2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
13 struct config_source {
14 struct config_source *prev;
31 int (*do_fgetc)(struct config_source *c);
32 int (*do_ungetc)(int c, struct config_source *conf);
33 long (*do_ftell)(struct config_source *c);
36 static struct config_source *cf;
38 static int zlib_compression_seen;
40 static int config_file_fgetc(struct config_source *conf)
42 return fgetc(conf->u.file);
45 static int config_file_ungetc(int c, struct config_source *conf)
47 return ungetc(c, conf->u.file);
50 static long config_file_ftell(struct config_source *conf)
52 return ftell(conf->u.file);
56 static int config_buf_fgetc(struct config_source *conf)
58 if (conf->u.buf.pos < conf->u.buf.len)
59 return conf->u.buf.buf[conf->u.buf.pos++];
64 static int config_buf_ungetc(int c, struct config_source *conf)
66 if (conf->u.buf.pos > 0)
67 return conf->u.buf.buf[--conf->u.buf.pos];
72 static long config_buf_ftell(struct config_source *conf)
74 return conf->u.buf.pos;
77 #define MAX_INCLUDE_DEPTH 10
78 static const char include_depth_advice[] =
79 "exceeded maximum include depth (%d) while including\n"
83 "Do you have circular includes?";
84 static int handle_path_include(const char *path, struct config_include_data *inc)
87 struct strbuf buf = STRBUF_INIT;
91 return config_error_nonbool("include.path");
93 expanded = expand_user_path(path);
95 return error("Could not expand include path '%s'", path);
99 * Use an absolute path as-is, but interpret relative paths
100 * based on the including config file.
102 if (!is_absolute_path(path)) {
105 if (!cf || !cf->path)
106 return error("relative config includes must come from files");
108 slash = find_last_dir_sep(cf->path);
110 strbuf_add(&buf, cf->path, slash - cf->path + 1);
111 strbuf_addstr(&buf, path);
115 if (!access_or_die(path, R_OK, 0)) {
116 if (++inc->depth > MAX_INCLUDE_DEPTH)
117 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
118 cf && cf->name ? cf->name : "the command line");
119 ret = git_config_from_file(git_config_include, path, inc);
122 strbuf_release(&buf);
127 int git_config_include(const char *var, const char *value, void *data)
129 struct config_include_data *inc = data;
134 * Pass along all values, including "include" directives; this makes it
135 * possible to query information on the includes themselves.
137 ret = inc->fn(var, value, inc->data);
141 type = skip_prefix(var, "include.");
145 if (!strcmp(type, "path"))
146 ret = handle_path_include(value, inc);
150 static void lowercase(char *p)
156 void git_config_push_parameter(const char *text)
158 struct strbuf env = STRBUF_INIT;
159 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
161 strbuf_addstr(&env, old);
162 strbuf_addch(&env, ' ');
164 sq_quote_buf(&env, text);
165 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
166 strbuf_release(&env);
169 int git_config_parse_parameter(const char *text,
170 config_fn_t fn, void *data)
172 struct strbuf **pair;
173 pair = strbuf_split_str(text, '=', 2);
175 return error("bogus config parameter: %s", text);
176 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=')
177 strbuf_setlen(pair[0], pair[0]->len - 1);
178 strbuf_trim(pair[0]);
180 strbuf_list_free(pair);
181 return error("bogus config parameter: %s", text);
183 lowercase(pair[0]->buf);
184 if (fn(pair[0]->buf, pair[1] ? pair[1]->buf : NULL, data) < 0) {
185 strbuf_list_free(pair);
188 strbuf_list_free(pair);
192 int git_config_from_parameters(config_fn_t fn, void *data)
194 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
196 const char **argv = NULL;
197 int nr = 0, alloc = 0;
202 /* sq_dequote will write over it */
205 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
207 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
210 for (i = 0; i < nr; i++) {
211 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
223 static int get_next_char(void)
225 int c = cf->do_fgetc(cf);
228 /* DOS like systems */
229 c = cf->do_fgetc(cf);
232 cf->do_ungetc(c, cf);
245 static char *parse_value(void)
247 int quote = 0, comment = 0, space = 0;
249 strbuf_reset(&cf->value);
251 int c = get_next_char();
257 return cf->value.buf;
261 if (isspace(c) && !quote) {
267 if (c == ';' || c == '#') {
272 for (; space; space--)
273 strbuf_addch(&cf->value, ' ');
288 /* Some characters escape as themselves */
291 /* Reject unknown escape sequences */
295 strbuf_addch(&cf->value, c);
302 strbuf_addch(&cf->value, c);
306 static inline int iskeychar(int c)
308 return isalnum(c) || c == '-';
311 static int get_value(config_fn_t fn, void *data, struct strbuf *name)
316 /* Get the full name */
323 strbuf_addch(name, tolower(c));
326 while (c == ' ' || c == '\t')
333 value = parse_value();
337 return fn(name->buf, value, data);
340 static int get_extended_base_var(struct strbuf *name, int c)
344 goto error_incomplete_line;
346 } while (isspace(c));
348 /* We require the format to be '[base "extension"]' */
351 strbuf_addch(name, '.');
354 int c = get_next_char();
356 goto error_incomplete_line;
362 goto error_incomplete_line;
364 strbuf_addch(name, c);
368 if (get_next_char() != ']')
371 error_incomplete_line:
376 static int get_base_var(struct strbuf *name)
379 int c = get_next_char();
385 return get_extended_base_var(name, c);
386 if (!iskeychar(c) && c != '.')
