2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
15 static FILE *config_file;
16 static const char *config_file_name;
17 static int config_linenr;
18 static int config_file_eof;
19 static int zlib_compression_seen;
21 const char *config_exclusive_filename = NULL;
25 struct config_item *next;
29 static struct config_item *config_parameters;
30 static struct config_item **config_parameters_tail = &config_parameters;
32 static void lowercase(char *p)
38 void git_config_push_parameter(const char *text)
40 struct strbuf env = STRBUF_INIT;
41 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
43 strbuf_addstr(&env, old);
44 strbuf_addch(&env, ' ');
46 sq_quote_buf(&env, text);
47 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
51 int git_config_parse_parameter(const char *text)
53 struct config_item *ct;
54 struct strbuf tmp = STRBUF_INIT;
56 strbuf_addstr(&tmp, text);
57 pair = strbuf_split(&tmp, '=');
58 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=')
59 strbuf_setlen(pair[0], pair[0]->len - 1);
62 strbuf_list_free(pair);
65 ct = xcalloc(1, sizeof(struct config_item));
66 ct->name = strbuf_detach(pair[0], NULL);
69 ct->value = strbuf_detach(pair[1], NULL);
71 strbuf_list_free(pair);
73 *config_parameters_tail = ct;
74 config_parameters_tail = &ct->next;
78 int git_config_parse_environment(void) {
79 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
81 const char **argv = NULL;
82 int nr = 0, alloc = 0;
87 /* sq_dequote will write over it */
90 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
92 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
95 for (i = 0; i < nr; i++) {
96 if (git_config_parse_parameter(argv[i]) < 0) {
97 error("bogus config parameter: %s", argv[i]);
109 static int get_next_char(void)
115 if ((f = config_file) != NULL) {
118 /* DOS like systems */
135 static char *parse_value(void)
137 static char value[1024];
138 int quote = 0, comment = 0, len = 0, space = 0;
141 int c = get_next_char();
142 if (len >= sizeof(value) - 1)
152 if (isspace(c) && !quote) {
158 if (c == ';' || c == '#') {
163 for (; space; space--)
179 /* Some characters escape as themselves */
182 /* Reject unknown escape sequences */
197 static inline int iskeychar(int c)
199 return isalnum(c) || c == '-';
202 static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
207 /* Get the full name */
214 name[len++] = tolower(c);
219 while (c == ' ' || c == '\t')
226 value = parse_value();
230 return fn(name, value, data);
233 static int get_extended_base_var(char *name, int baselen, int c)
239 } while (isspace(c));
241 /* We require the format to be '[base "extension"]' */
244 name[baselen++] = '.';
247 int c = get_next_char();
258 if (baselen > MAXNAME / 2)
263 if (get_next_char() != ']')
268 static int get_base_var(char *name)
273 int c = get_next_char();
279 return get_extended_base_var(name, baselen, c);
280 if (!iskeychar(c) && c != '.')
