2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
12 #include "credential.h"
16 typedef struct config_file {
17 struct config_file *prev;
26 static config_file *cf;
28 static int zlib_compression_seen;
30 const char *config_exclusive_filename = NULL;
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,
52 config_fn_t fn, void *data)
55 pair = strbuf_split_str(text, '=', 2);
57 return error("bogus config parameter: %s", text);
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);
63 return error("bogus config parameter: %s", text);
65 lowercase(pair[0]->buf);
66 if (fn(pair[0]->buf, pair[1] ? pair[1]->buf : NULL, data) < 0) {
67 strbuf_list_free(pair);
70 strbuf_list_free(pair);
74 int git_config_from_parameters(config_fn_t fn, void *data)
76 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
78 const char **argv = NULL;
79 int nr = 0, alloc = 0;
84 /* sq_dequote will write over it */
87 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
89 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
92 for (i = 0; i < nr; i++) {
93 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
105 static int get_next_char(void)
111 if (cf && ((f = cf->f) != NULL)) {
114 /* DOS like systems */
131 static char *parse_value(void)
133 int quote = 0, comment = 0, space = 0;
135 strbuf_reset(&cf->value);
137 int c = get_next_char();
141 return cf->value.buf;
145 if (isspace(c) && !quote) {
151 if (c == ';' || c == '#') {
156 for (; space; space--)
157 strbuf_addch(&cf->value, ' ');
172 /* Some characters escape as themselves */
175 /* Reject unknown escape sequences */
179 strbuf_addch(&cf->value, c);
186 strbuf_addch(&cf->value, c);
190 static inline int iskeychar(int c)
192 return isalnum(c) || c == '-';
195 static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
200 /* Get the full name */
207 name[len++] = tolower(c);
212 while (c == ' ' || c == '\t')
219 value = parse_value();
223 return fn(name, value, data);
226 static int get_extended_base_var(char *name, int baselen, int c)
232 } while (isspace(c));
234 /* We require the format to be '[base "extension"]' */
237 name[baselen++] = '.';
240 int c = get_next_char();
251 if (baselen > MAXNAME / 2)
256 if (get_next_char() != ']')
261 static int get_base_var(char *name)
266 int c = get_next_char();
272 return get_extended_base_var(name, baselen, c);
273 if (!iskeychar(c) && c != '.')
275 if (baselen > MAXNAME / 2)
277 name[baselen++] = tolower(c);
281 static int git_parse_file(config_fn_t fn, void *data)
287 /* U+FEFF Byte Order Mark in UTF8 */
288 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
289 const unsigned char *bomptr = utf8_bom;
292 int c = get_next_char();
293 if (bomptr && *bomptr) {
294 /* We are at the file beginning; skip UTF8-encoded BOM
295 * if present. Sane editors won't put this in on their
296 * own, but e.g. Windows Notepad will do it happily. */
297 if ((unsigned char) c == *bomptr) {
301 /* Do not tolerate partial BOM. */
302 if (bomptr != utf8_bom)
304 /* No BOM at file beginning. Cool. */
314 if (comment || isspace(c))
316 if (c == '#' || c == ';') {
321 baselen = get_base_var(var);
324 var[baselen++] = '.';
330 var[baselen] = tolower(c);
331 if (get_value(fn, data, var, baselen+1) < 0)
334 die("bad config file line %d in %s", cf->linenr, cf->name);
337 static int parse_unit_factor(const char *end, unsigned long *val)
341 else if (!strcasecmp(end, "k")) {
345 else if (!strcasecmp(end, "m")) {
349 else if (!strcasecmp(end, "g")) {
350 *val *= 1024 * 1024 * 1024;
356 static int git_parse_long(const char *value, long *ret)
358 if (value && *value) {
360 long val = strtol(value, &end, 0);
361 unsigned long factor = 1;
362 if (!parse_unit_factor(end, &factor))
370 int git_parse_ulong(const char *value, unsigned long *ret)
372 if (value && *value) {
374 unsigned long val = strtoul(value, &end, 0);
375 if (!parse_unit_factor(end, &val))
383 static void die_bad_config(const char *name)
386 die("bad config value for '%s' in %s", name, cf->name);
387 die("bad config value for '%s'", name);
390 int git_config_int(const char *name, const char *value)
393 if (!git_parse_long(value, &ret))
394 die_bad_config(name);
398 unsigned long git_config_ulong(const char *name, const char *value)
401 if (!git_parse_ulong(value, &ret))
402 die_bad_config(name);