388 strbuf_addch(name, tolower(c));
392 static int git_parse_source(config_fn_t fn, void *data)
396 struct strbuf *var = &cf->var;
398 /* U+FEFF Byte Order Mark in UTF8 */
399 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
400 const unsigned char *bomptr = utf8_bom;
403 int c = get_next_char();
404 if (bomptr && *bomptr) {
405 /* We are at the file beginning; skip UTF8-encoded BOM
406 * if present. Sane editors won't put this in on their
407 * own, but e.g. Windows Notepad will do it happily. */
408 if ((unsigned char) c == *bomptr) {
412 /* Do not tolerate partial BOM. */
413 if (bomptr != utf8_bom)
415 /* No BOM at file beginning. Cool. */
425 if (comment || isspace(c))
427 if (c == '#' || c == ';') {
432 /* Reset prior to determining a new stem */
434 if (get_base_var(var) < 0 || var->len < 1)
436 strbuf_addch(var, '.');
443 * Truncate the var name back to the section header
444 * stem prior to grabbing the suffix part of the name
447 strbuf_setlen(var, baselen);
448 strbuf_addch(var, tolower(c));
449 if (get_value(fn, data, var) < 0)
452 if (cf->die_on_error)
453 die("bad config file line %d in %s", cf->linenr, cf->name);
455 return error("bad config file line %d in %s", cf->linenr, cf->name);
458 static int parse_unit_factor(const char *end, uintmax_t *val)
462 else if (!strcasecmp(end, "k")) {
466 else if (!strcasecmp(end, "m")) {
470 else if (!strcasecmp(end, "g")) {
471 *val *= 1024 * 1024 * 1024;
477 static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
479 if (value && *value) {
483 uintmax_t factor = 1;
486 val = strtoimax(value, &end, 0);
489 if (!parse_unit_factor(end, &factor)) {
495 if (uval > max || abs(val) > uval) {
507 static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
509 if (value && *value) {
515 val = strtoumax(value, &end, 0);
519 if (!parse_unit_factor(end, &val)) {
523 if (val > max || oldval > val) {
534 static int git_parse_int(const char *value, int *ret)
537 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
543 static int git_parse_int64(const char *value, int64_t *ret)
546 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
552 int git_parse_ulong(const char *value, unsigned long *ret)
555 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
562 static void die_bad_number(const char *name, const char *value)
564 const char *reason = errno == ERANGE ?
571 die("bad numeric config value '%s' for '%s' in %s: %s",
572 value, name, cf->name, reason);
573 die("bad numeric config value '%s' for '%s': %s", value, name, reason);
576 int git_config_int(const char *name, const char *value)
579 if (!git_parse_int(value, &ret))
580 die_bad_number(name, value);
584 int64_t git_config_int64(const char *name, const char *value)
587 if (!git_parse_int64(value, &ret))
588 die_bad_number(name, value);
592 unsigned long git_config_ulong(const char *name, const char *value)
595 if (!git_parse_ulong(value, &ret))
596 die_bad_number(name, value);
600 static int git_config_maybe_bool_text(const char *name, const char *value)
606 if (!strcasecmp(value, "true")
607 || !strcasecmp(value, "yes")
608 || !strcasecmp(value, "on"))
610 if (!strcasecmp(value, "false")
611 || !strcasecmp(value, "no")
612 || !strcasecmp(value, "off"))
617 int git_config_maybe_bool(const char *name, const char *value)
619 int v = git_config_maybe_bool_text(name, value);
622 if (git_parse_int(value, &v))
627 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
629 int v = git_config_maybe_bool_text(name, value);
635 return git_config_int(name, value);
638 int git_config_bool(const char *name, const char *value)
641 return !!git_config_bool_or_int(name, value, &discard);
644 int git_config_string(const char **dest, const char *var, const char *value)
647 return config_error_nonbool(var);
648 *dest = xstrdup(value);
652 int git_config_pathname(const char **dest, const char *var, const char *value)
655 return config_error_nonbool(var);
656 *dest = expand_user_path(value);
658 die("Failed to expand user dir in: '%s'", value);
662 static int git_default_core_config(const char *var, const char *value)
664 /* This needs a better name */
