2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
15 typedef struct config_file {
16 struct config_file *prev;
25 static config_file *cf;
27 static int zlib_compression_seen;
29 const char *config_exclusive_filename = NULL;
31 static void lowercase(char *p)
37 void git_config_push_parameter(const char *text)
39 struct strbuf env = STRBUF_INIT;
40 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
42 strbuf_addstr(&env, old);
43 strbuf_addch(&env, ' ');
45 sq_quote_buf(&env, text);
46 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
50 int git_config_parse_parameter(const char *text,
51 config_fn_t fn, void *data)
54 pair = strbuf_split_str(text, '=', 2);
56 return error("bogus config parameter: %s", text);
57 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=')
58 strbuf_setlen(pair[0], pair[0]->len - 1);
61 strbuf_list_free(pair);
62 return error("bogus config parameter: %s", text);
64 lowercase(pair[0]->buf);
65 if (fn(pair[0]->buf, pair[1] ? pair[1]->buf : NULL, data) < 0) {
66 strbuf_list_free(pair);
69 strbuf_list_free(pair);
73 int git_config_from_parameters(config_fn_t fn, void *data)
75 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
77 const char **argv = NULL;
78 int nr = 0, alloc = 0;
83 /* sq_dequote will write over it */
86 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
88 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
91 for (i = 0; i < nr; i++) {
92 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
104 static int get_next_char(void)
110 if (cf && ((f = cf->f) != NULL)) {
113 /* DOS like systems */
130 static char *parse_value(void)
132 int quote = 0, comment = 0, space = 0;
134 strbuf_reset(&cf->value);
136 int c = get_next_char();
140 return cf->value.buf;
144 if (isspace(c) && !quote) {
150 if (c == ';' || c == '#') {
155 for (; space; space--)
156 strbuf_addch(&cf->value, ' ');
171 /* Some characters escape as themselves */
174 /* Reject unknown escape sequences */
178 strbuf_addch(&cf->value, c);
185 strbuf_addch(&cf->value, c);
189 static inline int iskeychar(int c)
191 return isalnum(c) || c == '-';
194 static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
199 /* Get the full name */
206 name[len++] = tolower(c);
211 while (c == ' ' || c == '\t')
218 value = parse_value();
222 return fn(name, value, data);
225 static int get_extended_base_var(char *name, int baselen, int c)
231 } while (isspace(c));
233 /* We require the format to be '[base "extension"]' */
236 name[baselen++] = '.';
239 int c = get_next_char();
250 if (baselen > MAXNAME / 2)
255 if (get_next_char() != ']')
260 static int get_base_var(char *name)
265 int c = get_next_char();
271 return get_extended_base_var(name, baselen, c);
272 if (!iskeychar(c) && c != '.')
