2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
14 #include "string-list.h"
18 struct config_source {
19 struct config_source *prev;
28 enum config_origin_type origin_type;
37 int (*do_fgetc)(struct config_source *c);
38 int (*do_ungetc)(int c, struct config_source *conf);
39 long (*do_ftell)(struct config_source *c);
43 * These variables record the "current" config source, which
44 * can be accessed by parsing callbacks.
46 * The "cf" variable will be non-NULL only when we are actually parsing a real
47 * config source (file, blob, cmdline, etc).
49 * The "current_config_kvi" variable will be non-NULL only when we are feeding
50 * cached config from a configset into a callback.
52 * They should generally never be non-NULL at the same time. If they are both
53 * NULL, then we aren't parsing anything (and depending on the function looking
54 * at the variables, it's either a bug for it to be called in the first place,
55 * or it's a function which can be reused for non-config purposes, and should
56 * fall back to some sane behavior).
58 static struct config_source *cf;
59 static struct key_value_info *current_config_kvi;
62 * Similar to the variables above, this gives access to the "scope" of the
63 * current value (repo, global, etc). For cached values, it can be found via
64 * the current_config_kvi as above. During parsing, the current value can be
65 * found in this variable. It's not part of "cf" because it transcends a single
66 * file (i.e., a file included from .git/config is still in "repo" scope).
68 static enum config_scope current_parsing_scope;
70 static int core_compression_seen;
71 static int pack_compression_seen;
72 static int zlib_compression_seen;
75 * Default config_set that contains key-value pairs from the usual set of config
76 * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
77 * config file and the global /etc/gitconfig)
79 static struct config_set the_config_set;
81 static int config_file_fgetc(struct config_source *conf)
83 return getc_unlocked(conf->u.file);
86 static int config_file_ungetc(int c, struct config_source *conf)
88 return ungetc(c, conf->u.file);
91 static long config_file_ftell(struct config_source *conf)
93 return ftell(conf->u.file);
97 static int config_buf_fgetc(struct config_source *conf)
99 if (conf->u.buf.pos < conf->u.buf.len)
100 return conf->u.buf.buf[conf->u.buf.pos++];
105 static int config_buf_ungetc(int c, struct config_source *conf)
107 if (conf->u.buf.pos > 0) {
109 if (conf->u.buf.buf[conf->u.buf.pos] != c)
110 die("BUG: config_buf can only ungetc the same character");
117 static long config_buf_ftell(struct config_source *conf)
119 return conf->u.buf.pos;
122 #define MAX_INCLUDE_DEPTH 10
123 static const char include_depth_advice[] =
124 "exceeded maximum include depth (%d) while including\n"
128 "Do you have circular includes?";
129 static int handle_path_include(const char *path, struct config_include_data *inc)
132 struct strbuf buf = STRBUF_INIT;
136 return config_error_nonbool("include.path");
138 expanded = expand_user_path(path, 0);
140 return error("could not expand include path '%s'", path);
144 * Use an absolute path as-is, but interpret relative paths
145 * based on the including config file.
147 if (!is_absolute_path(path)) {
150 if (!cf || !cf->path)
151 return error("relative config includes must come from files");
153 slash = find_last_dir_sep(cf->path);
155 strbuf_add(&buf, cf->path, slash - cf->path + 1);
156 strbuf_addstr(&buf, path);
160 if (!access_or_die(path, R_OK, 0)) {
161 if (++inc->depth > MAX_INCLUDE_DEPTH)
162 die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
164 cf->name ? cf->name :
166 ret = git_config_from_file(git_config_include, path, inc);
169 strbuf_release(&buf);
174 static int prepare_include_condition_pattern(struct strbuf *pat)
176 struct strbuf path = STRBUF_INIT;
180 expanded = expand_user_path(pat->buf, 1);
183 strbuf_addstr(pat, expanded);
187 if (pat->buf[0] == '.' && is_dir_sep(pat->buf[1])) {
190 if (!cf || !cf->path)
191 return error(_("relative config include "
192 "conditionals must come from files"));
194 strbuf_realpath(&path, cf->path, 1);
195 slash = find_last_dir_sep(path.buf);
197 die("BUG: how is this possible?");
198 strbuf_splice(pat, 0, 1, path.buf, slash - path.buf);
199 prefix = slash - path.buf + 1 /* slash */;
200 } else if (!is_absolute_path(pat->buf))
201 strbuf_insert(pat, 0, "**/", 3);
203 if (pat->len && is_dir_sep(pat->buf[pat->len - 1]))
204 strbuf_addstr(pat, "**");
206 strbuf_release(&path);
210 static int include_by_gitdir(const struct config_options *opts,
211 const char *cond, size_t cond_len, int icase)
213 struct strbuf text = STRBUF_INIT;
214 struct strbuf pattern = STRBUF_INIT;
219 git_dir = opts->git_dir;
220 else if (have_git_dir())
221 git_dir = get_git_dir();
225 strbuf_realpath(&text, git_dir, 1);
226 strbuf_add(&pattern, cond, cond_len);
227 prefix = prepare_include_condition_pattern(&pattern);
234 * perform literal matching on the prefix part so that
235 * any wildcard character in it can't create side effects.
237 if (text.len < prefix)
239 if (!icase && strncmp(pattern.buf, text.buf, prefix))
241 if (icase && strncasecmp(pattern.buf, text.buf, prefix))
245 ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
246 icase ? WM_CASEFOLD : 0, NULL);
249 strbuf_release(&pattern);
250 strbuf_release(&text);
254 static int include_condition_is_true(const struct config_options *opts,
255 const char *cond, size_t cond_len)
258 if (skip_prefix_mem(cond, cond_len, "gitdir:", &cond, &cond_len))
259 return include_by_gitdir(opts, cond, cond_len, 0);
260 else if (skip_prefix_mem(cond, cond_len, "gitdir/i:", &cond, &cond_len))
261 return include_by_gitdir(opts, cond, cond_len, 1);
263 /* unknown conditionals are always false */
267 int git_config_include(const char *var, const char *value, void *data)
269 struct config_include_data *inc = data;
270 const char *cond, *key;
275 * Pass along all values, including "include" directives; this makes it
276 * possible to query information on the includes themselves.
278 ret = inc->fn(var, value, inc->data);
282 if (!strcmp(var, "include.path"))
283 ret = handle_path_include(value, inc);
285 if (!parse_config_key(var, "includeif", &cond, &cond_len, &key) &&
286 (cond && include_condition_is_true(inc->opts, cond, cond_len)) &&
287 !strcmp(key, "path"))
288 ret = handle_path_include(value, inc);
293 void git_config_push_parameter(const char *text)
295 struct strbuf env = STRBUF_INIT;
296 const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
298 strbuf_addstr(&env, old);
299 strbuf_addch(&env, ' ');
301 sq_quote_buf(&env, text);
302 setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
303 strbuf_release(&env);
306 static inline int iskeychar(int c)
308 return isalnum(c) || c == '-';
312 * Auxiliary function to sanity-check and split the key into the section
313 * identifier and variable name.
315 * Returns 0 on success, -1 when there is an invalid character in the key and
316 * -2 if there is no section name in the key.
