2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
14 static FILE *config_file;
15 static const char *config_file_name;
16 static int config_linenr;
17 static int config_file_eof;
18 static int zlib_compression_seen;
20 const char *config_exclusive_filename = NULL;
24 struct config_item *next;
28 static struct config_item *config_parameters;
29 static struct config_item **config_parameters_tail = &config_parameters;
31 static void lowercase(char *p)
37 int git_config_parse_parameter(const char *text)
39 struct config_item *ct;
40 struct strbuf tmp = STRBUF_INIT;
42 strbuf_addstr(&tmp, text);
43 pair = strbuf_split(&tmp, '=');
44 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=')
45 strbuf_setlen(pair[0], pair[0]->len - 1);
48 strbuf_list_free(pair);
51 ct = xcalloc(1, sizeof(struct config_item));
52 ct->name = strbuf_detach(pair[0], NULL);
55 ct->value = strbuf_detach(pair[1], NULL);
57 strbuf_list_free(pair);
59 *config_parameters_tail = ct;
60 config_parameters_tail = &ct->next;
64 static int get_next_char(void)
70 if ((f = config_file) != NULL) {
73 /* DOS like systems */
90 static char *parse_value(void)
92 static char value[1024];
93 int quote = 0, comment = 0, len = 0, space = 0;
96 int c = get_next_char();
97 if (len >= sizeof(value) - 1)
107 if (isspace(c) && !quote) {
113 if (c == ';' || c == '#') {
118 for (; space; space--)
134 /* Some characters escape as themselves */
137 /* Reject unknown escape sequences */
152 static inline int iskeychar(int c)
154 return isalnum(c) || c == '-';
157 static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
162 /* Get the full name */
169 name[len++] = tolower(c);
174 while (c == ' ' || c == '\t')
181 value = parse_value();
185 return fn(name, value, data);
188 static int get_extended_base_var(char *name, int baselen, int c)
194 } while (isspace(c));
196 /* We require the format to be '[base "extension"]' */
199 name[baselen++] = '.';
202 int c = get_next_char();
213 if (baselen > MAXNAME / 2)
218 if (get_next_char() != ']')
223 static int get_base_var(char *name)
228 int c = get_next_char();
234 return get_extended_base_var(name, baselen, c);
235 if (!iskeychar(c) && c != '.')
237 if (baselen > MAXNAME / 2)
239 name[baselen++] = tolower(c);
243 static int git_parse_file(config_fn_t fn, void *data)
247 static char var[MAXNAME];
249 /* U+FEFF Byte Order Mark in UTF8 */
250 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
251 const unsigned char *bomptr = utf8_bom;
254 int c = get_next_char();
255 if (bomptr && *bomptr) {
256 /* We are at the file beginning; skip UTF8-encoded BOM
257 * if present. Sane editors won't put this in on their
258 * own, but e.g. Windows Notepad will do it happily. */
259 if ((unsigned char) c == *bomptr) {
263 /* Do not tolerate partial BOM. */
264 if (bomptr != utf8_bom)
266 /* No BOM at file beginning. Cool. */
276 if (comment || isspace(c))
278 if (c == '#' || c == ';') {
283 baselen = get_base_var(var);
286 var[baselen++] = '.';
292 var[baselen] = tolower(c);
293 if (get_value(fn, data, var, baselen+1) < 0)
296 die("bad config file line %d in %s", config_linenr, config_file_name);
299 static int parse_unit_factor(const char *end, unsigned long *val)
303 else if (!strcasecmp(end, "k")) {
307 else if (!strcasecmp(end, "m")) {
311 else if (!strcasecmp(end, "g")) {
312 *val *= 1024 * 1024 * 1024;
318 static int git_parse_long(const char *value, long *ret)
320 if (value && *value) {
322 long val = strtol(value, &end, 0);
323 unsigned long factor = 1;
324 if (!parse_unit_factor(end, &factor))
332 int git_parse_ulong(const char *value, unsigned long *ret)
334 if (value && *value) {
