git config --unset: remove empty sections (in the common case)
[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"
b2141fc1 9#include "config.h"
3b256228 10#include "repository.h"
697cc8ef 11#include "lockfile.h"
7f0e39fa 12#include "exec_cmd.h"
572e4f6a 13#include "strbuf.h"
2b64fc89 14#include "quote.h"
3c8687a7
TA
15#include "hashmap.h"
16#include "string-list.h"
599446dc 17#include "utf8.h"
3efd0bed 18#include "dir.h"
17712991 19
4d8dd149
HV
20struct config_source {
21 struct config_source *prev;
22 union {
23 FILE *file;
1bc88819
HV
24 struct config_buf {
25 const char *buf;
26 size_t len;
27 size_t pos;
28 } buf;
4d8dd149 29 } u;
1b8132d9 30 enum config_origin_type origin_type;
924aaf3e 31 const char *name;
d14d4244 32 const char *path;
b2dc0945 33 int die_on_error;
924aaf3e
RJ
34 int linenr;
35 int eof;
36 struct strbuf value;
0971e992 37 struct strbuf var;
924aaf3e 38
49d6cfa5
JK
39 int (*do_fgetc)(struct config_source *c);
40 int (*do_ungetc)(int c, struct config_source *conf);
41 long (*do_ftell)(struct config_source *c);
4d8dd149
HV
42};
43
0d44a2da
JK
44/*
45 * These variables record the "current" config source, which
46 * can be accessed by parsing callbacks.
47 *
48 * The "cf" variable will be non-NULL only when we are actually parsing a real
49 * config source (file, blob, cmdline, etc).
50 *
51 * The "current_config_kvi" variable will be non-NULL only when we are feeding
52 * cached config from a configset into a callback.
53 *
54 * They should generally never be non-NULL at the same time. If they are both
55 * NULL, then we aren't parsing anything (and depending on the function looking
56 * at the variables, it's either a bug for it to be called in the first place,
57 * or it's a function which can be reused for non-config purposes, and should
58 * fall back to some sane behavior).
59 */
4d8dd149 60static struct config_source *cf;
0d44a2da 61static struct key_value_info *current_config_kvi;
924aaf3e 62
9acc5911
JK
63/*
64 * Similar to the variables above, this gives access to the "scope" of the
65 * current value (repo, global, etc). For cached values, it can be found via
66 * the current_config_kvi as above. During parsing, the current value can be
67 * found in this variable. It's not part of "cf" because it transcends a single
68 * file (i.e., a file included from .git/config is still in "repo" scope).
69 */
70static enum config_scope current_parsing_scope;
924aaf3e 71
8de7eeb5
JH
72static int core_compression_seen;
73static int pack_compression_seen;
960ccca6
DH
74static int zlib_compression_seen;
75
4d8dd149
HV
76static int config_file_fgetc(struct config_source *conf)
77{
260d408e 78 return getc_unlocked(conf->u.file);
4d8dd149
HV
79}
80
81static int config_file_ungetc(int c, struct config_source *conf)
82{
83 return ungetc(c, conf->u.file);
84}
85
86static long config_file_ftell(struct config_source *conf)
87{
88 return ftell(conf->u.file);
89}
90
1bc88819
HV
91
92static int config_buf_fgetc(struct config_source *conf)
93{
94 if (conf->u.buf.pos < conf->u.buf.len)
95 return conf->u.buf.buf[conf->u.buf.pos++];
96
97 return EOF;
98}
99
100static int config_buf_ungetc(int c, struct config_source *conf)
101{
1d0655c1
JK
102 if (conf->u.buf.pos > 0) {
103 conf->u.buf.pos--;
104 if (conf->u.buf.buf[conf->u.buf.pos] != c)
105 die("BUG: config_buf can only ungetc the same character");
106 return c;
107 }
1bc88819
HV
108
109 return EOF;
110}
111
112static long config_buf_ftell(struct config_source *conf)
113{
114 return conf->u.buf.pos;
115}
116
9b25a0b5
JK
117#define MAX_INCLUDE_DEPTH 10
118static const char include_depth_advice[] =
119"exceeded maximum include depth (%d) while including\n"
120" %s\n"
121"from\n"
122" %s\n"
123"Do you have circular includes?";
124static int handle_path_include(const char *path, struct config_include_data *inc)
125{
126 int ret = 0;
127 struct strbuf buf = STRBUF_INIT;
67beb600 128 char *expanded;
4c0a89fc 129
67beb600
JK
130 if (!path)
131 return config_error_nonbool("include.path");
132
4aad2f16 133 expanded = expand_user_path(path, 0);
4c0a89fc 134 if (!expanded)
8c3ca351 135 return error("could not expand include path '%s'", path);
4c0a89fc 136 path = expanded;
9b25a0b5
JK
137
138 /*
139 * Use an absolute path as-is, but interpret relative paths
140 * based on the including config file.
141 */
142 if (!is_absolute_path(path)) {
143 char *slash;
144
d14d4244 145 if (!cf || !cf->path)
9b25a0b5
JK
146 return error("relative config includes must come from files");
147
d14d4244 148 slash = find_last_dir_sep(cf->path);
9b25a0b5 149 if (slash)
d14d4244 150 strbuf_add(&buf, cf->path, slash - cf->path + 1);
9b25a0b5
JK
151 strbuf_addstr(&buf, path);
152 path = buf.buf;
153 }
154
4698c8fe 155 if (!access_or_die(path, R_OK, 0)) {
9b25a0b5
JK
156 if (++inc->depth > MAX_INCLUDE_DEPTH)
157 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
3258258f
JK
158 !cf ? "<unknown>" :
159 cf->name ? cf->name :
160 "the command line");
9b25a0b5
JK
161 ret = git_config_from_file(git_config_include, path, inc);
162 inc->depth--;
163 }
164 strbuf_release(&buf);
4c0a89fc 165 free(expanded);
9b25a0b5
JK
166 return ret;
167}
168
3efd0bed
NTND
169static int prepare_include_condition_pattern(struct strbuf *pat)
170{
171 struct strbuf path = STRBUF_INIT;
172 char *expanded;
173 int prefix = 0;
174
86f95157 175 expanded = expand_user_path(pat->buf, 1);
3efd0bed
NTND
176 if (expanded) {
177 strbuf_reset(pat);
178 strbuf_addstr(pat, expanded);
179 free(expanded);
180 }
181
182 if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
183 const char *slash;
184
185 if (!cf || !cf->path)
186 return error(_("relative config include "
187 "conditionals must come from files"));
188
86f95157 189 strbuf_realpath(&path, cf->path, 1);
3efd0bed
NTND
190 slash = find_last_dir_sep(path.buf);
191 if (!slash)
192 die("BUG: how is this possible?");
193 strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
194 prefix = slash - path.buf + 1 /* slash */;
195 } else if (!is_absolute_path(pat->buf))
196 strbuf_insert(pat, 0, "**/", 3);
197
198 if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
199 strbuf_addstr(pat, "**");
200
201 strbuf_release(&path);
202 return prefix;
203}
204
2185fde5
NTND
205static int include_by_gitdir(const struct config_options *opts,
206 const char *cond, size_t cond_len, int icase)
3efd0bed
NTND
207{
208 struct strbuf text = STRBUF_INIT;
209 struct strbuf pattern = STRBUF_INIT;
210 int ret = 0, prefix;
2185fde5 211 const char *git_dir;
0624c63c 212 int already_tried_absolute = 0;
3efd0bed 213
2185fde5
NTND
214 if (opts->git_dir)
215 git_dir = opts->git_dir;
2185fde5
NTND
216 else
217 goto done;
218
c9672ba4 219 strbuf_realpath(&text, git_dir, 1);
3efd0bed
NTND
220 strbuf_add(&pattern, cond, cond_len);
221 prefix = prepare_include_condition_pattern(&pattern);
222
0624c63c 223again:
3efd0bed
NTND
224 if (prefix < 0)
225 goto done;
226
227 if (prefix > 0) {
228 /*
229 * perform literal matching on the prefix part so that
230 * any wildcard character in it can't create side effects.
231 */
232 if (text.len < prefix)
233 goto done;
234 if (!icase && strncmp(pattern.buf, text.buf, prefix))
235 goto done;
236 if (icase && strncasecmp(pattern.buf, text.buf, prefix))
237 goto done;
238 }
239
240 ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
55d34269 241 icase ? WM_CASEFOLD : 0);
3efd0bed 242
0624c63c
ÆAB
243 if (!ret && !already_tried_absolute) {
244 /*
245 * We've tried e.g. matching gitdir:~/work, but if
246 * ~/work is a symlink to /mnt/storage/work
247 * strbuf_realpath() will expand it, so the rule won't
248 * match. Let's match against a
249 * strbuf_add_absolute_path() version of the path,
250 * which'll do the right thing
251 */
252 strbuf_reset(&text);
253 strbuf_add_absolute_path(&text, git_dir);
254 already_tried_absolute = 1;
255 goto again;
256 }
3efd0bed
NTND
257done:
258 strbuf_release(&pattern);
259 strbuf_release(&text);
260 return ret;
261}
262
2185fde5
NTND
263static int include_condition_is_true(const struct config_options *opts,
264 const char *cond, size_t cond_len)
3efd0bed
NTND
265{
266
267 if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
2185fde5 268 return include_by_gitdir(opts, cond, cond_len, 0);
3efd0bed 269 else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
2185fde5 270 return include_by_gitdir(opts, cond, cond_len, 1);
3efd0bed
NTND
271
272 /* unknown conditionals are always false */
273 return 0;
274}
275
9b25a0b5
JK
276int git_config_include(const char *var, const char *value, void *data)
277{
278 struct config_include_data *inc = data;
3efd0bed
NTND
279 const char *cond, *key;
280 int cond_len;
9b25a0b5
JK
281 int ret;
282
283 /*
284 * Pass along all values, including "include" directives; this makes it
285 * possible to query information on the includes themselves.
286 */
287 ret = inc->fn(var, value, inc->data);
288 if (ret < 0)
289 return ret;
290
37007c3a 291 if (!strcmp(var, "include.path"))
9b25a0b5 292 ret = handle_path_include(value, inc);
3efd0bed
NTND
293
294 if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
2185fde5 295 (cond && include_condition_is_true(inc->opts, cond, cond_len)) &&
3efd0bed
NTND
296 !strcmp(key, "path"))
297 ret = handle_path_include(value, inc);
298
9b25a0b5
JK
299 return ret;
300}
301
2b64fc89
JK
302void git_config_push_parameter(const char *text)
303{
304 struct strbuf env = STRBUF_INIT;
305 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
d1f88498 306 if (old && *old) {
2b64fc89
JK
307 strbuf_addstr(&env, old);
308 strbuf_addch(&env, ' ');
309 }
310 sq_quote_buf(&env, text);
311 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
312 strbuf_release(&env);
313}
314
ee98df3f
JH
315static inline int iskeychar(int c)
316{
317 return isalnum(c) || c == '-';
318}
319
320/*
321 * Auxiliary function to sanity-check and split the key into the section
322 * identifier and variable name.
323 *
324 * Returns 0 on success, -1 when there is an invalid character in the key and
325 * -2 if there is no section name in the key.
326 *
327 * store_key - pointer to char* which will hold a copy of the key with
328 * lowercase section and variable name
329 * baselen - pointer to int which will hold the length of the
330 * section + subsection part, can be NULL
331 */
332static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
333{
334 int i, dot, baselen;
335 const char *last_dot = strrchr(key, '.');
336
337 /*
338 * Since "key" actually contains the section name and the real
339 * key name separated by a dot, we have to know where the dot is.
340 */
341
342 if (last_dot == NULL || last_dot == key) {
343 if (!quiet)
344 error("key does not contain a section: %s", key);
345 return -CONFIG_NO_SECTION_OR_NAME;
346 }
347
348 if (!last_dot[1]) {
349 if (!quiet)
350 error("key does not contain variable name: %s", key);
351 return -CONFIG_NO_SECTION_OR_NAME;
352 }
353
354 baselen = last_dot - key;
355 if (baselen_)
356 *baselen_ = baselen;
357
358 /*
359 * Validate the key and while at it, lower case it for matching.
360 */
361 if (store_key)
362 *store_key = xmallocz(strlen(key));
363
364 dot = 0;
365 for (i = 0; key[i]; i++) {
366 unsigned char c = key[i];
367 if (c == '.')
