2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
14 #include "string-list.h"
17 struct config_source {
18 struct config_source *prev;
35 int (*do_fgetc)(struct config_source *c);
36 int (*do_ungetc)(int c, struct config_source *conf);
37 long (*do_ftell)(struct config_source *c);
40 static struct config_source *cf;
42 static int zlib_compression_seen;
45 * Default config_set that contains key-value pairs from the usual set of config
46 * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
47 * config file and the global /etc/gitconfig)
49 static struct config_set the_config_set;
51 static int config_file_fgetc(struct config_source *conf)
53 return getc_unlocked(conf->u.file);
56 static int config_file_ungetc(int c, struct config_source *conf)
58 return ungetc(c, conf->u.file);
61 static long config_file_ftell(struct config_source *conf)
63 return ftell(conf->u.file);
67 static int config_buf_fgetc(struct config_source *conf)
69 if (conf->u.buf.pos < conf->u.buf.len)
70 return conf->u.buf.buf[conf->u.buf.pos++];
75 static int config_buf_ungetc(int c, struct config_source *conf)
77 if (conf->u.buf.pos > 0) {
79 if (conf->u.buf.buf[conf->u.buf.pos] != c)
80 die("BUG: config_buf can only ungetc the same character");
87 static long config_buf_ftell(struct config_source *conf)
89 return conf->u.buf.pos;
92 #define MAX_INCLUDE_DEPTH 10
93 static const char include_depth_advice[] =
94 "exceeded maximum include depth (%d) while including\n"
98 "Do you have circular includes?";
99 static int handle_path_include(const char *path, struct config_include_data *inc)
102 struct strbuf buf = STRBUF_INIT;
106 return config_error_nonbool("include.path");
108 expanded = expand_user_path(path);
110 return error("Could not expand include path '%s'", path);
114 * Use an absolute path as-is, but interpret relative paths
115 * based on the including config file.
117 if (!is_absolute_path(path)) {
120 if (!cf || !cf->path)
121 return error("relative config includes must come from files");
123 slash = find_last_dir_sep(cf->path);
125 strbuf_add(&buf, cf->path, slash - cf->path + 1);
126 strbuf_addstr(&buf, path);
130 if (!access_or_die(path, R_OK, 0)) {
131 if (++inc->depth > MAX_INCLUDE_DEPTH)
132 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
133 cf && cf->name ? cf->name : "the command line");
134 ret = git_config_from_file(git_config_include, path, inc);
137 strbuf_release(&buf);
142 int git_config_include(const char *var, const char *value, void *data)
144 struct config_include_data *inc = data;
148 * Pass along all values, including "include" directives; this makes it
149 * possible to query information on the includes themselves.
151 ret = inc->fn(var, value, inc->data);
155 if (!strcmp(var, "include.path"))
156 ret = handle_path_include(value, inc);
160 void git_config_push_parameter(const char *text)
162 struct strbuf env = STRBUF_INIT;
163 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
165 strbuf_addstr(&env, old);
166 strbuf_addch(&env, ' ');
168 sq_quote_buf(&env, text);
169 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
170 strbuf_release(&env);
173 int git_config_parse_parameter(const char *text,
174 config_fn_t fn, void *data)
177 struct strbuf **pair;
179 pair = strbuf_split_str(text, '=', 2);
181 return error("bogus config parameter: %s", text);
183 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
184 strbuf_setlen(pair[0], pair[0]->len - 1);
185 value = pair[1] ? pair[1]->buf : "";
190 strbuf_trim(pair[0]);
192 strbuf_list_free(pair);
193 return error("bogus config parameter: %s", text);
195 strbuf_tolower(pair[0]);
196 if (fn(pair[0]->buf, value, data) < 0) {
197 strbuf_list_free(pair);
200 strbuf_list_free(pair);
204 int git_config_from_parameters(config_fn_t fn, void *data)
206 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
208 const char **argv = NULL;
209 int nr = 0, alloc = 0;
214 /* sq_dequote will write over it */
217 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
219 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
222 for (i = 0; i < nr; i++) {
223 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
235 static int get_next_char(void)
237 int c = cf->do_fgetc(cf);
240 /* DOS like systems */
241 c = cf->do_fgetc(cf);
244 cf->do_ungetc(c, cf);
258 static char *parse_value(void)
260 int quote = 0, comment = 0, space = 0;
262 strbuf_reset(&cf->value);
264 int c = get_next_char();
270 return cf->value.buf;
274 if (isspace(c) && !quote) {
280 if (c == ';' || c == '#') {
285 for (; space; space--)
286 strbuf_addch(&cf->value, ' ');
301 /* Some characters escape as themselves */
304 /* Reject unknown escape sequences */
308 strbuf_addch(&cf->value, c);
315 strbuf_addch(&cf->value, c);
319 static inline int iskeychar(int c)
321 return isalnum(c) || c == '-';
324 static int get_value(config_fn_t fn, void *data, struct strbuf *name)
330 /* Get the full name */
337 strbuf_addch(name, tolower(c));
340 while (c == ' ' || c == '\t')
347 value = parse_value();
352 * We already consumed the \n, but we need linenr to point to
353 * the line we just parsed during the call to fn to get
354 * accurate line number in error messages.
357 ret = fn(name->buf, value, data);
362 static int get_extended_base_var(struct strbuf *name, int c)
366 goto error_incomplete_line;
368 } while (isspace(c));
370 /* We require the format to be '[base "extension"]' */
373 strbuf_addch(name, '.');
376 int c = get_next_char();
378 goto error_incomplete_line;
384 goto error_incomplete_line;
386 strbuf_addch(name, c);
390 if (get_next_char() != ']')
393 error_incomplete_line:
398 static int get_base_var(struct strbuf *name)
401 int c = get_next_char();
407 return get_extended_base_var(name, c);
408 if (!iskeychar(c) && c != '.')
