *dest = git_parse_maybe_bool(value);
3c8687a7
TA
1995 if (*dest == -1)
1996 return -1;
1997 return 0;
1998 } else
1999 return 1;
2000}
2001
2002int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
2003{
2004 const char *value;
2005 if (!git_configset_get_value(cs, key, &value))
2006 return git_config_pathname(dest, key, value);
2007 else
2008 return 1;
2009}
2010
3b256228
BW
2011/* Functions use to read configuration from a repository */
2012static void repo_read_config(struct repository *repo)
3c8687a7 2013{
1703751f 2014 struct config_options opts = { 0 };
3b256228
BW
2015
2016 opts.respect_includes = 1;
2017 opts.commondir = repo->commondir;
2018 opts.git_dir = repo->gitdir;
2019
2020 if (!repo->config)
2021 repo->config = xcalloc(1, sizeof(struct config_set));
2022 else
2023 git_configset_clear(repo->config);
2024
2025 git_configset_init(repo->config);
2026
2027 if (config_with_options(config_set_callback, repo->config, NULL, &opts) < 0)
2028 /*
2029 * config_with_options() normally returns only
2030 * zero, as most errors are fatal, and
2031 * non-fatal potential errors are guarded by "if"
2032 * statements that are entered only when no error is
2033 * possible.
2034 *
2035 * If we ever encounter a non-fatal error, it means
2036 * something went really wrong and we should stop
2037 * immediately.
2038 */
2039 die(_("unknown error occurred while reading the configuration files"));
2040}
2041
2042static void git_config_check_init(struct repository *repo)
2043{
2044 if (repo->config && repo->config->hash_initialized)
3c8687a7 2045 return;
3b256228 2046 repo_read_config(repo);
3c8687a7
TA
2047}
2048
3b256228 2049static void repo_config_clear(struct repository *repo)
3c8687a7 2050{
3b256228 2051 if (!repo->config || !repo->config->hash_initialized)
3c8687a7 2052 return;
3b256228 2053 git_configset_clear(repo->config);
3c8687a7
TA
2054}
2055
3b256228 2056void repo_config(struct repository *repo, config_fn_t fn, void *data)
3c8687a7 2057{
3b256228
BW
2058 git_config_check_init(repo);
2059 configset_iter(repo->config, fn, data);
3c8687a7
TA
2060}
2061
3b256228
BW
2062int repo_config_get_value(struct repository *repo,
2063 const char *key, const char **value)
3c8687a7 2064{
3b256228
BW
2065 git_config_check_init(repo);
2066 return git_configset_get_value(repo->config, key, value);
3c8687a7
TA
2067}
2068
3b256228
BW
2069const struct string_list *repo_config_get_value_multi(struct repository *repo,
2070 const char *key)
2071{
2072 git_config_check_init(repo);
2073 return git_configset_get_value_multi(repo->config, key);
2074}
2075
2076int repo_config_get_string_const(struct repository *repo,
2077 const char *key, const char **dest)
2078{
2079 int ret;
2080 git_config_check_init(repo);
2081 ret = git_configset_get_string_const(repo->config, key, dest);
2082 if (ret < 0)
2083 git_die_config(key, NULL);
2084 return ret;
2085}
2086
2087int repo_config_get_string(struct repository *repo,
2088 const char *key, char **dest)
2089{
2090 git_config_check_init(repo);
2091 return repo_config_get_string_const(repo, key, (const char **)dest);
2092}
2093
2094int repo_config_get_int(struct repository *repo,
2095 const char *key, int *dest)
2096{
2097 git_config_check_init(repo);
2098 return git_configset_get_int(repo->config, key, dest);
2099}
2100
2101int repo_config_get_ulong(struct repository *repo,
2102 const char *key, unsigned long *dest)
2103{
2104 git_config_check_init(repo);
2105 return git_configset_get_ulong(repo->config, key, dest);
2106}
2107
2108int repo_config_get_bool(struct repository *repo,
2109 const char *key, int *dest)
2110{
2111 git_config_check_init(repo);
2112 return git_configset_get_bool(repo->config, key, dest);
2113}
2114
2115int repo_config_get_bool_or_int(struct repository *repo,
2116 const char *key, int *is_bool, int *dest)
2117{
2118 git_config_check_init(repo);
2119 return git_configset_get_bool_or_int(repo->config, key, is_bool, dest);
2120}
2121
2122int repo_config_get_maybe_bool(struct repository *repo,
2123 const char *key, int *dest)
2124{
2125 git_config_check_init(repo);
2126 return git_configset_get_maybe_bool(repo->config, key, dest);
2127}
2128
2129int repo_config_get_pathname(struct repository *repo,
2130 const char *key, const char **dest)
3c8687a7 2131{
5a80e97c 2132 int ret;
3b256228
BW
2133 git_config_check_init(repo);
2134 ret = git_configset_get_pathname(repo->config, key, dest);
5a80e97c
TA
2135 if (ret < 0)
2136 git_die_config(key, NULL);
2137 return ret;
3c8687a7
TA
2138}
2139
3b256228
BW
2140/* Functions used historically to read configuration from 'the_repository' */
2141void git_config(config_fn_t fn, void *data)
2142{
2143 repo_config(the_repository, fn, data);
2144}
2145
2146void git_config_clear(void)
2147{
2148 repo_config_clear(the_repository);
2149}
2150
2151int git_config_get_value(const char *key, const char **value)
2152{
2153 return repo_config_get_value(the_repository, key, value);
2154}
2155
2156const struct string_list *git_config_get_value_multi(const char *key)
2157{
2158 return repo_config_get_value_multi(the_repository, key);
2159}
2160
2161int git_config_get_string_const(const char *key, const char **dest)
2162{