318 * store_key - pointer to char* which will hold a copy of the key with
319 * lowercase section and variable name
320 * baselen - pointer to int which will hold the length of the
321 * section + subsection part, can be NULL
323 static int git_config_parse_key_1(const char *key, char **store_key, int *baselen_, int quiet)
326 const char *last_dot = strrchr(key, '.');
329 * Since "key" actually contains the section name and the real
330 * key name separated by a dot, we have to know where the dot is.
333 if (last_dot == NULL || last_dot == key) {
335 error("key does not contain a section: %s", key);
336 return -CONFIG_NO_SECTION_OR_NAME;
341 error("key does not contain variable name: %s", key);
342 return -CONFIG_NO_SECTION_OR_NAME;
345 baselen = last_dot - key;
350 * Validate the key and while at it, lower case it for matching.
353 *store_key = xmallocz(strlen(key));
356 for (i = 0; key[i]; i++) {
357 unsigned char c = key[i];
360 /* Leave the extended basename untouched.. */
361 if (!dot || i > baselen) {
363 (i == baselen + 1 && !isalpha(c))) {
365 error("invalid key: %s", key);
369 } else if (c == '\n') {
371 error("invalid key (newline): %s", key);
385 return -CONFIG_INVALID_KEY;
388 int git_config_parse_key(const char *key, char **store_key, int *baselen)
390 return git_config_parse_key_1(key, store_key, baselen, 0);
393 int git_config_key_is_valid(const char *key)
395 return !git_config_parse_key_1(key, NULL, NULL, 1);
398 int git_config_parse_parameter(const char *text,
399 config_fn_t fn, void *data)
402 char *canonical_name;
403 struct strbuf **pair;
406 pair = strbuf_split_str(text, '=', 2);
408 return error("bogus config parameter: %s", text);
410 if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=') {
411 strbuf_setlen(pair[0], pair[0]->len - 1);
412 value = pair[1] ? pair[1]->buf : "";
417 strbuf_trim(pair[0]);
419 strbuf_list_free(pair);
420 return error("bogus config parameter: %s", text);
423 if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
426 ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
427 free(canonical_name);
429 strbuf_list_free(pair);
433 int git_config_from_parameters(config_fn_t fn, void *data)
435 const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
438 const char **argv = NULL;
439 int nr = 0, alloc = 0;
441 struct config_source source;
446 memset(&source, 0, sizeof(source));
448 source.origin_type = CONFIG_ORIGIN_CMDLINE;
451 /* sq_dequote will write over it */
454 if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
455 ret = error("bogus format in " CONFIG_DATA_ENVIRONMENT);
459 for (i = 0; i < nr; i++) {
460 if (git_config_parse_parameter(argv[i], fn, data) < 0) {
473 static int get_next_char(void)
475 int c = cf->do_fgetc(cf);
478 /* DOS like systems */
479 c = cf->do_fgetc(cf);
482 cf->do_ungetc(c, cf);
496 static char *parse_value(void)
498 int quote = 0, comment = 0, space = 0;
500 strbuf_reset(&cf->value);
502 int c = get_next_char();
508 return cf->value.buf;
512 if (isspace(c) && !quote) {
518 if (c == ';' || c == '#') {
523 for (; space; space--)
524 strbuf_addch(&cf->value, ' ');
539 /* Some characters escape as themselves */
542 /* Reject unknown escape sequences */
546 strbuf_addch(&cf->value, c);
553 strbuf_addch(&cf->value, c);
557 static int get_value(config_fn_t fn, void *data, struct strbuf *name)
563 /* Get the full name */
570 strbuf_addch(name, tolower(c));
573 while (c == ' ' || c == '\t')
580 value = parse_value();
585 * We already consumed the \n, but we need linenr to point to
586 * the line we just parsed during the call to fn to get
587 * accurate line number in error messages.
590 ret = fn(name->buf, value, data);
596 static int get_extended_base_var(struct strbuf *name, int c)
600 goto error_incomplete_line;
602 } while (isspace(c));
604 /* We require the format to be '[base "extension"]' */
607 strbuf_addch(name, '.');
610 int c = get_next_char();
612 goto error_incomplete_line;
618 goto error_incomplete_line;
620 strbuf_addch(name, c);
624 if (get_next_char() != ']')
627 error_incomplete_line:
632 static int get_base_var(struct strbuf *name)
635 int c = get_next_char();
641 return get_extended_base_var(name, c);
642 if (!iskeychar(c) && c != '.')
644 strbuf_addch(name, tolower(c));
648 static int git_parse_source(config_fn_t fn, void *data)
652 struct strbuf *var = &cf->var;
653 int error_return = 0;
654 char *error_msg = NULL;
656 /* U+FEFF Byte Order Mark in UTF8 */
657 const char *bomptr = utf8_bom;
660 int c = get_next_char();
661 if (bomptr && *bomptr) {
662 /* We are at the file beginning; skip UTF8-encoded BOM
663 * if present. Sane editors won't put this in on their
664 * own, but e.g. Windows Notepad will do it happily. */
665 if (c == (*bomptr & 0377)) {
669 /* Do not tolerate partial BOM. */
670 if (bomptr != utf8_bom)
672 /* No BOM at file beginning. Cool. */
682 if (comment || isspace(c))
684 if (c == '#' || c == ';') {
689 /* Reset prior to determining a new stem */
691 if (get_base_var(var) < 0 || var->len < 1)
693 strbuf_addch(var, '.');
700 * Truncate the var name back to the section header
701 * stem prior to grabbing the suffix part of the name
704 strbuf_setlen(var, baselen);
705 strbuf_addch(var, tolower(c));
706 if (get_value(fn, data, var) < 0)
710 switch (cf->origin_type) {
711 case CONFIG_ORIGIN_BLOB:
712 error_msg = xstrfmt(_("bad config line %d in blob %s"),
713 cf->linenr, cf->name);
715 case CONFIG_ORIGIN_FILE:
716 error_msg = xstrfmt(_("bad config line %d in file %s"),
717 cf->linenr, cf->name);
719 case CONFIG_ORIGIN_STDIN:
720 error_msg = xstrfmt(_("bad config line %d in standard input"),
723 case CONFIG_ORIGIN_SUBMODULE_BLOB:
724 error_msg = xstrfmt(_("bad config line %d in submodule-blob %s"),
725 cf->linenr, cf->name);
727 case CONFIG_ORIGIN_CMDLINE:
728 error_msg = xstrfmt(_("bad config line %d in command line %s"),
729 cf->linenr, cf->name);
732 error_msg = xstrfmt(_("bad config line %d in %s"),
733 cf->linenr, cf->name);
736 if (cf->die_on_error)
737 die("%s", error_msg);
739 error_return = error("%s", error_msg);
745 static int parse_unit_factor(const char *end, uintmax_t *val)
749 else if (!strcasecmp(end, "k")) {
753 else if (!strcasecmp(end, "m")) {
757 else if (!strcasecmp(end, "g")) {
758 *val *= 1024 * 1024 * 1024;
