2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
14 #include "string-list.h"
16 struct config_source {
17 struct config_source *prev;
34 int (*do_fgetc)(struct config_source *c);
35 int (*do_ungetc)(int c, struct config_source *conf);
36 long (*do_ftell)(struct config_source *c);
39 static struct config_source *cf;
41 static int zlib_compression_seen;
44 * Default config_set that contains key-value pairs from the usual set of config
45 * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
46 * config file and the global /etc/gitconfig)
48 static struct config_set the_config_set;
50 static int config_file_fgetc(struct config_source *conf)
52 return fgetc(conf->u.file);
55 static int config_file_ungetc(int c, struct config_source *conf)
57 return ungetc(c, conf->u.file);
60 static long config_file_ftell(struct config_source *conf)
62 return ftell(conf->u.file);
66 static int config_buf_fgetc(struct config_source *conf)
68 if (conf->u.buf.pos < conf->u.buf.len)
69 return conf->u.buf.buf[conf->u.buf.pos++];
74 static int config_buf_ungetc(int c, struct config_source *conf)
76 if (conf->u.buf.pos > 0)
77 return conf->u.buf.buf[--conf->u.buf.pos];
82 static long config_buf_ftell(struct config_source *conf)
84 return conf->u.buf.pos;
87 #define MAX_INCLUDE_DEPTH 10
88 static const char include_depth_advice[] =
89 "exceeded maximum include depth (%d) while including\n"
93 "Do you have circular includes?";
94 static int handle_path_include(const char *path, struct config_include_data *inc)
97 struct strbuf buf = STRBUF_INIT;
101 return config_error_nonbool("include.path");
103 expanded = expand_user_path(path);
105 return error("Could not expand include path '%s'", path);
109 * Use an absolute path as-is, but interpret relative paths
110 * based on the including config file.
112 if (!is_absolute_path(path)) {
115 if (!cf || !cf->path)
116 return error("relative config includes must come from files");
118 slash = find_last_dir_sep(cf->path);
120 strbuf_add(&buf, cf->path, slash - cf->path + 1);
121 strbuf_addstr(&buf, path);
125 if (!access_or_die(path, R_OK, 0)) {
126 if (++inc->depth > MAX_INCLUDE_DEPTH)
127 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
128 cf && cf->name ? cf->name : "the command line");
129 ret = git_config_from_file(git_config_include, path, inc);
132 strbuf_release(&buf);
137 int git_config_include(const char *var, const char *value, void *data)
139 struct config_include_data *inc = data;
143 * Pass along all values, including "include" directives; this makes it
144 * possible to query information on the includes themselves.
146 ret = inc->fn(var, value, inc->data);
150 if (!strcmp(var, "include.path"))
151 ret = handle_path_include(value, inc);
155 void git_config_push_parameter(const char *text)
157 struct strbuf env = STRBUF_INIT;
158 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
160 strbuf_addstr(&env, old);
161 strbuf_addch(&env, ' ');
163 sq_quote_buf(&env, text);
164 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
165 strbuf_release(&env);
168 int git_config_parse_parameter(const char *text,
169 config_fn_t fn, void *data)
172 struct strbuf **pair;
174 pair = strbuf_split_str(text, '=', 2);
176 return error("bogus config parameter: %s", text);
178 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
179 strbuf_setlen(pair[0], pair[0]->len - 1);
180 value = pair[1] ? pair[1]->buf : "";
185 strbuf_trim(pair[0]);
187 strbuf_list_free(pair);
188 return error("bogus config parameter: %s", text);
190 strbuf_tolower(pair[0]);
191 if (fn(pair[0]->buf, value, data) < 0) {
192 strbuf_list_free(pair);
195 strbuf_list_free(pair);
199 int git_config_from_parameters(config_fn_t fn, void *data)
201 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
203 const char **argv = NULL;
204 int nr = 0, alloc = 0;
209 /* sq_dequote will write over it */
212 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
214 return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
217 for (i = 0; i < nr; i++) {
218 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
230 static int get_next_char(void)
232 int c = cf->do_fgetc(cf);
235 /* DOS like systems */
236 c = cf->do_fgetc(cf);
238 cf->do_ungetc(c, cf);
252 static char *parse_value(void)
254 int quote = 0, comment = 0, space = 0;
256 strbuf_reset(&cf->value);
258 int c = get_next_char();
264 return cf->value.buf;
268 if (isspace(c) && !quote) {
274 if (c == ';' || c == '#') {
279 for (; space; space--)
280 strbuf_addch(&cf->value, ' ');
295 /* Some characters escape as themselves */
298 /* Reject unknown escape sequences */
302 strbuf_addch(&cf->value, c);
309 strbuf_addch(&cf->value, c);
313 static inline int iskeychar(int c)
315 return isalnum(c) || c == '-';
318 static int get_value(config_fn_t fn, void *data, struct strbuf *name)
324 /* Get the full name */
331 strbuf_addch(name, tolower(c));
334 while (c == ' ' || c == '\t')
341 value = parse_value();
346 * We already consumed the \n, but we need linenr to point to
347 * the line we just parsed during the call to fn to get
348 * accurate line number in error messages.
351 ret = fn(name->buf, value, data);
356 static int get_extended_base_var(struct strbuf *name, int c)
360 goto error_incomplete_line;
362 } while (isspace(c));
364 /* We require the format to be '[base "extension"]' */
367 strbuf_addch(name, '.');
370 int c = get_next_char();
372 goto error_incomplete_line;
378 goto error_incomplete_line;
380 strbuf_addch(name, c);
384 if (get_next_char() != ']')
387 error_incomplete_line:
392 static int get_base_var(struct strbuf *name)
395 int c = get_next_char();
401 return get_extended_base_var(name, c);
402 if (!iskeychar(c) && c != '.')