2163 return repo_config_get_string_const(the_repository, key, dest);
2164}
2165
3c8687a7
TA
2166int git_config_get_string(const char *key, char **dest)
2167{
3b256228 2168 return repo_config_get_string(the_repository, key, dest);
3c8687a7
TA
2169}
2170
2171int git_config_get_int(const char *key, int *dest)
2172{
3b256228 2173 return repo_config_get_int(the_repository, key, dest);
3c8687a7
TA
2174}
2175
2176int git_config_get_ulong(const char *key, unsigned long *dest)
2177{
3b256228 2178 return repo_config_get_ulong(the_repository, key, dest);
3c8687a7
TA
2179}
2180
2181int git_config_get_bool(const char *key, int *dest)
2182{
3b256228 2183 return repo_config_get_bool(the_repository, key, dest);
3c8687a7
TA
2184}
2185
2186int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
2187{
3b256228 2188 return repo_config_get_bool_or_int(the_repository, key, is_bool, dest);
3c8687a7
TA
2189}
2190
2191int git_config_get_maybe_bool(const char *key, int *dest)
2192{
3b256228 2193 return repo_config_get_maybe_bool(the_repository, key, dest);
3c8687a7
TA
2194}
2195
2196int git_config_get_pathname(const char *key, const char **dest)
2197{
3b256228 2198 return repo_config_get_pathname(the_repository, key, dest);
5a80e97c
TA
2199}
2200
77d67977
CC
2201int git_config_get_expiry(const char *key, const char **output)
2202{
2203 int ret = git_config_get_string_const(key, output);
2204 if (ret)
2205 return ret;
2206 if (strcmp(*output, "now")) {
dddbad72 2207 timestamp_t now = approxidate("now");
77d67977
CC
2208 if (approxidate(*output) >= now)
2209 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
2210 }
2211 return ret;
2212}
2213
6e96cb52
JH
2214int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now)
2215{
2216 char *expiry_string;
2217 intmax_t days;
2218 timestamp_t when;
2219
2220 if (git_config_get_string(key, &expiry_string))
2221 return 1; /* no such thing */
2222
2223 if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) {
2224 const int scale = 86400;
2225 *expiry = now - days * scale;
2226 return 0;
2227 }
2228
2229 if (!parse_expiry_date(expiry_string, &when)) {
2230 *expiry = when;
2231 return 0;
2232 }
2233 return -1; /* thing exists but cannot be parsed */
2234}
2235
435ec090
CC
2236int git_config_get_untracked_cache(void)
2237{
2238 int val = -1;
2239 const char *v;
2240
dae6c322
CC
2241 /* Hack for test programs like test-dump-untracked-cache */
2242 if (ignore_untracked_cache_config)
2243 return -1;
2244
435ec090
CC
2245 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
2246 return val;
2247
2248 if (!git_config_get_value("core.untrackedcache", &v)) {
2249 if (!strcasecmp(v, "keep"))
2250 return -1;
2251
f60ef2d6
CC
2252 error(_("unknown core.untrackedCache value '%s'; "
2253 "using 'keep' default value"), v);
435ec090
CC
2254 return -1;
2255 }
2256
2257 return -1; /* default value */
2258}
2259
1f44b09b
CC
2260int git_config_get_split_index(void)
2261{
2262 int val;
2263
2264 if (!git_config_get_maybe_bool("core.splitindex", &val))
2265 return val;
2266
2267 return -1; /* default value */
2268}
2269
72dcb7b3
CC
2270int git_config_get_max_percent_split_change(void)
2271{
2272 int val = -1;
2273
2274 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2275 if (0 <= val && val <= 100)
2276 return val;
2277
2278 return error(_("splitIndex.maxPercentChange value '%d' "
2279 "should be between 0 and 100"), val);
2280 }
2281
2282 return -1; /* default value */
2283}
2284
883e248b
BP
2285int git_config_get_fsmonitor(void)
2286{
2287 if (git_config_get_pathname("core.fsmonitor", &core_fsmonitor))
4cb54d0a 2288 core_fsmonitor = getenv("GIT_TEST_FSMONITOR");
883e248b
BP
2289
2290 if (core_fsmonitor && !*core_fsmonitor)
2291 core_fsmonitor = NULL;
2292
2293 if (core_fsmonitor)
2294 return 1;
2295
2296 return 0;
2297}
2298
2a9dedef 2299int git_config_get_index_threads(int *dest)
c780b9cf 2300{
2a9dedef 2301 int is_bool, val;
c780b9cf
BP
2302
2303 val = git_env_ulong("GIT_TEST_INDEX_THREADS", 0);
2a9dedef
JN
2304 if (val) {
2305 *dest = val;
2306 return 0;
2307 }
c780b9cf
BP
2308
2309 if (!git_config_get_bool_or_int("index.threads", &is_bool, &val)) {
2310 if (is_bool)
2a9dedef 2311 *dest = val ? 0 : 1;
c780b9cf 2312 else
2a9dedef
JN
2313 *dest = val;
2314 return 0;
c780b9cf
BP
2315 }
2316
2a9dedef 2317 return 1;
c780b9cf
BP
2318}
2319
5a80e97c
TA
2320NORETURN
2321void git_die_config_linenr(const char *key, const char *filename, int linenr)
2322{
2323 if (!filename)
2324 die(_("unable to parse '%s' from command-line config"), key);
2325 else
2326 die(_("bad config variable '%s' in file '%s' at line %d"),
2327 key, filename, linenr);
2328}
2329
2330NORETURN __attribute__((format(printf, 2, 3)))
2331void git_die_config(const char *key, const char *err, ...)
2332{
2333 const struct string_list *values;
2334 struct key_value_info *kv_info;
2335
2336 if (err) {
2337 va_list params;
2338 va_start(params, err);
2339 vreportf("error: ", err, params);
2340 va_end(params);
2341 }
2342 values = git_config_get_value_multi(key);
2343 kv_info = values->items[values->nr - 1].util;
2344 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2345}
2346
10bea152
JS
2347/*
2348 * Find all the stuff for git_config_set() below.