274 if (baselen > MAXNAME / 2)
276 name[baselen++] = tolower(c);
280 static int git_parse_file(config_fn_t fn, void *data)
286 /* U+FEFF Byte Order Mark in UTF8 */
287 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
288 const unsigned char *bomptr = utf8_bom;
291 int c = get_next_char();
292 if (bomptr && *bomptr) {
293 /* We are at the file beginning; skip UTF8-encoded BOM
294 * if present. Sane editors won't put this in on their
295 * own, but e.g. Windows Notepad will do it happily. */
296 if ((unsigned char) c == *bomptr) {
300 /* Do not tolerate partial BOM. */
301 if (bomptr != utf8_bom)
303 /* No BOM at file beginning. Cool. */
313 if (comment || isspace(c))
315 if (c == '#' || c == ';') {
320 baselen = get_base_var(var);
323 var[baselen++] = '.';
329 var[baselen] = tolower(c);
330 if (get_value(fn, data, var, baselen+1) < 0)
333 die("bad config file line %d in %s", cf->linenr, cf->name);
336 static int parse_unit_factor(const char *end, unsigned long *val)
340 else if (!strcasecmp(end, "k")) {
344 else if (!strcasecmp(end, "m")) {
348 else if (!strcasecmp(end, "g")) {
349 *val *= 1024 * 1024 * 1024;
355 static int git_parse_long(const char *value, long *ret)
357 if (value && *value) {
359 long val = strtol(value, &end, 0);
360 unsigned long factor = 1;
361 if (!parse_unit_factor(end, &factor))
369 int git_parse_ulong(const char *value, unsigned long *ret)
371 if (value && *value) {
373 unsigned long val = strtoul(value, &end, 0);
374 if (!parse_unit_factor(end, &val))
382 static void die_bad_config(const char *name)
385 die("bad config value for '%s' in %s", name, cf->name);
386 die("bad config value for '%s'", name);
389 int git_config_int(const char *name, const char *value)
392 if (!git_parse_long(value, &ret))
393 die_bad_config(name);
397 unsigned long git_config_ulong(const char *name, const char *value)
400 if (!git_parse_ulong(value, &ret))
401 die_bad_config(name);
405 static int git_config_maybe_bool_text(const char *name, const char *value)
411 if (!strcasecmp(value, "true")
412 || !strcasecmp(value, "yes")
413 || !strcasecmp(value, "on"))
415 if (!strcasecmp(value, "false")
416 || !strcasecmp(value, "no")
417 || !strcasecmp(value, "off"))
422 int git_config_maybe_bool(const char *name, const char *value)
424 long v = git_config_maybe_bool_text(name, value);
427 if (git_parse_long(value, &v))
432 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
434 int v = git_config_maybe_bool_text(name, value);
440 return git_config_int(name, value);
443 int git_config_bool(const char *name, const char *value)
446 return !!git_config_bool_or_int(name, value, &discard);
449 int git_config_string(const char **dest, const char *var, const char *value)
452 return config_error_nonbool(var);
453 *dest = xstrdup(value);
457 int git_config_pathname(const char **dest, const char *var, const char *value)
460 return config_error_nonbool(var);
461 *dest = expand_user_path(value);
463 die("Failed to expand user dir in: '%s'", value);
467 static int git_default_core_config(const char *var, const char *value)
469 /* This needs a better name */
470 if (!strcmp(var, "core.filemode")) {
471 trust_executable_bit = git_config_bool(var, value);
474 if (!strcmp(var, "core.trustctime")) {
475 trust_ctime = git_config_bool(var, value);
479 if (!strcmp(var, "core.quotepath")) {
480 quote_path_fully = git_config_bool(var, value);
484 if (!strcmp(var, "core.symlinks")) {
485 has_symlinks = git_config_bool(var, value);
489 if (!strcmp(var, "core.ignorecase")) {
490 ignore_case = git_config_bool(var, value);
494 if (!strcmp(var, "core.attributesfile"))
495 return git_config_pathname(&git_attributes_file, var, value);
497 if (!strcmp(var, "core.bare")) {
498 is_bare_repository_cfg = git_config_bool(var, value);
