2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
13 static FILE *config_file;
14 static const char *config_file_name;
15 static int config_linenr;
16 static int config_file_eof;
17 static int zlib_compression_seen;
19 const char *config_exclusive_filename = NULL;
21 static int get_next_char(void)
27 if ((f = config_file) != NULL) {
30 /* DOS like systems */
47 static char *parse_value(void)
49 static char value[1024];
50 int quote = 0, comment = 0, len = 0, space = 0;
53 int c = get_next_char();
54 if (len >= sizeof(value) - 1)
64 if (isspace(c) && !quote) {
70 if (c == ';' || c == '#') {
75 for (; space; space--)
91 /* Some characters escape as themselves */
94 /* Reject unknown escape sequences */
109 static inline int iskeychar(int c)
111 return isalnum(c) || c == '-';
114 static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
119 /* Get the full name */
126 name[len++] = tolower(c);
131 while (c == ' ' || c == '\t')
138 value = parse_value();
142 return fn(name, value, data);
145 static int get_extended_base_var(char *name, int baselen, int c)
151 } while (isspace(c));
153 /* We require the format to be '[base "extension"]' */
156 name[baselen++] = '.';
159 int c = get_next_char();
170 if (baselen > MAXNAME / 2)
175 if (get_next_char() != ']')
180 static int get_base_var(char *name)
185 int c = get_next_char();
191 return get_extended_base_var(name, baselen, c);
192 if (!iskeychar(c) && c != '.')
194 if (baselen > MAXNAME / 2)
196 name[baselen++] = tolower(c);
200 static int git_parse_file(config_fn_t fn, void *data)
204 static char var[MAXNAME];
206 /* U+FEFF Byte Order Mark in UTF8 */
207 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
208 const unsigned char *bomptr = utf8_bom;
211 int c = get_next_char();
212 if (bomptr && *bomptr) {
213 /* We are at the file beginning; skip UTF8-encoded BOM
214 * if present. Sane editors won't put this in on their
215 * own, but e.g. Windows Notepad will do it happily. */
216 if ((unsigned char) c == *bomptr) {
220 /* Do not tolerate partial BOM. */
221 if (bomptr != utf8_bom)
223 /* No BOM at file beginning. Cool. */
233 if (comment || isspace(c))
235 if (c == '#' || c == ';') {
240 baselen = get_base_var(var);
243 var[baselen++] = '.';
249 var[baselen] = tolower(c);
250 if (get_value(fn, data, var, baselen+1) < 0)
253 die("bad config file line %d in %s", config_linenr, config_file_name);
256 static int parse_unit_factor(const char *end, unsigned long *val)
260 else if (!strcasecmp(end, "k")) {
264 else if (!strcasecmp(end, "m")) {
268 else if (!strcasecmp(end, "g")) {
269 *val *= 1024 * 1024 * 1024;
275 static int git_parse_long(const char *value, long *ret)
277 if (value && *value) {
279 long val = strtol(value, &end, 0);
280 unsigned long factor = 1;
281 if (!parse_unit_factor(end, &factor))
289 int git_parse_ulong(const char *value, unsigned long *ret)
291 if (value && *value) {
293 unsigned long val = strtoul(value, &end, 0);
294 if (!parse_unit_factor(end, &val))
302 static void die_bad_config(const char *name)
304 if (config_file_name)
305 die("bad config value for '%s' in %s", name, config_file_name);
306 die("bad config value for '%s'", name);
309 int git_config_int(const char *name, const char *value)
312 if (!git_parse_long(value, &ret))
313 die_bad_config(name);
317 unsigned long git_config_ulong(const char *name, const char *value)
320 if (!git_parse_ulong(value, &ret))
321 die_bad_config(name);
325 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
332 if (!strcasecmp(value, "true") || !strcasecmp(value, "yes") || !strcasecmp(value, "on"))
334 if (!strcasecmp(value, "false") || !strcasecmp(value, "no") || !strcasecmp(value, "off"))
337 return git_config_int(name, value);
340 int git_config_bool(const char *name, const char *value)
343 return !!git_config_bool_or_int(name, value, &discard);
346 int git_config_string(const char **dest, const char *var, const char *value)
349 return config_error_nonbool(var);
350 *dest = xstrdup(value);
354 int git_config_pathname(const char **dest, const char *var, const char *value)
357 return config_error_nonbool(var);
358 *dest = expand_user_path(value);
360 die("Failed to expand user dir in: '%s'", value);
364 static int git_default_core_config(const char *var, const char *value)