2349 */
4ddba79d 2350
fee8572c 2351struct config_store_data {
10bea152 2352 int baselen;
4b25d091 2353 char *key;
f98d863d 2354 int do_not_match;
4b25d091 2355 regex_t *value_regex;
4ddba79d 2356 int multi_replace;
6ae996f2
JS
2357 struct {
2358 size_t begin, end;
2359 enum config_event_t type;
22aedfcc 2360 int is_keys_section;
6ae996f2
JS
2361 } *parsed;
2362 unsigned int parsed_nr, parsed_alloc, *seen, seen_nr, seen_alloc;
5221c315 2363 unsigned int key_seen:1, section_seen:1, is_keys_section:1;
fee8572c 2364};
10bea152 2365
2a00e594
2366static void config_store_data_clear(struct config_store_data *store)
2367{
e7347cb9 2368 free(store->key);
3b82542d
2369 if (store->value_regex != NULL &&
2370 store->value_regex != CONFIG_REGEX_NONE) {
2371 regfree(store->value_regex);
2372 free(store->value_regex);
2373 }
2a00e594
2374 free(store->parsed);
2375 free(store->seen);
2376 memset(store, 0, sizeof(*store));
2377}
2378
fee8572c
JS
2379static int matches(const char *key, const char *value,
2380 const struct config_store_data *store)
f98d863d 2381{
fee8572c 2382 if (strcmp(key, store->key))
c1063be2 2383 return 0; /* not ours */
fee8572c 2384 if (!store->value_regex)
c1063be2 2385 return 1; /* always matches */
fee8572c 2386 if (store->value_regex == CONFIG_REGEX_NONE)
c1063be2
JK
2387 return 0; /* never matches */
2388
fee8572c
JS
2389 return store->do_not_match ^
2390 (value && !regexec(store->value_regex, value, 0, NULL, 0));
f98d863d
JS
2391}
2392
6ae996f2
JS
2393static int store_aux_event(enum config_event_t type,
2394 size_t begin, size_t end, void *data)
2395{
2396 struct config_store_data *store = data;
2397
2398 ALLOC_GROW(store->parsed, store->parsed_nr + 1, store->parsed_alloc);
2399 store->parsed[store->parsed_nr].begin = begin;
2400 store->parsed[store->parsed_nr].end = end;
2401 store->parsed[store->parsed_nr].type = type;
6ae996f2
JS
2402
2403 if (type == CONFIG_EVENT_SECTION) {
2d84f13d
SB
2404 int (*cmpfn)(const char *, const char *, size_t);
2405
6ae996f2 2406 if (cf->var.len < 2 || cf->var.buf[cf->var.len - 1] != '.')
a769bfc7 2407 return error(_("invalid section name '%s'"), cf->var.buf);
6ae996f2 2408
2d84f13d
SB
2409 if (cf->subsection_case_sensitive)
2410 cmpfn = strncasecmp;
2411 else
2412 cmpfn = strncmp;
2413
6ae996f2 2414 /* Is this the section we were looking for? */
22aedfcc
JS
2415 store->is_keys_section =
2416 store->parsed[store->parsed_nr].is_keys_section =
2417 cf->var.len - 1 == store->baselen &&
2d84f13d 2418 !cmpfn(cf->var.buf, store->key, store->baselen);
c71d8bb3
JS
2419 if (store->is_keys_section) {
2420 store->section_seen = 1;
2421 ALLOC_GROW(store->seen, store->seen_nr + 1,
2422 store->seen_alloc);
2423 store->seen[store->seen_nr] = store->parsed_nr;
2424 }
6ae996f2
JS
2425 }
2426
22aedfcc
JS
2427 store->parsed_nr++;
2428
6ae996f2 2429 return 0;
f98d863d
JS
2430}
2431
4b25d091 2432static int store_aux(const char *key, const char *value, void *cb)
10bea152 2433{
fee8572c 2434 struct config_store_data *store = cb;
ae9ee41d 2435
5221c315 2436 if (store->key_seen) {
fee8572c 2437 if (matches(key, value, store)) {
668b9ade 2438 if (store->seen_nr == 1 && store->multi_replace == 0) {
8262aaa2 2439 warning(_("%s has multiple values"), key);
10bea152 2440 }
4ddba79d 2441
668b9ade
JS
2442 ALLOC_GROW(store->seen, store->seen_nr + 1,
2443 store->seen_alloc);
83786fa4 2444
6ae996f2 2445 store->seen[store->seen_nr] = store->parsed_nr;
668b9ade 2446 store->seen_nr++;
10bea152 2447 }
5221c315 2448 } else if (store->is_keys_section) {
ae9ee41d 2449 /*
6ae996f2
JS
2450 * Do not increment matches yet: this may not be a match, but we
2451 * are in the desired section.
ae9ee41d 2452 */
6ae996f2
JS
2453 ALLOC_GROW(store->seen, store->seen_nr + 1, store->seen_alloc);
2454 store->seen[store->seen_nr] = store->parsed_nr;
5221c315 2455 store->section_seen = 1;
ae9ee41d 2456
6ae996f2
JS
2457 if (matches(key, value, store)) {
2458 store->seen_nr++;
2459 store->key_seen = 1;
bdf0ef08 2460 }
10bea152 2461 }
5221c315 2462
10bea152
JS
2463 return 0;
2464}
2465
64c0d71c 2466static int write_error(const char *filename)
480c9e52 2467{
a769bfc7 2468 error(_("failed to write new configuration file %s"), filename);
480c9e52
AW
2469
2470 /* Same error code as "failed to rename". */
2471 return 4;
2472}
2473
fee8572c
JS
2474static struct strbuf store_create_section(const char *key,
2475 const struct config_store_data *store)
10bea152 2476{
cb891a59 2477 const char *dot;
d9bd4cbb 2478 int i;
f285a2d7 2479 struct strbuf sb = STRBUF_INIT;
d14f7764 2480
fee8572c 2481 dot = memchr(key, '.', store->baselen);
d14f7764 2482 if (dot) {
cb891a59 2483 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
fee8572c 2484 for (i = dot - key + 1; i < store->baselen; i++) {
e5c349ba 2485 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2486 strbuf_addch(&sb, '\\');
2487 strbuf_addch(&sb, key[i]);
d14f7764 2488 }
cb891a59
KH
2489 strbuf_addstr(&sb, "\"]\n");
2490 } else {
fee8572c 2491 strbuf_addf(&sb, "[%.*s]\n", store->baselen, key);
d14f7764
LT
2492 }
2493
5463caab
SD
2494 return sb;
2495}
2496
fee8572c
JS
2497static ssize_t write_section(int fd, const char *key,
2498 const struct config_store_data *store)
5463caab 2499{
fee8572c 2500 struct strbuf sb = store_create_section(key, store);
3b48045c 2501 ssize_t ret;
5463caab 2502
782c030e 2503 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59 2504 strbuf_release(&sb);
480c9e52 2505
d9bd4cbb 2506 return ret;
10bea152
JS
2507}
2508
fee8572c
JS
2509static ssize_t write_pair(int fd, const char *key, const char *value,
2510 const struct config_store_data *store)
10bea152 2511{
d9bd4cbb
JK
2512 int i;
2513 ssize_t ret;
fee8572c 2514 int length = strlen(key + store->baselen + 1);
cb891a59 2515 const char *quote = "";
f285a2d7 2516 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2517
6281f394
JM
2518 /*
2519 * Check to see if the value needs to be surrounded with a dq pair.