502 if (!strcmp(var, "core.ignorestat")) {
503 assume_unchanged = git_config_bool(var, value);
507 if (!strcmp(var, "core.prefersymlinkrefs")) {
508 prefer_symlink_refs = git_config_bool(var, value);
512 if (!strcmp(var, "core.logallrefupdates")) {
513 log_all_ref_updates = git_config_bool(var, value);
517 if (!strcmp(var, "core.warnambiguousrefs")) {
518 warn_ambiguous_refs = git_config_bool(var, value);
522 if (!strcmp(var, "core.abbrev")) {
523 int abbrev = git_config_int(var, value);
524 if (abbrev < minimum_abbrev || abbrev > 40)
526 default_abbrev = abbrev;
530 if (!strcmp(var, "core.loosecompression")) {
531 int level = git_config_int(var, value);
533 level = Z_DEFAULT_COMPRESSION;
534 else if (level < 0 || level > Z_BEST_COMPRESSION)
535 die("bad zlib compression level %d", level);
536 zlib_compression_level = level;
537 zlib_compression_seen = 1;
541 if (!strcmp(var, "core.compression")) {
542 int level = git_config_int(var, value);
544 level = Z_DEFAULT_COMPRESSION;
545 else if (level < 0 || level > Z_BEST_COMPRESSION)
546 die("bad zlib compression level %d", level);
547 core_compression_level = level;
548 core_compression_seen = 1;
549 if (!zlib_compression_seen)
550 zlib_compression_level = level;
554 if (!strcmp(var, "core.packedgitwindowsize")) {
555 int pgsz_x2 = getpagesize() * 2;
556 packed_git_window_size = git_config_int(var, value);
558 /* This value must be multiple of (pagesize * 2) */
559 packed_git_window_size /= pgsz_x2;
560 if (packed_git_window_size < 1)
561 packed_git_window_size = 1;
562 packed_git_window_size *= pgsz_x2;
566 if (!strcmp(var, "core.bigfilethreshold")) {
567 long n = git_config_int(var, value);
568 big_file_threshold = 0 < n ? n : 0;
572 if (!strcmp(var, "core.packedgitlimit")) {
573 packed_git_limit = git_config_int(var, value);
577 if (!strcmp(var, "core.deltabasecachelimit")) {
578 delta_base_cache_limit = git_config_int(var, value);
582 if (!strcmp(var, "core.logpackaccess"))
583 return git_config_string(&log_pack_access, var, value);
585 if (!strcmp(var, "core.autocrlf")) {
586 if (value && !strcasecmp(value, "input")) {
587 if (core_eol == EOL_CRLF)
588 return error("core.autocrlf=input conflicts with core.eol=crlf");
589 auto_crlf = AUTO_CRLF_INPUT;
592 auto_crlf = git_config_bool(var, value);
596 if (!strcmp(var, "core.safecrlf")) {
597 if (value && !strcasecmp(value, "warn")) {
598 safe_crlf = SAFE_CRLF_WARN;
601 safe_crlf = git_config_bool(var, value);
605 if (!strcmp(var, "core.eol")) {
606 if (value && !strcasecmp(value, "lf"))
608 else if (value && !strcasecmp(value, "crlf"))
610 else if (value && !strcasecmp(value, "native"))
611 core_eol = EOL_NATIVE;
613 core_eol = EOL_UNSET;
614 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
615 return error("core.autocrlf=input conflicts with core.eol=crlf");
619 if (!strcmp(var, "core.notesref")) {
620 notes_ref_name = xstrdup(value);
624 if (!strcmp(var, "core.pager"))
625 return git_config_string(&pager_program, var, value);
627 if (!strcmp(var, "core.editor"))
628 return git_config_string(&editor_program, var, value);
630 if (!strcmp(var, "core.askpass"))
631 return git_config_string(&askpass_program, var, value);
633 if (!strcmp(var, "core.excludesfile"))
634 return git_config_pathname(&excludes_file, var, value);
636 if (!strcmp(var, "core.whitespace")) {
638 return config_error_nonbool(var);
639 whitespace_rule_cfg = parse_whitespace_rule(value);
643 if (!strcmp(var, "core.fsyncobjectfiles")) {
644 fsync_object_files = git_config_bool(var, value);
648 if (!strcmp(var, "core.preloadindex")) {
649 core_preload_index = git_config_bool(var, value);
653 if (!strcmp(var, "core.createobject")) {
654 if (!strcmp(value, "rename"))
