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