2520 * Note that problematic characters are always backslash-quoted; this
2521 * check is about not losing leading or trailing SP and strings that
2522 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2523 * configuration parser.
2524 */
cdd4fb15 2525 if (value[0] == ' ')
cb891a59 2526 quote = "\"";
cdd4fb15
BG
2527 for (i = 0; value[i]; i++)
2528 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2529 quote = "\"";
2530 if (i && value[i - 1] == ' ')
2531 quote = "\"";
2532
cb891a59 2533 strbuf_addf(&sb, "\t%.*s = %s",
fee8572c 2534 length, key + store->baselen + 1, quote);
10bea152 2535
10bea152
JS
2536 for (i = 0; value[i]; i++)
2537 switch (value[i]) {
480c9e52 2538 case '\n':
cb891a59 2539 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2540 break;
2541 case '\t':
cb891a59 2542 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2543 break;
2544 case '"':
2545 case '\\':
cb891a59 2546 strbuf_addch(&sb, '\\');
1cf01a34 2547 /* fallthrough */
480c9e52 2548 default:
cb891a59 2549 strbuf_addch(&sb, value[i]);
480c9e52
AW
2550 break;
2551 }
cb891a59
KH
2552 strbuf_addf(&sb, "%s\n", quote);
2553
d9bd4cbb 2554 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59
KH
2555 strbuf_release(&sb);
2556
d9bd4cbb 2557 return ret;
10bea152
JS
2558}
2559
22aedfcc
JS
2560/*
2561 * If we are about to unset the last key(s) in a section, and if there are
2562 * no comments surrounding (or included in) the section, we will want to
2563 * extend begin/end to remove the entire section.
2564 *
2565 * Note: the parameter `seen_ptr` points to the index into the store.seen
2566 * array. * This index may be incremented if a section has more than one
2567 * entry (which all are to be removed).
2568 */
2569static void maybe_remove_section(struct config_store_data *store,
22aedfcc
JS
2570 size_t *begin_offset, size_t *end_offset,
2571 int *seen_ptr)
4ddba79d 2572{
22aedfcc
JS
2573 size_t begin;
2574 int i, seen, section_seen = 0;
4ddba79d 2575
22aedfcc
JS
2576 /*
2577 * First, ensure that this is the first key, and that there are no
2578 * comments before the entry nor before the section header.
2579 */
2580 seen = *seen_ptr;
2581 for (i = store->seen[seen]; i > 0; i--) {
2582 enum config_event_t type = store->parsed[i - 1].type;
2583
2584 if (type == CONFIG_EVENT_COMMENT)
2585 /* There is a comment before this entry or section */
2586 return;
2587 if (type == CONFIG_EVENT_ENTRY) {
2588 if (!section_seen)
2589 /* This is not the section's first entry. */
2590 return;
2591 /* We encountered no comment before the section. */
2592 break;
2593 }
2594 if (type == CONFIG_EVENT_SECTION) {
2595 if (!store->parsed[i - 1].is_keys_section)
2596 break;
2597 section_seen = 1;
4ddba79d 2598 }
7a31cc0f 2599 }
22aedfcc
JS
2600 begin = store->parsed[i].begin;
2601
2602 /*
2603 * Next, make sure that we are removing he last key(s) in the section,
2604 * and that there are no comments that are possibly about the current
2605 * section.
2606 */
2607 for (i = store->seen[seen] + 1; i < store->parsed_nr; i++) {
2608 enum config_event_t type = store->parsed[i].type;
4ddba79d 2609
22aedfcc
JS
2610 if (type == CONFIG_EVENT_COMMENT)
2611 return;
2612 if (type == CONFIG_EVENT_SECTION) {
2613 if (store->parsed[i].is_keys_section)
2614 continue;
2615 break;
2616 }
2617 if (type == CONFIG_EVENT_ENTRY) {
2618 if (++seen < store->seen_nr &&
2619 i == store->seen[seen])
2620 /* We want to remove this entry, too */
2621 continue;
2622 /* There is another entry in this section. */
2623 return;
2624 }
2625 }
2626
2627 /*
2628 * We are really removing the last entry/entries from this section, and
2629 * there are no enclosed or surrounding comments. Remove the entire,
2630 * now-empty section.
2631 */
2632 *seen_ptr = seen;
2633 *begin_offset = begin;
2634 if (i < store->parsed_nr)
2635 *end_offset = store->parsed[i].begin;
2636 else
2637 *end_offset = store->parsed[store->parsed_nr - 1].end;
4ddba79d
JS
2638}
2639
30598ad0
PS
2640int git_config_set_in_file_gently(const char *config_filename,
2641 const char *key, const char *value)
5ec31182 2642{
30598ad0 2643 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2644}
2645
3d180648
PS
2646void git_config_set_in_file(const char *config_filename,
2647 const char *key, const char *value)
10bea152 2648{
3d180648 2649 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2650}
2651
30598ad0 2652int git_config_set_gently(const char *key, const char *value)
10bea152 2653{
30598ad0 2654 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2655}
2656
3d180648 2657void git_config_set(const char *key, const char *value)
b4c8aba6 2658{
3d180648 2659 git_config_set_multivar(key, value, NULL, 0);
ee4512ed
JH
2660
2661 trace2_cmd_set_config(key, value);
10bea152
JS
2662}
2663
2664/*
2665 * If value==NULL, unset in (remove from) config,
2666 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2667 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2668 * (only add a new one)
4ddba79d
JS
2669 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2670 * else all matching key/values (regardless how many) are removed,
2671 * before the new pair is written.