655 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
656 else if (!strcmp(value, "link"))
657 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
659 die("Invalid mode for object creation: %s", value);
663 if (!strcmp(var, "core.sparsecheckout")) {
664 core_apply_sparse_checkout = git_config_bool(var, value);
668 /* Add other config variables here and to Documentation/config.txt. */
672 static int git_default_user_config(const char *var, const char *value)
674 if (!strcmp(var, "user.name")) {
676 return config_error_nonbool(var);
677 strlcpy(git_default_name, value, sizeof(git_default_name));
678 user_ident_explicitly_given |= IDENT_NAME_GIVEN;
682 if (!strcmp(var, "user.email")) {
684 return config_error_nonbool(var);
685 strlcpy(git_default_email, value, sizeof(git_default_email));
686 user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
690 /* Add other config variables here and to Documentation/config.txt. */
694 static int git_default_i18n_config(const char *var, const char *value)
696 if (!strcmp(var, "i18n.commitencoding"))
697 return git_config_string(&git_commit_encoding, var, value);
699 if (!strcmp(var, "i18n.logoutputencoding"))
700 return git_config_string(&git_log_output_encoding, var, value);
702 /* Add other config variables here and to Documentation/config.txt. */
706 static int git_default_branch_config(const char *var, const char *value)
708 if (!strcmp(var, "branch.autosetupmerge")) {
709 if (value && !strcasecmp(value, "always")) {
710 git_branch_track = BRANCH_TRACK_ALWAYS;
713 git_branch_track = git_config_bool(var, value);
716 if (!strcmp(var, "branch.autosetuprebase")) {
718 return config_error_nonbool(var);
719 else if (!strcmp(value, "never"))
720 autorebase = AUTOREBASE_NEVER;
721 else if (!strcmp(value, "local"))
722 autorebase = AUTOREBASE_LOCAL;
723 else if (!strcmp(value, "remote"))
724 autorebase = AUTOREBASE_REMOTE;
725 else if (!strcmp(value, "always"))
726 autorebase = AUTOREBASE_ALWAYS;
728 return error("Malformed value for %s", var);
732 /* Add other config variables here and to Documentation/config.txt. */
736 static int git_default_push_config(const char *var, const char *value)
738 if (!strcmp(var, "push.default")) {
740 return config_error_nonbool(var);
741 else if (!strcmp(value, "nothing"))
742 push_default = PUSH_DEFAULT_NOTHING;
743 else if (!strcmp(value, "matching"))
744 push_default = PUSH_DEFAULT_MATCHING;
745 else if (!strcmp(value, "upstream"))
746 push_default = PUSH_DEFAULT_UPSTREAM;
747 else if (!strcmp(value, "tracking")) /* deprecated */
748 push_default = PUSH_DEFAULT_UPSTREAM;
749 else if (!strcmp(value, "current"))
750 push_default = PUSH_DEFAULT_CURRENT;
752 error("Malformed value for %s: %s", var, value);
753 return error("Must be one of nothing, matching, "
754 "tracking or current.");
759 /* Add other config variables here and to Documentation/config.txt. */
763 static int git_default_mailmap_config(const char *var, const char *value)
765 if (!strcmp(var, "mailmap.file"))
766 return git_config_string(&git_mailmap_file, var, value);
768 /* Add other config variables here and to Documentation/config.txt. */
772 int git_default_config(const char *var, const char *value, void *dummy)
774 if (!prefixcmp(var, "core."))
775 return git_default_core_config(var, value);
777 if (!prefixcmp(var, "user."))
778 return git_default_user_config(var, value);
780 if (!prefixcmp(var, "i18n."))
781 return git_default_i18n_config(var, value);
783 if (!prefixcmp(var, "branch."))
784 return git_default_branch_config(var, value);
786 if (!prefixcmp(var, "push."))
787 return git_default_push_config(var, value);
789 if (!prefixcmp(var, "mailmap."))
790 return git_default_mailmap_config(var, value);
792 if (!prefixcmp(var, "advice."))