366 /* This needs a better name */
367 if (!strcmp(var, "core.filemode")) {
368 trust_executable_bit = git_config_bool(var, value);
371 if (!strcmp(var, "core.trustctime")) {
372 trust_ctime = git_config_bool(var, value);
376 if (!strcmp(var, "core.quotepath")) {
377 quote_path_fully = git_config_bool(var, value);
381 if (!strcmp(var, "core.symlinks")) {
382 has_symlinks = git_config_bool(var, value);
386 if (!strcmp(var, "core.ignorecase")) {
387 ignore_case = git_config_bool(var, value);
391 if (!strcmp(var, "core.bare")) {
392 is_bare_repository_cfg = git_config_bool(var, value);
396 if (!strcmp(var, "core.ignorestat")) {
397 assume_unchanged = git_config_bool(var, value);
401 if (!strcmp(var, "core.prefersymlinkrefs")) {
402 prefer_symlink_refs = git_config_bool(var, value);
406 if (!strcmp(var, "core.logallrefupdates")) {
407 log_all_ref_updates = git_config_bool(var, value);
411 if (!strcmp(var, "core.warnambiguousrefs")) {
412 warn_ambiguous_refs = git_config_bool(var, value);
416 if (!strcmp(var, "core.loosecompression")) {
417 int level = git_config_int(var, value);
419 level = Z_DEFAULT_COMPRESSION;
420 else if (level < 0 || level > Z_BEST_COMPRESSION)
421 die("bad zlib compression level %d", level);
422 zlib_compression_level = level;
423 zlib_compression_seen = 1;
427 if (!strcmp(var, "core.compression")) {
428 int level = git_config_int(var, value);
430 level = Z_DEFAULT_COMPRESSION;
431 else if (level < 0 || level > Z_BEST_COMPRESSION)
432 die("bad zlib compression level %d", level);
433 core_compression_level = level;
434 core_compression_seen = 1;
435 if (!zlib_compression_seen)
436 zlib_compression_level = level;
440 if (!strcmp(var, "core.packedgitwindowsize")) {
441 int pgsz_x2 = getpagesize() * 2;
442 packed_git_window_size = git_config_int(var, value);
444 /* This value must be multiple of (pagesize * 2) */
445 packed_git_window_size /= pgsz_x2;
446 if (packed_git_window_size < 1)
447 packed_git_window_size = 1;
448 packed_git_window_size *= pgsz_x2;
452 if (!strcmp(var, "core.packedgitlimit")) {
453 packed_git_limit = git_config_int(var, value);
457 if (!strcmp(var, "core.deltabasecachelimit")) {
458 delta_base_cache_limit = git_config_int(var, value);
462 if (!strcmp(var, "core.autocrlf")) {
463 if (value && !strcasecmp(value, "input")) {
467 auto_crlf = git_config_bool(var, value);
471 if (!strcmp(var, "core.safecrlf")) {
472 if (value && !strcasecmp(value, "warn")) {
473 safe_crlf = SAFE_CRLF_WARN;
476 safe_crlf = git_config_bool(var, value);
480 if (!strcmp(var, "core.notesref")) {
481 notes_ref_name = xstrdup(value);
485 if (!strcmp(var, "core.pager"))
486 return git_config_string(&pager_program, var, value);
488 if (!strcmp(var, "core.editor"))
489 return git_config_string(&editor_program, var, value);
491 if (!strcmp(var, "core.excludesfile"))
492 return git_config_pathname(&excludes_file, var, value);
494 if (!strcmp(var, "core.whitespace")) {
496 return config_error_nonbool(var);
497 whitespace_rule_cfg = parse_whitespace_rule(value);
501 if (!strcmp(var, "core.fsyncobjectfiles")) {
502 fsync_object_files = git_config_bool(var, value);
506 if (!strcmp(var, "core.preloadindex")) {
507 core_preload_index = git_config_bool(var, value);
511 if (!strcmp(var, "core.createobject")) {
512 if (!strcmp(value, "rename"))
513 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
514 else if (!strcmp(value, "link"))
515 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
517 die("Invalid mode for object creation: %s", value);
521 /* Add other config variables here and to Documentation/config.txt. */
525 static int git_default_user_config(const char *var, const char *value)
527 if (!strcmp(var, "user.name")) {
529 return config_error_nonbool(var);
530 strlcpy(git_default_name, value, sizeof(git_default_name));
531 user_ident_explicitly_given |= IDENT_NAME_GIVEN;
535 if (!strcmp(var, "user.email")) {
537 return config_error_nonbool(var);
538 strlcpy(git_default_email, value, sizeof(git_default_email));
539 user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
543 /* Add other config variables here and to Documentation/config.txt. */
547 static int git_default_i18n_config(const char *var, const char *value)
549 if (!strcmp(var, "i18n.commitencoding"))
