Merge branch 'nd/conditional-config-in-early-config'
[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
4aad2f16 138 expanded = expand_user_path(path, 0);
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
86f95157 180 expanded = expand_user_path(pat->buf, 1);
3efd0bed
NTND
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
86f95157 194 strbuf_realpath(&path, cf->path, 1);
3efd0bed
NTND
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
c9672ba4 225 strbuf_realpath(&text, git_dir, 1);
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
37ee680d
DT
847static int git_parse_ssize_t(const char *value, ssize_t *ret)
848{
849 intmax_t tmp;
850 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
851 return 0;
852 *ret = tmp;
853 return 1;
854}
855
06bdc23b 856NORETURN
2f666581 857static void die_bad_number(const char *name, const char *value)
c1867cea 858{
078fe305
JNA
859 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
860
2f666581
JK
861 if (!value)
862 value = "";
863
1b8132d9 864 if (!(cf && cf->name))
078fe305
JNA
865 die(_("bad numeric config value '%s' for '%s': %s"),
866 value, name, error_type);
1b8132d9
VA
867
868 switch (cf->origin_type) {
869 case CONFIG_ORIGIN_BLOB:
078fe305
JNA
870 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
871 value, name, cf->name, error_type);
1b8132d9 872 case CONFIG_ORIGIN_FILE:
078fe305
JNA
873 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
874 value, name, cf->name, error_type);
1b8132d9 875 case CONFIG_ORIGIN_STDIN:
078fe305
JNA
876 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
877 value, name, error_type);
1b8132d9 878 case CONFIG_ORIGIN_SUBMODULE_BLOB:
078fe305
JNA
879 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
880 value, name, cf->name, error_type);
1b8132d9 881 case CONFIG_ORIGIN_CMDLINE:
078fe305
JNA
882 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
883 value, name, cf->name, error_type);
1b8132d9 884 default:
078fe305
JNA
885 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
886 value, name, cf->name, error_type);
1b8132d9 887 }
c1867cea
JK
888}
889
0b87b6e0
BD
890int git_config_int(const char *name, const char *value)
891{
42d194e9
JK
892 int ret;
893 if (!git_parse_int(value, &ret))
2f666581 894 die_bad_number(name, value);
0b87b6e0
BD
895 return ret;
896}
897
00160242
JK
898int64_t git_config_int64(const char *name, const char *value)
899{
900 int64_t ret;
901 if (!git_parse_int64(value, &ret))
902 die_bad_number(name, value);
0b87b6e0
BD
903 return ret;
904}
905
906unsigned long git_config_ulong(const char *name, const char *value)
907{
908 unsigned long ret;
909 if (!git_parse_ulong(value, &ret))
2f666581 910 die_bad_number(name, value);
0b87b6e0 911 return ret;
17712991
LT
912}
913
37ee680d
DT
914ssize_t git_config_ssize_t(const char *name, const char *value)
915{
916 ssize_t ret;
917 if (!git_parse_ssize_t(value, &ret))
918 die_bad_number(name, value);
919 return ret;
920}
921
9a549d43 922int git_parse_maybe_bool(const char *value)
17712991
LT
923{
924 if (!value)
925 return 1;
926 if (!*value)
927 return 0;
8420ccd8
JH
928 if (!strcasecmp(value, "true")
929 || !strcasecmp(value, "yes")
930 || !strcasecmp(value, "on"))
17712991 931 return 1;
8420ccd8
JH
932 if (!strcasecmp(value, "false")
933 || !strcasecmp(value, "no")
934 || !strcasecmp(value, "off"))
17712991 935 return 0;
8420ccd8
JH
936 return -1;
937}
938
b2be2f6a
JK
939int git_config_maybe_bool(const char *name, const char *value)
940{
9a549d43 941 int v = git_parse_maybe_bool(value);
b2be2f6a
JK
942 if (0 <= v)
943 return v;
42d194e9 944 if (git_parse_int(value, &v))
db6195ef 945 return !!v;
b2be2f6a
JK
946 return -1;
947}
948
8420ccd8
JH
949int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
950{
9a549d43 951 int v = git_parse_maybe_bool(value);
8420ccd8
JH
952 if (0 <= v) {
953 *is_bool = 1;
954 return v;
955 }
a53f2ec6 956 *is_bool = 0;
c35b0b58 957 return git_config_int(name, value);
17712991
LT
958}
959
a53f2ec6
JH
960int git_config_bool(const char *name, const char *value)
961{
962 int discard;
c35b0b58 963 return !!git_config_bool_or_int(name, value, &discard);
a53f2ec6
JH
964}
965
ea5105a5
CC
966int git_config_string(const char **dest, const char *var, const char *value)
967{
968 if (!value)
969 return config_error_nonbool(var);
970 *dest = xstrdup(value);
971 return 0;
972}
973
395de250
MM
974int git_config_pathname(const char **dest, const char *var, const char *value)
975{
976 if (!value)
977 return config_error_nonbool(var);
4aad2f16 978 *dest = expand_user_path(value, 0);
395de250 979 if (!*dest)
8262aaa2 980 die(_("failed to expand user dir in: '%s'"), value);
395de250
MM
981 return 0;
982}
983
806e2ad7 984static int git_default_core_config(const char *var, const char *value)
17712991
LT
985{
986 /* This needs a better name */
987 if (!strcmp(var, "core.filemode")) {
988 trust_executable_bit = git_config_bool(var, value);
989 return 0;
990 }
1ce4790b
AR
991 if (!strcmp(var, "core.trustctime")) {
992 trust_ctime = git_config_bool(var, value);
993 return 0;
994 }
c1b5d738 995 if (!strcmp(var, "core.checkstat")) {
c08e4d5b
RR
996 if (!strcasecmp(value, "default"))
997 check_stat = 1;
998 else if (!strcasecmp(value, "minimal"))
999 check_stat = 0;
1000 }
17712991 1001
9378c161
JH
1002 if (!strcmp(var, "core.quotepath")) {
1003 quote_path_fully = git_config_bool(var, value);
1004 return 0;
1005 }
1006
78a8d641
JS
1007 if (!strcmp(var, "core.symlinks")) {
1008 has_symlinks = git_config_bool(var, value);
1009 return 0;
1010 }
1011
0a9b88b7
LT
1012 if (!strcmp(var, "core.ignorecase")) {
1013 ignore_case = git_config_bool(var, value);
1014 return 0;
1015 }
1016
64589a03
JH
1017 if (!strcmp(var, "core.attributesfile"))
1018 return git_config_pathname(&git_attributes_file, var, value);
1019
867ad08a
ÆAB
1020 if (!strcmp(var, "core.hookspath"))
1021 return git_config_pathname(&git_hooks_path, var, value);
1022
7d1864ce
JH
1023 if (!strcmp(var, "core.bare")) {
1024 is_bare_repository_cfg = git_config_bool(var, value);
1025 return 0;
1026 }
1027
5f73076c
JH
1028 if (!strcmp(var, "core.ignorestat")) {
1029 assume_unchanged = git_config_bool(var, value);
1030 return 0;
1031 }
1032
e388c738
JH
1033 if (!strcmp(var, "core.prefersymlinkrefs")) {
1034 prefer_symlink_refs = git_config_bool(var, value);
f8348be3
JS
1035 return 0;
1036 }
1037
6de08ae6 1038 if (!strcmp(var, "core.logallrefupdates")) {
341fb286
CW
1039 if (value && !strcasecmp(value, "always"))
1040 log_all_ref_updates = LOG_REFS_ALWAYS;
1041 else if (git_config_bool(var, value))
1042 log_all_ref_updates = LOG_REFS_NORMAL;
1043 else
1044 log_all_ref_updates = LOG_REFS_NONE;
6de08ae6
SP
1045 return 0;
1046 }
1047
2f8acdb3
JH
1048 if (!strcmp(var, "core.warnambiguousrefs")) {
1049 warn_ambiguous_refs = git_config_bool(var, value);
1050 return 0;
1051 }
1052
a71f09fe 1053 if (!strcmp(var, "core.abbrev")) {
48d5014d
JH
1054 if (!value)
1055 return config_error_nonbool(var);
1056 if (!strcasecmp(value, "auto"))
1057 default_abbrev = -1;
1058 else {
1059 int abbrev = git_config_int(var, value);
1060 if (abbrev < minimum_abbrev || abbrev > 40)
1061 return error("abbrev length out of range: %d", abbrev);
1062 default_abbrev = abbrev;
1063 }
dce96489
LT
1064 return 0;
1065 }
1066
5b33cb1f
JK
1067 if (!strcmp(var, "core.disambiguate"))
1068 return set_disambiguate_hint_config(var, value);
1069
960ccca6 1070 if (!strcmp(var, "core.loosecompression")) {
12f6c308
JBH
1071 int level = git_config_int(var, value);
1072 if (level == -1)
1073 level = Z_DEFAULT_COMPRESSION;
1074 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1075 die(_("bad zlib compression level %d"), level);
12f6c308 1076 zlib_compression_level = level;
960ccca6
DH
1077 zlib_compression_seen = 1;
1078 return 0;
1079 }
1080
1081 if (!strcmp(var, "core.compression")) {
1082 int level = git_config_int(var, value);
1083 if (level == -1)
1084 level = Z_DEFAULT_COMPRESSION;
1085 else if (level < 0 || level > Z_BEST_COMPRESSION)
8262aaa2 1086 die(_("bad zlib compression level %d"), level);
960ccca6