368 dot = 1;
369 /* Leave the extended basename untouched.. */
370 if (!dot || i > baselen) {
371 if (!iskeychar(c) ||
372 (i == baselen + 1 && !isalpha(c))) {
373 if (!quiet)
374 error("invalid key: %s", key);
375 goto out_free_ret_1;
376 }
377 c = tolower(c);
378 } else if (c == '\n') {
379 if (!quiet)
380 error("invalid key (newline): %s", key);
381 goto out_free_ret_1;
382 }
383 if (store_key)
384 (*store_key)[i] = c;
385 }
386
387 return 0;
388
389out_free_ret_1:
390 if (store_key) {
6a83d902 391 FREE_AND_NULL(*store_key);
ee98df3f
JH
392 }
393 return -CONFIG_INVALID_KEY;
394}
395
396int git_config_parse_key(const char *key, char **store_key, int *baselen)
397{
398 return git_config_parse_key_1(key, store_key, baselen, 0);
399}
400
401int git_config_key_is_valid(const char *key)
402{
403 return !git_config_parse_key_1(key, NULL, NULL, 1);
404}
405
2496844b
JK
406int git_config_parse_parameter(const char *text,
407 config_fn_t fn, void *data)
8b1fa778 408{
a789ca70 409 const char *value;
1274a155 410 char *canonical_name;
572e4f6a 411 struct strbuf **pair;
1274a155 412 int ret;
a789ca70 413
f77bccae 414 pair = strbuf_split_str(text, '=', 2);
c5d6350b
JK
415 if (!pair[0])
416 return error("bogus config parameter: %s", text);
a789ca70
JH
417
418 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
572e4f6a 419 strbuf_setlen(pair[0], pair[0]->len - 1);
a789ca70
JH
420 value = pair[1] ? pair[1]->buf : "";
421 } else {
422 value = NULL;
423 }
424
572e4f6a
AR
425 strbuf_trim(pair[0]);
426 if (!pair[0]->len) {
427 strbuf_list_free(pair);
06eb708f 428 return error("bogus config parameter: %s", text);
8b1fa778 429 }
1274a155
JH
430
431 if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
432 ret = -1;
433 } else {
434 ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
435 free(canonical_name);
572e4f6a
AR
436 }
437 strbuf_list_free(pair);
1274a155 438 return ret;
8b1fa778
AR
439}
440
06eb708f
JK
441int git_config_from_parameters(config_fn_t fn, void *data)
442{
2b64fc89 443 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
a77d6db6 444 int ret = 0;
2b64fc89
JK
445 char *envw;
446 const char **argv = NULL;
447 int nr = 0, alloc = 0;
448 int i;
3258258f 449 struct config_source source;
2b64fc89
JK
450
451 if (!env)
452 return 0;
3258258f
JK
453
454 memset(&source, 0, sizeof(source));
455 source.prev = cf;
1b8132d9 456 source.origin_type = CONFIG_ORIGIN_CMDLINE;
3258258f
JK
457 cf = &source;
458
2b64fc89
JK
459 /* sq_dequote will write over it */
460 envw = xstrdup(env);
461
462 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
a77d6db6
JK
463 ret = error("bogus format in " CONFIG_DATA_ENVIRONMENT);
464 goto out;
2b64fc89
JK
465 }
466
467 for (i = 0; i < nr; i++) {
06eb708f 468 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
a77d6db6
JK
469 ret = -1;
470 goto out;
2b64fc89
JK
471 }
472 }
473
a77d6db6 474out:
2b64fc89
JK
475 free(argv);
476 free(envw);
3258258f 477 cf = source.prev;
a77d6db6 478 return ret;
2b64fc89
JK
479}
480
17712991
LT
481static int get_next_char(void)
482{
49d6cfa5 483 int c = cf->do_fgetc(cf);
17712991 484
dbb9a812
HV
485 if (c == '\r') {
486 /* DOS like systems */
49d6cfa5 487 c = cf->do_fgetc(cf);
dbb9a812 488 if (c != '\n') {
5e0be134
JK
489 if (c != EOF)
490 cf->do_ungetc(c, cf);
dbb9a812 491 c = '\r';
17712991
LT
492 }
493 }
dbb9a812
HV
494 if (c == '\n')
495 cf->linenr++;
496 if (c == EOF) {
497 cf->eof = 1;
b3b3f60b 498 cf->linenr++;
dbb9a812
HV
499 c = '\n';
500 }
17712991
LT
501 return c;
502}
503
504static char *parse_value(void)
505{
e96c19c5 506 int quote = 0, comment = 0, space = 0;
17712991 507
924aaf3e 508 strbuf_reset(&cf->value);
17712991
LT
509 for (;;) {
510 int c = get_next_char();
17712991 511 if (c == '\n') {
4b340593
MS
512 if (quote) {
513 cf->linenr--;
17712991 514 return NULL;
4b340593 515 }
924aaf3e 516 return cf->value.buf;
17712991
LT
517 }
518 if (comment)
519 continue;
520 if (isspace(c) && !quote) {
924aaf3e 521 if (cf->value.len)
ebdaae37 522 space++;
17712991
LT
523 continue;
524 }
7ebdba61
JS
525 if (!quote) {
526 if (c == ';' || c == '#') {
527 comment = 1;
528 continue;
529 }
530 }
ebdaae37 531 for (; space; space--)
924aaf3e 532 strbuf_addch(&cf->value, ' ');
17712991
LT
533 if (c == '\\') {
534 c = get_next_char();
535 switch (c) {
536 case '\n':
537 continue;
538 case 't':
539 c = '\t';
540 break;
541 case 'b':
542 c = '\b';
543 break;
544 case 'n':
545 c = '\n';
546 break;
5cbb401d
LT
547 /* Some characters escape as themselves */
548 case '\\': case '"':
549 break;
550 /* Reject unknown escape sequences */
551 default:
552 return NULL;
17712991 553 }
924aaf3e 554 strbuf_addch(&cf->value, c);
17712991
LT
555 continue;
556 }
557 if (c == '"') {
558 quote = 1-quote;
559 continue;
560 }
924aaf3e 561 strbuf_addch(&cf->value, c);
17712991
LT
562 }
563}
564
0971e992 565static int get_value(config_fn_t fn, void *data, struct strbuf *name)
17712991
LT
566{
567 int c;
568 char *value;
b3b3f60b 569 int ret;
17712991
LT
570
571 /* Get the full name */
572 for (;;) {
573 c = get_next_char();
924aaf3e 574 if (cf->eof)
17712991 575 break;
38c5afa8 576 if (!iskeychar(c))
17712991 577 break;
0971e992 578 strbuf_addch(name, tolower(c));
17712991 579 }
0971e992 580
17712991
LT
581 while (c == ' ' || c == '\t')
582 c = get_next_char();
583
584 value = NULL;
585 if (c != '\n') {
586 if (c != '=')
587 return -1;
588 value = parse_value();
589 if (!value)
590 return -1;
591 }
b3b3f60b
MM
592 /*
593 * We already consumed the \n, but we need linenr to point to
594 * the line we just parsed during the call to fn to get
595 * accurate line number in error messages.
596 */
597 cf->linenr--;
598 ret = fn(name->buf, value, data);
e2e14251
JS
599 if (ret >= 0)
600 cf->linenr++;
b3b3f60b 601 return ret;
17712991
LT
602}
603
0971e992 604static int get_extended_base_var(struct strbuf *name, int c)
d14f7764
LT
605{
606 do {
607 if (c == '\n')
4b340593 608 goto error_incomplete_line;
d14f7764
LT
609 c = get_next_char();
610 } while (isspace(c));
611
612 /* We require the format to be '[base "extension"]' */
613 if (c != '"')
614 return -1;
0971e992 615 strbuf_addch(name, '.');
d14f7764
LT
616
617 for (;;) {
618 int c = get_next_char();
619 if (c == '\n')
4b340593 620 goto error_incomplete_line;
d14f7764
LT
621 if (c == '"')
622 break;
623 if (c == '\\') {
624 c = get_next_char();
625 if (c == '\n')
4b340593 626 goto error_incomplete_line;
d14f7764 627 }
0971e992 628 strbuf_addch(name, c);
d14f7764
LT
629 }
630
631 /* Final ']' */
632 if (get_next_char() != ']')
633 return -1;
0971e992 634 return 0;
4b340593
MS
635error_incomplete_line:
636 cf->linenr--;
637 return -1;
d14f7764
LT
638}
639
0971e992 640static int get_base_var(struct strbuf *name)
17712991 641{
17712991
LT
642 for (;;) {
643 int c = get_next_char();
924aaf3e 644 if (cf->eof)
17712991
LT
645 return -1;
646 if (c == ']')
0971e992 647 return 0;
d14f7764 648 if (isspace(c))
0971e992 649 return get_extended_base_var(name, c);
38c5afa8 650 if (!iskeychar(c) && c != '.')
17712991 651 return -1;
0971e992 652 strbuf_addch(name, tolower(c));
17712991
LT
653 }
654}
655
8032cc44
JS
656struct parse_event_data {
657 enum config_event_t previous_type;
658 size_t previous_offset;
659 const struct config_options *opts;
660};
661
662static int do_event(enum config_event_t type, struct parse_event_data *data)
663{
664 size_t offset;
665
666 if (!data->opts || !data->opts->event_fn)
667 return 0;
668
669 if (type == CONFIG_EVENT_WHITESPACE &&
670 data->previous_type == type)
671 return 0;
672
673 offset = cf->do_ftell(cf);
674 /*
675 * At EOF, the parser always "inserts" an extra '\n', therefore
676 * the end offset of the event is the current file position, otherwise
677 * we will already have advanced to the next event.
678 */
679 if (type != CONFIG_EVENT_EOF)
680 offset--;
681
682 if (data->previous_type != CONFIG_EVENT_EOF &&
683 data->opts->event_fn(data->previous_type, data->previous_offset,
684 offset, data->opts->event_fn_data) < 0)
685 return -1;
686
687 data->previous_type = type;
688 data->previous_offset = offset;
689
690 return 0;
691}
692
693static int git_parse_source(config_fn_t fn, void *data,
694 const struct config_options *opts)
17712991
LT
695{
696 int comment = 0;
697 int baselen = 0;
0971e992 698 struct strbuf *var = &cf->var;
1b8132d9
VA
699 int error_return = 0;
700 char *error_msg = NULL;
17712991 701
de056402 702 /* U+FEFF Byte Order Mark in UTF8 */
599446dc 703 const char *bomptr = utf8_bom;
de056402 704
8032cc44
JS
705 /* For the parser event callback */
706 struct parse_event_data event_data = {
707 CONFIG_EVENT_EOF, 0, opts
708 };
709
17712991 710 for (;;) {
8032cc44
JS
711 int c;
712
713 c = get_next_char();
de056402
PB
714 if (bomptr && *bomptr) {
715 /* We are at the file beginning; skip UTF8-encoded BOM
716 * if present. Sane editors won't put this in on their
717 * own, but e.g. Windows Notepad will do it happily. */
599446dc 718 if (c == (*bomptr & 0377)) {
de056402
PB
719 bomptr++;
720 continue;
721 } else {
722 /* Do not tolerate partial BOM. */
723 if (bomptr != utf8_bom)
724 break;
725 /* No BOM at file beginning. Cool. */
726 bomptr = NULL;
727 }
728 }
17712991 729 if (c == '\n') {
8032cc44
JS
730 if (cf->eof) {
731 if (do_event(CONFIG_EVENT_EOF, &event_data) < 0)
732 return -1;
17712991 733 return 0;
8032cc44
JS
734 }
735 if (do_event(CONFIG_EVENT_WHITESPACE, &event_data) < 0)
736 return -1;
17712991
LT
737 comment = 0;
738 continue;
739 }
8032cc44 740 if (comment)
17712991 741 continue;
8032cc44
JS
742 if (isspace(c)) {
743 if (do_event(CONFIG_EVENT_WHITESPACE, &event_data) < 0)
744 return -1;
745 continue;
746 }
17712991 747 if (c == '#' || c == ';') {
8032cc44
JS
748 if (do_event(CONFIG_EVENT_COMMENT, &event_data) < 0)
749 return -1;
17712991
LT
750 comment = 1;
751 continue;
752 }
753 if (c == '[') {
8032cc44
JS
754 if (do_event(CONFIG_EVENT_SECTION, &event_data) < 0)
755 return -1;
756
0971e992
BW
757 /* Reset prior to determining a new stem */
758 strbuf_reset(var);
759 if (get_base_var(var) < 0 || var->len < 1)
17712991 760 break;
0971e992
BW
761 strbuf_addch(var, '.');
762 baselen = var->len;
17712991
LT
763 continue;
764 }
765 if (!isalpha(c))
766 break;
8032cc44
JS
767
768 if (do_event(CONFIG_EVENT_ENTRY, &event_data) < 0)
769 return -1;
770
0971e992
BW
771 /*
772 * Truncate the var name back to the section header
773 * stem prior to grabbing the suffix part of the name
774 * and the value.
