2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
15 static FILE *config_file;
16 static const char *config_file_name;
17 static int config_linenr;
18 static int config_file_eof;
19 static int zlib_compression_seen;
21 const char *config_exclusive_filename = NULL;
23 static void lowercase(char *p)
29 void git_config_push_parameter(const char *text)
31 struct strbuf env = STRBUF_INIT;
32 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
34 strbuf_addstr(&env, old);
35 strbuf_addch(&env, ' ');
37 sq_quote_buf(&env, text);
38 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
42 static int git_config_parse_parameter(const char *text,
43 config_fn_t fn, void *data)
45 struct strbuf tmp = STRBUF_INIT;
47 strbuf_addstr(&tmp, text);
48 pair = strbuf_split_max(&tmp, '=', 2);
50 return error("bogus config parameter: %s", text);
51 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=')
52 strbuf_setlen(pair[0], pair[0]->len - 1);
55 strbuf_list_free(pair);
56 return error("bogus config parameter: %s", text);
58 lowercase(pair[0]->buf);
59 if (fn(pair[0]->buf, pair[1] ? pair[1]->buf : NULL, data) < 0) {
60 strbuf_list_free(pair);
63 strbuf_list_free(pair);
67 int git_config_from_parameters(config_fn_t fn, void *data)
69 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
71 const char **argv = NULL;
72 int nr = 0, alloc = 0;
77 /* sq_dequote will write over it */
80 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
82 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
85 for (i = 0; i < nr; i++) {
86 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
98 static int get_next_char(void)
104 if ((f = config_file) != NULL) {
107 /* DOS like systems */
124 static char *parse_value(void)
126 static char value[1024];
127 int quote = 0, comment = 0, len = 0, space = 0;
130 int c = get_next_char();
131 if (len >= sizeof(value) - 1)
141 if (isspace(c) && !quote) {
147 if (c == ';' || c == '#') {
152 for (; space; space--)
168 /* Some characters escape as themselves */
171 /* Reject unknown escape sequences */
186 static inline int iskeychar(int c)
188 return isalnum(c) || c == '-';
191 static int get_value(config_fn_t fn, void *data, char *name, unsigned int len)
196 /* Get the full name */
203 name[len++] = tolower(c);
208 while (c == ' ' || c == '\t')
215 value = parse_value();
219 return fn(name, value, data);
222 static int get_extended_base_var(char *name, int baselen, int c)
228 } while (isspace(c));
230 /* We require the format to be '[base "extension"]' */
233 name[baselen++] = '.';
236 int c = get_next_char();
247 if (baselen > MAXNAME / 2)
252 if (get_next_char() != ']')
257 static int get_base_var(char *name)
262 int c = get_next_char();
268 return get_extended_base_var(name, baselen, c);
269 if (!iskeychar(c) && c != '.')
271 if (baselen > MAXNAME / 2)
273 name[baselen++] = tolower(c);
277 static int git_parse_file(config_fn_t fn, void *data)
281 static char var[MAXNAME];
283 /* U+FEFF Byte Order Mark in UTF8 */
284 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
285 const unsigned char *bomptr = utf8_bom;
288 int c = get_next_char();
289 if (bomptr && *bomptr) {
290 /* We are at the file beginning; skip UTF8-encoded BOM
291 * if present. Sane editors won't put this in on their
292 * own, but e.g. Windows Notepad will do it happily. */
293 if ((unsigned char) c == *bomptr) {
297 /* Do not tolerate partial BOM. */
298 if (bomptr != utf8_bom)
300 /* No BOM at file beginning. Cool. */
310 if (comment || isspace(c))
312 if (c == '#' || c == ';') {
317 baselen = get_base_var(var);
320 var[baselen++] = '.';
326 var[baselen] = tolower(c);
327 if (get_value(fn, data, var, baselen+1) < 0)
330 die("bad config file line %d in %s", config_linenr, config_file_name);
333 static int parse_unit_factor(const char *end, unsigned long *val)
337 else if (!strcasecmp(end, "k")) {
341 else if (!strcasecmp(end, "m")) {
345 else if (!strcasecmp(end, "g")) {