282 if (baselen > MAXNAME / 2)
284 name[baselen++] = tolower(c);
288 static int git_parse_file(config_fn_t fn, void *data)
292 static char var[MAXNAME];
294 /* U+FEFF Byte Order Mark in UTF8 */
295 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
296 const unsigned char *bomptr = utf8_bom;
299 int c = get_next_char();
300 if (bomptr && *bomptr) {
301 /* We are at the file beginning; skip UTF8-encoded BOM
302 * if present. Sane editors won't put this in on their
303 * own, but e.g. Windows Notepad will do it happily. */
304 if ((unsigned char) c == *bomptr) {
308 /* Do not tolerate partial BOM. */
309 if (bomptr != utf8_bom)
311 /* No BOM at file beginning. Cool. */
321 if (comment || isspace(c))
323 if (c == '#' || c == ';') {
328 baselen = get_base_var(var);
331 var[baselen++] = '.';
337 var[baselen] = tolower(c);
338 if (get_value(fn, data, var, baselen+1) < 0)
341 die("bad config file line %d in %s", config_linenr, config_file_name);
344 static int parse_unit_factor(const char *end, unsigned long *val)
348 else if (!strcasecmp(end, "k")) {
352 else if (!strcasecmp(end, "m")) {
356 else if (!strcasecmp(end, "g")) {
357 *val *= 1024 * 1024 * 1024;
363 static int git_parse_long(const char *value, long *ret)
365 if (value && *value) {
367 long val = strtol(value, &end, 0);
368 unsigned long factor = 1;
369 if (!parse_unit_factor(end, &factor))
377 int git_parse_ulong(const char *value, unsigned long *ret)
379 if (value && *value) {
381 unsigned long val = strtoul(value, &end, 0);
382 if (!parse_unit_factor(end, &val))
390 static void die_bad_config(const char *name)
392 if (config_file_name)
393 die("bad config value for '%s' in %s", name, config_file_name);
394 die("bad config value for '%s'", name);
397 int git_config_int(const char *name, const char *value)
400 if (!git_parse_long(value, &ret))
401 die_bad_config(name);
405 unsigned long git_config_ulong(const char *name, const char *value)
408 if (!git_parse_ulong(value, &ret))
409 die_bad_config(name);
413 int git_config_maybe_bool(const char *name, const char *value)
419 if (!strcasecmp(value, "true")
420 || !strcasecmp(value, "yes")
421 || !strcasecmp(value, "on"))
423 if (!strcasecmp(value, "false")
424 || !strcasecmp(value, "no")
425 || !strcasecmp(value, "off"))
430 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
432 int v = git_config_maybe_bool(name, value);
438 return git_config_int(name, value);
441 int git_config_bool(const char *name, const char *value)
444 return !!git_config_bool_or_int(name, value, &discard);
447 int git_config_string(const char **dest, const char *var, const char *value)
450 return config_error_nonbool(var);
451 *dest = xstrdup(value);
455 int git_config_pathname(const char **dest, const char *var, const char *value)
458 return config_error_nonbool(var);
459 *dest = expand_user_path(value);
461 die("Failed to expand user dir in: '%s'", value);
465 static int git_default_core_config(const char *var, const char *value)
467 /* This needs a better name */
468 if (!strcmp(var, "core.filemode")) {
469 trust_executable_bit = git_config_bool(var, value);
472 if (!strcmp(var, "core.trustctime")) {
473 trust_ctime = git_config_bool(var, value);
477 if (!strcmp(var, "core.quotepath")) {
478 quote_path_fully = git_config_bool(var, value);
482 if (!strcmp(var, "core.symlinks")) {
483 has_symlinks = git_config_bool(var, value);
487 if (!strcmp(var, "core.ignorecase")) {
488 ignore_case = git_config_bool(var, value);
492 if (!strcmp(var, "core.abbrevguard")) {
493 unique_abbrev_extra_length = git_config_int(var, value);
494 if (unique_abbrev_extra_length < 0)
495 unique_abbrev_extra_length = 0;
499 if (!strcmp(var, "core.bare")) {
500 is_bare_repository_cfg = git_config_bool(var, value);
504 if (!strcmp(var, "core.ignorestat")) {
505 assume_unchanged = git_config_bool(var, value);
509 if (!strcmp(var, "core.prefersymlinkrefs")) {
510 prefer_symlink_refs = git_config_bool(var, value);
514 if (!strcmp(var, "core.logallrefupdates")) {
515 log_all_ref_updates = git_config_bool(var, value);
519 if (!strcmp(var, "core.warnambiguousrefs")) {
520 warn_ambiguous_refs = git_config_bool(var, value);
524 if (!strcmp(var, "core.loosecompression")) {
525 int level = git_config_int(var, value);