775 */
776 strbuf_setlen(var, baselen);
777 strbuf_addch(var, tolower(c));
778 if (get_value(fn, data, var) < 0)
17712991
LT
779 break;
780 }
1b8132d9 781
8032cc44
JS
782 if (do_event(CONFIG_EVENT_ERROR, &event_data) < 0)
783 return -1;
784
1b8132d9
VA
785 switch (cf->origin_type) {
786 case CONFIG_ORIGIN_BLOB:
787 error_msg = xstrfmt(_("bad config line %d in blob %s"),
788 cf->linenr, cf->name);
789 break;
790 case CONFIG_ORIGIN_FILE:
791 error_msg = xstrfmt(_("bad config line %d in file %s"),
792 cf->linenr, cf->name);
793 break;
794 case CONFIG_ORIGIN_STDIN:
795 error_msg = xstrfmt(_("bad config line %d in standard input"),
796 cf->linenr);
797 break;
798 case CONFIG_ORIGIN_SUBMODULE_BLOB:
799 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
800 cf->linenr, cf->name);
801 break;
802 case CONFIG_ORIGIN_CMDLINE:
803 error_msg = xstrfmt(_("bad config line %d in command line %s"),
804 cf->linenr, cf->name);
805 break;
806 default:
807 error_msg = xstrfmt(_("bad config line %d in %s"),
808 cf->linenr, cf->name);
809 }
810
b2dc0945 811 if (cf->die_on_error)
1b8132d9 812 die("%s", error_msg);
b2dc0945 813 else
1b8132d9
VA
814 error_return = error("%s", error_msg);
815
816 free(error_msg);
817 return error_return;
17712991
LT
818}
819
ebaa1bd4 820static int parse_unit_factor(const char *end, uintmax_t *val)
0b87b6e0
BD
821{
822 if (!*end)
823 return 1;
c8deb5a1
SP
824 else if (!strcasecmp(end, "k")) {
825 *val *= 1024;
826 return 1;
827 }
828 else if (!strcasecmp(end, "m")) {
829 *val *= 1024 * 1024;
830 return 1;
831 }
832 else if (!strcasecmp(end, "g")) {
833 *val *= 1024 * 1024 * 1024;
834 return 1;
835 }
836 return 0;
0b87b6e0
BD
837}
838
7192777d 839static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
840{
841 if (value && *value) {
842 char *end;
ebaa1bd4
NA
843 intmax_t val;
844 uintmax_t uval;
845 uintmax_t factor = 1;
846
847 errno = 0;
848 val = strtoimax(value, &end, 0);
849 if (errno == ERANGE)
850 return 0;
33fdd77e
JK
851 if (!parse_unit_factor(end, &factor)) {
852 errno = EINVAL;
c8deb5a1 853 return 0;
33fdd77e 854 }
83915ba5 855 uval = labs(val);
ebaa1bd4 856 uval *= factor;
83915ba5 857 if (uval > max || labs(val) > uval) {
33fdd77e 858 errno = ERANGE;
ebaa1bd4 859 return 0;
33fdd77e 860 }
ebaa1bd4
NA
861 val *= factor;
862 *ret = val;
0b87b6e0
BD
863 return 1;
864 }
33fdd77e 865 errno = EINVAL;
0b87b6e0
BD
866 return 0;
867}
868
0b4dc661 869static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
870{
871 if (value && *value) {
872 char *end;
ebaa1bd4
NA
873 uintmax_t val;
874 uintmax_t oldval;
875
876 errno = 0;
877 val = strtoumax(value, &end, 0);
878 if (errno == ERANGE)
879 return 0;
880 oldval = val;
33fdd77e
JK
881 if (!parse_unit_factor(end, &val)) {
882 errno = EINVAL;
c8deb5a1 883 return 0;
33fdd77e
JK
884 }
885 if (val > max || oldval > val) {
886 errno = ERANGE;
ebaa1bd4 887 return 0;
33fdd77e 888 }
c8deb5a1 889 *ret = val;
0b87b6e0 890 return 1;
17712991 891 }
33fdd77e 892 errno = EINVAL;
0b87b6e0
BD
893 return 0;
894}
895
42d194e9 896static int git_parse_int(const char *value, int *ret)
c1867cea 897{
7192777d 898 intmax_t tmp;
42d194e9 899 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
900 return 0;
901 *ret = tmp;
902 return 1;
903}
904
00160242
JK
905static int git_parse_int64(const char *value, int64_t *ret)
906{
907 intmax_t tmp;
908 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
909 return 0;
910 *ret = tmp;
911 return 1;
912}
913
7192777d
JK
914int git_parse_ulong(const char *value, unsigned long *ret)
915{
916 uintmax_t tmp;
917 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
918 return 0;
919 *ret = tmp;
920 return 1;
921}
922
37ee680d
DT
923static int git_parse_ssize_t(const char *value, ssize_t *ret)
924{
925 intmax_t tmp;
926 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
927 return 0;
928 *ret = tmp;
929 return 1;
930}
931
06bdc23b 932NORETURN
2f666581 933static void die_bad_number(const char *name, const char *value)
c1867cea 934{
078fe305
JNA
935 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
936
2f666581
JK
937 if (!value)
938 value = "";
939
1b8132d9 940 if (!(cf && cf->name))
078fe305
JNA
941 die(_("bad numeric config value '%s' for '%s': %s"),
942 value, name, error_type);
1b8132d9
VA
943
944 switch (cf->origin_type) {
945 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
946 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
947 value, name, cf->name, error_type);
1b8132d9 948 case CONFIG_ORIGIN_FILE:
078fe305
JNA
949 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
950 value, name, cf->name, error_type);
1b8132d9 951 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
952 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
953 value, name, error_type);
1b8132d9 954 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
955 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
956 value, name, cf->name, error_type);
1b8132d9 957 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
958 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
959 value, name, cf->name, error_type);
1b8132d9 960 default:
078fe305
JNA
961 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
962 value, name, cf->name, error_type);
1b8132d9 963 }
c1867cea
JK
964}
965
0b87b6e0
BD
966int git_config_int(const char *name, const char *value)
967{
42d194e9
JK
968 int ret;
969 if (!git_parse_int(value, &ret))
2f666581 970 die_bad_number(name, value);
0b87b6e0
BD
971 return ret;
972}
973
00160242
JK
974int64_t git_config_int64(const char *name, const char *value)
975{
976 int64_t ret;
977 if (!git_parse_int64(value, &ret))
978 die_bad_number(name, value);
0b87b6e0
BD
979 return ret;
980}
981
982unsigned long git_config_ulong(const char *name, const char *value)
983{
984 unsigned long ret;
985 if (!git_parse_ulong(value, &ret))
2f666581 986 die_bad_number(name, value);
0b87b6e0 987 return ret;
17712991
LT
988}
989
37ee680d
DT
990ssize_t git_config_ssize_t(const char *name, const char *value)
991{
992 ssize_t ret;
993 if (!git_parse_ssize_t(value, &ret))
994 die_bad_number(name, value);
995 return ret;
996}
997
9be04d64 998static int git_parse_maybe_bool_text(const char *value)
17712991
LT
999{
1000 if (!value)
1001 return 1;
1002 if (!*value)
1003 return 0;
8420ccd8
JH
1004 if (!strcasecmp(value, "true")
1005 || !strcasecmp(value, "yes")
1006 || !strcasecmp(value, "on"))
17712991 1007 return 1;
8420ccd8
JH
1008 if (!strcasecmp(value, "false")
1009 || !strcasecmp(value, "no")
1010 || !strcasecmp(value, "off"))
17712991 1011 return 0;
8420ccd8
JH
1012 return -1;
1013}
1014
9be04d64 1015int git_parse_maybe_bool(const char *value)
b2be2f6a 1016{
9be04d64 1017 int v = git_parse_maybe_bool_text(value);
b2be2f6a
JK
1018 if (0 <= v)
1019 return v;
42d194e9 1020 if (git_parse_int(value, &v))
db6195ef 1021 return !!v;
b2be2f6a
JK
1022 return -1;
1023}
1024
8420ccd8
JH
1025int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
1026{
9be04d64 1027 int v = git_parse_maybe_bool_text(value);
8420ccd8
JH
1028 if (0 <= v) {
1029 *is_bool = 1;
1030 return v;
1031 }
a53f2ec6 1032 *is_bool = 0;
c35b0b58 1033 return git_config_int(name, value);
17712991
LT
1034}
1035
a53f2ec6
JH
1036int git_config_bool(const char *name, const char *value)
1037{
1038 int discard;
c35b0b58 1039 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
1040}
1041
ea5105a5
CC
1042int git_config_string(const char **dest, const char *var, const char *value)
1043{
1044 if (!value)
1045 return config_error_nonbool(var);
1046 *dest = xstrdup(value);
1047 return 0;
1048}
1049
395de250
MM
1050int git_config_pathname(const char **dest, const char *var, const char *value)
1051{
1052 if (!value)
1053 return config_error_nonbool(var);
4aad2f16 1054 *dest = expand_user_path(value, 0);
395de250 1055 if (!*dest)
8262aaa2 1056 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
1057 return 0;
1058}
1059
5f967424
HM
1060int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *value)
1061{
1062 if (!value)
1063 return config_error_nonbool(var);
1064 if (parse_expiry_date(value, timestamp))
1065 return error(_("'%s' for '%s' is not a valid timestamp"),
1066 value, var);
1067 return 0;
1068}
1069
806e2ad7 1070static int git_default_core_config(const char *var, const char *value)
17712991
LT
1071{
1072 /* This needs a better name */
1073 if (!strcmp(var, "core.filemode")) {
1074 trust_executable_bit = git_config_bool(var, value);
1075 return 0;
1076 }
1ce4790b
AR
1077 if (!strcmp(var, "core.trustctime")) {
1078 trust_ctime = git_config_bool(var, value);
1079 return 0;
1080 }
c1b5d738 1081 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
1082 if (!strcasecmp(value, "default"))
1083 check_stat = 1;
1084 else if (!strcasecmp(value, "minimal"))
1085 check_stat = 0;
1086 }
17712991 1087
9378c161
JH
1088 if (!strcmp(var, "core.quotepath")) {
1089 quote_path_fully = git_config_bool(var, value);
1090 return 0;
1091 }
1092
78a8d641
JS
1093 if (!strcmp(var, "core.symlinks")) {
1094 has_symlinks = git_config_bool(var, value);
1095 return 0;
1096 }
1097
0a9b88b7
LT
1098 if (!strcmp(var, "core.ignorecase")) {
1099 ignore_case = git_config_bool(var, value);
1100 return 0;
1101 }
1102
64589a03
JH
1103 if (!strcmp(var, "core.attributesfile"))
1104 return git_config_pathname(&git_attributes_file, var, value);
1105
867ad08a
ÆAB
1106 if (!strcmp(var, "core.hookspath"))
1107 return git_config_pathname(&git_hooks_path, var, value);
1108
7d1864ce
JH
1109 if (!strcmp(var, "core.bare")) {
1110 is_bare_repository_cfg = git_config_bool(var, value);
1111 return 0;
1112 }
1113
5f73076c
JH
1114 if (!strcmp(var, "core.ignorestat")) {
1115 assume_unchanged = git_config_bool(var, value);
1116 return 0;
1117 }
1118
e388c738
JH
1119 if (!strcmp(var, "core.prefersymlinkrefs")) {
1120 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
1121 return 0;
1122 }
1123
6de08ae6 1124 if (!strcmp(var, "core.logallrefupdates")) {
341fb286
CW
1125 if (value && !strcasecmp(value, "always"))
1126 log_all_ref_updates = LOG_REFS_ALWAYS;
1127 else if (git_config_bool(var, value))
1128 log_all_ref_updates = LOG_REFS_NORMAL;
1129 else
1130 log_all_ref_updates = LOG_REFS_NONE;
6de08ae6
SP
1131 return 0;
1132 }
1133
2f8acdb3
JH
1134 if (!strcmp(var, "core.warnambiguousrefs")) {
1135 warn_ambiguous_refs = git_config_bool(var, value);
1136 return 0;
1137 }
1138
a71f09fe 1139 if (!strcmp(var, "core.abbrev")) {
48d5014d
JH
1140 if (!value)
1141 return config_error_nonbool(var);
1142 if (!strcasecmp(value, "auto"))
1143 default_abbrev = -1;
1144 else {
1145 int abbrev = git_config_int(var, value);
1146 if (abbrev < minimum_abbrev || abbrev > 40)
1147 return error("abbrev length out of range: %d", abbrev);
1148 default_abbrev = abbrev;
1149 }
dce96489
LT
1150 return 0;
1151 }
1152
5b33cb1f
JK
1153 if (!strcmp(var, "core.disambiguate"))
1154 return set_disambiguate_hint_config(var, value);
1155
960ccca6 1156 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
1157 int level = git_config_int(var, value);
1158 if (level == -1)
1159 level = Z_DEFAULT_COMPRESSION;
1160 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1161 die(_("bad zlib compression level %d"), level);
12f6c308 1162 zlib_compression_level = level;
960ccca6
DH
1163 zlib_compression_seen = 1;
1164 return 0;
1165 }
1166
1167 if (!strcmp(var, "core.compression")) {
1168 int level = git_config_int(var, value);
1169 if (level == -1)
1170 level = Z_DEFAULT_COMPRESSION;
1171 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1172 die(_("bad zlib compression level %d"), level);
960ccca6
DH
1173 core_compression_level = level;
1174 core_compression_seen = 1;
1175 if (!zlib_compression_seen)
1176 zlib_compression_level = level;
8de7eeb5
JH
1177 if (!pack_compression_seen)
1178 pack_compression_level = level;
12f6c308
JBH
1179 return 0;
1180 }
1181
60bb8b14 1182 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 1183 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 1184 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
1185
1186 /* This value must be multiple of (pagesize * 2) */
1187 packed_git_window_size /= pgsz_x2;
1188 if (packed_git_window_size < 1)
1189 packed_git_window_size = 1;
1190 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
1191 return 0;
1192 }
1193
15366280 1194 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 1195 big_file_threshold = git_config_ulong(var, value);
15366280
JH
1196 return 0;
1197 }
1198
77ccc5bb 1199 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 1200 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
1201 return 0;
1202 }
1203
18bdec11 1204 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 1205 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
1206 return 0;
1207 }
1208
6c510bee 1209 if (!strcmp(var, "core.autocrlf")) {
d7f46334 1210 if (value && !strcasecmp(value, "input")) {
fd6cce9e 1211 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
1212 return 0;
1213 }
6c510bee
LT
1214 auto_crlf = git_config_bool(var, value);
1215 return 0;
1216 }
1217
21e5ad50
SP
1218 if (!strcmp(var, "core.safecrlf")) {
1219 if (value && !strcasecmp(value, "warn")) {
1220 safe_crlf = SAFE_CRLF_WARN;
1221 return 0;
1222 }
1223 safe_crlf = git_config_bool(var, value);
1224 return 0;
1225 }
1226
942e7747
EB
1227 if (!strcmp(var, "core.eol")) {
1228 if (value && !strcasecmp(value, "lf"))
ec70f52f 1229 core_eol = EOL_LF;
942e7747 1230 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 1231 core_eol = EOL_CRLF;
942e7747 1232 else if (value && !strcasecmp(value, "native"))
ec70f52f 1233 core_eol = EOL_NATIVE;
942e7747 1234 else
ec70f52f 1235 core_eol = EOL_UNSET;
942e7747
EB
1236 return 0;
1237 }
1238
a97a7468
JS
1239 if (!strcmp(var, "core.notesref")) {
1240 notes_ref_name = xstrdup(value);
1241 return 0;
1242 }
1243
806e2ad7
LT
1244 if (!strcmp(var, "core.editor"))
1245 return git_config_string(&editor_program, var, value);
1246
eff80a9f 1247 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
1248 if (!value)
1249 return config_error_nonbool(var);
ad524f83 1250 else if (!strcasecmp(value, "auto"))
84c9dc2c 1251 auto_comment_line_char = 1;
ad524f83 1252 else if (value[0] && !value[1]) {