346 *val *= 1024 * 1024 * 1024;
352 static int git_parse_long(const char *value, long *ret)
354 if (value && *value) {
356 long val = strtol(value, &end, 0);
357 unsigned long factor = 1;
358 if (!parse_unit_factor(end, &factor))
366 int git_parse_ulong(const char *value, unsigned long *ret)
368 if (value && *value) {
370 unsigned long val = strtoul(value, &end, 0);
371 if (!parse_unit_factor(end, &val))
379 static void die_bad_config(const char *name)
381 if (config_file_name)
382 die("bad config value for '%s' in %s", name, config_file_name);
383 die("bad config value for '%s'", name);
386 int git_config_int(const char *name, const char *value)
389 if (!git_parse_long(value, &ret))
390 die_bad_config(name);
394 unsigned long git_config_ulong(const char *name, const char *value)
397 if (!git_parse_ulong(value, &ret))
398 die_bad_config(name);
402 static int git_config_maybe_bool_text(const char *name, const char *value)
408 if (!strcasecmp(value, "true")
409 || !strcasecmp(value, "yes")
410 || !strcasecmp(value, "on"))
412 if (!strcasecmp(value, "false")
413 || !strcasecmp(value, "no")
414 || !strcasecmp(value, "off"))
419 int git_config_maybe_bool(const char *name, const char *value)
421 long v = git_config_maybe_bool_text(name, value);
424 if (git_parse_long(value, &v))
429 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
431 int v = git_config_maybe_bool_text(name, value);
437 return git_config_int(name, value);
440 int git_config_bool(const char *name, const char *value)
443 return !!git_config_bool_or_int(name, value, &discard);
446 int git_config_string(const char **dest, const char *var, const char *value)
449 return config_error_nonbool(var);
450 *dest = xstrdup(value);
454 int git_config_pathname(const char **dest, const char *var, const char *value)
457 return config_error_nonbool(var);
458 *dest = expand_user_path(value);
460 die("Failed to expand user dir in: '%s'", value);
464 static int git_default_core_config(const char *var, const char *value)
466 /* This needs a better name */
467 if (!strcmp(var, "core.filemode")) {
468 trust_executable_bit = git_config_bool(var, value);
471 if (!strcmp(var, "core.trustctime")) {
472 trust_ctime = git_config_bool(var, value);
476 if (!strcmp(var, "core.quotepath")) {
477 quote_path_fully = git_config_bool(var, value);
481 if (!strcmp(var, "core.symlinks")) {
482 has_symlinks = git_config_bool(var, value);
486 if (!strcmp(var, "core.ignorecase")) {
487 ignore_case = git_config_bool(var, value);
491 if (!strcmp(var, "core.bare")) {
492 is_bare_repository_cfg = git_config_bool(var, value);
496 if (!strcmp(var, "core.ignorestat")) {
497 assume_unchanged = git_config_bool(var, value);
501 if (!strcmp(var, "core.prefersymlinkrefs")) {
502 prefer_symlink_refs = git_config_bool(var, value);
506 if (!strcmp(var, "core.logallrefupdates")) {
507 log_all_ref_updates = git_config_bool(var, value);
511 if (!strcmp(var, "core.warnambiguousrefs")) {
512 warn_ambiguous_refs = git_config_bool(var, value);
516 if (!strcmp(var, "core.abbrev")) {
517 int abbrev = git_config_int(var, value);
518 if (abbrev < minimum_abbrev || abbrev > 40)
520 default_abbrev = abbrev;
524 if (!strcmp(var, "core.loosecompression")) {
525 int level = git_config_int(var, value);
527 level = Z_DEFAULT_COMPRESSION;
528 else if (level < 0 || level > Z_BEST_COMPRESSION)
529 die("bad zlib compression level %d", level);
530 zlib_compression_level = level;
531 zlib_compression_seen = 1;
535 if (!strcmp(var, "core.compression")) {
536 int level = git_config_int(var, value);
538 level = Z_DEFAULT_COMPRESSION;
539 else if (level < 0 || level > Z_BEST_COMPRESSION)
540 die("bad zlib compression level %d", level);
541 core_compression_level = level;
542 core_compression_seen = 1;
543 if (!zlib_compression_seen)
544 zlib_compression_level = level;
548 if (!strcmp(var, "core.packedgitwindowsize")) {
549 int pgsz_x2 = getpagesize() * 2;