404 strbuf_addch(name, tolower(c));
408 static int git_parse_source(config_fn_t fn, void *data)
412 struct strbuf *var = &cf->var;
414 /* U+FEFF Byte Order Mark in UTF8 */
415 static const unsigned char *utf8_bom = (unsigned char *) "\xef\xbb\xbf";
416 const unsigned char *bomptr = utf8_bom;
419 int c = get_next_char();
420 if (bomptr && *bomptr) {
421 /* We are at the file beginning; skip UTF8-encoded BOM
422 * if present. Sane editors won't put this in on their
423 * own, but e.g. Windows Notepad will do it happily. */
424 if ((unsigned char) c == *bomptr) {
428 /* Do not tolerate partial BOM. */
429 if (bomptr != utf8_bom)
431 /* No BOM at file beginning. Cool. */
441 if (comment || isspace(c))
443 if (c == '#' || c == ';') {
448 /* Reset prior to determining a new stem */
450 if (get_base_var(var) < 0 || var->len < 1)
452 strbuf_addch(var, '.');
459 * Truncate the var name back to the section header
460 * stem prior to grabbing the suffix part of the name
463 strbuf_setlen(var, baselen);
464 strbuf_addch(var, tolower(c));
465 if (get_value(fn, data, var) < 0)
468 if (cf->die_on_error)
469 die(_("bad config file line %d in %s"), cf->linenr, cf->name);
471 return error(_("bad config file line %d in %s"), cf->linenr, cf->name);
474 static int parse_unit_factor(const char *end, uintmax_t *val)
478 else if (!strcasecmp(end, "k")) {
482 else if (!strcasecmp(end, "m")) {
486 else if (!strcasecmp(end, "g")) {
487 *val *= 1024 * 1024 * 1024;
493 static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
495 if (value && *value) {
499 uintmax_t factor = 1;
502 val = strtoimax(value, &end, 0);
505 if (!parse_unit_factor(end, &factor)) {
511 if (uval > max || labs(val) > uval) {
523 static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
525 if (value && *value) {
531 val = strtoumax(value, &end, 0);
535 if (!parse_unit_factor(end, &val)) {
539 if (val > max || oldval > val) {
550 static int git_parse_int(const char *value, int *ret)
553 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
559 static int git_parse_int64(const char *value, int64_t *ret)
562 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
568 int git_parse_ulong(const char *value, unsigned long *ret)
571 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
578 static void die_bad_number(const char *name, const char *value)
580 const char *reason = errno == ERANGE ?
587 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
588 value, name, cf->name, reason);
589 die(_("bad numeric config value '%s' for '%s': %s"), value, name, reason);
592 int git_config_int(const char *name, const char *value)
595 if (!git_parse_int(value, &ret))
596 die_bad_number(name, value);
600 int64_t git_config_int64(const char *name, const char *value)
603 if (!git_parse_int64(value, &ret))
604 die_bad_number(name, value);
608 unsigned long git_config_ulong(const char *name, const char *value)
611 if (!git_parse_ulong(value, &ret))
612 die_bad_number(name, value);
616 static int git_config_maybe_bool_text(const char *name, const char *value)
622 if (!strcasecmp(value, "true")
623 || !strcasecmp(value, "yes")
624 || !strcasecmp(value, "on"))
626 if (!strcasecmp(value, "false")
627 || !strcasecmp(value, "no")
628 || !strcasecmp(value, "off"))
633 int git_config_maybe_bool(const char *name, const char *value)
635 int v = git_config_maybe_bool_text(name, value);
638 if (git_parse_int(value, &v))
643 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
645 int v = git_config_maybe_bool_text(name, value);
651 return git_config_int(name, value);
654 int git_config_bool(const char *name, const char *value)
657 return !!git_config_bool_or_int(name, value, &discard);
660 int git_config_string(const char **dest, const char *var, const char *value)
663 return config_error_nonbool(var);
664 *dest = xstrdup(value);
668 int git_config_pathname(const char **dest, const char *var, const char *value)
671 return config_error_nonbool(var);
672 *dest = expand_user_path(value);
674 die(_("failed to expand user dir in: '%s'"), value);
678 static int git_default_core_config(const char *var, const char *value)
680 /* This needs a better name */
681 if (!strcmp(var, "core.filemode")) {
682 trust_executable_bit = git_config_bool(var, value);
685 if (!strcmp(var, "core.trustctime")) {
686 trust_ctime = git_config_bool(var, value);
689 if (!strcmp(var, "core.checkstat")) {
690 if (!strcasecmp(value, "default"))
692 else if (!strcasecmp(value, "minimal"))
696 if (!strcmp(var, "core.quotepath")) {
697 quote_path_fully = git_config_bool(var, value);
701 if (!strcmp(var, "core.symlinks")) {
702 has_symlinks = git_config_bool(var, value);
706 if (!strcmp(var, "core.ignorecase")) {
707 ignore_case = git_config_bool(var, value);
711 if (!strcmp(var, "core.attributesfile"))
712 return git_config_pathname(&git_attributes_file, var, value);
714 if (!strcmp(var, "core.bare")) {
715 is_bare_repository_cfg = git_config_bool(var, value);
719 if (!strcmp(var, "core.ignorestat")) {
720 assume_unchanged = git_config_bool(var, value);
724 if (!strcmp(var, "core.prefersymlinkrefs")) {
725 prefer_symlink_refs = git_config_bool(var, value);
729 if (!strcmp(var, "core.logallrefupdates")) {
730 log_all_ref_updates = git_config_bool(var, value);
734 if (!strcmp(var, "core.warnambiguousrefs")) {
735 warn_ambiguous_refs = git_config_bool(var, value);
739 if (!strcmp(var, "core.abbrev")) {
740 int abbrev = git_config_int(var, value);
741 if (abbrev < minimum_abbrev || abbrev > 40)
743 default_abbrev = abbrev;
747 if (!strcmp(var, "core.loosecompression")) {
748 int level = git_config_int(var, value);
750 level = Z_DEFAULT_COMPRESSION;
751 else if (level < 0 || level > Z_BEST_COMPRESSION)
752 die(_("bad zlib compression level %d"), level);
753 zlib_compression_level = level;
754 zlib_compression_seen = 1;
758 if (!strcmp(var, "core.compression")) {
759 int level = git_config_int(var, value);
761 level = Z_DEFAULT_COMPRESSION;
762 else if (level < 0 || level > Z_BEST_COMPRESSION)
763 die(_("bad zlib compression level %d"), level);
764 core_compression_level = level;
765 core_compression_seen = 1;
766 if (!zlib_compression_seen)
767 zlib_compression_level = level;
771 if (!strcmp(var, "core.packedgitwindowsize")) {
772 int pgsz_x2 = getpagesize() * 2;
773 packed_git_window_size = git_config_ulong(var, value);
775 /* This value must be multiple of (pagesize * 2) */
776 packed_git_window_size /= pgsz_x2;