649409b7 1253 comment_line_char = value[0];
84c9dc2c 1254 auto_comment_line_char = 0;
50b54fd7
NTND
1255 } else
1256 return error("core.commentChar should only be one character");
1257 return 0;
eff80a9f
JH
1258 }
1259
d3e7da89
AK
1260 if (!strcmp(var, "core.askpass"))
1261 return git_config_string(&askpass_program, var, value);
1262
806e2ad7 1263 if (!strcmp(var, "core.excludesfile"))
395de250 1264 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
1265
1266 if (!strcmp(var, "core.whitespace")) {
1267 if (!value)
1268 return config_error_nonbool(var);
1269 whitespace_rule_cfg = parse_whitespace_rule(value);
1270 return 0;
1271 }
1272
aafe9fba
LT
1273 if (!strcmp(var, "core.fsyncobjectfiles")) {
1274 fsync_object_files = git_config_bool(var, value);
1275 return 0;
1276 }
1277
671c9b7e
LT
1278 if (!strcmp(var, "core.preloadindex")) {
1279 core_preload_index = git_config_bool(var, value);
1280 return 0;
1281 }
1282
348df166
JS
1283 if (!strcmp(var, "core.createobject")) {
1284 if (!strcmp(value, "rename"))
1285 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1286 else if (!strcmp(value, "link"))
1287 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1288 else
8262aaa2 1289 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
1290 return 0;
1291 }
1292
08aefc9e
NTND
1293 if (!strcmp(var, "core.sparsecheckout")) {
1294 core_apply_sparse_checkout = git_config_bool(var, value);
1295 return 0;
1296 }
1297
76759c7d
TB
1298 if (!strcmp(var, "core.precomposeunicode")) {
1299 precomposed_unicode = git_config_bool(var, value);
1300 return 0;
1301 }
1302
a42643aa
JK
1303 if (!strcmp(var, "core.protecthfs")) {
1304 protect_hfs = git_config_bool(var, value);
1305 return 0;
1306 }
1307
2b4c6efc
JS
1308 if (!strcmp(var, "core.protectntfs")) {
1309 protect_ntfs = git_config_bool(var, value);
1310 return 0;
76759c7d
TB
1311 }
1312
f30afdab
JS
1313 if (!strcmp(var, "core.hidedotfiles")) {
1314 if (value && !strcasecmp(value, "dotgitonly"))
1315 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
1316 else
1317 hide_dotfiles = git_config_bool(var, value);
1318 return 0;
1319 }
1320
806e2ad7
LT
1321 /* Add other config variables here and to Documentation/config.txt. */
1322 return 0;
1323}
1324
1141f492 1325static int git_default_i18n_config(const char *var, const char *value)
d1364529 1326{
ea5105a5
CC
1327 if (!strcmp(var, "i18n.commitencoding"))
1328 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1329
ea5105a5
CC
1330 if (!strcmp(var, "i18n.logoutputencoding"))
1331 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1332
1141f492
LT
1333 /* Add other config variables here and to Documentation/config.txt. */
1334 return 0;
1335}
039bc64e 1336
1141f492
LT
1337static int git_default_branch_config(const char *var, const char *value)
1338{
9ed36cfa
JS
1339 if (!strcmp(var, "branch.autosetupmerge")) {
1340 if (value && !strcasecmp(value, "always")) {
1341 git_branch_track = BRANCH_TRACK_ALWAYS;
1342 return 0;
1343 }
1344 git_branch_track = git_config_bool(var, value);
1345 return 0;
1346 }
c998ae9b
DS
1347 if (!strcmp(var, "branch.autosetuprebase")) {
1348 if (!value)
1349 return config_error_nonbool(var);
1350 else if (!strcmp(value, "never"))
1351 autorebase = AUTOREBASE_NEVER;
1352 else if (!strcmp(value, "local"))
1353 autorebase = AUTOREBASE_LOCAL;
1354 else if (!strcmp(value, "remote"))
1355 autorebase = AUTOREBASE_REMOTE;
1356 else if (!strcmp(value, "always"))
1357 autorebase = AUTOREBASE_ALWAYS;
1358 else
8c3ca351 1359 return error("malformed value for %s", var);
c998ae9b
DS
1360 return 0;
1361 }
a9cc857a 1362
1ab661dd 1363 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1364 return 0;
1365}
1366
52153747
FAG
1367static int git_default_push_config(const char *var, const char *value)
1368{
1369 if (!strcmp(var, "push.default")) {
1370 if (!value)
1371 return config_error_nonbool(var);
1372 else if (!strcmp(value, "nothing"))
1373 push_default = PUSH_DEFAULT_NOTHING;
1374 else if (!strcmp(value, "matching"))
1375 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1376 else if (!strcmp(value, "simple"))
1377 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1378 else if (!strcmp(value, "upstream"))
1379 push_default = PUSH_DEFAULT_UPSTREAM;
1380 else if (!strcmp(value, "tracking")) /* deprecated */
1381 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1382 else if (!strcmp(value, "current"))
1383 push_default = PUSH_DEFAULT_CURRENT;
1384 else {
8c3ca351 1385 error("malformed value for %s: %s", var, value);
b55e6775
MM
1386 return error("Must be one of nothing, matching, simple, "
1387 "upstream or current.");
52153747
FAG
1388 }
1389 return 0;
1390 }
1391
1392 /* Add other config variables here and to Documentation/config.txt. */
1393 return 0;
1394}
1395
d551a488
MSO
1396static int git_default_mailmap_config(const char *var, const char *value)
1397{
1398 if (!strcmp(var, "mailmap.file"))
9352fd57 1399 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1400 if (!strcmp(var, "mailmap.blob"))
1401 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1402
1403 /* Add other config variables here and to Documentation/config.txt. */
1404 return 0;
1405}
1406
1141f492
LT
1407int git_default_config(const char *var, const char *value, void *dummy)
1408{
59556548 1409 if (starts_with(var, "core."))
1141f492
LT
1410 return git_default_core_config(var, value);
1411
59556548 1412 if (starts_with(var, "user."))
9597921b 1413 return git_ident_config(var, value, dummy);
1141f492 1414
59556548 1415 if (starts_with(var, "i18n."))
1141f492
LT
1416 return git_default_i18n_config(var, value);
1417
59556548 1418 if (starts_with(var, "branch."))
1141f492
LT
1419 return git_default_branch_config(var, value);
1420
59556548 1421 if (starts_with(var, "push."))
52153747
FAG
1422 return git_default_push_config(var, value);
1423
59556548 1424 if (starts_with(var, "mailmap."))
d551a488
MSO
1425 return git_default_mailmap_config(var, value);
1426
59556548 1427 if (starts_with(var, "advice."))
75194438
JK
1428 return git_default_advice_config(var, value);
1429
1141f492
LT
1430 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1431 pager_use_color = git_config_bool(var,value);
1432 return 0;
1433 }
1434
568508e7
JH
1435 if (!strcmp(var, "pack.packsizelimit")) {
1436 pack_size_limit_cfg = git_config_ulong(var, value);
1437 return 0;
1438 }
8de7eeb5
JH
1439
1440 if (!strcmp(var, "pack.compression")) {
1441 int level = git_config_int(var, value);
1442 if (level == -1)
1443 level = Z_DEFAULT_COMPRESSION;
1444 else if (level < 0 || level > Z_BEST_COMPRESSION)
1445 die(_("bad pack compression level %d"), level);
1446 pack_compression_level = level;
1447 pack_compression_seen = 1;
1448 return 0;
1449 }
1450
1141f492
LT
1451 /* Add other config variables here and to Documentation/config.txt. */
1452 return 0;
1453}
1454
ca4b5de2 1455/*
b2dc0945 1456 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1457 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1458 * this function.
1459 */
8032cc44
JS
1460static int do_config_from(struct config_source *top, config_fn_t fn, void *data,
1461 const struct config_options *opts)
ca4b5de2
HV
1462{
1463 int ret;
1464
1465 /* push config-file parsing state stack */
1466 top->prev = cf;
1467 top->linenr = 1;
1468 top->eof = 0;
1469 strbuf_init(&top->value, 1024);
1470 strbuf_init(&top->var, 1024);
1471 cf = top;
1472
8032cc44 1473 ret = git_parse_source(fn, data, opts);
ca4b5de2
HV
1474
1475 /* pop config-file parsing state stack */
1476 strbuf_release(&top->value);
1477 strbuf_release(&top->var);
1478 cf = top->prev;
1479
1480 return ret;
1481}
1482
3caec73b 1483static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1484 const enum config_origin_type origin_type,
1485 const char *name, const char *path, FILE *f,
8032cc44 1486 void *data, const struct config_options *opts)
17712991 1487{
3caec73b 1488 struct config_source top;
17712991 1489
3caec73b 1490 top.u.file = f;
473166b9 1491 top.origin_type = origin_type;
3caec73b
KS
1492 top.name = name;
1493 top.path = path;
1494 top.die_on_error = 1;
1495 top.do_fgetc = config_file_fgetc;
1496 top.do_ungetc = config_file_ungetc;
1497 top.do_ftell = config_file_ftell;
924aaf3e 1498
8032cc44 1499 return do_config_from(&top, fn, data, opts);
3caec73b 1500}
924aaf3e 1501
3caec73b
KS
1502static int git_config_from_stdin(config_fn_t fn, void *data)
1503{
8032cc44
JS
1504 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin,
1505 data, NULL);
3caec73b
KS
1506}
1507
8032cc44
JS
1508int git_config_from_file_with_options(config_fn_t fn, const char *filename,
1509 void *data,
1510 const struct config_options *opts)
3caec73b
KS
1511{
1512 int ret = -1;
1513 FILE *f;
924aaf3e 1514
e9d983f1 1515 f = fopen_or_warn(filename, "r");
3caec73b 1516 if (f) {
260d408e 1517 flockfile(f);
8032cc44
JS
1518 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename,
1519 filename, f, data, opts);
260d408e 1520 funlockfile(f);
17712991
LT
1521 fclose(f);
1522 }
1523 return ret;
1524}
10bea152 1525
8032cc44
JS
1526int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1527{
1528 return git_config_from_file_with_options(fn, filename, data, NULL);
1529}
1530
1b8132d9 1531int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
473166b9 1532 const char *name, const char *buf, size_t len, void *data)
1bc88819
HV
1533{
1534 struct config_source top;
1535
1536 top.u.buf.buf = buf;
1537 top.u.buf.len = len;
1538 top.u.buf.pos = 0;
473166b9 1539 top.origin_type = origin_type;
1bc88819 1540 top.name = name;
d14d4244 1541 top.path = NULL;
b2dc0945 1542 top.die_on_error = 0;
49d6cfa5
JK
1543 top.do_fgetc = config_buf_fgetc;
1544 top.do_ungetc = config_buf_ungetc;
1545 top.do_ftell = config_buf_ftell;
1bc88819 1546
8032cc44 1547 return do_config_from(&top, fn, data, NULL);
1bc88819
HV
1548}
1549
cd73de47 1550int git_config_from_blob_oid(config_fn_t fn,
9ebf689a 1551 const char *name,
cd73de47 1552 const struct object_id *oid,
9ebf689a 1553 void *data)
1bc88819
HV
1554{
1555 enum object_type type;
1556 char *buf;
1557 unsigned long size;
1558 int ret;
1559
cd73de47 1560 buf = read_sha1_file(oid->hash, &type, &size);
1bc88819
HV
1561 if (!buf)
1562 return error("unable to load config blob object '%s'", name);
1563 if (type != OBJ_BLOB) {
1564 free(buf);
1565 return error("reference '%s' does not point to a blob", name);
1566 }
1567
1b8132d9 1568 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
1bc88819
HV
1569 free(buf);
1570
1571 return ret;
1572}
1573
1574static int git_config_from_blob_ref(config_fn_t fn,
1575 const char *name,
1576 void *data)
1577{
cd73de47 1578 struct object_id oid;
1bc88819 1579
cd73de47 1580 if (get_oid(name, &oid) < 0)
1bc88819 1581 return error("unable to resolve config blob '%s'", name);
cd73de47 1582 return git_config_from_blob_oid(fn, name, &oid, data);
1bc88819
HV
1583}
1584
506b17b1
JS
1585const char *git_etc_gitconfig(void)
1586{
7f0e39fa 1587 static const char *system_wide;
2de9de5e
SP
1588 if (!system_wide)
1589 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1590 return system_wide;
506b17b1
JS
1591}
1592
23b0c478
SP
1593/*
1594 * Parse environment variable 'k' as a boolean (in various
1595 * possible spellings); if missing, use the default value 'def'.
1596 */
0ef37164 1597int git_env_bool(const char *k, int def)
ab88c363
JK
1598{
1599 const char *v = getenv(k);
1600 return v ? git_config_bool(k, v) : def;
1601}
1602
23b0c478
SP
1603/*
1604 * Parse environment variable 'k' as ulong with possibly a unit
1605 * suffix; if missing, use the default value 'val'.
1606 */
1607unsigned long git_env_ulong(const char *k, unsigned long val)
1608{
1609 const char *v = getenv(k);
1610 if (v && !git_parse_ulong(v, &val))
1611 die("failed to parse %s", k);
1612 return val;
1613}
1614
ab88c363
JK
1615int git_config_system(void)
1616{
1617 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1618}
1619
e145a0bc
NTND
1620static int do_git_config_sequence(const struct config_options *opts,
1621 config_fn_t fn, void *data)
4f629539 1622{
c72ee44b 1623 int ret = 0;
509adc33 1624 char *xdg_config = xdg_config_home("config");
4aad2f16 1625 char *user_config = expand_user_path("~/.gitconfig", 0);
e145a0bc
NTND
1626 char *repo_config;
1627
a577fb5f
BW
1628 if (opts->commondir)
1629 repo_config = mkpathdup("%s/config", opts->commondir);
e145a0bc
NTND
1630 else
1631 repo_config = NULL;
5f1a63e0 1632
9acc5911 1633 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
c72ee44b 1634 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
dc871831
DB
1635 ret += git_config_from_file(fn, git_etc_gitconfig(),
1636 data);
5f1a63e0 1637
9acc5911 1638 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1639 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1640 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1641
c72ee44b 1642 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1643 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1644
9acc5911 1645 current_parsing_scope = CONFIG_SCOPE_REPO;
c72ee44b 1646 if (repo_config && !access_or_die(repo_config, R_OK, 0))
aa387407 1647 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1648
9acc5911 1649 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
c72ee44b 1650 if (git_config_from_parameters(fn, data) < 0)
8262aaa2 1651 die(_("unable to parse command-line config"));
8b1fa778 1652
9acc5911 1653 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1654 free(xdg_config);
1655 free(user_config);
80181868 1656 free(repo_config);
c72ee44b 1657 return ret;
4f629539
JH
1658}
1659
dc8441fd
BW
1660int config_with_options(config_fn_t fn, void *data,
1661 struct git_config_source *config_source,
1662 const struct config_options *opts)
dbdf5854 1663{
9b25a0b5
JK
1664 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1665
c48f4b37 1666 if (opts->respect_includes) {
9b25a0b5
JK
1667 inc.fn = fn;
1668 inc.data = data;
c48f4b37 1669 inc.opts = opts;
9b25a0b5
JK
1670 fn = git_config_include;
1671 data = &inc;
1672 }
dbdf5854 1673
c9b5e2a5
JK
1674 /*
1675 * If we have a specific filename, use it. Otherwise, follow the
1676 * regular lookup sequence.