550 packed_git_window_size = git_config_int(var, value);
552 /* This value must be multiple of (pagesize * 2) */
553 packed_git_window_size /= pgsz_x2;
554 if (packed_git_window_size < 1)
555 packed_git_window_size = 1;
556 packed_git_window_size *= pgsz_x2;
560 if (!strcmp(var, "core.bigfilethreshold")) {
561 long n = git_config_int(var, value);
562 big_file_threshold = 0 < n ? n : 0;
566 if (!strcmp(var, "core.packedgitlimit")) {
567 packed_git_limit = git_config_int(var, value);
571 if (!strcmp(var, "core.deltabasecachelimit")) {
572 delta_base_cache_limit = git_config_int(var, value);
576 if (!strcmp(var, "core.autocrlf")) {
577 if (value && !strcasecmp(value, "input")) {
579 return error("core.autocrlf=input conflicts with core.eol=crlf");
580 auto_crlf = AUTO_CRLF_INPUT;
583 auto_crlf = git_config_bool(var, value);
587 if (!strcmp(var, "core.safecrlf")) {
588 if (value && !strcasecmp(value, "warn")) {
589 safe_crlf = SAFE_CRLF_WARN;
592 safe_crlf = git_config_bool(var, value);
596 if (!strcmp(var, "core.eol")) {
597 if (value && !strcasecmp(value, "lf"))
599 else if (value && !strcasecmp(value, "crlf"))
601 else if (value && !strcasecmp(value, "native"))
605 if (eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
606 return error("core.autocrlf=input conflicts with core.eol=crlf");
610 if (!strcmp(var, "core.notesref")) {
611 notes_ref_name = xstrdup(value);
615 if (!strcmp(var, "core.pager"))
616 return git_config_string(&pager_program, var, value);
618 if (!strcmp(var, "core.editor"))
619 return git_config_string(&editor_program, var, value);
621 if (!strcmp(var, "core.askpass"))
622 return git_config_string(&askpass_program, var, value);
624 if (!strcmp(var, "core.excludesfile"))
625 return git_config_pathname(&excludes_file, var, value);
627 if (!strcmp(var, "core.whitespace")) {
629 return config_error_nonbool(var);
630 whitespace_rule_cfg = parse_whitespace_rule(value);
634 if (!strcmp(var, "core.fsyncobjectfiles")) {
635 fsync_object_files = git_config_bool(var, value);
639 if (!strcmp(var, "core.preloadindex")) {
640 core_preload_index = git_config_bool(var, value);
644 if (!strcmp(var, "core.createobject")) {
645 if (!strcmp(value, "rename"))
646 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
647 else if (!strcmp(value, "link"))
648 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
650 die("Invalid mode for object creation: %s", value);
654 if (!strcmp(var, "core.sparsecheckout")) {
655 core_apply_sparse_checkout = git_config_bool(var, value);
659 /* Add other config variables here and to Documentation/config.txt. */
663 static int git_default_user_config(const char *var, const char *value)
665 if (!strcmp(var, "user.name")) {
667 return config_error_nonbool(var);
668 strlcpy(git_default_name, value, sizeof(git_default_name));
669 user_ident_explicitly_given |= IDENT_NAME_GIVEN;
673 if (!strcmp(var, "user.email")) {
675 return config_error_nonbool(var);
676 strlcpy(git_default_email, value, sizeof(git_default_email));
677 user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
681 /* Add other config variables here and to Documentation/config.txt. */
685 static int git_default_i18n_config(const char *var, const char *value)
687 if (!strcmp(var, "i18n.commitencoding"))
688 return git_config_string(&git_commit_encoding, var, value);
690 if (!strcmp(var, "i18n.logoutputencoding"))
691 return git_config_string(&git_log_output_encoding, var, value);
693 /* Add other config variables here and to Documentation/config.txt. */
697 static int git_default_branch_config(const char *var, const char *value)
699 if (!strcmp(var, "branch.autosetupmerge")) {
700 if (value && !strcasecmp(value, "always")) {
701 git_branch_track = BRANCH_TRACK_ALWAYS;
704 git_branch_track = git_config_bool(var, value);
707 if (!strcmp(var, "branch.autosetuprebase")) {
709 return config_error_nonbool(var);
710 else if (!strcmp(value, "never"))