777 if (packed_git_window_size < 1)
778 packed_git_window_size = 1;
779 packed_git_window_size *= pgsz_x2;
783 if (!strcmp(var, "core.bigfilethreshold")) {
784 big_file_threshold = git_config_ulong(var, value);
788 if (!strcmp(var, "core.packedgitlimit")) {
789 packed_git_limit = git_config_ulong(var, value);
793 if (!strcmp(var, "core.deltabasecachelimit")) {
794 delta_base_cache_limit = git_config_ulong(var, value);
798 if (!strcmp(var, "core.autocrlf")) {
799 if (value && !strcasecmp(value, "input")) {
800 if (core_eol == EOL_CRLF)
801 return error("core.autocrlf=input conflicts with core.eol=crlf");
802 auto_crlf = AUTO_CRLF_INPUT;
805 auto_crlf = git_config_bool(var, value);
809 if (!strcmp(var, "core.safecrlf")) {
810 if (value && !strcasecmp(value, "warn")) {
811 safe_crlf = SAFE_CRLF_WARN;
814 safe_crlf = git_config_bool(var, value);
818 if (!strcmp(var, "core.eol")) {
819 if (value && !strcasecmp(value, "lf"))
821 else if (value && !strcasecmp(value, "crlf"))
823 else if (value && !strcasecmp(value, "native"))
824 core_eol = EOL_NATIVE;
826 core_eol = EOL_UNSET;
827 if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
828 return error("core.autocrlf=input conflicts with core.eol=crlf");
832 if (!strcmp(var, "core.notesref")) {
833 notes_ref_name = xstrdup(value);
837 if (!strcmp(var, "core.pager"))
838 return git_config_string(&pager_program, var, value);
840 if (!strcmp(var, "core.editor"))
841 return git_config_string(&editor_program, var, value);
843 if (!strcmp(var, "core.commentchar")) {
845 return config_error_nonbool(var);
846 else if (!strcasecmp(value, "auto"))
847 auto_comment_line_char = 1;
848 else if (value[0] && !value[1]) {
849 comment_line_char = value[0];
850 auto_comment_line_char = 0;
852 return error("core.commentChar should only be one character");
856 if (!strcmp(var, "core.askpass"))
857 return git_config_string(&askpass_program, var, value);
859 if (!strcmp(var, "core.excludesfile"))
860 return git_config_pathname(&excludes_file, var, value);
862 if (!strcmp(var, "core.whitespace")) {
864 return config_error_nonbool(var);
865 whitespace_rule_cfg = parse_whitespace_rule(value);
869 if (!strcmp(var, "core.fsyncobjectfiles")) {
870 fsync_object_files = git_config_bool(var, value);
874 if (!strcmp(var, "core.preloadindex")) {
875 core_preload_index = git_config_bool(var, value);
879 if (!strcmp(var, "core.createobject")) {
880 if (!strcmp(value, "rename"))
881 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
882 else if (!strcmp(value, "link"))
883 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
885 die(_("invalid mode for object creation: %s"), value);
889 if (!strcmp(var, "core.sparsecheckout")) {
890 core_apply_sparse_checkout = git_config_bool(var, value);
894 if (!strcmp(var, "core.precomposeunicode")) {
895 precomposed_unicode = git_config_bool(var, value);
899 if (!strcmp(var, "core.protecthfs")) {
900 protect_hfs = git_config_bool(var, value);
904 if (!strcmp(var, "core.protectntfs")) {
905 protect_ntfs = git_config_bool(var, value);
909 if (!strcmp(var, "core.mode")) {
911 return config_error_nonbool(var);
912 else if (!strcmp(value, "current"))
913 git_mode = MODE_CURRENT;
914 else if (!strcmp(value, "next")) {
915 git_mode = MODE_NEXT;
916 } else if (!strcmp(value, "progress")) {
917 git_mode = MODE_PROGRESS;
918 fetch_default = FETCH_DEFAULT_SIMPLE;
920 die("wrong mode '%s'", value);
924 /* Add other config variables here and to Documentation/config.txt. */
928 static int git_default_i18n_config(const char *var, const char *value)
930 if (!strcmp(var, "i18n.commitencoding"))
931 return git_config_string(&git_commit_encoding, var, value);
933 if (!strcmp(var, "i18n.logoutputencoding"))
934 return git_config_string(&git_log_output_encoding, var, value);
936 /* Add other config variables here and to Documentation/config.txt. */
940 static int git_default_branch_config(const char *var, const char *value)
942 if (!strcmp(var, "branch.autosetupmerge")) {
943 if (value && !strcasecmp(value, "always")) {
944 git_branch_track = BRANCH_TRACK_ALWAYS;
947 git_branch_track = git_config_bool(var, value);
950 if (!strcmp(var, "branch.autosetuprebase")) {
952 return config_error_nonbool(var);
953 else if (!strcmp(value, "never"))
954 autorebase = AUTOREBASE_NEVER;
955 else if (!strcmp(value, "local"))
956 autorebase = AUTOREBASE_LOCAL;
957 else if (!strcmp(value, "remote"))
958 autorebase = AUTOREBASE_REMOTE;
959 else if (!strcmp(value, "always"))
960 autorebase = AUTOREBASE_ALWAYS;
962 return error("Malformed value for %s", var);
966 /* Add other config variables here and to Documentation/config.txt. */
970 static int git_default_push_config(const char *var, const char *value)
972 if (!strcmp(var, "push.default")) {
974 return config_error_nonbool(var);
975 else if (!strcmp(value, "nothing"))
976 push_default = PUSH_DEFAULT_NOTHING;
977 else if (!strcmp(value, "matching"))
978 push_default = PUSH_DEFAULT_MATCHING;
979 else if (!strcmp(value, "simple"))
980 push_default = PUSH_DEFAULT_SIMPLE;
981 else if (!strcmp(value, "upstream"))
982 push_default = PUSH_DEFAULT_UPSTREAM;
983 else if (!strcmp(value, "tracking")) /* deprecated */
984 push_default = PUSH_DEFAULT_UPSTREAM;
985 else if (!strcmp(value, "current"))
986 push_default = PUSH_DEFAULT_CURRENT;
988 error("Malformed value for %s: %s", var, value);
989 return error("Must be one of nothing, matching, simple, "
990 "upstream or current.");
995 /* Add other config variables here and to Documentation/config.txt. */
999 static int git_default_fetch_config(const char *var, const char *value)
1001 if (strcmp(var, "fetch.default"))
1005 return config_error_nonbool(var);
1006 else if (!strcmp(value, "simple"))
1007 fetch_default = FETCH_DEFAULT_SIMPLE;
1008 else if (!strcmp(value, "current"))
1009 fetch_default = FETCH_DEFAULT_CURRENT;
1011 error("Malformed value for %s: %s", var, value);
1012 return error("Must be simple, or current.");
1017 static int git_default_mailmap_config(const char *var, const char *value)
1019 if (!strcmp(var, "mailmap.file"))
1020 return git_config_pathname(&git_mailmap_file, var, value);
1021 if (!strcmp(var, "mailmap.blob"))
1022 return git_config_string(&git_mailmap_blob, var, value);
1024 /* Add other config variables here and to Documentation/config.txt. */
1028 int git_default_config(const char *var, const char *value, void *dummy)
1030 if (starts_with(var, "core."))
