config: handle conditional include when $GIT_DIR is not set up
[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"
697cc8ef 9#include "lockfile.h"
7f0e39fa 10#include "exec_cmd.h"
572e4f6a 11#include "strbuf.h"
2b64fc89 12#include "quote.h"
3c8687a7
TA
13#include "hashmap.h"
14#include "string-list.h"
599446dc 15#include "utf8.h"
3efd0bed 16#include "dir.h"
17712991 17
4d8dd149
HV
18struct config_source {
19 struct config_source *prev;
20 union {
21 FILE *file;
1bc88819
HV
22 struct config_buf {
23 const char *buf;
24 size_t len;
25 size_t pos;
26 } buf;
4d8dd149 27 } u;
1b8132d9 28 enum config_origin_type origin_type;
924aaf3e 29 const char *name;
d14d4244 30 const char *path;
b2dc0945 31 int die_on_error;
924aaf3e
RJ
32 int linenr;
33 int eof;
34 struct strbuf value;
0971e992 35 struct strbuf var;
924aaf3e 36
49d6cfa5
JK
37 int (*do_fgetc)(struct config_source *c);
38 int (*do_ungetc)(int c, struct config_source *conf);
39 long (*do_ftell)(struct config_source *c);
4d8dd149
HV
40};
41
0d44a2da
JK
42/*
43 * These variables record the "current" config source, which
44 * can be accessed by parsing callbacks.
45 *
46 * The "cf" variable will be non-NULL only when we are actually parsing a real
47 * config source (file, blob, cmdline, etc).
48 *
49 * The "current_config_kvi" variable will be non-NULL only when we are feeding
50 * cached config from a configset into a callback.
51 *
52 * They should generally never be non-NULL at the same time. If they are both
53 * NULL, then we aren't parsing anything (and depending on the function looking
54 * at the variables, it's either a bug for it to be called in the first place,
55 * or it's a function which can be reused for non-config purposes, and should
56 * fall back to some sane behavior).
57 */
4d8dd149 58static struct config_source *cf;
0d44a2da 59static struct key_value_info *current_config_kvi;
924aaf3e 60
9acc5911
JK
61/*
62 * Similar to the variables above, this gives access to the "scope" of the
63 * current value (repo, global, etc). For cached values, it can be found via
64 * the current_config_kvi as above. During parsing, the current value can be
65 * found in this variable. It's not part of "cf" because it transcends a single
66 * file (i.e., a file included from .git/config is still in "repo" scope).
67 */
68static enum config_scope current_parsing_scope;
924aaf3e 69
8de7eeb5
JH
70static int core_compression_seen;
71static int pack_compression_seen;
960ccca6
DH
72static int zlib_compression_seen;
73
3c8687a7
TA
74/*
75 * Default config_set that contains key-value pairs from the usual set of config
76 * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
77 * config file and the global /etc/gitconfig)
78 */
79static struct config_set the_config_set;
80
4d8dd149
HV
81static int config_file_fgetc(struct config_source *conf)
82{
260d408e 83 return getc_unlocked(conf->u.file);
4d8dd149
HV
84}
85
86static int config_file_ungetc(int c, struct config_source *conf)
87{
88 return ungetc(c, conf->u.file);
89}
90
91static long config_file_ftell(struct config_source *conf)
92{
93 return ftell(conf->u.file);
94}
95
1bc88819
HV
96
97static int config_buf_fgetc(struct config_source *conf)
98{
99 if (conf->u.buf.pos < conf->u.buf.len)
100 return conf->u.buf.buf[conf->u.buf.pos++];
101
102 return EOF;
103}
104
105static int config_buf_ungetc(int c, struct config_source *conf)
106{
1d0655c1
JK
107 if (conf->u.buf.pos > 0) {
108 conf->u.buf.pos--;
109 if (conf->u.buf.buf[conf->u.buf.pos] != c)
110 die("BUG: config_buf can only ungetc the same character");
111 return c;
112 }
1bc88819
HV
113
114 return EOF;
115}
116
117static long config_buf_ftell(struct config_source *conf)
118{
119 return conf->u.buf.pos;
120}
121
9b25a0b5
JK
122#define MAX_INCLUDE_DEPTH 10
123static const char include_depth_advice[] =
124"exceeded maximum include depth (%d) while including\n"
125" %s\n"
126"from\n"
127" %s\n"
128"Do you have circular includes?";
129static int handle_path_include(const char *path, struct config_include_data *inc)
130{
131 int ret = 0;
132 struct strbuf buf = STRBUF_INIT;
67beb600 133 char *expanded;
4c0a89fc 134
67beb600
JK
135 if (!path)
136 return config_error_nonbool("include.path");
137
138 expanded = expand_user_path(path);
4c0a89fc 139 if (!expanded)
8c3ca351 140 return error("could not expand include path '%s'", path);
4c0a89fc 141 path = expanded;
9b25a0b5
JK
142
143 /*
144 * Use an absolute path as-is, but interpret relative paths
145 * based on the including config file.
146 */
147 if (!is_absolute_path(path)) {
148 char *slash;
149
d14d4244 150 if (!cf || !cf->path)
9b25a0b5
JK
151 return error("relative config includes must come from files");
152
d14d4244 153 slash = find_last_dir_sep(cf->path);
9b25a0b5 154 if (slash)
d14d4244 155 strbuf_add(&buf, cf->path, slash - cf->path + 1);
9b25a0b5
JK
156 strbuf_addstr(&buf, path);
157 path = buf.buf;
158 }
159
4698c8fe 160 if (!access_or_die(path, R_OK, 0)) {
9b25a0b5
JK
161 if (++inc->depth > MAX_INCLUDE_DEPTH)
162 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
3258258f
JK
163 !cf ? "<unknown>" :
164 cf->name ? cf->name :
165 "the command line");
9b25a0b5
JK
166 ret = git_config_from_file(git_config_include, path, inc);
167 inc->depth--;
168 }
169 strbuf_release(&buf);
4c0a89fc 170 free(expanded);
9b25a0b5
JK
171 return ret;
172}
173
3efd0bed
NTND
174static int prepare_include_condition_pattern(struct strbuf *pat)
175{
176 struct strbuf path = STRBUF_INIT;
177 char *expanded;
178 int prefix = 0;
179
180 expanded = expand_user_path(pat->buf);
181 if (expanded) {
182 strbuf_reset(pat);
183 strbuf_addstr(pat, expanded);
184 free(expanded);
185 }
186
187 if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
188 const char *slash;
189
190 if (!cf || !cf->path)
191 return error(_("relative config include "
192 "conditionals must come from files"));
193
194 strbuf_add_absolute_path(&path, cf->path);
195 slash = find_last_dir_sep(path.buf);
196 if (!slash)
197 die("BUG: how is this possible?");
198 strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
199 prefix = slash - path.buf + 1 /* slash */;
200 } else if (!is_absolute_path(pat->buf))
201 strbuf_insert(pat, 0, "**/", 3);
202
203 if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
204 strbuf_addstr(pat, "**");
205
206 strbuf_release(&path);
207 return prefix;
208}
209
2185fde5
NTND
210static int include_by_gitdir(const struct config_options *opts,
211 const char *cond, size_t cond_len, int icase)
3efd0bed
NTND
212{
213 struct strbuf text = STRBUF_INIT;
214 struct strbuf pattern = STRBUF_INIT;
215 int ret = 0, prefix;
2185fde5 216 const char *git_dir;
3efd0bed 217
2185fde5
NTND
218 if (opts->git_dir)
219 git_dir = opts->git_dir;
220 else if (have_git_dir())
221 git_dir = get_git_dir();
222 else
223 goto done;
224
225 strbuf_add_absolute_path(&text, git_dir);
3efd0bed
NTND
226 strbuf_add(&pattern, cond, cond_len);
227 prefix = prepare_include_condition_pattern(&pattern);
228
229 if (prefix < 0)
230 goto done;
231
232 if (prefix > 0) {
233 /*
234 * perform literal matching on the prefix part so that
235 * any wildcard character in it can't create side effects.
236 */
237 if (text.len < prefix)
238 goto done;
239 if (!icase && strncmp(pattern.buf, text.buf, prefix))
240 goto done;
241 if (icase && strncasecmp(pattern.buf, text.buf, prefix))
242 goto done;
243 }
244
245 ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
246 icase ? WM_CASEFOLD : 0, NULL);
247
248done:
249 strbuf_release(&pattern);
250 strbuf_release(&text);
251 return ret;
252}
253
2185fde5
NTND
254static int include_condition_is_true(const struct config_options *opts,
255 const char *cond, size_t cond_len)
3efd0bed
NTND
256{
257
258 if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
2185fde5 259 return include_by_gitdir(opts, cond, cond_len, 0);
3efd0bed 260 else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
2185fde5 261 return include_by_gitdir(opts, cond, cond_len, 1);
3efd0bed
NTND
262
263 /* unknown conditionals are always false */
264 return 0;
265}
266
9b25a0b5
JK
267int git_config_include(const char *var, const char *value, void *data)
268{
269 struct config_include_data *inc = data;
3efd0bed
NTND
270 const char *cond, *key;
271 int cond_len;
9b25a0b5
JK
272 int ret;
273
274 /*
275 * Pass along all values, including "include" directives; this makes it
276 * possible to query information on the includes themselves.
277 */
278 ret = inc->fn(var, value, inc->data);
279 if (ret < 0)
280 return ret;
281
37007c3a 282 if (!strcmp(var, "include.path"))
9b25a0b5 283 ret = handle_path_include(value, inc);
3efd0bed
NTND
284
285 if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
2185fde5 286 (cond && include_condition_is_true(inc->opts, cond, cond_len)) &&
3efd0bed
NTND
287 !strcmp(key, "path"))
288 ret = handle_path_include(value, inc);
289
9b25a0b5
JK
290 return ret;
291}
292
2b64fc89
JK
293void git_config_push_parameter(const char *text)
294{
295 struct strbuf env = STRBUF_INIT;
296 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
d1f88498 297 if (old && *old) {
2b64fc89
JK
298 strbuf_addstr(&env, old);
299 strbuf_addch(&env, ' ');
300 }
301 sq_quote_buf(&env, text);
302 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
303 strbuf_release(&env);
304}
305
ee98df3f
JH
306static inline int iskeychar(int c)
307{
308 return isalnum(c) || c == '-';
309}
310
311/*
312 * Auxiliary function to sanity-check and split the key into the section
313 * identifier and variable name.
314 *
315 * Returns 0 on success, -1 when there is an invalid character in the key and
316 * -2 if there is no section name in the key.
317 *
318 * store_key - pointer to char* which will hold a copy of the key with
319 * lowercase section and variable name
320 * baselen - pointer to int which will hold the length of the
321 * section + subsection part, can be NULL
322 */
323static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
324{
325 int i, dot, baselen;
326 const char *last_dot = strrchr(key, '.');
327
328 /*
329 * Since "key" actually contains the section name and the real
330 * key name separated by a dot, we have to know where the dot is.
331 */
332
333 if (last_dot == NULL || last_dot == key) {
334 if (!quiet)
335 error("key does not contain a section: %s", key);
336 return -CONFIG_NO_SECTION_OR_NAME;
337 }
338
339 if (!last_dot[1]) {
340 if (!quiet)
341 error("key does not contain variable name: %s", key);
342 return -CONFIG_NO_SECTION_OR_NAME;
343 }
344
345 baselen = last_dot - key;
346 if (baselen_)
347 *baselen_ = baselen;
348
349 /*
350 * Validate the key and while at it, lower case it for matching.
351 */
352 if (store_key)
353 *store_key = xmallocz(strlen(key));
354
355 dot = 0;
356 for (i = 0; key[i]; i++) {
357 unsigned char c = key[i];
358 if (c == '.')