10bea152
JS
2672 *
2673 * Returns 0 on success.
2674 *
2675 * This function does this:
2676 *
2677 * - it locks the config file by creating ".git/config.lock"
2678 *
2679 * - it then parses the config using store_aux() as validator to find
2680 * the position on the key/value pair to replace. If it is to be unset,
2681 * it must be found exactly once.
2682 *
2683 * - the config file is mmap()ed and the part before the match (if any) is
2684 * written to the lock file, then the changed part and the rest.
2685 *
2686 * - the config file is removed and the lock file rename()d to it.
2687 *
2688 */
30598ad0
PS
2689int git_config_set_multivar_in_file_gently(const char *config_filename,
2690 const char *key, const char *value,
2691 const char *value_regex,
2692 int multi_replace)
10bea152 2693{
54d160ec 2694 int fd = -1, in_fd = -1;
dafc88b1 2695 int ret;
bfffb48c 2696 struct lock_file lock = LOCK_INIT;
0a5f5759 2697 char *filename_buf = NULL;
3a1b3126
JK
2698 char *contents = NULL;
2699 size_t contents_sz;
fee8572c
JS
2700 struct config_store_data store;
2701
2702 memset(&store, 0, sizeof(store));
4ddba79d 2703
b09c53a3
LP
2704 /* parse-key returns negative; flip the sign to feed exit(3) */
2705 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2706 if (ret)
dafc88b1 2707 goto out_free;
b17e659d
JS
2708
2709 store.multi_replace = multi_replace;
10bea152 2710
0a5f5759
JK
2711 if (!config_filename)
2712 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2713
2714 /*
6cbf973c 2715 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2716 * contents of .git/config will be written into it.
2717 */
bfffb48c 2718 fd = hold_lock_file_for_update(&lock, config_filename, 0);
6cbf973c 2719 if (fd < 0) {
a769bfc7 2720 error_errno(_("could not lock config file %s"), config_filename);
7a397419 2721 ret = CONFIG_NO_LOCK;
dafc88b1 2722 goto out_free;
10bea152
JS
2723 }
2724
2725 /*
2726 * If .git/config does not exist yet, write a minimal version.
2727 */
88fb958b
AR
2728 in_fd = open(config_filename, O_RDONLY);
2729 if ( in_fd < 0 ) {
88fb958b 2730 if ( ENOENT != errno ) {
a769bfc7 2731 error_errno(_("opening %s"), config_filename);
7a397419 2732 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2733 goto out_free;
88fb958b 2734 }
10bea152
JS
2735 /* if nothing to unset, error out */
2736 if (value == NULL) {
7a397419 2737 ret = CONFIG_NOTHING_SET;
dafc88b1 2738 goto out_free;
10bea152
JS
2739 }
2740
e7347cb9
2741 free(store.key);
2742 store.key = xstrdup(key);
fee8572c
JS
2743 if (write_section(fd, key, &store) < 0 ||
2744 write_pair(fd, key, value, &store) < 0)
93c1e079
JH
2745 goto write_err_out;
2746 } else {
88fb958b 2747 struct stat st;
3a1b3126 2748 size_t copy_begin, copy_end;
dc49cd76 2749 int i, new_line = 0;
6ae996f2 2750 struct config_options opts;
10bea152
JS
2751
2752 if (value_regex == NULL)
2753 store.value_regex = NULL;
c1063be2
JK
2754 else if (value_regex == CONFIG_REGEX_NONE)
2755 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2756 else {
f98d863d
JS
2757 if (value_regex[0] == '!') {
2758 store.do_not_match = 1;
2759 value_regex++;
2760 } else
2761 store.do_not_match = 0;
2762
2d7320d0 2763 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2764 if (regcomp(store.value_regex, value_regex,
2765 REG_EXTENDED)) {
a769bfc7 2766 error(_("invalid pattern: %s"), value_regex);
3b82542d 2767 FREE_AND_NULL(store.value_regex);
7a397419 2768 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2769 goto out_free;
10bea152
JS
2770 }
2771 }
2772
6ae996f2
JS
2773 ALLOC_GROW(store.parsed, 1, store.parsed_alloc);
2774 store.parsed[0].end = 0;
2775
2776 memset(&opts, 0, sizeof(opts));
2777 opts.event_fn = store_aux_event;
2778 opts.event_fn_data = &store;
10bea152
JS
2779
2780 /*
6ae996f2
JS
2781 * After this, store.parsed will contain offsets of all the
2782 * parsed elements, and store.seen will contain a list of
2783 * matches, as indices into store.parsed.
2784 *
10bea152
JS
2785 * As a side effect, we make sure to transform only a valid
2786 * existing config file.