410 strbuf_addch(name, tolower(c));
414 static int git_parse_source(config_fn_t fn, void *data)
418 struct strbuf *var = &cf->var;
420 /* U+FEFF Byte Order Mark in UTF8 */
421 const char *bomptr = utf8_bom;
424 int c = get_next_char();
425 if (bomptr && *bomptr) {
426 /* We are at the file beginning; skip UTF8-encoded BOM
427 * if present. Sane editors won't put this in on their
428 * own, but e.g. Windows Notepad will do it happily. */
429 if (c == (*bomptr & 0377)) {
433 /* Do not tolerate partial BOM. */
434 if (bomptr != utf8_bom)
436 /* No BOM at file beginning. Cool. */
446 if (comment || isspace(c))
448 if (c == '#' || c == ';') {
453 /* Reset prior to determining a new stem */
455 if (get_base_var(var) < 0 || var->len < 1)
457 strbuf_addch(var, '.');
464 * Truncate the var name back to the section header
465 * stem prior to grabbing the suffix part of the name
468 strbuf_setlen(var, baselen);
469 strbuf_addch(var, tolower(c));
470 if (get_value(fn, data, var) < 0)
473 if (cf->die_on_error)
474 die(_("bad config file line %d in %s"), cf->linenr, cf->name);
476 return error(_("bad config file line %d in %s"), cf->linenr, cf->name);
479 static int parse_unit_factor(const char *end, uintmax_t *val)
483 else if (!strcasecmp(end, "k")) {
487 else if (!strcasecmp(end, "m")) {
491 else if (!strcasecmp(end, "g")) {
492 *val *= 1024 * 1024 * 1024;
498 static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
500 if (value && *value) {
504 uintmax_t factor = 1;
507 val = strtoimax(value, &end, 0);
510 if (!parse_unit_factor(end, &factor)) {
516 if (uval > max || labs(val) > uval) {
528 static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
530 if (value && *value) {
536 val = strtoumax(value, &end, 0);
540 if (!parse_unit_factor(end, &val)) {
544 if (val > max || oldval > val) {
555 static int git_parse_int(const char *value, int *ret)
558 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
564 static int git_parse_int64(const char *value, int64_t *ret)
567 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
573 int git_parse_ulong(const char *value, unsigned long *ret)
576 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
583 static void die_bad_number(const char *name, const char *value)
585 const char *reason = errno == ERANGE ?
592 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
593 value, name, cf->name, reason);
594 die(_("bad numeric config value '%s' for '%s': %s"), value, name, reason);
597 int git_config_int(const char *name, const char *value)
600 if (!git_parse_int(value, &ret))
601 die_bad_number(name, value);
605 int64_t git_config_int64(const char *name, const char *value)
608 if (!git_parse_int64(value, &ret))
609 die_bad_number(name, value);
613 unsigned long git_config_ulong(const char *name, const char *value)
616 if (!git_parse_ulong(value, &ret))
617 die_bad_number(name, value);
621 int git_parse_maybe_bool(const char *value)
627 if (!strcasecmp(value, "true")
628 || !strcasecmp(value, "yes")
629 || !strcasecmp(value, "on"))
631 if (!strcasecmp(value, "false")
632 || !strcasecmp(value, "no")
633 || !strcasecmp(value, "off"))
638 int git_config_maybe_bool(const char *name, const char *value)
640 int v = git_parse_maybe_bool(value);
643 if (git_parse_int(value, &v))
648 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
650 int v = git_parse_maybe_bool(value);
656 return git_config_int(name, value);
659 int git_config_bool(const char *name, const char *value)
662 return !!git_config_bool_or_int(name, value, &discard);
665 int git_config_string(const char **dest, const char *var, const char *value)
668 return config_error_nonbool(var);
669 *dest = xstrdup(value);
673 int git_config_pathname(const char **dest, const char *var, const char *value)
676 return config_error_nonbool(var);
677 *dest = expand_user_path(value);
679 die(_("failed to expand user dir in: '%s'"), value);
683 static int git_default_core_config(const char *var, const char *value)
685 /* This needs a better name */
686 if (!strcmp(var, "core.filemode")) {
687 trust_executable_bit = git_config_bool(var, value);
690 if (!strcmp(var, "core.trustctime")) {
691 trust_ctime = git_config_bool(var, value);
694 if (!strcmp(var, "core.checkstat")) {
695 if (!strcasecmp(value, "default"))
697 else if (!strcasecmp(value, "minimal"))
701 if (!strcmp(var, "core.quotepath")) {
702 quote_path_fully = git_config_bool(var, value);
706 if (!strcmp(var, "core.symlinks")) {
707 has_symlinks = git_config_bool(var, value);
711 if (!strcmp(var, "core.ignorecase")) {
712 ignore_case = git_config_bool(var, value);
716 if (!strcmp(var, "core.attributesfile"))
717 return git_config_pathname(&git_attributes_file, var, value);
719 if (!strcmp(var, "core.bare")) {
720 is_bare_repository_cfg = git_config_bool(var, value);
724 if (!strcmp(var, "core.ignorestat")) {
725 assume_unchanged = git_config_bool(var, value);
729 if (!strcmp(var, "core.prefersymlinkrefs")) {
730 prefer_symlink_refs = git_config_bool(var, value);
734 if (!strcmp(var, "core.logallrefupdates")) {
735 log_all_ref_updates = git_config_bool(var, value);
739 if (!strcmp(var, "core.warnambiguousrefs")) {
740 warn_ambiguous_refs = git_config_bool(var, value);
744 if (!strcmp(var, "core.abbrev")) {
745 int abbrev = git_config_int(var, value);
746 if (abbrev < minimum_abbrev || abbrev > 40)
748 default_abbrev = abbrev;
752 if (!strcmp(var, "core.loosecompression")) {
753 int level = git_config_int(var, value);
755 level = Z_DEFAULT_COMPRESSION;
756 else if (level < 0 || level > Z_BEST_COMPRESSION)
757 die(_("bad zlib compression level %d"), level);
758 zlib_compression_level = level;
759 zlib_compression_seen = 1;
763 if (!strcmp(var, "core.compression")) {
764 int level = git_config_int(var, value);
766 level = Z_DEFAULT_COMPRESSION;
767 else if (level < 0 || level > Z_BEST_COMPRESSION)
768 die(_("bad zlib compression level %d"), level);
769 core_compression_level = level;
770 core_compression_seen = 1;
771 if (!zlib_compression_seen)
772 zlib_compression_level = level;
776 if (!strcmp(var, "core.packedgitwindowsize")) {
777 int pgsz_x2 = getpagesize() * 2;
778 packed_git_window_size = git_config_ulong(var, value);
780 /* This value must be multiple of (pagesize * 2) */
781 packed_git_window_size /= pgsz_x2;
782 if (packed_git_window_size < 1)
783 packed_git_window_size = 1;