550 return git_config_string(&git_commit_encoding, var, value);
552 if (!strcmp(var, "i18n.logoutputencoding"))
553 return git_config_string(&git_log_output_encoding, var, value);
555 /* Add other config variables here and to Documentation/config.txt. */
559 static int git_default_branch_config(const char *var, const char *value)
561 if (!strcmp(var, "branch.autosetupmerge")) {
562 if (value && !strcasecmp(value, "always")) {
563 git_branch_track = BRANCH_TRACK_ALWAYS;
566 git_branch_track = git_config_bool(var, value);
569 if (!strcmp(var, "branch.autosetuprebase")) {
571 return config_error_nonbool(var);
572 else if (!strcmp(value, "never"))
573 autorebase = AUTOREBASE_NEVER;
574 else if (!strcmp(value, "local"))
575 autorebase = AUTOREBASE_LOCAL;
576 else if (!strcmp(value, "remote"))
577 autorebase = AUTOREBASE_REMOTE;
578 else if (!strcmp(value, "always"))
579 autorebase = AUTOREBASE_ALWAYS;
581 return error("Malformed value for %s", var);
585 /* Add other config variables here and to Documentation/config.txt. */
589 static int git_default_push_config(const char *var, const char *value)
591 if (!strcmp(var, "push.default")) {
593 return config_error_nonbool(var);
594 else if (!strcmp(value, "nothing"))
595 push_default = PUSH_DEFAULT_NOTHING;
596 else if (!strcmp(value, "matching"))
597 push_default = PUSH_DEFAULT_MATCHING;
598 else if (!strcmp(value, "tracking"))
599 push_default = PUSH_DEFAULT_TRACKING;
600 else if (!strcmp(value, "current"))
601 push_default = PUSH_DEFAULT_CURRENT;
603 error("Malformed value for %s: %s", var, value);
604 return error("Must be one of nothing, matching, "
605 "tracking or current.");
610 /* Add other config variables here and to Documentation/config.txt. */
614 static int git_default_mailmap_config(const char *var, const char *value)
616 if (!strcmp(var, "mailmap.file"))
617 return git_config_string(&git_mailmap_file, var, value);
619 /* Add other config variables here and to Documentation/config.txt. */
623 int git_default_config(const char *var, const char *value, void *dummy)
625 if (!prefixcmp(var, "core."))
626 return git_default_core_config(var, value);
628 if (!prefixcmp(var, "user."))
629 return git_default_user_config(var, value);
631 if (!prefixcmp(var, "i18n."))
632 return git_default_i18n_config(var, value);
634 if (!prefixcmp(var, "branch."))
635 return git_default_branch_config(var, value);
637 if (!prefixcmp(var, "push."))
638 return git_default_push_config(var, value);
640 if (!prefixcmp(var, "mailmap."))
641 return git_default_mailmap_config(var, value);
643 if (!prefixcmp(var, "advice."))
644 return git_default_advice_config(var, value);
646 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
647 pager_use_color = git_config_bool(var,value);
651 /* Add other config variables here and to Documentation/config.txt. */
655 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
658 FILE *f = fopen(filename, "r");
663 config_file_name = filename;
666 ret = git_parse_file(fn, data);
668 config_file_name = NULL;
673 const char *git_etc_gitconfig(void)
675 static const char *system_wide;
677 system_wide = system_path(ETC_GITCONFIG);
681 static int git_env_bool(const char *k, int def)
683 const char *v = getenv(k);
684 return v ? git_config_bool(k, v) : def;
687 int git_config_system(void)
689 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
692 int git_config_global(void)
694 return !git_env_bool("GIT_CONFIG_NOGLOBAL", 0);
697 int git_config(config_fn_t fn, void *data)
699 int ret = 0, found = 0;
700 char *repo_config = NULL;
701 const char *home = NULL;
703 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
704 if (config_exclusive_filename)
705 return git_config_from_file(fn, config_exclusive_filename, data);
706 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
707 ret += git_config_from_file(fn, git_etc_gitconfig(),
712 home = getenv("HOME");
713 if (git_config_global() && home) {
714 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
715 if (!access(user_config, R_OK)) {
716 ret += git_config_from_file(fn, user_config, data);
722 repo_config = git_pathdup("config");
723 if (!access(repo_config, R_OK)) {
724 ret += git_config_from_file(fn, repo_config, data);
734 * Find all the stuff for git_config_set() below.