406 static int git_config_maybe_bool_text(const char *name, const char *value)
412 if (!strcasecmp(value, "true")
413 || !strcasecmp(value, "yes")
414 || !strcasecmp(value, "on"))
416 if (!strcasecmp(value, "false")
417 || !strcasecmp(value, "no")
418 || !strcasecmp(value, "off"))
423 int git_config_maybe_bool(const char *name, const char *value)
425 long v = git_config_maybe_bool_text(name, value);
428 if (git_parse_long(value, &v))
433 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
435 int v = git_config_maybe_bool_text(name, value);
441 return git_config_int(name, value);
444 int git_config_bool(const char *name, const char *value)
447 return !!git_config_bool_or_int(name, value, &discard);
450 int git_config_string(const char **dest, const char *var, const char *value)
453 return config_error_nonbool(var);
454 *dest = xstrdup(value);
458 int git_config_pathname(const char **dest, const char *var, const char *value)
461 return config_error_nonbool(var);
462 *dest = expand_user_path(value);
464 die("Failed to expand user dir in: '%s'", value);
468 static int git_default_core_config(const char *var, const char *value)
470 /* This needs a better name */
471 if (!strcmp(var, "core.filemode")) {
472 trust_executable_bit = git_config_bool(var, value);
475 if (!strcmp(var, "core.trustctime")) {
476 trust_ctime = git_config_bool(var, value);
480 if (!strcmp(var, "core.quotepath")) {
481 quote_path_fully = git_config_bool(var, value);
485 if (!strcmp(var, "core.symlinks")) {
486 has_symlinks = git_config_bool(var, value);
490 if (!strcmp(var, "core.ignorecase")) {
491 ignore_case = git_config_bool(var, value);
495 if (!strcmp(var, "core.bare")) {
496 is_bare_repository_cfg = git_config_bool(var, value);
500 if (!strcmp(var, "core.ignorestat")) {
501 assume_unchanged = git_config_bool(var, value);
505 if (!strcmp(var, "core.prefersymlinkrefs")) {
506 prefer_symlink_refs = git_config_bool(var, value);
510 if (!strcmp(var, "core.logallrefupdates")) {
511 log_all_ref_updates = git_config_bool(var, value);
515 if (!strcmp(var, "core.warnambiguousrefs")) {
516 warn_ambiguous_refs = git_config_bool(var, value);
520 if (!strcmp(var, "core.abbrev")) {
521 int abbrev = git_config_int(var, value);
522 if (abbrev < minimum_abbrev || abbrev > 40)
524 default_abbrev = abbrev;
528 if (!strcmp(var, "core.loosecompression")) {
529 int level = git_config_int(var, value);
531 level = Z_DEFAULT_COMPRESSION;
532 else if (level < 0 || level > Z_BEST_COMPRESSION)
533 die("bad zlib compression level %d", level);
534 zlib_compression_level = level;
535 zlib_compression_seen = 1;
539 if (!strcmp(var, "core.compression")) {
540 int level = git_config_int(var, value);
542 level = Z_DEFAULT_COMPRESSION;
543 else if (level < 0 || level > Z_BEST_COMPRESSION)
544 die("bad zlib compression level %d", level);
545 core_compression_level = level;
546 core_compression_seen = 1;
547 if (!zlib_compression_seen)
548 zlib_compression_level = level;
552 if (!strcmp(var, "core.packedgitwindowsize")) {
553 int pgsz_x2 = getpagesize() * 2;
554 packed_git_window_size = git_config_int(var, value);
556 /* This value must be multiple of (pagesize * 2) */
557 packed_git_window_size /= pgsz_x2;
558 if (packed_git_window_size < 1)
559 packed_git_window_size = 1;
560 packed_git_window_size *= pgsz_x2;
564 if (!strcmp(var, "core.bigfilethreshold")) {
565 long n = git_config_int(var, value);
566 big_file_threshold = 0 < n ? n : 0;
570 if (!strcmp(var, "core.packedgitlimit")) {
571 packed_git_limit = git_config_int(var, value);
575 if (!strcmp(var, "core.deltabasecachelimit")) {
576 delta_base_cache_limit = git_config_int(var, value);
580 if (!strcmp(var, "core.autocrlf")) {
581 if (value && !strcasecmp(value, "input")) {
582 if (core_eol == EOL_CRLF)
583 return error("core.autocrlf=input conflicts with core.eol=crlf");
584 auto_crlf = AUTO_CRLF_INPUT;
587 auto_crlf = git_config_bool(var, value);
591 if (!strcmp(var, "core.safecrlf")) {
592 if (value && !strcasecmp(value, "warn")) {
593 safe_crlf = SAFE_CRLF_WARN;
596 safe_crlf = git_config_bool(var, value);
600 if (!strcmp(var, "core.eol")) {
601 if (value && !strcasecmp(value, "lf"))
603 else if (value && !strcasecmp(value, "crlf"))
605 else if (value && !strcasecmp(value, "native"))
606 core_eol = EOL_NATIVE;