359 dot = 1;
360 /* Leave the extended basename untouched.. */
361 if (!dot || i > baselen) {
362 if (!iskeychar(c) ||
363 (i == baselen + 1 && !isalpha(c))) {
364 if (!quiet)
365 error("invalid key: %s", key);
366 goto out_free_ret_1;
367 }
368 c = tolower(c);
369 } else if (c == '\n') {
370 if (!quiet)
371 error("invalid key (newline): %s", key);
372 goto out_free_ret_1;
373 }
374 if (store_key)
375 (*store_key)[i] = c;
376 }
377
378 return 0;
379
380out_free_ret_1:
381 if (store_key) {
382 free(*store_key);
383 *store_key = NULL;
384 }
385 return -CONFIG_INVALID_KEY;
386}
387
388int git_config_parse_key(const char *key, char **store_key, int *baselen)
389{
390 return git_config_parse_key_1(key, store_key, baselen, 0);
391}
392
393int git_config_key_is_valid(const char *key)
394{
395 return !git_config_parse_key_1(key, NULL, NULL, 1);
396}
397
2496844b
JK
398int git_config_parse_parameter(const char *text,
399 config_fn_t fn, void *data)
8b1fa778 400{
a789ca70 401 const char *value;
1274a155 402 char *canonical_name;
572e4f6a 403 struct strbuf **pair;
1274a155 404 int ret;
a789ca70 405
f77bccae 406 pair = strbuf_split_str(text, '=', 2);
c5d6350b
JK
407 if (!pair[0])
408 return error("bogus config parameter: %s", text);
a789ca70
JH
409
410 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
572e4f6a 411 strbuf_setlen(pair[0], pair[0]->len - 1);
a789ca70
JH
412 value = pair[1] ? pair[1]->buf : "";
413 } else {
414 value = NULL;
415 }
416
572e4f6a
AR
417 strbuf_trim(pair[0]);
418 if (!pair[0]->len) {
419 strbuf_list_free(pair);
06eb708f 420 return error("bogus config parameter: %s", text);
8b1fa778 421 }
1274a155
JH
422
423 if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
424 ret = -1;
425 } else {
426 ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
427 free(canonical_name);
572e4f6a
AR
428 }
429 strbuf_list_free(pair);
1274a155 430 return ret;
8b1fa778
AR
431}
432
06eb708f
JK
433int git_config_from_parameters(config_fn_t fn, void *data)
434{
2b64fc89 435 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
a77d6db6 436 int ret = 0;
2b64fc89
JK
437 char *envw;
438 const char **argv = NULL;
439 int nr = 0, alloc = 0;
440 int i;
3258258f 441 struct config_source source;
2b64fc89
JK
442
443 if (!env)
444 return 0;
3258258f
JK
445
446 memset(&source, 0, sizeof(source));
447 source.prev = cf;
1b8132d9 448 source.origin_type = CONFIG_ORIGIN_CMDLINE;
3258258f
JK
449 cf = &source;
450
2b64fc89
JK
451 /* sq_dequote will write over it */
452 envw = xstrdup(env);
453
454 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
a77d6db6
JK
455 ret = error("bogus format in " CONFIG_DATA_ENVIRONMENT);
456 goto out;
2b64fc89
JK
457 }
458
459 for (i = 0; i < nr; i++) {
06eb708f 460 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
a77d6db6
JK
461 ret = -1;
462 goto out;
2b64fc89
JK
463 }
464 }
465
a77d6db6 466out:
2b64fc89
JK
467 free(argv);
468 free(envw);
3258258f 469 cf = source.prev;
a77d6db6 470 return ret;
2b64fc89
JK
471}
472
17712991
LT
473static int get_next_char(void)
474{
49d6cfa5 475 int c = cf->do_fgetc(cf);
17712991 476
dbb9a812
HV
477 if (c == '\r') {
478 /* DOS like systems */
49d6cfa5 479 c = cf->do_fgetc(cf);
dbb9a812 480 if (c != '\n') {
5e0be134
JK
481 if (c != EOF)
482 cf->do_ungetc(c, cf);
dbb9a812 483 c = '\r';
17712991
LT
484 }
485 }
dbb9a812
HV
486 if (c == '\n')
487 cf->linenr++;
488 if (c == EOF) {
489 cf->eof = 1;
b3b3f60b 490 cf->linenr++;
dbb9a812
HV
491 c = '\n';
492 }
17712991
LT
493 return c;
494}
495
496static char *parse_value(void)
497{
e96c19c5 498 int quote = 0, comment = 0, space = 0;
17712991 499
924aaf3e 500 strbuf_reset(&cf->value);
17712991
LT
501 for (;;) {
502 int c = get_next_char();
17712991 503 if (c == '\n') {
4b340593
MS
504 if (quote) {
505 cf->linenr--;
17712991 506 return NULL;
4b340593 507 }
924aaf3e 508 return cf->value.buf;
17712991
LT
509 }
510 if (comment)
511 continue;
512 if (isspace(c) && !quote) {
924aaf3e 513 if (cf->value.len)
ebdaae37 514 space++;
17712991
LT
515 continue;
516 }
7ebdba61
JS
517 if (!quote) {
518 if (c == ';' || c == '#') {
519 comment = 1;
520 continue;
521 }
522 }
ebdaae37 523 for (; space; space--)
924aaf3e 524 strbuf_addch(&cf->value, ' ');
17712991
LT
525 if (c == '\\') {
526 c = get_next_char();
527 switch (c) {
528 case '\n':
529 continue;
530 case 't':
531 c = '\t';
532 break;
533 case 'b':
534 c = '\b';
535 break;
536 case 'n':
537 c = '\n';
538 break;
5cbb401d
LT
539 /* Some characters escape as themselves */
540 case '\\': case '"':
541 break;
542 /* Reject unknown escape sequences */
543 default:
544 return NULL;
17712991 545 }
924aaf3e 546 strbuf_addch(&cf->value, c);
17712991
LT
547 continue;
548 }
549 if (c == '"') {
550 quote = 1-quote;
551 continue;
552 }
924aaf3e 553 strbuf_addch(&cf->value, c);
17712991
LT
554 }
555}
556
0971e992 557static int get_value(config_fn_t fn, void *data, struct strbuf *name)
17712991
LT
558{
559 int c;
560 char *value;
b3b3f60b 561 int ret;
17712991
LT
562
563 /* Get the full name */
564 for (;;) {
565 c = get_next_char();
924aaf3e 566 if (cf->eof)
17712991 567 break;
38c5afa8 568 if (!iskeychar(c))
17712991 569 break;
0971e992 570 strbuf_addch(name, tolower(c));
17712991 571 }
0971e992 572
17712991
LT
573 while (c == ' ' || c == '\t')
574 c = get_next_char();
575
576 value = NULL;
577 if (c != '\n') {
578 if (c != '=')
579 return -1;
580 value = parse_value();
581 if (!value)
582 return -1;
583 }
b3b3f60b
MM
584 /*
585 * We already consumed the \n, but we need linenr to point to
586 * the line we just parsed during the call to fn to get
587 * accurate line number in error messages.
588 */
589 cf->linenr--;
590 ret = fn(name->buf, value, data);
591 cf->linenr++;
592 return ret;
17712991
LT
593}
594
0971e992 595static int get_extended_base_var(struct strbuf *name, int c)
d14f7764
LT
596{
597 do {
598 if (c == '\n')
4b340593 599 goto error_incomplete_line;
d14f7764
LT
600 c = get_next_char();
601 } while (isspace(c));
602
603 /* We require the format to be '[base "extension"]' */
604 if (c != '"')
605 return -1;
0971e992 606 strbuf_addch(name, '.');
d14f7764
LT
607
608 for (;;) {
609 int c = get_next_char();
610 if (c == '\n')
4b340593 611 goto error_incomplete_line;
d14f7764
LT
612 if (c == '"')
613 break;
614 if (c == '\\') {
615 c = get_next_char();
616 if (c == '\n')
4b340593 617 goto error_incomplete_line;
d14f7764 618 }
0971e992 619 strbuf_addch(name, c);
d14f7764
LT
620 }
621
622 /* Final ']' */
623 if (get_next_char() != ']')
624 return -1;
0971e992 625 return 0;
4b340593
MS
626error_incomplete_line:
627 cf->linenr--;
628 return -1;
d14f7764
LT
629}
630
0971e992 631static int get_base_var(struct strbuf *name)
17712991 632{
17712991
LT
633 for (;;) {
634 int c = get_next_char();
924aaf3e 635 if (cf->eof)
17712991
LT
636 return -1;
637 if (c == ']')
0971e992 638 return 0;
d14f7764 639 if (isspace(c))
0971e992 640 return get_extended_base_var(name, c);
38c5afa8 641 if (!iskeychar(c) && c != '.')
17712991 642 return -1;
0971e992 643 strbuf_addch(name, tolower(c));
17712991
LT
644 }
645}
646
4d8dd149 647static int git_parse_source(config_fn_t fn, void *data)
17712991
LT
648{
649 int comment = 0;
650 int baselen = 0;
0971e992 651 struct strbuf *var = &cf->var;
1b8132d9
VA
652 int error_return = 0;
653 char *error_msg = NULL;
17712991 654
de056402 655 /* U+FEFF Byte Order Mark in UTF8 */
599446dc 656 const char *bomptr = utf8_bom;
de056402 657
17712991
LT
658 for (;;) {
659 int c = get_next_char();
de056402
PB
660 if (bomptr && *bomptr) {
661 /* We are at the file beginning; skip UTF8-encoded BOM
662 * if present. Sane editors won't put this in on their
663 * own, but e.g. Windows Notepad will do it happily. */
599446dc 664 if (c == (*bomptr & 0377)) {
de056402
PB
665 bomptr++;
666 continue;
667 } else {
668 /* Do not tolerate partial BOM. */
669 if (bomptr != utf8_bom)
670 break;
671 /* No BOM at file beginning. Cool. */
672 bomptr = NULL;
673 }
674 }
17712991 675 if (c == '\n') {
924aaf3e 676 if (cf->eof)
17712991
LT
677 return 0;
678 comment = 0;
679 continue;
680 }
681 if (comment || isspace(c))
682 continue;
683 if (c == '#' || c == ';') {
684 comment = 1;
685 continue;
686 }
687 if (c == '[') {
0971e992
BW
688 /* Reset prior to determining a new stem */
689 strbuf_reset(var);
690 if (get_base_var(var) < 0 || var->len < 1)
17712991 691 break;
0971e992
BW
692 strbuf_addch(var, '.');
693 baselen = var->len;
17712991
LT
694 continue;
695 }
696 if (!isalpha(c))
697 break;
0971e992
BW
698 /*
699 * Truncate the var name back to the section header
700 * stem prior to grabbing the suffix part of the name
701 * and the value.