711 autorebase = AUTOREBASE_NEVER;
712 else if (!strcmp(value, "local"))
713 autorebase = AUTOREBASE_LOCAL;
714 else if (!strcmp(value, "remote"))
715 autorebase = AUTOREBASE_REMOTE;
716 else if (!strcmp(value, "always"))
717 autorebase = AUTOREBASE_ALWAYS;
719 return error("Malformed value for %s", var);
723 /* Add other config variables here and to Documentation/config.txt. */
727 static int git_default_push_config(const char *var, const char *value)
729 if (!strcmp(var, "push.default")) {
731 return config_error_nonbool(var);
732 else if (!strcmp(value, "nothing"))
733 push_default = PUSH_DEFAULT_NOTHING;
734 else if (!strcmp(value, "matching"))
735 push_default = PUSH_DEFAULT_MATCHING;
736 else if (!strcmp(value, "upstream"))
737 push_default = PUSH_DEFAULT_UPSTREAM;
738 else if (!strcmp(value, "tracking")) /* deprecated */
739 push_default = PUSH_DEFAULT_UPSTREAM;
740 else if (!strcmp(value, "current"))
741 push_default = PUSH_DEFAULT_CURRENT;
743 error("Malformed value for %s: %s", var, value);
744 return error("Must be one of nothing, matching, "
745 "tracking or current.");
750 /* Add other config variables here and to Documentation/config.txt. */
754 static int git_default_mailmap_config(const char *var, const char *value)
756 if (!strcmp(var, "mailmap.file"))
757 return git_config_string(&git_mailmap_file, var, value);
759 /* Add other config variables here and to Documentation/config.txt. */
763 int git_default_config(const char *var, const char *value, void *dummy)
765 if (!prefixcmp(var, "core."))
766 return git_default_core_config(var, value);
768 if (!prefixcmp(var, "user."))
769 return git_default_user_config(var, value);
771 if (!prefixcmp(var, "i18n."))
772 return git_default_i18n_config(var, value);
774 if (!prefixcmp(var, "branch."))
775 return git_default_branch_config(var, value);
777 if (!prefixcmp(var, "push."))
778 return git_default_push_config(var, value);
780 if (!prefixcmp(var, "mailmap."))
781 return git_default_mailmap_config(var, value);
783 if (!prefixcmp(var, "advice."))
784 return git_default_advice_config(var, value);
786 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
787 pager_use_color = git_config_bool(var,value);
791 /* Add other config variables here and to Documentation/config.txt. */
795 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
798 FILE *f = fopen(filename, "r");
803 config_file_name = filename;
806 ret = git_parse_file(fn, data);
808 config_file_name = NULL;
813 const char *git_etc_gitconfig(void)
815 static const char *system_wide;
817 system_wide = system_path(ETC_GITCONFIG);
821 int git_env_bool(const char *k, int def)
823 const char *v = getenv(k);
824 return v ? git_config_bool(k, v) : def;
827 int git_config_system(void)
829 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
832 int git_config_early(config_fn_t fn, void *data, const char *repo_config)
834 int ret = 0, found = 0;
835 const char *home = NULL;
837 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
838 if (config_exclusive_filename)
839 return git_config_from_file(fn, config_exclusive_filename, data);
840 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
841 ret += git_config_from_file(fn, git_etc_gitconfig(),
846 home = getenv("HOME");
848 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
849 if (!access(user_config, R_OK)) {
850 ret += git_config_from_file(fn, user_config, data);
856 if (repo_config && !access(repo_config, R_OK)) {
857 ret += git_config_from_file(fn, repo_config, data);
861 switch (git_config_from_parameters(fn, data)) {
863 die("unable to parse command-line config");
865 case 0: /* found nothing */
867 default: /* found at least one item */
872 return ret == 0 ? found : ret;
875 int git_config(config_fn_t fn, void *data)
877 char *repo_config = NULL;
880 repo_config = git_pathdup("config");
881 ret = git_config_early(fn, data, repo_config);
888 * Find all the stuff for git_config_set() below.