608 core_eol = EOL_UNSET;
609 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
610 return error("core.autocrlf=input conflicts with core.eol=crlf");
614 if (!strcmp(var, "core.notesref")) {
615 notes_ref_name = xstrdup(value);
619 if (!strcmp(var, "core.pager"))
620 return git_config_string(&pager_program, var, value);
622 if (!strcmp(var, "core.editor"))
623 return git_config_string(&editor_program, var, value);
625 if (!strcmp(var, "core.askpass"))
626 return git_config_string(&askpass_program, var, value);
628 if (!strcmp(var, "core.excludesfile"))
629 return git_config_pathname(&excludes_file, var, value);
631 if (!strcmp(var, "core.whitespace")) {
633 return config_error_nonbool(var);
634 whitespace_rule_cfg = parse_whitespace_rule(value);
638 if (!strcmp(var, "core.fsyncobjectfiles")) {
639 fsync_object_files = git_config_bool(var, value);
643 if (!strcmp(var, "core.preloadindex")) {
644 core_preload_index = git_config_bool(var, value);
648 if (!strcmp(var, "core.createobject")) {
649 if (!strcmp(value, "rename"))
650 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
651 else if (!strcmp(value, "link"))
652 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
654 die("Invalid mode for object creation: %s", value);
658 if (!strcmp(var, "core.sparsecheckout")) {
659 core_apply_sparse_checkout = git_config_bool(var, value);
663 /* Add other config variables here and to Documentation/config.txt. */
667 static int git_default_user_config(const char *var, const char *value)
669 if (!strcmp(var, "user.name")) {
671 return config_error_nonbool(var);
672 strlcpy(git_default_name, value, sizeof(git_default_name));
673 user_ident_explicitly_given |= IDENT_NAME_GIVEN;
677 if (!strcmp(var, "user.email")) {
679 return config_error_nonbool(var);
680 strlcpy(git_default_email, value, sizeof(git_default_email));
681 user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
685 /* Add other config variables here and to Documentation/config.txt. */
689 static int git_default_i18n_config(const char *var, const char *value)
691 if (!strcmp(var, "i18n.commitencoding"))
692 return git_config_string(&git_commit_encoding, var, value);
694 if (!strcmp(var, "i18n.logoutputencoding"))
695 return git_config_string(&git_log_output_encoding, var, value);
697 /* Add other config variables here and to Documentation/config.txt. */
701 static int git_default_branch_config(const char *var, const char *value)
703 if (!strcmp(var, "branch.autosetupmerge")) {
704 if (value && !strcasecmp(value, "always")) {
705 git_branch_track = BRANCH_TRACK_ALWAYS;
708 git_branch_track = git_config_bool(var, value);
711 if (!strcmp(var, "branch.autosetuprebase")) {
713 return config_error_nonbool(var);
714 else if (!strcmp(value, "never"))
715 autorebase = AUTOREBASE_NEVER;
716 else if (!strcmp(value, "local"))
717 autorebase = AUTOREBASE_LOCAL;
718 else if (!strcmp(value, "remote"))
719 autorebase = AUTOREBASE_REMOTE;
720 else if (!strcmp(value, "always"))
721 autorebase = AUTOREBASE_ALWAYS;
723 return error("Malformed value for %s", var);
727 /* Add other config variables here and to Documentation/config.txt. */
731 static int git_default_push_config(const char *var, const char *value)
733 if (!strcmp(var, "push.default")) {
735 return config_error_nonbool(var);
736 else if (!strcmp(value, "nothing"))
737 push_default = PUSH_DEFAULT_NOTHING;
738 else if (!strcmp(value, "matching"))
739 push_default = PUSH_DEFAULT_MATCHING;
740 else if (!strcmp(value, "upstream"))
741 push_default = PUSH_DEFAULT_UPSTREAM;
742 else if (!strcmp(value, "tracking")) /* deprecated */
743 push_default = PUSH_DEFAULT_UPSTREAM;
744 else if (!strcmp(value, "current"))
745 push_default = PUSH_DEFAULT_CURRENT;
747 error("Malformed value for %s: %s", var, value);
748 return error("Must be one of nothing, matching, "
749 "tracking or current.");
754 /* Add other config variables here and to Documentation/config.txt. */
758 static int git_default_mailmap_config(const char *var, const char *value)
760 if (!strcmp(var, "mailmap.file"))
761 return git_config_string(&git_mailmap_file, var, value);
763 /* Add other config variables here and to Documentation/config.txt. */
767 int git_default_config(const char *var, const char *value, void *dummy)
769 if (!prefixcmp(var, "core."))