737 #define MAX_MATCHES 512
743 regex_t *value_regex;
745 size_t offset[MAX_MATCHES];
746 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
750 static int matches(const char *key, const char *value)
752 return !strcmp(key, store.key) &&
753 (store.value_regex == NULL ||
754 (store.do_not_match ^
755 !regexec(store.value_regex, value, 0, NULL, 0)));
758 static int store_aux(const char *key, const char *value, void *cb)
763 switch (store.state) {
765 if (matches(key, value)) {
766 if (store.seen == 1 && store.multi_replace == 0) {
767 warning("%s has multiple values", key);
768 } else if (store.seen >= MAX_MATCHES) {
769 error("too many matches for %s", key);
773 store.offset[store.seen] = ftell(config_file);
779 * What we are looking for is in store.key (both
780 * section and var), and its section part is baselen
781 * long. We found key (again, both section and var).
782 * We would want to know if this key is in the same
783 * section as what we are looking for. We already
784 * know we are in the same section as what should
787 ep = strrchr(key, '.');
788 section_len = ep - key;
790 if ((section_len != store.baselen) ||
791 memcmp(key, store.key, section_len+1)) {
792 store.state = SECTION_END_SEEN;
797 * Do not increment matches: this is no match, but we
798 * just made sure we are in the desired section.
800 store.offset[store.seen] = ftell(config_file);
802 case SECTION_END_SEEN:
804 if (matches(key, value)) {
805 store.offset[store.seen] = ftell(config_file);
806 store.state = KEY_SEEN;
809 if (strrchr(key, '.') - key == store.baselen &&
810 !strncmp(key, store.key, store.baselen)) {
811 store.state = SECTION_SEEN;
812 store.offset[store.seen] = ftell(config_file);
819 static int write_error(const char *filename)
821 error("failed to write new configuration file %s", filename);
823 /* Same error code as "failed to rename". */
827 static int store_write_section(int fd, const char *key)
831 struct strbuf sb = STRBUF_INIT;
833 dot = memchr(key, '.', store.baselen);
835 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
836 for (i = dot - key + 1; i < store.baselen; i++) {
837 if (key[i] == '"' || key[i] == '\\')
838 strbuf_addch(&sb, '\\');
839 strbuf_addch(&sb, key[i]);
841 strbuf_addstr(&sb, "\"]\n");
843 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
846 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
852 static int store_write_pair(int fd, const char *key, const char *value)
855 int length = strlen(key + store.baselen + 1);
856 const char *quote = "";
857 struct strbuf sb = STRBUF_INIT;
860 * Check to see if the value needs to be surrounded with a dq pair.
861 * Note that problematic characters are always backslash-quoted; this
862 * check is about not losing leading or trailing SP and strings that
863 * follow beginning-of-comment characters (i.e. ';' and '#') by the
864 * configuration parser.
868 for (i = 0; value[i]; i++)
869 if (value[i] == ';' || value[i] == '#')
871 if (i && value[i - 1] == ' ')
874 strbuf_addf(&sb, "\t%.*s = %s",
875 length, key + store.baselen + 1, quote);
877 for (i = 0; value[i]; i++)
880 strbuf_addstr(&sb, "\\n");
883 strbuf_addstr(&sb, "\\t");
887 strbuf_addch(&sb, '\\');
889 strbuf_addch(&sb, value[i]);
892 strbuf_addf(&sb, "%s\n", quote);
894 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
900 static ssize_t find_beginning_of_line(const char *contents, size_t size,
901 size_t offset_, int *found_bracket)
903 size_t equal_offset = size, bracket_offset = size;
907 for (offset = offset_-2; offset > 0
908 && contents[offset] != '\n'; offset--)
909 switch (contents[offset]) {
910 case '=': equal_offset = offset; break;
911 case ']': bracket_offset = offset; break;
913 if (offset > 0 && contents[offset-1] == '\\') {
917 if (bracket_offset < equal_offset) {
919 offset = bracket_offset+1;
926 int git_config_set(const char *key, const char *value)
928 return git_config_set_multivar(key, value, NULL, 0);
932 * If value==NULL, unset in (remove from) config,
933 * if value_regex!=NULL, disregard key/value pairs where value does not match.