527 level = Z_DEFAULT_COMPRESSION;
528 else if (level < 0 || level > Z_BEST_COMPRESSION)
529 die("bad zlib compression level %d", level);
530 zlib_compression_level = level;
531 zlib_compression_seen = 1;
535 if (!strcmp(var, "core.compression")) {
536 int level = git_config_int(var, value);
538 level = Z_DEFAULT_COMPRESSION;
539 else if (level < 0 || level > Z_BEST_COMPRESSION)
540 die("bad zlib compression level %d", level);
541 core_compression_level = level;
542 core_compression_seen = 1;
543 if (!zlib_compression_seen)
544 zlib_compression_level = level;
548 if (!strcmp(var, "core.packedgitwindowsize")) {
549 int pgsz_x2 = getpagesize() * 2;
550 packed_git_window_size = git_config_int(var, value);
552 /* This value must be multiple of (pagesize * 2) */
553 packed_git_window_size /= pgsz_x2;
554 if (packed_git_window_size < 1)
555 packed_git_window_size = 1;
556 packed_git_window_size *= pgsz_x2;
560 if (!strcmp(var, "core.packedgitlimit")) {
561 packed_git_limit = git_config_int(var, value);
565 if (!strcmp(var, "core.deltabasecachelimit")) {
566 delta_base_cache_limit = git_config_int(var, value);
570 if (!strcmp(var, "core.autocrlf")) {
571 if (value && !strcasecmp(value, "input")) {
573 return error("core.autocrlf=input conflicts with core.eol=crlf");
574 auto_crlf = AUTO_CRLF_INPUT;
577 auto_crlf = git_config_bool(var, value);
581 if (!strcmp(var, "core.safecrlf")) {
582 if (value && !strcasecmp(value, "warn")) {
583 safe_crlf = SAFE_CRLF_WARN;
586 safe_crlf = git_config_bool(var, value);
590 if (!strcmp(var, "core.eol")) {
591 if (value && !strcasecmp(value, "lf"))
593 else if (value && !strcasecmp(value, "crlf"))
595 else if (value && !strcasecmp(value, "native"))
599 if (eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
600 return error("core.autocrlf=input conflicts with core.eol=crlf");
604 if (!strcmp(var, "core.notesref")) {
605 notes_ref_name = xstrdup(value);
609 if (!strcmp(var, "core.pager"))
610 return git_config_string(&pager_program, var, value);
612 if (!strcmp(var, "core.editor"))
613 return git_config_string(&editor_program, var, value);
615 if (!strcmp(var, "core.askpass"))
616 return git_config_string(&askpass_program, var, value);
618 if (!strcmp(var, "core.excludesfile"))
619 return git_config_pathname(&excludes_file, var, value);
621 if (!strcmp(var, "core.whitespace")) {
623 return config_error_nonbool(var);
624 whitespace_rule_cfg = parse_whitespace_rule(value);
628 if (!strcmp(var, "core.fsyncobjectfiles")) {
629 fsync_object_files = git_config_bool(var, value);
633 if (!strcmp(var, "core.preloadindex")) {
634 core_preload_index = git_config_bool(var, value);
638 if (!strcmp(var, "core.createobject")) {
639 if (!strcmp(value, "rename"))
640 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
641 else if (!strcmp(value, "link"))
642 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
644 die("Invalid mode for object creation: %s", value);
648 if (!strcmp(var, "core.sparsecheckout")) {
649 core_apply_sparse_checkout = git_config_bool(var, value);
653 /* Add other config variables here and to Documentation/config.txt. */
657 static int git_default_user_config(const char *var, const char *value)
659 if (!strcmp(var, "user.name")) {
661 return config_error_nonbool(var);
662 strlcpy(git_default_name, value, sizeof(git_default_name));
663 user_ident_explicitly_given |= IDENT_NAME_GIVEN;
667 if (!strcmp(var, "user.email")) {
669 return config_error_nonbool(var);
670 strlcpy(git_default_email, value, sizeof(git_default_email));
671 user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
675 /* Add other config variables here and to Documentation/config.txt. */
679 static int git_default_i18n_config(const char *var, const char *value)
681 if (!strcmp(var, "i18n.commitencoding"))
682 return git_config_string(&git_commit_encoding, var, value);
684 if (!strcmp(var, "i18n.logoutputencoding"))
685 return git_config_string(&git_log_output_encoding, var, value);
687 /* Add other config variables here and to Documentation/config.txt. */
691 static int git_default_branch_config(const char *var, const char *value)
693 if (!strcmp(var, "branch.autosetupmerge")) {
694 if (value && !strcasecmp(value, "always")) {
695 git_branch_track = BRANCH_TRACK_ALWAYS;