770 return git_default_core_config(var, value);
772 if (!prefixcmp(var, "user."))
773 return git_default_user_config(var, value);
775 if (!prefixcmp(var, "i18n."))
776 return git_default_i18n_config(var, value);
778 if (!prefixcmp(var, "branch."))
779 return git_default_branch_config(var, value);
781 if (!prefixcmp(var, "push."))
782 return git_default_push_config(var, value);
784 if (!prefixcmp(var, "mailmap."))
785 return git_default_mailmap_config(var, value);
787 if (!prefixcmp(var, "advice."))
788 return git_default_advice_config(var, value);
790 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
791 pager_use_color = git_config_bool(var,value);
795 if (!prefixcmp(var, "credential."))
796 return git_default_credential_config(var, value);
798 /* Add other config variables here and to Documentation/config.txt. */
802 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
805 FILE *f = fopen(filename, "r");
811 /* push config-file parsing state stack */
817 strbuf_init(&top.value, 1024);
820 ret = git_parse_file(fn, data);
822 /* pop config-file parsing state stack */
823 strbuf_release(&top.value);
831 const char *git_etc_gitconfig(void)
833 static const char *system_wide;
835 system_wide = system_path(ETC_GITCONFIG);
839 int git_env_bool(const char *k, int def)
841 const char *v = getenv(k);
842 return v ? git_config_bool(k, v) : def;
845 int git_config_system(void)
847 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
850 int git_config_early(config_fn_t fn, void *data, const char *repo_config)
852 int ret = 0, found = 0;
853 const char *home = NULL;
855 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
856 if (config_exclusive_filename)
857 return git_config_from_file(fn, config_exclusive_filename, data);
858 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
859 ret += git_config_from_file(fn, git_etc_gitconfig(),
864 home = getenv("HOME");
866 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
867 if (!access(user_config, R_OK)) {
868 ret += git_config_from_file(fn, user_config, data);
874 if (repo_config && !access(repo_config, R_OK)) {
875 ret += git_config_from_file(fn, repo_config, data);
879 switch (git_config_from_parameters(fn, data)) {
881 die("unable to parse command-line config");
883 case 0: /* found nothing */
885 default: /* found at least one item */
890 return ret == 0 ? found : ret;
893 int git_config(config_fn_t fn, void *data)
895 char *repo_config = NULL;
898 repo_config = git_pathdup("config");
899 ret = git_config_early(fn, data, repo_config);
906 * Find all the stuff for git_config_set() below.
909 #define MAX_MATCHES 512
915 regex_t *value_regex;
917 size_t offset[MAX_MATCHES];
918 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
922 static int matches(const char *key, const char *value)
924 return !strcmp(key, store.key) &&
925 (store.value_regex == NULL ||
926 (store.do_not_match ^
927 !regexec(store.value_regex, value, 0, NULL, 0)));
930 static int store_aux(const char *key, const char *value, void *cb)
936 switch (store.state) {
938 if (matches(key, value)) {
939 if (store.seen == 1 && store.multi_replace == 0) {
940 warning("%s has multiple values", key);
941 } else if (store.seen >= MAX_MATCHES) {
942 error("too many matches for %s", key);
946 store.offset[store.seen] = ftell(f);
952 * What we are looking for is in store.key (both
953 * section and var), and its section part is baselen
954 * long. We found key (again, both section and var).