DH
1087 core_compression_level = level;
1088 core_compression_seen = 1;
1089 if (!zlib_compression_seen)
1090 zlib_compression_level = level;
8de7eeb5
JH
1091 if (!pack_compression_seen)
1092 pack_compression_level = level;
12f6c308
JBH
1093 return 0;
1094 }
1095
60bb8b14 1096 if (!strcmp(var, "core.packedgitwindowsize")) {
5faaf246 1097 int pgsz_x2 = getpagesize() * 2;
ebaa1bd4 1098 packed_git_window_size = git_config_ulong(var, value);
5faaf246
JH
1099
1100 /* This value must be multiple of (pagesize * 2) */
1101 packed_git_window_size /= pgsz_x2;
1102 if (packed_git_window_size < 1)
1103 packed_git_window_size = 1;
1104 packed_git_window_size *= pgsz_x2;
60bb8b14
SP
1105 return 0;
1106 }
1107
15366280 1108 if (!strcmp(var, "core.bigfilethreshold")) {
ebaa1bd4 1109 big_file_threshold = git_config_ulong(var, value);
15366280
JH
1110 return 0;
1111 }
1112
77ccc5bb 1113 if (!strcmp(var, "core.packedgitlimit")) {
ebaa1bd4 1114 packed_git_limit = git_config_ulong(var, value);
77ccc5bb
SP
1115 return 0;
1116 }
1117
18bdec11 1118 if (!strcmp(var, "core.deltabasecachelimit")) {
ebaa1bd4 1119 delta_base_cache_limit = git_config_ulong(var, value);
18bdec11
SP
1120 return 0;
1121 }
1122
6c510bee 1123 if (!strcmp(var, "core.autocrlf")) {
d7f46334 1124 if (value && !strcasecmp(value, "input")) {
fd6cce9e 1125 auto_crlf = AUTO_CRLF_INPUT;
d7f46334
LT
1126 return 0;
1127 }
6c510bee
LT
1128 auto_crlf = git_config_bool(var, value);
1129 return 0;
1130 }
1131
21e5ad50
SP
1132 if (!strcmp(var, "core.safecrlf")) {
1133 if (value && !strcasecmp(value, "warn")) {
1134 safe_crlf = SAFE_CRLF_WARN;
1135 return 0;
1136 }
1137 safe_crlf = git_config_bool(var, value);
1138 return 0;
1139 }
1140
942e7747
EB
1141 if (!strcmp(var, "core.eol")) {
1142 if (value && !strcasecmp(value, "lf"))
ec70f52f 1143 core_eol = EOL_LF;
942e7747 1144 else if (value && !strcasecmp(value, "crlf"))
ec70f52f 1145 core_eol = EOL_CRLF;
942e7747 1146 else if (value && !strcasecmp(value, "native"))
ec70f52f 1147 core_eol = EOL_NATIVE;
942e7747 1148 else
ec70f52f 1149 core_eol = EOL_UNSET;
942e7747
EB
1150 return 0;
1151 }
1152
a97a7468
JS
1153 if (!strcmp(var, "core.notesref")) {
1154 notes_ref_name = xstrdup(value);
1155 return 0;
1156 }
1157
806e2ad7
LT
1158 if (!strcmp(var, "core.editor"))
1159 return git_config_string(&editor_program, var, value);
1160
eff80a9f 1161 if (!strcmp(var, "core.commentchar")) {
649409b7
JK
1162 if (!value)
1163 return config_error_nonbool(var);
ad524f83 1164 else if (!strcasecmp(value, "auto"))
84c9dc2c 1165 auto_comment_line_char = 1;
ad524f83 1166 else if (value[0] && !value[1]) {
649409b7 1167 comment_line_char = value[0];
84c9dc2c 1168 auto_comment_line_char = 0;
50b54fd7
NTND
1169 } else
1170 return error("core.commentChar should only be one character");
1171 return 0;
eff80a9f
JH
1172 }
1173
d3e7da89
AK
1174 if (!strcmp(var, "core.askpass"))
1175 return git_config_string(&askpass_program, var, value);
1176
806e2ad7 1177 if (!strcmp(var, "core.excludesfile"))
395de250 1178 return git_config_pathname(&excludes_file, var, value);
806e2ad7
LT
1179
1180 if (!strcmp(var, "core.whitespace")) {
1181 if (!value)
1182 return config_error_nonbool(var);
1183 whitespace_rule_cfg = parse_whitespace_rule(value);
1184 return 0;
1185 }
1186
aafe9fba
LT
1187 if (!strcmp(var, "core.fsyncobjectfiles")) {
1188 fsync_object_files = git_config_bool(var, value);
1189 return 0;
1190 }
1191
671c9b7e
LT
1192 if (!strcmp(var, "core.preloadindex")) {
1193 core_preload_index = git_config_bool(var, value);
1194 return 0;
1195 }
1196
348df166
JS
1197 if (!strcmp(var, "core.createobject")) {
1198 if (!strcmp(value, "rename"))
1199 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1200 else if (!strcmp(value, "link"))
1201 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1202 else
8262aaa2 1203 die(_("invalid mode for object creation: %s"), value);
be66a6c4
JS
1204 return 0;
1205 }
1206
08aefc9e
NTND
1207 if (!strcmp(var, "core.sparsecheckout")) {
1208 core_apply_sparse_checkout = git_config_bool(var, value);
1209 return 0;
1210 }
1211
76759c7d
TB
1212 if (!strcmp(var, "core.precomposeunicode")) {
1213 precomposed_unicode = git_config_bool(var, value);
1214 return 0;
1215 }
1216
a42643aa
JK
1217 if (!strcmp(var, "core.protecthfs")) {
1218 protect_hfs = git_config_bool(var, value);
1219 return 0;
1220 }
1221
2b4c6efc
JS
1222 if (!strcmp(var, "core.protectntfs")) {
1223 protect_ntfs = git_config_bool(var, value);
1224 return 0;
76759c7d
TB
1225 }
1226
f30afdab
JS
1227 if (!strcmp(var, "core.hidedotfiles")) {
1228 if (value && !strcasecmp(value, "dotgitonly"))
1229 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
1230 else
1231 hide_dotfiles = git_config_bool(var, value);
1232 return 0;
1233 }
1234
806e2ad7
LT
1235 /* Add other config variables here and to Documentation/config.txt. */
1236 return 0;
1237}
1238
1141f492 1239static int git_default_i18n_config(const char *var, const char *value)
d1364529 1240{
ea5105a5
CC
1241 if (!strcmp(var, "i18n.commitencoding"))
1242 return git_config_string(&git_commit_encoding, var, value);
d2c11a38 1243
ea5105a5
CC
1244 if (!strcmp(var, "i18n.logoutputencoding"))
1245 return git_config_string(&git_log_output_encoding, var, value);
d2c11a38 1246
1141f492
LT
1247 /* Add other config variables here and to Documentation/config.txt. */
1248 return 0;
1249}
039bc64e 1250
1141f492
LT
1251static int git_default_branch_config(const char *var, const char *value)
1252{
9ed36cfa
JS
1253 if (!strcmp(var, "branch.autosetupmerge")) {
1254 if (value && !strcasecmp(value, "always")) {
1255 git_branch_track = BRANCH_TRACK_ALWAYS;
1256 return 0;
1257 }
1258 git_branch_track = git_config_bool(var, value);
1259 return 0;
1260 }
c998ae9b
DS
1261 if (!strcmp(var, "branch.autosetuprebase")) {
1262 if (!value)
1263 return config_error_nonbool(var);
1264 else if (!strcmp(value, "never"))
1265 autorebase = AUTOREBASE_NEVER;
1266 else if (!strcmp(value, "local"))
1267 autorebase = AUTOREBASE_LOCAL;
1268 else if (!strcmp(value, "remote"))
1269 autorebase = AUTOREBASE_REMOTE;
1270 else if (!strcmp(value, "always"))
1271 autorebase = AUTOREBASE_ALWAYS;
1272 else
8c3ca351 1273 return error("malformed value for %s", var);
c998ae9b
DS
1274 return 0;
1275 }
a9cc857a 1276
1ab661dd 1277 /* Add other config variables here and to Documentation/config.txt. */
17712991
LT
1278 return 0;
1279}
1280
52153747
FAG
1281static int git_default_push_config(const char *var, const char *value)
1282{
1283 if (!strcmp(var, "push.default")) {
1284 if (!value)
1285 return config_error_nonbool(var);
1286 else if (!strcmp(value, "nothing"))
1287 push_default = PUSH_DEFAULT_NOTHING;
1288 else if (!strcmp(value, "matching"))
1289 push_default = PUSH_DEFAULT_MATCHING;
b55e6775
MM
1290 else if (!strcmp(value, "simple"))
1291 push_default = PUSH_DEFAULT_SIMPLE;
53c40311
JH
1292 else if (!strcmp(value, "upstream"))
1293 push_default = PUSH_DEFAULT_UPSTREAM;
1294 else if (!strcmp(value, "tracking")) /* deprecated */
1295 push_default = PUSH_DEFAULT_UPSTREAM;
52153747
FAG
1296 else if (!strcmp(value, "current"))
1297 push_default = PUSH_DEFAULT_CURRENT;
1298 else {
8c3ca351 1299 error("malformed value for %s: %s", var, value);
b55e6775
MM
1300 return error("Must be one of nothing, matching, simple, "
1301 "upstream or current.");
52153747
FAG
1302 }
1303 return 0;
1304 }
1305
1306 /* Add other config variables here and to Documentation/config.txt. */
1307 return 0;
1308}
1309
d551a488
MSO
1310static int git_default_mailmap_config(const char *var, const char *value)
1311{
1312 if (!strcmp(var, "mailmap.file"))
9352fd57 1313 return git_config_pathname(&git_mailmap_file, var, value);
08610900
JK
1314 if (!strcmp(var, "mailmap.blob"))
1315 return git_config_string(&git_mailmap_blob, var, value);
d551a488
MSO
1316
1317 /* Add other config variables here and to Documentation/config.txt. */
1318 return 0;
1319}
1320
1141f492
LT
1321int git_default_config(const char *var, const char *value, void *dummy)
1322{
59556548 1323 if (starts_with(var, "core."))