1031 return git_default_core_config(var, value);
1033 if (starts_with(var, "user."))
1034 return git_ident_config(var, value, dummy);
1036 if (starts_with(var, "i18n."))
1037 return git_default_i18n_config(var, value);
1039 if (starts_with(var, "branch."))
1040 return git_default_branch_config(var, value);
1042 if (starts_with(var, "push."))
1043 return git_default_push_config(var, value);
1045 if (starts_with(var, "fetch."))
1046 return git_default_fetch_config(var, value);
1048 if (starts_with(var, "mailmap."))
1049 return git_default_mailmap_config(var, value);
1051 if (starts_with(var, "advice."))
1052 return git_default_advice_config(var, value);
1054 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1055 pager_use_color = git_config_bool(var,value);
1059 if (!strcmp(var, "pack.packsizelimit")) {
1060 pack_size_limit_cfg = git_config_ulong(var, value);
1063 /* Add other config variables here and to Documentation/config.txt. */
1068 * All source specific fields in the union, die_on_error, name and the callbacks
1069 * fgetc, ungetc, ftell of top need to be initialized before calling
1072 static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
1076 /* push config-file parsing state stack */
1080 strbuf_init(&top->value, 1024);
1081 strbuf_init(&top->var, 1024);
1084 ret = git_parse_source(fn, data);
1086 /* pop config-file parsing state stack */
1087 strbuf_release(&top->value);
1088 strbuf_release(&top->var);
1094 static int do_config_from_file(config_fn_t fn,
1095 const char *name, const char *path, FILE *f, void *data)
1097 struct config_source top;
1102 top.die_on_error = 1;
1103 top.do_fgetc = config_file_fgetc;
1104 top.do_ungetc = config_file_ungetc;
1105 top.do_ftell = config_file_ftell;
1107 return do_config_from(&top, fn, data);
1110 static int git_config_from_stdin(config_fn_t fn, void *data)
1112 return do_config_from_file(fn, "<stdin>", NULL, stdin, data);
1115 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1120 f = fopen(filename, "r");
1122 ret = do_config_from_file(fn, filename, filename, f, data);
1128 int git_config_from_buf(config_fn_t fn, const char *name, const char *buf,
1129 size_t len, void *data)
1131 struct config_source top;
1133 top.u.buf.buf = buf;
1134 top.u.buf.len = len;
1138 top.die_on_error = 0;
1139 top.do_fgetc = config_buf_fgetc;
1140 top.do_ungetc = config_buf_ungetc;
1141 top.do_ftell = config_buf_ftell;
1143 return do_config_from(&top, fn, data);
1146 static int git_config_from_blob_sha1(config_fn_t fn,
1148 const unsigned char *sha1,
1151 enum object_type type;
1156 buf = read_sha1_file(sha1, &type, &size);
1158 return error("unable to load config blob object '%s'", name);
1159 if (type != OBJ_BLOB) {
1161 return error("reference '%s' does not point to a blob", name);
1164 ret = git_config_from_buf(fn, name, buf, size, data);
1170 static int git_config_from_blob_ref(config_fn_t fn,
1174 unsigned char sha1[20];
1176 if (get_sha1(name, sha1) < 0)
1177 return error("unable to resolve config blob '%s'", name);
1178 return git_config_from_blob_sha1(fn, name, sha1, data);
1181 const char *git_etc_gitconfig(void)
1183 static const char *system_wide;
1185 system_wide = system_path(ETC_GITCONFIG);
1190 * Parse environment variable 'k' as a boolean (in various
1191 * possible spellings); if missing, use the default value 'def'.
1193 int git_env_bool(const char *k, int def)
1195 const char *v = getenv(k);
1196 return v ? git_config_bool(k, v) : def;
1200 * Parse environment variable 'k' as ulong with possibly a unit
1201 * suffix; if missing, use the default value 'val'.
1203 unsigned long git_env_ulong(const char *k, unsigned long val)
1205 const char *v = getenv(k);
1206 if (v && !git_parse_ulong(v, &val))
1207 die("failed to parse %s", k);
1211 int git_config_system(void)
1213 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1216 int git_config_early(config_fn_t fn, void *data, const char *repo_config)
1218 int ret = 0, found = 0;
1219 char *xdg_config = NULL;
1220 char *user_config = NULL;
1222 home_config_paths(&user_config, &xdg_config, "config");
1224 ret += fn("alias.ci", "commit", data);
1225 ret += fn("alias.co", "checkout", data);
1226 ret += fn("alias.rb", "rebase", data);
1227 ret += fn("alias.st", "status", data);
1228 ret += fn("alias.br", "branch", data);
1229 ret += fn("alias.pi", "cherry-pick", data);
1230 ret += fn("alias.mt", "mergetool", data);
1232 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0)) {
1233 ret += git_config_from_file(fn, git_etc_gitconfig(),
1238 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK)) {
1239 ret += git_config_from_file(fn, xdg_config, data);
1243 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK)) {
1244 ret += git_config_from_file(fn, user_config, data);
1248 if (repo_config && !access_or_die(repo_config, R_OK, 0)) {
1249 ret += git_config_from_file(fn, repo_config, data);
1253 switch (git_config_from_parameters(fn, data)) {
1254 case -1: /* error */
1255 die(_("unable to parse command-line config"));
1257 case 0: /* found nothing */
1259 default: /* found at least one item */
1266 return ret == 0 ? found : ret;
1269 int git_config_with_options(config_fn_t fn, void *data,
1270 struct git_config_source *config_source,
1271 int respect_includes)
1273 char *repo_config = NULL;
1275 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1277 if (respect_includes) {
1280 fn = git_config_include;
1285 * If we have a specific filename, use it. Otherwise, follow the
1286 * regular lookup sequence.