1677 */
3caec73b
KS
1678 if (config_source && config_source->use_stdin)
1679 return git_config_from_stdin(fn, data);
1680 else if (config_source && config_source->file)
c8985ce0
KS
1681 return git_config_from_file(fn, config_source->file, data);
1682 else if (config_source && config_source->blob)
1683 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1684
e145a0bc 1685 return do_git_config_sequence(opts, fn, data);
dbdf5854
NTND
1686}
1687
155ef25f 1688static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1689{
155ef25f
TA
1690 int i, value_index;
1691 struct string_list *values;
1692 struct config_set_element *entry;
1693 struct configset_list *list = &cs->list;
155ef25f
TA
1694
1695 for (i = 0; i < list->nr; i++) {
1696 entry = list->items[i].e;
1697 value_index = list->items[i].value_index;
1698 values = &entry->value_list;
0d44a2da
JK
1699
1700 current_config_kvi = values->items[value_index].util;
1701
1702 if (fn(entry->key, values->items[value_index].string, data) < 0)
1703 git_die_config_linenr(entry->key,
1704 current_config_kvi->filename,
1705 current_config_kvi->linenr);
1706
1707 current_config_kvi = NULL;
155ef25f
TA
1708 }
1709}
1710
0654aa57
JS
1711void read_early_config(config_fn_t cb, void *data)
1712{
c48f4b37 1713 struct config_options opts = {0};
d3fb71b3
BW
1714 struct strbuf commondir = STRBUF_INIT;
1715 struct strbuf gitdir = STRBUF_INIT;
1a27409a 1716
c48f4b37 1717 opts.respect_includes = 1;
0654aa57 1718
a577fb5f
BW
1719 if (have_git_dir()) {
1720 opts.commondir = get_git_common_dir();
2185fde5 1721 opts.git_dir = get_git_dir();
0654aa57 1722 /*
1a27409a
JS
1723 * When setup_git_directory() was not yet asked to discover the
1724 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1725 * is any repository config we should use (but unlike
1726 * setup_git_directory_gently(), no global state is changed, most
1727 * notably, the current working directory is still the same after the
1728 * call).
0654aa57 1729 */
a577fb5f
BW
1730 } else if (!discover_git_directory(&commondir, &gitdir)) {
1731 opts.commondir = commondir.buf;
d3fb71b3 1732 opts.git_dir = gitdir.buf;
a577fb5f 1733 }
2185fde5 1734
dc8441fd 1735 config_with_options(cb, data, NULL, &opts);
0654aa57 1736
d3fb71b3
BW
1737 strbuf_release(&commondir);
1738 strbuf_release(&gitdir);
0654aa57
JS
1739}
1740
3c8687a7
TA
1741static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1742{
1743 struct config_set_element k;
1744 struct config_set_element *found_entry;
1745 char *normalized_key;
3c8687a7
TA
1746 /*
1747 * `key` may come from the user, so normalize it before using it
1748 * for querying entries from the hashmap.
1749 */
270cd9ea 1750 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1751 return NULL;
1752
1753 hashmap_entry_init(&k, strhash(normalized_key));
1754 k.key = normalized_key;
1755 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1756 free(normalized_key);
1757 return found_entry;
1758}
1759
1760static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1761{
1762 struct config_set_element *e;
3df8fd62 1763 struct string_list_item *si;
155ef25f 1764 struct configset_list_item *l_item;
3df8fd62
TA
1765 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1766
3c8687a7
TA
1767 e = configset_find_element(cs, key);
1768 /*
1769 * Since the keys are being fed by git_config*() callback mechanism, they
1770 * are already normalized. So simply add them without any further munging.
1771 */
1772 if (!e) {
1773 e = xmalloc(sizeof(*e));
1774 hashmap_entry_init(e, strhash(key));
1775 e->key = xstrdup(key);
1776 string_list_init(&e->value_list, 1);
1777 hashmap_add(&cs->config_hash, e);
1778 }
8c53f071 1779 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1780
1781 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1782 l_item = &cs->list.items[cs->list.nr++];
1783 l_item->e = e;
1784 l_item->value_index = e->value_list.nr - 1;
1785
3258258f
JK
1786 if (!cf)
1787 die("BUG: configset_add_value has no source");
1788 if (cf->name) {
3df8fd62
TA
1789 kv_info->filename = strintern(cf->name);
1790 kv_info->linenr = cf->linenr;
1b8132d9 1791 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1792 } else {
1793 /* for values read from `git_config_from_parameters()` */
1794 kv_info->filename = NULL;
1795 kv_info->linenr = -1;
1b8132d9 1796 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1797 }
9acc5911 1798 kv_info->scope = current_parsing_scope;
3df8fd62 1799 si->util = kv_info;
3c8687a7
TA
1800
1801 return 0;
1802}
1803
7663cdc8 1804static int config_set_element_cmp(const void *unused_cmp_data,
77bdc097
SB
1805 const void *entry,
1806 const void *entry_or_key,
7663cdc8 1807 const void *unused_keydata)
3c8687a7 1808{
77bdc097
SB
1809 const struct config_set_element *e1 = entry;
1810 const struct config_set_element *e2 = entry_or_key;
1811
3c8687a7
TA
1812 return strcmp(e1->key, e2->key);
1813}
1814
1815void git_configset_init(struct config_set *cs)
1816{
77bdc097 1817 hashmap_init(&cs->config_hash, config_set_element_cmp, NULL, 0);
3c8687a7 1818 cs->hash_initialized = 1;
155ef25f
TA
1819 cs->list.nr = 0;
1820 cs->list.alloc = 0;
1821 cs->list.items = NULL;
3c8687a7
TA
1822}
1823
1824void git_configset_clear(struct config_set *cs)
1825{
1826 struct config_set_element *entry;
1827 struct hashmap_iter iter;
1828 if (!cs->hash_initialized)
1829 return;
1830
1831 hashmap_iter_init(&cs->config_hash, &iter);
1832 while ((entry = hashmap_iter_next(&iter))) {
1833 free(entry->key);
3df8fd62 1834 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1835 }
1836 hashmap_free(&cs->config_hash, 1);
1837 cs->hash_initialized = 0;
155ef25f
TA
1838 free(cs->list.items);
1839 cs->list.nr = 0;
1840 cs->list.alloc = 0;
1841 cs->list.items = NULL;
3c8687a7
TA
1842}
1843
1844static int config_set_callback(const char *key, const char *value, void *cb)
1845{
1846 struct config_set *cs = cb;
1847 configset_add_value(cs, key, value);
1848 return 0;
1849}
1850
1851int git_configset_add_file(struct config_set *cs, const char *filename)
1852{
1853 return git_config_from_file(config_set_callback, filename, cs);
1854}
1855
1856int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1857{
1858 const struct string_list *values = NULL;
1859 /*
1860 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1861 * queried key in the files of the configset, the value returned will be the last
1862 * value in the value list for that key.
1863 */
1864 values = git_configset_get_value_multi(cs, key);
1865
1866 if (!values)
1867 return 1;
1868 assert(values->nr > 0);
1869 *value = values->items[values->nr - 1].string;
1870 return 0;
1871}
1872
1873const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1874{
1875 struct config_set_element *e = configset_find_element(cs, key);
1876 return e ? &e->value_list : NULL;
1877}
1878
1879int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1880{
1881 const char *value;
1882 if (!git_configset_get_value(cs, key, &value))
1883 return git_config_string(dest, key, value);
1884 else
1885 return 1;
1886}
1887
1888int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1889{
1890 return git_configset_get_string_const(cs, key, (const char **)dest);
1891}
1892
1893int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1894{
1895 const char *value;
1896 if (!git_configset_get_value(cs, key, &value)) {
1897 *dest = git_config_int(key, value);
1898 return 0;
1899 } else
1900 return 1;
1901}
1902
1903int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1904{
1905 const char *value;
1906 if (!git_configset_get_value(cs, key, &value)) {
1907 *dest = git_config_ulong(key, value);
1908 return 0;
1909 } else
1910 return 1;
1911}
1912
1913int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1914{
1915 const char *value;
1916 if (!git_configset_get_value(cs, key, &value)) {
1917 *dest = git_config_bool(key, value);
1918 return 0;
1919 } else
1920 return 1;
1921}
1922
1923int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1924 int *is_bool, int *dest)
1925{
1926 const char *value;
1927 if (!git_configset_get_value(cs, key, &value)) {
1928 *dest = git_config_bool_or_int(key, value, is_bool);
1929 return 0;
1930 } else
1931 return 1;
1932}
1933
1934int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1935{
1936 const char *value;
1937 if (!git_configset_get_value(cs, key, &value)) {
89576613 1938 *dest = git_parse_maybe_bool(value);
3c8687a7
TA
1939 if (*dest == -1)
1940 return -1;
1941 return 0;
1942 } else
1943 return 1;
1944}
1945
1946int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1947{
1948 const char *value;
1949 if (!git_configset_get_value(cs, key, &value))
1950 return git_config_pathname(dest, key, value);
1951 else
1952 return 1;
1953}
1954
3b256228
BW
1955/* Functions use to read configuration from a repository */
1956static void repo_read_config(struct repository *repo)
3c8687a7 1957{
3b256228
BW
1958 struct config_options opts;
1959
1960 opts.respect_includes = 1;
1961 opts.commondir = repo->commondir;
1962 opts.git_dir = repo->gitdir;
1963
1964 if (!repo->config)
1965 repo->config = xcalloc(1, sizeof(struct config_set));
1966 else
1967 git_configset_clear(repo->config);
1968
1969 git_configset_init(repo->config);
1970
1971 if (config_with_options(config_set_callback, repo->config, NULL, &opts) < 0)
1972 /*
1973 * config_with_options() normally returns only
1974 * zero, as most errors are fatal, and
1975 * non-fatal potential errors are guarded by "if"
1976 * statements that are entered only when no error is
1977 * possible.
1978 *
1979 * If we ever encounter a non-fatal error, it means
1980 * something went really wrong and we should stop
1981 * immediately.
1982 */
1983 die(_("unknown error occurred while reading the configuration files"));
1984}
1985
1986static void git_config_check_init(struct repository *repo)
1987{
1988 if (repo->config && repo->config->hash_initialized)
3c8687a7 1989 return;
3b256228 1990 repo_read_config(repo);
3c8687a7
TA
1991}
1992
3b256228 1993static void repo_config_clear(struct repository *repo)
3c8687a7 1994{
3b256228 1995 if (!repo->config || !repo->config->hash_initialized)
3c8687a7 1996 return;
3b256228 1997 git_configset_clear(repo->config);
3c8687a7
TA
1998}
1999
3b256228 2000void repo_config(struct repository *repo, config_fn_t fn, void *data)
3c8687a7 2001{
3b256228
BW
2002 git_config_check_init(repo);
2003 configset_iter(repo->config, fn, data);
3c8687a7
TA
2004}
2005
3b256228
BW
2006int repo_config_get_value(struct repository *repo,
2007 const char *key, const char **value)
3c8687a7 2008{
3b256228
BW
2009 git_config_check_init(repo);
2010 return git_configset_get_value(repo->config, key, value);
3c8687a7
TA
2011}
2012
3b256228
BW
2013const struct string_list *repo_config_get_value_multi(struct repository *repo,
2014 const char *key)
2015{
2016 git_config_check_init(repo);
2017 return git_configset_get_value_multi(repo->config, key);
2018}
2019
2020int repo_config_get_string_const(struct repository *repo,
2021 const char *key, const char **dest)
2022{
2023 int ret;
2024 git_config_check_init(repo);
2025 ret = git_configset_get_string_const(repo->config, key, dest);
2026 if (ret < 0)
2027 git_die_config(key, NULL);
2028 return ret;
2029}
2030
2031int repo_config_get_string(struct repository *repo,
2032 const char *key, char **dest)
2033{
2034 git_config_check_init(repo);
2035 return repo_config_get_string_const(repo, key, (const char **)dest);
2036}
2037
2038int repo_config_get_int(struct repository *repo,
2039 const char *key, int *dest)
2040{
2041 git_config_check_init(repo);
2042 return git_configset_get_int(repo->config, key, dest);
2043}
2044
2045int repo_config_get_ulong(struct repository *repo,
2046 const char *key, unsigned long *dest)
2047{
2048 git_config_check_init(repo);
2049 return git_configset_get_ulong(repo->config, key, dest);
2050}
2051
2052int repo_config_get_bool(struct repository *repo,
2053 const char *key, int *dest)
2054{
2055 git_config_check_init(repo);
2056 return git_configset_get_bool(repo->config, key, dest);
2057}
2058
2059int repo_config_get_bool_or_int(struct repository *repo,
2060 const char *key, int *is_bool, int *dest)
2061{
2062 git_config_check_init(repo);
2063 return git_configset_get_bool_or_int(repo->config, key, is_bool, dest);
2064}
2065
2066int repo_config_get_maybe_bool(struct repository *repo,
2067 const char *key, int *dest)
2068{
2069 git_config_check_init(repo);
2070 return git_configset_get_maybe_bool(repo->config, key, dest);
2071}
2072
2073int repo_config_get_pathname(struct repository *repo,
2074 const char *key, const char **dest)
3c8687a7 2075{
5a80e97c 2076 int ret;
3b256228
BW
2077 git_config_check_init(repo);
2078 ret = git_configset_get_pathname(repo->config, key, dest);
5a80e97c
TA
2079 if (ret < 0)
2080 git_die_config(key, NULL);
2081 return ret;
3c8687a7
TA
2082}
2083
3b256228
BW
2084/* Functions used historically to read configuration from 'the_repository' */
2085void git_config(config_fn_t fn, void *data)
2086{
2087 repo_config(the_repository, fn, data);
2088}
2089
2090void git_config_clear(void)
2091{
2092 repo_config_clear(the_repository);
2093}
2094
2095int git_config_get_value(const char *key, const char **value)
2096{
2097 return repo_config_get_value(the_repository, key, value);
2098}
2099
2100const struct string_list *git_config_get_value_multi(const char *key)
2101{
2102 return repo_config_get_value_multi(the_repository, key);
2103}
2104
2105int git_config_get_string_const(const char *key, const char **dest)
2106{
2107 return repo_config_get_string_const(the_repository, key, dest);
2108}
2109
3c8687a7
TA
2110int git_config_get_string(const char *key, char **dest)
2111{
3b256228 2112 return repo_config_get_string(the_repository, key, dest);
3c8687a7
TA
2113}
2114
2115int git_config_get_int(const char *key, int *dest)
2116{
3b256228 2117 return repo_config_get_int(the_repository, key, dest);
3c8687a7
TA
2118}
2119
2120int git_config_get_ulong(const char *key, unsigned long *dest)
2121{
3b256228 2122 return repo_config_get_ulong(the_repository, key, dest);
3c8687a7
TA
2123}
2124
2125int git_config_get_bool(const char *key, int *dest)
2126{
3b256228 2127 return repo_config_get_bool(the_repository, key, dest);
3c8687a7
TA
2128}
2129
2130int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
2131{
3b256228 2132 return repo_config_get_bool_or_int(the_repository, key, is_bool, dest);
3c8687a7
TA
2133}
2134
2135int git_config_get_maybe_bool(const char *key, int *dest)
2136{
3b256228 2137 return repo_config_get_maybe_bool(the_repository, key, dest);
3c8687a7
TA
2138}
2139
2140int git_config_get_pathname(const char *key, const char **dest)
2141{
3b256228 2142 return repo_config_get_pathname(the_repository, key, dest);
5a80e97c
TA
2143}
2144
b22e51cb
BW
2145/*
2146 * Note: This function exists solely to maintain backward compatibility with
2147 * 'fetch' and 'update_clone' storing configuration in '.gitmodules' and should
2148 * NOT be used anywhere else.