336 unsigned long val = strtoul(value, &end, 0);
337 if (!parse_unit_factor(end, &val))
345 static void die_bad_config(const char *name)
347 if (config_file_name)
348 die("bad config value for '%s' in %s", name, config_file_name);
349 die("bad config value for '%s'", name);
352 int git_config_int(const char *name, const char *value)
355 if (!git_parse_long(value, &ret))
356 die_bad_config(name);
360 unsigned long git_config_ulong(const char *name, const char *value)
363 if (!git_parse_ulong(value, &ret))
364 die_bad_config(name);
368 int git_config_maybe_bool(const char *name, const char *value)
374 if (!strcasecmp(value, "true")
375 || !strcasecmp(value, "yes")
376 || !strcasecmp(value, "on"))
378 if (!strcasecmp(value, "false")
379 || !strcasecmp(value, "no")
380 || !strcasecmp(value, "off"))
385 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
387 int v = git_config_maybe_bool(name, value);
393 return git_config_int(name, value);
396 int git_config_bool(const char *name, const char *value)
399 return !!git_config_bool_or_int(name, value, &discard);
402 int git_config_string(const char **dest, const char *var, const char *value)
405 return config_error_nonbool(var);
406 *dest = xstrdup(value);
410 int git_config_pathname(const char **dest, const char *var, const char *value)
413 return config_error_nonbool(var);
414 *dest = expand_user_path(value);
416 die("Failed to expand user dir in: '%s'", value);
420 static int git_default_core_config(const char *var, const char *value)
422 /* This needs a better name */
423 if (!strcmp(var, "core.filemode")) {
424 trust_executable_bit = git_config_bool(var, value);
427 if (!strcmp(var, "core.trustctime")) {
428 trust_ctime = git_config_bool(var, value);
432 if (!strcmp(var, "core.quotepath")) {
433 quote_path_fully = git_config_bool(var, value);
437 if (!strcmp(var, "core.symlinks")) {
438 has_symlinks = git_config_bool(var, value);
442 if (!strcmp(var, "core.ignorecase")) {
443 ignore_case = git_config_bool(var, value);
447 if (!strcmp(var, "core.bare")) {
448 is_bare_repository_cfg = git_config_bool(var, value);
452 if (!strcmp(var, "core.ignorestat")) {
453 assume_unchanged = git_config_bool(var, value);
457 if (!strcmp(var, "core.prefersymlinkrefs")) {
458 prefer_symlink_refs = git_config_bool(var, value);
462 if (!strcmp(var, "core.logallrefupdates")) {
463 log_all_ref_updates = git_config_bool(var, value);
467 if (!strcmp(var, "core.warnambiguousrefs")) {
468 warn_ambiguous_refs = git_config_bool(var, value);
472 if (!strcmp(var, "core.loosecompression")) {
473 int level = git_config_int(var, value);
475 level = Z_DEFAULT_COMPRESSION;
476 else if (level < 0 || level > Z_BEST_COMPRESSION)
477 die("bad zlib compression level %d", level);
478 zlib_compression_level = level;
479 zlib_compression_seen = 1;
483 if (!strcmp(var, "core.compression")) {
484 int level = git_config_int(var, value);
486 level = Z_DEFAULT_COMPRESSION;
487 else if (level < 0 || level > Z_BEST_COMPRESSION)
488 die("bad zlib compression level %d", level);
489 core_compression_level = level;
490 core_compression_seen = 1;
491 if (!zlib_compression_seen)
492 zlib_compression_level = level;
496 if (!strcmp(var, "core.packedgitwindowsize")) {
497 int pgsz_x2 = getpagesize() * 2;
498 packed_git_window_size = git_config_int(var, value);
500 /* This value must be multiple of (pagesize * 2) */
501 packed_git_window_size /= pgsz_x2;
502 if (packed_git_window_size < 1)
503 packed_git_window_size = 1;
504 packed_git_window_size *= pgsz_x2;
508 if (!strcmp(var, "core.packedgitlimit")) {
509 packed_git_limit = git_config_int(var, value);