702 */
703 strbuf_setlen(var, baselen);
704 strbuf_addch(var, tolower(c));
705 if (get_value(fn, data, var) < 0)
17712991
LT
706 break;
707 }
1b8132d9
VA
708
709 switch (cf->origin_type) {
710 case CONFIG_ORIGIN_BLOB:
711 error_msg = xstrfmt(_("bad config line %d in blob %s"),
712 cf->linenr, cf->name);
713 break;
714 case CONFIG_ORIGIN_FILE:
715 error_msg = xstrfmt(_("bad config line %d in file %s"),
716 cf->linenr, cf->name);
717 break;
718 case CONFIG_ORIGIN_STDIN:
719 error_msg = xstrfmt(_("bad config line %d in standard input"),
720 cf->linenr);
721 break;
722 case CONFIG_ORIGIN_SUBMODULE_BLOB:
723 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
724 cf->linenr, cf->name);
725 break;
726 case CONFIG_ORIGIN_CMDLINE:
727 error_msg = xstrfmt(_("bad config line %d in command line %s"),
728 cf->linenr, cf->name);
729 break;
730 default:
731 error_msg = xstrfmt(_("bad config line %d in %s"),
732 cf->linenr, cf->name);
733 }
734
b2dc0945 735 if (cf->die_on_error)
1b8132d9 736 die("%s", error_msg);
b2dc0945 737 else
1b8132d9
VA
738 error_return = error("%s", error_msg);
739
740 free(error_msg);
741 return error_return;
17712991
LT
742}
743
ebaa1bd4 744static int parse_unit_factor(const char *end, uintmax_t *val)
0b87b6e0
BD
745{
746 if (!*end)
747 return 1;
c8deb5a1
SP
748 else if (!strcasecmp(end, "k")) {
749 *val *= 1024;
750 return 1;
751 }
752 else if (!strcasecmp(end, "m")) {
753 *val *= 1024 * 1024;
754 return 1;
755 }
756 else if (!strcasecmp(end, "g")) {
757 *val *= 1024 * 1024 * 1024;
758 return 1;
759 }
760 return 0;
0b87b6e0
BD
761}
762
7192777d 763static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
0b87b6e0
BD
764{
765 if (value && *value) {
766 char *end;
ebaa1bd4
NA
767 intmax_t val;
768 uintmax_t uval;
769 uintmax_t factor = 1;
770
771 errno = 0;
772 val = strtoimax(value, &end, 0);
773 if (errno == ERANGE)
774 return 0;
33fdd77e
JK
775 if (!parse_unit_factor(end, &factor)) {
776 errno = EINVAL;
c8deb5a1 777 return 0;
33fdd77e 778 }
83915ba5 779 uval = labs(val);
ebaa1bd4 780 uval *= factor;
83915ba5 781 if (uval > max || labs(val) > uval) {
33fdd77e 782 errno = ERANGE;
ebaa1bd4 783 return 0;
33fdd77e 784 }
ebaa1bd4
NA
785 val *= factor;
786 *ret = val;
0b87b6e0
BD
787 return 1;
788 }
33fdd77e 789 errno = EINVAL;
0b87b6e0
BD
790 return 0;
791}
792
0b4dc661 793static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
17712991
LT
794{
795 if (value && *value) {
796 char *end;
ebaa1bd4
NA
797 uintmax_t val;
798 uintmax_t oldval;
799
800 errno = 0;
801 val = strtoumax(value, &end, 0);
802 if (errno == ERANGE)
803 return 0;
804 oldval = val;
33fdd77e
JK
805 if (!parse_unit_factor(end, &val)) {
806 errno = EINVAL;
c8deb5a1 807 return 0;
33fdd77e
JK
808 }
809 if (val > max || oldval > val) {
810 errno = ERANGE;
ebaa1bd4 811 return 0;
33fdd77e 812 }
c8deb5a1 813 *ret = val;
0b87b6e0 814 return 1;
17712991 815 }
33fdd77e 816 errno = EINVAL;
0b87b6e0
BD
817 return 0;
818}
819
42d194e9 820static int git_parse_int(const char *value, int *ret)
c1867cea 821{
7192777d 822 intmax_t tmp;
42d194e9 823 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
7192777d
JK
824 return 0;
825 *ret = tmp;
826 return 1;
827}
828
00160242
JK
829static int git_parse_int64(const char *value, int64_t *ret)
830{
831 intmax_t tmp;
832 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
833 return 0;
834 *ret = tmp;
835 return 1;
836}
837
7192777d
JK
838int git_parse_ulong(const char *value, unsigned long *ret)
839{
840 uintmax_t tmp;
841 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
842 return 0;
843 *ret = tmp;
844 return 1;
845}
846
06bdc23b 847NORETURN
2f666581 848static void die_bad_number(const char *name, const char *value)
c1867cea 849{
078fe305
JNA
850 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
851
2f666581
JK
852 if (!value)
853 value = "";
854
1b8132d9 855 if (!(cf && cf->name))
078fe305
JNA
856 die(_("bad numeric config value '%s' for '%s': %s"),
857 value, name, error_type);
1b8132d9
VA
858
859 switch (cf->origin_type) {
860 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
861 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
862 value, name, cf->name, error_type);
1b8132d9 863 case CONFIG_ORIGIN_FILE:
078fe305
JNA
864 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
865 value, name, cf->name, error_type);
1b8132d9 866 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
867 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
868 value, name, error_type);
1b8132d9 869 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
870 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
871 value, name, cf->name, error_type);
1b8132d9 872 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
873 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
874 value, name, cf->name, error_type);
1b8132d9 875 default:
078fe305
JNA
876 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
877 value, name, cf->name, error_type);
1b8132d9 878 }
c1867cea
JK
879}
880
0b87b6e0
BD
881int git_config_int(const char *name, const char *value)
882{
42d194e9
JK
883 int ret;
884 if (!git_parse_int(value, &ret))
2f666581 885 die_bad_number(name, value);
0b87b6e0
BD
886 return ret;
887}
888
00160242
JK
889int64_t git_config_int64(const char *name, const char *value)
890{
891 int64_t ret;
892 if (!git_parse_int64(value, &ret))
893 die_bad_number(name, value);
0b87b6e0
BD
894 return ret;
895}
896
897unsigned long git_config_ulong(const char *name, const char *value)
898{
899 unsigned long ret;
900 if (!git_parse_ulong(value, &ret))
2f666581 901 die_bad_number(name, value);
0b87b6e0 902 return ret;
17712991
LT
903}
904
9a549d43 905int git_parse_maybe_bool(const char *value)
17712991
LT
906{
907 if (!value)
908 return 1;
909 if (!*value)
910 return 0;
8420ccd8
JH
911 if (!strcasecmp(value, "true")
912 || !strcasecmp(value, "yes")
913 || !strcasecmp(value, "on"))
17712991 914 return 1;
8420ccd8
JH
915 if (!strcasecmp(value, "false")
916 || !strcasecmp(value, "no")
917 || !strcasecmp(value, "off"))
17712991 918 return 0;
8420ccd8
JH
919 return -1;
920}
921
b2be2f6a
JK
922int git_config_maybe_bool(const char *name, const char *value)
923{
9a549d43 924 int v = git_parse_maybe_bool(value);
b2be2f6a
JK
925 if (0 <= v)
926 return v;
42d194e9 927 if (git_parse_int(value, &v))
db6195ef 928 return !!v;
b2be2f6a
JK
929 return -1;
930}
931
8420ccd8
JH
932int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
933{
9a549d43 934 int v = git_parse_maybe_bool(value);
8420ccd8
JH
935 if (0 <= v) {
936 *is_bool = 1;
937 return v;
938 }
a53f2ec6 939 *is_bool = 0;
c35b0b58 940 return git_config_int(name, value);
17712991
LT
941}
942
a53f2ec6
JH
943int git_config_bool(const char *name, const char *value)
944{
945 int discard;
c35b0b58 946 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
947}
948
ea5105a5
CC
949int git_config_string(const char **dest, const char *var, const char *value)
950{
951 if (!value)
952 return config_error_nonbool(var);
953 *dest = xstrdup(value);
954 return 0;
955}
956
395de250
MM
957int git_config_pathname(const char **dest, const char *var, const char *value)
958{
959 if (!value)
960 return config_error_nonbool(var);
961 *dest = expand_user_path(value);
962 if (!*dest)
8262aaa2 963 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
964 return 0;
965}
966
806e2ad7 967static int git_default_core_config(const char *var, const char *value)
17712991
LT
968{
969 /* This needs a better name */
970 if (!strcmp(var, "core.filemode")) {
971 trust_executable_bit = git_config_bool(var, value);
972 return 0;
973 }
1ce4790b
AR
974 if (!strcmp(var, "core.trustctime")) {
975 trust_ctime = git_config_bool(var, value);
976 return 0;
977 }
c1b5d738 978 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
979 if (!strcasecmp(value, "default"))
980 check_stat = 1;
981 else if (!strcasecmp(value, "minimal"))
982 check_stat = 0;
983 }
17712991 984
9378c161
JH
985 if (!strcmp(var, "core.quotepath")) {
986 quote_path_fully = git_config_bool(var, value);
987 return 0;
988 }
989
78a8d641
JS
990 if (!strcmp(var, "core.symlinks")) {
991 has_symlinks = git_config_bool(var, value);
992 return 0;
993 }
994
0a9b88b7
LT
995 if (!strcmp(var, "core.ignorecase")) {
996 ignore_case = git_config_bool(var, value);
997 return 0;
998 }
999
64589a03
JH
1000 if (!strcmp(var, "core.attributesfile"))
1001 return git_config_pathname(&git_attributes_file, var, value);
1002
867ad08a
ÆAB
1003 if (!strcmp(var, "core.hookspath"))
1004 return git_config_pathname(&git_hooks_path, var, value);
1005
7d1864ce
JH
1006 if (!strcmp(var, "core.bare")) {
1007 is_bare_repository_cfg = git_config_bool(var, value);
1008 return 0;
1009 }
1010
5f73076c
JH
1011 if (!strcmp(var, "core.ignorestat")) {
1012 assume_unchanged = git_config_bool(var, value);
1013 return 0;
1014 }
1015
e388c738
JH
1016 if (!strcmp(var, "core.prefersymlinkrefs")) {
1017 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
1018 return 0;
1019 }
1020
6de08ae6 1021 if (!strcmp(var, "core.logallrefupdates")) {
341fb286
CW
1022 if (value && !strcasecmp(value, "always"))
1023 log_all_ref_updates = LOG_REFS_ALWAYS;
1024 else if (git_config_bool(var, value))
1025 log_all_ref_updates = LOG_REFS_NORMAL;
1026 else
1027 log_all_ref_updates = LOG_REFS_NONE;
6de08ae6
SP
1028 return 0;
1029 }
1030
2f8acdb3
JH
1031 if (!strcmp(var, "core.warnambiguousrefs")) {
1032 warn_ambiguous_refs = git_config_bool(var, value);
1033 return 0;
1034 }
1035
a71f09fe 1036 if (!strcmp(var, "core.abbrev")) {
48d5014d
JH
1037 if (!value)
1038 return config_error_nonbool(var);
1039 if (!strcasecmp(value, "auto"))
1040 default_abbrev = -1;
1041 else {
1042 int abbrev = git_config_int(var, value);
1043 if (abbrev < minimum_abbrev || abbrev > 40)
1044 return error("abbrev length out of range: %d", abbrev);
1045 default_abbrev = abbrev;
1046 }
dce96489
LT
1047 return 0;
1048 }
1049
5b33cb1f
JK
1050 if (!strcmp(var, "core.disambiguate"))
1051 return set_disambiguate_hint_config(var, value);
1052
960ccca6 1053 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
1054 int level = git_config_int(var, value);
1055 if (level == -1)
1056 level = Z_DEFAULT_COMPRESSION;
1057 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1058 die(_("bad zlib compression level %d"), level);
12f6c308 1059 zlib_compression_level = level;
960ccca6
DH
1060 zlib_compression_seen = 1;
1061 return 0;
1062 }
1063
1064 if (!strcmp(var, "core.compression")) {
1065 int level = git_config_int(var, value);
1066 if (level == -1)
1067 level = Z_DEFAULT_COMPRESSION;
1068 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1069 die(_("bad zlib compression level %d"), level);
960ccca6
DH
1070 core_compression_level = level;
1071 core_compression_seen = 1;
1072 if (!zlib_compression_seen)
1073 zlib_compression_level = level;
8de7eeb5
JH
1074 if (!pack_compression_seen)
1075 pack_compression_level = level;
12f6c308
JBH
1076 return 0;
1077 }
1078
60bb8b14 1079 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 1080 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 1081 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
1082
1083 /* This value must be multiple of (pagesize * 2) */
1084 packed_git_window_size /= pgsz_x2;
1085 if (packed_git_window_size < 1)
1086 packed_git_window_size = 1;
1087 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
1088 return 0;
1089 }
1090
15366280 1091 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 1092 big_file_threshold = git_config_ulong(var, value);
15366280
JH
1093 return 0;
1094 }
1095
77ccc5bb 1096 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 1097 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
1098 return 0;
1099 }
1100
18bdec11 1101 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 1102 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
1103 return 0;
1104 }
1105
6c510bee 1106 if (!strcmp(var, "core.autocrlf")) {
d7f46334 1107 if (value && !strcasecmp(value, "input")) {
fd6cce9e 1108 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