2149 *
2150 * Runs the provided config function on the '.gitmodules' file found in the
2151 * working directory.
2152 */
2153void config_from_gitmodules(config_fn_t fn, void *data)
2154{
2155 if (the_repository->worktree) {
2156 char *file = repo_worktree_path(the_repository, GITMODULES_FILE);
2157 git_config_from_file(fn, file, data);
2158 free(file);
2159 }
2160}
2161
77d67977
CC
2162int git_config_get_expiry(const char *key, const char **output)
2163{
2164 int ret = git_config_get_string_const(key, output);
2165 if (ret)
2166 return ret;
2167 if (strcmp(*output, "now")) {
dddbad72 2168 timestamp_t now = approxidate("now");
77d67977
CC
2169 if (approxidate(*output) >= now)
2170 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
2171 }
2172 return ret;
2173}
2174
6e96cb52
JH
2175int git_config_get_expiry_in_days(const char *key, timestamp_t *expiry, timestamp_t now)
2176{
2177 char *expiry_string;
2178 intmax_t days;
2179 timestamp_t when;
2180
2181 if (git_config_get_string(key, &expiry_string))
2182 return 1; /* no such thing */
2183
2184 if (git_parse_signed(expiry_string, &days, maximum_signed_value_of_type(int))) {
2185 const int scale = 86400;
2186 *expiry = now - days * scale;
2187 return 0;
2188 }
2189
2190 if (!parse_expiry_date(expiry_string, &when)) {
2191 *expiry = when;
2192 return 0;
2193 }
2194 return -1; /* thing exists but cannot be parsed */
2195}
2196
435ec090
CC
2197int git_config_get_untracked_cache(void)
2198{
2199 int val = -1;
2200 const char *v;
2201
dae6c322
CC
2202 /* Hack for test programs like test-dump-untracked-cache */
2203 if (ignore_untracked_cache_config)
2204 return -1;
2205
435ec090
CC
2206 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
2207 return val;
2208
2209 if (!git_config_get_value("core.untrackedcache", &v)) {
2210 if (!strcasecmp(v, "keep"))
2211 return -1;
2212
f60ef2d6
CC
2213 error(_("unknown core.untrackedCache value '%s'; "
2214 "using 'keep' default value"), v);
435ec090
CC
2215 return -1;
2216 }
2217
2218 return -1; /* default value */
2219}
2220
1f44b09b
CC
2221int git_config_get_split_index(void)
2222{
2223 int val;
2224
2225 if (!git_config_get_maybe_bool("core.splitindex", &val))
2226 return val;
2227
2228 return -1; /* default value */
2229}
2230
72dcb7b3
CC
2231int git_config_get_max_percent_split_change(void)
2232{
2233 int val = -1;
2234
2235 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2236 if (0 <= val && val <= 100)
2237 return val;
2238
2239 return error(_("splitIndex.maxPercentChange value '%d' "
2240 "should be between 0 and 100"), val);
2241 }
2242
2243 return -1; /* default value */
2244}
2245
883e248b
BP
2246int git_config_get_fsmonitor(void)
2247{
2248 if (git_config_get_pathname("core.fsmonitor", &core_fsmonitor))
2249 core_fsmonitor = getenv("GIT_FSMONITOR_TEST");
2250
2251 if (core_fsmonitor && !*core_fsmonitor)
2252 core_fsmonitor = NULL;
2253
2254 if (core_fsmonitor)
2255 return 1;
2256
2257 return 0;
2258}
2259
5a80e97c
TA
2260NORETURN
2261void git_die_config_linenr(const char *key, const char *filename, int linenr)
2262{
2263 if (!filename)
2264 die(_("unable to parse '%s' from command-line config"), key);
2265 else
2266 die(_("bad config variable '%s' in file '%s' at line %d"),
2267 key, filename, linenr);
2268}
2269
2270NORETURN __attribute__((format(printf, 2, 3)))
2271void git_die_config(const char *key, const char *err, ...)
2272{
2273 const struct string_list *values;
2274 struct key_value_info *kv_info;
2275
2276 if (err) {
2277 va_list params;
2278 va_start(params, err);
2279 vreportf("error: ", err, params);
2280 va_end(params);
2281 }
2282 values = git_config_get_value_multi(key);
2283 kv_info = values->items[values->nr - 1].util;
2284 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2285}
2286
10bea152
JS
2287/*
2288 * Find all the stuff for git_config_set() below.
2289 */
4ddba79d 2290
fee8572c 2291struct config_store_data {
10bea152 2292 int baselen;
4b25d091 2293 char *key;
f98d863d 2294 int do_not_match;
4b25d091 2295 regex_t *value_regex;
4ddba79d 2296 int multi_replace;
6ae996f2
JS
2297 struct {
2298 size_t begin, end;
2299 enum config_event_t type;
22aedfcc 2300 int is_keys_section;
6ae996f2
JS
2301 } *parsed;
2302 unsigned int parsed_nr, parsed_alloc, *seen, seen_nr, seen_alloc;
5221c315 2303 unsigned int key_seen:1, section_seen:1, is_keys_section:1;
fee8572c 2304};
10bea152 2305
fee8572c
JS
2306static int matches(const char *key, const char *value,
2307 const struct config_store_data *store)
f98d863d 2308{
fee8572c 2309 if (strcmp(key, store->key))
c1063be2 2310 return 0; /* not ours */
fee8572c 2311 if (!store->value_regex)
c1063be2 2312 return 1; /* always matches */
fee8572c 2313 if (store->value_regex == CONFIG_REGEX_NONE)
c1063be2
JK
2314 return 0; /* never matches */
2315
fee8572c
JS
2316 return store->do_not_match ^
2317 (value && !regexec(store->value_regex, value, 0, NULL, 0));
f98d863d
JS
2318}
2319
6ae996f2
JS
2320static int store_aux_event(enum config_event_t type,
2321 size_t begin, size_t end, void *data)
2322{
2323 struct config_store_data *store = data;
2324
2325 ALLOC_GROW(store->parsed, store->parsed_nr + 1, store->parsed_alloc);
2326 store->parsed[store->parsed_nr].begin = begin;
2327 store->parsed[store->parsed_nr].end = end;
2328 store->parsed[store->parsed_nr].type = type;
6ae996f2
JS
2329
2330 if (type == CONFIG_EVENT_SECTION) {
2331 if (cf->var.len < 2 || cf->var.buf[cf->var.len - 1] != '.')
2332 BUG("Invalid section name '%s'", cf->var.buf);
2333
2334 /* Is this the section we were looking for? */
22aedfcc
JS
2335 store->is_keys_section =
2336 store->parsed[store->parsed_nr].is_keys_section =
2337 cf->var.len - 1 == store->baselen &&
6ae996f2
JS
2338 !strncasecmp(cf->var.buf, store->key, store->baselen);
2339 }
2340
22aedfcc
JS
2341 store->parsed_nr++;
2342
6ae996f2
JS
2343 return 0;
2344}
2345
4b25d091 2346static int store_aux(const char *key, const char *value, void *cb)
10bea152 2347{
fee8572c 2348 struct config_store_data *store = cb;
ae9ee41d 2349
5221c315 2350 if (store->key_seen) {
fee8572c 2351 if (matches(key, value, store)) {
668b9ade 2352 if (store->seen_nr == 1 && store->multi_replace == 0) {
8262aaa2 2353 warning(_("%s has multiple values"), key);
10bea152 2354 }
4ddba79d 2355
668b9ade
JS
2356 ALLOC_GROW(store->seen, store->seen_nr + 1,
2357 store->seen_alloc);
83786fa4 2358
6ae996f2 2359 store->seen[store->seen_nr] = store->parsed_nr;
668b9ade 2360 store->seen_nr++;
10bea152 2361 }
5221c315 2362 } else if (store->is_keys_section) {
ae9ee41d 2363 /*
6ae996f2
JS
2364 * Do not increment matches yet: this may not be a match, but we
2365 * are in the desired section.
ae9ee41d 2366 */
6ae996f2
JS
2367 ALLOC_GROW(store->seen, store->seen_nr + 1, store->seen_alloc);
2368 store->seen[store->seen_nr] = store->parsed_nr;
5221c315 2369 store->section_seen = 1;
6ae996f2
JS
2370
2371 if (matches(key, value, store)) {
2372 store->seen_nr++;
2373 store->key_seen = 1;
bdf0ef08 2374 }
10bea152 2375 }
5221c315 2376
10bea152
JS
2377 return 0;
2378}
2379
64c0d71c 2380static int write_error(const char *filename)
480c9e52 2381{
64c0d71c 2382 error("failed to write new configuration file %s", filename);
480c9e52
AW
2383
2384 /* Same error code as "failed to rename". */
2385 return 4;
2386}
2387
fee8572c
JS
2388static struct strbuf store_create_section(const char *key,
2389 const struct config_store_data *store)
10bea152 2390{
cb891a59 2391 const char *dot;
d9bd4cbb 2392 int i;
f285a2d7 2393 struct strbuf sb = STRBUF_INIT;
d14f7764 2394
fee8572c 2395 dot = memchr(key, '.', store->baselen);
d14f7764 2396 if (dot) {
cb891a59 2397 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
fee8572c 2398 for (i = dot - key + 1; i < store->baselen; i++) {
e5c349ba 2399 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2400 strbuf_addch(&sb, '\\');
2401 strbuf_addch(&sb, key[i]);
d14f7764 2402 }
cb891a59
KH
2403 strbuf_addstr(&sb, "\"]\n");
2404 } else {
fee8572c 2405 strbuf_addf(&sb, "[%.*s]\n", store->baselen, key);
d14f7764
LT
2406 }
2407
5463caab
SD
2408 return sb;
2409}
2410
fee8572c
JS
2411static ssize_t write_section(int fd, const char *key,
2412 const struct config_store_data *store)
5463caab 2413{
fee8572c 2414 struct strbuf sb = store_create_section(key, store);
3b48045c 2415 ssize_t ret;
5463caab 2416
782c030e 2417 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59 2418 strbuf_release(&sb);
480c9e52 2419
d9bd4cbb 2420 return ret;
10bea152
JS
2421}
2422
fee8572c
JS
2423static ssize_t write_pair(int fd, const char *key, const char *value,
2424 const struct config_store_data *store)
10bea152 2425{
d9bd4cbb
JK
2426 int i;
2427 ssize_t ret;
fee8572c 2428 int length = strlen(key + store->baselen + 1);
cb891a59 2429 const char *quote = "";
f285a2d7 2430 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2431
6281f394
JM
2432 /*
2433 * Check to see if the value needs to be surrounded with a dq pair.
2434 * Note that problematic characters are always backslash-quoted; this
2435 * check is about not losing leading or trailing SP and strings that
2436 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2437 * configuration parser.