793 return git_default_advice_config(var, value);
795 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
796 pager_use_color = git_config_bool(var,value);
800 /* Add other config variables here and to Documentation/config.txt. */
804 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
807 FILE *f = fopen(filename, "r");
813 /* push config-file parsing state stack */
819 strbuf_init(&top.value, 1024);
822 ret = git_parse_file(fn, data);
824 /* pop config-file parsing state stack */
825 strbuf_release(&top.value);
833 const char *git_etc_gitconfig(void)
835 static const char *system_wide;
837 system_wide = system_path(ETC_GITCONFIG);
841 int git_env_bool(const char *k, int def)
843 const char *v = getenv(k);
844 return v ? git_config_bool(k, v) : def;
847 int git_config_system(void)
849 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
852 int git_config_early(config_fn_t fn, void *data, const char *repo_config)
854 int ret = 0, found = 0;
855 const char *home = NULL;
857 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
858 if (config_exclusive_filename)
859 return git_config_from_file(fn, config_exclusive_filename, data);
860 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
861 ret += git_config_from_file(fn, git_etc_gitconfig(),
866 home = getenv("HOME");
868 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
869 if (!access(user_config, R_OK)) {
870 ret += git_config_from_file(fn, user_config, data);
876 if (repo_config && !access(repo_config, R_OK)) {
877 ret += git_config_from_file(fn, repo_config, data);
881 switch (git_config_from_parameters(fn, data)) {
883 die("unable to parse command-line config");
885 case 0: /* found nothing */
887 default: /* found at least one item */
892 return ret == 0 ? found : ret;
895 int git_config(config_fn_t fn, void *data)
897 char *repo_config = NULL;
900 repo_config = git_pathdup("config");
901 ret = git_config_early(fn, data, repo_config);
908 * Find all the stuff for git_config_set() below.
911 #define MAX_MATCHES 512
917 regex_t *value_regex;
919 size_t offset[MAX_MATCHES];
920 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
924 static int matches(const char *key, const char *value)
926 return !strcmp(key, store.key) &&
927 (store.value_regex == NULL ||
928 (store.do_not_match ^
929 !regexec(store.value_regex, value, 0, NULL, 0)));
932 static int store_aux(const char *key, const char *value, void *cb)
938 switch (store.state) {
940 if (matches(key, value)) {
941 if (store.seen == 1 && store.multi_replace == 0) {
942 warning("%s has multiple values", key);
943 } else if (store.seen >= MAX_MATCHES) {
944 error("too many matches for %s", key);
948 store.offset[store.seen] = ftell(f);
954 * What we are looking for is in store.key (both
955 * section and var), and its section part is baselen
956 * long. We found key (again, both section and var).
957 * We would want to know if this key is in the same
958 * section as what we are looking for. We already
959 * know we are in the same section as what should
962 ep = strrchr(key, '.');
963 section_len = ep - key;
965 if ((section_len != store.baselen) ||
966 memcmp(key, store.key, section_len+1)) {
967 store.state = SECTION_END_SEEN;
972 * Do not increment matches: this is no match, but we
973 * just made sure we are in the desired section.
975 store.offset[store.seen] = ftell(f);
977 case SECTION_END_SEEN:
979 if (matches(key, value)) {
980 store.offset[store.seen] = ftell(f);
981 store.state = KEY_SEEN;
984 if (strrchr(key, '.') - key == store.baselen &&
985 !strncmp(key, store.key, store.baselen)) {
986 store.state = SECTION_SEEN;
987 store.offset[store.seen] = ftell(f);
994 static int write_error(const char *filename)
996 error("failed to write new configuration file %s", filename);
998 /* Same error code as "failed to rename". */
1002 static int store_write_section(int fd, const char *key)
1006 struct strbuf sb = STRBUF_INIT;
1008 dot = memchr(key, '.', store.baselen);
1010 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1011 for (i = dot - key + 1; i < store.baselen; i++) {
1012 if (key[i] == '"' || key[i] == '\\')
1013 strbuf_addch(&sb, '\\');
1014 strbuf_addch(&sb, key[i]);
1016 strbuf_addstr(&sb, "\"]\n");
1018 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1021 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1022 strbuf_release(&sb);
1027 static int store_write_pair(int fd, const char *key, const char *value)
1030 int length = strlen(key + store.baselen + 1);
1031 const char *quote = "";
1032 struct strbuf sb = STRBUF_INIT;
1035 * Check to see if the value needs to be surrounded with a dq pair.