764 static int git_parse_signed(const char *value, intmax_t *ret, intmax_t max)
766 if (value && *value) {
770 uintmax_t factor = 1;
773 val = strtoimax(value, &end, 0);
776 if (!parse_unit_factor(end, &factor)) {
782 if (uval > max || labs(val) > uval) {
794 static int git_parse_unsigned(const char *value, uintmax_t *ret, uintmax_t max)
796 if (value && *value) {
802 val = strtoumax(value, &end, 0);
806 if (!parse_unit_factor(end, &val)) {
810 if (val > max || oldval > val) {
821 static int git_parse_int(const char *value, int *ret)
824 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int)))
830 static int git_parse_int64(const char *value, int64_t *ret)
833 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(int64_t)))
839 int git_parse_ulong(const char *value, unsigned long *ret)
842 if (!git_parse_unsigned(value, &tmp, maximum_unsigned_value_of_type(long)))
848 static int git_parse_ssize_t(const char *value, ssize_t *ret)
851 if (!git_parse_signed(value, &tmp, maximum_signed_value_of_type(ssize_t)))
858 static void die_bad_number(const char *name, const char *value)
860 const char * error_type = (errno == ERANGE)? _("out of range"):_("invalid unit");
865 if (!(cf && cf->name))
866 die(_("bad numeric config value '%s' for '%s': %s"),
867 value, name, error_type);
869 switch (cf->origin_type) {
870 case CONFIG_ORIGIN_BLOB:
871 die(_("bad numeric config value '%s' for '%s' in blob %s: %s"),
872 value, name, cf->name, error_type);
873 case CONFIG_ORIGIN_FILE:
874 die(_("bad numeric config value '%s' for '%s' in file %s: %s"),
875 value, name, cf->name, error_type);
876 case CONFIG_ORIGIN_STDIN:
877 die(_("bad numeric config value '%s' for '%s' in standard input: %s"),
878 value, name, error_type);
879 case CONFIG_ORIGIN_SUBMODULE_BLOB:
880 die(_("bad numeric config value '%s' for '%s' in submodule-blob %s: %s"),
881 value, name, cf->name, error_type);
882 case CONFIG_ORIGIN_CMDLINE:
883 die(_("bad numeric config value '%s' for '%s' in command line %s: %s"),
884 value, name, cf->name, error_type);
886 die(_("bad numeric config value '%s' for '%s' in %s: %s"),
887 value, name, cf->name, error_type);
891 int git_config_int(const char *name, const char *value)
894 if (!git_parse_int(value, &ret))
895 die_bad_number(name, value);
899 int64_t git_config_int64(const char *name, const char *value)
902 if (!git_parse_int64(value, &ret))
903 die_bad_number(name, value);
907 unsigned long git_config_ulong(const char *name, const char *value)
910 if (!git_parse_ulong(value, &ret))
911 die_bad_number(name, value);
915 ssize_t git_config_ssize_t(const char *name, const char *value)
918 if (!git_parse_ssize_t(value, &ret))
919 die_bad_number(name, value);
923 int git_parse_maybe_bool(const char *value)
929 if (!strcasecmp(value, "true")
930 || !strcasecmp(value, "yes")
931 || !strcasecmp(value, "on"))
933 if (!strcasecmp(value, "false")
934 || !strcasecmp(value, "no")
935 || !strcasecmp(value, "off"))
940 int git_config_maybe_bool(const char *name, const char *value)
942 int v = git_parse_maybe_bool(value);
945 if (git_parse_int(value, &v))
950 int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
952 int v = git_parse_maybe_bool(value);
958 return git_config_int(name, value);
961 int git_config_bool(const char *name, const char *value)
964 return !!git_config_bool_or_int(name, value, &discard);
967 int git_config_string(const char **dest, const char *var, const char *value)
970 return config_error_nonbool(var);
971 *dest = xstrdup(value);
975 int git_config_pathname(const char **dest, const char *var, const char *value)
978 return config_error_nonbool(var);
979 *dest = expand_user_path(value, 0);
981 die(_("failed to expand user dir in: '%s'"), value);
985 static int git_default_core_config(const char *var, const char *value)
987 /* This needs a better name */
988 if (!strcmp(var, "core.filemode")) {
989 trust_executable_bit = git_config_bool(var, value);
992 if (!strcmp(var, "core.trustctime")) {
993 trust_ctime = git_config_bool(var, value);
996 if (!strcmp(var, "core.checkstat")) {
997 if (!strcasecmp(value, "default"))
999 else if (!strcasecmp(value, "minimal"))
1003 if (!strcmp(var, "core.quotepath")) {
1004 quote_path_fully = git_config_bool(var, value);
1008 if (!strcmp(var, "core.symlinks")) {
1009 has_symlinks = git_config_bool(var, value);
1013 if (!strcmp(var, "core.ignorecase")) {
1014 ignore_case = git_config_bool(var, value);
1018 if (!strcmp(var, "core.attributesfile"))
1019 return git_config_pathname(&git_attributes_file, var, value);
1021 if (!strcmp(var, "core.hookspath"))
1022 return git_config_pathname(&git_hooks_path, var, value);
1024 if (!strcmp(var, "core.bare")) {
1025 is_bare_repository_cfg = git_config_bool(var, value);
1029 if (!strcmp(var, "core.ignorestat")) {
1030 assume_unchanged = git_config_bool(var, value);
1034 if (!strcmp(var, "core.prefersymlinkrefs")) {
1035 prefer_symlink_refs = git_config_bool(var, value);
1039 if (!strcmp(var, "core.logallrefupdates")) {
1040 if (value && !strcasecmp(value, "always"))
1041 log_all_ref_updates = LOG_REFS_ALWAYS;
1042 else if (git_config_bool(var, value))
1043 log_all_ref_updates = LOG_REFS_NORMAL;
1045 log_all_ref_updates = LOG_REFS_NONE;
1049 if (!strcmp(var, "core.warnambiguousrefs")) {
1050 warn_ambiguous_refs = git_config_bool(var, value);
1054 if (!strcmp(var, "core.abbrev")) {
1056 return config_error_nonbool(var);
1057 if (!strcasecmp(value, "auto"))
1058 default_abbrev = -1;
1060 int abbrev = git_config_int(var, value);
1061 if (abbrev < minimum_abbrev || abbrev > 40)
1062 return error("abbrev length out of range: %d", abbrev);
1063 default_abbrev = abbrev;
1068 if (!strcmp(var, "core.disambiguate"))
1069 return set_disambiguate_hint_config(var, value);
1071 if (!strcmp(var, "core.loosecompression")) {
1072 int level = git_config_int(var, value);
1074 level = Z_DEFAULT_COMPRESSION;
1075 else if (level < 0 || level > Z_BEST_COMPRESSION)
1076 die(_("bad zlib compression level %d"), level);
1077 zlib_compression_level = level;
1078 zlib_compression_seen = 1;
1082 if (!strcmp(var, "core.compression")) {
1083 int level = git_config_int(var, value);
1085 level = Z_DEFAULT_COMPRESSION;
1086 else if (level < 0 || level > Z_BEST_COMPRESSION)
1087 die(_("bad zlib compression level %d"), level);