1109 return 0;
1110 }
6c510bee
LT
1111 auto_crlf = git_config_bool(var, value);
1112 return 0;
1113 }
1114
21e5ad50
SP
1115 if (!strcmp(var, "core.safecrlf")) {
1116 if (value && !strcasecmp(value, "warn")) {
1117 safe_crlf = SAFE_CRLF_WARN;
1118 return 0;
1119 }
1120 safe_crlf = git_config_bool(var, value);
1121 return 0;
1122 }
1123
942e7747
EB
1124 if (!strcmp(var, "core.eol")) {
1125 if (value && !strcasecmp(value, "lf"))
ec70f52f 1126 core_eol = EOL_LF;
942e7747 1127 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 1128 core_eol = EOL_CRLF;
942e7747 1129 else if (value && !strcasecmp(value, "native"))
ec70f52f 1130 core_eol = EOL_NATIVE;
942e7747 1131 else
ec70f52f 1132 core_eol = EOL_UNSET;
942e7747
EB
1133 return 0;
1134 }
1135
a97a7468
JS
1136 if (!strcmp(var, "core.notesref")) {
1137 notes_ref_name = xstrdup(value);
1138 return 0;
1139 }
1140
806e2ad7
LT
1141 if (!strcmp(var, "core.editor"))
1142 return git_config_string(&editor_program, var, value);
1143
eff80a9f 1144 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
1145 if (!value)
1146 return config_error_nonbool(var);
ad524f83 1147 else if (!strcasecmp(value, "auto"))
84c9dc2c 1148 auto_comment_line_char = 1;
ad524f83 1149 else if (value[0] && !value[1]) {
649409b7 1150 comment_line_char = value[0];
84c9dc2c 1151 auto_comment_line_char = 0;
50b54fd7
NTND
1152 } else
1153 return error("core.commentChar should only be one character");
1154 return 0;
eff80a9f
JH
1155 }
1156
d3e7da89
AK
1157 if (!strcmp(var, "core.askpass"))
1158 return git_config_string(&askpass_program, var, value);
1159
806e2ad7 1160 if (!strcmp(var, "core.excludesfile"))
395de250 1161 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
1162
1163 if (!strcmp(var, "core.whitespace")) {
1164 if (!value)
1165 return config_error_nonbool(var);
1166 whitespace_rule_cfg = parse_whitespace_rule(value);
1167 return 0;
1168 }
1169
aafe9fba
LT
1170 if (!strcmp(var, "core.fsyncobjectfiles")) {
1171 fsync_object_files = git_config_bool(var, value);
1172 return 0;
1173 }
1174
671c9b7e
LT
1175 if (!strcmp(var, "core.preloadindex")) {
1176 core_preload_index = git_config_bool(var, value);
1177 return 0;
1178 }
1179
348df166
JS
1180 if (!strcmp(var, "core.createobject")) {
1181 if (!strcmp(value, "rename"))
1182 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1183 else if (!strcmp(value, "link"))
1184 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1185 else
8262aaa2 1186 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
1187 return 0;
1188 }
1189
08aefc9e
NTND
1190 if (!strcmp(var, "core.sparsecheckout")) {
1191 core_apply_sparse_checkout = git_config_bool(var, value);
1192 return 0;
1193 }
1194
76759c7d
TB
1195 if (!strcmp(var, "core.precomposeunicode")) {
1196 precomposed_unicode = git_config_bool(var, value);
1197 return 0;
1198 }
1199
a42643aa
JK
1200 if (!strcmp(var, "core.protecthfs")) {
1201 protect_hfs = git_config_bool(var, value);
1202 return 0;
1203 }
1204
2b4c6efc
JS
1205 if (!strcmp(var, "core.protectntfs")) {
1206 protect_ntfs = git_config_bool(var, value);
1207 return 0;
76759c7d
TB
1208 }
1209
f30afdab
JS
1210 if (!strcmp(var, "core.hidedotfiles")) {
1211 if (value && !strcasecmp(value, "dotgitonly"))
1212 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
1213 else
1214 hide_dotfiles = git_config_bool(var, value);
1215 return 0;
1216 }
1217
806e2ad7
LT
1218 /* Add other config variables here and to Documentation/config.txt. */
1219 return 0;
1220}
1221
1141f492 1222static int git_default_i18n_config(const char *var, const char *value)
d1364529 1223{
ea5105a5
CC
1224 if (!strcmp(var, "i18n.commitencoding"))
1225 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1226
ea5105a5
CC
1227 if (!strcmp(var, "i18n.logoutputencoding"))
1228 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1229
1141f492
LT
1230 /* Add other config variables here and to Documentation/config.txt. */
1231 return 0;
1232}
039bc64e 1233
1141f492
LT
1234static int git_default_branch_config(const char *var, const char *value)
1235{
9ed36cfa
JS
1236 if (!strcmp(var, "branch.autosetupmerge")) {
1237 if (value && !strcasecmp(value, "always")) {
1238 git_branch_track = BRANCH_TRACK_ALWAYS;
1239 return 0;
1240 }
1241 git_branch_track = git_config_bool(var, value);
1242 return 0;
1243 }
c998ae9b
DS
1244 if (!strcmp(var, "branch.autosetuprebase")) {
1245 if (!value)
1246 return config_error_nonbool(var);
1247 else if (!strcmp(value, "never"))
1248 autorebase = AUTOREBASE_NEVER;
1249 else if (!strcmp(value, "local"))
1250 autorebase = AUTOREBASE_LOCAL;
1251 else if (!strcmp(value, "remote"))
1252 autorebase = AUTOREBASE_REMOTE;
1253 else if (!strcmp(value, "always"))
1254 autorebase = AUTOREBASE_ALWAYS;
1255 else
8c3ca351 1256 return error("malformed value for %s", var);
c998ae9b
DS
1257 return 0;
1258 }
a9cc857a 1259
1ab661dd 1260 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1261 return 0;
1262}
1263
52153747
FAG
1264static int git_default_push_config(const char *var, const char *value)
1265{
1266 if (!strcmp(var, "push.default")) {
1267 if (!value)
1268 return config_error_nonbool(var);
1269 else if (!strcmp(value, "nothing"))
1270 push_default = PUSH_DEFAULT_NOTHING;
1271 else if (!strcmp(value, "matching"))
1272 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1273 else if (!strcmp(value, "simple"))
1274 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1275 else if (!strcmp(value, "upstream"))
1276 push_default = PUSH_DEFAULT_UPSTREAM;
1277 else if (!strcmp(value, "tracking")) /* deprecated */
1278 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1279 else if (!strcmp(value, "current"))
1280 push_default = PUSH_DEFAULT_CURRENT;
1281 else {
8c3ca351 1282 error("malformed value for %s: %s", var, value);
b55e6775
MM
1283 return error("Must be one of nothing, matching, simple, "
1284 "upstream or current.");
52153747
FAG
1285 }
1286 return 0;
1287 }
1288
1289 /* Add other config variables here and to Documentation/config.txt. */
1290 return 0;
1291}
1292
d551a488
MSO
1293static int git_default_mailmap_config(const char *var, const char *value)
1294{
1295 if (!strcmp(var, "mailmap.file"))
9352fd57 1296 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1297 if (!strcmp(var, "mailmap.blob"))
1298 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1299
1300 /* Add other config variables here and to Documentation/config.txt. */
1301 return 0;
1302}
1303
1141f492
LT
1304int git_default_config(const char *var, const char *value, void *dummy)
1305{
59556548 1306 if (starts_with(var, "core."))
1141f492
LT
1307 return git_default_core_config(var, value);
1308
59556548 1309 if (starts_with(var, "user."))
9597921b 1310 return git_ident_config(var, value, dummy);
1141f492 1311
59556548 1312 if (starts_with(var, "i18n."))
1141f492
LT
1313 return git_default_i18n_config(var, value);
1314
59556548 1315 if (starts_with(var, "branch."))
1141f492
LT
1316 return git_default_branch_config(var, value);
1317
59556548 1318 if (starts_with(var, "push."))
52153747
FAG
1319 return git_default_push_config(var, value);
1320
59556548 1321 if (starts_with(var, "mailmap."))
d551a488
MSO
1322 return git_default_mailmap_config(var, value);
1323
59556548 1324 if (starts_with(var, "advice."))
75194438
JK
1325 return git_default_advice_config(var, value);
1326
1141f492
LT
1327 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1328 pager_use_color = git_config_bool(var,value);
1329 return 0;
1330 }
1331
568508e7
JH
1332 if (!strcmp(var, "pack.packsizelimit")) {
1333 pack_size_limit_cfg = git_config_ulong(var, value);
1334 return 0;
1335 }
8de7eeb5
JH
1336
1337 if (!strcmp(var, "pack.compression")) {
1338 int level = git_config_int(var, value);
1339 if (level == -1)
1340 level = Z_DEFAULT_COMPRESSION;
1341 else if (level < 0 || level > Z_BEST_COMPRESSION)
1342 die(_("bad pack compression level %d"), level);
1343 pack_compression_level = level;
1344 pack_compression_seen = 1;
1345 return 0;
1346 }
1347
1141f492
LT
1348 /* Add other config variables here and to Documentation/config.txt. */
1349 return 0;
1350}
1351
ca4b5de2 1352/*
b2dc0945 1353 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1354 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1355 * this function.
1356 */
4d8dd149 1357static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
ca4b5de2
HV
1358{
1359 int ret;
1360
1361 /* push config-file parsing state stack */
1362 top->prev = cf;
1363 top->linenr = 1;
1364 top->eof = 0;
1365 strbuf_init(&top->value, 1024);
1366 strbuf_init(&top->var, 1024);
1367 cf = top;
1368
4d8dd149 1369 ret = git_parse_source(fn, data);
ca4b5de2
HV
1370
1371 /* pop config-file parsing state stack */
1372 strbuf_release(&top->value);
1373 strbuf_release(&top->var);
1374 cf = top->prev;
1375
1376 return ret;
1377}
1378
3caec73b 1379static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1380 const enum config_origin_type origin_type,
1381 const char *name, const char *path, FILE *f,
473166b9 1382 void *data)
17712991 1383{
3caec73b 1384 struct config_source top;
17712991 1385
3caec73b 1386 top.u.file = f;
473166b9 1387 top.origin_type = origin_type;
3caec73b
KS
1388 top.name = name;
1389 top.path = path;
1390 top.die_on_error = 1;
1391 top.do_fgetc = config_file_fgetc;
1392 top.do_ungetc = config_file_ungetc;
1393 top.do_ftell = config_file_ftell;
924aaf3e 1394
3caec73b
KS
1395 return do_config_from(&top, fn, data);
1396}
924aaf3e 1397
3caec73b
KS
1398static int git_config_from_stdin(config_fn_t fn, void *data)
1399{
1b8132d9 1400 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, data);
3caec73b
KS
1401}
1402
1403int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1404{
1405 int ret = -1;
1406 FILE *f;
924aaf3e 1407
3caec73b
KS
1408 f = fopen(filename, "r");
1409 if (f) {
260d408e 1410 flockfile(f);
1b8132d9 1411 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, filename, f, data);
260d408e 1412 funlockfile(f);
17712991
LT
1413 fclose(f);
1414 }
1415 return ret;
1416}
10bea152 1417
1b8132d9 1418int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
473166b9 1419 const char *name, const char *buf, size_t len, void *data)
1bc88819
HV
1420{
1421 struct config_source top;
1422
1423 top.u.buf.buf = buf;
1424 top.u.buf.len = len;
1425 top.u.buf.pos = 0;
473166b9 1426 top.origin_type = origin_type;
1bc88819 1427 top.name = name;
d14d4244 1428 top.path = NULL;
b2dc0945 1429 top.die_on_error = 0;
49d6cfa5
JK
1430 top.do_fgetc = config_buf_fgetc;
1431 top.do_ungetc = config_buf_ungetc;
1432 top.do_ftell = config_buf_ftell;
1bc88819
HV
1433
1434 return do_config_from(&top, fn, data);
1435}
1436
9ebf689a
BW
1437int git_config_from_blob_sha1(config_fn_t fn,
1438 const char *name,
1439 const unsigned char *sha1,
1440 void *data)
1bc88819
HV
1441{
1442 enum object_type type;
1443 char *buf;
1444 unsigned long size;
1445 int ret;
1446
1447 buf = read_sha1_file(sha1, &type, &size);
1448 if (!buf)
1449 return error("unable to load config blob object '%s'", name);
1450 if (type != OBJ_BLOB) {
1451 free(buf);
1452 return error("reference '%s' does not point to a blob", name);
1453 }
1454
1b8132d9 1455 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
1bc88819
HV
1456 free(buf);
1457
1458 return ret;
1459}
1460
1461static int git_config_from_blob_ref(config_fn_t fn,
1462 const char *name,
1463 void *data)
1464{
1465 unsigned char sha1[20];
1466
1467 if (get_sha1(name, sha1) < 0)
1468 return error("unable to resolve config blob '%s'", name);
1469 return git_config_from_blob_sha1(fn, name, sha1, data);
1470}
1471
506b17b1
JS
1472const char *git_etc_gitconfig(void)
1473{
7f0e39fa 1474 static const char *system_wide;
2de9de5e
SP
1475 if (!system_wide)
1476 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1477 return system_wide;
506b17b1
JS
1478}
1479
23b0c478
SP
1480/*
1481 * Parse environment variable 'k' as a boolean (in various
1482 * possible spellings); if missing, use the default value 'def'.