784 packed_git_window_size *= pgsz_x2;
788 if (!strcmp(var, "core.bigfilethreshold")) {
789 big_file_threshold = git_config_ulong(var, value);
793 if (!strcmp(var, "core.packedgitlimit")) {
794 packed_git_limit = git_config_ulong(var, value);
798 if (!strcmp(var, "core.deltabasecachelimit")) {
799 delta_base_cache_limit = git_config_ulong(var, value);
803 if (!strcmp(var, "core.autocrlf")) {
804 if (value && !strcasecmp(value, "input")) {
805 if (core_eol == EOL_CRLF)
806 return error("core.autocrlf=input conflicts with core.eol=crlf");
807 auto_crlf = AUTO_CRLF_INPUT;
810 auto_crlf = git_config_bool(var, value);
814 if (!strcmp(var, "core.safecrlf")) {
815 if (value && !strcasecmp(value, "warn")) {
816 safe_crlf = SAFE_CRLF_WARN;
819 safe_crlf = git_config_bool(var, value);
823 if (!strcmp(var, "core.eol")) {
824 if (value && !strcasecmp(value, "lf"))
826 else if (value && !strcasecmp(value, "crlf"))
828 else if (value && !strcasecmp(value, "native"))
829 core_eol = EOL_NATIVE;
831 core_eol = EOL_UNSET;
832 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
833 return error("core.autocrlf=input conflicts with core.eol=crlf");
837 if (!strcmp(var, "core.notesref")) {
838 notes_ref_name = xstrdup(value);
842 if (!strcmp(var, "core.pager"))
843 return git_config_string(&pager_program, var, value);
845 if (!strcmp(var, "core.editor"))
846 return git_config_string(&editor_program, var, value);
848 if (!strcmp(var, "core.commentchar")) {
850 return config_error_nonbool(var);
851 else if (!strcasecmp(value, "auto"))
852 auto_comment_line_char = 1;
853 else if (value[0] && !value[1]) {
854 comment_line_char = value[0];
855 auto_comment_line_char = 0;
857 return error("core.commentChar should only be one character");
861 if (!strcmp(var, "core.askpass"))
862 return git_config_string(&askpass_program, var, value);
864 if (!strcmp(var, "core.excludesfile"))
865 return git_config_pathname(&excludes_file, var, value);
867 if (!strcmp(var, "core.whitespace")) {
869 return config_error_nonbool(var);
870 whitespace_rule_cfg = parse_whitespace_rule(value);
874 if (!strcmp(var, "core.fsyncobjectfiles")) {
875 fsync_object_files = git_config_bool(var, value);
879 if (!strcmp(var, "core.preloadindex")) {
880 core_preload_index = git_config_bool(var, value);
884 if (!strcmp(var, "core.createobject")) {
885 if (!strcmp(value, "rename"))
886 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
887 else if (!strcmp(value, "link"))
888 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
890 die(_("invalid mode for object creation: %s"), value);
894 if (!strcmp(var, "core.sparsecheckout")) {
895 core_apply_sparse_checkout = git_config_bool(var, value);
899 if (!strcmp(var, "core.precomposeunicode")) {
900 precomposed_unicode = git_config_bool(var, value);
904 if (!strcmp(var, "core.protecthfs")) {
905 protect_hfs = git_config_bool(var, value);
909 if (!strcmp(var, "core.protectntfs")) {
910 protect_ntfs = git_config_bool(var, value);
914 if (!strcmp(var, "core.mode")) {
916 return config_error_nonbool(var);
917 else if (!strcmp(value, "current"))
918 git_mode = MODE_CURRENT;
919 else if (!strcmp(value, "next")) {
920 git_mode = MODE_NEXT;
921 } else if (!strcmp(value, "progress")) {
922 git_mode = MODE_PROGRESS;
923 fetch_default = FETCH_DEFAULT_SIMPLE;
925 die("wrong mode '%s'", value);
929 /* Add other config variables here and to Documentation/config.txt. */
933 static int git_default_i18n_config(const char *var, const char *value)
935 if (!strcmp(var, "i18n.commitencoding"))
936 return git_config_string(&git_commit_encoding, var, value);
938 if (!strcmp(var, "i18n.logoutputencoding"))
939 return git_config_string(&git_log_output_encoding, var, value);
941 /* Add other config variables here and to Documentation/config.txt. */
945 static int git_default_branch_config(const char *var, const char *value)
947 if (!strcmp(var, "branch.autosetupmerge")) {
948 if (value && !strcasecmp(value, "always")) {
949 git_branch_track = BRANCH_TRACK_ALWAYS;
952 git_branch_track = git_config_bool(var, value);
955 if (!strcmp(var, "branch.autosetuprebase")) {
957 return config_error_nonbool(var);
958 else if (!strcmp(value, "never"))
959 autorebase = AUTOREBASE_NEVER;
960 else if (!strcmp(value, "local"))
961 autorebase = AUTOREBASE_LOCAL;
962 else if (!strcmp(value, "remote"))
963 autorebase = AUTOREBASE_REMOTE;
964 else if (!strcmp(value, "always"))
965 autorebase = AUTOREBASE_ALWAYS;
967 return error("Malformed value for %s", var);
971 /* Add other config variables here and to Documentation/config.txt. */
975 static int git_default_push_config(const char *var, const char *value)
977 if (!strcmp(var, "push.default")) {
979 return config_error_nonbool(var);
980 else if (!strcmp(value, "nothing"))
981 push_default = PUSH_DEFAULT_NOTHING;
982 else if (!strcmp(value, "matching"))
983 push_default = PUSH_DEFAULT_MATCHING;
984 else if (!strcmp(value, "simple"))
985 push_default = PUSH_DEFAULT_SIMPLE;
986 else if (!strcmp(value, "upstream"))
987 push_default = PUSH_DEFAULT_UPSTREAM;
988 else if (!strcmp(value, "tracking")) /* deprecated */
989 push_default = PUSH_DEFAULT_UPSTREAM;
990 else if (!strcmp(value, "current"))
991 push_default = PUSH_DEFAULT_CURRENT;
993 error("Malformed value for %s: %s", var, value);
994 return error("Must be one of nothing, matching, simple, "
995 "upstream or current.");
1000 /* Add other config variables here and to Documentation/config.txt. */
1004 static int git_default_fetch_config(const char *var, const char *value)
1006 if (strcmp(var, "fetch.default"))
1010 return config_error_nonbool(var);
1011 else if (!strcmp(value, "simple"))
1012 fetch_default = FETCH_DEFAULT_SIMPLE;
1013 else if (!strcmp(value, "current"))
1014 fetch_default = FETCH_DEFAULT_CURRENT;
1016 error("Malformed value for %s: %s", var, value);
1017 return error("Must be simple, or current.");
1022 static int git_default_mailmap_config(const char *var, const char *value)
1024 if (!strcmp(var, "mailmap.file"))
1025 return git_config_pathname(&git_mailmap_file, var, value);
1026 if (!strcmp(var, "mailmap.blob"))
1027 return git_config_string(&git_mailmap_blob, var, value);
1029 /* Add other config variables here and to Documentation/config.txt. */
1033 int git_default_config(const char *var, const char *value, void *dummy)
1035 if (starts_with(var, "core."))