891 #define MAX_MATCHES 512
897 regex_t *value_regex;
899 size_t offset[MAX_MATCHES];
900 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
904 static int matches(const char *key, const char *value)
906 return !strcmp(key, store.key) &&
907 (store.value_regex == NULL ||
908 (store.do_not_match ^
909 !regexec(store.value_regex, value, 0, NULL, 0)));
912 static int store_aux(const char *key, const char *value, void *cb)
917 switch (store.state) {
919 if (matches(key, value)) {
920 if (store.seen == 1 && store.multi_replace == 0) {
921 warning("%s has multiple values", key);
922 } else if (store.seen >= MAX_MATCHES) {
923 error("too many matches for %s", key);
927 store.offset[store.seen] = ftell(config_file);
933 * What we are looking for is in store.key (both
934 * section and var), and its section part is baselen
935 * long. We found key (again, both section and var).
936 * We would want to know if this key is in the same
937 * section as what we are looking for. We already
938 * know we are in the same section as what should
941 ep = strrchr(key, '.');
942 section_len = ep - key;
944 if ((section_len != store.baselen) ||
945 memcmp(key, store.key, section_len+1)) {
946 store.state = SECTION_END_SEEN;
951 * Do not increment matches: this is no match, but we
952 * just made sure we are in the desired section.
954 store.offset[store.seen] = ftell(config_file);
956 case SECTION_END_SEEN:
958 if (matches(key, value)) {
959 store.offset[store.seen] = ftell(config_file);
960 store.state = KEY_SEEN;
963 if (strrchr(key, '.') - key == store.baselen &&
964 !strncmp(key, store.key, store.baselen)) {
965 store.state = SECTION_SEEN;
966 store.offset[store.seen] = ftell(config_file);
973 static int write_error(const char *filename)
975 error("failed to write new configuration file %s", filename);
977 /* Same error code as "failed to rename". */
981 static int store_write_section(int fd, const char *key)
985 struct strbuf sb = STRBUF_INIT;
987 dot = memchr(key, '.', store.baselen);
989 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
990 for (i = dot - key + 1; i < store.baselen; i++) {
991 if (key[i] == '"' || key[i] == '\\')
992 strbuf_addch(&sb, '\\');
993 strbuf_addch(&sb, key[i]);
995 strbuf_addstr(&sb, "\"]\n");
997 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1000 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1001 strbuf_release(&sb);
1006 static int store_write_pair(int fd, const char *key, const char *value)
1009 int length = strlen(key + store.baselen + 1);
1010 const char *quote = "";
1011 struct strbuf sb = STRBUF_INIT;
1014 * Check to see if the value needs to be surrounded with a dq pair.
1015 * Note that problematic characters are always backslash-quoted; this
1016 * check is about not losing leading or trailing SP and strings that
1017 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1018 * configuration parser.
1020 if (value[0] == ' ')
1022 for (i = 0; value[i]; i++)
1023 if (value[i] == ';' || value[i] == '#')
1025 if (i && value[i - 1] == ' ')
1028 strbuf_addf(&sb, "\t%.*s = %s",
1029 length, key + store.baselen + 1, quote);
1031 for (i = 0; value[i]; i++)
1034 strbuf_addstr(&sb, "\\n");
1037 strbuf_addstr(&sb, "\\t");
1041 strbuf_addch(&sb, '\\');
1043 strbuf_addch(&sb, value[i]);
1046 strbuf_addf(&sb, "%s\n", quote);
1048 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1049 strbuf_release(&sb);
1054 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1055 size_t offset_, int *found_bracket)
1057 size_t equal_offset = size, bracket_offset = size;
1061 for (offset = offset_-2; offset > 0
1062 && contents[offset] != '\n'; offset--)
1063 switch (contents[offset]) {
1064 case '=': equal_offset = offset; break;
1065 case ']': bracket_offset = offset; break;
1067 if (offset > 0 && contents[offset-1] == '\\') {
1071 if (bracket_offset < equal_offset) {
1073 offset = bracket_offset+1;
1080 int git_config_set(const char *key, const char *value)
1082 return git_config_set_multivar(key, value, NULL, 0);
1086 * Auxiliary function to sanity-check and split the key into the section
1087 * identifier and variable name.
1089 * Returns 0 on success, -1 when there is an invalid character in the key and
1090 * -2 if there is no section name in the key.
1092 * store_key - pointer to char* which will hold a copy of the key with
1093 * lowercase section and variable name
1094 * baselen - pointer to int which will hold the length of the
1095 * section + subsection part, can be NULL
1097 int git_config_parse_key(const char *key, char **store_key, int *baselen_)
1099 int i, dot, baselen;
1100 const char *last_dot = strrchr(key, '.');
1103 * Since "key" actually contains the section name and the real
1104 * key name separated by a dot, we have to know where the dot is.