1288 if (config_source && config_source->use_stdin)
1289 return git_config_from_stdin(fn, data);
1290 else if (config_source && config_source->file)
1291 return git_config_from_file(fn, config_source->file, data);
1292 else if (config_source && config_source->blob)
1293 return git_config_from_blob_ref(fn, config_source->blob, data);
1295 repo_config = git_pathdup("config");
1296 ret = git_config_early(fn, data, repo_config);
1302 static void git_config_raw(config_fn_t fn, void *data)
1304 if (git_config_with_options(fn, data, NULL, 1) < 0)
1306 * git_config_with_options() normally returns only
1307 * positive values, as most errors are fatal, and
1308 * non-fatal potential errors are guarded by "if"
1309 * statements that are entered only when no error is
1312 * If we ever encounter a non-fatal error, it means
1313 * something went really wrong and we should stop
1316 die(_("unknown error occured while reading the configuration files"));
1319 static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
1322 struct string_list *values;
1323 struct config_set_element *entry;
1324 struct configset_list *list = &cs->list;
1325 struct key_value_info *kv_info;
1327 for (i = 0; i < list->nr; i++) {
1328 entry = list->items[i].e;
1329 value_index = list->items[i].value_index;
1330 values = &entry->value_list;
1331 if (fn(entry->key, values->items[value_index].string, data) < 0) {
1332 kv_info = values->items[value_index].util;
1333 git_die_config_linenr(entry->key, kv_info->filename, kv_info->linenr);
1338 static void git_config_check_init(void);
1340 void git_config(config_fn_t fn, void *data)
1342 git_config_check_init();
1343 configset_iter(&the_config_set, fn, data);
1346 static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1348 struct config_set_element k;
1349 struct config_set_element *found_entry;
1350 char *normalized_key;
1353 * `key` may come from the user, so normalize it before using it
1354 * for querying entries from the hashmap.
1356 ret = git_config_parse_key(key, &normalized_key, NULL);
1361 hashmap_entry_init(&k, strhash(normalized_key));
1362 k.key = normalized_key;
1363 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1364 free(normalized_key);
1368 static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1370 struct config_set_element *e;
1371 struct string_list_item *si;
1372 struct configset_list_item *l_item;
1373 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1375 e = configset_find_element(cs, key);
1377 * Since the keys are being fed by git_config*() callback mechanism, they
1378 * are already normalized. So simply add them without any further munging.
1381 e = xmalloc(sizeof(*e));
1382 hashmap_entry_init(e, strhash(key));
1383 e->key = xstrdup(key);
1384 string_list_init(&e->value_list, 1);
1385 hashmap_add(&cs->config_hash, e);
1387 si = string_list_append_nodup(&e->value_list, value ? xstrdup(value) : NULL);
1389 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1390 l_item = &cs->list.items[cs->list.nr++];
1392 l_item->value_index = e->value_list.nr - 1;
1395 kv_info->filename = strintern(cf->name);
1396 kv_info->linenr = cf->linenr;
1398 /* for values read from `git_config_from_parameters()` */
1399 kv_info->filename = NULL;
1400 kv_info->linenr = -1;
1407 static int config_set_element_cmp(const struct config_set_element *e1,
1408 const struct config_set_element *e2, const void *unused)
1410 return strcmp(e1->key, e2->key);
1413 void git_configset_init(struct config_set *cs)
1415 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1416 cs->hash_initialized = 1;
1419 cs->list.items = NULL;
1422 void git_configset_clear(struct config_set *cs)
1424 struct config_set_element *entry;
1425 struct hashmap_iter iter;
1426 if (!cs->hash_initialized)
1429 hashmap_iter_init(&cs->config_hash, &iter);
1430 while ((entry = hashmap_iter_next(&iter))) {
1432 string_list_clear(&entry->value_list, 1);
1434 hashmap_free(&cs->config_hash, 1);
1435 cs->hash_initialized = 0;
1436 free(cs->list.items);
1439 cs->list.items = NULL;
1442 static int config_set_callback(const char *key, const char *value, void *cb)
1444 struct config_set *cs = cb;
1445 configset_add_value(cs, key, value);
1449 int git_configset_add_file(struct config_set *cs, const char *filename)
1451 return git_config_from_file(config_set_callback, filename, cs);
1454 int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1456 const struct string_list *values = NULL;
1458 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1459 * queried key in the files of the configset, the value returned will be the last
1460 * value in the value list for that key.