934 * if multi_replace==0, nothing, or only one matching key/value is replaced,
935 * else all matching key/values (regardless how many) are removed,
936 * before the new pair is written.
938 * Returns 0 on success.
940 * This function does this:
942 * - it locks the config file by creating ".git/config.lock"
944 * - it then parses the config using store_aux() as validator to find
945 * the position on the key/value pair to replace. If it is to be unset,
946 * it must be found exactly once.
948 * - the config file is mmap()ed and the part before the match (if any) is
949 * written to the lock file, then the changed part and the rest.
951 * - the config file is removed and the lock file rename()d to it.
954 int git_config_set_multivar(const char *key, const char *value,
955 const char *value_regex, int multi_replace)
960 char *config_filename;
961 struct lock_file *lock = NULL;
962 const char *last_dot = strrchr(key, '.');
964 if (config_exclusive_filename)
965 config_filename = xstrdup(config_exclusive_filename);
967 config_filename = git_pathdup("config");
970 * Since "key" actually contains the section name and the real
971 * key name separated by a dot, we have to know where the dot is.
974 if (last_dot == NULL) {
975 error("key does not contain a section: %s", key);
979 store.baselen = last_dot - key;
981 store.multi_replace = multi_replace;
984 * Validate the key and while at it, lower case it for matching.
986 store.key = xmalloc(strlen(key) + 1);
988 for (i = 0; key[i]; i++) {
989 unsigned char c = key[i];
992 /* Leave the extended basename untouched.. */
993 if (!dot || i > store.baselen) {
994 if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) {
995 error("invalid key: %s", key);
1001 } else if (c == '\n') {
1002 error("invalid key (newline): %s", key);
1012 * The lock serves a purpose in addition to locking: the new
1013 * contents of .git/config will be written into it.
1015 lock = xcalloc(sizeof(struct lock_file), 1);
1016 fd = hold_lock_file_for_update(lock, config_filename, 0);
1018 error("could not lock config file %s: %s", config_filename, strerror(errno));
1025 * If .git/config does not exist yet, write a minimal version.
1027 in_fd = open(config_filename, O_RDONLY);
1031 if ( ENOENT != errno ) {
1032 error("opening %s: %s", config_filename,
1034 ret = 3; /* same as "invalid config file" */
1037 /* if nothing to unset, error out */
1038 if (value == NULL) {
1043 store.key = (char *)key;
1044 if (!store_write_section(fd, key) ||
1045 !store_write_pair(fd, key, value))
1050 size_t contents_sz, copy_begin, copy_end;
1051 int i, new_line = 0;
1053 if (value_regex == NULL)
1054 store.value_regex = NULL;
1056 if (value_regex[0] == '!') {
1057 store.do_not_match = 1;
1060 store.do_not_match = 0;
1062 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1063 if (regcomp(store.value_regex, value_regex,
1065 error("invalid pattern: %s", value_regex);
1066 free(store.value_regex);
1072 store.offset[0] = 0;
1073 store.state = START;
1077 * After this, store.offset will contain the *end* offset
1078 * of the last match, or remain at 0 if no match was found.
1079 * As a side effect, we make sure to transform only a valid
1080 * existing config file.