665 if (!strcmp(var, "core.filemode")) {
666 trust_executable_bit = git_config_bool(var, value);
669 if (!strcmp(var, "core.trustctime")) {
670 trust_ctime = git_config_bool(var, value);
673 if (!strcmp(var, "core.checkstat")) {
674 if (!strcasecmp(value, "default"))
676 else if (!strcasecmp(value, "minimal"))
680 if (!strcmp(var, "core.quotepath")) {
681 quote_path_fully = git_config_bool(var, value);
685 if (!strcmp(var, "core.symlinks")) {
686 has_symlinks = git_config_bool(var, value);
690 if (!strcmp(var, "core.ignorecase")) {
691 ignore_case = git_config_bool(var, value);
695 if (!strcmp(var, "core.attributesfile"))
696 return git_config_pathname(&git_attributes_file, var, value);
698 if (!strcmp(var, "core.bare")) {
699 is_bare_repository_cfg = git_config_bool(var, value);
703 if (!strcmp(var, "core.ignorestat")) {
704 assume_unchanged = git_config_bool(var, value);
708 if (!strcmp(var, "core.prefersymlinkrefs")) {
709 prefer_symlink_refs = git_config_bool(var, value);
713 if (!strcmp(var, "core.logallrefupdates")) {
714 log_all_ref_updates = git_config_bool(var, value);
718 if (!strcmp(var, "core.warnambiguousrefs")) {
719 warn_ambiguous_refs = git_config_bool(var, value);
723 if (!strcmp(var, "core.abbrev")) {
724 int abbrev = git_config_int(var, value);
725 if (abbrev < minimum_abbrev || abbrev > 40)
727 default_abbrev = abbrev;
731 if (!strcmp(var, "core.loosecompression")) {
732 int level = git_config_int(var, value);
734 level = Z_DEFAULT_COMPRESSION;
735 else if (level < 0 || level > Z_BEST_COMPRESSION)
736 die("bad zlib compression level %d", level);
737 zlib_compression_level = level;
738 zlib_compression_seen = 1;
742 if (!strcmp(var, "core.compression")) {
743 int level = git_config_int(var, value);
745 level = Z_DEFAULT_COMPRESSION;
746 else if (level < 0 || level > Z_BEST_COMPRESSION)
747 die("bad zlib compression level %d", level);
748 core_compression_level = level;
749 core_compression_seen = 1;
750 if (!zlib_compression_seen)
751 zlib_compression_level = level;
755 if (!strcmp(var, "core.packedgitwindowsize")) {
756 int pgsz_x2 = getpagesize() * 2;
757 packed_git_window_size = git_config_ulong(var, value);
759 /* This value must be multiple of (pagesize * 2) */
760 packed_git_window_size /= pgsz_x2;
761 if (packed_git_window_size < 1)
762 packed_git_window_size = 1;
763 packed_git_window_size *= pgsz_x2;
767 if (!strcmp(var, "core.bigfilethreshold")) {
768 big_file_threshold = git_config_ulong(var, value);
772 if (!strcmp(var, "core.packedgitlimit")) {
773 packed_git_limit = git_config_ulong(var, value);
777 if (!strcmp(var, "core.deltabasecachelimit")) {
778 delta_base_cache_limit = git_config_ulong(var, value);
782 if (!strcmp(var, "core.autocrlf")) {
783 if (value && !strcasecmp(value, "input")) {
784 if (core_eol == EOL_CRLF)
785 return error("core.autocrlf=input conflicts with core.eol=crlf");
786 auto_crlf = AUTO_CRLF_INPUT;
789 auto_crlf = git_config_bool(var, value);
793 if (!strcmp(var, "core.safecrlf")) {
794 if (value && !strcasecmp(value, "warn")) {
795 safe_crlf = SAFE_CRLF_WARN;
798 safe_crlf = git_config_bool(var, value);
802 if (!strcmp(var, "core.eol")) {
803 if (value && !strcasecmp(value, "lf"))
805 else if (value && !strcasecmp(value, "crlf"))
807 else if (value && !strcasecmp(value, "native"))
808 core_eol = EOL_NATIVE;
810 core_eol = EOL_UNSET;
811 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
812 return error("core.autocrlf=input conflicts with core.eol=crlf");
816 if (!strcmp(var, "core.notesref")) {
817 notes_ref_name = xstrdup(value);
821 if (!strcmp(var, "core.pager"))
822 return git_config_string(&pager_program, var, value);
824 if (!strcmp(var, "core.editor"))
825 return git_config_string(&editor_program, var, value);
827 if (!strcmp(var, "core.commentchar")) {
829 int ret = git_config_string(&comment, var, value);
831 comment_line_char = comment[0];
835 if (!strcmp(var, "core.askpass"))
836 return git_config_string(&askpass_program, var, value);
838 if (!strcmp(var, "core.excludesfile"))
839 return git_config_pathname(&excludes_file, var, value);