1141f492
LT
1324 return git_default_core_config(var, value);
1325
59556548 1326 if (starts_with(var, "user."))
9597921b 1327 return git_ident_config(var, value, dummy);
1141f492 1328
59556548 1329 if (starts_with(var, "i18n."))
1141f492
LT
1330 return git_default_i18n_config(var, value);
1331
59556548 1332 if (starts_with(var, "branch."))
1141f492
LT
1333 return git_default_branch_config(var, value);
1334
59556548 1335 if (starts_with(var, "push."))
52153747
FAG
1336 return git_default_push_config(var, value);
1337
59556548 1338 if (starts_with(var, "mailmap."))
d551a488
MSO
1339 return git_default_mailmap_config(var, value);
1340
59556548 1341 if (starts_with(var, "advice."))
75194438
JK
1342 return git_default_advice_config(var, value);
1343
1141f492
LT
1344 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1345 pager_use_color = git_config_bool(var,value);
1346 return 0;
1347 }
1348
568508e7
JH
1349 if (!strcmp(var, "pack.packsizelimit")) {
1350 pack_size_limit_cfg = git_config_ulong(var, value);
1351 return 0;
1352 }
8de7eeb5
JH
1353
1354 if (!strcmp(var, "pack.compression")) {
1355 int level = git_config_int(var, value);
1356 if (level == -1)
1357 level = Z_DEFAULT_COMPRESSION;
1358 else if (level < 0 || level > Z_BEST_COMPRESSION)
1359 die(_("bad pack compression level %d"), level);
1360 pack_compression_level = level;
1361 pack_compression_seen = 1;
1362 return 0;
1363 }
1364
1141f492
LT
1365 /* Add other config variables here and to Documentation/config.txt. */
1366 return 0;
1367}
1368
ca4b5de2 1369/*
b2dc0945 1370 * All source specific fields in the union, die_on_error, name and the callbacks
4d8dd149 1371 * fgetc, ungetc, ftell of top need to be initialized before calling
ca4b5de2
HV
1372 * this function.
1373 */
4d8dd149 1374static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
ca4b5de2
HV
1375{
1376 int ret;
1377
1378 /* push config-file parsing state stack */
1379 top->prev = cf;
1380 top->linenr = 1;
1381 top->eof = 0;
1382 strbuf_init(&top->value, 1024);
1383 strbuf_init(&top->var, 1024);
1384 cf = top;
1385
4d8dd149 1386 ret = git_parse_source(fn, data);
ca4b5de2
HV
1387
1388 /* pop config-file parsing state stack */
1389 strbuf_release(&top->value);
1390 strbuf_release(&top->var);
1391 cf = top->prev;
1392
1393 return ret;
1394}
1395
3caec73b 1396static int do_config_from_file(config_fn_t fn,
1b8132d9
VA
1397 const enum config_origin_type origin_type,
1398 const char *name, const char *path, FILE *f,
473166b9 1399 void *data)
17712991 1400{
3caec73b 1401 struct config_source top;
17712991 1402
3caec73b 1403 top.u.file = f;
473166b9 1404 top.origin_type = origin_type;
3caec73b
KS
1405 top.name = name;
1406 top.path = path;
1407 top.die_on_error = 1;
1408 top.do_fgetc = config_file_fgetc;
1409 top.do_ungetc = config_file_ungetc;
1410 top.do_ftell = config_file_ftell;
924aaf3e 1411
3caec73b
KS
1412 return do_config_from(&top, fn, data);
1413}
924aaf3e 1414
3caec73b
KS
1415static int git_config_from_stdin(config_fn_t fn, void *data)
1416{
1b8132d9 1417 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, data);
3caec73b
KS
1418}
1419
1420int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1421{
1422 int ret = -1;
1423 FILE *f;
924aaf3e 1424
3caec73b
KS
1425 f = fopen(filename, "r");
1426 if (f) {
260d408e 1427 flockfile(f);
1b8132d9 1428 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, filename, f, data);
260d408e 1429 funlockfile(f);
17712991
LT
1430 fclose(f);
1431 }
1432 return ret;
1433}
10bea152 1434
1b8132d9 1435int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
473166b9 1436 const char *name, const char *buf, size_t len, void *data)
1bc88819
HV
1437{
1438 struct config_source top;
1439
1440 top.u.buf.buf = buf;
1441 top.u.buf.len = len;
1442 top.u.buf.pos = 0;
473166b9 1443 top.origin_type = origin_type;
1bc88819 1444 top.name = name;
d14d4244 1445 top.path = NULL;
b2dc0945 1446 top.die_on_error = 0;
49d6cfa5
JK
1447 top.do_fgetc = config_buf_fgetc;
1448 top.do_ungetc = config_buf_ungetc;
1449 top.do_ftell = config_buf_ftell;
1bc88819
HV
1450
1451 return do_config_from(&top, fn, data);
1452}
1453
9ebf689a
BW
1454int git_config_from_blob_sha1(config_fn_t fn,
1455 const char *name,
1456 const unsigned char *sha1,
1457 void *data)
1bc88819
HV
1458{
1459 enum object_type type;
1460 char *buf;
1461 unsigned long size;
1462 int ret;
1463
1464 buf = read_sha1_file(sha1, &type, &size);
1465 if (!buf)
1466 return error("unable to load config blob object '%s'", name);
1467 if (type != OBJ_BLOB) {
1468 free(buf);
1469 return error("reference '%s' does not point to a blob", name);
1470 }
1471
1b8132d9 1472 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
1bc88819
HV
1473 free(buf);
1474
1475 return ret;
1476}
1477
1478static int git_config_from_blob_ref(config_fn_t fn,
1479 const char *name,
1480 void *data)
1481{
1482 unsigned char sha1[20];
1483
1484 if (get_sha1(name, sha1) < 0)
1485 return error("unable to resolve config blob '%s'", name);
1486 return git_config_from_blob_sha1(fn, name, sha1, data);
1487}
1488
506b17b1
JS
1489const char *git_etc_gitconfig(void)
1490{
7f0e39fa 1491 static const char *system_wide;
2de9de5e
SP
1492 if (!system_wide)
1493 system_wide = system_path(ETC_GITCONFIG);
7f0e39fa 1494 return system_wide;
506b17b1
JS
1495}
1496
23b0c478
SP
1497/*
1498 * Parse environment variable 'k' as a boolean (in various
1499 * possible spellings); if missing, use the default value 'def'.
1500 */
0ef37164 1501int git_env_bool(const char *k, int def)
ab88c363
JK
1502{
1503 const char *v = getenv(k);
1504 return v ? git_config_bool(k, v) : def;
1505}
1506
23b0c478
SP
1507/*
1508 * Parse environment variable 'k' as ulong with possibly a unit
1509 * suffix; if missing, use the default value 'val'.