1462 values = git_configset_get_value_multi(cs, key);
1466 assert(values->nr > 0);
1467 *value = values->items[values->nr - 1].string;
1471 const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1473 struct config_set_element *e = configset_find_element(cs, key);
1474 return e ? &e->value_list : NULL;
1477 int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1480 if (!git_configset_get_value(cs, key, &value))
1481 return git_config_string(dest, key, value);
1486 int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1488 return git_configset_get_string_const(cs, key, (const char **)dest);
1491 int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1494 if (!git_configset_get_value(cs, key, &value)) {
1495 *dest = git_config_int(key, value);
1501 int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1504 if (!git_configset_get_value(cs, key, &value)) {
1505 *dest = git_config_ulong(key, value);
1511 int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1514 if (!git_configset_get_value(cs, key, &value)) {
1515 *dest = git_config_bool(key, value);
1521 int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1522 int *is_bool, int *dest)
1525 if (!git_configset_get_value(cs, key, &value)) {
1526 *dest = git_config_bool_or_int(key, value, is_bool);
1532 int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1535 if (!git_configset_get_value(cs, key, &value)) {
1536 *dest = git_config_maybe_bool(key, value);
1544 int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1547 if (!git_configset_get_value(cs, key, &value))
1548 return git_config_pathname(dest, key, value);
1553 static void git_config_check_init(void)
1555 if (the_config_set.hash_initialized)
1557 git_configset_init(&the_config_set);
1558 git_config_raw(config_set_callback, &the_config_set);
1561 void git_config_clear(void)
1563 if (!the_config_set.hash_initialized)
1565 git_configset_clear(&the_config_set);
1568 int git_config_get_value(const char *key, const char **value)
1570 git_config_check_init();
1571 return git_configset_get_value(&the_config_set, key, value);
1574 const struct string_list *git_config_get_value_multi(const char *key)
1576 git_config_check_init();
1577 return git_configset_get_value_multi(&the_config_set, key);
1580 int git_config_get_string_const(const char *key, const char **dest)
1583 git_config_check_init();
1584 ret = git_configset_get_string_const(&the_config_set, key, dest);
1586 git_die_config(key, NULL);
1590 int git_config_get_string(const char *key, char **dest)
1592 git_config_check_init();
1593 return git_config_get_string_const(key, (const char **)dest);
1596 int git_config_get_int(const char *key, int *dest)
1598 git_config_check_init();
1599 return git_configset_get_int(&the_config_set, key, dest);
1602 int git_config_get_ulong(const char *key, unsigned long *dest)
1604 git_config_check_init();
1605 return git_configset_get_ulong(&the_config_set, key, dest);
1608 int git_config_get_bool(const char *key, int *dest)
1610 git_config_check_init();
1611 return git_configset_get_bool(&the_config_set, key, dest);
1614 int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1616 git_config_check_init();
1617 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1620 int git_config_get_maybe_bool(const char *key, int *dest)
1622 git_config_check_init();
1623 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1626 int git_config_get_pathname(const char *key, const char **dest)
1629 git_config_check_init();
1630 ret = git_configset_get_pathname(&the_config_set, key, dest);
1632 git_die_config(key, NULL);
1637 void git_die_config_linenr(const char *key, const char *filename, int linenr)
1640 die(_("unable to parse '%s' from command-line config"), key);
1642 die(_("bad config variable '%s' in file '%s' at line %d"),
1643 key, filename, linenr);
1646 NORETURN __attribute__((format(printf, 2, 3)))
1647 void git_die_config(const char *key, const char *err, ...)
1649 const struct string_list *values;
1650 struct key_value_info *kv_info;
1654 va_start(params, err);
1655 vreportf("error: ", err, params);
1658 values = git_config_get_value_multi(key);
1659 kv_info = values->items[values->nr - 1].util;
1660 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
1664 * Find all the stuff for git_config_set() below.
1671 regex_t *value_regex;
1674 unsigned int offset_alloc;
1675 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
1679 static int matches(const char *key, const char *value)
1681 if (strcmp(key, store.key))
1682 return 0; /* not ours */
1683 if (!store.value_regex)
1684 return 1; /* always matches */
1685 if (store.value_regex == CONFIG_REGEX_NONE)
1686 return 0; /* never matches */
1688 return store.do_not_match ^
1689 (value && !regexec(store.value_regex, value, 0, NULL, 0));
1692 static int store_aux(const char *key, const char *value, void *cb)
1697 switch (store.state) {
1699 if (matches(key, value)) {
1700 if (store.seen == 1 && store.multi_replace == 0) {
1701 warning(_("%s has multiple values"), key);
1704 ALLOC_GROW(store.offset, store.seen + 1,
1705 store.offset_alloc);
1707 store.offset[store.seen] = cf->do_ftell(cf);
1713 * What we are looking for is in store.key (both
1714 * section and var), and its section part is baselen
1715 * long. We found key (again, both section and var).
1716 * We would want to know if this key is in the same
1717 * section as what we are looking for. We already
1718 * know we are in the same section as what should
1721 ep = strrchr(key, '.');
1722 section_len = ep - key;
1724 if ((section_len != store.baselen) ||
1725 memcmp(key, store.key, section_len+1)) {
1726 store.state = SECTION_END_SEEN;
1731 * Do not increment matches: this is no match, but we
1732 * just made sure we are in the desired section.
1734 ALLOC_GROW(store.offset, store.seen + 1,
1735 store.offset_alloc);
1736 store.offset[store.seen] = cf->do_ftell(cf);
1738 case SECTION_END_SEEN:
1740 if (matches(key, value)) {
1741 ALLOC_GROW(store.offset, store.seen + 1,
1742 store.offset_alloc);
1743 store.offset[store.seen] = cf->do_ftell(cf);
1744 store.state = KEY_SEEN;
1747 if (strrchr(key, '.') - key == store.baselen &&
1748 !strncmp(key, store.key, store.baselen)) {
1749 store.state = SECTION_SEEN;
1750 ALLOC_GROW(store.offset,
1752 store.offset_alloc);
1753 store.offset[store.seen] = cf->do_ftell(cf);
1760 static int write_error(const char *filename)
1762 error("failed to write new configuration file %s", filename);
1764 /* Same error code as "failed to rename". */
1768 static int store_write_section(int fd, const char *key)
1772 struct strbuf sb = STRBUF_INIT;
1774 dot = memchr(key, '.', store.baselen);
1776 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
1777 for (i = dot - key + 1; i < store.baselen; i++) {
1778 if (key[i] == '"' || key[i] == '\\')
1779 strbuf_addch(&sb, '\\');
1780 strbuf_addch(&sb, key[i]);
1782 strbuf_addstr(&sb, "\"]\n");
1784 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
1787 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1788 strbuf_release(&sb);
1793 static int store_write_pair(int fd, const char *key, const char *value)
1796 int length = strlen(key + store.baselen + 1);
1797 const char *quote = "";
1798 struct strbuf sb = STRBUF_INIT;
1801 * Check to see if the value needs to be surrounded with a dq pair.
1802 * Note that problematic characters are always backslash-quoted; this
1803 * check is about not losing leading or trailing SP and strings that
1804 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1805 * configuration parser.