841 if (!strcmp(var, "core.whitespace")) {
843 return config_error_nonbool(var);
844 whitespace_rule_cfg = parse_whitespace_rule(value);
848 if (!strcmp(var, "core.fsyncobjectfiles")) {
849 fsync_object_files = git_config_bool(var, value);
853 if (!strcmp(var, "core.preloadindex")) {
854 core_preload_index = git_config_bool(var, value);
858 if (!strcmp(var, "core.createobject")) {
859 if (!strcmp(value, "rename"))
860 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
861 else if (!strcmp(value, "link"))
862 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
864 die("Invalid mode for object creation: %s", value);
868 if (!strcmp(var, "core.sparsecheckout")) {
869 core_apply_sparse_checkout = git_config_bool(var, value);
873 if (!strcmp(var, "core.precomposeunicode")) {
874 precomposed_unicode = git_config_bool(var, value);
878 if (!strcmp(var, "core.protecthfs")) {
879 protect_hfs = git_config_bool(var, value);
883 if (!strcmp(var, "core.protectntfs")) {
884 protect_ntfs = git_config_bool(var, value);
888 /* Add other config variables here and to Documentation/config.txt. */
892 static int git_default_i18n_config(const char *var, const char *value)
894 if (!strcmp(var, "i18n.commitencoding"))
895 return git_config_string(&git_commit_encoding, var, value);
897 if (!strcmp(var, "i18n.logoutputencoding"))
898 return git_config_string(&git_log_output_encoding, var, value);
900 /* Add other config variables here and to Documentation/config.txt. */
904 static int git_default_branch_config(const char *var, const char *value)
906 if (!strcmp(var, "branch.autosetupmerge")) {
907 if (value && !strcasecmp(value, "always")) {
908 git_branch_track = BRANCH_TRACK_ALWAYS;
911 git_branch_track = git_config_bool(var, value);
914 if (!strcmp(var, "branch.autosetuprebase")) {
916 return config_error_nonbool(var);
917 else if (!strcmp(value, "never"))
918 autorebase = AUTOREBASE_NEVER;
919 else if (!strcmp(value, "local"))
920 autorebase = AUTOREBASE_LOCAL;
921 else if (!strcmp(value, "remote"))
922 autorebase = AUTOREBASE_REMOTE;
923 else if (!strcmp(value, "always"))
924 autorebase = AUTOREBASE_ALWAYS;
926 return error("Malformed value for %s", var);
930 /* Add other config variables here and to Documentation/config.txt. */
934 static int git_default_push_config(const char *var, const char *value)
936 if (!strcmp(var, "push.default")) {
938 return config_error_nonbool(var);
939 else if (!strcmp(value, "nothing"))
940 push_default = PUSH_DEFAULT_NOTHING;
941 else if (!strcmp(value, "matching"))
942 push_default = PUSH_DEFAULT_MATCHING;
943 else if (!strcmp(value, "simple"))
944 push_default = PUSH_DEFAULT_SIMPLE;
945 else if (!strcmp(value, "upstream"))
946 push_default = PUSH_DEFAULT_UPSTREAM;
947 else if (!strcmp(value, "tracking")) /* deprecated */
948 push_default = PUSH_DEFAULT_UPSTREAM;
949 else if (!strcmp(value, "current"))
950 push_default = PUSH_DEFAULT_CURRENT;
952 error("Malformed value for %s: %s", var, value);
953 return error("Must be one of nothing, matching, simple, "
954 "upstream or current.");
959 /* Add other config variables here and to Documentation/config.txt. */
963 static int git_default_mailmap_config(const char *var, const char *value)
965 if (!strcmp(var, "mailmap.file"))
966 return git_config_pathname(&git_mailmap_file, var, value);
967 if (!strcmp(var, "mailmap.blob"))
968 return git_config_string(&git_mailmap_blob, var, value);
970 /* Add other config variables here and to Documentation/config.txt. */
974 int git_default_config(const char *var, const char *value, void *dummy)
976 if (starts_with(var, "core."))
977 return git_default_core_config(var, value);
979 if (starts_with(var, "user."))
980 return git_ident_config(var, value, dummy);
982 if (starts_with(var, "i18n."))
983 return git_default_i18n_config(var, value);
985 if (starts_with(var, "branch."))
986 return git_default_branch_config(var, value);
988 if (starts_with(var, "push."))
989 return git_default_push_config(var, value);
991 if (starts_with(var, "mailmap."))
992 return git_default_mailmap_config(var, value);
994 if (starts_with(var, "advice."))