513 if (!strcmp(var, "core.deltabasecachelimit")) {
514 delta_base_cache_limit = git_config_int(var, value);
518 if (!strcmp(var, "core.autocrlf")) {
519 if (value && !strcasecmp(value, "input")) {
521 return error("core.autocrlf=input conflicts with core.eol=crlf");
522 auto_crlf = AUTO_CRLF_INPUT;
525 auto_crlf = git_config_bool(var, value);
529 if (!strcmp(var, "core.safecrlf")) {
530 if (value && !strcasecmp(value, "warn")) {
531 safe_crlf = SAFE_CRLF_WARN;
534 safe_crlf = git_config_bool(var, value);
538 if (!strcmp(var, "core.eol")) {
539 if (value && !strcasecmp(value, "lf"))
541 else if (value && !strcasecmp(value, "crlf"))
543 else if (value && !strcasecmp(value, "native"))
547 if (eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
548 return error("core.autocrlf=input conflicts with core.eol=crlf");
552 if (!strcmp(var, "core.notesref")) {
553 notes_ref_name = xstrdup(value);
557 if (!strcmp(var, "core.pager"))
558 return git_config_string(&pager_program, var, value);
560 if (!strcmp(var, "core.editor"))
561 return git_config_string(&editor_program, var, value);
563 if (!strcmp(var, "core.askpass"))
564 return git_config_string(&askpass_program, var, value);
566 if (!strcmp(var, "core.excludesfile"))
567 return git_config_pathname(&excludes_file, var, value);
569 if (!strcmp(var, "core.whitespace")) {
571 return config_error_nonbool(var);
572 whitespace_rule_cfg = parse_whitespace_rule(value);
576 if (!strcmp(var, "core.fsyncobjectfiles")) {
577 fsync_object_files = git_config_bool(var, value);
581 if (!strcmp(var, "core.preloadindex")) {
582 core_preload_index = git_config_bool(var, value);
586 if (!strcmp(var, "core.createobject")) {
587 if (!strcmp(value, "rename"))
588 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
589 else if (!strcmp(value, "link"))
590 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
592 die("Invalid mode for object creation: %s", value);
596 if (!strcmp(var, "core.sparsecheckout")) {
597 core_apply_sparse_checkout = git_config_bool(var, value);
601 /* Add other config variables here and to Documentation/config.txt. */
605 static int git_default_user_config(const char *var, const char *value)
607 if (!strcmp(var, "user.name")) {
609 return config_error_nonbool(var);
610 strlcpy(git_default_name, value, sizeof(git_default_name));
611 user_ident_explicitly_given |= IDENT_NAME_GIVEN;
615 if (!strcmp(var, "user.email")) {
617 return config_error_nonbool(var);
618 strlcpy(git_default_email, value, sizeof(git_default_email));
619 user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
623 /* Add other config variables here and to Documentation/config.txt. */
627 static int git_default_i18n_config(const char *var, const char *value)
629 if (!strcmp(var, "i18n.commitencoding"))
630 return git_config_string(&git_commit_encoding, var, value);
632 if (!strcmp(var, "i18n.logoutputencoding"))
633 return git_config_string(&git_log_output_encoding, var, value);
635 /* Add other config variables here and to Documentation/config.txt. */
639 static int git_default_branch_config(const char *var, const char *value)
641 if (!strcmp(var, "branch.autosetupmerge")) {
642 if (value && !strcasecmp(value, "always")) {
643 git_branch_track = BRANCH_TRACK_ALWAYS;
646 git_branch_track = git_config_bool(var, value);
649 if (!strcmp(var, "branch.autosetuprebase")) {
651 return config_error_nonbool(var);
652 else if (!strcmp(value, "never"))
653 autorebase = AUTOREBASE_NEVER;
654 else if (!strcmp(value, "local"))
655 autorebase = AUTOREBASE_LOCAL;
656 else if (!strcmp(value, "remote"))
657 autorebase = AUTOREBASE_REMOTE;
658 else if (!strcmp(value, "always"))