2787 */
6ae996f2
JS
2788 if (git_config_from_file_with_options(store_aux,
2789 config_filename,
2790 &store, &opts)) {
a769bfc7 2791 error(_("invalid config file %s"), config_filename);
7a397419 2792 ret = CONFIG_INVALID_FILE;
dafc88b1 2793 goto out_free;
10bea152
JS
2794 }
2795
4ddba79d 2796 /* if nothing to unset, or too many matches, error out */
668b9ade
JS
2797 if ((store.seen_nr == 0 && value == NULL) ||
2798 (store.seen_nr > 1 && multi_replace == 0)) {
7a397419 2799 ret = CONFIG_NOTHING_SET;
dafc88b1 2800 goto out_free;
10bea152
JS
2801 }
2802
29647d79
NTND
2803 if (fstat(in_fd, &st) == -1) {
2804 error_errno(_("fstat on %s failed"), config_filename);
2805 ret = CONFIG_INVALID_FILE;
2806 goto out_free;
2807 }
2808
dc49cd76 2809 contents_sz = xsize_t(st.st_size);
1570856b
JK
2810 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2811 MAP_PRIVATE, in_fd, 0);
2812 if (contents == MAP_FAILED) {
0e8771f1
JK
2813 if (errno == ENODEV && S_ISDIR(st.st_mode))
2814 errno = EISDIR;
a769bfc7 2815 error_errno(_("unable to mmap '%s'"), config_filename);
1570856b
JK
2816 ret = CONFIG_INVALID_FILE;
2817 contents = NULL;
2818 goto out_free;
2819 }
10bea152 2820 close(in_fd);
54d160ec 2821 in_fd = -1;
10bea152 2822
bfffb48c 2823 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
a769bfc7 2824 error_errno(_("chmod on %s failed"), get_lock_file_path(&lock));
daa22c6f
EW
2825 ret = CONFIG_NO_WRITE;
2826 goto out_free;
2827 }
2828
6ae996f2
JS
2829 if (store.seen_nr == 0) {
2830 if (!store.seen_alloc) {
2831 /* Did not see key nor section */
2832 ALLOC_GROW(store.seen, 1, store.seen_alloc);
2833 store.seen[0] = store.parsed_nr
2834 - !!store.parsed_nr;
2835 }
668b9ade 2836 store.seen_nr = 1;
6ae996f2 2837 }
4ddba79d 2838
668b9ade 2839 for (i = 0, copy_begin = 0; i < store.seen_nr; i++) {
6ae996f2
JS
2840 size_t replace_end;
2841 int j = store.seen[i];
2842
46fc89ce 2843 new_line = 0;
6ae996f2 2844 if (!store.key_seen) {
c71d8bb3
JS
2845 copy_end = store.parsed[j].end;
2846 /* include '\n' when copying section header */
2847 if (copy_end > 0 && copy_end < contents_sz &&
2848 contents[copy_end - 1] != '\n' &&
2849 contents[copy_end] == '\n')
2850 copy_end++;
2851 replace_end = copy_end;
6ae996f2
JS
2852 } else {
2853 replace_end = store.parsed[j].end;
2854 copy_end = store.parsed[j].begin;
22aedfcc 2855 if (!value)
a263ea84 2856 maybe_remove_section(&store,
22aedfcc
JS
2857 &copy_end,
2858 &replace_end, &i);
6ae996f2
JS
2859 /*
2860 * Swallow preceding white-space on the same
2861 * line.
2862 */
2863 while (copy_end > 0 ) {
2864 char c = contents[copy_end - 1];
2865
2866 if (isspace(c) && c != '\n')
2867 copy_end--;
2868 else
2869 break;
2870 }
2871 }
4ddba79d 2872
02e5ba4a
JK
2873 if (copy_end > 0 && contents[copy_end-1] != '\n')
2874 new_line = 1;
2875
4ddba79d
JS
2876 /* write the first part of the config */
2877 if (copy_end > copy_begin) {
93c1e079 2878 if (write_in_full(fd, contents + copy_begin,
efacf609 2879 copy_end - copy_begin) < 0)
93c1e079
JH
2880 goto write_err_out;
2881 if (new_line &&
06f46f23 2882 write_str_in_full(fd, "\n") < 0)
93c1e079 2883 goto write_err_out;
4ddba79d 2884 }
6ae996f2 2885 copy_begin = replace_end;
10bea152
JS
2886 }
2887
10bea152
JS
2888 /* write the pair (value == NULL means unset) */
2889 if (value != NULL) {
5221c315 2890 if (!store.section_seen) {
fee8572c 2891 if (write_section(fd, key, &store) < 0)
93c1e079 2892 goto write_err_out;
480c9e52 2893 }
fee8572c 2894 if (write_pair(fd, key, value, &store) < 0)
93c1e079 2895 goto write_err_out;
10bea152
JS
2896 }
2897
2898 /* write the rest of the config */
dc49cd76 2899 if (copy_begin < contents_sz)
93c1e079 2900 if (write_in_full(fd, contents + copy_begin,
efacf609 2901 contents_sz - copy_begin) < 0)
93c1e079 2902 goto write_err_out;
7a64592c
KB
2903
2904 munmap(contents, contents_sz);
2905 contents = NULL;
10bea152
JS
2906 }
2907
bfffb48c 2908 if (commit_lock_file(&lock) < 0) {
a769bfc7 2909 error_errno(_("could not write config file %s"), config_filename);
7a397419 2910 ret = CONFIG_NO_WRITE;
dafc88b1 2911 goto out_free;
10bea152
JS
2912 }
2913
dafc88b1
SH
2914 ret = 0;
2915
3c8687a7
TA
2916 /* Invalidate the config cache */
2917 git_config_clear();
2918
dafc88b1 2919out_free:
bfffb48c 2920 rollback_lock_file(&lock);
0a5f5759 2921 free(filename_buf);
3a1b3126
JK
2922 if (contents)
2923 munmap(contents, contents_sz);
54d160ec
SS
2924 if (in_fd >= 0)
2925 close(in_fd);
2a00e594 2926 config_store_data_clear(&store);
dafc88b1 2927 return ret;
93c1e079
JH
2928
2929write_err_out:
bfffb48c 2930 ret = write_error(get_lock_file_path(&lock));
93c1e079
JH
2931 goto out_free;
2932
10bea152
JS
2933}
2934
3d180648
PS
2935void git_config_set_multivar_in_file(const char *config_filename,
2936 const char *key, const char *value,
2937 const char *value_regex, int multi_replace)
b4c8aba6 2938{
1cae428e
JK
2939 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2940 value_regex, multi_replace))
2941 return;
2942 if (value)
8c3ca351 2943 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2944 else
2945 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2946}
2947
30598ad0
PS
2948int git_config_set_multivar_gently(const char *key, const char *value,
2949 const char *value_regex, int multi_replace)
5ec31182 2950{
30598ad0
PS
2951 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2952 multi_replace);
5ec31182
RR
2953}
2954
3d180648
PS
2955void git_config_set_multivar(const char *key, const char *value,
2956 const char *value_regex, int multi_replace)
5ec31182 2957{
3d180648
PS
2958 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2959 multi_replace);
5ec31182
RR
2960}
2961
118f8b24
PB
2962static int section_name_match (const char *buf, const char *name)
2963{
2964 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2965 if (buf[i] != '[')
2966 return 0;
2967 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2968 if (!dot && isspace(buf[i])) {
2969 dot = 1;
2970 if (name[j++] != '.')