995 return git_default_advice_config(var, value);
997 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
998 pager_use_color = git_config_bool(var,value);
1002 if (!strcmp(var, "pack.packsizelimit")) {
1003 pack_size_limit_cfg = git_config_ulong(var, value);
1006 /* Add other config variables here and to Documentation/config.txt. */
1011 * All source specific fields in the union, die_on_error, name and the callbacks
1012 * fgetc, ungetc, ftell of top need to be initialized before calling
1015 static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
1019 /* push config-file parsing state stack */
1023 strbuf_init(&top->value, 1024);
1024 strbuf_init(&top->var, 1024);
1027 ret = git_parse_source(fn, data);
1029 /* pop config-file parsing state stack */
1030 strbuf_release(&top->value);
1031 strbuf_release(&top->var);
1037 static int do_config_from_file(config_fn_t fn,
1038 const char *name, const char *path, FILE *f, void *data)
1040 struct config_source top;
1045 top.die_on_error = 1;
1046 top.do_fgetc = config_file_fgetc;
1047 top.do_ungetc = config_file_ungetc;
1048 top.do_ftell = config_file_ftell;
1050 return do_config_from(&top, fn, data);
1053 static int git_config_from_stdin(config_fn_t fn, void *data)
1055 return do_config_from_file(fn, "<stdin>", NULL, stdin, data);
1058 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1063 f = fopen(filename, "r");
1065 ret = do_config_from_file(fn, filename, filename, f, data);
1071 int git_config_from_buf(config_fn_t fn, const char *name, const char *buf,
1072 size_t len, void *data)
1074 struct config_source top;
1076 top.u.buf.buf = buf;
1077 top.u.buf.len = len;
1081 top.die_on_error = 0;
1082 top.do_fgetc = config_buf_fgetc;
1083 top.do_ungetc = config_buf_ungetc;
1084 top.do_ftell = config_buf_ftell;
1086 return do_config_from(&top, fn, data);
1089 static int git_config_from_blob_sha1(config_fn_t fn,
1091 const unsigned char *sha1,
1094 enum object_type type;
1099 buf = read_sha1_file(sha1, &type, &size);
1101 return error("unable to load config blob object '%s'", name);
1102 if (type != OBJ_BLOB) {
1104 return error("reference '%s' does not point to a blob", name);
1107 ret = git_config_from_buf(fn, name, buf, size, data);
1113 static int git_config_from_blob_ref(config_fn_t fn,
1117 unsigned char sha1[20];
1119 if (get_sha1(name, sha1) < 0)
1120 return error("unable to resolve config blob '%s'", name);
1121 return git_config_from_blob_sha1(fn, name, sha1, data);
1124 const char *git_etc_gitconfig(void)
1126 static const char *system_wide;
1128 system_wide = system_path(ETC_GITCONFIG);
1132 int git_env_bool(const char *k, int def)
1134 const char *v = getenv(k);
1135 return v ? git_config_bool(k, v) : def;
1138 int git_config_system(void)
1140 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1143 int git_config_early(config_fn_t fn, void *data, const char *repo_config)
1145 int ret = 0, found = 0;
1146 char *xdg_config = NULL;
1147 char *user_config = NULL;
1149 home_config_paths(&user_config, &xdg_config, "config");
1151 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0)) {
1152 ret += git_config_from_file(fn, git_etc_gitconfig(),
1157 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK)) {
1158 ret += git_config_from_file(fn, xdg_config, data);
1162 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) {
1163 ret += git_config_from_file(fn, user_config, data);
1167 if (repo_config && !access_or_die(repo_config, R_OK, 0)) {
1168 ret += git_config_from_file(fn, repo_config, data);
1172 switch (git_config_from_parameters(fn, data)) {
1173 case -1: /* error */
1174 die("unable to parse command-line config");
1176 case 0: /* found nothing */
1178 default: /* found at least one item */
1185 return ret == 0 ? found : ret;
1188 int git_config_with_options(config_fn_t fn, void *data,
1189 struct git_config_source *config_source,
1190 int respect_includes)
1192 char *repo_config = NULL;
1194 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1196 if (respect_includes) {
1199 fn = git_config_include;
1204 * If we have a specific filename, use it. Otherwise, follow the
1205 * regular lookup sequence.
1207 if (config_source && config_source->use_stdin)
1208 return git_config_from_stdin(fn, data);
1209 else if (config_source && config_source->file)
1210 return git_config_from_file(fn, config_source->file, data);
1211 else if (config_source && config_source->blob)
1212 return git_config_from_blob_ref(fn, config_source->blob, data);
1214 repo_config = git_pathdup("config");
1215 ret = git_config_early(fn, data, repo_config);
1221 int git_config(config_fn_t fn, void *data)
1223 return git_config_with_options(fn, data, NULL, 1);
1227 * Find all the stuff for git_config_set() below.
1234 regex_t *value_regex;
1237 unsigned int offset_alloc;
1238 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
1242 static int matches(const char *key, const char *value)
1244 return !strcmp(key, store.key) &&
1245 (store.value_regex == NULL ||
1246 (store.do_not_match ^
1247 !regexec(store.value_regex, value, 0, NULL, 0)));
1250 static int store_aux(const char *key, const char *value, void *cb)
1255 switch (store.state) {
1257 if (matches(key, value)) {
1258 if (store.seen == 1 && store.multi_replace == 0) {
1259 warning("%s has multiple values", key);
1262 ALLOC_GROW(store.offset, store.seen + 1,
1263 store.offset_alloc);
1265 store.offset[store.seen] = cf->do_ftell(cf);
1271 * What we are looking for is in store.key (both
1272 * section and var), and its section part is baselen
1273 * long. We found key (again, both section and var).