2438 */
cdd4fb15 2439 if (value[0] == ' ')
cb891a59 2440 quote = "\"";
cdd4fb15
BG
2441 for (i = 0; value[i]; i++)
2442 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2443 quote = "\"";
2444 if (i && value[i - 1] == ' ')
2445 quote = "\"";
2446
cb891a59 2447 strbuf_addf(&sb, "\t%.*s = %s",
fee8572c 2448 length, key + store->baselen + 1, quote);
10bea152 2449
10bea152
JS
2450 for (i = 0; value[i]; i++)
2451 switch (value[i]) {
480c9e52 2452 case '\n':
cb891a59 2453 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2454 break;
2455 case '\t':
cb891a59 2456 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2457 break;
2458 case '"':
2459 case '\\':
cb891a59 2460 strbuf_addch(&sb, '\\');
1cf01a34 2461 /* fallthrough */
480c9e52 2462 default:
cb891a59 2463 strbuf_addch(&sb, value[i]);
480c9e52
AW
2464 break;
2465 }
cb891a59
KH
2466 strbuf_addf(&sb, "%s\n", quote);
2467
d9bd4cbb 2468 ret = write_in_full(fd, sb.buf, sb.len);
cb891a59
KH
2469 strbuf_release(&sb);
2470
d9bd4cbb 2471 return ret;
10bea152
JS
2472}
2473
22aedfcc
JS
2474/*
2475 * If we are about to unset the last key(s) in a section, and if there are
2476 * no comments surrounding (or included in) the section, we will want to
2477 * extend begin/end to remove the entire section.
2478 *
2479 * Note: the parameter `seen_ptr` points to the index into the store.seen
2480 * array. * This index may be incremented if a section has more than one
2481 * entry (which all are to be removed).
2482 */
2483static void maybe_remove_section(struct config_store_data *store,
2484 const char *contents,
2485 size_t *begin_offset, size_t *end_offset,
2486 int *seen_ptr)
2487{
2488 size_t begin;
2489 int i, seen, section_seen = 0;
2490
2491 /*
2492 * First, ensure that this is the first key, and that there are no
2493 * comments before the entry nor before the section header.
2494 */
2495 seen = *seen_ptr;
2496 for (i = store->seen[seen]; i > 0; i--) {
2497 enum config_event_t type = store->parsed[i - 1].type;
2498
2499 if (type == CONFIG_EVENT_COMMENT)
2500 /* There is a comment before this entry or section */
2501 return;
2502 if (type == CONFIG_EVENT_ENTRY) {
2503 if (!section_seen)
2504 /* This is not the section's first entry. */
2505 return;
2506 /* We encountered no comment before the section. */
2507 break;
2508 }
2509 if (type == CONFIG_EVENT_SECTION) {
2510 if (!store->parsed[i - 1].is_keys_section)
2511 break;
2512 section_seen = 1;
2513 }
2514 }
2515 begin = store->parsed[i].begin;
2516
2517 /*
2518 * Next, make sure that we are removing he last key(s) in the section,
2519 * and that there are no comments that are possibly about the current
2520 * section.
2521 */
2522 for (i = store->seen[seen] + 1; i < store->parsed_nr; i++) {
2523 enum config_event_t type = store->parsed[i].type;
2524
2525 if (type == CONFIG_EVENT_COMMENT)
2526 return;
2527 if (type == CONFIG_EVENT_SECTION) {
2528 if (store->parsed[i].is_keys_section)
2529 continue;
2530 break;
2531 }
2532 if (type == CONFIG_EVENT_ENTRY) {
2533 if (++seen < store->seen_nr &&
2534 i == store->seen[seen])
2535 /* We want to remove this entry, too */
2536 continue;
2537 /* There is another entry in this section. */
2538 return;
2539 }
2540 }
2541
2542 /*
2543 * We are really removing the last entry/entries from this section, and
2544 * there are no enclosed or surrounding comments. Remove the entire,
2545 * now-empty section.
2546 */
2547 *seen_ptr = seen;
2548 *begin_offset = begin;
2549 if (i < store->parsed_nr)
2550 *end_offset = store->parsed[i].begin;
2551 else
2552 *end_offset = store->parsed[store->parsed_nr - 1].end;
2553}
2554
30598ad0
PS
2555int git_config_set_in_file_gently(const char *config_filename,
2556 const char *key, const char *value)
5ec31182 2557{
30598ad0 2558 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2559}
2560
3d180648
PS
2561void git_config_set_in_file(const char *config_filename,
2562 const char *key, const char *value)
10bea152 2563{
3d180648 2564 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2565}
2566
30598ad0 2567int git_config_set_gently(const char *key, const char *value)
10bea152 2568{
30598ad0 2569 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2570}
2571
3d180648 2572void git_config_set(const char *key, const char *value)
b4c8aba6 2573{
3d180648 2574 git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
2575}
2576
2577/*
2578 * If value==NULL, unset in (remove from) config,
2579 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2580 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2581 * (only add a new one)
4ddba79d
JS
2582 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2583 * else all matching key/values (regardless how many) are removed,
2584 * before the new pair is written.
10bea152
JS
2585 *
2586 * Returns 0 on success.
2587 *
2588 * This function does this:
2589 *
2590 * - it locks the config file by creating ".git/config.lock"
2591 *
2592 * - it then parses the config using store_aux() as validator to find
2593 * the position on the key/value pair to replace. If it is to be unset,
2594 * it must be found exactly once.
2595 *
2596 * - the config file is mmap()ed and the part before the match (if any) is
2597 * written to the lock file, then the changed part and the rest.
2598 *
2599 * - the config file is removed and the lock file rename()d to it.
2600 *
2601 */
30598ad0
PS
2602int git_config_set_multivar_in_file_gently(const char *config_filename,
2603 const char *key, const char *value,
2604 const char *value_regex,
2605 int multi_replace)
10bea152 2606{
54d160ec 2607 int fd = -1, in_fd = -1;
dafc88b1 2608 int ret;
bfffb48c 2609 struct lock_file lock = LOCK_INIT;
0a5f5759 2610 char *filename_buf = NULL;
3a1b3126
JK
2611 char *contents = NULL;
2612 size_t contents_sz;
fee8572c
JS
2613 struct config_store_data store;
2614
2615 memset(&store, 0, sizeof(store));
4ddba79d 2616
b09c53a3
LP
2617 /* parse-key returns negative; flip the sign to feed exit(3) */
2618 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2619 if (ret)
dafc88b1 2620 goto out_free;
b17e659d
JS
2621
2622 store.multi_replace = multi_replace;
10bea152 2623
0a5f5759
JK
2624 if (!config_filename)
2625 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2626
2627 /*
6cbf973c 2628 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2629 * contents of .git/config will be written into it.
2630 */
bfffb48c 2631 fd = hold_lock_file_for_update(&lock, config_filename, 0);
6cbf973c 2632 if (fd < 0) {
f0658ec9 2633 error_errno("could not lock config file %s", config_filename);
10bea152 2634 free(store.key);
7a397419 2635 ret = CONFIG_NO_LOCK;
dafc88b1 2636 goto out_free;
10bea152
JS
2637 }
2638
2639 /*
2640 * If .git/config does not exist yet, write a minimal version.
2641 */
88fb958b
AR
2642 in_fd = open(config_filename, O_RDONLY);
2643 if ( in_fd < 0 ) {
10bea152
JS
2644 free(store.key);
2645
88fb958b 2646 if ( ENOENT != errno ) {
f0658ec9 2647 error_errno("opening %s", config_filename);
7a397419 2648 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2649 goto out_free;
88fb958b 2650 }
10bea152
JS
2651 /* if nothing to unset, error out */
2652 if (value == NULL) {
7a397419 2653 ret = CONFIG_NOTHING_SET;
dafc88b1 2654 goto out_free;
10bea152
JS
2655 }
2656
4b25d091 2657 store.key = (char *)key;
fee8572c
JS
2658 if (write_section(fd, key, &store) < 0 ||
2659 write_pair(fd, key, value, &store) < 0)
93c1e079
JH
2660 goto write_err_out;
2661 } else {
88fb958b 2662 struct stat st;
3a1b3126 2663 size_t copy_begin, copy_end;
dc49cd76 2664 int i, new_line = 0;
6ae996f2 2665 struct config_options opts;
10bea152
JS
2666
2667 if (value_regex == NULL)
2668 store.value_regex = NULL;
c1063be2
JK
2669 else if (value_regex == CONFIG_REGEX_NONE)
2670 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2671 else {
f98d863d
JS
2672 if (value_regex[0] == '!') {
2673 store.do_not_match = 1;
2674 value_regex++;
2675 } else
2676 store.do_not_match = 0;
2677
2d7320d0 2678 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2679 if (regcomp(store.value_regex, value_regex,
2680 REG_EXTENDED)) {
64c0d71c 2681 error("invalid pattern: %s", value_regex);
10bea152 2682 free(store.value_regex);
7a397419 2683 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2684 goto out_free;
10bea152
JS
2685 }
2686 }
2687
6ae996f2
JS
2688 ALLOC_GROW(store.parsed, 1, store.parsed_alloc);
2689 store.parsed[0].end = 0;
2690
2691 memset(&opts, 0, sizeof(opts));
2692 opts.event_fn = store_aux_event;
2693 opts.event_fn_data = &store;
10bea152
JS
2694
2695 /*
6ae996f2
JS
2696 * After this, store.parsed will contain offsets of all the
2697 * parsed elements, and store.seen will contain a list of
2698 * matches, as indices into store.parsed.
2699 *
10bea152
JS
2700 * As a side effect, we make sure to transform only a valid
2701 * existing config file.
2702 */
6ae996f2
JS
2703 if (git_config_from_file_with_options(store_aux,
2704 config_filename,
2705 &store, &opts)) {
64c0d71c 2706 error("invalid config file %s", config_filename);
10bea152 2707 free(store.key);
c1063be2
JK
2708 if (store.value_regex != NULL &&
2709 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2710 regfree(store.value_regex);
2711 free(store.value_regex);
2712 }
7a397419 2713 ret = CONFIG_INVALID_FILE;
dafc88b1 2714 goto out_free;
10bea152
JS
2715 }
2716
2717 free(store.key);
c1063be2
JK
2718 if (store.value_regex != NULL &&
2719 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2720 regfree(store.value_regex);
2721 free(store.value_regex);
2722 }
2723
4ddba79d 2724 /* if nothing to unset, or too many matches, error out */
668b9ade
JS
2725 if ((store.seen_nr == 0 && value == NULL) ||
2726 (store.seen_nr > 1 && multi_replace == 0)) {
7a397419 2727 ret = CONFIG_NOTHING_SET;
dafc88b1 2728 goto out_free;
10bea152
JS
2729 }
2730
29647d79
NTND
2731 if (fstat(in_fd, &st) == -1) {
2732 error_errno(_("fstat on %s failed"), config_filename);
2733 ret = CONFIG_INVALID_FILE;
2734 goto out_free;
2735 }
2736
dc49cd76 2737 contents_sz = xsize_t(st.st_size);
1570856b
JK
2738 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2739 MAP_PRIVATE, in_fd, 0);
2740 if (contents == MAP_FAILED) {
0e8771f1
JK
2741 if (errno == ENODEV && S_ISDIR(st.st_mode))
2742 errno = EISDIR;
f0658ec9 2743 error_errno("unable to mmap '%s'", config_filename);
1570856b
JK
2744 ret = CONFIG_INVALID_FILE;
2745 contents = NULL;
2746 goto out_free;
2747 }
10bea152 2748 close(in_fd);
54d160ec 2749 in_fd = -1;
10bea152 2750
bfffb48c
JK
2751 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
2752 error_errno("chmod on %s failed", get_lock_file_path(&lock));
daa22c6f
EW
2753 ret = CONFIG_NO_WRITE;
2754 goto out_free;
2755 }
2756
6ae996f2
JS
2757 if (store.seen_nr == 0) {
2758 if (!store.seen_alloc) {
2759 /* Did not see key nor section */
2760 ALLOC_GROW(store.seen, 1, store.seen_alloc);
2761 store.seen[0] = store.parsed_nr
2762 - !!store.parsed_nr;
2763 }
668b9ade 2764 store.seen_nr = 1;
6ae996f2 2765 }
4ddba79d 2766
668b9ade 2767 for (i = 0, copy_begin = 0; i < store.seen_nr; i++) {
6ae996f2
JS
2768 size_t replace_end;
2769 int j = store.seen[i];
2770
46fc89ce 2771 new_line = 0;
6ae996f2
JS
2772 if (!store.key_seen) {
2773 replace_end = copy_end = store.parsed[j].end;
2774 } else {
2775 replace_end = store.parsed[j].end;
2776 copy_end = store.parsed[j].begin;
22aedfcc
JS
2777 if (!value)
2778 maybe_remove_section(&store, contents,
2779 &copy_end,
2780 &replace_end, &i);
6ae996f2
JS
2781 /*
2782 * Swallow preceding white-space on the same
2783 * line.