659 autorebase = AUTOREBASE_ALWAYS;
661 return error("Malformed value for %s", var);
665 /* Add other config variables here and to Documentation/config.txt. */
669 static int git_default_push_config(const char *var, const char *value)
671 if (!strcmp(var, "push.default")) {
673 return config_error_nonbool(var);
674 else if (!strcmp(value, "nothing"))
675 push_default = PUSH_DEFAULT_NOTHING;
676 else if (!strcmp(value, "matching"))
677 push_default = PUSH_DEFAULT_MATCHING;
678 else if (!strcmp(value, "tracking"))
679 push_default = PUSH_DEFAULT_TRACKING;
680 else if (!strcmp(value, "current"))
681 push_default = PUSH_DEFAULT_CURRENT;
683 error("Malformed value for %s: %s", var, value);
684 return error("Must be one of nothing, matching, "
685 "tracking or current.");
690 /* Add other config variables here and to Documentation/config.txt. */
694 static int git_default_mailmap_config(const char *var, const char *value)
696 if (!strcmp(var, "mailmap.file"))
697 return git_config_string(&git_mailmap_file, var, value);
699 /* Add other config variables here and to Documentation/config.txt. */
703 int git_default_config(const char *var, const char *value, void *dummy)
705 if (!prefixcmp(var, "core."))
706 return git_default_core_config(var, value);
708 if (!prefixcmp(var, "user."))
709 return git_default_user_config(var, value);
711 if (!prefixcmp(var, "i18n."))
712 return git_default_i18n_config(var, value);
714 if (!prefixcmp(var, "branch."))
715 return git_default_branch_config(var, value);
717 if (!prefixcmp(var, "push."))
718 return git_default_push_config(var, value);
720 if (!prefixcmp(var, "mailmap."))
721 return git_default_mailmap_config(var, value);
723 if (!prefixcmp(var, "advice."))
724 return git_default_advice_config(var, value);
726 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
727 pager_use_color = git_config_bool(var,value);
731 /* Add other config variables here and to Documentation/config.txt. */
735 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
738 FILE *f = fopen(filename, "r");
743 config_file_name = filename;
746 ret = git_parse_file(fn, data);
748 config_file_name = NULL;
753 const char *git_etc_gitconfig(void)
755 static const char *system_wide;
757 system_wide = system_path(ETC_GITCONFIG);
761 int git_env_bool(const char *k, int def)
763 const char *v = getenv(k);
764 return v ? git_config_bool(k, v) : def;
767 int git_config_system(void)
769 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
772 int git_config_global(void)
774 return !git_env_bool("GIT_CONFIG_NOGLOBAL", 0);
777 int git_config_from_parameters(config_fn_t fn, void *data)
779 const struct config_item *ct;
780 for (ct = config_parameters; ct; ct = ct->next)
781 if (fn(ct->name, ct->value, data) < 0)
786 int git_config(config_fn_t fn, void *data)
788 int ret = 0, found = 0;
789 char *repo_config = NULL;
790 const char *home = NULL;
792 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
793 if (config_exclusive_filename)
794 return git_config_from_file(fn, config_exclusive_filename, data);
795 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
796 ret += git_config_from_file(fn, git_etc_gitconfig(),
801 home = getenv("HOME");
802 if (git_config_global() && home) {
803 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
804 if (!access(user_config, R_OK)) {
805 ret += git_config_from_file(fn, user_config, data);
811 repo_config = git_pathdup("config");
812 if (!access(repo_config, R_OK)) {
813 ret += git_config_from_file(fn, repo_config, data);
818 if (config_parameters) {
819 ret += git_config_from_parameters(fn, data);
829 * Find all the stuff for git_config_set() below.