698 git_branch_track = git_config_bool(var, value);
701 if (!strcmp(var, "branch.autosetuprebase")) {
703 return config_error_nonbool(var);
704 else if (!strcmp(value, "never"))
705 autorebase = AUTOREBASE_NEVER;
706 else if (!strcmp(value, "local"))
707 autorebase = AUTOREBASE_LOCAL;
708 else if (!strcmp(value, "remote"))
709 autorebase = AUTOREBASE_REMOTE;
710 else if (!strcmp(value, "always"))
711 autorebase = AUTOREBASE_ALWAYS;
713 return error("Malformed value for %s", var);
717 /* Add other config variables here and to Documentation/config.txt. */
721 static int git_default_push_config(const char *var, const char *value)
723 if (!strcmp(var, "push.default")) {
725 return config_error_nonbool(var);
726 else if (!strcmp(value, "nothing"))
727 push_default = PUSH_DEFAULT_NOTHING;
728 else if (!strcmp(value, "matching"))
729 push_default = PUSH_DEFAULT_MATCHING;
730 else if (!strcmp(value, "tracking"))
731 push_default = PUSH_DEFAULT_TRACKING;
732 else if (!strcmp(value, "current"))
733 push_default = PUSH_DEFAULT_CURRENT;
735 error("Malformed value for %s: %s", var, value);
736 return error("Must be one of nothing, matching, "
737 "tracking or current.");
742 /* Add other config variables here and to Documentation/config.txt. */
746 static int git_default_mailmap_config(const char *var, const char *value)
748 if (!strcmp(var, "mailmap.file"))
749 return git_config_string(&git_mailmap_file, var, value);
751 /* Add other config variables here and to Documentation/config.txt. */
755 int git_default_config(const char *var, const char *value, void *dummy)
757 if (!prefixcmp(var, "core."))
758 return git_default_core_config(var, value);
760 if (!prefixcmp(var, "user."))
761 return git_default_user_config(var, value);
763 if (!prefixcmp(var, "i18n."))
764 return git_default_i18n_config(var, value);
766 if (!prefixcmp(var, "branch."))
767 return git_default_branch_config(var, value);
769 if (!prefixcmp(var, "push."))
770 return git_default_push_config(var, value);
772 if (!prefixcmp(var, "mailmap."))
773 return git_default_mailmap_config(var, value);
775 if (!prefixcmp(var, "advice."))
776 return git_default_advice_config(var, value);
778 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
779 pager_use_color = git_config_bool(var,value);
783 /* Add other config variables here and to Documentation/config.txt. */
787 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
790 FILE *f = fopen(filename, "r");
795 config_file_name = filename;
798 ret = git_parse_file(fn, data);
800 config_file_name = NULL;
805 const char *git_etc_gitconfig(void)
807 static const char *system_wide;
809 system_wide = system_path(ETC_GITCONFIG);
813 int git_env_bool(const char *k, int def)
815 const char *v = getenv(k);
816 return v ? git_config_bool(k, v) : def;
819 int git_config_system(void)
821 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
824 int git_config_global(void)
826 return !git_env_bool("GIT_CONFIG_NOGLOBAL", 0);
829 int git_config_from_parameters(config_fn_t fn, void *data)
831 static int loaded_environment;
832 const struct config_item *ct;
834 if (!loaded_environment) {
835 if (git_config_parse_environment() < 0)
837 loaded_environment = 1;
839 for (ct = config_parameters; ct; ct = ct->next)
840 if (fn(ct->name, ct->value, data) < 0)
845 int git_config(config_fn_t fn, void *data)
847 int ret = 0, found = 0;
848 char *repo_config = NULL;
849 const char *home = NULL;
851 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
852 if (config_exclusive_filename)
853 return git_config_from_file(fn, config_exclusive_filename, data);
854 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
855 ret += git_config_from_file(fn, git_etc_gitconfig(),
860 home = getenv("HOME");
861 if (git_config_global() && home) {
862 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
863 if (!access(user_config, R_OK)) {
864 ret += git_config_from_file(fn, user_config, data);
870 repo_config = git_pathdup("config");
871 if (!access(repo_config, R_OK)) {
872 ret += git_config_from_file(fn, repo_config, data);
877 ret += git_config_from_parameters(fn, data);
878 if (config_parameters)
881 return ret == 0 ? found : ret;
885 * Find all the stuff for git_config_set() below.
