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.logpackaccess"))
581 return git_config_string(&log_pack_access, var, value);
583 if (!strcmp(var, "core.autocrlf")) {
584 if (value && !strcasecmp(value, "input")) {
585 if (core_eol == EOL_CRLF)
586 return error("core.autocrlf=input conflicts with core.eol=crlf");
587 auto_crlf = AUTO_CRLF_INPUT;
590 auto_crlf = git_config_bool(var, value);
594 if (!strcmp(var, "core.safecrlf")) {
595 if (value && !strcasecmp(value, "warn")) {
596 safe_crlf = SAFE_CRLF_WARN;
599 safe_crlf = git_config_bool(var, value);
603 if (!strcmp(var, "core.eol")) {
604 if (value && !strcasecmp(value, "lf"))
606 else if (value && !strcasecmp(value, "crlf"))
608 else if (value && !strcasecmp(value, "native"))
609 core_eol = EOL_NATIVE;
611 core_eol = EOL_UNSET;
612 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
613 return error("core.autocrlf=input conflicts with core.eol=crlf");
617 if (!strcmp(var, "core.notesref")) {
618 notes_ref_name = xstrdup(value);
622 if (!strcmp(var, "core.pager"))
623 return git_config_string(&pager_program, var, value);
625 if (!strcmp(var, "core.editor"))
626 return git_config_string(&editor_program, var, value);
628 if (!strcmp(var, "core.askpass"))
629 return git_config_string(&askpass_program, var, value);
631 if (!strcmp(var, "core.excludesfile"))
632 return git_config_pathname(&excludes_file, var, value);
634 if (!strcmp(var, "core.whitespace")) {
636 return config_error_nonbool(var);
637 whitespace_rule_cfg = parse_whitespace_rule(value);
641 if (!strcmp(var, "core.fsyncobjectfiles")) {
642 fsync_object_files = git_config_bool(var, value);
646 if (!strcmp(var, "core.preloadindex")) {
647 core_preload_index = git_config_bool(var, value);
651 if (!strcmp(var, "core.createobject")) {
652 if (!strcmp(value, "rename"))
653 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
654 else if (!strcmp(value, "link"))
655 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
657 die("Invalid mode for object creation: %s", value);
661 if (!strcmp(var, "core.sparsecheckout")) {
662 core_apply_sparse_checkout = git_config_bool(var, value);
666 /* Add other config variables here and to Documentation/config.txt. */
670 static int git_default_user_config(const char *var, const char *value)
672 if (!strcmp(var, "user.name")) {
674 return config_error_nonbool(var);
675 strlcpy(git_default_name, value, sizeof(git_default_name));
676 user_ident_explicitly_given |= IDENT_NAME_GIVEN;
680 if (!strcmp(var, "user.email")) {
682 return config_error_nonbool(var);
683 strlcpy(git_default_email, value, sizeof(git_default_email));
684 user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
688 /* Add other config variables here and to Documentation/config.txt. */
692 static int git_default_i18n_config(const char *var, const char *value)
694 if (!strcmp(var, "i18n.commitencoding"))
695 return git_config_string(&git_commit_encoding, var, value);
697 if (!strcmp(var, "i18n.logoutputencoding"))
698 return git_config_string(&git_log_output_encoding, var, value);
700 /* Add other config variables here and to Documentation/config.txt. */
704 static int git_default_branch_config(const char *var, const char *value)
706 if (!strcmp(var, "branch.autosetupmerge")) {
707 if (value && !strcasecmp(value, "always")) {
708 git_branch_track = BRANCH_TRACK_ALWAYS;
711 git_branch_track = git_config_bool(var, value);
714 if (!strcmp(var, "branch.autosetuprebase")) {
716 return config_error_nonbool(var);
717 else if (!strcmp(value, "never"))
718 autorebase = AUTOREBASE_NEVER;
719 else if (!strcmp(value, "local"))
720 autorebase = AUTOREBASE_LOCAL;
721 else if (!strcmp(value, "remote"))
722 autorebase = AUTOREBASE_REMOTE;
723 else if (!strcmp(value, "always"))
724 autorebase = AUTOREBASE_ALWAYS;
726 return error("Malformed value for %s", var);
730 /* Add other config variables here and to Documentation/config.txt. */
734 static int git_default_push_config(const char *var, const char *value)
736 if (!strcmp(var, "push.default")) {
738 return config_error_nonbool(var);
739 else if (!strcmp(value, "nothing"))
740 push_default = PUSH_DEFAULT_NOTHING;
741 else if (!strcmp(value, "matching"))
742 push_default = PUSH_DEFAULT_MATCHING;
743 else if (!strcmp(value, "upstream"))
744 push_default = PUSH_DEFAULT_UPSTREAM;
745 else if (!strcmp(value, "tracking")) /* deprecated */
746 push_default = PUSH_DEFAULT_UPSTREAM;
747 else if (!strcmp(value, "current"))
748 push_default = PUSH_DEFAULT_CURRENT;
750 error("Malformed value for %s: %s", var, value);
751 return error("Must be one of nothing, matching, "
752 "tracking or current.");
757 /* Add other config variables here and to Documentation/config.txt. */
761 static int git_default_mailmap_config(const char *var, const char *value)
763 if (!strcmp(var, "mailmap.file"))
764 return git_config_string(&git_mailmap_file, var, value);
766 /* Add other config variables here and to Documentation/config.txt. */
770 int git_default_config(const char *var, const char *value, void *dummy)
772 if (!prefixcmp(var, "core."))