1483 */
0ef37164 1484int git_env_bool(const char *k, int def)
ab88c363
JK
1485{
1486 const char *v = getenv(k);
1487 return v ? git_config_bool(k, v) : def;
1488}
1489
23b0c478
SP
1490/*
1491 * Parse environment variable 'k' as ulong with possibly a unit
1492 * suffix; if missing, use the default value 'val'.
1493 */
1494unsigned long git_env_ulong(const char *k, unsigned long val)
1495{
1496 const char *v = getenv(k);
1497 if (v && !git_parse_ulong(v, &val))
1498 die("failed to parse %s", k);
1499 return val;
1500}
1501
ab88c363
JK
1502int git_config_system(void)
1503{
1504 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1505}
1506
80181868 1507static int do_git_config_sequence(config_fn_t fn, void *data)
4f629539 1508{
c72ee44b 1509 int ret = 0;
509adc33
PT
1510 char *xdg_config = xdg_config_home("config");
1511 char *user_config = expand_user_path("~/.gitconfig");
b9605bc4 1512 char *repo_config = have_git_dir() ? git_pathdup("config") : NULL;
5f1a63e0 1513
9acc5911 1514 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
c72ee44b 1515 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
dc871831
DB
1516 ret += git_config_from_file(fn, git_etc_gitconfig(),
1517 data);
5f1a63e0 1518
9acc5911 1519 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1520 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1521 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1522
c72ee44b 1523 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1524 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1525
9acc5911 1526 current_parsing_scope = CONFIG_SCOPE_REPO;
c72ee44b 1527 if (repo_config && !access_or_die(repo_config, R_OK, 0))
aa387407 1528 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1529
9acc5911 1530 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
c72ee44b 1531 if (git_config_from_parameters(fn, data) < 0)
8262aaa2 1532 die(_("unable to parse command-line config"));
8b1fa778 1533
9acc5911 1534 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1535 free(xdg_config);
1536 free(user_config);
80181868 1537 free(repo_config);
c72ee44b 1538 return ret;
4f629539
JH
1539}
1540
c9b5e2a5 1541int git_config_with_options(config_fn_t fn, void *data,
c8985ce0 1542 struct git_config_source *config_source,
c48f4b37 1543 const struct config_options *opts)
dbdf5854 1544{
9b25a0b5
JK
1545 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1546
c48f4b37 1547 if (opts->respect_includes) {
9b25a0b5
JK
1548 inc.fn = fn;
1549 inc.data = data;
c48f4b37 1550 inc.opts = opts;
9b25a0b5
JK
1551 fn = git_config_include;
1552 data = &inc;
1553 }
dbdf5854 1554
c9b5e2a5
JK
1555 /*
1556 * If we have a specific filename, use it. Otherwise, follow the
1557 * regular lookup sequence.
1558 */
3caec73b
KS
1559 if (config_source && config_source->use_stdin)
1560 return git_config_from_stdin(fn, data);
1561 else if (config_source && config_source->file)
c8985ce0
KS
1562 return git_config_from_file(fn, config_source->file, data);
1563 else if (config_source && config_source->blob)
1564 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1565
80181868 1566 return do_git_config_sequence(fn, data);
dbdf5854
NTND
1567}
1568
155ef25f 1569static void git_config_raw(config_fn_t fn, void *data)
c9b5e2a5 1570{
c48f4b37
NTND
1571 struct config_options opts = {0};
1572
1573 opts.respect_includes = 1;
1574 if (git_config_with_options(fn, data, NULL, &opts) < 0)
aace4385
TA
1575 /*
1576 * git_config_with_options() normally returns only
c72ee44b 1577 * zero, as most errors are fatal, and
aace4385
TA
1578 * non-fatal potential errors are guarded by "if"
1579 * statements that are entered only when no error is
1580 * possible.
1581 *
1582 * If we ever encounter a non-fatal error, it means
1583 * something went really wrong and we should stop
1584 * immediately.
1585 */
3a39f61e 1586 die(_("unknown error occurred while reading the configuration files"));
c9b5e2a5
JK
1587}
1588
155ef25f 1589static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1590{
155ef25f
TA
1591 int i, value_index;
1592 struct string_list *values;
1593 struct config_set_element *entry;
1594 struct configset_list *list = &cs->list;
155ef25f
TA
1595
1596 for (i = 0; i < list->nr; i++) {
1597 entry = list->items[i].e;
1598 value_index = list->items[i].value_index;
1599 values = &entry->value_list;
0d44a2da
JK
1600
1601 current_config_kvi = values->items[value_index].util;
1602
1603 if (fn(entry->key, values->items[value_index].string, data) < 0)
1604 git_die_config_linenr(entry->key,
1605 current_config_kvi->filename,
1606 current_config_kvi->linenr);
1607
1608 current_config_kvi = NULL;
155ef25f
TA
1609 }
1610}
1611
0654aa57
JS
1612void read_early_config(config_fn_t cb, void *data)
1613{
c48f4b37 1614 struct config_options opts = {0};
1a27409a 1615 struct strbuf buf = STRBUF_INIT;
2185fde5 1616 char *to_free = NULL;
1a27409a 1617
c48f4b37 1618 opts.respect_includes = 1;
0654aa57 1619
2185fde5
NTND
1620 if (have_git_dir())
1621 opts.git_dir = get_git_dir();
0654aa57 1622 /*
1a27409a
JS
1623 * When setup_git_directory() was not yet asked to discover the
1624 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1625 * is any repository config we should use (but unlike
1626 * setup_git_directory_gently(), no global state is changed, most
1627 * notably, the current working directory is still the same after the
1628 * call).
0654aa57 1629 */
2185fde5
NTND
1630 else if (discover_git_directory(&buf))
1631 opts.git_dir = to_free = xstrdup(buf.buf);
1632
1633 git_config_with_options(cb, data, NULL, &opts);
1634
1635 if (!have_git_dir() && opts.git_dir) {
0654aa57
JS
1636 struct git_config_source repo_config;
1637
1638 memset(&repo_config, 0, sizeof(repo_config));
1a27409a
JS
1639 strbuf_addstr(&buf, "/config");
1640 repo_config.file = buf.buf;
c48f4b37 1641 git_config_with_options(cb, data, &repo_config, &opts);
0654aa57 1642 }
1a27409a 1643 strbuf_release(&buf);
2185fde5 1644 free(to_free);
0654aa57
JS
1645}
1646
155ef25f
TA
1647static void git_config_check_init(void);
1648
1649void git_config(config_fn_t fn, void *data)
1650{
1651 git_config_check_init();
1652 configset_iter(&the_config_set, fn, data);
c9b5e2a5
JK
1653}
1654
3c8687a7
TA
1655static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1656{
1657 struct config_set_element k;
1658 struct config_set_element *found_entry;
1659 char *normalized_key;
3c8687a7
TA
1660 /*
1661 * `key` may come from the user, so normalize it before using it
1662 * for querying entries from the hashmap.
1663 */
270cd9ea 1664 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1665 return NULL;
1666
1667 hashmap_entry_init(&k, strhash(normalized_key));
1668 k.key = normalized_key;
1669 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1670 free(normalized_key);
1671 return found_entry;
1672}
1673
1674static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1675{
1676 struct config_set_element *e;
3df8fd62 1677 struct string_list_item *si;
155ef25f 1678 struct configset_list_item *l_item;
3df8fd62
TA
1679 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1680
3c8687a7
TA
1681 e = configset_find_element(cs, key);
1682 /*
1683 * Since the keys are being fed by git_config*() callback mechanism, they
1684 * are already normalized. So simply add them without any further munging.
1685 */
1686 if (!e) {
1687 e = xmalloc(sizeof(*e));
1688 hashmap_entry_init(e, strhash(key));
1689 e->key = xstrdup(key);
1690 string_list_init(&e->value_list, 1);
1691 hashmap_add(&cs->config_hash, e);
1692 }
8c53f071 1693 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1694
1695 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1696 l_item = &cs->list.items[cs->list.nr++];
1697 l_item->e = e;
1698 l_item->value_index = e->value_list.nr - 1;
1699
3258258f
JK
1700 if (!cf)
1701 die("BUG: configset_add_value has no source");
1702 if (cf->name) {
3df8fd62
TA
1703 kv_info->filename = strintern(cf->name);
1704 kv_info->linenr = cf->linenr;
1b8132d9 1705 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1706 } else {
1707 /* for values read from `git_config_from_parameters()` */
1708 kv_info->filename = NULL;
1709 kv_info->linenr = -1;
1b8132d9 1710 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1711 }
9acc5911 1712 kv_info->scope = current_parsing_scope;
3df8fd62 1713 si->util = kv_info;
3c8687a7
TA
1714
1715 return 0;
1716}
1717
1718static int config_set_element_cmp(const struct config_set_element *e1,
1719 const struct config_set_element *e2, const void *unused)
1720{
1721 return strcmp(e1->key, e2->key);
1722}
1723
1724void git_configset_init(struct config_set *cs)
1725{
1726 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1727 cs->hash_initialized = 1;
155ef25f
TA
1728 cs->list.nr = 0;
1729 cs->list.alloc = 0;
1730 cs->list.items = NULL;
3c8687a7
TA
1731}
1732
1733void git_configset_clear(struct config_set *cs)
1734{
1735 struct config_set_element *entry;
1736 struct hashmap_iter iter;
1737 if (!cs->hash_initialized)
1738 return;
1739
1740 hashmap_iter_init(&cs->config_hash, &iter);
1741 while ((entry = hashmap_iter_next(&iter))) {
1742 free(entry->key);
3df8fd62 1743 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1744 }
1745 hashmap_free(&cs->config_hash, 1);
1746 cs->hash_initialized = 0;
155ef25f
TA
1747 free(cs->list.items);
1748 cs->list.nr = 0;
1749 cs->list.alloc = 0;
1750 cs->list.items = NULL;
3c8687a7
TA
1751}
1752
1753static int config_set_callback(const char *key, const char *value, void *cb)
1754{
1755 struct config_set *cs = cb;
1756 configset_add_value(cs, key, value);
1757 return 0;
1758}
1759
1760int git_configset_add_file(struct config_set *cs, const char *filename)
1761{
1762 return git_config_from_file(config_set_callback, filename, cs);
1763}
1764
1765int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1766{
1767 const struct string_list *values = NULL;
1768 /*
1769 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1770 * queried key in the files of the configset, the value returned will be the last
1771 * value in the value list for that key.