1036 return git_default_core_config(var, value);
1038 if (starts_with(var, "user."))
1039 return git_ident_config(var, value, dummy);
1041 if (starts_with(var, "i18n."))
1042 return git_default_i18n_config(var, value);
1044 if (starts_with(var, "branch."))
1045 return git_default_branch_config(var, value);
1047 if (starts_with(var, "push."))
1048 return git_default_push_config(var, value);
1050 if (starts_with(var, "fetch."))
1051 return git_default_fetch_config(var, value);
1053 if (starts_with(var, "mailmap."))
1054 return git_default_mailmap_config(var, value);
1056 if (starts_with(var, "advice."))
1057 return git_default_advice_config(var, value);
1059 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1060 pager_use_color = git_config_bool(var,value);
1064 if (!strcmp(var, "pack.packsizelimit")) {
1065 pack_size_limit_cfg = git_config_ulong(var, value);
1068 /* Add other config variables here and to Documentation/config.txt. */
1073 * All source specific fields in the union, die_on_error, name and the callbacks
1074 * fgetc, ungetc, ftell of top need to be initialized before calling
1077 static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
1081 /* push config-file parsing state stack */
1085 strbuf_init(&top->value, 1024);
1086 strbuf_init(&top->var, 1024);
1089 ret = git_parse_source(fn, data);
1091 /* pop config-file parsing state stack */
1092 strbuf_release(&top->value);
1093 strbuf_release(&top->var);
1099 static int do_config_from_file(config_fn_t fn,
1100 const char *name, const char *path, FILE *f, void *data)
1102 struct config_source top;
1107 top.die_on_error = 1;
1108 top.do_fgetc = config_file_fgetc;
1109 top.do_ungetc = config_file_ungetc;
1110 top.do_ftell = config_file_ftell;
1112 return do_config_from(&top, fn, data);
1115 static int git_config_from_stdin(config_fn_t fn, void *data)
1117 return do_config_from_file(fn, "<stdin>", NULL, stdin, data);
1120 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1125 f = fopen(filename, "r");
1128 ret = do_config_from_file(fn, filename, filename, f, data);
1135 int git_config_from_buf(config_fn_t fn, const char *name, const char *buf,
1136 size_t len, void *data)
1138 struct config_source top;
1140 top.u.buf.buf = buf;
1141 top.u.buf.len = len;
1145 top.die_on_error = 0;
1146 top.do_fgetc = config_buf_fgetc;
1147 top.do_ungetc = config_buf_ungetc;
1148 top.do_ftell = config_buf_ftell;
1150 return do_config_from(&top, fn, data);
1153 static int git_config_from_blob_sha1(config_fn_t fn,
1155 const unsigned char *sha1,
1158 enum object_type type;
1163 buf = read_sha1_file(sha1, &type, &size);
1165 return error("unable to load config blob object '%s'", name);
1166 if (type != OBJ_BLOB) {
1168 return error("reference '%s' does not point to a blob", name);
1171 ret = git_config_from_buf(fn, name, buf, size, data);
1177 static int git_config_from_blob_ref(config_fn_t fn,
1181 unsigned char sha1[20];
1183 if (get_sha1(name, sha1) < 0)
1184 return error("unable to resolve config blob '%s'", name);
1185 return git_config_from_blob_sha1(fn, name, sha1, data);
1188 const char *git_etc_gitconfig(void)
1190 static const char *system_wide;
1192 system_wide = system_path(ETC_GITCONFIG);
1197 * Parse environment variable 'k' as a boolean (in various
1198 * possible spellings); if missing, use the default value 'def'.
1200 int git_env_bool(const char *k, int def)
1202 const char *v = getenv(k);
1203 return v ? git_config_bool(k, v) : def;
1207 * Parse environment variable 'k' as ulong with possibly a unit
1208 * suffix; if missing, use the default value 'val'.
1210 unsigned long git_env_ulong(const char *k, unsigned long val)
1212 const char *v = getenv(k);
1213 if (v && !git_parse_ulong(v, &val))
1214 die("failed to parse %s", k);
1218 int git_config_system(void)
1220 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1223 int git_config_early(config_fn_t fn, void *data, const char *repo_config)
1225 int ret = 0, found = 0;
1226 char *xdg_config = xdg_config_home("config");
1227 char *user_config = expand_user_path("~/.gitconfig");
1229 ret += fn("alias.ci", "commit", data);
1230 ret += fn("alias.co", "checkout", data);
1231 ret += fn("alias.rb", "rebase", data);
1232 ret += fn("alias.st", "status", data);
1233 ret += fn("alias.br", "branch", data);
1234 ret += fn("alias.pi", "cherry-pick", data);
1235 ret += fn("alias.mt", "mergetool", data);
1237 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0)) {
1238 ret += git_config_from_file(fn, git_etc_gitconfig(),
1243 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK)) {
1244 ret += git_config_from_file(fn, xdg_config, data);
1248 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) {
1249 ret += git_config_from_file(fn, user_config, data);
1253 if (repo_config && !access_or_die(repo_config, R_OK, 0)) {
1254 ret += git_config_from_file(fn, repo_config, data);
1258 switch (git_config_from_parameters(fn, data)) {
1259 case -1: /* error */
1260 die(_("unable to parse command-line config"));
1262 case 0: /* found nothing */
1264 default: /* found at least one item */
1271 return ret == 0 ? found : ret;
1274 int git_config_with_options(config_fn_t fn, void *data,
1275 struct git_config_source *config_source,
1276 int respect_includes)
1278 char *repo_config = NULL;
1280 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1282 if (respect_includes) {
1285 fn = git_config_include;
1290 * If we have a specific filename, use it. Otherwise, follow the
1291 * regular lookup sequence.