773 return git_default_core_config(var, value);
775 if (!prefixcmp(var, "user."))
776 return git_default_user_config(var, value);
778 if (!prefixcmp(var, "i18n."))
779 return git_default_i18n_config(var, value);
781 if (!prefixcmp(var, "branch."))
782 return git_default_branch_config(var, value);
784 if (!prefixcmp(var, "push."))
785 return git_default_push_config(var, value);
787 if (!prefixcmp(var, "mailmap."))
788 return git_default_mailmap_config(var, value);
790 if (!prefixcmp(var, "advice."))
791 return git_default_advice_config(var, value);
793 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
794 pager_use_color = git_config_bool(var,value);
798 if (!prefixcmp(var, "credential."))
799 return git_default_credential_config(var, value);
801 /* Add other config variables here and to Documentation/config.txt. */
805 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
808 FILE *f = fopen(filename, "r");
814 /* push config-file parsing state stack */
820 strbuf_init(&top.value, 1024);
823 ret = git_parse_file(fn, data);
825 /* pop config-file parsing state stack */
826 strbuf_release(&top.value);
834 const char *git_etc_gitconfig(void)
836 static const char *system_wide;
838 system_wide = system_path(ETC_GITCONFIG);
842 int git_env_bool(const char *k, int def)
844 const char *v = getenv(k);
845 return v ? git_config_bool(k, v) : def;
848 int git_config_system(void)
850 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
853 int git_config_early(config_fn_t fn, void *data, const char *repo_config)
855 int ret = 0, found = 0;
856 const char *home = NULL;
858 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
859 if (config_exclusive_filename)
860 return git_config_from_file(fn, config_exclusive_filename, data);
861 if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
862 ret += git_config_from_file(fn, git_etc_gitconfig(),
867 home = getenv("HOME");
869 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
870 if (!access(user_config, R_OK)) {
871 ret += git_config_from_file(fn, user_config, data);
877 if (repo_config && !access(repo_config, R_OK)) {
878 ret += git_config_from_file(fn, repo_config, data);
882 switch (git_config_from_parameters(fn, data)) {
884 die("unable to parse command-line config");
886 case 0: /* found nothing */
888 default: /* found at least one item */
893 return ret == 0 ? found : ret;
896 int git_config(config_fn_t fn, void *data)
898 char *repo_config = NULL;
901 repo_config = git_pathdup("config");
902 ret = git_config_early(fn, data, repo_config);
909 * Find all the stuff for git_config_set() below.
912 #define MAX_MATCHES 512
918 regex_t *value_regex;
920 size_t offset[MAX_MATCHES];
921 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
925 static int matches(const char *key, const char *value)
927 return !strcmp(key, store.key) &&
928 (store.value_regex == NULL ||
929 (store.do_not_match ^
930 !regexec(store.value_regex, value, 0, NULL, 0)));
933 static int store_aux(const char *key, const char *value, void *cb)
939 switch (store.state) {
941 if (matches(key, value)) {
942 if (store.seen == 1 && store.multi_replace == 0) {
943 warning("%s has multiple values", key);
944 } else if (store.seen >= MAX_MATCHES) {
945 error("too many matches for %s", key);
949 store.offset[store.seen] = ftell(f);
955 * What we are looking for is in store.key (both
956 * section and var), and its section part is baselen
957 * long. We found key (again, both section and var).