888 #define MAX_MATCHES 512
894 regex_t *value_regex;
896 size_t offset[MAX_MATCHES];
897 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
901 static int matches(const char *key, const char *value)
903 return !strcmp(key, store.key) &&
904 (store.value_regex == NULL ||
905 (store.do_not_match ^
906 !regexec(store.value_regex, value, 0, NULL, 0)));
909 static int store_aux(const char *key, const char *value, void *cb)
914 switch (store.state) {
916 if (matches(key, value)) {
917 if (store.seen == 1 && store.multi_replace == 0) {
918 warning("%s has multiple values", key);
919 } else if (store.seen >= MAX_MATCHES) {
920 error("too many matches for %s", key);
924 store.offset[store.seen] = ftell(config_file);
930 * What we are looking for is in store.key (both
931 * section and var), and its section part is baselen
932 * long. We found key (again, both section and var).
933 * We would want to know if this key is in the same
934 * section as what we are looking for. We already
935 * know we are in the same section as what should
938 ep = strrchr(key, '.');
939 section_len = ep - key;
941 if ((section_len != store.baselen) ||
942 memcmp(key, store.key, section_len+1)) {
943 store.state = SECTION_END_SEEN;
948 * Do not increment matches: this is no match, but we
949 * just made sure we are in the desired section.
951 store.offset[store.seen] = ftell(config_file);
953 case SECTION_END_SEEN:
955 if (matches(key, value)) {
956 store.offset[store.seen] = ftell(config_file);
957 store.state = KEY_SEEN;
960 if (strrchr(key, '.') - key == store.baselen &&
961 !strncmp(key, store.key, store.baselen)) {
962 store.state = SECTION_SEEN;
963 store.offset[store.seen] = ftell(config_file);
970 static int write_error(const char *filename)
972 error("failed to write new configuration file %s", filename);
974 /* Same error code as "failed to rename". */
978 static int store_write_section(int fd, const char *key)
982 struct strbuf sb = STRBUF_INIT;
984 dot = memchr(key, '.', store.baselen);
986 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
987 for (i = dot - key + 1; i < store.baselen; i++) {
988 if (key[i] == '"' || key[i] == '\\')
989 strbuf_addch(&sb, '\\');
990 strbuf_addch(&sb, key[i]);
992 strbuf_addstr(&sb, "\"]\n");
994 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
997 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1003 static int store_write_pair(int fd, const char *key, const char *value)
1006 int length = strlen(key + store.baselen + 1);
1007 const char *quote = "";
1008 struct strbuf sb = STRBUF_INIT;
1011 * Check to see if the value needs to be surrounded with a dq pair.
1012 * Note that problematic characters are always backslash-quoted; this
1013 * check is about not losing leading or trailing SP and strings that
1014 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1015 * configuration parser.
1017 if (value[0] == ' ')
1019 for (i = 0; value[i]; i++)
1020 if (value[i] == ';' || value[i] == '#')
1022 if (i && value[i - 1] == ' ')
1025 strbuf_addf(&sb, "\t%.*s = %s",
1026 length, key + store.baselen + 1, quote);
1028 for (i = 0; value[i]; i++)
1031 strbuf_addstr(&sb, "\\n");
1034 strbuf_addstr(&sb, "\\t");
1038 strbuf_addch(&sb, '\\');
1040 strbuf_addch(&sb, value[i]);
1043 strbuf_addf(&sb, "%s\n", quote);
1045 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1046 strbuf_release(&sb);
1051 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1052 size_t offset_, int *found_bracket)
1054 size_t equal_offset = size, bracket_offset = size;
1058 for (offset = offset_-2; offset > 0
1059 && contents[offset] != '\n'; offset--)
1060 switch (contents[offset]) {
1061 case '=': equal_offset = offset; break;
1062 case ']': bracket_offset = offset; break;
1064 if (offset > 0 && contents[offset-1] == '\\') {
1068 if (bracket_offset < equal_offset) {
1070 offset = bracket_offset+1;
1077 int git_config_set(const char *key, const char *value)
1079 return git_config_set_multivar(key, value, NULL, 0);
1083 * If value==NULL, unset in (remove from) config,
1084 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1085 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1086 * else all matching key/values (regardless how many) are removed,
1087 * before the new pair is written.