1293 if (config_source && config_source->use_stdin)
1294 return git_config_from_stdin(fn, data);
1295 else if (config_source && config_source->file)
1296 return git_config_from_file(fn, config_source->file, data);
1297 else if (config_source && config_source->blob)
1298 return git_config_from_blob_ref(fn, config_source->blob, data);
1300 repo_config = git_pathdup("config");
1301 ret = git_config_early(fn, data, repo_config);
1307 static void git_config_raw(config_fn_t fn, void *data)
1309 if (git_config_with_options(fn, data, NULL, 1) < 0)
1311 * git_config_with_options() normally returns only
1312 * positive values, as most errors are fatal, and
1313 * non-fatal potential errors are guarded by "if"
1314 * statements that are entered only when no error is
1317 * If we ever encounter a non-fatal error, it means
1318 * something went really wrong and we should stop
1321 die(_("unknown error occured while reading the configuration files"));
1324 static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
1327 struct string_list *values;
1328 struct config_set_element *entry;
1329 struct configset_list *list = &cs->list;
1330 struct key_value_info *kv_info;
1332 for (i = 0; i < list->nr; i++) {
1333 entry = list->items[i].e;
1334 value_index = list->items[i].value_index;
1335 values = &entry->value_list;
1336 if (fn(entry->key, values->items[value_index].string, data) < 0) {
1337 kv_info = values->items[value_index].util;
1338 git_die_config_linenr(entry->key, kv_info->filename, kv_info->linenr);
1343 static void git_config_check_init(void);
1345 void git_config(config_fn_t fn, void *data)
1347 git_config_check_init();
1348 configset_iter(&the_config_set, fn, data);
1351 static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1353 struct config_set_element k;
1354 struct config_set_element *found_entry;
1355 char *normalized_key;
1358 * `key` may come from the user, so normalize it before using it
1359 * for querying entries from the hashmap.
1361 ret = git_config_parse_key(key, &normalized_key, NULL);
1366 hashmap_entry_init(&k, strhash(normalized_key));
1367 k.key = normalized_key;
1368 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1369 free(normalized_key);
1373 static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1375 struct config_set_element *e;
1376 struct string_list_item *si;
1377 struct configset_list_item *l_item;
1378 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1380 e = configset_find_element(cs, key);
1382 * Since the keys are being fed by git_config*() callback mechanism, they
1383 * are already normalized. So simply add them without any further munging.
1386 e = xmalloc(sizeof(*e));
1387 hashmap_entry_init(e, strhash(key));
1388 e->key = xstrdup(key);
1389 string_list_init(&e->value_list, 1);
1390 hashmap_add(&cs->config_hash, e);
1392 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
1394 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1395 l_item = &cs->list.items[cs->list.nr++];
1397 l_item->value_index = e->value_list.nr - 1;
1400 kv_info->filename = strintern(cf->name);
1401 kv_info->linenr = cf->linenr;
1403 /* for values read from `git_config_from_parameters()` */
1404 kv_info->filename = NULL;
1405 kv_info->linenr = -1;
1412 static int config_set_element_cmp(const struct config_set_element *e1,
1413 const struct config_set_element *e2, const void *unused)
1415 return strcmp(e1->key, e2->key);
1418 void git_configset_init(struct config_set *cs)
1420 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1421 cs->hash_initialized = 1;
1424 cs->list.items = NULL;
1427 void git_configset_clear(struct config_set *cs)
1429 struct config_set_element *entry;
1430 struct hashmap_iter iter;
1431 if (!cs->hash_initialized)
1434 hashmap_iter_init(&cs->config_hash, &iter);
1435 while ((entry = hashmap_iter_next(&iter))) {
1437 string_list_clear(&entry->value_list, 1);
1439 hashmap_free(&cs->config_hash, 1);
1440 cs->hash_initialized = 0;
1441 free(cs->list.items);
1444 cs->list.items = NULL;
1447 static int config_set_callback(const char *key, const char *value, void *cb)
1449 struct config_set *cs = cb;
1450 configset_add_value(cs, key, value);
1454 int git_configset_add_file(struct config_set *cs, const char *filename)
1456 return git_config_from_file(config_set_callback, filename, cs);
1459 int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1461 const struct string_list *values = NULL;
1463 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1464 * queried key in the files of the configset, the value returned will be the last
1465 * value in the value list for that key.
1467 values = git_configset_get_value_multi(cs, key);
1471 assert(values->nr > 0);
1472 *value = values->items[values->nr - 1].string;
1476 const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1478 struct config_set_element *e = configset_find_element(cs, key);
1479 return e ? &e->value_list : NULL;
1482 int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1485 if (!git_configset_get_value(cs, key, &value))
1486 return git_config_string(dest, key, value);
1491 int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1493 return git_configset_get_string_const(cs, key, (const char **)dest);
1496 int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1499 if (!git_configset_get_value(cs, key, &value)) {
1500 *dest = git_config_int(key, value);
1506 int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1509 if (!git_configset_get_value(cs, key, &value)) {
1510 *dest = git_config_ulong(key, value);
1516 int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1519 if (!git_configset_get_value(cs, key, &value)) {
1520 *dest = git_config_bool(key, value);
1526 int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1527 int *is_bool, int *dest)
1530 if (!git_configset_get_value(cs, key, &value)) {
1531 *dest = git_config_bool_or_int(key, value, is_bool);
1537 int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1540 if (!git_configset_get_value(cs, key, &value)) {
1541 *dest = git_config_maybe_bool(key, value);
1549 int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1552 if (!git_configset_get_value(cs, key, &value))
1553 return git_config_pathname(dest, key, value);
1558 static void git_config_check_init(void)
1560 if (the_config_set.hash_initialized)
1562 git_configset_init(&the_config_set);
1563 git_config_raw(config_set_callback, &the_config_set);
1566 void git_config_clear(void)
1568 if (!the_config_set.hash_initialized)
1570 git_configset_clear(&the_config_set);
1573 int git_config_get_value(const char *key, const char **value)
1575 git_config_check_init();
1576 return git_configset_get_value(&the_config_set, key, value);
1579 const struct string_list *git_config_get_value_multi(const char *key)
1581 git_config_check_init();
1582 return git_configset_get_value_multi(&the_config_set, key);
1585 int git_config_get_string_const(const char *key, const char **dest)
1588 git_config_check_init();
1589 ret = git_configset_get_string_const(&the_config_set, key, dest);
1591 git_die_config(key, NULL);
1595 int git_config_get_string(const char *key, char **dest)
1597 git_config_check_init();
1598 return git_config_get_string_const(key, (const char **)dest);
1601 int git_config_get_int(const char *key, int *dest)
1603 git_config_check_init();
1604 return git_configset_get_int(&the_config_set, key, dest);
1607 int git_config_get_ulong(const char *key, unsigned long *dest)
1609 git_config_check_init();
1610 return git_configset_get_ulong(&the_config_set, key, dest);
1613 int git_config_get_bool(const char *key, int *dest)
1615 git_config_check_init();
1616 return git_configset_get_bool(&the_config_set, key, dest);
1619 int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1621 git_config_check_init();
1622 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1625 int git_config_get_maybe_bool(const char *key, int *dest)
1627 git_config_check_init();
1628 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1631 int git_config_get_pathname(const char *key, const char **dest)
1634 git_config_check_init();
1635 ret = git_configset_get_pathname(&the_config_set, key, dest);
1637 git_die_config(key, NULL);
1642 void git_die_config_linenr(const char *key, const char *filename, int linenr)
1645 die(_("unable to parse '%s' from command-line config"), key);
1647 die(_("bad config variable '%s' in file '%s' at line %d"),
1648 key, filename, linenr);
1651 NORETURN __attribute__((format(printf, 2, 3)))
1652 void git_die_config(const char *key, const char *err, ...)