1274 * We would want to know if this key is in the same
1275 * section as what we are looking for. We already
1276 * know we are in the same section as what should
1279 ep = strrchr(key, '.');
1280 section_len = ep - key;
1282 if ((section_len != store.baselen) ||
1283 memcmp(key, store.key, section_len+1)) {
1284 store.state = SECTION_END_SEEN;
1289 * Do not increment matches: this is no match, but we
1290 * just made sure we are in the desired section.
1292 ALLOC_GROW(store.offset, store.seen + 1,
1293 store.offset_alloc);
1294 store.offset[store.seen] = cf->do_ftell(cf);
1296 case SECTION_END_SEEN:
1298 if (matches(key, value)) {
1299 ALLOC_GROW(store.offset, store.seen + 1,
1300 store.offset_alloc);
1301 store.offset[store.seen] = cf->do_ftell(cf);
1302 store.state = KEY_SEEN;
1305 if (strrchr(key, '.') - key == store.baselen &&
1306 !strncmp(key, store.key, store.baselen)) {
1307 store.state = SECTION_SEEN;
1308 ALLOC_GROW(store.offset,
1310 store.offset_alloc);
1311 store.offset[store.seen] = cf->do_ftell(cf);
1318 static int write_error(const char *filename)
1320 error("failed to write new configuration file %s", filename);
1322 /* Same error code as "failed to rename". */
1326 static int store_write_section(int fd, const char *key)
1330 struct strbuf sb = STRBUF_INIT;
1332 dot = memchr(key, '.', store.baselen);
1334 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1335 for (i = dot - key + 1; i < store.baselen; i++) {
1336 if (key[i] == '"' || key[i] == '\\')
1337 strbuf_addch(&sb, '\\');
1338 strbuf_addch(&sb, key[i]);
1340 strbuf_addstr(&sb, "\"]\n");
1342 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1345 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1346 strbuf_release(&sb);
1351 static int store_write_pair(int fd, const char *key, const char *value)
1354 int length = strlen(key + store.baselen + 1);
1355 const char *quote = "";
1356 struct strbuf sb = STRBUF_INIT;
1359 * Check to see if the value needs to be surrounded with a dq pair.
1360 * Note that problematic characters are always backslash-quoted; this
1361 * check is about not losing leading or trailing SP and strings that
1362 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1363 * configuration parser.
1365 if (value[0] == ' ')
1367 for (i = 0; value[i]; i++)
1368 if (value[i] == ';' || value[i] == '#')
1370 if (i && value[i - 1] == ' ')
1373 strbuf_addf(&sb, "\t%.*s = %s",
1374 length, key + store.baselen + 1, quote);
1376 for (i = 0; value[i]; i++)
1379 strbuf_addstr(&sb, "\\n");
1382 strbuf_addstr(&sb, "\\t");
1386 strbuf_addch(&sb, '\\');
1388 strbuf_addch(&sb, value[i]);
1391 strbuf_addf(&sb, "%s\n", quote);
1393 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1394 strbuf_release(&sb);
1399 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1400 size_t offset_, int *found_bracket)
1402 size_t equal_offset = size, bracket_offset = size;
1406 for (offset = offset_-2; offset > 0
1407 && contents[offset] != '\n'; offset--)
1408 switch (contents[offset]) {
1409 case '=': equal_offset = offset; break;
1410 case ']': bracket_offset = offset; break;
1412 if (offset > 0 && contents[offset-1] == '\\') {
1416 if (bracket_offset < equal_offset) {
1418 offset = bracket_offset+1;
1425 int git_config_set_in_file(const char *config_filename,
1426 const char *key, const char *value)
1428 return git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
1431 int git_config_set(const char *key, const char *value)
1433 return git_config_set_multivar(key, value, NULL, 0);
1437 * Auxiliary function to sanity-check and split the key into the section
1438 * identifier and variable name.
1440 * Returns 0 on success, -1 when there is an invalid character in the key and
1441 * -2 if there is no section name in the key.
1443 * store_key - pointer to char* which will hold a copy of the key with
1444 * lowercase section and variable name
1445 * baselen - pointer to int which will hold the length of the
1446 * section + subsection part, can be NULL
1448 int git_config_parse_key(const char *key, char **store_key, int *baselen_)
1450 int i, dot, baselen;
1451 const char *last_dot = strrchr(key, '.');
1454 * Since "key" actually contains the section name and the real
1455 * key name separated by a dot, we have to know where the dot is.
1458 if (last_dot == NULL || last_dot == key) {
1459 error("key does not contain a section: %s", key);
1460 return -CONFIG_NO_SECTION_OR_NAME;
1464 error("key does not contain variable name: %s", key);
1465 return -CONFIG_NO_SECTION_OR_NAME;
1468 baselen = last_dot - key;
1470 *baselen_ = baselen;
1473 * Validate the key and while at it, lower case it for matching.