1089 * Returns 0 on success.
1091 * This function does this:
1093 * - it locks the config file by creating ".git/config.lock"
1095 * - it then parses the config using store_aux() as validator to find
1096 * the position on the key/value pair to replace. If it is to be unset,
1097 * it must be found exactly once.
1099 * - the config file is mmap()ed and the part before the match (if any) is
1100 * written to the lock file, then the changed part and the rest.
1102 * - the config file is removed and the lock file rename()d to it.
1105 int git_config_set_multivar(const char *key, const char *value,
1106 const char *value_regex, int multi_replace)
1111 char *config_filename;
1112 struct lock_file *lock = NULL;
1113 const char *last_dot = strrchr(key, '.');
1115 if (config_exclusive_filename)
1116 config_filename = xstrdup(config_exclusive_filename);
1118 config_filename = git_pathdup("config");
1121 * Since "key" actually contains the section name and the real
1122 * key name separated by a dot, we have to know where the dot is.
1125 if (last_dot == NULL) {
1126 error("key does not contain a section: %s", key);
1130 store.baselen = last_dot - key;
1132 store.multi_replace = multi_replace;
1135 * Validate the key and while at it, lower case it for matching.
1137 store.key = xmalloc(strlen(key) + 1);
1139 for (i = 0; key[i]; i++) {
1140 unsigned char c = key[i];
1143 /* Leave the extended basename untouched.. */
1144 if (!dot || i > store.baselen) {
1145 if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) {
1146 error("invalid key: %s", key);
1152 } else if (c == '\n') {
1153 error("invalid key (newline): %s", key);
1163 * The lock serves a purpose in addition to locking: the new
1164 * contents of .git/config will be written into it.
1166 lock = xcalloc(sizeof(struct lock_file), 1);
1167 fd = hold_lock_file_for_update(lock, config_filename, 0);
1169 error("could not lock config file %s: %s", config_filename, strerror(errno));
1176 * If .git/config does not exist yet, write a minimal version.
1178 in_fd = open(config_filename, O_RDONLY);
1182 if ( ENOENT != errno ) {
1183 error("opening %s: %s", config_filename,
1185 ret = 3; /* same as "invalid config file" */
1188 /* if nothing to unset, error out */
1189 if (value == NULL) {
1194 store.key = (char *)key;
1195 if (!store_write_section(fd, key) ||
1196 !store_write_pair(fd, key, value))
1201 size_t contents_sz, copy_begin, copy_end;
1202 int i, new_line = 0;
1204 if (value_regex == NULL)
1205 store.value_regex = NULL;
1207 if (value_regex[0] == '!') {
1208 store.do_not_match = 1;
1211 store.do_not_match = 0;
1213 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1214 if (regcomp(store.value_regex, value_regex,
1216 error("invalid pattern: %s", value_regex);
1217 free(store.value_regex);
1223 store.offset[0] = 0;
1224 store.state = START;
1228 * After this, store.offset will contain the *end* offset
1229 * of the last match, or remain at 0 if no match was found.
1230 * As a side effect, we make sure to transform only a valid
1231 * existing config file.