832 #define MAX_MATCHES 512
838 regex_t *value_regex;
840 size_t offset[MAX_MATCHES];
841 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
845 static int matches(const char *key, const char *value)
847 return !strcmp(key, store.key) &&
848 (store.value_regex == NULL ||
849 (store.do_not_match ^
850 !regexec(store.value_regex, value, 0, NULL, 0)));
853 static int store_aux(const char *key, const char *value, void *cb)
858 switch (store.state) {
860 if (matches(key, value)) {
861 if (store.seen == 1 && store.multi_replace == 0) {
862 warning("%s has multiple values", key);
863 } else if (store.seen >= MAX_MATCHES) {
864 error("too many matches for %s", key);
868 store.offset[store.seen] = ftell(config_file);
874 * What we are looking for is in store.key (both
875 * section and var), and its section part is baselen
876 * long. We found key (again, both section and var).
877 * We would want to know if this key is in the same
878 * section as what we are looking for. We already
879 * know we are in the same section as what should
882 ep = strrchr(key, '.');
883 section_len = ep - key;
885 if ((section_len != store.baselen) ||
886 memcmp(key, store.key, section_len+1)) {
887 store.state = SECTION_END_SEEN;
892 * Do not increment matches: this is no match, but we
893 * just made sure we are in the desired section.
895 store.offset[store.seen] = ftell(config_file);
897 case SECTION_END_SEEN:
899 if (matches(key, value)) {
900 store.offset[store.seen] = ftell(config_file);
901 store.state = KEY_SEEN;
904 if (strrchr(key, '.') - key == store.baselen &&
905 !strncmp(key, store.key, store.baselen)) {
906 store.state = SECTION_SEEN;
907 store.offset[store.seen] = ftell(config_file);
914 static int write_error(const char *filename)
916 error("failed to write new configuration file %s", filename);
918 /* Same error code as "failed to rename". */
922 static int store_write_section(int fd, const char *key)
926 struct strbuf sb = STRBUF_INIT;
928 dot = memchr(key, '.', store.baselen);
930 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
931 for (i = dot - key + 1; i < store.baselen; i++) {
932 if (key[i] == '"' || key[i] == '\\')
933 strbuf_addch(&sb, '\\');
934 strbuf_addch(&sb, key[i]);
936 strbuf_addstr(&sb, "\"]\n");
938 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
941 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
947 static int store_write_pair(int fd, const char *key, const char *value)
950 int length = strlen(key + store.baselen + 1);
951 const char *quote = "";
952 struct strbuf sb = STRBUF_INIT;
955 * Check to see if the value needs to be surrounded with a dq pair.
956 * Note that problematic characters are always backslash-quoted; this
957 * check is about not losing leading or trailing SP and strings that
958 * follow beginning-of-comment characters (i.e. ';' and '#') by the
959 * configuration parser.
963 for (i = 0; value[i]; i++)
964 if (value[i] == ';' || value[i] == '#')
966 if (i && value[i - 1] == ' ')
969 strbuf_addf(&sb, "\t%.*s = %s",
970 length, key + store.baselen + 1, quote);
972 for (i = 0; value[i]; i++)
975 strbuf_addstr(&sb, "\\n");
978 strbuf_addstr(&sb, "\\t");
982 strbuf_addch(&sb, '\\');
984 strbuf_addch(&sb, value[i]);
987 strbuf_addf(&sb, "%s\n", quote);
989 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
995 static ssize_t find_beginning_of_line(const char *contents, size_t size,
996 size_t offset_, int *found_bracket)
998 size_t equal_offset = size, bracket_offset = size;
1002 for (offset = offset_-2; offset > 0
1003 && contents[offset] != '\n'; offset--)
1004 switch (contents[offset]) {
1005 case '=': equal_offset = offset; break;
1006 case ']': bracket_offset = offset; break;
1008 if (offset > 0 && contents[offset-1] == '\\') {
1012 if (bracket_offset < equal_offset) {
1014 offset = bracket_offset+1;
1021 int git_config_set(const char *key, const char *value)
1023 return git_config_set_multivar(key, value, NULL, 0);
1027 * If value==NULL, unset in (remove from) config,
1028 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1029 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1030 * else all matching key/values (regardless how many) are removed,
1031 * before the new pair is written.
1033 * Returns 0 on success.