1510 */
1511unsigned long git_env_ulong(const char *k, unsigned long val)
1512{
1513 const char *v = getenv(k);
1514 if (v && !git_parse_ulong(v, &val))
1515 die("failed to parse %s", k);
1516 return val;
1517}
1518
ab88c363
JK
1519int git_config_system(void)
1520{
1521 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1522}
1523
e145a0bc
NTND
1524static int do_git_config_sequence(const struct config_options *opts,
1525 config_fn_t fn, void *data)
4f629539 1526{
c72ee44b 1527 int ret = 0;
509adc33 1528 char *xdg_config = xdg_config_home("config");
4aad2f16 1529 char *user_config = expand_user_path("~/.gitconfig", 0);
e145a0bc
NTND
1530 char *repo_config;
1531
1532 if (opts->git_dir)
1533 repo_config = mkpathdup("%s/config", opts->git_dir);
1534 else if (have_git_dir())
1535 repo_config = git_pathdup("config");
1536 else
1537 repo_config = NULL;
5f1a63e0 1538
9acc5911 1539 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
c72ee44b 1540 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
dc871831
DB
1541 ret += git_config_from_file(fn, git_etc_gitconfig(),
1542 data);
5f1a63e0 1543
9acc5911 1544 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
c72ee44b 1545 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1546 ret += git_config_from_file(fn, xdg_config, data);
21cf3227 1547
c72ee44b 1548 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
21cf3227 1549 ret += git_config_from_file(fn, user_config, data);
5f1a63e0 1550
9acc5911 1551 current_parsing_scope = CONFIG_SCOPE_REPO;
c72ee44b 1552 if (repo_config && !access_or_die(repo_config, R_OK, 0))
aa387407 1553 ret += git_config_from_file(fn, repo_config, data);
8b1fa778 1554
9acc5911 1555 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
c72ee44b 1556 if (git_config_from_parameters(fn, data) < 0)
8262aaa2 1557 die(_("unable to parse command-line config"));
8b1fa778 1558
9acc5911 1559 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
21cf3227
HKNN
1560 free(xdg_config);
1561 free(user_config);
80181868 1562 free(repo_config);
c72ee44b 1563 return ret;
4f629539
JH
1564}
1565
c9b5e2a5 1566int git_config_with_options(config_fn_t fn, void *data,
c8985ce0 1567 struct git_config_source *config_source,
c48f4b37 1568 const struct config_options *opts)
dbdf5854 1569{
9b25a0b5
JK
1570 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1571
c48f4b37 1572 if (opts->respect_includes) {
9b25a0b5
JK
1573 inc.fn = fn;
1574 inc.data = data;
c48f4b37 1575 inc.opts = opts;
9b25a0b5
JK
1576 fn = git_config_include;
1577 data = &inc;
1578 }
dbdf5854 1579
c9b5e2a5
JK
1580 /*
1581 * If we have a specific filename, use it. Otherwise, follow the
1582 * regular lookup sequence.
1583 */
3caec73b
KS
1584 if (config_source && config_source->use_stdin)
1585 return git_config_from_stdin(fn, data);
1586 else if (config_source && config_source->file)
c8985ce0
KS
1587 return git_config_from_file(fn, config_source->file, data);
1588 else if (config_source && config_source->blob)
1589 return git_config_from_blob_ref(fn, config_source->blob, data);
c9b5e2a5 1590
e145a0bc 1591 return do_git_config_sequence(opts, fn, data);
dbdf5854
NTND
1592}
1593
155ef25f 1594static void git_config_raw(config_fn_t fn, void *data)
c9b5e2a5 1595{
c48f4b37
NTND
1596 struct config_options opts = {0};
1597
1598 opts.respect_includes = 1;
1599 if (git_config_with_options(fn, data, NULL, &opts) < 0)
aace4385
TA
1600 /*
1601 * git_config_with_options() normally returns only
c72ee44b 1602 * zero, as most errors are fatal, and
aace4385
TA
1603 * non-fatal potential errors are guarded by "if"
1604 * statements that are entered only when no error is
1605 * possible.
1606 *
1607 * If we ever encounter a non-fatal error, it means
1608 * something went really wrong and we should stop
1609 * immediately.
1610 */
3a39f61e 1611 die(_("unknown error occurred while reading the configuration files"));
c9b5e2a5
JK
1612}
1613
155ef25f 1614static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
c9b5e2a5 1615{
155ef25f
TA
1616 int i, value_index;
1617 struct string_list *values;
1618 struct config_set_element *entry;
1619 struct configset_list *list = &cs->list;
155ef25f
TA
1620
1621 for (i = 0; i < list->nr; i++) {
1622 entry = list->items[i].e;
1623 value_index = list->items[i].value_index;
1624 values = &entry->value_list;
0d44a2da
JK
1625
1626 current_config_kvi = values->items[value_index].util;
1627
1628 if (fn(entry->key, values->items[value_index].string, data) < 0)
1629 git_die_config_linenr(entry->key,
1630 current_config_kvi->filename,
1631 current_config_kvi->linenr);
1632
1633 current_config_kvi = NULL;
155ef25f
TA
1634 }
1635}
1636
0654aa57
JS
1637void read_early_config(config_fn_t cb, void *data)
1638{
c48f4b37 1639 struct config_options opts = {0};
1a27409a
JS
1640 struct strbuf buf = STRBUF_INIT;
1641
c48f4b37 1642 opts.respect_includes = 1;
0654aa57 1643
2185fde5
NTND
1644 if (have_git_dir())
1645 opts.git_dir = get_git_dir();
0654aa57 1646 /*
1a27409a
JS
1647 * When setup_git_directory() was not yet asked to discover the
1648 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1649 * is any repository config we should use (but unlike
1650 * setup_git_directory_gently(), no global state is changed, most
1651 * notably, the current working directory is still the same after the
1652 * call).
0654aa57 1653 */
2185fde5 1654 else if (discover_git_directory(&buf))
e145a0bc 1655 opts.git_dir = buf.buf;
2185fde5
NTND
1656
1657 git_config_with_options(cb, data, NULL, &opts);
0654aa57 1658
1a27409a 1659 strbuf_release(&buf);
0654aa57
JS
1660}
1661
155ef25f
TA
1662static void git_config_check_init(void);
1663
1664void git_config(config_fn_t fn, void *data)
1665{
1666 git_config_check_init();
1667 configset_iter(&the_config_set, fn, data);
c9b5e2a5
JK
1668}
1669
3c8687a7
TA
1670static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1671{
1672 struct config_set_element k;
1673 struct config_set_element *found_entry;
1674 char *normalized_key;
3c8687a7
TA
1675 /*
1676 * `key` may come from the user, so normalize it before using it
1677 * for querying entries from the hashmap.
1678 */
270cd9ea 1679 if (git_config_parse_key(key, &normalized_key, NULL))
3c8687a7
TA
1680 return NULL;
1681
1682 hashmap_entry_init(&k, strhash(normalized_key));
1683 k.key = normalized_key;
1684 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1685 free(normalized_key);
1686 return found_entry;
1687}
1688
1689static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1690{
1691 struct config_set_element *e;
3df8fd62 1692 struct string_list_item *si;
155ef25f 1693 struct configset_list_item *l_item;
3df8fd62
TA
1694 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1695
3c8687a7
TA
1696 e = configset_find_element(cs, key);
1697 /*
1698 * Since the keys are being fed by git_config*() callback mechanism, they
1699 * are already normalized. So simply add them without any further munging.
1700 */
1701 if (!e) {
1702 e = xmalloc(sizeof(*e));
1703 hashmap_entry_init(e, strhash(key));
1704 e->key = xstrdup(key);
1705 string_list_init(&e->value_list, 1);
1706 hashmap_add(&cs->config_hash, e);
1707 }
8c53f071 1708 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
155ef25f
TA
1709
1710 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1711 l_item = &cs->list.items[cs->list.nr++];
1712 l_item->e = e;
1713 l_item->value_index = e->value_list.nr - 1;
1714
3258258f
JK
1715 if (!cf)
1716 die("BUG: configset_add_value has no source");
1717 if (cf->name) {
3df8fd62
TA
1718 kv_info->filename = strintern(cf->name);
1719 kv_info->linenr = cf->linenr;
1b8132d9 1720 kv_info->origin_type = cf->origin_type;
3df8fd62
TA
1721 } else {
1722 /* for values read from `git_config_from_parameters()` */
1723 kv_info->filename = NULL;
1724 kv_info->linenr = -1;
1b8132d9 1725 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
3df8fd62 1726 }
9acc5911 1727 kv_info->scope = current_parsing_scope;
3df8fd62 1728 si->util = kv_info;
3c8687a7
TA
1729
1730 return 0;
1731}
1732
1733static int config_set_element_cmp(const struct config_set_element *e1,
1734 const struct config_set_element *e2, const void *unused)
1735{
1736 return strcmp(e1->key, e2->key);
1737}
1738
1739void git_configset_init(struct config_set *cs)
1740{
1741 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1742 cs->hash_initialized = 1;
155ef25f
TA
1743 cs->list.nr = 0;
1744 cs->list.alloc = 0;
1745 cs->list.items = NULL;
3c8687a7
TA
1746}
1747
1748void git_configset_clear(struct config_set *cs)
1749{
1750 struct config_set_element *entry;
1751 struct hashmap_iter iter;
1752 if (!cs->hash_initialized)
1753 return;
1754
1755 hashmap_iter_init(&cs->config_hash, &iter);
1756 while ((entry = hashmap_iter_next(&iter))) {
1757 free(entry->key);
3df8fd62 1758 string_list_clear(&entry->value_list, 1);
3c8687a7
TA
1759 }
1760 hashmap_free(&cs->config_hash, 1);
1761 cs->hash_initialized = 0;
155ef25f
TA
1762 free(cs->list.items);
1763 cs->list.nr = 0;
1764 cs->list.alloc = 0;
1765 cs->list.items = NULL;
3c8687a7
TA
1766}
1767
1768static int config_set_callback(const char *key, const char *value, void *cb)
1769{
1770 struct config_set *cs = cb;
1771 configset_add_value(cs, key, value);
1772 return 0;
1773}
1774
1775int git_configset_add_file(struct config_set *cs, const char *filename)
1776{
1777 return git_config_from_file(config_set_callback, filename, cs);
1778}
1779
1780int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1781{
1782 const struct string_list *values = NULL;
1783 /*
1784 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1785 * queried key in the files of the configset, the value returned will be the last
1786 * value in the value list for that key.