1082 if (git_config_from_file(store_aux, config_filename, NULL)) {
1083 error("invalid config file %s", config_filename);
1085 if (store.value_regex != NULL) {
1086 regfree(store.value_regex);
1087 free(store.value_regex);
1094 if (store.value_regex != NULL) {
1095 regfree(store.value_regex);
1096 free(store.value_regex);
1099 /* if nothing to unset, or too many matches, error out */
1100 if ((store.seen == 0 && value == NULL) ||
1101 (store.seen > 1 && multi_replace == 0)) {
1107 contents_sz = xsize_t(st.st_size);
1108 contents = xmmap(NULL, contents_sz, PROT_READ,
1109 MAP_PRIVATE, in_fd, 0);
1112 if (store.seen == 0)
1115 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1116 if (store.offset[i] == 0) {
1117 store.offset[i] = copy_end = contents_sz;
1118 } else if (store.state != KEY_SEEN) {
1119 copy_end = store.offset[i];
1121 copy_end = find_beginning_of_line(
1122 contents, contents_sz,
1123 store.offset[i]-2, &new_line);
1125 if (copy_end > 0 && contents[copy_end-1] != '\n')
1128 /* write the first part of the config */
1129 if (copy_end > copy_begin) {
1130 if (write_in_full(fd, contents + copy_begin,
1131 copy_end - copy_begin) <
1132 copy_end - copy_begin)
1135 write_str_in_full(fd, "\n") != 1)
1138 copy_begin = store.offset[i];
1141 /* write the pair (value == NULL means unset) */
1142 if (value != NULL) {
1143 if (store.state == START) {
1144 if (!store_write_section(fd, key))
1147 if (!store_write_pair(fd, key, value))
1151 /* write the rest of the config */
1152 if (copy_begin < contents_sz)
1153 if (write_in_full(fd, contents + copy_begin,
1154 contents_sz - copy_begin) <
1155 contents_sz - copy_begin)
1158 munmap(contents, contents_sz);
1161 if (commit_lock_file(lock) < 0) {
1162 error("could not commit config file %s", config_filename);
1168 * lock is committed, so don't try to roll it back below.
1169 * NOTE: Since lockfile.c keeps a linked list of all created
1170 * lock_file structures, it isn't safe to free(lock). It's
1171 * better to just leave it hanging around.
1178 rollback_lock_file(lock);
1179 free(config_filename);
1183 ret = write_error(lock->filename);
1188 static int section_name_match (const char *buf, const char *name)
1190 int i = 0, j = 0, dot = 0;
1193 for (i = 1; buf[i] && buf[i] != ']'; i++) {
1194 if (!dot && isspace(buf[i])) {
1196 if (name[j++] != '.')
1198 for (i++; isspace(buf[i]); i++)
1204 if (buf[i] == '\\' && dot)
1206 else if (buf[i] == '"' && dot) {
1207 for (i++; isspace(buf[i]); i++)
1211 if (buf[i] != name[j++])
1214 if (buf[i] == ']' && name[j] == 0) {
1216 * We match, now just find the right length offset by
1217 * gobbling up any whitespace after it, as well
1220 for (; buf[i] && isspace(buf[i]); i++)
1227 /* if new_name == NULL, the section is removed instead */
1228 int git_config_rename_section(const char *old_name, const char *new_name)
1230 int ret = 0, remove = 0;
1231 char *config_filename;
1232 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1236 if (config_exclusive_filename)
1237 config_filename = xstrdup(config_exclusive_filename);
1239 config_filename = git_pathdup("config");
1240 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1242 ret = error("could not lock config file %s", config_filename);
1246 if (!(config_file = fopen(config_filename, "rb"))) {
1247 /* no config file means nothing to rename, no error */
1248 goto unlock_and_out;
1251 while (fgets(buf, sizeof(buf), config_file)) {
1255 for (i = 0; buf[i] && isspace(buf[i]); i++)
1257 if (buf[i] == '[') {
1258 /* it's a section */
1259 int offset = section_name_match(&buf[i], old_name);
1262 if (new_name == NULL) {
1266 store.baselen = strlen(new_name);
1267 if (!store_write_section(out_fd, new_name)) {
1268 ret = write_error(lock->filename);
1272 * We wrote out the new section, with
1273 * a newline, now skip the old
1276 output += offset + i;
1277 if (strlen(output) > 0) {
1279 * More content means there's
1280 * a declaration to put on the
1281 * next line; indent with a
1292 length = strlen(output);
1293 if (write_in_full(out_fd, output, length) != length) {
1294 ret = write_error(lock->filename);
1298 fclose(config_file);
1300 if (commit_lock_file(lock) < 0)
1301 ret = error("could not commit config file %s", config_filename);
1303 free(config_filename);
1308 * Call this to report error for your variable that should not
1309 * get a boolean value (i.e. "[my] var" means "true").
1311 int config_error_nonbool(const char *var)
1313 return error("Missing value for '%s'", var);