1107 if (last_dot == NULL || last_dot == key) {
1108 error("key does not contain a section: %s", key);
1113 error("key does not contain variable name: %s", key);
1117 baselen = last_dot - key;
1119 *baselen_ = baselen;
1122 * Validate the key and while at it, lower case it for matching.
1124 *store_key = xmalloc(strlen(key) + 1);
1127 for (i = 0; key[i]; i++) {
1128 unsigned char c = key[i];
1131 /* Leave the extended basename untouched.. */
1132 if (!dot || i > baselen) {
1133 if (!iskeychar(c) ||
1134 (i == baselen + 1 && !isalpha(c))) {
1135 error("invalid key: %s", key);
1136 goto out_free_ret_1;
1139 } else if (c == '\n') {
1140 error("invalid key (newline): %s", key);
1141 goto out_free_ret_1;
1143 (*store_key)[i] = c;
1145 (*store_key)[i] = 0;
1155 * If value==NULL, unset in (remove from) config,
1156 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1157 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1158 * else all matching key/values (regardless how many) are removed,
1159 * before the new pair is written.
1161 * Returns 0 on success.
1163 * This function does this:
1165 * - it locks the config file by creating ".git/config.lock"
1167 * - it then parses the config using store_aux() as validator to find
1168 * the position on the key/value pair to replace. If it is to be unset,
1169 * it must be found exactly once.
1171 * - the config file is mmap()ed and the part before the match (if any) is
1172 * written to the lock file, then the changed part and the rest.
1174 * - the config file is removed and the lock file rename()d to it.
1177 int git_config_set_multivar(const char *key, const char *value,
1178 const char *value_regex, int multi_replace)
1182 char *config_filename;
1183 struct lock_file *lock = NULL;
1185 if (config_exclusive_filename)
1186 config_filename = xstrdup(config_exclusive_filename);
1188 config_filename = git_pathdup("config");
1190 /* parse-key returns negative; flip the sign to feed exit(3) */
1191 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
1195 store.multi_replace = multi_replace;
1199 * The lock serves a purpose in addition to locking: the new
1200 * contents of .git/config will be written into it.
1202 lock = xcalloc(sizeof(struct lock_file), 1);
1203 fd = hold_lock_file_for_update(lock, config_filename, 0);
1205 error("could not lock config file %s: %s", config_filename, strerror(errno));
1212 * If .git/config does not exist yet, write a minimal version.
1214 in_fd = open(config_filename, O_RDONLY);
1218 if ( ENOENT != errno ) {
1219 error("opening %s: %s", config_filename,
1221 ret = 3; /* same as "invalid config file" */
1224 /* if nothing to unset, error out */
1225 if (value == NULL) {
1230 store.key = (char *)key;
1231 if (!store_write_section(fd, key) ||
1232 !store_write_pair(fd, key, value))
1237 size_t contents_sz, copy_begin, copy_end;
1238 int i, new_line = 0;
1240 if (value_regex == NULL)
1241 store.value_regex = NULL;
1243 if (value_regex[0] == '!') {
1244 store.do_not_match = 1;
1247 store.do_not_match = 0;
1249 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1250 if (regcomp(store.value_regex, value_regex,
1252 error("invalid pattern: %s", value_regex);
1253 free(store.value_regex);
1259 store.offset[0] = 0;
1260 store.state = START;
1264 * After this, store.offset will contain the *end* offset
1265 * of the last match, or remain at 0 if no match was found.
1266 * As a side effect, we make sure to transform only a valid
1267 * existing config file.