2971 break;
2972 for (i++; isspace(buf[i]); i++)
2973 ; /* do nothing */
2974 if (buf[i] != '"')
2975 break;
2976 continue;
2977 }
2978 if (buf[i] == '\\' && dot)
2979 i++;
2980 else if (buf[i] == '"' && dot) {
2981 for (i++; isspace(buf[i]); i++)
2982 ; /* do_nothing */
2983 break;
2984 }
2985 if (buf[i] != name[j++])
2986 break;
2987 }
a4c0d463
AV
2988 if (buf[i] == ']' && name[j] == 0) {
2989 /*
2990 * We match, now just find the right length offset by
2991 * gobbling up any whitespace after it, as well
2992 */
2993 i++;
2994 for (; buf[i] && isspace(buf[i]); i++)
2995 ; /* do nothing */
2996 return i;
2997 }
2998 return 0;
118f8b24
PB
2999}
3000
94a35b1a
JK
3001static int section_name_is_ok(const char *name)
3002{
3003 /* Empty section names are bogus. */
3004 if (!*name)
3005 return 0;
3006
3007 /*
3008 * Before a dot, we must be alphanumeric or dash. After the first dot,
3009 * anything goes, so we can stop checking.
3010 */
3011 for (; *name && *name != '.'; name++)
3012 if (*name != '-' && !isalnum(*name))
3013 return 0;
3014 return 1;
3015}
3016
118f8b24 3017/* if new_name == NULL, the section is removed instead */
52d59cc6 3018static int git_config_copy_or_rename_section_in_file(const char *config_filename,
fee8572c
JS
3019 const char *old_name,
3020 const char *new_name, int copy)
0667fcfb 3021{
118f8b24 3022 int ret = 0, remove = 0;
42bd39b5 3023 char *filename_buf = NULL;
837e34eb 3024 struct lock_file lock = LOCK_INIT;
0667fcfb
JS
3025 int out_fd;
3026 char buf[1024];
4db7dbdb 3027 FILE *config_file = NULL;
daa22c6f 3028 struct stat st;
52d59cc6 3029 struct strbuf copystr = STRBUF_INIT;
fee8572c
JS
3030 struct config_store_data store;
3031
3032 memset(&store, 0, sizeof(store));
0667fcfb 3033
94a35b1a 3034 if (new_name && !section_name_is_ok(new_name)) {
a769bfc7 3035 ret = error(_("invalid section name: %s"), new_name);
c06fa62d 3036 goto out_no_rollback;
94a35b1a
JK
3037 }
3038
42bd39b5
JK
3039 if (!config_filename)
3040 config_filename = filename_buf = git_pathdup("config");
3041
837e34eb 3042 out_fd = hold_lock_file_for_update(&lock, config_filename, 0);
fc1905bb 3043 if (out_fd < 0) {
a769bfc7 3044 ret = error(_("could not lock config file %s"), config_filename);
fc1905bb
JH
3045 goto out;
3046 }
0667fcfb 3047
fc1905bb 3048 if (!(config_file = fopen(config_filename, "rb"))) {
11dc1fcb
NTND
3049 ret = warn_on_fopen_errors(config_filename);
3050 if (ret)
3051 goto out;
01ebb9dc 3052 /* no config file means nothing to rename, no error */
6e45b43f 3053 goto commit_and_out;
fc1905bb 3054 }
0667fcfb 3055
29647d79
NTND
3056 if (fstat(fileno(config_file), &st) == -1) {
3057 ret = error_errno(_("fstat on %s failed"), config_filename);
3058 goto out;
3059 }
daa22c6f 3060
837e34eb 3061 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
a769bfc7 3062 ret = error_errno(_("chmod on %s failed"),
837e34eb 3063 get_lock_file_path(&lock));
daa22c6f
EW
3064 goto out;
3065 }
3066
0667fcfb
JS
3067 while (fgets(buf, sizeof(buf), config_file)) {
3068 int i;
480c9e52 3069 int length;
52d59cc6 3070 int is_section = 0;
9a5abfc7 3071 char *output = buf;
0667fcfb
JS
3072 for (i = 0; buf[i] && isspace(buf[i]); i++)
3073 ; /* do nothing */
3074 if (buf[i] == '[') {
3075 /* it's a section */
52d59cc6
SD
3076 int offset;
3077 is_section = 1;
3078
3079 /*
3080 * When encountering a new section under -c we
3081 * need to flush out any section we're already
3082 * coping and begin anew. There might be
3083 * multiple [branch "$name"] sections.
3084 */
3085 if (copystr.len > 0) {
c5e3bc6e 3086 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
0b646bca 3087 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3088 goto out;
3089 }
3090 strbuf_reset(&copystr);
3091 }
3092
3093 offset = section_name_match(&buf[i], old_name);
a4c0d463 3094 if (offset > 0) {
118f8b24
PB
3095 ret++;
3096 if (new_name == NULL) {
3097 remove = 1;
0667fcfb
JS
3098 continue;
3099 }
0667fcfb 3100 store.baselen = strlen(new_name);
52d59cc6 3101 if (!copy) {
fee8572c 3102 if (write_section(out_fd, new_name, &store) < 0) {
0b646bca 3103 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3104 goto out;
3105 }
9a5abfc7 3106 /*
52d59cc6
SD
3107 * We wrote out the new section, with
3108 * a newline, now skip the old
3109 * section's length
9a5abfc7 3110 */
52d59cc6
SD
3111 output += offset + i;
3112 if (strlen(output) > 0) {
3113 /*
3114 * More content means there's
3115 * a declaration to put on the
3116 * next line; indent with a
3117 * tab
3118 */
3119 output -= 1;
3120 output[0] = '\t';
3121 }
3122 } else {
fee8572c 3123 copystr = store_create_section(new_name, &store);
9a5abfc7 3124 }
0667fcfb 3125 }
118f8b24 3126 remove = 0;
0667fcfb 3127 }
118f8b24
PB
3128 if (remove)
3129 continue;
9a5abfc7 3130 length = strlen(output);
52d59cc6
SD
3131
3132 if (!is_section && copystr.len > 0) {
3133 strbuf_add(&copystr, output, length);
3134 }
3135
06f46f23 3136 if (write_in_full(out_fd, output, length) < 0) {
837e34eb 3137 ret = write_error(get_lock_file_path(&lock));
480c9e52
AW
3138 goto out;
3139 }
0667fcfb 3140 }
52d59cc6
SD
3141
3142 /*
3143 * Copy a trailing section at the end of the config, won't be
3144 * flushed by the usual "flush because we have a new section
3145 * logic in the loop above.