1807 if (value[0] == ' ')
1809 for (i = 0; value[i]; i++)
1810 if (value[i] == ';' || value[i] == '#')
1812 if (i && value[i - 1] == ' ')
1815 strbuf_addf(&sb, "\t%.*s = %s",
1816 length, key + store.baselen + 1, quote);
1818 for (i = 0; value[i]; i++)
1821 strbuf_addstr(&sb, "\\n");
1824 strbuf_addstr(&sb, "\\t");
1828 strbuf_addch(&sb, '\\');
1830 strbuf_addch(&sb, value[i]);
1833 strbuf_addf(&sb, "%s\n", quote);
1835 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
1836 strbuf_release(&sb);
1841 static ssize_t find_beginning_of_line(const char *contents, size_t size,
1842 size_t offset_, int *found_bracket)
1844 size_t equal_offset = size, bracket_offset = size;
1848 for (offset = offset_-2; offset > 0
1849 && contents[offset] != '\n'; offset--)
1850 switch (contents[offset]) {
1851 case '=': equal_offset = offset; break;
1852 case ']': bracket_offset = offset; break;
1854 if (offset > 0 && contents[offset-1] == '\\') {
1858 if (bracket_offset < equal_offset) {
1860 offset = bracket_offset+1;
1867 int git_config_set_in_file(const char *config_filename,
1868 const char *key, const char *value)
1870 return git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
1873 int git_config_set(const char *key, const char *value)
1875 return git_config_set_multivar(key, value, NULL, 0);
1879 * Auxiliary function to sanity-check and split the key into the section
1880 * identifier and variable name.
1882 * Returns 0 on success, -1 when there is an invalid character in the key and
1883 * -2 if there is no section name in the key.
1885 * store_key - pointer to char* which will hold a copy of the key with
1886 * lowercase section and variable name
1887 * baselen - pointer to int which will hold the length of the
1888 * section + subsection part, can be NULL
1890 int git_config_parse_key(const char *key, char **store_key, int *baselen_)
1892 int i, dot, baselen;
1893 const char *last_dot = strrchr(key, '.');
1896 * Since "key" actually contains the section name and the real
1897 * key name separated by a dot, we have to know where the dot is.
1900 if (last_dot == NULL || last_dot == key) {
1901 error("key does not contain a section: %s", key);
1902 return -CONFIG_NO_SECTION_OR_NAME;
1906 error("key does not contain variable name: %s", key);
1907 return -CONFIG_NO_SECTION_OR_NAME;
1910 baselen = last_dot - key;
1912 *baselen_ = baselen;
1915 * Validate the key and while at it, lower case it for matching.
1917 *store_key = xmalloc(strlen(key) + 1);
1920 for (i = 0; key[i]; i++) {
1921 unsigned char c = key[i];
1924 /* Leave the extended basename untouched.. */
1925 if (!dot || i > baselen) {
1926 if (!iskeychar(c) ||
1927 (i == baselen + 1 && !isalpha(c))) {
1928 error("invalid key: %s", key);
1929 goto out_free_ret_1;
1932 } else if (c == '\n') {
1933 error("invalid key (newline): %s", key);
1934 goto out_free_ret_1;
1936 (*store_key)[i] = c;
1938 (*store_key)[i] = 0;
1945 return -CONFIG_INVALID_KEY;
1949 * If value==NULL, unset in (remove from) config,
1950 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1951 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
1952 * (only add a new one)
1953 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1954 * else all matching key/values (regardless how many) are removed,
1955 * before the new pair is written.
1957 * Returns 0 on success.
1959 * This function does this:
1961 * - it locks the config file by creating ".git/config.lock"
1963 * - it then parses the config using store_aux() as validator to find
1964 * the position on the key/value pair to replace. If it is to be unset,
1965 * it must be found exactly once.
1967 * - the config file is mmap()ed and the part before the match (if any) is
1968 * written to the lock file, then the changed part and the rest.
1970 * - the config file is removed and the lock file rename()d to it.
1973 int git_config_set_multivar_in_file(const char *config_filename,
1974 const char *key, const char *value,
1975 const char *value_regex, int multi_replace)
1979 struct lock_file *lock = NULL;
1980 char *filename_buf = NULL;
1982 /* parse-key returns negative; flip the sign to feed exit(3) */
1983 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
1987 store.multi_replace = multi_replace;
1989 if (!config_filename)
1990 config_filename = filename_buf = git_pathdup("config");
1993 * The lock serves a purpose in addition to locking: the new
1994 * contents of .git/config will be written into it.
1996 lock = xcalloc(1, sizeof(struct lock_file));
1997 fd = hold_lock_file_for_update(lock, config_filename, 0);
1999 error("could not lock config file %s: %s", config_filename, strerror(errno));
2001 ret = CONFIG_NO_LOCK;
2006 * If .git/config does not exist yet, write a minimal version.
2008 in_fd = open(config_filename, O_RDONLY);
2012 if ( ENOENT != errno ) {
2013 error("opening %s: %s", config_filename,
2015 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
2018 /* if nothing to unset, error out */
2019 if (value == NULL) {
2020 ret = CONFIG_NOTHING_SET;
2024 store.key = (char *)key;
2025 if (!store_write_section(fd, key) ||
2026 !store_write_pair(fd, key, value))
2031 size_t contents_sz, copy_begin, copy_end;
2032 int i, new_line = 0;
2034 if (value_regex == NULL)
2035 store.value_regex = NULL;
2036 else if (value_regex == CONFIG_REGEX_NONE)
2037 store.value_regex = CONFIG_REGEX_NONE;
2039 if (value_regex[0] == '!') {
2040 store.do_not_match = 1;
2043 store.do_not_match = 0;
2045 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
2046 if (regcomp(store.value_regex, value_regex,
2048 error("invalid pattern: %s", value_regex);
2049 free(store.value_regex);
2050 ret = CONFIG_INVALID_PATTERN;
2055 ALLOC_GROW(store.offset, 1, store.offset_alloc);
2056 store.offset[0] = 0;
2057 store.state = START;
2061 * After this, store.offset will contain the *end* offset
2062 * of the last match, or remain at 0 if no match was found.
2063 * As a side effect, we make sure to transform only a valid
2064 * existing config file.