1088 core_compression_level = level;
1089 core_compression_seen = 1;
1090 if (!zlib_compression_seen)
1091 zlib_compression_level = level;
1092 if (!pack_compression_seen)
1093 pack_compression_level = level;
1097 if (!strcmp(var, "core.packedgitwindowsize")) {
1098 int pgsz_x2 = getpagesize() * 2;
1099 packed_git_window_size = git_config_ulong(var, value);
1101 /* This value must be multiple of (pagesize * 2) */
1102 packed_git_window_size /= pgsz_x2;
1103 if (packed_git_window_size < 1)
1104 packed_git_window_size = 1;
1105 packed_git_window_size *= pgsz_x2;
1109 if (!strcmp(var, "core.bigfilethreshold")) {
1110 big_file_threshold = git_config_ulong(var, value);
1114 if (!strcmp(var, "core.packedgitlimit")) {
1115 packed_git_limit = git_config_ulong(var, value);
1119 if (!strcmp(var, "core.deltabasecachelimit")) {
1120 delta_base_cache_limit = git_config_ulong(var, value);
1124 if (!strcmp(var, "core.autocrlf")) {
1125 if (value && !strcasecmp(value, "input")) {
1126 auto_crlf = AUTO_CRLF_INPUT;
1129 auto_crlf = git_config_bool(var, value);
1133 if (!strcmp(var, "core.safecrlf")) {
1134 if (value && !strcasecmp(value, "warn")) {
1135 safe_crlf = SAFE_CRLF_WARN;
1138 safe_crlf = git_config_bool(var, value);
1142 if (!strcmp(var, "core.eol")) {
1143 if (value && !strcasecmp(value, "lf"))
1145 else if (value && !strcasecmp(value, "crlf"))
1146 core_eol = EOL_CRLF;
1147 else if (value && !strcasecmp(value, "native"))
1148 core_eol = EOL_NATIVE;
1150 core_eol = EOL_UNSET;
1154 if (!strcmp(var, "core.notesref")) {
1155 notes_ref_name = xstrdup(value);
1159 if (!strcmp(var, "core.editor"))
1160 return git_config_string(&editor_program, var, value);
1162 if (!strcmp(var, "core.commentchar")) {
1164 return config_error_nonbool(var);
1165 else if (!strcasecmp(value, "auto"))
1166 auto_comment_line_char = 1;
1167 else if (value[0] && !value[1]) {
1168 comment_line_char = value[0];
1169 auto_comment_line_char = 0;
1171 return error("core.commentChar should only be one character");
1175 if (!strcmp(var, "core.askpass"))
1176 return git_config_string(&askpass_program, var, value);
1178 if (!strcmp(var, "core.excludesfile"))
1179 return git_config_pathname(&excludes_file, var, value);
1181 if (!strcmp(var, "core.whitespace")) {
1183 return config_error_nonbool(var);
1184 whitespace_rule_cfg = parse_whitespace_rule(value);
1188 if (!strcmp(var, "core.fsyncobjectfiles")) {
1189 fsync_object_files = git_config_bool(var, value);
1193 if (!strcmp(var, "core.preloadindex")) {
1194 core_preload_index = git_config_bool(var, value);
1198 if (!strcmp(var, "core.createobject")) {
1199 if (!strcmp(value, "rename"))
1200 object_creation_mode = OBJECT_CREATION_USES_RENAMES;
1201 else if (!strcmp(value, "link"))
1202 object_creation_mode = OBJECT_CREATION_USES_HARDLINKS;
1204 die(_("invalid mode for object creation: %s"), value);
1208 if (!strcmp(var, "core.sparsecheckout")) {
1209 core_apply_sparse_checkout = git_config_bool(var, value);
1213 if (!strcmp(var, "core.precomposeunicode")) {
1214 precomposed_unicode = git_config_bool(var, value);
1218 if (!strcmp(var, "core.protecthfs")) {
1219 protect_hfs = git_config_bool(var, value);
1223 if (!strcmp(var, "core.protectntfs")) {
1224 protect_ntfs = git_config_bool(var, value);
1228 if (!strcmp(var, "core.hidedotfiles")) {
1229 if (value && !strcasecmp(value, "dotgitonly"))
1230 hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
1232 hide_dotfiles = git_config_bool(var, value);
1236 /* Add other config variables here and to Documentation/config.txt. */
1240 static int git_default_i18n_config(const char *var, const char *value)
1242 if (!strcmp(var, "i18n.commitencoding"))
1243 return git_config_string(&git_commit_encoding, var, value);
1245 if (!strcmp(var, "i18n.logoutputencoding"))
1246 return git_config_string(&git_log_output_encoding, var, value);
1248 /* Add other config variables here and to Documentation/config.txt. */
1252 static int git_default_branch_config(const char *var, const char *value)
1254 if (!strcmp(var, "branch.autosetupmerge")) {
1255 if (value && !strcasecmp(value, "always")) {
1256 git_branch_track = BRANCH_TRACK_ALWAYS;
1259 git_branch_track = git_config_bool(var, value);
1262 if (!strcmp(var, "branch.autosetuprebase")) {
1264 return config_error_nonbool(var);
1265 else if (!strcmp(value, "never"))
1266 autorebase = AUTOREBASE_NEVER;
1267 else if (!strcmp(value, "local"))
1268 autorebase = AUTOREBASE_LOCAL;
1269 else if (!strcmp(value, "remote"))
1270 autorebase = AUTOREBASE_REMOTE;
1271 else if (!strcmp(value, "always"))
1272 autorebase = AUTOREBASE_ALWAYS;
1274 return error("malformed value for %s", var);
1278 /* Add other config variables here and to Documentation/config.txt. */
1282 static int git_default_push_config(const char *var, const char *value)
1284 if (!strcmp(var, "push.default")) {
1286 return config_error_nonbool(var);
1287 else if (!strcmp(value, "nothing"))
1288 push_default = PUSH_DEFAULT_NOTHING;
1289 else if (!strcmp(value, "matching"))
1290 push_default = PUSH_DEFAULT_MATCHING;
1291 else if (!strcmp(value, "simple"))
1292 push_default = PUSH_DEFAULT_SIMPLE;
1293 else if (!strcmp(value, "upstream"))
1294 push_default = PUSH_DEFAULT_UPSTREAM;
1295 else if (!strcmp(value, "tracking")) /* deprecated */
1296 push_default = PUSH_DEFAULT_UPSTREAM;
1297 else if (!strcmp(value, "current"))
1298 push_default = PUSH_DEFAULT_CURRENT;
1300 error("malformed value for %s: %s", var, value);
1301 return error("Must be one of nothing, matching, simple, "
1302 "upstream or current.");
1307 /* Add other config variables here and to Documentation/config.txt. */
1311 static int git_default_mailmap_config(const char *var, const char *value)
1313 if (!strcmp(var, "mailmap.file"))
1314 return git_config_pathname(&git_mailmap_file, var, value);
1315 if (!strcmp(var, "mailmap.blob"))
1316 return git_config_string(&git_mailmap_blob, var, value);
1318 /* Add other config variables here and to Documentation/config.txt. */
1322 int git_default_config(const char *var, const char *value, void *dummy)
1324 if (starts_with(var, "core."))
1325 return git_default_core_config(var, value);
1327 if (starts_with(var, "user."))
1328 return git_ident_config(var, value, dummy);
1330 if (starts_with(var, "i18n."))