958 * We would want to know if this key is in the same
959 * section as what we are looking for. We already
960 * know we are in the same section as what should
963 ep = strrchr(key, '.');
964 section_len = ep - key;
966 if ((section_len != store.baselen) ||
967 memcmp(key, store.key, section_len+1)) {
968 store.state = SECTION_END_SEEN;
973 * Do not increment matches: this is no match, but we
974 * just made sure we are in the desired section.
976 store.offset[store.seen] = ftell(f);
978 case SECTION_END_SEEN:
980 if (matches(key, value)) {
981 store.offset[store.seen] = ftell(f);
982 store.state = KEY_SEEN;
985 if (strrchr(key, '.') - key == store.baselen &&
986 !strncmp(key, store.key, store.baselen)) {
987 store.state = SECTION_SEEN;
988 store.offset[store.seen] = ftell(f);
995 static int write_error(const char *filename)
997 error("failed to write new configuration file %s", filename);
999 /* Same error code as "failed to rename". */
1003 static int store_write_section(int fd, const char *key)
1007 struct strbuf sb = STRBUF_INIT;
1009 dot = memchr(key, '.', store.baselen);
1011 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1012 for (i = dot - key + 1; i < store.baselen; i++) {
1013 if (key[i] == '"' || key[i] == '\\')
1014 strbuf_addch(&sb, '\\');
1015 strbuf_addch(&sb, key[i]);
1017 strbuf_addstr(&sb, "\"]\n");
1019 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1022 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1023 strbuf_release(&sb);
1028 static int store_write_pair(int fd, const char *key, const char *value)
1031 int length = strlen(key + store.baselen + 1);
1032 const char *quote = "";
1033 struct strbuf sb = STRBUF_INIT;
1036 * Check to see if the value needs to be surrounded with a dq pair.
1037 * Note that problematic characters are always backslash-quoted; this
1038 * check is about not losing leading or trailing SP and strings that
1039 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1040 * configuration parser.
1042 if (value[0] == ' ')
1044 for (i = 0; value[i]; i++)
1045 if (value[i] == ';' || value[i] == '#')
1047 if (i && value[i - 1] == ' ')
1050 strbuf_addf(&sb, "\t%.*s = %s",
1051 length, key + store.baselen + 1, quote);
1053 for (i = 0; value[i]; i++)
1056 strbuf_addstr(&sb, "\\n");
1059 strbuf_addstr(&sb, "\\t");
1063 strbuf_addch(&sb, '\\');
1065 strbuf_addch(&sb, value[i]);
1068 strbuf_addf(&sb, "%s\n", quote);
1070 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1071 strbuf_release(&sb);
1076 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1077 size_t offset_, int *found_bracket)
1079 size_t equal_offset = size, bracket_offset = size;
1083 for (offset = offset_-2; offset > 0
1084 && contents[offset] != '\n'; offset--)
1085 switch (contents[offset]) {
1086 case '=': equal_offset = offset; break;
1087 case ']': bracket_offset = offset; break;
1089 if (offset > 0 && contents[offset-1] == '\\') {
1093 if (bracket_offset < equal_offset) {
1095 offset = bracket_offset+1;
1102 int git_config_set(const char *key, const char *value)
1104 return git_config_set_multivar(key, value, NULL, 0);
1108 * Auxiliary function to sanity-check and split the key into the section
1109 * identifier and variable name.
1111 * Returns 0 on success, -1 when there is an invalid character in the key and
1112 * -2 if there is no section name in the key.
1114 * store_key - pointer to char* which will hold a copy of the key with
1115 * lowercase section and variable name
1116 * baselen - pointer to int which will hold the length of the
1117 * section + subsection part, can be NULL
1119 int git_config_parse_key(const char *key, char **store_key, int *baselen_)
1121 int i, dot, baselen;
1122 const char *last_dot = strrchr(key, '.');
1125 * Since "key" actually contains the section name and the real
1126 * key name separated by a dot, we have to know where the dot is.
1129 if (last_dot == NULL || last_dot == key) {
1130 error("key does not contain a section: %s", key);
1131 return -CONFIG_NO_SECTION_OR_NAME;
1135 error("key does not contain variable name: %s", key);
1136 return -CONFIG_NO_SECTION_OR_NAME;
1139 baselen = last_dot - key;
1141 *baselen_ = baselen;
1144 * Validate the key and while at it, lower case it for matching.