1036 * Note that problematic characters are always backslash-quoted; this
1037 * check is about not losing leading or trailing SP and strings that
1038 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1039 * configuration parser.
1041 if (value[0] == ' ')
1043 for (i = 0; value[i]; i++)
1044 if (value[i] == ';' || value[i] == '#')
1046 if (i && value[i - 1] == ' ')
1049 strbuf_addf(&sb, "\t%.*s = %s",
1050 length, key + store.baselen + 1, quote);
1052 for (i = 0; value[i]; i++)
1055 strbuf_addstr(&sb, "\\n");
1058 strbuf_addstr(&sb, "\\t");
1062 strbuf_addch(&sb, '\\');
1064 strbuf_addch(&sb, value[i]);
1067 strbuf_addf(&sb, "%s\n", quote);
1069 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1070 strbuf_release(&sb);
1075 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1076 size_t offset_, int *found_bracket)
1078 size_t equal_offset = size, bracket_offset = size;
1082 for (offset = offset_-2; offset > 0
1083 && contents[offset] != '\n'; offset--)
1084 switch (contents[offset]) {
1085 case '=': equal_offset = offset; break;
1086 case ']': bracket_offset = offset; break;
1088 if (offset > 0 && contents[offset-1] == '\\') {
1092 if (bracket_offset < equal_offset) {
1094 offset = bracket_offset+1;
1101 int git_config_set(const char *key, const char *value)
1103 return git_config_set_multivar(key, value, NULL, 0);
1107 * Auxiliary function to sanity-check and split the key into the section
1108 * identifier and variable name.
1110 * Returns 0 on success, -1 when there is an invalid character in the key and
1111 * -2 if there is no section name in the key.
1113 * store_key - pointer to char* which will hold a copy of the key with
1114 * lowercase section and variable name
1115 * baselen - pointer to int which will hold the length of the
1116 * section + subsection part, can be NULL
1118 int git_config_parse_key(const char *key, char **store_key, int *baselen_)
1120 int i, dot, baselen;
1121 const char *last_dot = strrchr(key, '.');
1124 * Since "key" actually contains the section name and the real
1125 * key name separated by a dot, we have to know where the dot is.
1128 if (last_dot == NULL || last_dot == key) {
1129 error("key does not contain a section: %s", key);
1130 return -CONFIG_NO_SECTION_OR_NAME;
1134 error("key does not contain variable name: %s", key);
1135 return -CONFIG_NO_SECTION_OR_NAME;
1138 baselen = last_dot - key;
1140 *baselen_ = baselen;
1143 * Validate the key and while at it, lower case it for matching.
1145 *store_key = xmalloc(strlen(key) + 1);
1148 for (i = 0; key[i]; i++) {
1149 unsigned char c = key[i];
1152 /* Leave the extended basename untouched.. */
1153 if (!dot || i > baselen) {
1154 if (!iskeychar(c) ||
1155 (i == baselen + 1 && !isalpha(c))) {
1156 error("invalid key: %s", key);
1157 goto out_free_ret_1;
1160 } else if (c == '\n') {
1161 error("invalid key (newline): %s", key);
1162 goto out_free_ret_1;
1164 (*store_key)[i] = c;
1166 (*store_key)[i] = 0;
1172 return -CONFIG_INVALID_KEY;
1176 * If value==NULL, unset in (remove from) config,
1177 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1178 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1179 * else all matching key/values (regardless how many) are removed,
1180 * before the new pair is written.