1787 */
1788 values = git_configset_get_value_multi(cs, key);
1789
1790 if (!values)
1791 return 1;
1792 assert(values->nr > 0);
1793 *value = values->items[values->nr - 1].string;
1794 return 0;
1795}
1796
1797const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1798{
1799 struct config_set_element *e = configset_find_element(cs, key);
1800 return e ? &e->value_list : NULL;
1801}
1802
1803int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1804{
1805 const char *value;
1806 if (!git_configset_get_value(cs, key, &value))
1807 return git_config_string(dest, key, value);
1808 else
1809 return 1;
1810}
1811
1812int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1813{
1814 return git_configset_get_string_const(cs, key, (const char **)dest);
1815}
1816
1817int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1818{
1819 const char *value;
1820 if (!git_configset_get_value(cs, key, &value)) {
1821 *dest = git_config_int(key, value);
1822 return 0;
1823 } else
1824 return 1;
1825}
1826
1827int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1828{
1829 const char *value;
1830 if (!git_configset_get_value(cs, key, &value)) {
1831 *dest = git_config_ulong(key, value);
1832 return 0;
1833 } else
1834 return 1;
1835}
1836
1837int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1838{
1839 const char *value;
1840 if (!git_configset_get_value(cs, key, &value)) {
1841 *dest = git_config_bool(key, value);
1842 return 0;
1843 } else
1844 return 1;
1845}
1846
1847int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1848 int *is_bool, int *dest)
1849{
1850 const char *value;
1851 if (!git_configset_get_value(cs, key, &value)) {
1852 *dest = git_config_bool_or_int(key, value, is_bool);
1853 return 0;
1854 } else
1855 return 1;
1856}
1857
1858int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1859{
1860 const char *value;
1861 if (!git_configset_get_value(cs, key, &value)) {
1862 *dest = git_config_maybe_bool(key, value);
1863 if (*dest == -1)
1864 return -1;
1865 return 0;
1866 } else
1867 return 1;
1868}
1869
1870int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1871{
1872 const char *value;
1873 if (!git_configset_get_value(cs, key, &value))
1874 return git_config_pathname(dest, key, value);
1875 else
1876 return 1;
1877}
1878
1879static void git_config_check_init(void)
1880{
1881 if (the_config_set.hash_initialized)
1882 return;
1883 git_configset_init(&the_config_set);
155ef25f 1884 git_config_raw(config_set_callback, &the_config_set);
3c8687a7
TA
1885}
1886
1887void git_config_clear(void)
1888{
1889 if (!the_config_set.hash_initialized)
1890 return;
1891 git_configset_clear(&the_config_set);
1892}
1893
1894int git_config_get_value(const char *key, const char **value)
1895{
1896 git_config_check_init();
1897 return git_configset_get_value(&the_config_set, key, value);
1898}
1899
1900const struct string_list *git_config_get_value_multi(const char *key)
1901{
1902 git_config_check_init();
1903 return git_configset_get_value_multi(&the_config_set, key);
1904}
1905
1906int git_config_get_string_const(const char *key, const char **dest)
1907{
5a80e97c 1908 int ret;
3c8687a7 1909 git_config_check_init();
5a80e97c
TA
1910 ret = git_configset_get_string_const(&the_config_set, key, dest);
1911 if (ret < 0)
1912 git_die_config(key, NULL);
1913 return ret;
3c8687a7
TA
1914}
1915
1916int git_config_get_string(const char *key, char **dest)
1917{
1918 git_config_check_init();
1919 return git_config_get_string_const(key, (const char **)dest);
1920}
1921
1922int git_config_get_int(const char *key, int *dest)
1923{
1924 git_config_check_init();
1925 return git_configset_get_int(&the_config_set, key, dest);
1926}
1927
1928int git_config_get_ulong(const char *key, unsigned long *dest)
1929{
1930 git_config_check_init();
1931 return git_configset_get_ulong(&the_config_set, key, dest);
1932}
1933
1934int git_config_get_bool(const char *key, int *dest)
1935{
1936 git_config_check_init();
1937 return git_configset_get_bool(&the_config_set, key, dest);
1938}
1939
1940int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1941{
1942 git_config_check_init();
1943 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1944}
1945
1946int git_config_get_maybe_bool(const char *key, int *dest)
1947{
1948 git_config_check_init();
1949 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1950}
1951
1952int git_config_get_pathname(const char *key, const char **dest)
1953{
5a80e97c 1954 int ret;
3c8687a7 1955 git_config_check_init();
5a80e97c
TA
1956 ret = git_configset_get_pathname(&the_config_set, key, dest);
1957 if (ret < 0)
1958 git_die_config(key, NULL);
1959 return ret;
1960}
1961
77d67977
CC
1962int git_config_get_expiry(const char *key, const char **output)
1963{
1964 int ret = git_config_get_string_const(key, output);
1965 if (ret)
1966 return ret;
1967 if (strcmp(*output, "now")) {
1968 unsigned long now = approxidate("now");
1969 if (approxidate(*output) >= now)
1970 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
1971 }
1972 return ret;
1973}
1974
435ec090
CC
1975int git_config_get_untracked_cache(void)
1976{
1977 int val = -1;
1978 const char *v;
1979
dae6c322
CC
1980 /* Hack for test programs like test-dump-untracked-cache */
1981 if (ignore_untracked_cache_config)
1982 return -1;
1983
435ec090
CC
1984 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
1985 return val;
1986
1987 if (!git_config_get_value("core.untrackedcache", &v)) {
1988 if (!strcasecmp(v, "keep"))
1989 return -1;
1990
f60ef2d6
CC
1991 error(_("unknown core.untrackedCache value '%s'; "
1992 "using 'keep' default value"), v);
435ec090
CC
1993 return -1;
1994 }
1995
1996 return -1; /* default value */
1997}
1998
1f44b09b
CC
1999int git_config_get_split_index(void)
2000{
2001 int val;
2002
2003 if (!git_config_get_maybe_bool("core.splitindex", &val))
2004 return val;
2005
2006 return -1; /* default value */
2007}
2008
72dcb7b3
CC
2009int git_config_get_max_percent_split_change(void)
2010{
2011 int val = -1;
2012
2013 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2014 if (0 <= val && val <= 100)
2015 return val;
2016
2017 return error(_("splitIndex.maxPercentChange value '%d' "
2018 "should be between 0 and 100"), val);
2019 }
2020
2021 return -1; /* default value */
2022}
2023
5a80e97c
TA
2024NORETURN
2025void git_die_config_linenr(const char *key, const char *filename, int linenr)
2026{
2027 if (!filename)
2028 die(_("unable to parse '%s' from command-line config"), key);
2029 else
2030 die(_("bad config variable '%s' in file '%s' at line %d"),
2031 key, filename, linenr);
2032}
2033
2034NORETURN __attribute__((format(printf, 2, 3)))
2035void git_die_config(const char *key, const char *err, ...)
2036{
2037 const struct string_list *values;
2038 struct key_value_info *kv_info;
2039
2040 if (err) {
2041 va_list params;
2042 va_start(params, err);
2043 vreportf("error: ", err, params);
2044 va_end(params);
2045 }
2046 values = git_config_get_value_multi(key);
2047 kv_info = values->items[values->nr - 1].util;
2048 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
3c8687a7
TA
2049}
2050
10bea152
JS
2051/*
2052 * Find all the stuff for git_config_set() below.
2053 */
4ddba79d 2054
10bea152
JS
2055static struct {
2056 int baselen;
4b25d091 2057 char *key;
f98d863d 2058 int do_not_match;
4b25d091 2059 regex_t *value_regex;
4ddba79d 2060 int multi_replace;
83786fa4
TR
2061 size_t *offset;
2062 unsigned int offset_alloc;
10bea152
JS
2063 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
2064 int seen;
2065} store;
2066
4b25d091 2067static int matches(const char *key, const char *value)
f98d863d 2068{
c1063be2
JK
2069 if (strcmp(key, store.key))
2070 return 0; /* not ours */
2071 if (!store.value_regex)
2072 return 1; /* always matches */
2073 if (store.value_regex == CONFIG_REGEX_NONE)
2074 return 0; /* never matches */
2075
2076 return store.do_not_match ^
2077 (value && !regexec(store.value_regex, value, 0, NULL, 0));
f98d863d
JS
2078}
2079
4b25d091 2080static int store_aux(const char *key, const char *value, void *cb)
10bea152 2081{
ae9ee41d
JH
2082 const char *ep;
2083 size_t section_len;
2084
10bea152
JS
2085 switch (store.state) {
2086 case KEY_SEEN:
f98d863d 2087 if (matches(key, value)) {
4ddba79d 2088 if (store.seen == 1 && store.multi_replace == 0) {
8262aaa2 2089 warning(_("%s has multiple values"), key);
10bea152 2090 }
4ddba79d 2091
83786fa4
TR
2092 ALLOC_GROW(store.offset, store.seen + 1,
2093 store.offset_alloc);
2094
49d6cfa5 2095 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2096 store.seen++;
2097 }
2098 break;
2099 case SECTION_SEEN:
ae9ee41d
JH
2100 /*
2101 * What we are looking for is in store.key (both
2102 * section and var), and its section part is baselen
2103 * long. We found key (again, both section and var).
2104 * We would want to know if this key is in the same
2105 * section as what we are looking for. We already
2106 * know we are in the same section as what should
2107 * hold store.key.