1269 if (git_config_from_file(store_aux, config_filename, NULL)) {
1270 error("invalid config file %s", config_filename);
1272 if (store.value_regex != NULL) {
1273 regfree(store.value_regex);
1274 free(store.value_regex);
1281 if (store.value_regex != NULL) {
1282 regfree(store.value_regex);
1283 free(store.value_regex);
1286 /* if nothing to unset, or too many matches, error out */
1287 if ((store.seen == 0 && value == NULL) ||
1288 (store.seen > 1 && multi_replace == 0)) {
1294 contents_sz = xsize_t(st.st_size);
1295 contents = xmmap(NULL, contents_sz, PROT_READ,
1296 MAP_PRIVATE, in_fd, 0);
1299 if (store.seen == 0)
1302 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1303 if (store.offset[i] == 0) {
1304 store.offset[i] = copy_end = contents_sz;
1305 } else if (store.state != KEY_SEEN) {
1306 copy_end = store.offset[i];
1308 copy_end = find_beginning_of_line(
1309 contents, contents_sz,
1310 store.offset[i]-2, &new_line);
1312 if (copy_end > 0 && contents[copy_end-1] != '\n')
1315 /* write the first part of the config */
1316 if (copy_end > copy_begin) {
1317 if (write_in_full(fd, contents + copy_begin,
1318 copy_end - copy_begin) <
1319 copy_end - copy_begin)
1322 write_str_in_full(fd, "\n") != 1)
1325 copy_begin = store.offset[i];
1328 /* write the pair (value == NULL means unset) */
1329 if (value != NULL) {
1330 if (store.state == START) {
1331 if (!store_write_section(fd, key))
1334 if (!store_write_pair(fd, key, value))
1338 /* write the rest of the config */
1339 if (copy_begin < contents_sz)
1340 if (write_in_full(fd, contents + copy_begin,
1341 contents_sz - copy_begin) <
1342 contents_sz - copy_begin)
1345 munmap(contents, contents_sz);
1348 if (commit_lock_file(lock) < 0) {
1349 error("could not commit config file %s", config_filename);
1355 * lock is committed, so don't try to roll it back below.
1356 * NOTE: Since lockfile.c keeps a linked list of all created
1357 * lock_file structures, it isn't safe to free(lock). It's
1358 * better to just leave it hanging around.
1365 rollback_lock_file(lock);
1366 free(config_filename);
1370 ret = write_error(lock->filename);
1375 static int section_name_match (const char *buf, const char *name)
1377 int i = 0, j = 0, dot = 0;
1380 for (i = 1; buf[i] && buf[i] != ']'; i++) {
1381 if (!dot && isspace(buf[i])) {
1383 if (name[j++] != '.')
1385 for (i++; isspace(buf[i]); i++)
1391 if (buf[i] == '\\' && dot)
1393 else if (buf[i] == '"' && dot) {
1394 for (i++; isspace(buf[i]); i++)
1398 if (buf[i] != name[j++])
1401 if (buf[i] == ']' && name[j] == 0) {
1403 * We match, now just find the right length offset by
1404 * gobbling up any whitespace after it, as well
1407 for (; buf[i] && isspace(buf[i]); i++)
1414 /* if new_name == NULL, the section is removed instead */
1415 int git_config_rename_section(const char *old_name, const char *new_name)
1417 int ret = 0, remove = 0;
1418 char *config_filename;
1419 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1423 if (config_exclusive_filename)
1424 config_filename = xstrdup(config_exclusive_filename);
1426 config_filename = git_pathdup("config");
1427 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1429 ret = error("could not lock config file %s", config_filename);
1433 if (!(config_file = fopen(config_filename, "rb"))) {
1434 /* no config file means nothing to rename, no error */
1435 goto unlock_and_out;
1438 while (fgets(buf, sizeof(buf), config_file)) {
1442 for (i = 0; buf[i] && isspace(buf[i]); i++)
1444 if (buf[i] == '[') {
1445 /* it's a section */
1446 int offset = section_name_match(&buf[i], old_name);
1449 if (new_name == NULL) {
1453 store.baselen = strlen(new_name);
1454 if (!store_write_section(out_fd, new_name)) {
1455 ret = write_error(lock->filename);
1459 * We wrote out the new section, with
1460 * a newline, now skip the old
1463 output += offset + i;
1464 if (strlen(output) > 0) {
1466 * More content means there's
1467 * a declaration to put on the
1468 * next line; indent with a
1479 length = strlen(output);
1480 if (write_in_full(out_fd, output, length) != length) {
1481 ret = write_error(lock->filename);
1485 fclose(config_file);
1487 if (commit_lock_file(lock) < 0)
1488 ret = error("could not commit config file %s", config_filename);
1490 free(config_filename);
1495 * Call this to report error for your variable that should not
1496 * get a boolean value (i.e. "[my] var" means "true").
1498 int config_error_nonbool(const char *var)
1500 return error("Missing value for '%s'", var);