1182 * Returns 0 on success.
1184 * This function does this:
1186 * - it locks the config file by creating ".git/config.lock"
1188 * - it then parses the config using store_aux() as validator to find
1189 * the position on the key/value pair to replace. If it is to be unset,
1190 * it must be found exactly once.
1192 * - the config file is mmap()ed and the part before the match (if any) is
1193 * written to the lock file, then the changed part and the rest.
1195 * - the config file is removed and the lock file rename()d to it.
1198 int git_config_set_multivar(const char *key, const char *value,
1199 const char *value_regex, int multi_replace)
1203 char *config_filename;
1204 struct lock_file *lock = NULL;
1206 if (config_exclusive_filename)
1207 config_filename = xstrdup(config_exclusive_filename);
1209 config_filename = git_pathdup("config");
1211 /* parse-key returns negative; flip the sign to feed exit(3) */
1212 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
1216 store.multi_replace = multi_replace;
1220 * The lock serves a purpose in addition to locking: the new
1221 * contents of .git/config will be written into it.
1223 lock = xcalloc(sizeof(struct lock_file), 1);
1224 fd = hold_lock_file_for_update(lock, config_filename, 0);
1226 error("could not lock config file %s: %s", config_filename, strerror(errno));
1228 ret = CONFIG_NO_LOCK;
1233 * If .git/config does not exist yet, write a minimal version.
1235 in_fd = open(config_filename, O_RDONLY);
1239 if ( ENOENT != errno ) {
1240 error("opening %s: %s", config_filename,
1242 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
1245 /* if nothing to unset, error out */
1246 if (value == NULL) {
1247 ret = CONFIG_NOTHING_SET;
1251 store.key = (char *)key;
1252 if (!store_write_section(fd, key) ||
1253 !store_write_pair(fd, key, value))
1258 size_t contents_sz, copy_begin, copy_end;
1259 int i, new_line = 0;
1261 if (value_regex == NULL)
1262 store.value_regex = NULL;
1264 if (value_regex[0] == '!') {
1265 store.do_not_match = 1;
1268 store.do_not_match = 0;
1270 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1271 if (regcomp(store.value_regex, value_regex,
1273 error("invalid pattern: %s", value_regex);
1274 free(store.value_regex);
1275 ret = CONFIG_INVALID_PATTERN;
1280 store.offset[0] = 0;
1281 store.state = START;
1285 * After this, store.offset will contain the *end* offset
1286 * of the last match, or remain at 0 if no match was found.
1287 * As a side effect, we make sure to transform only a valid
1288 * existing config file.
1290 if (git_config_from_file(store_aux, config_filename, NULL)) {
1291 error("invalid config file %s", config_filename);
1293 if (store.value_regex != NULL) {
1294 regfree(store.value_regex);
1295 free(store.value_regex);
1297 ret = CONFIG_INVALID_FILE;
1302 if (store.value_regex != NULL) {
1303 regfree(store.value_regex);
1304 free(store.value_regex);
1307 /* if nothing to unset, or too many matches, error out */
1308 if ((store.seen == 0 && value == NULL) ||
1309 (store.seen > 1 && multi_replace == 0)) {
1310 ret = CONFIG_NOTHING_SET;
1315 contents_sz = xsize_t(st.st_size);
1316 contents = xmmap(NULL, contents_sz, PROT_READ,
1317 MAP_PRIVATE, in_fd, 0);
1320 if (store.seen == 0)
1323 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1324 if (store.offset[i] == 0) {
1325 store.offset[i] = copy_end = contents_sz;
1326 } else if (store.state != KEY_SEEN) {
1327 copy_end = store.offset[i];
1329 copy_end = find_beginning_of_line(
1330 contents, contents_sz,
1331 store.offset[i]-2, &new_line);
1333 if (copy_end > 0 && contents[copy_end-1] != '\n')
1336 /* write the first part of the config */
1337 if (copy_end > copy_begin) {
1338 if (write_in_full(fd, contents + copy_begin,
1339 copy_end - copy_begin) <
1340 copy_end - copy_begin)
1343 write_str_in_full(fd, "\n") != 1)
1346 copy_begin = store.offset[i];
1349 /* write the pair (value == NULL means unset) */
1350 if (value != NULL) {
1351 if (store.state == START) {
1352 if (!store_write_section(fd, key))
1355 if (!store_write_pair(fd, key, value))
1359 /* write the rest of the config */
1360 if (copy_begin < contents_sz)
1361 if (write_in_full(fd, contents + copy_begin,
1362 contents_sz - copy_begin) <
1363 contents_sz - copy_begin)
1366 munmap(contents, contents_sz);
1369 if (commit_lock_file(lock) < 0) {
1370 error("could not commit config file %s", config_filename);
1371 ret = CONFIG_NO_WRITE;
1376 * lock is committed, so don't try to roll it back below.