1331 return git_default_i18n_config(var, value);
1333 if (starts_with(var, "branch."))
1334 return git_default_branch_config(var, value);
1336 if (starts_with(var, "push."))
1337 return git_default_push_config(var, value);
1339 if (starts_with(var, "mailmap."))
1340 return git_default_mailmap_config(var, value);
1342 if (starts_with(var, "advice."))
1343 return git_default_advice_config(var, value);
1345 if (!strcmp(var, "pager.color") || !strcmp(var, "color.pager")) {
1346 pager_use_color = git_config_bool(var,value);
1350 if (!strcmp(var, "pack.packsizelimit")) {
1351 pack_size_limit_cfg = git_config_ulong(var, value);
1355 if (!strcmp(var, "pack.compression")) {
1356 int level = git_config_int(var, value);
1358 level = Z_DEFAULT_COMPRESSION;
1359 else if (level < 0 || level > Z_BEST_COMPRESSION)
1360 die(_("bad pack compression level %d"), level);
1361 pack_compression_level = level;
1362 pack_compression_seen = 1;
1366 /* Add other config variables here and to Documentation/config.txt. */
1371 * All source specific fields in the union, die_on_error, name and the callbacks
1372 * fgetc, ungetc, ftell of top need to be initialized before calling
1375 static int do_config_from(struct config_source *top, config_fn_t fn, void *data)
1379 /* push config-file parsing state stack */
1383 strbuf_init(&top->value, 1024);
1384 strbuf_init(&top->var, 1024);
1387 ret = git_parse_source(fn, data);
1389 /* pop config-file parsing state stack */
1390 strbuf_release(&top->value);
1391 strbuf_release(&top->var);
1397 static int do_config_from_file(config_fn_t fn,
1398 const enum config_origin_type origin_type,
1399 const char *name, const char *path, FILE *f,
1402 struct config_source top;
1405 top.origin_type = origin_type;
1408 top.die_on_error = 1;
1409 top.do_fgetc = config_file_fgetc;
1410 top.do_ungetc = config_file_ungetc;
1411 top.do_ftell = config_file_ftell;
1413 return do_config_from(&top, fn, data);
1416 static int git_config_from_stdin(config_fn_t fn, void *data)
1418 return do_config_from_file(fn, CONFIG_ORIGIN_STDIN, "", NULL, stdin, data);
1421 int git_config_from_file(config_fn_t fn, const char *filename, void *data)
1426 f = fopen(filename, "r");
1429 ret = do_config_from_file(fn, CONFIG_ORIGIN_FILE, filename, filename, f, data);
1436 int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_type,
1437 const char *name, const char *buf, size_t len, void *data)
1439 struct config_source top;
1441 top.u.buf.buf = buf;
1442 top.u.buf.len = len;
1444 top.origin_type = origin_type;
1447 top.die_on_error = 0;
1448 top.do_fgetc = config_buf_fgetc;
1449 top.do_ungetc = config_buf_ungetc;
1450 top.do_ftell = config_buf_ftell;
1452 return do_config_from(&top, fn, data);
1455 int git_config_from_blob_sha1(config_fn_t fn,
1457 const unsigned char *sha1,
1460 enum object_type type;
1465 buf = read_sha1_file(sha1, &type, &size);
1467 return error("unable to load config blob object '%s'", name);
1468 if (type != OBJ_BLOB) {
1470 return error("reference '%s' does not point to a blob", name);
1473 ret = git_config_from_mem(fn, CONFIG_ORIGIN_BLOB, name, buf, size, data);
1479 static int git_config_from_blob_ref(config_fn_t fn,
1483 unsigned char sha1[20];
1485 if (get_sha1(name, sha1) < 0)
1486 return error("unable to resolve config blob '%s'", name);
1487 return git_config_from_blob_sha1(fn, name, sha1, data);
1490 const char *git_etc_gitconfig(void)
1492 static const char *system_wide;
1494 system_wide = system_path(ETC_GITCONFIG);
1499 * Parse environment variable 'k' as a boolean (in various
1500 * possible spellings); if missing, use the default value 'def'.
1502 int git_env_bool(const char *k, int def)
1504 const char *v = getenv(k);
1505 return v ? git_config_bool(k, v) : def;
1509 * Parse environment variable 'k' as ulong with possibly a unit
1510 * suffix; if missing, use the default value 'val'.
1512 unsigned long git_env_ulong(const char *k, unsigned long val)
1514 const char *v = getenv(k);
1515 if (v && !git_parse_ulong(v, &val))
1516 die("failed to parse %s", k);
1520 int git_config_system(void)
1522 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
1525 static int do_git_config_sequence(const struct config_options *opts,
1526 config_fn_t fn, void *data)
1529 char *xdg_config = xdg_config_home("config");
1530 char *user_config = expand_user_path("~/.gitconfig", 0);
1534 repo_config = mkpathdup("%s/config", opts->git_dir);
1535 else if (have_git_dir())
1536 repo_config = git_pathdup("config");
1540 current_parsing_scope = CONFIG_SCOPE_SYSTEM;
1541 if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
1542 ret += git_config_from_file(fn, git_etc_gitconfig(),
1545 current_parsing_scope = CONFIG_SCOPE_GLOBAL;
1546 if (xdg_config && !access_or_die(xdg_config, R_OK, ACCESS_EACCES_OK))
1547 ret += git_config_from_file(fn, xdg_config, data);
1549 if (user_config && !access_or_die(user_config, R_OK, ACCESS_EACCES_OK))
1550 ret += git_config_from_file(fn, user_config, data);
1552 current_parsing_scope = CONFIG_SCOPE_REPO;
1553 if (repo_config && !access_or_die(repo_config, R_OK, 0))
1554 ret += git_config_from_file(fn, repo_config, data);
1556 current_parsing_scope = CONFIG_SCOPE_CMDLINE;
1557 if (git_config_from_parameters(fn, data) < 0)
1558 die(_("unable to parse command-line config"));
1560 current_parsing_scope = CONFIG_SCOPE_UNKNOWN;
1567 int git_config_with_options(config_fn_t fn, void *data,
1568 struct git_config_source *config_source,
1569 const struct config_options *opts)
1571 struct config_include_data inc = CONFIG_INCLUDE_INIT;
1573 if (opts->respect_includes) {
1577 fn = git_config_include;
1582 * If we have a specific filename, use it. Otherwise, follow the
1583 * regular lookup sequence.