2066 if (git_config_from_file(store_aux, config_filename, NULL)) {
2067 error("invalid config file %s", config_filename);
2069 if (store.value_regex != NULL &&
2070 store.value_regex != CONFIG_REGEX_NONE) {
2071 regfree(store.value_regex);
2072 free(store.value_regex);
2074 ret = CONFIG_INVALID_FILE;
2079 if (store.value_regex != NULL &&
2080 store.value_regex != CONFIG_REGEX_NONE) {
2081 regfree(store.value_regex);
2082 free(store.value_regex);
2085 /* if nothing to unset, or too many matches, error out */
2086 if ((store.seen == 0 && value == NULL) ||
2087 (store.seen > 1 && multi_replace == 0)) {
2088 ret = CONFIG_NOTHING_SET;
2093 contents_sz = xsize_t(st.st_size);
2094 contents = xmmap(NULL, contents_sz, PROT_READ,
2095 MAP_PRIVATE, in_fd, 0);
2098 if (chmod(lock->filename.buf, st.st_mode & 07777) < 0) {
2099 error("chmod on %s failed: %s",
2100 lock->filename.buf, strerror(errno));
2101 ret = CONFIG_NO_WRITE;
2105 if (store.seen == 0)
2108 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2109 if (store.offset[i] == 0) {
2110 store.offset[i] = copy_end = contents_sz;
2111 } else if (store.state != KEY_SEEN) {
2112 copy_end = store.offset[i];
2114 copy_end = find_beginning_of_line(
2115 contents, contents_sz,
2116 store.offset[i]-2, &new_line);
2118 if (copy_end > 0 && contents[copy_end-1] != '\n')
2121 /* write the first part of the config */
2122 if (copy_end > copy_begin) {
2123 if (write_in_full(fd, contents + copy_begin,
2124 copy_end - copy_begin) <
2125 copy_end - copy_begin)
2128 write_str_in_full(fd, "\n") != 1)
2131 copy_begin = store.offset[i];
2134 /* write the pair (value == NULL means unset) */
2135 if (value != NULL) {
2136 if (store.state == START) {
2137 if (!store_write_section(fd, key))
2140 if (!store_write_pair(fd, key, value))
2144 /* write the rest of the config */
2145 if (copy_begin < contents_sz)
2146 if (write_in_full(fd, contents + copy_begin,
2147 contents_sz - copy_begin) <
2148 contents_sz - copy_begin)
2151 munmap(contents, contents_sz);
2154 if (commit_lock_file(lock) < 0) {
2155 error("could not commit config file %s", config_filename);
2156 ret = CONFIG_NO_WRITE;
2162 * lock is committed, so don't try to roll it back below.
2163 * NOTE: Since lockfile.c keeps a linked list of all created
2164 * lock_file structures, it isn't safe to free(lock). It's
2165 * better to just leave it hanging around.
2170 /* Invalidate the config cache */
2175 rollback_lock_file(lock);
2180 ret = write_error(lock->filename.buf);
2185 int git_config_set_multivar(const char *key, const char *value,
2186 const char *value_regex, int multi_replace)
2188 return git_config_set_multivar_in_file(NULL, key, value, value_regex,
2192 static int section_name_match (const char *buf, const char *name)
2194 int i = 0, j = 0, dot = 0;
2197 for (i = 1; buf[i] && buf[i] != ']'; i++) {
2198 if (!dot && isspace(buf[i])) {
2200 if (name[j++] != '.')
2202 for (i++; isspace(buf[i]); i++)
2208 if (buf[i] == '\\' && dot)
2210 else if (buf[i] == '"' && dot) {
2211 for (i++; isspace(buf[i]); i++)
2215 if (buf[i] != name[j++])
2218 if (buf[i] == ']' && name[j] == 0) {
2220 * We match, now just find the right length offset by
2221 * gobbling up any whitespace after it, as well
2224 for (; buf[i] && isspace(buf[i]); i++)
2231 static int section_name_is_ok(const char *name)
2233 /* Empty section names are bogus. */
2238 * Before a dot, we must be alphanumeric or dash. After the first dot,
2239 * anything goes, so we can stop checking.
2241 for (; *name && *name != '.'; name++)
2242 if (*name != '-' && !isalnum(*name))
2247 /* if new_name == NULL, the section is removed instead */
2248 int git_config_rename_section_in_file(const char *config_filename,
2249 const char *old_name, const char *new_name)
2251 int ret = 0, remove = 0;
2252 char *filename_buf = NULL;
2253 struct lock_file *lock;
2259 if (new_name && !section_name_is_ok(new_name)) {
2260 ret = error("invalid section name: %s", new_name);
2264 if (!config_filename)
2265 config_filename = filename_buf = git_pathdup("config");
2267 lock = xcalloc(1, sizeof(struct lock_file));
2268 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
2270 ret = error("could not lock config file %s", config_filename);
2274 if (!(config_file = fopen(config_filename, "rb"))) {
2275 /* no config file means nothing to rename, no error */
2276 goto unlock_and_out;
2279 fstat(fileno(config_file), &st);
2281 if (chmod(lock->filename.buf, st.st_mode & 07777) < 0) {
2282 ret = error("chmod on %s failed: %s",
2283 lock->filename.buf, strerror(errno));
2287 while (fgets(buf, sizeof(buf), config_file)) {
2291 for (i = 0; buf[i] && isspace(buf[i]); i++)
2293 if (buf[i] == '[') {
2294 /* it's a section */
2295 int offset = section_name_match(&buf[i], old_name);
2298 if (new_name == NULL) {
2302 store.baselen = strlen(new_name);
2303 if (!store_write_section(out_fd, new_name)) {
2304 ret = write_error(lock->filename.buf);
2308 * We wrote out the new section, with
2309 * a newline, now skip the old
2312 output += offset + i;
2313 if (strlen(output) > 0) {
2315 * More content means there's
2316 * a declaration to put on the
2317 * next line; indent with a
2328 length = strlen(output);
2329 if (write_in_full(out_fd, output, length) != length) {
2330 ret = write_error(lock->filename.buf);
2334 fclose(config_file);
2336 if (commit_lock_file(lock) < 0)
2337 ret = error("could not commit config file %s", config_filename);
2343 int git_config_rename_section(const char *old_name, const char *new_name)
2345 return git_config_rename_section_in_file(NULL, old_name, new_name);
2349 * Call this to report error for your variable that should not
2350 * get a boolean value (i.e. "[my] var" means "true").
2352 int config_error_nonbool(const char *var)
2354 return error("Missing value for '%s'", var);
2357 int parse_config_key(const char *var,
2358 const char *section,
2359 const char **subsection, int *subsection_len,
2362 int section_len = strlen(section);
2365 /* Does it start with "section." ? */
2366 if (!starts_with(var, section) || var[section_len] != '.')
2370 * Find the key; we don't know yet if we have a subsection, but we must
2371 * parse backwards from the end, since the subsection may have dots in
2374 dot = strrchr(var, '.');
2377 /* Did we have a subsection at all? */
2378 if (dot == var + section_len) {
2380 *subsection_len = 0;
2383 *subsection = var + section_len + 1;
2384 *subsection_len = dot - *subsection;