1035 * This function does this:
1037 * - it locks the config file by creating ".git/config.lock"
1039 * - it then parses the config using store_aux() as validator to find
1040 * the position on the key/value pair to replace. If it is to be unset,
1041 * it must be found exactly once.
1043 * - the config file is mmap()ed and the part before the match (if any) is
1044 * written to the lock file, then the changed part and the rest.
1046 * - the config file is removed and the lock file rename()d to it.
1049 int git_config_set_multivar(const char *key, const char *value,
1050 const char *value_regex, int multi_replace)
1055 char *config_filename;
1056 struct lock_file *lock = NULL;
1057 const char *last_dot = strrchr(key, '.');
1059 if (config_exclusive_filename)
1060 config_filename = xstrdup(config_exclusive_filename);
1062 config_filename = git_pathdup("config");
1065 * Since "key" actually contains the section name and the real
1066 * key name separated by a dot, we have to know where the dot is.
1069 if (last_dot == NULL) {
1070 error("key does not contain a section: %s", key);
1074 store.baselen = last_dot - key;
1076 store.multi_replace = multi_replace;
1079 * Validate the key and while at it, lower case it for matching.
1081 store.key = xmalloc(strlen(key) + 1);
1083 for (i = 0; key[i]; i++) {
1084 unsigned char c = key[i];
1087 /* Leave the extended basename untouched.. */
1088 if (!dot || i > store.baselen) {
1089 if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) {
1090 error("invalid key: %s", key);
1096 } else if (c == '\n') {
1097 error("invalid key (newline): %s", key);
1107 * The lock serves a purpose in addition to locking: the new
1108 * contents of .git/config will be written into it.
1110 lock = xcalloc(sizeof(struct lock_file), 1);
1111 fd = hold_lock_file_for_update(lock, config_filename, 0);
1113 error("could not lock config file %s: %s", config_filename, strerror(errno));
1120 * If .git/config does not exist yet, write a minimal version.
1122 in_fd = open(config_filename, O_RDONLY);
1126 if ( ENOENT != errno ) {
1127 error("opening %s: %s", config_filename,
1129 ret = 3; /* same as "invalid config file" */
1132 /* if nothing to unset, error out */
1133 if (value == NULL) {
1138 store.key = (char *)key;
1139 if (!store_write_section(fd, key) ||
1140 !store_write_pair(fd, key, value))
1145 size_t contents_sz, copy_begin, copy_end;
1146 int i, new_line = 0;
1148 if (value_regex == NULL)
1149 store.value_regex = NULL;
1151 if (value_regex[0] == '!') {
1152 store.do_not_match = 1;
1155 store.do_not_match = 0;
1157 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1158 if (regcomp(store.value_regex, value_regex,
1160 error("invalid pattern: %s", value_regex);
1161 free(store.value_regex);
1167 store.offset[0] = 0;
1168 store.state = START;
1172 * After this, store.offset will contain the *end* offset
1173 * of the last match, or remain at 0 if no match was found.
1174 * As a side effect, we make sure to transform only a valid
1175 * existing config file.