2108 */
2109 ep = strrchr(key, '.');
2110 section_len = ep - key;
2111
2112 if ((section_len != store.baselen) ||
2113 memcmp(key, store.key, section_len+1)) {
10bea152
JS
2114 store.state = SECTION_END_SEEN;
2115 break;
ae9ee41d
JH
2116 }
2117
2118 /*
2119 * Do not increment matches: this is no match, but we
2120 * just made sure we are in the desired section.
2121 */
83786fa4
TR
2122 ALLOC_GROW(store.offset, store.seen + 1,
2123 store.offset_alloc);
49d6cfa5 2124 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2125 /* fallthru */
2126 case SECTION_END_SEEN:
2127 case START:
f98d863d 2128 if (matches(key, value)) {
83786fa4
TR
2129 ALLOC_GROW(store.offset, store.seen + 1,
2130 store.offset_alloc);
49d6cfa5 2131 store.offset[store.seen] = cf->do_ftell(cf);
10bea152
JS
2132 store.state = KEY_SEEN;
2133 store.seen++;
d14f7764
LT
2134 } else {
2135 if (strrchr(key, '.') - key == store.baselen &&
bdf0ef08 2136 !strncmp(key, store.key, store.baselen)) {
93ddef3e 2137 store.state = SECTION_SEEN;
83786fa4
TR
2138 ALLOC_GROW(store.offset,
2139 store.seen + 1,
2140 store.offset_alloc);
49d6cfa5 2141 store.offset[store.seen] = cf->do_ftell(cf);
d14f7764 2142 }
bdf0ef08 2143 }
10bea152
JS
2144 }
2145 return 0;
2146}
2147
64c0d71c 2148static int write_error(const char *filename)
480c9e52 2149{
64c0d71c 2150 error("failed to write new configuration file %s", filename);
480c9e52
AW
2151
2152 /* Same error code as "failed to rename". */
2153 return 4;
2154}
2155
4b25d091 2156static int store_write_section(int fd, const char *key)
10bea152 2157{
cb891a59
KH
2158 const char *dot;
2159 int i, success;
f285a2d7 2160 struct strbuf sb = STRBUF_INIT;
d14f7764 2161
cb891a59 2162 dot = memchr(key, '.', store.baselen);
d14f7764 2163 if (dot) {
cb891a59
KH
2164 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
2165 for (i = dot - key + 1; i < store.baselen; i++) {
e5c349ba 2166 if (key[i] == '"' || key[i] == '\\')
cb891a59
KH
2167 strbuf_addch(&sb, '\\');
2168 strbuf_addch(&sb, key[i]);
d14f7764 2169 }
cb891a59
KH
2170 strbuf_addstr(&sb, "\"]\n");
2171 } else {
2172 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
d14f7764
LT
2173 }
2174
cb891a59
KH
2175 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2176 strbuf_release(&sb);
480c9e52 2177
cb891a59 2178 return success;
10bea152
JS
2179}
2180
4b25d091 2181static int store_write_pair(int fd, const char *key, const char *value)
10bea152 2182{
cb891a59
KH
2183 int i, success;
2184 int length = strlen(key + store.baselen + 1);
2185 const char *quote = "";
f285a2d7 2186 struct strbuf sb = STRBUF_INIT;
cdd4fb15 2187
6281f394
JM
2188 /*
2189 * Check to see if the value needs to be surrounded with a dq pair.
2190 * Note that problematic characters are always backslash-quoted; this
2191 * check is about not losing leading or trailing SP and strings that
2192 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2193 * configuration parser.
2194 */
cdd4fb15 2195 if (value[0] == ' ')
cb891a59 2196 quote = "\"";
cdd4fb15
BG
2197 for (i = 0; value[i]; i++)
2198 if (value[i] == ';' || value[i] == '#')
cb891a59
KH
2199 quote = "\"";
2200 if (i && value[i - 1] == ' ')
2201 quote = "\"";
2202
cb891a59
KH
2203 strbuf_addf(&sb, "\t%.*s = %s",
2204 length, key + store.baselen + 1, quote);
10bea152 2205
10bea152
JS
2206 for (i = 0; value[i]; i++)
2207 switch (value[i]) {
480c9e52 2208 case '\n':
cb891a59 2209 strbuf_addstr(&sb, "\\n");
480c9e52
AW
2210 break;
2211 case '\t':
cb891a59 2212 strbuf_addstr(&sb, "\\t");
480c9e52
AW
2213 break;
2214 case '"':
2215 case '\\':
cb891a59 2216 strbuf_addch(&sb, '\\');
480c9e52 2217 default:
cb891a59 2218 strbuf_addch(&sb, value[i]);
480c9e52
AW
2219 break;
2220 }
cb891a59
KH
2221 strbuf_addf(&sb, "%s\n", quote);
2222
2223 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2224 strbuf_release(&sb);
2225
2226 return success;
10bea152
JS
2227}
2228
4b25d091
FC
2229static ssize_t find_beginning_of_line(const char *contents, size_t size,
2230 size_t offset_, int *found_bracket)
4ddba79d 2231{
dc49cd76
SP
2232 size_t equal_offset = size, bracket_offset = size;
2233 ssize_t offset;
4ddba79d 2234
7a31cc0f 2235contline:
a6080a0a 2236 for (offset = offset_-2; offset > 0
4ddba79d
JS
2237 && contents[offset] != '\n'; offset--)
2238 switch (contents[offset]) {
2239 case '=': equal_offset = offset; break;
2240 case ']': bracket_offset = offset; break;
2241 }
7a31cc0f
FL
2242 if (offset > 0 && contents[offset-1] == '\\') {
2243 offset_ = offset;
2244 goto contline;
2245 }
4ddba79d
JS
2246 if (bracket_offset < equal_offset) {
2247 *found_bracket = 1;
2248 offset = bracket_offset+1;
2249 } else
2250 offset++;
2251
2252 return offset;
2253}
2254
30598ad0
PS
2255int git_config_set_in_file_gently(const char *config_filename,
2256 const char *key, const char *value)
5ec31182 2257{
30598ad0 2258 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
5ec31182
RR
2259}
2260
3d180648
PS
2261void git_config_set_in_file(const char *config_filename,
2262 const char *key, const char *value)
10bea152 2263{
3d180648 2264 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
b4c8aba6
PS
2265}
2266
30598ad0 2267int git_config_set_gently(const char *key, const char *value)
10bea152 2268{
30598ad0 2269 return git_config_set_multivar_gently(key, value, NULL, 0);
10bea152
JS
2270}
2271
3d180648 2272void git_config_set(const char *key, const char *value)
b4c8aba6 2273{
3d180648 2274 git_config_set_multivar(key, value, NULL, 0);
10bea152
JS
2275}
2276
2277/*
2278 * If value==NULL, unset in (remove from) config,
2279 * if value_regex!=NULL, disregard key/value pairs where value does not match.
c1063be2
JK
2280 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2281 * (only add a new one)
4ddba79d
JS
2282 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2283 * else all matching key/values (regardless how many) are removed,
2284 * before the new pair is written.
10bea152
JS
2285 *
2286 * Returns 0 on success.
2287 *
2288 * This function does this:
2289 *
2290 * - it locks the config file by creating ".git/config.lock"
2291 *
2292 * - it then parses the config using store_aux() as validator to find
2293 * the position on the key/value pair to replace. If it is to be unset,
2294 * it must be found exactly once.
2295 *
2296 * - the config file is mmap()ed and the part before the match (if any) is
2297 * written to the lock file, then the changed part and the rest.
2298 *
2299 * - the config file is removed and the lock file rename()d to it.
2300 *
2301 */
30598ad0
PS
2302int git_config_set_multivar_in_file_gently(const char *config_filename,
2303 const char *key, const char *value,
2304 const char *value_regex,
2305 int multi_replace)
10bea152 2306{
54d160ec 2307 int fd = -1, in_fd = -1;
dafc88b1 2308 int ret;
6cbf973c 2309 struct lock_file *lock = NULL;
0a5f5759 2310 char *filename_buf = NULL;
3a1b3126
JK
2311 char *contents = NULL;
2312 size_t contents_sz;
4ddba79d 2313
b09c53a3
LP
2314 /* parse-key returns negative; flip the sign to feed exit(3) */
2315 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2316 if (ret)
dafc88b1 2317 goto out_free;
b17e659d
JS
2318
2319 store.multi_replace = multi_replace;
10bea152 2320
0a5f5759
JK
2321 if (!config_filename)
2322 config_filename = filename_buf = git_pathdup("config");
10bea152
JS
2323
2324 /*
6cbf973c 2325 * The lock serves a purpose in addition to locking: the new
10bea152
JS
2326 * contents of .git/config will be written into it.
2327 */
f1064f6b 2328 lock = xcalloc(1, sizeof(struct lock_file));
6cbf973c
BS
2329 fd = hold_lock_file_for_update(lock, config_filename, 0);
2330 if (fd < 0) {
f0658ec9 2331 error_errno("could not lock config file %s", config_filename);
10bea152 2332 free(store.key);
7a397419 2333 ret = CONFIG_NO_LOCK;
dafc88b1 2334 goto out_free;
10bea152
JS
2335 }
2336
2337 /*
2338 * If .git/config does not exist yet, write a minimal version.