955 * We would want to know if this key is in the same
956 * section as what we are looking for. We already
957 * know we are in the same section as what should
960 ep = strrchr(key, '.');
961 section_len = ep - key;
963 if ((section_len != store.baselen) ||
964 memcmp(key, store.key, section_len+1)) {
965 store.state = SECTION_END_SEEN;
970 * Do not increment matches: this is no match, but we
971 * just made sure we are in the desired section.
973 store.offset[store.seen] = ftell(f);
975 case SECTION_END_SEEN:
977 if (matches(key, value)) {
978 store.offset[store.seen] = ftell(f);
979 store.state = KEY_SEEN;
982 if (strrchr(key, '.') - key == store.baselen &&
983 !strncmp(key, store.key, store.baselen)) {
984 store.state = SECTION_SEEN;
985 store.offset[store.seen] = ftell(f);
992 static int write_error(const char *filename)
994 error("failed to write new configuration file %s", filename);
996 /* Same error code as "failed to rename". */
1000 static int store_write_section(int fd, const char *key)
1004 struct strbuf sb = STRBUF_INIT;
1006 dot = memchr(key, '.', store.baselen);
1008 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1009 for (i = dot - key + 1; i < store.baselen; i++) {
1010 if (key[i] == '"' || key[i] == '\\')
1011 strbuf_addch(&sb, '\\');
1012 strbuf_addch(&sb, key[i]);
1014 strbuf_addstr(&sb, "\"]\n");
1016 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1019 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1020 strbuf_release(&sb);
1025 static int store_write_pair(int fd, const char *key, const char *value)
1028 int length = strlen(key + store.baselen + 1);
1029 const char *quote = "";
1030 struct strbuf sb = STRBUF_INIT;
1033 * Check to see if the value needs to be surrounded with a dq pair.
1034 * Note that problematic characters are always backslash-quoted; this
1035 * check is about not losing leading or trailing SP and strings that
1036 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1037 * configuration parser.
1039 if (value[0] == ' ')
1041 for (i = 0; value[i]; i++)
1042 if (value[i] == ';' || value[i] == '#')
1044 if (i && value[i - 1] == ' ')
1047 strbuf_addf(&sb, "\t%.*s = %s",
1048 length, key + store.baselen + 1, quote);
1050 for (i = 0; value[i]; i++)
1053 strbuf_addstr(&sb, "\\n");
1056 strbuf_addstr(&sb, "\\t");
1060 strbuf_addch(&sb, '\\');
1062 strbuf_addch(&sb, value[i]);
1065 strbuf_addf(&sb, "%s\n", quote);
1067 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1068 strbuf_release(&sb);
1073 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1074 size_t offset_, int *found_bracket)
1076 size_t equal_offset = size, bracket_offset = size;
1080 for (offset = offset_-2; offset > 0
1081 && contents[offset] != '\n'; offset--)
1082 switch (contents[offset]) {
1083 case '=': equal_offset = offset; break;
1084 case ']': bracket_offset = offset; break;
1086 if (offset > 0 && contents[offset-1] == '\\') {
1090 if (bracket_offset < equal_offset) {
1092 offset = bracket_offset+1;
1099 int git_config_set(const char *key, const char *value)
1101 return git_config_set_multivar(key, value, NULL, 0);
1105 * Auxiliary function to sanity-check and split the key into the section
1106 * identifier and variable name.
1108 * Returns 0 on success, -1 when there is an invalid character in the key and
1109 * -2 if there is no section name in the key.
1111 * store_key - pointer to char* which will hold a copy of the key with
1112 * lowercase section and variable name
1113 * baselen - pointer to int which will hold the length of the
1114 * section + subsection part, can be NULL
1116 int git_config_parse_key(const char *key, char **store_key, int *baselen_)
1118 int i, dot, baselen;
1119 const char *last_dot = strrchr(key, '.');
1122 * Since "key" actually contains the section name and the real
1123 * key name separated by a dot, we have to know where the dot is.
1126 if (last_dot == NULL || last_dot == key) {
1127 error("key does not contain a section: %s", key);
1128 return -CONFIG_NO_SECTION_OR_NAME;
1132 error("key does not contain variable name: %s", key);
1133 return -CONFIG_NO_SECTION_OR_NAME;
1136 baselen = last_dot - key;
1138 *baselen_ = baselen;
1141 * Validate the key and while at it, lower case it for matching.