1654 const struct string_list *values;
1655 struct key_value_info *kv_info;
1659 va_start(params, err);
1660 vreportf("error: ", err, params);
1663 values = git_config_get_value_multi(key);
1664 kv_info = values->items[values->nr - 1].util;
1665 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
1669 * Find all the stuff for git_config_set() below.
1676 regex_t *value_regex;
1679 unsigned int offset_alloc;
1680 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
1684 static int matches(const char *key, const char *value)
1686 if (strcmp(key, store.key))
1687 return 0; /* not ours */
1688 if (!store.value_regex)
1689 return 1; /* always matches */
1690 if (store.value_regex == CONFIG_REGEX_NONE)
1691 return 0; /* never matches */
1693 return store.do_not_match ^
1694 (value && !regexec(store.value_regex, value, 0, NULL, 0));
1697 static int store_aux(const char *key, const char *value, void *cb)
1702 switch (store.state) {
1704 if (matches(key, value)) {
1705 if (store.seen == 1 && store.multi_replace == 0) {
1706 warning(_("%s has multiple values"), key);
1709 ALLOC_GROW(store.offset, store.seen + 1,
1710 store.offset_alloc);
1712 store.offset[store.seen] = cf->do_ftell(cf);
1718 * What we are looking for is in store.key (both
1719 * section and var), and its section part is baselen
1720 * long. We found key (again, both section and var).
1721 * We would want to know if this key is in the same
1722 * section as what we are looking for. We already
1723 * know we are in the same section as what should
1726 ep = strrchr(key, '.');
1727 section_len = ep - key;
1729 if ((section_len != store.baselen) ||
1730 memcmp(key, store.key, section_len+1)) {
1731 store.state = SECTION_END_SEEN;
1736 * Do not increment matches: this is no match, but we
1737 * just made sure we are in the desired section.
1739 ALLOC_GROW(store.offset, store.seen + 1,
1740 store.offset_alloc);
1741 store.offset[store.seen] = cf->do_ftell(cf);
1743 case SECTION_END_SEEN:
1745 if (matches(key, value)) {
1746 ALLOC_GROW(store.offset, store.seen + 1,
1747 store.offset_alloc);
1748 store.offset[store.seen] = cf->do_ftell(cf);
1749 store.state = KEY_SEEN;
1752 if (strrchr(key, '.') - key == store.baselen &&
1753 !strncmp(key, store.key, store.baselen)) {
1754 store.state = SECTION_SEEN;
1755 ALLOC_GROW(store.offset,
1757 store.offset_alloc);
1758 store.offset[store.seen] = cf->do_ftell(cf);
1765 static int write_error(const char *filename)
1767 error("failed to write new configuration file %s", filename);
1769 /* Same error code as "failed to rename". */
1773 static int store_write_section(int fd, const char *key)
1777 struct strbuf sb = STRBUF_INIT;
1779 dot = memchr(key, '.', store.baselen);
1781 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1782 for (i = dot - key + 1; i < store.baselen; i++) {
1783 if (key[i] == '"' || key[i] == '\\')
1784 strbuf_addch(&sb, '\\');
1785 strbuf_addch(&sb, key[i]);
1787 strbuf_addstr(&sb, "\"]\n");
1789 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1792 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1793 strbuf_release(&sb);
1798 static int store_write_pair(int fd, const char *key, const char *value)
1801 int length = strlen(key + store.baselen + 1);
1802 const char *quote = "";
1803 struct strbuf sb = STRBUF_INIT;
1806 * Check to see if the value needs to be surrounded with a dq pair.
1807 * Note that problematic characters are always backslash-quoted; this
1808 * check is about not losing leading or trailing SP and strings that
1809 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1810 * configuration parser.
1812 if (value[0] == ' ')
1814 for (i = 0; value[i]; i++)
1815 if (value[i] == ';' || value[i] == '#')
1817 if (i && value[i - 1] == ' ')
1820 strbuf_addf(&sb, "\t%.*s = %s",
1821 length, key + store.baselen + 1, quote);
1823 for (i = 0; value[i]; i++)
1826 strbuf_addstr(&sb, "\\n");
1829 strbuf_addstr(&sb, "\\t");
1833 strbuf_addch(&sb, '\\');
1835 strbuf_addch(&sb, value[i]);
1838 strbuf_addf(&sb, "%s\n", quote);
1840 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1841 strbuf_release(&sb);
1846 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1847 size_t offset_, int *found_bracket)
1849 size_t equal_offset = size, bracket_offset = size;
1853 for (offset = offset_-2; offset > 0
1854 && contents[offset] != '\n'; offset--)
1855 switch (contents[offset]) {
1856 case '=': equal_offset = offset; break;
1857 case ']': bracket_offset = offset; break;
1859 if (offset > 0 && contents[offset-1] == '\\') {
1863 if (bracket_offset < equal_offset) {
1865 offset = bracket_offset+1;
1872 int git_config_set_in_file(const char *config_filename,
1873 const char *key, const char *value)
1875 return git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
1878 int git_config_set(const char *key, const char *value)
1880 return git_config_set_multivar(key, value, NULL, 0);
1884 * Auxiliary function to sanity-check and split the key into the section
1885 * identifier and variable name.