2339 */
88fb958b
AR
2340 in_fd = open(config_filename, O_RDONLY);
2341 if ( in_fd < 0 ) {
10bea152
JS
2342 free(store.key);
2343
88fb958b 2344 if ( ENOENT != errno ) {
f0658ec9 2345 error_errno("opening %s", config_filename);
7a397419 2346 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
dafc88b1 2347 goto out_free;
88fb958b 2348 }
10bea152
JS
2349 /* if nothing to unset, error out */
2350 if (value == NULL) {
7a397419 2351 ret = CONFIG_NOTHING_SET;
dafc88b1 2352 goto out_free;
10bea152
JS
2353 }
2354
4b25d091 2355 store.key = (char *)key;
480c9e52 2356 if (!store_write_section(fd, key) ||
93c1e079
JH
2357 !store_write_pair(fd, key, value))
2358 goto write_err_out;
2359 } else {
88fb958b 2360 struct stat st;
3a1b3126 2361 size_t copy_begin, copy_end;
dc49cd76 2362 int i, new_line = 0;
10bea152
JS
2363
2364 if (value_regex == NULL)
2365 store.value_regex = NULL;
c1063be2
JK
2366 else if (value_regex == CONFIG_REGEX_NONE)
2367 store.value_regex = CONFIG_REGEX_NONE;
10bea152 2368 else {
f98d863d
JS
2369 if (value_regex[0] == '!') {
2370 store.do_not_match = 1;
2371 value_regex++;
2372 } else
2373 store.do_not_match = 0;
2374
2d7320d0 2375 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
10bea152
JS
2376 if (regcomp(store.value_regex, value_regex,
2377 REG_EXTENDED)) {
64c0d71c 2378 error("invalid pattern: %s", value_regex);
10bea152 2379 free(store.value_regex);
7a397419 2380 ret = CONFIG_INVALID_PATTERN;
dafc88b1 2381 goto out_free;
10bea152
JS
2382 }
2383 }
2384
83786fa4 2385 ALLOC_GROW(store.offset, 1, store.offset_alloc);
4ddba79d 2386 store.offset[0] = 0;
10bea152
JS
2387 store.state = START;
2388 store.seen = 0;
2389
2390 /*
2391 * After this, store.offset will contain the *end* offset
2392 * of the last match, or remain at 0 if no match was found.
2393 * As a side effect, we make sure to transform only a valid
2394 * existing config file.
2395 */
ef90d6d4 2396 if (git_config_from_file(store_aux, config_filename, NULL)) {
64c0d71c 2397 error("invalid config file %s", config_filename);
10bea152 2398 free(store.key);
c1063be2
JK
2399 if (store.value_regex != NULL &&
2400 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2401 regfree(store.value_regex);
2402 free(store.value_regex);
2403 }
7a397419 2404 ret = CONFIG_INVALID_FILE;
dafc88b1 2405 goto out_free;
10bea152
JS
2406 }
2407
2408 free(store.key);
c1063be2
JK
2409 if (store.value_regex != NULL &&
2410 store.value_regex != CONFIG_REGEX_NONE) {
10bea152
JS
2411 regfree(store.value_regex);
2412 free(store.value_regex);
2413 }
2414
4ddba79d
JS
2415 /* if nothing to unset, or too many matches, error out */
2416 if ((store.seen == 0 && value == NULL) ||
2417 (store.seen > 1 && multi_replace == 0)) {
7a397419 2418 ret = CONFIG_NOTHING_SET;
dafc88b1 2419 goto out_free;
10bea152
JS
2420 }
2421
29647d79
NTND
2422 if (fstat(in_fd, &st) == -1) {
2423 error_errno(_("fstat on %s failed"), config_filename);
2424 ret = CONFIG_INVALID_FILE;
2425 goto out_free;
2426 }
2427
dc49cd76 2428 contents_sz = xsize_t(st.st_size);
1570856b
JK
2429 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2430 MAP_PRIVATE, in_fd, 0);
2431 if (contents == MAP_FAILED) {
0e8771f1
JK
2432 if (errno == ENODEV && S_ISDIR(st.st_mode))
2433 errno = EISDIR;
f0658ec9 2434 error_errno("unable to mmap '%s'", config_filename);
1570856b
JK
2435 ret = CONFIG_INVALID_FILE;
2436 contents = NULL;
2437 goto out_free;
2438 }
10bea152 2439 close(in_fd);
54d160ec 2440 in_fd = -1;
10bea152 2441
b4fb09e4 2442 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9 2443 error_errno("chmod on %s failed", get_lock_file_path(lock));
daa22c6f
EW
2444 ret = CONFIG_NO_WRITE;
2445 goto out_free;
2446 }
2447
4ddba79d
JS
2448 if (store.seen == 0)
2449 store.seen = 1;
2450
2451 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2452 if (store.offset[i] == 0) {
dc49cd76 2453 store.offset[i] = copy_end = contents_sz;
4ddba79d
JS
2454 } else if (store.state != KEY_SEEN) {
2455 copy_end = store.offset[i];
10bea152 2456 } else
4ddba79d 2457 copy_end = find_beginning_of_line(
dc49cd76 2458 contents, contents_sz,
4ddba79d
JS
2459 store.offset[i]-2, &new_line);
2460
02e5ba4a
JK
2461 if (copy_end > 0 && contents[copy_end-1] != '\n')
2462 new_line = 1;
2463
4ddba79d
JS
2464 /* write the first part of the config */
2465 if (copy_end > copy_begin) {
93c1e079
JH
2466 if (write_in_full(fd, contents + copy_begin,
2467 copy_end - copy_begin) <
2468 copy_end - copy_begin)
2469 goto write_err_out;
2470 if (new_line &&
2b7ca830 2471 write_str_in_full(fd, "\n") != 1)
93c1e079 2472 goto write_err_out;
4ddba79d
JS
2473 }
2474 copy_begin = store.offset[i];
10bea152
JS
2475 }
2476
10bea152
JS
2477 /* write the pair (value == NULL means unset) */
2478 if (value != NULL) {
93c1e079
JH
2479 if (store.state == START) {
2480 if (!store_write_section(fd, key))
2481 goto write_err_out;
480c9e52 2482 }
93c1e079
JH
2483 if (!store_write_pair(fd, key, value))
2484 goto write_err_out;
10bea152
JS
2485 }
2486
2487 /* write the rest of the config */
dc49cd76 2488 if (copy_begin < contents_sz)
93c1e079 2489 if (write_in_full(fd, contents + copy_begin,
dc49cd76
SP
2490 contents_sz - copy_begin) <
2491 contents_sz - copy_begin)
93c1e079 2492 goto write_err_out;
7a64592c
KB
2493
2494 munmap(contents, contents_sz);
2495 contents = NULL;
10bea152
JS
2496 }
2497
4ed7cd3a 2498 if (commit_lock_file(lock) < 0) {
f0658ec9 2499 error_errno("could not write config file %s", config_filename);
7a397419 2500 ret = CONFIG_NO_WRITE;
e831855e 2501 lock = NULL;
dafc88b1 2502 goto out_free;
10bea152
JS
2503 }
2504
6cbf973c
BS
2505 /*
2506 * lock is committed, so don't try to roll it back below.
2507 * NOTE: Since lockfile.c keeps a linked list of all created
2508 * lock_file structures, it isn't safe to free(lock). It's
2509 * better to just leave it hanging around.
2510 */
2511 lock = NULL;
dafc88b1
SH
2512 ret = 0;
2513
3c8687a7
TA
2514 /* Invalidate the config cache */
2515 git_config_clear();
2516
dafc88b1 2517out_free:
6cbf973c
BS
2518 if (lock)
2519 rollback_lock_file(lock);
0a5f5759 2520 free(filename_buf);
3a1b3126
JK
2521 if (contents)
2522 munmap(contents, contents_sz);
54d160ec
SS
2523 if (in_fd >= 0)
2524 close(in_fd);
dafc88b1 2525 return ret;
93c1e079
JH
2526
2527write_err_out:
b4fb09e4 2528 ret = write_error(get_lock_file_path(lock));
93c1e079
JH
2529 goto out_free;
2530
10bea152
JS
2531}
2532
3d180648
PS
2533void git_config_set_multivar_in_file(const char *config_filename,
2534 const char *key, const char *value,
2535 const char *value_regex, int multi_replace)
b4c8aba6 2536{
1cae428e
JK
2537 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2538 value_regex, multi_replace))
2539 return;
2540 if (value)
8c3ca351 2541 die(_("could not set '%s' to '%s'"), key, value);
1cae428e
JK
2542 else
2543 die(_("could not unset '%s'"), key);
b4c8aba6
PS
2544}
2545
30598ad0
PS
2546int git_config_set_multivar_gently(const char *key, const char *value,
2547 const char *value_regex, int multi_replace)
5ec31182 2548{
30598ad0
PS
2549 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2550 multi_replace);
5ec31182
RR
2551}
2552
3d180648
PS
2553void git_config_set_multivar(const char *key, const char *value,
2554 const char *value_regex, int multi_replace)
5ec31182 2555{
3d180648
PS
2556 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2557 multi_replace);
5ec31182
RR
2558}
2559
118f8b24
PB
2560static int section_name_match (const char *buf, const char *name)
2561{
2562 int i = 0, j = 0, dot = 0;
a4c0d463
AV
2563 if (buf[i] != '[')
2564 return 0;
2565 for (i = 1; buf[i] && buf[i] != ']'; i++) {
118f8b24
PB
2566 if (!dot && isspace(buf[i])) {
2567 dot = 1;
2568 if (name[j++] != '.')