1475 *store_key = xmalloc(strlen(key) + 1);
1478 for (i = 0; key[i]; i++) {
1479 unsigned char c = key[i];
1482 /* Leave the extended basename untouched.. */
1483 if (!dot || i > baselen) {
1484 if (!iskeychar(c) ||
1485 (i == baselen + 1 && !isalpha(c))) {
1486 error("invalid key: %s", key);
1487 goto out_free_ret_1;
1490 } else if (c == '\n') {
1491 error("invalid key (newline): %s", key);
1492 goto out_free_ret_1;
1494 (*store_key)[i] = c;
1496 (*store_key)[i] = 0;
1503 return -CONFIG_INVALID_KEY;
1507 * If value==NULL, unset in (remove from) config,
1508 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1509 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1510 * else all matching key/values (regardless how many) are removed,
1511 * before the new pair is written.
1513 * Returns 0 on success.
1515 * This function does this:
1517 * - it locks the config file by creating ".git/config.lock"
1519 * - it then parses the config using store_aux() as validator to find
1520 * the position on the key/value pair to replace. If it is to be unset,
1521 * it must be found exactly once.
1523 * - the config file is mmap()ed and the part before the match (if any) is
1524 * written to the lock file, then the changed part and the rest.
1526 * - the config file is removed and the lock file rename()d to it.
1529 int git_config_set_multivar_in_file(const char *config_filename,
1530 const char *key, const char *value,
1531 const char *value_regex, int multi_replace)
1535 struct lock_file *lock = NULL;
1536 char *filename_buf = NULL;
1538 /* parse-key returns negative; flip the sign to feed exit(3) */
1539 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
1543 store.multi_replace = multi_replace;
1545 if (!config_filename)
1546 config_filename = filename_buf = git_pathdup("config");
1549 * The lock serves a purpose in addition to locking: the new
1550 * contents of .git/config will be written into it.
1552 lock = xcalloc(1, sizeof(struct lock_file));
1553 fd = hold_lock_file_for_update(lock, config_filename, 0);
1555 error("could not lock config file %s: %s", config_filename, strerror(errno));
1557 ret = CONFIG_NO_LOCK;
1562 * If .git/config does not exist yet, write a minimal version.
1564 in_fd = open(config_filename, O_RDONLY);
1568 if ( ENOENT != errno ) {
1569 error("opening %s: %s", config_filename,
1571 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
1574 /* if nothing to unset, error out */
1575 if (value == NULL) {
1576 ret = CONFIG_NOTHING_SET;
1580 store.key = (char *)key;
1581 if (!store_write_section(fd, key) ||
1582 !store_write_pair(fd, key, value))
1587 size_t contents_sz, copy_begin, copy_end;
1588 int i, new_line = 0;
1590 if (value_regex == NULL)
1591 store.value_regex = NULL;
1593 if (value_regex[0] == '!') {
1594 store.do_not_match = 1;
1597 store.do_not_match = 0;
1599 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
1600 if (regcomp(store.value_regex, value_regex,
1602 error("invalid pattern: %s", value_regex);
1603 free(store.value_regex);
1604 ret = CONFIG_INVALID_PATTERN;
1609 ALLOC_GROW(store.offset, 1, store.offset_alloc);
1610 store.offset[0] = 0;
1611 store.state = START;
1615 * After this, store.offset will contain the *end* offset
1616 * of the last match, or remain at 0 if no match was found.
1617 * As a side effect, we make sure to transform only a valid
1618 * existing config file.
1620 if (git_config_from_file(store_aux, config_filename, NULL)) {
1621 error("invalid config file %s", config_filename);
1623 if (store.value_regex != NULL) {
1624 regfree(store.value_regex);
1625 free(store.value_regex);
1627 ret = CONFIG_INVALID_FILE;
1632 if (store.value_regex != NULL) {
1633 regfree(store.value_regex);
1634 free(store.value_regex);
1637 /* if nothing to unset, or too many matches, error out */
1638 if ((store.seen == 0 && value == NULL) ||
1639 (store.seen > 1 && multi_replace == 0)) {
1640 ret = CONFIG_NOTHING_SET;
1645 contents_sz = xsize_t(st.st_size);
1646 contents = xmmap(NULL, contents_sz, PROT_READ,
1647 MAP_PRIVATE, in_fd, 0);
1650 if (store.seen == 0)
1653 for (i = 0, copy_begin = 0; i < store.seen; i++) {
1654 if (store.offset[i] == 0) {
1655 store.offset[i] = copy_end = contents_sz;
1656 } else if (store.state != KEY_SEEN) {
1657 copy_end = store.offset[i];
1659 copy_end = find_beginning_of_line(
1660 contents, contents_sz,
1661 store.offset[i]-2, &new_line);
1663 if (copy_end > 0 && contents[copy_end-1] != '\n')
1666 /* write the first part of the config */
1667 if (copy_end > copy_begin) {
1668 if (write_in_full(fd, contents + copy_begin,
1669 copy_end - copy_begin) <
1670 copy_end - copy_begin)
1673 write_str_in_full(fd, "\n") != 1)
1676 copy_begin = store.offset[i];
1679 /* write the pair (value == NULL means unset) */
1680 if (value != NULL) {
1681 if (store.state == START) {
1682 if (!store_write_section(fd, key))
1685 if (!store_write_pair(fd, key, value))
1689 /* write the rest of the config */
1690 if (copy_begin < contents_sz)
1691 if (write_in_full(fd, contents + copy_begin,
1692 contents_sz - copy_begin) <
1693 contents_sz - copy_begin)
1696 munmap(contents, contents_sz);
1699 if (commit_lock_file(lock) < 0) {
1700 error("could not commit config file %s", config_filename);
1701 ret = CONFIG_NO_WRITE;
1706 * lock is committed, so don't try to roll it back below.