1377 * NOTE: Since lockfile.c keeps a linked list of all created
1378 * lock_file structures, it isn't safe to free(lock). It's
1379 * better to just leave it hanging around.
1386 rollback_lock_file(lock);
1387 free(config_filename);
1391 ret = write_error(lock->filename);
1396 static int section_name_match (const char *buf, const char *name)
1398 int i = 0, j = 0, dot = 0;
1401 for (i = 1; buf[i] && buf[i] != ']'; i++) {
1402 if (!dot && isspace(buf[i])) {
1404 if (name[j++] != '.')
1406 for (i++; isspace(buf[i]); i++)
1412 if (buf[i] == '\\' && dot)
1414 else if (buf[i] == '"' && dot) {
1415 for (i++; isspace(buf[i]); i++)
1419 if (buf[i] != name[j++])
1422 if (buf[i] == ']' && name[j] == 0) {
1424 * We match, now just find the right length offset by
1425 * gobbling up any whitespace after it, as well
1428 for (; buf[i] && isspace(buf[i]); i++)
1435 /* if new_name == NULL, the section is removed instead */
1436 int git_config_rename_section(const char *old_name, const char *new_name)
1438 int ret = 0, remove = 0;
1439 char *config_filename;
1440 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1445 if (config_exclusive_filename)
1446 config_filename = xstrdup(config_exclusive_filename);
1448 config_filename = git_pathdup("config");
1449 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1451 ret = error("could not lock config file %s", config_filename);
1455 if (!(config_file = fopen(config_filename, "rb"))) {
1456 /* no config file means nothing to rename, no error */
1457 goto unlock_and_out;
1460 while (fgets(buf, sizeof(buf), config_file)) {
1464 for (i = 0; buf[i] && isspace(buf[i]); i++)
1466 if (buf[i] == '[') {
1467 /* it's a section */
1468 int offset = section_name_match(&buf[i], old_name);
1471 if (new_name == NULL) {
1475 store.baselen = strlen(new_name);
1476 if (!store_write_section(out_fd, new_name)) {
1477 ret = write_error(lock->filename);
1481 * We wrote out the new section, with
1482 * a newline, now skip the old
1485 output += offset + i;
1486 if (strlen(output) > 0) {
1488 * More content means there's
1489 * a declaration to put on the
1490 * next line; indent with a
1501 length = strlen(output);
1502 if (write_in_full(out_fd, output, length) != length) {
1503 ret = write_error(lock->filename);
1507 fclose(config_file);
1509 if (commit_lock_file(lock) < 0)
1510 ret = error("could not commit config file %s", config_filename);
1512 free(config_filename);
1517 * Call this to report error for your variable that should not
1518 * get a boolean value (i.e. "[my] var" means "true").
1520 int config_error_nonbool(const char *var)
1522 return error("Missing value for '%s'", var);