1585 if (config_source && config_source->use_stdin)
1586 return git_config_from_stdin(fn, data);
1587 else if (config_source && config_source->file)
1588 return git_config_from_file(fn, config_source->file, data);
1589 else if (config_source && config_source->blob)
1590 return git_config_from_blob_ref(fn, config_source->blob, data);
1592 return do_git_config_sequence(opts, fn, data);
1595 static void git_config_raw(config_fn_t fn, void *data)
1597 struct config_options opts = {0};
1599 opts.respect_includes = 1;
1600 if (git_config_with_options(fn, data, NULL, &opts) < 0)
1602 * git_config_with_options() normally returns only
1603 * zero, as most errors are fatal, and
1604 * non-fatal potential errors are guarded by "if"
1605 * statements that are entered only when no error is
1608 * If we ever encounter a non-fatal error, it means
1609 * something went really wrong and we should stop
1612 die(_("unknown error occurred while reading the configuration files"));
1615 static void configset_iter(struct config_set *cs, config_fn_t fn, void *data)
1618 struct string_list *values;
1619 struct config_set_element *entry;
1620 struct configset_list *list = &cs->list;
1622 for (i = 0; i < list->nr; i++) {
1623 entry = list->items[i].e;
1624 value_index = list->items[i].value_index;
1625 values = &entry->value_list;
1627 current_config_kvi = values->items[value_index].util;
1629 if (fn(entry->key, values->items[value_index].string, data) < 0)
1630 git_die_config_linenr(entry->key,
1631 current_config_kvi->filename,
1632 current_config_kvi->linenr);
1634 current_config_kvi = NULL;
1638 void read_early_config(config_fn_t cb, void *data)
1640 struct config_options opts = {0};
1641 struct strbuf buf = STRBUF_INIT;
1643 opts.respect_includes = 1;
1646 opts.git_dir = get_git_dir();
1648 * When setup_git_directory() was not yet asked to discover the
1649 * GIT_DIR, we ask discover_git_directory() to figure out whether there
1650 * is any repository config we should use (but unlike
1651 * setup_git_directory_gently(), no global state is changed, most
1652 * notably, the current working directory is still the same after the
1655 else if (discover_git_directory(&buf))
1656 opts.git_dir = buf.buf;
1658 git_config_with_options(cb, data, NULL, &opts);
1660 strbuf_release(&buf);
1663 static void git_config_check_init(void);
1665 void git_config(config_fn_t fn, void *data)
1667 git_config_check_init();
1668 configset_iter(&the_config_set, fn, data);
1671 static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
1673 struct config_set_element k;
1674 struct config_set_element *found_entry;
1675 char *normalized_key;
1677 * `key` may come from the user, so normalize it before using it
1678 * for querying entries from the hashmap.
1680 if (git_config_parse_key(key, &normalized_key, NULL))
1683 hashmap_entry_init(&k, strhash(normalized_key));
1684 k.key = normalized_key;
1685 found_entry = hashmap_get(&cs->config_hash, &k, NULL);
1686 free(normalized_key);
1690 static int configset_add_value(struct config_set *cs, const char *key, const char *value)
1692 struct config_set_element *e;
1693 struct string_list_item *si;
1694 struct configset_list_item *l_item;
1695 struct key_value_info *kv_info = xmalloc(sizeof(*kv_info));
1697 e = configset_find_element(cs, key);
1699 * Since the keys are being fed by git_config*() callback mechanism, they
1700 * are already normalized. So simply add them without any further munging.
1703 e = xmalloc(sizeof(*e));
1704 hashmap_entry_init(e, strhash(key));
1705 e->key = xstrdup(key);
1706 string_list_init(&e->value_list, 1);
1707 hashmap_add(&cs->config_hash, e);
1709 si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
1711 ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
1712 l_item = &cs->list.items[cs->list.nr++];
1714 l_item->value_index = e->value_list.nr - 1;
1717 die("BUG: configset_add_value has no source");
1719 kv_info->filename = strintern(cf->name);
1720 kv_info->linenr = cf->linenr;
1721 kv_info->origin_type = cf->origin_type;
1723 /* for values read from `git_config_from_parameters()` */
1724 kv_info->filename = NULL;
1725 kv_info->linenr = -1;
1726 kv_info->origin_type = CONFIG_ORIGIN_CMDLINE;
1728 kv_info->scope = current_parsing_scope;
1734 static int config_set_element_cmp(const struct config_set_element *e1,
1735 const struct config_set_element *e2, const void *unused)
1737 return strcmp(e1->key, e2->key);
1740 void git_configset_init(struct config_set *cs)
1742 hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
1743 cs->hash_initialized = 1;
1746 cs->list.items = NULL;
1749 void git_configset_clear(struct config_set *cs)
1751 struct config_set_element *entry;
1752 struct hashmap_iter iter;
1753 if (!cs->hash_initialized)
1756 hashmap_iter_init(&cs->config_hash, &iter);
1757 while ((entry = hashmap_iter_next(&iter))) {
1759 string_list_clear(&entry->value_list, 1);
1761 hashmap_free(&cs->config_hash, 1);
1762 cs->hash_initialized = 0;
1763 free(cs->list.items);
1766 cs->list.items = NULL;
1769 static int config_set_callback(const char *key, const char *value, void *cb)
1771 struct config_set *cs = cb;
1772 configset_add_value(cs, key, value);
1776 int git_configset_add_file(struct config_set *cs, const char *filename)
1778 return git_config_from_file(config_set_callback, filename, cs);
1781 int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
1783 const struct string_list *values = NULL;
1785 * Follows "last one wins" semantic, i.e., if there are multiple matches for the
1786 * queried key in the files of the configset, the value returned will be the last
1787 * value in the value list for that key.
1789 values = git_configset_get_value_multi(cs, key);
1793 assert(values->nr > 0);
1794 *value = values->items[values->nr - 1].string;
1798 const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
1800 struct config_set_element *e = configset_find_element(cs, key);
1801 return e ? &e->value_list : NULL;
1804 int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
1807 if (!git_configset_get_value(cs, key, &value))
1808 return git_config_string(dest, key, value);
1813 int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
1815 return git_configset_get_string_const(cs, key, (const char **)dest);
1818 int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
1821 if (!git_configset_get_value(cs, key, &value)) {
1822 *dest = git_config_int(key, value);
1828 int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
1831 if (!git_configset_get_value(cs, key, &value)) {
1832 *dest = git_config_ulong(key, value);
1838 int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
1841 if (!git_configset_get_value(cs, key, &value)) {
1842 *dest = git_config_bool(key, value);
1848 int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
1849 int *is_bool, int *dest)
1852 if (!git_configset_get_value(cs, key, &value)) {
1853 *dest = git_config_bool_or_int(key, value, is_bool);
1859 int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
1862 if (!git_configset_get_value(cs, key, &value)) {
1863 *dest = git_config_maybe_bool(key, value);
1871 int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
1874 if (!git_configset_get_value(cs, key, &value))