1707 * NOTE: Since lockfile.c keeps a linked list of all created
1708 * lock_file structures, it isn't safe to free(lock). It's
1709 * better to just leave it hanging around.
1716 rollback_lock_file(lock);
1721 ret = write_error(lock->filename);
1726 int git_config_set_multivar(const char *key, const char *value,
1727 const char *value_regex, int multi_replace)
1729 return git_config_set_multivar_in_file(NULL, key, value, value_regex,
1733 static int section_name_match (const char *buf, const char *name)
1735 int i = 0, j = 0, dot = 0;
1738 for (i = 1; buf[i] && buf[i] != ']'; i++) {
1739 if (!dot && isspace(buf[i])) {
1741 if (name[j++] != '.')
1743 for (i++; isspace(buf[i]); i++)
1749 if (buf[i] == '\\' && dot)
1751 else if (buf[i] == '"' && dot) {
1752 for (i++; isspace(buf[i]); i++)
1756 if (buf[i] != name[j++])
1759 if (buf[i] == ']' && name[j] == 0) {
1761 * We match, now just find the right length offset by
1762 * gobbling up any whitespace after it, as well
1765 for (; buf[i] && isspace(buf[i]); i++)
1772 static int section_name_is_ok(const char *name)
1774 /* Empty section names are bogus. */
1779 * Before a dot, we must be alphanumeric or dash. After the first dot,
1780 * anything goes, so we can stop checking.
1782 for (; *name && *name != '.'; name++)
1783 if (*name != '-' && !isalnum(*name))
1788 /* if new_name == NULL, the section is removed instead */
1789 int git_config_rename_section_in_file(const char *config_filename,
1790 const char *old_name, const char *new_name)
1792 int ret = 0, remove = 0;
1793 char *filename_buf = NULL;
1794 struct lock_file *lock;
1799 if (new_name && !section_name_is_ok(new_name)) {
1800 ret = error("invalid section name: %s", new_name);
1804 if (!config_filename)
1805 config_filename = filename_buf = git_pathdup("config");
1807 lock = xcalloc(1, sizeof(struct lock_file));
1808 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
1810 ret = error("could not lock config file %s", config_filename);
1814 if (!(config_file = fopen(config_filename, "rb"))) {
1815 /* no config file means nothing to rename, no error */
1816 goto unlock_and_out;
1819 while (fgets(buf, sizeof(buf), config_file)) {
1823 for (i = 0; buf[i] && isspace(buf[i]); i++)
1825 if (buf[i] == '[') {
1826 /* it's a section */
1827 int offset = section_name_match(&buf[i], old_name);
1830 if (new_name == NULL) {
1834 store.baselen = strlen(new_name);
1835 if (!store_write_section(out_fd, new_name)) {
1836 ret = write_error(lock->filename);
1840 * We wrote out the new section, with
1841 * a newline, now skip the old
1844 output += offset + i;
1845 if (strlen(output) > 0) {
1847 * More content means there's
1848 * a declaration to put on the
1849 * next line; indent with a
1860 length = strlen(output);
1861 if (write_in_full(out_fd, output, length) != length) {
1862 ret = write_error(lock->filename);
1866 fclose(config_file);
1868 if (commit_lock_file(lock) < 0)
1869 ret = error("could not commit config file %s", config_filename);
1875 int git_config_rename_section(const char *old_name, const char *new_name)
1877 return git_config_rename_section_in_file(NULL, old_name, new_name);
1881 * Call this to report error for your variable that should not
1882 * get a boolean value (i.e. "[my] var" means "true").
1884 #undef config_error_nonbool
1885 int config_error_nonbool(const char *var)
1887 return error("Missing value for '%s'", var);
1890 int parse_config_key(const char *var,
1891 const char *section,
1892 const char **subsection, int *subsection_len,
1895 int section_len = strlen(section);
1898 /* Does it start with "section." ? */
1899 if (!starts_with(var, section) || var[section_len] != '.')
1903 * Find the key; we don't know yet if we have a subsection, but we must
1904 * parse backwards from the end, since the subsection may have dots in
1907 dot = strrchr(var, '.');
1910 /* Did we have a subsection at all? */
1911 if (dot == var + section_len) {
1913 *subsection_len = 0;
1916 *subsection = var + section_len + 1;
1917 *subsection_len = dot - *subsection;