1887 * Returns 0 on success, -1 when there is an invalid character in the key and
1888 * -2 if there is no section name in the key.
1890 * store_key - pointer to char* which will hold a copy of the key with
1891 * lowercase section and variable name
1892 * baselen - pointer to int which will hold the length of the
1893 * section + subsection part, can be NULL
1895 static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
1897 int i, dot, baselen;
1898 const char *last_dot = strrchr(key, '.');
1901 * Since "key" actually contains the section name and the real
1902 * key name separated by a dot, we have to know where the dot is.
1905 if (last_dot == NULL || last_dot == key) {
1907 error("key does not contain a section: %s", key);
1908 return -CONFIG_NO_SECTION_OR_NAME;
1913 error("key does not contain variable name: %s", key);
1914 return -CONFIG_NO_SECTION_OR_NAME;
1917 baselen = last_dot - key;
1919 *baselen_ = baselen;
1922 * Validate the key and while at it, lower case it for matching.
1925 *store_key = xmalloc(strlen(key) + 1);
1928 for (i = 0; key[i]; i++) {
1929 unsigned char c = key[i];
1932 /* Leave the extended basename untouched.. */
1933 if (!dot || i > baselen) {
1934 if (!iskeychar(c) ||
1935 (i == baselen + 1 && !isalpha(c))) {
1937 error("invalid key: %s", key);
1938 goto out_free_ret_1;
1941 } else if (c == '\n') {
1943 error("invalid key (newline): %s", key);
1944 goto out_free_ret_1;
1947 (*store_key)[i] = c;
1950 (*store_key)[i] = 0;
1959 return -CONFIG_INVALID_KEY;
1962 int git_config_parse_key(const char *key, char **store_key, int *baselen)
1964 return git_config_parse_key_1(key, store_key, baselen, 0);
1967 int git_config_key_is_valid(const char *key)
1969 return !git_config_parse_key_1(key, NULL, NULL, 1);
1973 * If value==NULL, unset in (remove from) config,
1974 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1975 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
1976 * (only add a new one)
1977 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1978 * else all matching key/values (regardless how many) are removed,
1979 * before the new pair is written.
1981 * Returns 0 on success.
1983 * This function does this:
1985 * - it locks the config file by creating ".git/config.lock"
1987 * - it then parses the config using store_aux() as validator to find
1988 * the position on the key/value pair to replace. If it is to be unset,
1989 * it must be found exactly once.
1991 * - the config file is mmap()ed and the part before the match (if any) is
1992 * written to the lock file, then the changed part and the rest.
1994 * - the config file is removed and the lock file rename()d to it.
1997 int git_config_set_multivar_in_file(const char *config_filename,
1998 const char *key, const char *value,
1999 const char *value_regex, int multi_replace)
2001 int fd = -1, in_fd = -1;
2003 struct lock_file *lock = NULL;
2004 char *filename_buf = NULL;
2005 char *contents = NULL;
2008 /* parse-key returns negative; flip the sign to feed exit(3) */
2009 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2013 store.multi_replace = multi_replace;
2015 if (!config_filename)
2016 config_filename = filename_buf = git_pathdup("config");
2019 * The lock serves a purpose in addition to locking: the new
2020 * contents of .git/config will be written into it.
2022 lock = xcalloc(1, sizeof(struct lock_file));
2023 fd = hold_lock_file_for_update(lock, config_filename, 0);
2025 error("could not lock config file %s: %s", config_filename, strerror(errno));
2027 ret = CONFIG_NO_LOCK;
2032 * If .git/config does not exist yet, write a minimal version.
2034 in_fd = open(config_filename, O_RDONLY);
2038 if ( ENOENT != errno ) {
2039 error("opening %s: %s", config_filename,
2041 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
2044 /* if nothing to unset, error out */
2045 if (value == NULL) {
2046 ret = CONFIG_NOTHING_SET;
2050 store.key = (char *)key;
2051 if (!store_write_section(fd, key) ||
2052 !store_write_pair(fd, key, value))
2056 size_t copy_begin, copy_end;
2057 int i, new_line = 0;
2059 if (value_regex == NULL)
2060 store.value_regex = NULL;
2061 else if (value_regex == CONFIG_REGEX_NONE)
2062 store.value_regex = CONFIG_REGEX_NONE;
2064 if (value_regex[0] == '!') {
2065 store.do_not_match = 1;
2068 store.do_not_match = 0;
2070 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
2071 if (regcomp(store.value_regex, value_regex,
2073 error("invalid pattern: %s", value_regex);
2074 free(store.value_regex);
2075 ret = CONFIG_INVALID_PATTERN;
2080 ALLOC_GROW(store.offset, 1, store.offset_alloc);
2081 store.offset[0] = 0;
2082 store.state = START;
2086 * After this, store.offset will contain the *end* offset
2087 * of the last match, or remain at 0 if no match was found.
2088 * As a side effect, we make sure to transform only a valid
2089 * existing config file.