2569 break;
2570 for (i++; isspace(buf[i]); i++)
2571 ; /* do nothing */
2572 if (buf[i] != '"')
2573 break;
2574 continue;
2575 }
2576 if (buf[i] == '\\' && dot)
2577 i++;
2578 else if (buf[i] == '"' && dot) {
2579 for (i++; isspace(buf[i]); i++)
2580 ; /* do_nothing */
2581 break;
2582 }
2583 if (buf[i] != name[j++])
2584 break;
2585 }
a4c0d463
AV
2586 if (buf[i] == ']' && name[j] == 0) {
2587 /*
2588 * We match, now just find the right length offset by
2589 * gobbling up any whitespace after it, as well
2590 */
2591 i++;
2592 for (; buf[i] && isspace(buf[i]); i++)
2593 ; /* do nothing */
2594 return i;
2595 }
2596 return 0;
118f8b24
PB
2597}
2598
94a35b1a
JK
2599static int section_name_is_ok(const char *name)
2600{
2601 /* Empty section names are bogus. */
2602 if (!*name)
2603 return 0;
2604
2605 /*
2606 * Before a dot, we must be alphanumeric or dash. After the first dot,
2607 * anything goes, so we can stop checking.
2608 */
2609 for (; *name && *name != '.'; name++)
2610 if (*name != '-' && !isalnum(*name))
2611 return 0;
2612 return 1;
2613}
2614
118f8b24 2615/* if new_name == NULL, the section is removed instead */
42bd39b5
JK
2616int git_config_rename_section_in_file(const char *config_filename,
2617 const char *old_name, const char *new_name)
0667fcfb 2618{
118f8b24 2619 int ret = 0, remove = 0;
42bd39b5 2620 char *filename_buf = NULL;
94a35b1a 2621 struct lock_file *lock;
0667fcfb
JS
2622 int out_fd;
2623 char buf[1024];
924aaf3e 2624 FILE *config_file;
daa22c6f 2625 struct stat st;
0667fcfb 2626
94a35b1a
JK
2627 if (new_name && !section_name_is_ok(new_name)) {
2628 ret = error("invalid section name: %s", new_name);
c06fa62d 2629 goto out_no_rollback;
94a35b1a
JK
2630 }
2631
42bd39b5
JK
2632 if (!config_filename)
2633 config_filename = filename_buf = git_pathdup("config");
2634
f1064f6b 2635 lock = xcalloc(1, sizeof(struct lock_file));
0667fcfb 2636 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
fc1905bb 2637 if (out_fd < 0) {
64c0d71c 2638 ret = error("could not lock config file %s", config_filename);
fc1905bb
JH
2639 goto out;
2640 }
0667fcfb 2641
fc1905bb 2642 if (!(config_file = fopen(config_filename, "rb"))) {
01ebb9dc 2643 /* no config file means nothing to rename, no error */
6e45b43f 2644 goto commit_and_out;
fc1905bb 2645 }
0667fcfb 2646
29647d79
NTND
2647 if (fstat(fileno(config_file), &st) == -1) {
2648 ret = error_errno(_("fstat on %s failed"), config_filename);
2649 goto out;
2650 }
daa22c6f 2651
b4fb09e4 2652 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
f0658ec9
NTND
2653 ret = error_errno("chmod on %s failed",
2654 get_lock_file_path(lock));
daa22c6f
EW
2655 goto out;
2656 }
2657
0667fcfb
JS
2658 while (fgets(buf, sizeof(buf), config_file)) {
2659 int i;
480c9e52 2660 int length;
9a5abfc7 2661 char *output = buf;
0667fcfb
JS
2662 for (i = 0; buf[i] && isspace(buf[i]); i++)
2663 ; /* do nothing */
2664 if (buf[i] == '[') {
2665 /* it's a section */
a4c0d463
AV
2666 int offset = section_name_match(&buf[i], old_name);
2667 if (offset > 0) {
118f8b24
PB
2668 ret++;
2669 if (new_name == NULL) {
2670 remove = 1;
0667fcfb
JS
2671 continue;
2672 }
0667fcfb 2673 store.baselen = strlen(new_name);
480c9e52 2674 if (!store_write_section(out_fd, new_name)) {
b4fb09e4 2675 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2676 goto out;
2677 }
9a5abfc7
AV
2678 /*
2679 * We wrote out the new section, with
2680 * a newline, now skip the old
2681 * section's length
2682 */
2683 output += offset + i;
2684 if (strlen(output) > 0) {
2685 /*
2686 * More content means there's
2687 * a declaration to put on the
2688 * next line; indent with a
2689 * tab
2690 */
2691 output -= 1;
2692 output[0] = '\t';
2693 }
0667fcfb 2694 }
118f8b24 2695 remove = 0;
0667fcfb 2696 }
118f8b24
PB
2697 if (remove)
2698 continue;
9a5abfc7
AV
2699 length = strlen(output);
2700 if (write_in_full(out_fd, output, length) != length) {
b4fb09e4 2701 ret = write_error(get_lock_file_path(lock));
480c9e52
AW
2702 goto out;
2703 }
0667fcfb 2704 }
fc1905bb 2705 fclose(config_file);
6e45b43f 2706commit_and_out:
4ed7cd3a 2707 if (commit_lock_file(lock) < 0)
f0658ec9
NTND
2708 ret = error_errno("could not write config file %s",
2709 config_filename);
8b590075 2710out:
c06fa62d
NTND
2711 rollback_lock_file(lock);
2712out_no_rollback:
42bd39b5 2713 free(filename_buf);
0667fcfb
JS
2714 return ret;
2715}
40ea4ed9 2716
42bd39b5
JK
2717int git_config_rename_section(const char *old_name, const char *new_name)
2718{
4a7bb5ba 2719 return git_config_rename_section_in_file(NULL, old_name, new_name);
42bd39b5
JK
2720}
2721
40ea4ed9
JH
2722/*
2723 * Call this to report error for your variable that should not
2724 * get a boolean value (i.e. "[my] var" means "true").
2725 */
a469a101 2726#undef config_error_nonbool
40ea4ed9
JH
2727int config_error_nonbool(const char *var)
2728{
8c3ca351 2729 return error("missing value for '%s'", var);
40ea4ed9 2730}
1b86bbb0
JK
2731
2732int parse_config_key(const char *var,
2733 const char *section,
2734 const char **subsection, int *subsection_len,
2735 const char **key)
2736{
1b86bbb0
JK
2737 const char *dot;
2738
2739 /* Does it start with "section." ? */
e3394fdc 2740 if (!skip_prefix(var, section, &var) || *var != '.')
1b86bbb0
JK
2741 return -1;
2742
2743 /*
2744 * Find the key; we don't know yet if we have a subsection, but we must
2745 * parse backwards from the end, since the subsection may have dots in
2746 * it, too.
2747 */
2748 dot = strrchr(var, '.');
2749 *key = dot + 1;
2750
2751 /* Did we have a subsection at all? */
e3394fdc 2752 if (dot == var) {
48f8d9f7
JK
2753 if (subsection) {
2754 *subsection = NULL;
2755 *subsection_len = 0;
2756 }
1b86bbb0
JK
2757 }
2758 else {
48f8d9f7
JK
2759 if (!subsection)
2760 return -1;
e3394fdc 2761 *subsection = var + 1;
1b86bbb0
JK
2762 *subsection_len = dot - *subsection;
2763 }
2764
2765 return 0;
2766}
473166b9
LS
2767
2768const char *current_config_origin_type(void)
2769{
1b8132d9 2770 int type;
0d44a2da
JK
2771 if (current_config_kvi)
2772 type = current_config_kvi->origin_type;
2773 else if(cf)
2774 type = cf->origin_type;
2775 else
3258258f 2776 die("BUG: current_config_origin_type called outside config callback");
1b8132d9
VA
2777
2778 switch (type) {
2779 case CONFIG_ORIGIN_BLOB:
2780 return "blob";
2781 case CONFIG_ORIGIN_FILE:
2782 return "file";
2783 case CONFIG_ORIGIN_STDIN:
2784 return "standard input";
2785 case CONFIG_ORIGIN_SUBMODULE_BLOB:
2786 return "submodule-blob";
2787 case CONFIG_ORIGIN_CMDLINE:
2788 return "command line";
2789 default:
2790 die("BUG: unknown config origin type");
2791 }
473166b9
LS
2792}
2793
2794const char *current_config_name(void)
2795{
0d44a2da
JK
2796 const char *name;
2797 if (current_config_kvi)
2798 name = current_config_kvi->filename;
2799 else if (cf)
2800 name = cf->name;
2801 else
3258258f 2802 die("BUG: current_config_name called outside config callback");
0d44a2da 2803 return name ? name : "";
473166b9 2804}
9acc5911
JK
2805
2806enum config_scope current_config_scope(void)
2807{
2808 if (current_config_kvi)
2809 return current_config_kvi->scope;
2810 else
2811 return current_parsing_scope;
473166b9 2812}