2784 */
2785 while (copy_end > 0 ) {
2786 char c = contents[copy_end - 1];
2787
2788 if (isspace(c) && c != '\n')
2789 copy_end--;
2790 else
2791 break;
2792 }
2793 }
4ddba79d 2794
02e5ba4a
JK
2795 if (copy_end > 0 && contents[copy_end-1] != '\n')
2796 new_line = 1;
2797
4ddba79d
JS
2798 /* write the first part of the config */
2799 if (copy_end > copy_begin) {
93c1e079 2800 if (write_in_full(fd, contents + copy_begin,
efacf609 2801 copy_end - copy_begin) < 0)
93c1e079
JH
2802 goto write_err_out;
2803 if (new_line &&
06f46f23 2804 write_str_in_full(fd, "\n") < 0)
93c1e079 2805 goto write_err_out;
4ddba79d 2806 }
6ae996f2 2807 copy_begin = replace_end;
10bea152
JS
2808 }
2809
10bea152
JS
2810 /* write the pair (value == NULL means unset) */
2811 if (value != NULL) {
5221c315 2812 if (!store.section_seen) {
fee8572c 2813 if (write_section(fd, key, &store) < 0)
93c1e079 2814 goto write_err_out;
480c9e52 2815 }
fee8572c 2816 if (write_pair(fd, key, value, &store) < 0)
93c1e079 2817 goto write_err_out;
10bea152
JS
2818 }
2819
2820 /* write the rest of the config */
dc49cd76 2821 if (copy_begin < contents_sz)
93c1e079 2822 if (write_in_full(fd, contents + copy_begin,
efacf609 2823 contents_sz - copy_begin) < 0)
93c1e079 2824 goto write_err_out;
7a64592c
KB
2825
2826 munmap(contents, contents_sz);
2827 contents = NULL;
10bea152
JS
2828 }
2829
bfffb48c 2830 if (commit_lock_file(&lock) < 0) {
f0658ec9 2831 error_errno("could not write config file %s", config_filename);
7a397419 2832 ret = CONFIG_NO_WRITE;
dafc88b1 2833 goto out_free;
10bea152
JS
2834 }
2835
dafc88b1
SH
2836 ret = 0;
2837
3c8687a7
TA
2838 /* Invalidate the config cache */
2839 git_config_clear();
2840
dafc88b1 2841out_free:
bfffb48c 2842 rollback_lock_file(&lock);
0a5f5759 2843 free(filename_buf);
3a1b3126
JK
2844 if (contents)
2845 munmap(contents, contents_sz);
54d160ec
SS
2846 if (in_fd >= 0)
2847 close(in_fd);
dafc88b1 2848 return ret;
93c1e079
JH
2849
2850write_err_out:
bfffb48c 2851 ret = write_error(get_lock_file_path(&lock));
93c1e079
JH
2852 goto out_free;
2853
10bea152
JS
2854}
2855
3d180648
PS
2856void git_config_set_multivar_in_file(const char *config_filename,
2857 const char *key, const char *value,
2858 const char *value_regex, int multi_replace)
b4c8aba6 2859{
1cae428e
JK
2860 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2861 value_regex, multi_replace))
2862 return;
2863 if (value)
8c3ca351 2864 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2865 else
2866 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2867}
2868
30598ad0
PS
2869int git_config_set_multivar_gently(const char *key, const char *value,
2870 const char *value_regex, int multi_replace)
5ec31182 2871{
30598ad0
PS
2872 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2873 multi_replace);
5ec31182
RR
2874}
2875
3d180648
PS
2876void git_config_set_multivar(const char *key, const char *value,
2877 const char *value_regex, int multi_replace)
5ec31182 2878{
3d180648
PS
2879 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2880 multi_replace);
5ec31182
RR
2881}
2882
118f8b24
PB
2883static int section_name_match (const char *buf, const char *name)
2884{
2885 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2886 if (buf[i] != '[')
2887 return 0;
2888 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2889 if (!dot && isspace(buf[i])) {
2890 dot = 1;
2891 if (name[j++] != '.')
2892 break;
2893 for (i++; isspace(buf[i]); i++)
2894 ; /* do nothing */
2895 if (buf[i] != '"')
2896 break;
2897 continue;
2898 }
2899 if (buf[i] == '\\' && dot)
2900 i++;
2901 else if (buf[i] == '"' && dot) {
2902 for (i++; isspace(buf[i]); i++)
2903 ; /* do_nothing */
2904 break;
2905 }
2906 if (buf[i] != name[j++])
2907 break;
2908 }
a4c0d463
AV
2909 if (buf[i] == ']' && name[j] == 0) {
2910 /*
2911 * We match, now just find the right length offset by
2912 * gobbling up any whitespace after it, as well
2913 */
2914 i++;
2915 for (; buf[i] && isspace(buf[i]); i++)
2916 ; /* do nothing */
2917 return i;
2918 }
2919 return 0;
118f8b24
PB
2920}
2921
94a35b1a
JK
2922static int section_name_is_ok(const char *name)
2923{
2924 /* Empty section names are bogus. */
2925 if (!*name)
2926 return 0;
2927
2928 /*
2929 * Before a dot, we must be alphanumeric or dash. After the first dot,
2930 * anything goes, so we can stop checking.
2931 */
2932 for (; *name && *name != '.'; name++)
2933 if (*name != '-' && !isalnum(*name))
2934 return 0;
2935 return 1;
2936}
2937
118f8b24 2938/* if new_name == NULL, the section is removed instead */
52d59cc6 2939static int git_config_copy_or_rename_section_in_file(const char *config_filename,
fee8572c
JS
2940 const char *old_name,
2941 const char *new_name, int copy)
0667fcfb 2942{
118f8b24 2943 int ret = 0, remove = 0;
42bd39b5 2944 char *filename_buf = NULL;
837e34eb 2945 struct lock_file lock = LOCK_INIT;
0667fcfb
JS
2946 int out_fd;
2947 char buf[1024];
4db7dbdb 2948 FILE *config_file = NULL;
daa22c6f 2949 struct stat st;
52d59cc6 2950 struct strbuf copystr = STRBUF_INIT;
fee8572c
JS
2951 struct config_store_data store;
2952
2953 memset(&store, 0, sizeof(store));
0667fcfb 2954
94a35b1a
JK
2955 if (new_name && !section_name_is_ok(new_name)) {
2956 ret = error("invalid section name: %s", new_name);
c06fa62d 2957 goto out_no_rollback;
94a35b1a
JK
2958 }
2959
42bd39b5
JK
2960 if (!config_filename)
2961 config_filename = filename_buf = git_pathdup("config");
2962
837e34eb 2963 out_fd = hold_lock_file_for_update(&lock, config_filename, 0);
fc1905bb 2964 if (out_fd < 0) {
64c0d71c 2965 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
2966 goto out;
2967 }
0667fcfb 2968
fc1905bb 2969 if (!(config_file = fopen(config_filename, "rb"))) {
11dc1fcb
NTND
2970 ret = warn_on_fopen_errors(config_filename);
2971 if (ret)
2972 goto out;
01ebb9dc 2973 /* no config file means nothing to rename, no error */
6e45b43f 2974 goto commit_and_out;
fc1905bb 2975 }
0667fcfb 2976
29647d79
NTND
2977 if (fstat(fileno(config_file), &st) == -1) {
2978 ret = error_errno(_("fstat on %s failed"), config_filename);
2979 goto out;
2980 }
daa22c6f 2981
837e34eb 2982 if (chmod(get_lock_file_path(&lock), st.st_mode & 07777) < 0) {
f0658ec9 2983 ret = error_errno("chmod on %s failed",
837e34eb 2984 get_lock_file_path(&lock));
daa22c6f
EW
2985 goto out;
2986 }
2987
0667fcfb
JS
2988 while (fgets(buf, sizeof(buf), config_file)) {
2989 int i;
480c9e52 2990 int length;
52d59cc6 2991 int is_section = 0;
9a5abfc7 2992 char *output = buf;
0667fcfb
JS
2993 for (i = 0; buf[i] && isspace(buf[i]); i++)
2994 ; /* do nothing */
2995 if (buf[i] == '[') {
2996 /* it's a section */
52d59cc6
SD
2997 int offset;
2998 is_section = 1;
2999
3000 /*
3001 * When encountering a new section under -c we
3002 * need to flush out any section we're already
3003 * coping and begin anew. There might be
3004 * multiple [branch "$name"] sections.
3005 */
3006 if (copystr.len > 0) {
c5e3bc6e 3007 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
0b646bca 3008 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3009 goto out;
3010 }
3011 strbuf_reset(&copystr);
3012 }
3013
3014 offset = section_name_match(&buf[i], old_name);
a4c0d463 3015 if (offset > 0) {
118f8b24
PB
3016 ret++;
3017 if (new_name == NULL) {
3018 remove = 1;
0667fcfb
JS
3019 continue;
3020 }
0667fcfb 3021 store.baselen = strlen(new_name);
52d59cc6 3022 if (!copy) {
fee8572c 3023 if (write_section(out_fd, new_name, &store) < 0) {
0b646bca 3024 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3025 goto out;
3026 }
9a5abfc7 3027 /*
52d59cc6
SD
3028 * We wrote out the new section, with
3029 * a newline, now skip the old
3030 * section's length
9a5abfc7 3031 */
52d59cc6
SD
3032 output += offset + i;
3033 if (strlen(output) > 0) {
3034 /*
3035 * More content means there's
3036 * a declaration to put on the
3037 * next line; indent with a
3038 * tab
3039 */
3040 output -= 1;
3041 output[0] = '\t';
3042 }
3043 } else {
fee8572c 3044 copystr = store_create_section(new_name, &store);
9a5abfc7 3045 }
0667fcfb 3046 }
118f8b24 3047 remove = 0;
0667fcfb 3048 }
118f8b24
PB
3049 if (remove)
3050 continue;
9a5abfc7 3051 length = strlen(output);
52d59cc6
SD
3052
3053 if (!is_section && copystr.len > 0) {
3054 strbuf_add(&copystr, output, length);
3055 }
3056
06f46f23 3057 if (write_in_full(out_fd, output, length) < 0) {
837e34eb 3058 ret = write_error(get_lock_file_path(&lock));
480c9e52
AW
3059 goto out;
3060 }
0667fcfb 3061 }
52d59cc6
SD
3062
3063 /*
3064 * Copy a trailing section at the end of the config, won't be
3065 * flushed by the usual "flush because we have a new section
3066 * logic in the loop above.
3067 */
3068 if (copystr.len > 0) {
c5e3bc6e 3069 if (write_in_full(out_fd, copystr.buf, copystr.len) < 0) {
0b646bca 3070 ret = write_error(get_lock_file_path(&lock));
52d59cc6
SD
3071 goto out;
3072 }
3073 strbuf_reset(&copystr);
3074 }
3075
fc1905bb 3076 fclose(config_file);
4db7dbdb 3077 config_file = NULL;
6e45b43f 3078commit_and_out:
837e34eb 3079 if (commit_lock_file(&lock) < 0)
f0658ec9
NTND
3080 ret = error_errno("could not write config file %s",
3081 config_filename);
8b590075 3082out:
4db7dbdb
JS
3083 if (config_file)
3084 fclose(config_file);
837e34eb 3085 rollback_lock_file(&lock);
c06fa62d 3086out_no_rollback:
42bd39b5 3087 free(filename_buf);
0667fcfb
JS
3088 return ret;
3089}
40ea4ed9 3090
52d59cc6
SD
3091int git_config_rename_section_in_file(const char *config_filename,
3092 const char *old_name, const char *new_name)
3093{
3094 return git_config_copy_or_rename_section_in_file(config_filename,
3095 old_name, new_name, 0);
3096}
3097
42bd39b5
JK
3098int git_config_rename_section(const char *old_name, const char *new_name)
3099{
4a7bb5ba 3100 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
3101}
3102
52d59cc6
SD
3103int git_config_copy_section_in_file(const char *config_filename,
3104 const char *old_name, const char *new_name)
3105{
3106 return git_config_copy_or_rename_section_in_file(config_filename,
3107 old_name, new_name, 1);
3108}
3109
3110int git_config_copy_section(const char *old_name, const char *new_name)
3111{
3112 return git_config_copy_section_in_file(NULL, old_name, new_name);
3113}
3114
40ea4ed9
JH
3115/*
3116 * Call this to report error for your variable that should not
3117 * get a boolean value (i.e. "[my] var" means "true").
3118 */
a469a101 3119#undef config_error_nonbool
40ea4ed9
JH
3120int config_error_nonbool(const char *var)
3121{
8c3ca351 3122 return error("missing value for '%s'", var);
40ea4ed9 3123}
1b86bbb0
JK
3124
3125int parse_config_key(const char *var,
3126 const char *section,
3127 const char **subsection, int *subsection_len,
3128 const char **key)
3129{
1b86bbb0
JK
3130 const char *dot;
3131
3132 /* Does it start with "section." ? */
e3394fdc 3133 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
3134 return -1;
3135
3136 /*
3137 * Find the key; we don't know yet if we have a subsection, but we must
3138 * parse backwards from the end, since the subsection may have dots in
3139 * it, too.
3140 */
3141 dot = strrchr(var, '.');
3142 *key = dot + 1;
3143
3144 /* Did we have a subsection at all? */
e3394fdc 3145 if (dot == var) {
48f8d9f7
JK
3146 if (subsection) {
3147 *subsection = NULL;
3148 *subsection_len = 0;
3149 }
1b86bbb0
JK
3150 }
3151 else {
48f8d9f7
JK
3152 if (!subsection)
3153 return -1;
e3394fdc 3154 *subsection = var + 1;
1b86bbb0
JK
3155 *subsection_len = dot - *subsection;
3156 }
3157
3158 return 0;
3159}
473166b9
LS
3160
3161const char *current_config_origin_type(void)
3162{
1b8132d9 3163 int type;
0d44a2da
JK
3164 if (current_config_kvi)
3165 type = current_config_kvi->origin_type;
3166 else if(cf)
3167 type = cf->origin_type;
3168 else
3258258f 3169 die("BUG: current_config_origin_type called outside config callback");
1b8132d9
VA
3170
3171 switch (type) {
3172 case CONFIG_ORIGIN_BLOB:
3173 return "blob";
3174 case CONFIG_ORIGIN_FILE:
3175 return "file";
3176 case CONFIG_ORIGIN_STDIN:
3177 return "standard input";
3178 case CONFIG_ORIGIN_SUBMODULE_BLOB:
3179 return "submodule-blob";
3180 case CONFIG_ORIGIN_CMDLINE:
3181 return "command line";
3182 default:
3183 die("BUG: unknown config origin type");
3184 }
473166b9
LS
3185}
3186
3187const char *current_config_name(void)
3188{
0d44a2da
JK
3189 const char *name;
3190 if (current_config_kvi)
3191 name = current_config_kvi->filename;
3192 else if (cf)
3193 name = cf->name;
3194 else
3258258f 3195 die("BUG: current_config_name called outside config callback");
0d44a2da 3196 return name ? name : "";
473166b9 3197}
9acc5911
JK
3198
3199enum config_scope current_config_scope(void)
3200{
3201 if (current_config_kvi)
3202 return current_config_kvi->scope;
3203 else
3204 return current_parsing_scope;
473166b9 3205}