1177 if (git_config_from_file(store_aux, config_filename, NULL)) {
1178 error("invalid config file %s", config_filename);
1180 if (store.value_regex != NULL) {
1181 regfree(store.value_regex);
1182 free(store.value_regex);
1189 if (store.value_regex != NULL) {
1190 regfree(store.value_regex);
1191 free(store.value_regex);
1194 /* if nothing to unset, or too many matches, error out */
1195 if ((store.seen == 0 && value == NULL) ||
1196 (store.seen > 1 && multi_replace == 0)) {
1202 contents_sz = xsize_t(st.st_size);
1203 contents = xmmap(NULL, contents_sz, PROT_READ,
1204 MAP_PRIVATE, in_fd, 0);
1207 if (store.seen == 0)
1210 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1211 if (store.offset[i] == 0) {
1212 store.offset[i] = copy_end = contents_sz;
1213 } else if (store.state != KEY_SEEN) {
1214 copy_end = store.offset[i];
1216 copy_end = find_beginning_of_line(
1217 contents, contents_sz,
1218 store.offset[i]-2, &new_line);
1220 if (copy_end > 0 && contents[copy_end-1] != '\n')
1223 /* write the first part of the config */
1224 if (copy_end > copy_begin) {
1225 if (write_in_full(fd, contents + copy_begin,
1226 copy_end - copy_begin) <
1227 copy_end - copy_begin)
1230 write_str_in_full(fd, "\n") != 1)
1233 copy_begin = store.offset[i];
1236 /* write the pair (value == NULL means unset) */
1237 if (value != NULL) {
1238 if (store.state == START) {
1239 if (!store_write_section(fd, key))
1242 if (!store_write_pair(fd, key, value))
1246 /* write the rest of the config */
1247 if (copy_begin < contents_sz)
1248 if (write_in_full(fd, contents + copy_begin,
1249 contents_sz - copy_begin) <
1250 contents_sz - copy_begin)
1253 munmap(contents, contents_sz);
1256 if (commit_lock_file(lock) < 0) {
1257 error("could not commit config file %s", config_filename);
1263 * lock is committed, so don't try to roll it back below.
1264 * NOTE: Since lockfile.c keeps a linked list of all created
1265 * lock_file structures, it isn't safe to free(lock). It's
1266 * better to just leave it hanging around.
1273 rollback_lock_file(lock);
1274 free(config_filename);
1278 ret = write_error(lock->filename);
1283 static int section_name_match (const char *buf, const char *name)
1285 int i = 0, j = 0, dot = 0;
1288 for (i = 1; buf[i] && buf[i] != ']'; i++) {
1289 if (!dot && isspace(buf[i])) {
1291 if (name[j++] != '.')
1293 for (i++; isspace(buf[i]); i++)
1299 if (buf[i] == '\\' && dot)
1301 else if (buf[i] == '"' && dot) {
1302 for (i++; isspace(buf[i]); i++)
1306 if (buf[i] != name[j++])
1309 if (buf[i] == ']' && name[j] == 0) {
1311 * We match, now just find the right length offset by
1312 * gobbling up any whitespace after it, as well
1315 for (; buf[i] && isspace(buf[i]); i++)
1322 /* if new_name == NULL, the section is removed instead */
1323 int git_config_rename_section(const char *old_name, const char *new_name)
1325 int ret = 0, remove = 0;
1326 char *config_filename;
1327 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1331 if (config_exclusive_filename)
1332 config_filename = xstrdup(config_exclusive_filename);
1334 config_filename = git_pathdup("config");
1335 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1337 ret = error("could not lock config file %s", config_filename);
1341 if (!(config_file = fopen(config_filename, "rb"))) {
1342 /* no config file means nothing to rename, no error */
1343 goto unlock_and_out;
1346 while (fgets(buf, sizeof(buf), config_file)) {
1350 for (i = 0; buf[i] && isspace(buf[i]); i++)
1352 if (buf[i] == '[') {
1353 /* it's a section */
1354 int offset = section_name_match(&buf[i], old_name);
1357 if (new_name == NULL) {
1361 store.baselen = strlen(new_name);
1362 if (!store_write_section(out_fd, new_name)) {
1363 ret = write_error(lock->filename);
1367 * We wrote out the new section, with
1368 * a newline, now skip the old
1371 output += offset + i;
1372 if (strlen(output) > 0) {
1374 * More content means there's
1375 * a declaration to put on the
1376 * next line; indent with a
1387 length = strlen(output);
1388 if (write_in_full(out_fd, output, length) != length) {
1389 ret = write_error(lock->filename);
1393 fclose(config_file);
1395 if (commit_lock_file(lock) < 0)
1396 ret = error("could not commit config file %s", config_filename);
1398 free(config_filename);
1403 * Call this to report error for your variable that should not
1404 * get a boolean value (i.e. "[my] var" means "true").
1406 int config_error_nonbool(const char *var)
1408 return error("Missing value for '%s'", var);