1772 */
1773 values = git_configset_get_value_multi(cs, key);
1774
1775 if (!values)
1776 return 1;
1777 assert(values->nr > 0);
1778 *value = values->items[values->nr - 1].string;
1779 return 0;
1780}
1781
1782const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1783{
1784 struct config_set_element *e = configset_find_element(cs, key);
1785 return e ? &e->value_list : NULL;
1786}
1787
1788int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1789{
1790 const char *value;
1791 if (!git_configset_get_value(cs, key, &value))
1792 return git_config_string(dest, key, value);
1793 else
1794 return 1;
1795}
1796
1797int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1798{
1799 return git_configset_get_string_const(cs, key, (const char **)dest);
1800}
1801
1802int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1803{
1804 const char *value;
1805 if (!git_configset_get_value(cs, key, &value)) {
1806 *dest = git_config_int(key, value);
1807 return 0;
1808 } else
1809 return 1;
1810}
1811
1812int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1813{
1814 const char *value;
1815 if (!git_configset_get_value(cs, key, &value)) {
1816 *dest = git_config_ulong(key, value);
1817 return 0;
1818 } else
1819 return 1;
1820}
1821
1822int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1823{
1824 const char *value;
1825 if (!git_configset_get_value(cs, key, &value)) {
1826 *dest = git_config_bool(key, value);
1827 return 0;
1828 } else
1829 return 1;
1830}
1831
1832int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1833 int *is_bool, int *dest)
1834{
1835 const char *value;
1836 if (!git_configset_get_value(cs, key, &value)) {
1837 *dest = git_config_bool_or_int(key, value, is_bool);
1838 return 0;
1839 } else
1840 return 1;
1841}
1842
1843int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1844{
1845 const char *value;
1846 if (!git_configset_get_value(cs, key, &value)) {
1847 *dest = git_config_maybe_bool(key, value);
1848 if (*dest == -1)
1849 return -1;
1850 return 0;
1851 } else
1852 return 1;
1853}
1854
1855int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1856{
1857 const char *value;
1858 if (!git_configset_get_value(cs, key, &value))
1859 return git_config_pathname(dest, key, value);
1860 else
1861 return 1;
1862}
1863
1864static void git_config_check_init(void)
1865{
1866 if (the_config_set.hash_initialized)
1867 return;
1868 git_configset_init(&the_config_set);
155ef25f 1869 git_config_raw(config_set_callback, &the_config_set);
3c8687a7
TA
1870}
1871
1872void git_config_clear(void)
1873{
1874 if (!the_config_set.hash_initialized)
1875 return;
1876 git_configset_clear(&the_config_set);
1877}
1878
1879int git_config_get_value(const char *key, const char **value)
1880{
1881 git_config_check_init();
1882 return git_configset_get_value(&the_config_set, key, value);
1883}
1884
1885const struct string_list *git_config_get_value_multi(const char *key)
1886{
1887 git_config_check_init();
1888 return git_configset_get_value_multi(&the_config_set, key);
1889}
1890
1891int git_config_get_string_const(const char *key, const char **dest)
1892{
5a80e97c 1893 int ret;
3c8687a7 1894 git_config_check_init();
5a80e97c
TA
1895 ret = git_configset_get_string_const(&the_config_set, key, dest);
1896 if (ret < 0)
1897 git_die_config(key, NULL);
1898 return ret;
3c8687a7
TA
1899}
1900
1901int git_config_get_string(const char *key, char **dest)
1902{
1903 git_config_check_init();
1904 return git_config_get_string_const(key, (const char **)dest);
1905}
1906
1907int git_config_get_int(const char *key, int *dest)
1908{
1909 git_config_check_init();
1910 return git_configset_get_int(&the_config_set, key, dest);
1911}
1912
1913int git_config_get_ulong(const char *key, unsigned long *dest)
1914{
1915 git_config_check_init();
1916 return git_configset_get_ulong(&the_config_set, key, dest);
1917}
1918
1919int git_config_get_bool(const char *key, int *dest)
1920{
1921 git_config_check_init();
1922 return git_configset_get_bool(&the_config_set, key, dest);
1923}
1924
1925int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1926{
1927 git_config_check_init();
1928 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1929}
1930
1931int git_config_get_maybe_bool(const char *key, int *dest)
1932{
1933 git_config_check_init();
1934 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1935}
1936
1937int git_config_get_pathname(const char *key, const char **dest)
1938{
5a80e97c 1939 int ret;
3c8687a7 1940 git_config_check_init();
5a80e97c
TA
1941 ret = git_configset_get_pathname(&the_config_set, key, dest);
1942 if (ret < 0)
1943 git_die_config(key, NULL);
1944 return ret;
1945}
1946
77d67977
CC
1947int git_config_get_expiry(const char *key, const char **output)
1948{
1949 int ret = git_config_get_string_const(key, output);
1950 if (ret)
1951 return ret;
1952 if (strcmp(*output, "now")) {
1953 unsigned long now = approxidate("now");
1954 if (approxidate(*output) >= now)
1955 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
1956 }
1957 return ret;
1958}
1959
435ec090
CC
1960int git_config_get_untracked_cache(void)
1961{
1962 int val = -1;
1963 const char *v;
1964
dae6c322
CC
1965 /* Hack for test programs like test-dump-untracked-cache */
1966 if (ignore_untracked_cache_config)
1967 return -1;
1968
435ec090
CC
1969 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
1970 return val;
1971
1972 if (!git_config_get_value("core.untrackedcache", &v)) {
1973 if (!strcasecmp(v, "keep"))
1974 return -1;
1975
f60ef2d6
CC
1976 error(_("unknown core.untrackedCache value '%s'; "
1977 "using 'keep' default value"), v);
435ec090
CC
1978 return -1;
1979 }
1980
1981 return -1; /* default value */
1982}
1983
1f44b09b
CC
1984int git_config_get_split_index(void)
1985{
1986 int val;
1987
1988 if (!git_config_get_maybe_bool("core.splitindex", &val))
1989 return val;
1990
1991 return -1; /* default value */
1992}
1993
72dcb7b3
CC
1994int git_config_get_max_percent_split_change(void)
1995{
1996 int val = -1;
1997
1998 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
1999 if (0 <= val && val <= 100)
2000 return val;
2001
2002 return error(_("splitIndex.maxPercentChange value '%d' "
2003 "should be between 0 and 100"), val);
2004 }
2005
2006 return -1; /* default value */
2007}
2008
5a80e97c
TA
2009NORETURN
2010void git_die_config_linenr(const char *key, const char *filename, int linenr)
2011{
2012 if (!filename)
2013 die(_("unable to parse '%s' from command-line config"), key);
2014 else
2015 die(_("bad config variable '%s' in file '%s' at line %d"),
2016 key, filename, linenr);
2017}
2018
2019NORETURN __attribute__((format(printf, 2, 3)))
2020void git_die_config(const char *key, const char *err, ...)
2021{
2022 const struct string_list *values;
2023 struct key_value_info *kv_info;
2024
2025 if (err) {
2026 va_list params;
2027 va_start(params, err);
2028 vreportf("error: ", err, params);
2029 va_end(params);
2030 }
2031 values = git_config_get_value_multi(key);
2032 kv_info = values->items[values->nr - 1].util;
2033 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2034}
2035
10bea152
JS
2036/*
2037 * Find all the stuff for git_config_set() below.
2038 */
4ddba79d 2039
10bea152
JS
2040static struct {
2041 int baselen;
4b25d091 2042 char *key;
f98d863d 2043 int do_not_match;
4b25d091 2044 regex_t *value_regex;
4ddba79d 2045 int multi_replace;
83786fa4
TR
2046 size_t *offset;
2047 unsigned int offset_alloc;
10bea152
JS
2048 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
2049 int seen;
2050} store;
2051
4b25d091 2052static int matches(const char *key, const char *value)
f98d863d 2053{
c1063be2
JK
2054 if (strcmp(key, store.key))
2055 return 0; /* not ours */
2056 if (!store.value_regex)
2057 return 1; /* always matches */
2058 if (store.value_regex == CONFIG_REGEX_NONE)
2059 return 0; /* never matches */
2060
2061 return store.do_not_match ^
2062 (value && !regexec(store.value_regex, value, 0, NULL, 0));
f98d863d
JS
2063}
2064
4b25d091 2065static int store_aux(const char *key, const char *value, void *cb)
10bea152 2066{
ae9ee41d
JH
2067 const char *ep;
2068 size_t section_len;
2069
10bea152
JS
2070 switch (store.state) {
2071 case KEY_SEEN:
f98d863d 2072 if (matches(key, value)) {
4ddba79d 2073 if (store.seen == 1 && store.multi_replace == 0) {
8262aaa2 2074 warning(_("%s has multiple values"), key);
10bea152 2075 }
4ddba79d 2076
83786fa4
TR
2077 ALLOC_GROW(store.offset, store.seen + 1,
2078 store.offset_alloc);
2079
49d6cfa5 2080 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2081 store.seen++;
2082 }
2083 break;
2084 case SECTION_SEEN:
ae9ee41d
JH
2085 /*
2086 * What we are looking for is in store.key (both
2087 * section and var), and its section part is baselen
2088 * long. We found key (again, both section and var).
2089 * We would want to know if this key is in the same
2090 * section as what we are looking for. We already
2091 * know we are in the same section as what should
2092 * hold store.key.
2093 */
2094 ep = strrchr(key, '.');
2095 section_len = ep - key;
2096
2097 if ((section_len != store.baselen) ||
2098 memcmp(key, store.key, section_len+1)) {
10bea152
JS
2099 store.state = SECTION_END_SEEN;
2100 break;
ae9ee41d
JH
2101 }
2102
2103 /*
2104 * Do not increment matches: this is no match, but we
2105 * just made sure we are in the desired section.
2106 */
83786fa4
TR
2107 ALLOC_GROW(store.offset, store.seen + 1,
2108 store.offset_alloc);
49d6cfa5 2109 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2110 /* fallthru */
2111 case SECTION_END_SEEN:
2112 case START:
f98d863d 2113 if (matches(key, value)) {
83786fa4
TR
2114 ALLOC_GROW(store.offset, store.seen + 1,
2115 store.offset_alloc);
49d6cfa5 2116 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2117 store.state = KEY_SEEN;
2118 store.seen++;
d14f7764
LT
2119 } else {
2120 if (strrchr(key, '.') - key == store.baselen &&
bdf0ef08 2121 !strncmp(key, store.key, store.baselen)) {
93ddef3e 2122 store.state = SECTION_SEEN;
83786fa4
TR
2123 ALLOC_GROW(store.offset,
2124 store.seen + 1,
2125 store.offset_alloc);
49d6cfa5 2126 store.offset[store.seen] = cf->do_ftell(cf);
d14f7764 2127 }
bdf0ef08 2128 }
10bea152
JS
2129 }
2130 return 0;
2131}
2132
64c0d71c 2133static int write_error(const char *filename)
480c9e52 2134{
64c0d71c 2135 error("failed to write new configuration file %s", filename);
480c9e52
AW
2136
2137 /* Same error code as "failed to rename". */
2138 return 4;
2139}
2140
4b25d091 2141static int store_write_section(int fd, const char *key)
10bea152 2142{
cb891a59
KH
2143 const char *dot;
2144 int i, success;
f285a2d7 2145 struct strbuf sb = STRBUF_INIT;
d14f7764 2146
cb891a59 2147 dot = memchr(key, '.', store.baselen);
d14f7764 2148 if (dot) {
cb891a59
KH
2149 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
2150 for (i = dot - key + 1; i < store.baselen; i++) {
e5c349ba 2151 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2152 strbuf_addch(&sb, '\\');
2153 strbuf_addch(&sb, key[i]);
d14f7764 2154 }
cb891a59
KH
2155 strbuf_addstr(&sb, "\"]\n");
2156 } else {
2157 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
d14f7764
LT
2158 }
2159
cb891a59
KH
2160 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2161 strbuf_release(&sb);
480c9e52 2162
cb891a59 2163 return success;
10bea152
JS
2164}
2165
4b25d091 2166static int store_write_pair(int fd, const char *key, const char *value)
10bea152 2167{
cb891a59
KH
2168 int i, success;
2169 int length = strlen(key + store.baselen + 1);
2170 const char *quote = "";
f285a2d7 2171 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2172
6281f394
JM
2173 /*
2174 * Check to see if the value needs to be surrounded with a dq pair.