2091 if (git_config_from_file(store_aux, config_filename, NULL)) {
2092 error("invalid config file %s", config_filename);
2094 if (store.value_regex != NULL &&
2095 store.value_regex != CONFIG_REGEX_NONE) {
2096 regfree(store.value_regex);
2097 free(store.value_regex);
2099 ret = CONFIG_INVALID_FILE;
2104 if (store.value_regex != NULL &&
2105 store.value_regex != CONFIG_REGEX_NONE) {
2106 regfree(store.value_regex);
2107 free(store.value_regex);
2110 /* if nothing to unset, or too many matches, error out */
2111 if ((store.seen == 0 && value == NULL) ||
2112 (store.seen > 1 && multi_replace == 0)) {
2113 ret = CONFIG_NOTHING_SET;
2118 contents_sz = xsize_t(st.st_size);
2119 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2120 MAP_PRIVATE, in_fd, 0);
2121 if (contents == MAP_FAILED) {
2122 if (errno == ENODEV && S_ISDIR(st.st_mode))
2124 error("unable to mmap '%s': %s",
2125 config_filename, strerror(errno));
2126 ret = CONFIG_INVALID_FILE;
2133 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2134 error("chmod on %s failed: %s",
2135 get_lock_file_path(lock), strerror(errno));
2136 ret = CONFIG_NO_WRITE;
2140 if (store.seen == 0)
2143 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2144 if (store.offset[i] == 0) {
2145 store.offset[i] = copy_end = contents_sz;
2146 } else if (store.state != KEY_SEEN) {
2147 copy_end = store.offset[i];
2149 copy_end = find_beginning_of_line(
2150 contents, contents_sz,
2151 store.offset[i]-2, &new_line);
2153 if (copy_end > 0 && contents[copy_end-1] != '\n')
2156 /* write the first part of the config */
2157 if (copy_end > copy_begin) {
2158 if (write_in_full(fd, contents + copy_begin,
2159 copy_end - copy_begin) <
2160 copy_end - copy_begin)
2163 write_str_in_full(fd, "\n") != 1)
2166 copy_begin = store.offset[i];
2169 /* write the pair (value == NULL means unset) */
2170 if (value != NULL) {
2171 if (store.state == START) {
2172 if (!store_write_section(fd, key))
2175 if (!store_write_pair(fd, key, value))
2179 /* write the rest of the config */
2180 if (copy_begin < contents_sz)
2181 if (write_in_full(fd, contents + copy_begin,
2182 contents_sz - copy_begin) <
2183 contents_sz - copy_begin)
2186 munmap(contents, contents_sz);
2190 if (commit_lock_file(lock) < 0) {
2191 error("could not commit config file %s", config_filename);
2192 ret = CONFIG_NO_WRITE;
2198 * lock is committed, so don't try to roll it back below.
2199 * NOTE: Since lockfile.c keeps a linked list of all created
2200 * lock_file structures, it isn't safe to free(lock). It's
2201 * better to just leave it hanging around.
2206 /* Invalidate the config cache */
2211 rollback_lock_file(lock);
2214 munmap(contents, contents_sz);
2220 ret = write_error(get_lock_file_path(lock));
2225 int git_config_set_multivar(const char *key, const char *value,
2226 const char *value_regex, int multi_replace)
2228 return git_config_set_multivar_in_file(NULL, key, value, value_regex,
2232 static int section_name_match (const char *buf, const char *name)
2234 int i = 0, j = 0, dot = 0;
2237 for (i = 1; buf[i] && buf[i] != ']'; i++) {
2238 if (!dot && isspace(buf[i])) {
2240 if (name[j++] != '.')
2242 for (i++; isspace(buf[i]); i++)
2248 if (buf[i] == '\\' && dot)
2250 else if (buf[i] == '"' && dot) {
2251 for (i++; isspace(buf[i]); i++)
2255 if (buf[i] != name[j++])
2258 if (buf[i] == ']' && name[j] == 0) {
2260 * We match, now just find the right length offset by
2261 * gobbling up any whitespace after it, as well
2264 for (; buf[i] && isspace(buf[i]); i++)
2271 static int section_name_is_ok(const char *name)
2273 /* Empty section names are bogus. */
2278 * Before a dot, we must be alphanumeric or dash. After the first dot,
2279 * anything goes, so we can stop checking.
2281 for (; *name && *name != '.'; name++)
2282 if (*name != '-' && !isalnum(*name))
2287 /* if new_name == NULL, the section is removed instead */
2288 int git_config_rename_section_in_file(const char *config_filename,
2289 const char *old_name, const char *new_name)
2291 int ret = 0, remove = 0;
2292 char *filename_buf = NULL;
2293 struct lock_file *lock;
2299 if (new_name && !section_name_is_ok(new_name)) {
2300 ret = error("invalid section name: %s", new_name);
2304 if (!config_filename)
2305 config_filename = filename_buf = git_pathdup("config");
2307 lock = xcalloc(1, sizeof(struct lock_file));
2308 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
2310 ret = error("could not lock config file %s", config_filename);
2314 if (!(config_file = fopen(config_filename, "rb"))) {
2315 /* no config file means nothing to rename, no error */
2316 goto unlock_and_out;
2319 fstat(fileno(config_file), &st);
2321 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2322 ret = error("chmod on %s failed: %s",
2323 get_lock_file_path(lock), strerror(errno));
2327 while (fgets(buf, sizeof(buf), config_file)) {
2331 for (i = 0; buf[i] && isspace(buf[i]); i++)
2333 if (buf[i] == '[') {
2334 /* it's a section */
2335 int offset = section_name_match(&buf[i], old_name);
2338 if (new_name == NULL) {
2342 store.baselen = strlen(new_name);
2343 if (!store_write_section(out_fd, new_name)) {
2344 ret = write_error(get_lock_file_path(lock));
2348 * We wrote out the new section, with
2349 * a newline, now skip the old
2352 output += offset + i;
2353 if (strlen(output) > 0) {
2355 * More content means there's
2356 * a declaration to put on the
2357 * next line; indent with a
2368 length = strlen(output);
2369 if (write_in_full(out_fd, output, length) != length) {
2370 ret = write_error(get_lock_file_path(lock));
2374 fclose(config_file);
2376 if (commit_lock_file(lock) < 0)
2377 ret = error("could not commit config file %s", config_filename);
2383 int git_config_rename_section(const char *old_name, const char *new_name)
2385 return git_config_rename_section_in_file(NULL, old_name, new_name);
2389 * Call this to report error for your variable that should not
2390 * get a boolean value (i.e. "[my] var" means "true").
2392 int config_error_nonbool(const char *var)
2394 return error("Missing value for '%s'", var);
2397 int parse_config_key(const char *var,
2398 const char *section,
2399 const char **subsection, int *subsection_len,
2402 int section_len = strlen(section);
2405 /* Does it start with "section." ? */
2406 if (!starts_with(var, section) || var[section_len] != '.')
2410 * Find the key; we don't know yet if we have a subsection, but we must
2411 * parse backwards from the end, since the subsection may have dots in
2414 dot = strrchr(var, '.');
2417 /* Did we have a subsection at all? */
2418 if (dot == var + section_len) {
2420 *subsection_len = 0;
2423 *subsection = var + section_len + 1;
2424 *subsection_len = dot - *subsection;