3146 */
3147 if (copystr.len > 0) {
c5e3bc6e 3148 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
0b646bca 3149 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3150 goto out;
3151 }
3152 strbuf_reset(&copystr);
3153 }
3154
fc1905bb 3155 fclose(config_file);
4db7dbdb 3156 config_file = NULL;
6e45b43f 3157commit_and_out:
837e34eb 3158 if (commit_lock_file(&lock) < 0)
a769bfc7 3159 ret = error_errno(_("could not write config file %s"),
f0658ec9 3160 config_filename);
8b590075 3161out:
4db7dbdb
JS
3162 if (config_file)
3163 fclose(config_file);
837e34eb 3164 rollback_lock_file(&lock);
c06fa62d 3165out_no_rollback:
42bd39b5 3166 free(filename_buf);
2a00e594 3167 config_store_data_clear(&store);
0667fcfb
JS
3168 return ret;
3169}
40ea4ed9 3170
52d59cc6
SD
3171int git_config_rename_section_in_file(const char *config_filename,
3172 const char *old_name, const char *new_name)
3173{
3174 return git_config_copy_or_rename_section_in_file(config_filename,
3175 old_name, new_name, 0);
3176}
3177
42bd39b5
JK
3178int git_config_rename_section(const char *old_name, const char *new_name)
3179{
4a7bb5ba 3180 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
3181}
3182
52d59cc6
SD
3183int git_config_copy_section_in_file(const char *config_filename,
3184 const char *old_name, const char *new_name)
3185{
3186 return git_config_copy_or_rename_section_in_file(config_filename,
3187 old_name, new_name, 1);
3188}
3189
3190int git_config_copy_section(const char *old_name, const char *new_name)
3191{
3192 return git_config_copy_section_in_file(NULL, old_name, new_name);
3193}
3194
40ea4ed9
JH
3195/*
3196 * Call this to report error for your variable that should not
3197 * get a boolean value (i.e. "[my] var" means "true").
3198 */
a469a101 3199#undef config_error_nonbool
40ea4ed9
JH
3200int config_error_nonbool(const char *var)
3201{
a769bfc7 3202 return error(_("missing value for '%s'"), var);
40ea4ed9 3203}
1b86bbb0
JK
3204
3205int parse_config_key(const char *var,
3206 const char *section,
3207 const char **subsection, int *subsection_len,
3208 const char **key)
3209{
1b86bbb0
JK
3210 const char *dot;
3211
3212 /* Does it start with "section." ? */
e3394fdc 3213 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
3214 return -1;
3215
3216 /*
3217 * Find the key; we don't know yet if we have a subsection, but we must
3218 * parse backwards from the end, since the subsection may have dots in
3219 * it, too.
3220 */
3221 dot = strrchr(var, '.');
3222 *key = dot + 1;
3223
3224 /* Did we have a subsection at all? */
e3394fdc 3225 if (dot == var) {
48f8d9f7
JK
3226 if (subsection) {
3227 *subsection = NULL;
3228 *subsection_len = 0;
3229 }
1b86bbb0
JK
3230 }
3231 else {
48f8d9f7
JK
3232 if (!subsection)
3233 return -1;
e3394fdc 3234 *subsection = var + 1;
1b86bbb0
JK
3235 *subsection_len = dot - *subsection;
3236 }
3237
3238 return 0;
3239}
473166b9
LS
3240
3241const char *current_config_origin_type(void)
3242{
1b8132d9 3243 int type;
0d44a2da
JK
3244 if (current_config_kvi)
3245 type = current_config_kvi->origin_type;
3246 else if(cf)
3247 type = cf->origin_type;
3248 else
033abf97 3249 BUG("current_config_origin_type called outside config callback");
1b8132d9
VA
3250
3251 switch (type) {
3252 case CONFIG_ORIGIN_BLOB:
3253 return "blob";
3254 case CONFIG_ORIGIN_FILE:
3255 return "file";
3256 case CONFIG_ORIGIN_STDIN:
3257 return "standard input";
3258 case CONFIG_ORIGIN_SUBMODULE_BLOB:
3259 return "submodule-blob";
3260 case CONFIG_ORIGIN_CMDLINE:
3261 return "command line";
3262 default:
033abf97 3263 BUG("unknown config origin type");
1b8132d9 3264 }
473166b9
LS
3265}
3266
3267const char *current_config_name(void)
3268{
0d44a2da
JK
3269 const char *name;
3270 if (current_config_kvi)
3271 name = current_config_kvi->filename;
3272 else if (cf)
3273 name = cf->name;
3274 else
033abf97 3275 BUG("current_config_name called outside config callback");
0d44a2da 3276 return name ? name : "";
473166b9 3277}
9acc5911
JK
3278
3279enum config_scope current_config_scope(void)
3280{
3281 if (current_config_kvi)
3282 return current_config_kvi->scope;
3283 else
3284 return current_parsing_scope;
473166b9 3285}
a73b3680
NTND
3286
3287int lookup_config(const char **mapping, int nr_mapping, const char *var)
3288{
3289 int i;
3290
3291 for (i = 0; i < nr_mapping; i++) {
3292 const char *name = mapping[i];
3293
3294 if (name && !strcasecmp(var, name))
3295 return i;
3296 }
3297 return -1;
3298}