2175 * Note that problematic characters are always backslash-quoted; this
2176 * check is about not losing leading or trailing SP and strings that
2177 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2178 * configuration parser.
2179 */
cdd4fb15 2180 if (value[0] == ' ')
cb891a59 2181 quote = "\"";
cdd4fb15
BG
2182 for (i = 0; value[i]; i++)
2183 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2184 quote = "\"";
2185 if (i && value[i - 1] == ' ')
2186 quote = "\"";
2187
cb891a59
KH
2188 strbuf_addf(&sb, "\t%.*s = %s",
2189 length, key + store.baselen + 1, quote);
10bea152 2190
10bea152
JS
2191 for (i = 0; value[i]; i++)
2192 switch (value[i]) {
480c9e52 2193 case '\n':
cb891a59 2194 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2195 break;
2196 case '\t':
cb891a59 2197 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2198 break;
2199 case '"':
2200 case '\\':
cb891a59 2201 strbuf_addch(&sb, '\\');
480c9e52 2202 default:
cb891a59 2203 strbuf_addch(&sb, value[i]);
480c9e52
AW
2204 break;
2205 }
cb891a59
KH
2206 strbuf_addf(&sb, "%s\n", quote);
2207
2208 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2209 strbuf_release(&sb);
2210
2211 return success;
10bea152
JS
2212}
2213
4b25d091
FC
2214static ssize_t find_beginning_of_line(const char *contents, size_t size,
2215 size_t offset_, int *found_bracket)
4ddba79d 2216{
dc49cd76
SP
2217 size_t equal_offset = size, bracket_offset = size;
2218 ssize_t offset;
4ddba79d 2219
7a31cc0f 2220contline:
a6080a0a 2221 for (offset = offset_-2; offset > 0
4ddba79d
JS
2222 && contents[offset] != '\n'; offset--)
2223 switch (contents[offset]) {
2224 case '=': equal_offset = offset; break;
2225 case ']': bracket_offset = offset; break;
2226 }
7a31cc0f
FL
2227 if (offset > 0 && contents[offset-1] == '\\') {
2228 offset_ = offset;
2229 goto contline;
2230 }
4ddba79d
JS
2231 if (bracket_offset < equal_offset) {
2232 *found_bracket = 1;
2233 offset = bracket_offset+1;
2234 } else
2235 offset++;
2236
2237 return offset;
2238}
2239
30598ad0
PS
2240int git_config_set_in_file_gently(const char *config_filename,
2241 const char *key, const char *value)
5ec31182 2242{
30598ad0 2243 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2244}
2245
3d180648
PS
2246void git_config_set_in_file(const char *config_filename,
2247 const char *key, const char *value)
10bea152 2248{
3d180648 2249 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2250}
2251
30598ad0 2252int git_config_set_gently(const char *key, const char *value)
10bea152 2253{
30598ad0 2254 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2255}
2256
3d180648 2257void git_config_set(const char *key, const char *value)
b4c8aba6 2258{
3d180648 2259 git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
2260}
2261
2262/*
2263 * If value==NULL, unset in (remove from) config,
2264 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2265 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2266 * (only add a new one)
4ddba79d
JS
2267 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2268 * else all matching key/values (regardless how many) are removed,
2269 * before the new pair is written.
10bea152
JS
2270 *
2271 * Returns 0 on success.
2272 *
2273 * This function does this:
2274 *
2275 * - it locks the config file by creating ".git/config.lock"
2276 *
2277 * - it then parses the config using store_aux() as validator to find
2278 * the position on the key/value pair to replace. If it is to be unset,
2279 * it must be found exactly once.
2280 *
2281 * - the config file is mmap()ed and the part before the match (if any) is
2282 * written to the lock file, then the changed part and the rest.
2283 *
2284 * - the config file is removed and the lock file rename()d to it.
2285 *
2286 */
30598ad0
PS
2287int git_config_set_multivar_in_file_gently(const char *config_filename,
2288 const char *key, const char *value,
2289 const char *value_regex,
2290 int multi_replace)
10bea152 2291{
54d160ec 2292 int fd = -1, in_fd = -1;
dafc88b1 2293 int ret;
6cbf973c 2294 struct lock_file *lock = NULL;
0a5f5759 2295 char *filename_buf = NULL;
3a1b3126
JK
2296 char *contents = NULL;
2297 size_t contents_sz;
4ddba79d 2298
b09c53a3
LP
2299 /* parse-key returns negative; flip the sign to feed exit(3) */
2300 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2301 if (ret)
dafc88b1 2302 goto out_free;
b17e659d
JS
2303
2304 store.multi_replace = multi_replace;
10bea152 2305
0a5f5759
JK
2306 if (!config_filename)
2307 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2308
2309 /*
6cbf973c 2310 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2311 * contents of .git/config will be written into it.
2312 */
f1064f6b 2313 lock = xcalloc(1, sizeof(struct lock_file));
6cbf973c
BS
2314 fd = hold_lock_file_for_update(lock, config_filename, 0);
2315 if (fd < 0) {
f0658ec9 2316 error_errno("could not lock config file %s", config_filename);
10bea152 2317 free(store.key);
7a397419 2318 ret = CONFIG_NO_LOCK;
dafc88b1 2319 goto out_free;
10bea152
JS
2320 }
2321
2322 /*
2323 * If .git/config does not exist yet, write a minimal version.
2324 */
88fb958b
AR
2325 in_fd = open(config_filename, O_RDONLY);
2326 if ( in_fd < 0 ) {
10bea152
JS
2327 free(store.key);
2328
88fb958b 2329 if ( ENOENT != errno ) {
f0658ec9 2330 error_errno("opening %s", config_filename);
7a397419 2331 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2332 goto out_free;
88fb958b 2333 }
10bea152
JS
2334 /* if nothing to unset, error out */
2335 if (value == NULL) {
7a397419 2336 ret = CONFIG_NOTHING_SET;
dafc88b1 2337 goto out_free;
10bea152
JS
2338 }
2339
4b25d091 2340 store.key = (char *)key;
480c9e52 2341 if (!store_write_section(fd, key) ||
93c1e079
JH
2342 !store_write_pair(fd, key, value))
2343 goto write_err_out;
2344 } else {
88fb958b 2345 struct stat st;
3a1b3126 2346 size_t copy_begin, copy_end;
dc49cd76 2347 int i, new_line = 0;
10bea152
JS
2348
2349 if (value_regex == NULL)
2350 store.value_regex = NULL;
c1063be2
JK
2351 else if (value_regex == CONFIG_REGEX_NONE)
2352 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2353 else {
f98d863d
JS
2354 if (value_regex[0] == '!') {
2355 store.do_not_match = 1;
2356 value_regex++;
2357 } else
2358 store.do_not_match = 0;
2359
2d7320d0 2360 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2361 if (regcomp(store.value_regex, value_regex,
2362 REG_EXTENDED)) {
64c0d71c 2363 error("invalid pattern: %s", value_regex);
10bea152 2364 free(store.value_regex);
7a397419 2365 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2366 goto out_free;
10bea152
JS
2367 }
2368 }
2369
83786fa4 2370 ALLOC_GROW(store.offset, 1, store.offset_alloc);
4ddba79d 2371 store.offset[0] = 0;
10bea152
JS
2372 store.state = START;
2373 store.seen = 0;
2374
2375 /*
2376 * After this, store.offset will contain the *end* offset
2377 * of the last match, or remain at 0 if no match was found.
2378 * As a side effect, we make sure to transform only a valid
2379 * existing config file.
2380 */
ef90d6d4 2381 if (git_config_from_file(store_aux, config_filename, NULL)) {
64c0d71c 2382 error("invalid config file %s", config_filename);
10bea152 2383 free(store.key);
c1063be2
JK
2384 if (store.value_regex != NULL &&
2385 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2386 regfree(store.value_regex);
2387 free(store.value_regex);
2388 }
7a397419 2389 ret = CONFIG_INVALID_FILE;
dafc88b1 2390 goto out_free;
10bea152
JS
2391 }
2392
2393 free(store.key);
c1063be2
JK
2394 if (store.value_regex != NULL &&
2395 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2396 regfree(store.value_regex);
2397 free(store.value_regex);
2398 }
2399
4ddba79d
JS
2400 /* if nothing to unset, or too many matches, error out */
2401 if ((store.seen == 0 && value == NULL) ||
2402 (store.seen > 1 && multi_replace == 0)) {
7a397419 2403 ret = CONFIG_NOTHING_SET;
dafc88b1 2404 goto out_free;
10bea152
JS
2405 }
2406
29647d79
NTND
2407 if (fstat(in_fd, &st) == -1) {
2408 error_errno(_("fstat on %s failed"), config_filename);
2409 ret = CONFIG_INVALID_FILE;
2410 goto out_free;
2411 }
2412
dc49cd76 2413 contents_sz = xsize_t(st.st_size);
1570856b
JK
2414 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2415 MAP_PRIVATE, in_fd, 0);
2416 if (contents == MAP_FAILED) {
0e8771f1
JK
2417 if (errno == ENODEV && S_ISDIR(st.st_mode))
2418 errno = EISDIR;
f0658ec9 2419 error_errno("unable to mmap '%s'", config_filename);
1570856b
JK
2420 ret = CONFIG_INVALID_FILE;
2421 contents = NULL;
2422 goto out_free;
2423 }
10bea152 2424 close(in_fd);
54d160ec 2425 in_fd = -1;
10bea152 2426
b4fb09e4 2427 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9 2428 error_errno("chmod on %s failed", get_lock_file_path(lock));
daa22c6f
EW
2429 ret = CONFIG_NO_WRITE;
2430 goto out_free;
2431 }
2432
4ddba79d
JS
2433 if (store.seen == 0)
2434 store.seen = 1;
2435
2436 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2437 if (store.offset[i] == 0) {
dc49cd76 2438 store.offset[i] = copy_end = contents_sz;
4ddba79d
JS
2439 } else if (store.state != KEY_SEEN) {
2440 copy_end = store.offset[i];
10bea152 2441 } else
4ddba79d 2442 copy_end = find_beginning_of_line(
dc49cd76 2443 contents, contents_sz,
4ddba79d
JS
2444 store.offset[i]-2, &new_line);
2445
02e5ba4a
JK
2446 if (copy_end > 0 && contents[copy_end-1] != '\n')
2447 new_line = 1;
2448
4ddba79d
JS
2449 /* write the first part of the config */
2450 if (copy_end > copy_begin) {
93c1e079
JH
2451 if (write_in_full(fd, contents + copy_begin,
2452 copy_end - copy_begin) <
2453 copy_end - copy_begin)
2454 goto write_err_out;
2455 if (new_line &&
2b7ca830 2456 write_str_in_full(fd, "\n") != 1)
93c1e079 2457 goto write_err_out;
4ddba79d
JS
2458 }
2459 copy_begin = store.offset[i];
10bea152
JS
2460 }
2461
10bea152
JS
2462 /* write the pair (value == NULL means unset) */
2463 if (value != NULL) {
93c1e079
JH
2464 if (store.state == START) {
2465 if (!store_write_section(fd, key))
2466 goto write_err_out;
480c9e52 2467 }
93c1e079
JH
2468 if (!store_write_pair(fd, key, value))
2469 goto write_err_out;
10bea152
JS
2470 }
2471
2472 /* write the rest of the config */
dc49cd76 2473 if (copy_begin < contents_sz)
93c1e079 2474 if (write_in_full(fd, contents + copy_begin,
dc49cd76
SP
2475 contents_sz - copy_begin) <
2476 contents_sz - copy_begin)
93c1e079 2477 goto write_err_out;
7a64592c
KB
2478
2479 munmap(contents, contents_sz);
2480 contents = NULL;
10bea152
JS
2481 }
2482
4ed7cd3a 2483 if (commit_lock_file(lock) < 0) {
f0658ec9 2484 error_errno("could not write config file %s", config_filename);
7a397419 2485 ret = CONFIG_NO_WRITE;
e831855e 2486 lock = NULL;
dafc88b1 2487 goto out_free;
10bea152
JS
2488 }
2489
6cbf973c
BS
2490 /*
2491 * lock is committed, so don't try to roll it back below.