1875 return git_config_pathname(dest, key, value);
1880 static void git_config_check_init(void)
1882 if (the_config_set.hash_initialized)
1884 git_configset_init(&the_config_set);
1885 git_config_raw(config_set_callback, &the_config_set);
1888 void git_config_clear(void)
1890 if (!the_config_set.hash_initialized)
1892 git_configset_clear(&the_config_set);
1895 int git_config_get_value(const char *key, const char **value)
1897 git_config_check_init();
1898 return git_configset_get_value(&the_config_set, key, value);
1901 const struct string_list *git_config_get_value_multi(const char *key)
1903 git_config_check_init();
1904 return git_configset_get_value_multi(&the_config_set, key);
1907 int git_config_get_string_const(const char *key, const char **dest)
1910 git_config_check_init();
1911 ret = git_configset_get_string_const(&the_config_set, key, dest);
1913 git_die_config(key, NULL);
1917 int git_config_get_string(const char *key, char **dest)
1919 git_config_check_init();
1920 return git_config_get_string_const(key, (const char **)dest);
1923 int git_config_get_int(const char *key, int *dest)
1925 git_config_check_init();
1926 return git_configset_get_int(&the_config_set, key, dest);
1929 int git_config_get_ulong(const char *key, unsigned long *dest)
1931 git_config_check_init();
1932 return git_configset_get_ulong(&the_config_set, key, dest);
1935 int git_config_get_bool(const char *key, int *dest)
1937 git_config_check_init();
1938 return git_configset_get_bool(&the_config_set, key, dest);
1941 int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
1943 git_config_check_init();
1944 return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
1947 int git_config_get_maybe_bool(const char *key, int *dest)
1949 git_config_check_init();
1950 return git_configset_get_maybe_bool(&the_config_set, key, dest);
1953 int git_config_get_pathname(const char *key, const char **dest)
1956 git_config_check_init();
1957 ret = git_configset_get_pathname(&the_config_set, key, dest);
1959 git_die_config(key, NULL);
1963 int git_config_get_expiry(const char *key, const char **output)
1965 int ret = git_config_get_string_const(key, output);
1968 if (strcmp(*output, "now")) {
1969 unsigned long now = approxidate("now");
1970 if (approxidate(*output) >= now)
1971 git_die_config(key, _("Invalid %s: '%s'"), key, *output);
1976 int git_config_get_untracked_cache(void)
1981 /* Hack for test programs like test-dump-untracked-cache */
1982 if (ignore_untracked_cache_config)
1985 if (!git_config_get_maybe_bool("core.untrackedcache", &val))
1988 if (!git_config_get_value("core.untrackedcache", &v)) {
1989 if (!strcasecmp(v, "keep"))
1992 error(_("unknown core.untrackedCache value '%s'; "
1993 "using 'keep' default value"), v);
1997 return -1; /* default value */
2000 int git_config_get_split_index(void)
2004 if (!git_config_get_maybe_bool("core.splitindex", &val))
2007 return -1; /* default value */
2010 int git_config_get_max_percent_split_change(void)
2014 if (!git_config_get_int("splitindex.maxpercentchange", &val)) {
2015 if (0 <= val && val <= 100)
2018 return error(_("splitIndex.maxPercentChange value '%d' "
2019 "should be between 0 and 100"), val);
2022 return -1; /* default value */
2026 void git_die_config_linenr(const char *key, const char *filename, int linenr)
2029 die(_("unable to parse '%s' from command-line config"), key);
2031 die(_("bad config variable '%s' in file '%s' at line %d"),
2032 key, filename, linenr);
2035 NORETURN __attribute__((format(printf, 2, 3)))
2036 void git_die_config(const char *key, const char *err, ...)
2038 const struct string_list *values;
2039 struct key_value_info *kv_info;
2043 va_start(params, err);
2044 vreportf("error: ", err, params);
2047 values = git_config_get_value_multi(key);
2048 kv_info = values->items[values->nr - 1].util;
2049 git_die_config_linenr(key, kv_info->filename, kv_info->linenr);
2053 * Find all the stuff for git_config_set() below.
2060 regex_t *value_regex;
2063 unsigned int offset_alloc;
2064 enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state;
2068 static int matches(const char *key, const char *value)
2070 if (strcmp(key, store.key))
2071 return 0; /* not ours */
2072 if (!store.value_regex)
2073 return 1; /* always matches */
2074 if (store.value_regex == CONFIG_REGEX_NONE)
2075 return 0; /* never matches */
2077 return store.do_not_match ^
2078 (value && !regexec(store.value_regex, value, 0, NULL, 0));
2081 static int store_aux(const char *key, const char *value, void *cb)
2086 switch (store.state) {
2088 if (matches(key, value)) {
2089 if (store.seen == 1 && store.multi_replace == 0) {
2090 warning(_("%s has multiple values"), key);
2093 ALLOC_GROW(store.offset, store.seen + 1,
2094 store.offset_alloc);
2096 store.offset[store.seen] = cf->do_ftell(cf);
2102 * What we are looking for is in store.key (both
2103 * section and var), and its section part is baselen
2104 * long. We found key (again, both section and var).
2105 * We would want to know if this key is in the same
2106 * section as what we are looking for. We already
2107 * know we are in the same section as what should
2110 ep = strrchr(key, '.');
2111 section_len = ep - key;
2113 if ((section_len != store.baselen) ||
2114 memcmp(key, store.key, section_len+1)) {
2115 store.state = SECTION_END_SEEN;
2120 * Do not increment matches: this is no match, but we
2121 * just made sure we are in the desired section.
2123 ALLOC_GROW(store.offset, store.seen + 1,
2124 store.offset_alloc);
2125 store.offset[store.seen] = cf->do_ftell(cf);
2127 case SECTION_END_SEEN:
2129 if (matches(key, value)) {
2130 ALLOC_GROW(store.offset, store.seen + 1,
2131 store.offset_alloc);
2132 store.offset[store.seen] = cf->do_ftell(cf);
2133 store.state = KEY_SEEN;
2136 if (strrchr(key, '.') - key == store.baselen &&
2137 !strncmp(key, store.key, store.baselen)) {
2138 store.state = SECTION_SEEN;
2139 ALLOC_GROW(store.offset,
2141 store.offset_alloc);
2142 store.offset[store.seen] = cf->do_ftell(cf);
2149 static int write_error(const char *filename)
2151 error("failed to write new configuration file %s", filename);
2153 /* Same error code as "failed to rename". */
2157 static int store_write_section(int fd, const char *key)
2161 struct strbuf sb = STRBUF_INIT;
2163 dot = memchr(key, '.', store.baselen);
2165 strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key);
2166 for (i = dot - key + 1; i < store.baselen; i++) {
2167 if (key[i] == '"' || key[i] == '\\')
2168 strbuf_addch(&sb, '\\');
2169 strbuf_addch(&sb, key[i]);
2171 strbuf_addstr(&sb, "\"]\n");
2173 strbuf_addf(&sb, "[%.*s]\n", store.baselen, key);
2176 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2177 strbuf_release(&sb);
2182 static int store_write_pair(int fd, const char *key, const char *value)
2185 int length = strlen(key + store.baselen + 1);
2186 const char *quote = "";
2187 struct strbuf sb = STRBUF_INIT;
2190 * Check to see if the value needs to be surrounded with a dq pair.
2191 * Note that problematic characters are always backslash-quoted; this
2192 * check is about not losing leading or trailing SP and strings that
2193 * follow beginning-of-comment characters (i.e. ';' and '#') by the
2194 * configuration parser.