1143 *store_key = xmalloc(strlen(key) + 1);
1146 for (i = 0; key[i]; i++) {
1147 unsigned char c = key[i];
1150 /* Leave the extended basename untouched.. */
1151 if (!dot || i > baselen) {
1152 if (!iskeychar(c) ||
1153 (i == baselen + 1 && !isalpha(c))) {
1154 error("invalid key: %s", key);
1155 goto out_free_ret_1;
1158 } else if (c == '\n') {
1159 error("invalid key (newline): %s", key);
1160 goto out_free_ret_1;
1162 (*store_key)[i] = c;
1164 (*store_key)[i] = 0;
1170 return -CONFIG_INVALID_KEY;
1174 * If value==NULL, unset in (remove from) config,
1175 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1176 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1177 * else all matching key/values (regardless how many) are removed,
1178 * before the new pair is written.
1180 * Returns 0 on success.
1182 * This function does this:
1184 * - it locks the config file by creating ".git/config.lock"
1186 * - it then parses the config using store_aux() as validator to find
1187 * the position on the key/value pair to replace. If it is to be unset,
1188 * it must be found exactly once.
1190 * - the config file is mmap()ed and the part before the match (if any) is
1191 * written to the lock file, then the changed part and the rest.
1193 * - the config file is removed and the lock file rename()d to it.
1196 int git_config_set_multivar(const char *key, const char *value,
1197 const char *value_regex, int multi_replace)
1201 char *config_filename;
1202 struct lock_file *lock = NULL;
1204 if (config_exclusive_filename)
1205 config_filename = xstrdup(config_exclusive_filename);
1207 config_filename = git_pathdup("config");
1209 /* parse-key returns negative; flip the sign to feed exit(3) */
1210 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
1214 store.multi_replace = multi_replace;
1218 * The lock serves a purpose in addition to locking: the new
1219 * contents of .git/config will be written into it.
1221 lock = xcalloc(sizeof(struct lock_file), 1);
1222 fd = hold_lock_file_for_update(lock, config_filename, 0);
1224 error("could not lock config file %s: %s", config_filename, strerror(errno));
1226 ret = CONFIG_NO_LOCK;
1231 * If .git/config does not exist yet, write a minimal version.
1233 in_fd = open(config_filename, O_RDONLY);
1237 if ( ENOENT != errno ) {
1238 error("opening %s: %s", config_filename,
1240 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
1243 /* if nothing to unset, error out */
1244 if (value == NULL) {
1245 ret = CONFIG_NOTHING_SET;
1249 store.key = (char *)key;
1250 if (!store_write_section(fd, key) ||
1251 !store_write_pair(fd, key, value))
1256 size_t contents_sz, copy_begin, copy_end;
1257 int i, new_line = 0;
1259 if (value_regex == NULL)
1260 store.value_regex = NULL;
1262 if (value_regex[0] == '!') {
1263 store.do_not_match = 1;
1266 store.do_not_match = 0;
1268 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1269 if (regcomp(store.value_regex, value_regex,
1271 error("invalid pattern: %s", value_regex);
1272 free(store.value_regex);
1273 ret = CONFIG_INVALID_PATTERN;
1278 store.offset[0] = 0;
1279 store.state = START;
1283 * After this, store.offset will contain the *end* offset
1284 * of the last match, or remain at 0 if no match was found.
1285 * As a side effect, we make sure to transform only a valid
1286 * existing config file.