1233 if (git_config_from_file(store_aux, config_filename, NULL)) {
1234 error("invalid config file %s", config_filename);
1236 if (store.value_regex != NULL) {
1237 regfree(store.value_regex);
1238 free(store.value_regex);
1245 if (store.value_regex != NULL) {
1246 regfree(store.value_regex);
1247 free(store.value_regex);
1250 /* if nothing to unset, or too many matches, error out */
1251 if ((store.seen == 0 && value == NULL) ||
1252 (store.seen > 1 && multi_replace == 0)) {
1258 contents_sz = xsize_t(st.st_size);
1259 contents = xmmap(NULL, contents_sz, PROT_READ,
1260 MAP_PRIVATE, in_fd, 0);
1263 if (store.seen == 0)
1266 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1267 if (store.offset[i] == 0) {
1268 store.offset[i] = copy_end = contents_sz;
1269 } else if (store.state != KEY_SEEN) {
1270 copy_end = store.offset[i];
1272 copy_end = find_beginning_of_line(
1273 contents, contents_sz,
1274 store.offset[i]-2, &new_line);
1276 if (copy_end > 0 && contents[copy_end-1] != '\n')
1279 /* write the first part of the config */
1280 if (copy_end > copy_begin) {
1281 if (write_in_full(fd, contents + copy_begin,
1282 copy_end - copy_begin) <
1283 copy_end - copy_begin)
1286 write_str_in_full(fd, "\n") != 1)
1289 copy_begin = store.offset[i];
1292 /* write the pair (value == NULL means unset) */
1293 if (value != NULL) {
1294 if (store.state == START) {
1295 if (!store_write_section(fd, key))
1298 if (!store_write_pair(fd, key, value))
1302 /* write the rest of the config */
1303 if (copy_begin < contents_sz)
1304 if (write_in_full(fd, contents + copy_begin,
1305 contents_sz - copy_begin) <
1306 contents_sz - copy_begin)
1309 munmap(contents, contents_sz);
1312 if (commit_lock_file(lock) < 0) {
1313 error("could not commit config file %s", config_filename);
1319 * lock is committed, so don't try to roll it back below.
1320 * NOTE: Since lockfile.c keeps a linked list of all created
1321 * lock_file structures, it isn't safe to free(lock). It's
1322 * better to just leave it hanging around.
1329 rollback_lock_file(lock);
1330 free(config_filename);
1334 ret = write_error(lock->filename);
1339 static int section_name_match (const char *buf, const char *name)
1341 int i = 0, j = 0, dot = 0;
1344 for (i = 1; buf[i] && buf[i] != ']'; i++) {
1345 if (!dot && isspace(buf[i])) {
1347 if (name[j++] != '.')
1349 for (i++; isspace(buf[i]); i++)
1355 if (buf[i] == '\\' && dot)
1357 else if (buf[i] == '"' && dot) {
1358 for (i++; isspace(buf[i]); i++)
1362 if (buf[i] != name[j++])
1365 if (buf[i] == ']' && name[j] == 0) {
1367 * We match, now just find the right length offset by
1368 * gobbling up any whitespace after it, as well
1371 for (; buf[i] && isspace(buf[i]); i++)
1378 /* if new_name == NULL, the section is removed instead */
1379 int git_config_rename_section(const char *old_name, const char *new_name)
1381 int ret = 0, remove = 0;
1382 char *config_filename;
1383 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1387 if (config_exclusive_filename)
1388 config_filename = xstrdup(config_exclusive_filename);
1390 config_filename = git_pathdup("config");
1391 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1393 ret = error("could not lock config file %s", config_filename);
1397 if (!(config_file = fopen(config_filename, "rb"))) {
1398 /* no config file means nothing to rename, no error */
1399 goto unlock_and_out;
1402 while (fgets(buf, sizeof(buf), config_file)) {
1406 for (i = 0; buf[i] && isspace(buf[i]); i++)
1408 if (buf[i] == '[') {
1409 /* it's a section */
1410 int offset = section_name_match(&buf[i], old_name);
1413 if (new_name == NULL) {
1417 store.baselen = strlen(new_name);
1418 if (!store_write_section(out_fd, new_name)) {
1419 ret = write_error(lock->filename);
1423 * We wrote out the new section, with
1424 * a newline, now skip the old
1427 output += offset + i;
1428 if (strlen(output) > 0) {
1430 * More content means there's
1431 * a declaration to put on the
1432 * next line; indent with a
1443 length = strlen(output);
1444 if (write_in_full(out_fd, output, length) != length) {
1445 ret = write_error(lock->filename);
1449 fclose(config_file);
1451 if (commit_lock_file(lock) < 0)
1452 ret = error("could not commit config file %s", config_filename);
1454 free(config_filename);
1459 * Call this to report error for your variable that should not
1460 * get a boolean value (i.e. "[my] var" means "true").
1462 int config_error_nonbool(const char *var)
1464 return error("Missing value for '%s'", var);