1146 *store_key = xmalloc(strlen(key) + 1);
1149 for (i = 0; key[i]; i++) {
1150 unsigned char c = key[i];
1153 /* Leave the extended basename untouched.. */
1154 if (!dot || i > baselen) {
1155 if (!iskeychar(c) ||
1156 (i == baselen + 1 && !isalpha(c))) {
1157 error("invalid key: %s", key);
1158 goto out_free_ret_1;
1161 } else if (c == '\n') {
1162 error("invalid key (newline): %s", key);
1163 goto out_free_ret_1;
1165 (*store_key)[i] = c;
1167 (*store_key)[i] = 0;
1173 return -CONFIG_INVALID_KEY;
1177 * If value==NULL, unset in (remove from) config,
1178 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1179 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1180 * else all matching key/values (regardless how many) are removed,
1181 * before the new pair is written.
1183 * Returns 0 on success.
1185 * This function does this:
1187 * - it locks the config file by creating ".git/config.lock"
1189 * - it then parses the config using store_aux() as validator to find
1190 * the position on the key/value pair to replace. If it is to be unset,
1191 * it must be found exactly once.
1193 * - the config file is mmap()ed and the part before the match (if any) is
1194 * written to the lock file, then the changed part and the rest.
1196 * - the config file is removed and the lock file rename()d to it.
1199 int git_config_set_multivar(const char *key, const char *value,
1200 const char *value_regex, int multi_replace)
1204 char *config_filename;
1205 struct lock_file *lock = NULL;
1207 if (config_exclusive_filename)
1208 config_filename = xstrdup(config_exclusive_filename);
1210 config_filename = git_pathdup("config");
1212 /* parse-key returns negative; flip the sign to feed exit(3) */
1213 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
1217 store.multi_replace = multi_replace;
1221 * The lock serves a purpose in addition to locking: the new
1222 * contents of .git/config will be written into it.
1224 lock = xcalloc(sizeof(struct lock_file), 1);
1225 fd = hold_lock_file_for_update(lock, config_filename, 0);
1227 error("could not lock config file %s: %s", config_filename, strerror(errno));
1229 ret = CONFIG_NO_LOCK;
1234 * If .git/config does not exist yet, write a minimal version.
1236 in_fd = open(config_filename, O_RDONLY);
1240 if ( ENOENT != errno ) {
1241 error("opening %s: %s", config_filename,
1243 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
1246 /* if nothing to unset, error out */
1247 if (value == NULL) {
1248 ret = CONFIG_NOTHING_SET;
1252 store.key = (char *)key;
1253 if (!store_write_section(fd, key) ||
1254 !store_write_pair(fd, key, value))
1259 size_t contents_sz, copy_begin, copy_end;
1260 int i, new_line = 0;
1262 if (value_regex == NULL)
1263 store.value_regex = NULL;
1265 if (value_regex[0] == '!') {
1266 store.do_not_match = 1;
1269 store.do_not_match = 0;
1271 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1272 if (regcomp(store.value_regex, value_regex,
1274 error("invalid pattern: %s", value_regex);
1275 free(store.value_regex);
1276 ret = CONFIG_INVALID_PATTERN;
1281 store.offset[0] = 0;
1282 store.state = START;
1286 * After this, store.offset will contain the *end* offset
1287 * of the last match, or remain at 0 if no match was found.
1288 * As a side effect, we make sure to transform only a valid
1289 * existing config file.