1288 if (git_config_from_file(store_aux, config_filename, NULL)) {
1289 error("invalid config file %s", config_filename);
1291 if (store.value_regex != NULL) {
1292 regfree(store.value_regex);
1293 free(store.value_regex);
1295 ret = CONFIG_INVALID_FILE;
1300 if (store.value_regex != NULL) {
1301 regfree(store.value_regex);
1302 free(store.value_regex);
1305 /* if nothing to unset, or too many matches, error out */
1306 if ((store.seen == 0 && value == NULL) ||
1307 (store.seen > 1 && multi_replace == 0)) {
1308 ret = CONFIG_NOTHING_SET;
1313 contents_sz = xsize_t(st.st_size);
1314 contents = xmmap(NULL, contents_sz, PROT_READ,
1315 MAP_PRIVATE, in_fd, 0);
1318 if (store.seen == 0)
1321 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1322 if (store.offset[i] == 0) {
1323 store.offset[i] = copy_end = contents_sz;
1324 } else if (store.state != KEY_SEEN) {
1325 copy_end = store.offset[i];
1327 copy_end = find_beginning_of_line(
1328 contents, contents_sz,
1329 store.offset[i]-2, &new_line);
1331 if (copy_end > 0 && contents[copy_end-1] != '\n')
1334 /* write the first part of the config */
1335 if (copy_end > copy_begin) {
1336 if (write_in_full(fd, contents + copy_begin,
1337 copy_end - copy_begin) <
1338 copy_end - copy_begin)
1341 write_str_in_full(fd, "\n") != 1)
1344 copy_begin = store.offset[i];
1347 /* write the pair (value == NULL means unset) */
1348 if (value != NULL) {
1349 if (store.state == START) {
1350 if (!store_write_section(fd, key))
1353 if (!store_write_pair(fd, key, value))
1357 /* write the rest of the config */
1358 if (copy_begin < contents_sz)
1359 if (write_in_full(fd, contents + copy_begin,
1360 contents_sz - copy_begin) <
1361 contents_sz - copy_begin)
1364 munmap(contents, contents_sz);
1367 if (commit_lock_file(lock) < 0) {
1368 error("could not commit config file %s", config_filename);
1369 ret = CONFIG_NO_WRITE;
1374 * lock is committed, so don't try to roll it back below.
1375 * NOTE: Since lockfile.c keeps a linked list of all created
1376 * lock_file structures, it isn't safe to free(lock). It's
1377 * better to just leave it hanging around.
1384 rollback_lock_file(lock);
1385 free(config_filename);
1389 ret = write_error(lock->filename);
1394 static int section_name_match (const char *buf, const char *name)
1396 int i = 0, j = 0, dot = 0;
1399 for (i = 1; buf[i] && buf[i] != ']'; i++) {
1400 if (!dot && isspace(buf[i])) {
1402 if (name[j++] != '.')
1404 for (i++; isspace(buf[i]); i++)
1410 if (buf[i] == '\\' && dot)
1412 else if (buf[i] == '"' && dot) {
1413 for (i++; isspace(buf[i]); i++)
1417 if (buf[i] != name[j++])
1420 if (buf[i] == ']' && name[j] == 0) {
1422 * We match, now just find the right length offset by
1423 * gobbling up any whitespace after it, as well
1426 for (; buf[i] && isspace(buf[i]); i++)
1433 /* if new_name == NULL, the section is removed instead */
1434 int git_config_rename_section(const char *old_name, const char *new_name)
1436 int ret = 0, remove = 0;
1437 char *config_filename;
1438 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1443 if (config_exclusive_filename)
1444 config_filename = xstrdup(config_exclusive_filename);
1446 config_filename = git_pathdup("config");
1447 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1449 ret = error("could not lock config file %s", config_filename);
1453 if (!(config_file = fopen(config_filename, "rb"))) {
1454 /* no config file means nothing to rename, no error */
1455 goto unlock_and_out;
1458 while (fgets(buf, sizeof(buf), config_file)) {
1462 for (i = 0; buf[i] && isspace(buf[i]); i++)
1464 if (buf[i] == '[') {
1465 /* it's a section */
1466 int offset = section_name_match(&buf[i], old_name);
1469 if (new_name == NULL) {
1473 store.baselen = strlen(new_name);
1474 if (!store_write_section(out_fd, new_name)) {
1475 ret = write_error(lock->filename);
1479 * We wrote out the new section, with
1480 * a newline, now skip the old
1483 output += offset + i;
1484 if (strlen(output) > 0) {
1486 * More content means there's
1487 * a declaration to put on the
1488 * next line; indent with a
1499 length = strlen(output);
1500 if (write_in_full(out_fd, output, length) != length) {
1501 ret = write_error(lock->filename);
1505 fclose(config_file);
1507 if (commit_lock_file(lock) < 0)
1508 ret = error("could not commit config file %s", config_filename);
1510 free(config_filename);
1515 * Call this to report error for your variable that should not
1516 * get a boolean value (i.e. "[my] var" means "true").
1518 int config_error_nonbool(const char *var)
1520 return error("Missing value for '%s'", var);