2492 * NOTE: Since lockfile.c keeps a linked list of all created
2493 * lock_file structures, it isn't safe to free(lock). It's
2494 * better to just leave it hanging around.
2495 */
2496 lock = NULL;
dafc88b1
SH
2497 ret = 0;
2498
3c8687a7
TA
2499 /* Invalidate the config cache */
2500 git_config_clear();
2501
dafc88b1 2502out_free:
6cbf973c
BS
2503 if (lock)
2504 rollback_lock_file(lock);
0a5f5759 2505 free(filename_buf);
3a1b3126
JK
2506 if (contents)
2507 munmap(contents, contents_sz);
54d160ec
SS
2508 if (in_fd >= 0)
2509 close(in_fd);
dafc88b1 2510 return ret;
93c1e079
JH
2511
2512write_err_out:
b4fb09e4 2513 ret = write_error(get_lock_file_path(lock));
93c1e079
JH
2514 goto out_free;
2515
10bea152
JS
2516}
2517
3d180648
PS
2518void git_config_set_multivar_in_file(const char *config_filename,
2519 const char *key, const char *value,
2520 const char *value_regex, int multi_replace)
b4c8aba6 2521{
1cae428e
JK
2522 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2523 value_regex, multi_replace))
2524 return;
2525 if (value)
8c3ca351 2526 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2527 else
2528 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2529}
2530
30598ad0
PS
2531int git_config_set_multivar_gently(const char *key, const char *value,
2532 const char *value_regex, int multi_replace)
5ec31182 2533{
30598ad0
PS
2534 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2535 multi_replace);
5ec31182
RR
2536}
2537
3d180648
PS
2538void git_config_set_multivar(const char *key, const char *value,
2539 const char *value_regex, int multi_replace)
5ec31182 2540{
3d180648
PS
2541 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2542 multi_replace);
5ec31182
RR
2543}
2544
118f8b24
PB
2545static int section_name_match (const char *buf, const char *name)
2546{
2547 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2548 if (buf[i] != '[')
2549 return 0;
2550 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2551 if (!dot && isspace(buf[i])) {
2552 dot = 1;
2553 if (name[j++] != '.')
2554 break;
2555 for (i++; isspace(buf[i]); i++)
2556 ; /* do nothing */
2557 if (buf[i] != '"')
2558 break;
2559 continue;
2560 }
2561 if (buf[i] == '\\' && dot)
2562 i++;
2563 else if (buf[i] == '"' && dot) {
2564 for (i++; isspace(buf[i]); i++)
2565 ; /* do_nothing */
2566 break;
2567 }
2568 if (buf[i] != name[j++])
2569 break;
2570 }
a4c0d463
AV
2571 if (buf[i] == ']' && name[j] == 0) {
2572 /*
2573 * We match, now just find the right length offset by
2574 * gobbling up any whitespace after it, as well
2575 */
2576 i++;
2577 for (; buf[i] && isspace(buf[i]); i++)
2578 ; /* do nothing */
2579 return i;
2580 }
2581 return 0;
118f8b24
PB
2582}
2583
94a35b1a
JK
2584static int section_name_is_ok(const char *name)
2585{
2586 /* Empty section names are bogus. */
2587 if (!*name)
2588 return 0;
2589
2590 /*
2591 * Before a dot, we must be alphanumeric or dash. After the first dot,
2592 * anything goes, so we can stop checking.
2593 */
2594 for (; *name && *name != '.'; name++)
2595 if (*name != '-' && !isalnum(*name))
2596 return 0;
2597 return 1;
2598}
2599
118f8b24 2600/* if new_name == NULL, the section is removed instead */
42bd39b5
JK
2601int git_config_rename_section_in_file(const char *config_filename,
2602 const char *old_name, const char *new_name)
0667fcfb 2603{
118f8b24 2604 int ret = 0, remove = 0;
42bd39b5 2605 char *filename_buf = NULL;
94a35b1a 2606 struct lock_file *lock;
0667fcfb
JS
2607 int out_fd;
2608 char buf[1024];
924aaf3e 2609 FILE *config_file;
daa22c6f 2610 struct stat st;
0667fcfb 2611
94a35b1a
JK
2612 if (new_name && !section_name_is_ok(new_name)) {
2613 ret = error("invalid section name: %s", new_name);
c06fa62d 2614 goto out_no_rollback;
94a35b1a
JK
2615 }
2616
42bd39b5
JK
2617 if (!config_filename)
2618 config_filename = filename_buf = git_pathdup("config");
2619
f1064f6b 2620 lock = xcalloc(1, sizeof(struct lock_file));
0667fcfb 2621 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
fc1905bb 2622 if (out_fd < 0) {
64c0d71c 2623 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
2624 goto out;
2625 }
0667fcfb 2626
fc1905bb 2627 if (!(config_file = fopen(config_filename, "rb"))) {
01ebb9dc 2628 /* no config file means nothing to rename, no error */
6e45b43f 2629 goto commit_and_out;
fc1905bb 2630 }
0667fcfb 2631
29647d79
NTND
2632 if (fstat(fileno(config_file), &st) == -1) {
2633 ret = error_errno(_("fstat on %s failed"), config_filename);
2634 goto out;
2635 }
daa22c6f 2636
b4fb09e4 2637 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9
NTND
2638 ret = error_errno("chmod on %s failed",
2639 get_lock_file_path(lock));
daa22c6f
EW
2640 goto out;
2641 }
2642
0667fcfb
JS
2643 while (fgets(buf, sizeof(buf), config_file)) {
2644 int i;
480c9e52 2645 int length;
9a5abfc7 2646 char *output = buf;
0667fcfb
JS
2647 for (i = 0; buf[i] && isspace(buf[i]); i++)
2648 ; /* do nothing */
2649 if (buf[i] == '[') {
2650 /* it's a section */
a4c0d463
AV
2651 int offset = section_name_match(&buf[i], old_name);
2652 if (offset > 0) {
118f8b24
PB
2653 ret++;
2654 if (new_name == NULL) {
2655 remove = 1;
0667fcfb
JS
2656 continue;
2657 }
0667fcfb 2658 store.baselen = strlen(new_name);
480c9e52 2659 if (!store_write_section(out_fd, new_name)) {
b4fb09e4 2660 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2661 goto out;
2662 }
9a5abfc7
AV
2663 /*
2664 * We wrote out the new section, with
2665 * a newline, now skip the old
2666 * section's length
2667 */
2668 output += offset + i;
2669 if (strlen(output) > 0) {
2670 /*
2671 * More content means there's
2672 * a declaration to put on the
2673 * next line; indent with a
2674 * tab
2675 */
2676 output -= 1;
2677 output[0] = '\t';
2678 }
0667fcfb 2679 }
118f8b24 2680 remove = 0;
0667fcfb 2681 }
118f8b24
PB
2682 if (remove)
2683 continue;
9a5abfc7
AV
2684 length = strlen(output);
2685 if (write_in_full(out_fd, output, length) != length) {
b4fb09e4 2686 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2687 goto out;
2688 }
0667fcfb 2689 }
fc1905bb 2690 fclose(config_file);
6e45b43f 2691commit_and_out:
4ed7cd3a 2692 if (commit_lock_file(lock) < 0)
f0658ec9
NTND
2693 ret = error_errno("could not write config file %s",
2694 config_filename);
8b590075 2695out:
c06fa62d
NTND
2696 rollback_lock_file(lock);
2697out_no_rollback:
42bd39b5 2698 free(filename_buf);
0667fcfb
JS
2699 return ret;
2700}
40ea4ed9 2701
42bd39b5
JK
2702int git_config_rename_section(const char *old_name, const char *new_name)
2703{
4a7bb5ba 2704 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
2705}
2706
40ea4ed9
JH
2707/*
2708 * Call this to report error for your variable that should not
2709 * get a boolean value (i.e. "[my] var" means "true").
2710 */
a469a101 2711#undef config_error_nonbool
40ea4ed9
JH
2712int config_error_nonbool(const char *var)
2713{
8c3ca351 2714 return error("missing value for '%s'", var);
40ea4ed9 2715}
1b86bbb0
JK
2716
2717int parse_config_key(const char *var,
2718 const char *section,
2719 const char **subsection, int *subsection_len,
2720 const char **key)
2721{
1b86bbb0
JK
2722 const char *dot;
2723
2724 /* Does it start with "section." ? */
e3394fdc 2725 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
2726 return -1;
2727
2728 /*
2729 * Find the key; we don't know yet if we have a subsection, but we must
2730 * parse backwards from the end, since the subsection may have dots in
2731 * it, too.
2732 */
2733 dot = strrchr(var, '.');
2734 *key = dot + 1;
2735
2736 /* Did we have a subsection at all? */
e3394fdc 2737 if (dot == var) {
48f8d9f7
JK
2738 if (subsection) {
2739 *subsection = NULL;
2740 *subsection_len = 0;
2741 }
1b86bbb0
JK
2742 }
2743 else {
48f8d9f7
JK
2744 if (!subsection)
2745 return -1;
e3394fdc 2746 *subsection = var + 1;
1b86bbb0
JK
2747 *subsection_len = dot - *subsection;
2748 }
2749
2750 return 0;
2751}
473166b9
LS
2752
2753const char *current_config_origin_type(void)
2754{
1b8132d9 2755 int type;
0d44a2da
JK
2756 if (current_config_kvi)
2757 type = current_config_kvi->origin_type;
2758 else if(cf)
2759 type = cf->origin_type;
2760 else
3258258f 2761 die("BUG: current_config_origin_type called outside config callback");
1b8132d9
VA
2762
2763 switch (type) {
2764 case CONFIG_ORIGIN_BLOB:
2765 return "blob";
2766 case CONFIG_ORIGIN_FILE:
2767 return "file";
2768 case CONFIG_ORIGIN_STDIN:
2769 return "standard input";
2770 case CONFIG_ORIGIN_SUBMODULE_BLOB:
2771 return "submodule-blob";
2772 case CONFIG_ORIGIN_CMDLINE:
2773 return "command line";
2774 default:
2775 die("BUG: unknown config origin type");
2776 }
473166b9
LS
2777}
2778
2779const char *current_config_name(void)
2780{
0d44a2da
JK
2781 const char *name;
2782 if (current_config_kvi)
2783 name = current_config_kvi->filename;
2784 else if (cf)
2785 name = cf->name;
2786 else
3258258f 2787 die("BUG: current_config_name called outside config callback");
0d44a2da 2788 return name ? name : "";
473166b9 2789}
9acc5911
JK
2790
2791enum config_scope current_config_scope(void)
2792{
2793 if (current_config_kvi)
2794 return current_config_kvi->scope;
2795 else
2796 return current_parsing_scope;
473166b9 2797}