1291 if (git_config_from_file(store_aux, config_filename, NULL)) {
1292 error("invalid config file %s", config_filename);
1294 if (store.value_regex != NULL) {
1295 regfree(store.value_regex);
1296 free(store.value_regex);
1298 ret = CONFIG_INVALID_FILE;
1303 if (store.value_regex != NULL) {
1304 regfree(store.value_regex);
1305 free(store.value_regex);
1308 /* if nothing to unset, or too many matches, error out */
1309 if ((store.seen == 0 && value == NULL) ||
1310 (store.seen > 1 && multi_replace == 0)) {
1311 ret = CONFIG_NOTHING_SET;
1316 contents_sz = xsize_t(st.st_size);
1317 contents = xmmap(NULL, contents_sz, PROT_READ,
1318 MAP_PRIVATE, in_fd, 0);
1321 if (store.seen == 0)
1324 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1325 if (store.offset[i] == 0) {
1326 store.offset[i] = copy_end = contents_sz;
1327 } else if (store.state != KEY_SEEN) {
1328 copy_end = store.offset[i];
1330 copy_end = find_beginning_of_line(
1331 contents, contents_sz,
1332 store.offset[i]-2, &new_line);
1334 if (copy_end > 0 && contents[copy_end-1] != '\n')
1337 /* write the first part of the config */
1338 if (copy_end > copy_begin) {
1339 if (write_in_full(fd, contents + copy_begin,
1340 copy_end - copy_begin) <
1341 copy_end - copy_begin)
1344 write_str_in_full(fd, "\n") != 1)
1347 copy_begin = store.offset[i];
1350 /* write the pair (value == NULL means unset) */
1351 if (value != NULL) {
1352 if (store.state == START) {
1353 if (!store_write_section(fd, key))
1356 if (!store_write_pair(fd, key, value))
1360 /* write the rest of the config */
1361 if (copy_begin < contents_sz)
1362 if (write_in_full(fd, contents + copy_begin,
1363 contents_sz - copy_begin) <
1364 contents_sz - copy_begin)
1367 munmap(contents, contents_sz);
1370 if (commit_lock_file(lock) < 0) {
1371 error("could not commit config file %s", config_filename);
1372 ret = CONFIG_NO_WRITE;
1377 * lock is committed, so don't try to roll it back below.
1378 * NOTE: Since lockfile.c keeps a linked list of all created
1379 * lock_file structures, it isn't safe to free(lock). It's
1380 * better to just leave it hanging around.
1387 rollback_lock_file(lock);
1388 free(config_filename);
1392 ret = write_error(lock->filename);
1397 static int section_name_match (const char *buf, const char *name)
1399 int i = 0, j = 0, dot = 0;
1402 for (i = 1; buf[i] && buf[i] != ']'; i++) {
1403 if (!dot && isspace(buf[i])) {
1405 if (name[j++] != '.')
1407 for (i++; isspace(buf[i]); i++)
1413 if (buf[i] == '\\' && dot)
1415 else if (buf[i] == '"' && dot) {
1416 for (i++; isspace(buf[i]); i++)
1420 if (buf[i] != name[j++])
1423 if (buf[i] == ']' && name[j] == 0) {
1425 * We match, now just find the right length offset by
1426 * gobbling up any whitespace after it, as well
1429 for (; buf[i] && isspace(buf[i]); i++)
1436 /* if new_name == NULL, the section is removed instead */
1437 int git_config_rename_section(const char *old_name, const char *new_name)
1439 int ret = 0, remove = 0;
1440 char *config_filename;
1441 struct lock_file *lock = xcalloc(sizeof(struct lock_file), 1);
1446 if (config_exclusive_filename)
1447 config_filename = xstrdup(config_exclusive_filename);
1449 config_filename = git_pathdup("config");
1450 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1452 ret = error("could not lock config file %s", config_filename);
1456 if (!(config_file = fopen(config_filename, "rb"))) {
1457 /* no config file means nothing to rename, no error */
1458 goto unlock_and_out;
1461 while (fgets(buf, sizeof(buf), config_file)) {
1465 for (i = 0; buf[i] && isspace(buf[i]); i++)
1467 if (buf[i] == '[') {
1468 /* it's a section */
1469 int offset = section_name_match(&buf[i], old_name);
1472 if (new_name == NULL) {
1476 store.baselen = strlen(new_name);
1477 if (!store_write_section(out_fd, new_name)) {
1478 ret = write_error(lock->filename);
1482 * We wrote out the new section, with
1483 * a newline, now skip the old
1486 output += offset + i;
1487 if (strlen(output) > 0) {
1489 * More content means there's
1490 * a declaration to put on the
1491 * next line; indent with a
1502 length = strlen(output);
1503 if (write_in_full(out_fd, output, length) != length) {
1504 ret = write_error(lock->filename);
1508 fclose(config_file);
1510 if (commit_lock_file(lock) < 0)
1511 ret = error("could not commit config file %s", config_filename);
1513 free(config_filename);
1518 * Call this to report error for your variable that should not
1519 * get a boolean value (i.e. "[my] var" means "true").
1521 int config_error_nonbool(const char *var)
1523 return error("Missing value for '%s'", var);