2196 if (value[0] == ' ')
2198 for (i = 0; value[i]; i++)
2199 if (value[i] == ';' || value[i] == '#')
2201 if (i && value[i - 1] == ' ')
2204 strbuf_addf(&sb, "\t%.*s = %s",
2205 length, key + store.baselen + 1, quote);
2207 for (i = 0; value[i]; i++)
2210 strbuf_addstr(&sb, "\\n");
2213 strbuf_addstr(&sb, "\\t");
2217 strbuf_addch(&sb, '\\');
2219 strbuf_addch(&sb, value[i]);
2222 strbuf_addf(&sb, "%s\n", quote);
2224 success = write_in_full(fd, sb.buf, sb.len) == sb.len;
2225 strbuf_release(&sb);
2230 static ssize_t find_beginning_of_line(const char *contents, size_t size,
2231 size_t offset_, int *found_bracket)
2233 size_t equal_offset = size, bracket_offset = size;
2237 for (offset = offset_-2; offset > 0
2238 && contents[offset] != '\n'; offset--)
2239 switch (contents[offset]) {
2240 case '=': equal_offset = offset; break;
2241 case ']': bracket_offset = offset; break;
2243 if (offset > 0 && contents[offset-1] == '\\') {
2247 if (bracket_offset < equal_offset) {
2249 offset = bracket_offset+1;
2256 int git_config_set_in_file_gently(const char *config_filename,
2257 const char *key, const char *value)
2259 return git_config_set_multivar_in_file_gently(config_filename, key, value, NULL, 0);
2262 void git_config_set_in_file(const char *config_filename,
2263 const char *key, const char *value)
2265 git_config_set_multivar_in_file(config_filename, key, value, NULL, 0);
2268 int git_config_set_gently(const char *key, const char *value)
2270 return git_config_set_multivar_gently(key, value, NULL, 0);
2273 void git_config_set(const char *key, const char *value)
2275 git_config_set_multivar(key, value, NULL, 0);
2279 * If value==NULL, unset in (remove from) config,
2280 * if value_regex!=NULL, disregard key/value pairs where value does not match.
2281 * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
2282 * (only add a new one)
2283 * if multi_replace==0, nothing, or only one matching key/value is replaced,
2284 * else all matching key/values (regardless how many) are removed,
2285 * before the new pair is written.
2287 * Returns 0 on success.
2289 * This function does this:
2291 * - it locks the config file by creating ".git/config.lock"
2293 * - it then parses the config using store_aux() as validator to find
2294 * the position on the key/value pair to replace. If it is to be unset,
2295 * it must be found exactly once.
2297 * - the config file is mmap()ed and the part before the match (if any) is
2298 * written to the lock file, then the changed part and the rest.
2300 * - the config file is removed and the lock file rename()d to it.
2303 int git_config_set_multivar_in_file_gently(const char *config_filename,
2304 const char *key, const char *value,
2305 const char *value_regex,
2308 int fd = -1, in_fd = -1;
2310 struct lock_file *lock = NULL;
2311 char *filename_buf = NULL;
2312 char *contents = NULL;
2315 /* parse-key returns negative; flip the sign to feed exit(3) */
2316 ret = 0 - git_config_parse_key(key, &store.key, &store.baselen);
2320 store.multi_replace = multi_replace;
2322 if (!config_filename)
2323 config_filename = filename_buf = git_pathdup("config");
2326 * The lock serves a purpose in addition to locking: the new
2327 * contents of .git/config will be written into it.
2329 lock = xcalloc(1, sizeof(struct lock_file));
2330 fd = hold_lock_file_for_update(lock, config_filename, 0);
2332 error_errno("could not lock config file %s", config_filename);
2334 ret = CONFIG_NO_LOCK;
2339 * If .git/config does not exist yet, write a minimal version.
2341 in_fd = open(config_filename, O_RDONLY);
2345 if ( ENOENT != errno ) {
2346 error_errno("opening %s", config_filename);
2347 ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
2350 /* if nothing to unset, error out */
2351 if (value == NULL) {
2352 ret = CONFIG_NOTHING_SET;
2356 store.key = (char *)key;
2357 if (!store_write_section(fd, key) ||
2358 !store_write_pair(fd, key, value))
2362 size_t copy_begin, copy_end;
2363 int i, new_line = 0;
2365 if (value_regex == NULL)
2366 store.value_regex = NULL;
2367 else if (value_regex == CONFIG_REGEX_NONE)
2368 store.value_regex = CONFIG_REGEX_NONE;
2370 if (value_regex[0] == '!') {
2371 store.do_not_match = 1;
2374 store.do_not_match = 0;
2376 store.value_regex = (regex_t*)xmalloc(sizeof(regex_t));
2377 if (regcomp(store.value_regex, value_regex,
2379 error("invalid pattern: %s", value_regex);
2380 free(store.value_regex);
2381 ret = CONFIG_INVALID_PATTERN;
2386 ALLOC_GROW(store.offset, 1, store.offset_alloc);
2387 store.offset[0] = 0;
2388 store.state = START;
2392 * After this, store.offset will contain the *end* offset
2393 * of the last match, or remain at 0 if no match was found.
2394 * As a side effect, we make sure to transform only a valid
2395 * existing config file.
2397 if (git_config_from_file(store_aux, config_filename, NULL)) {
2398 error("invalid config file %s", config_filename);
2400 if (store.value_regex != NULL &&
2401 store.value_regex != CONFIG_REGEX_NONE) {
2402 regfree(store.value_regex);
2403 free(store.value_regex);
2405 ret = CONFIG_INVALID_FILE;
2410 if (store.value_regex != NULL &&
2411 store.value_regex != CONFIG_REGEX_NONE) {
2412 regfree(store.value_regex);
2413 free(store.value_regex);
2416 /* if nothing to unset, or too many matches, error out */
2417 if ((store.seen == 0 && value == NULL) ||
2418 (store.seen > 1 && multi_replace == 0)) {
2419 ret = CONFIG_NOTHING_SET;
2423 if (fstat(in_fd, &st) == -1) {
2424 error_errno(_("fstat on %s failed"), config_filename);
2425 ret = CONFIG_INVALID_FILE;
2429 contents_sz = xsize_t(st.st_size);
2430 contents = xmmap_gently(NULL, contents_sz, PROT_READ,
2431 MAP_PRIVATE, in_fd, 0);
2432 if (contents == MAP_FAILED) {
2433 if (errno == ENODEV && S_ISDIR(st.st_mode))
2435 error_errno("unable to mmap '%s'", config_filename);
2436 ret = CONFIG_INVALID_FILE;
2443 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2444 error_errno("chmod on %s failed", get_lock_file_path(lock));
2445 ret = CONFIG_NO_WRITE;
2449 if (store.seen == 0)
2452 for (i = 0, copy_begin = 0; i < store.seen; i++) {
2453 if (store.offset[i] == 0) {
2454 store.offset[i] = copy_end = contents_sz;
2455 } else if (store.state != KEY_SEEN) {
2456 copy_end = store.offset[i];
2458 copy_end = find_beginning_of_line(
2459 contents, contents_sz,
2460 store.offset[i]-2, &new_line);
2462 if (copy_end > 0 && contents[copy_end-1] != '\n')
2465 /* write the first part of the config */
2466 if (copy_end > copy_begin) {
2467 if (write_in_full(fd, contents + copy_begin,
2468 copy_end - copy_begin) <
2469 copy_end - copy_begin)
2472 write_str_in_full(fd, "\n") != 1)
2475 copy_begin = store.offset[i];
2478 /* write the pair (value == NULL means unset) */
2479 if (value != NULL) {
2480 if (store.state == START) {
2481 if (!store_write_section(fd, key))
2484 if (!store_write_pair(fd, key, value))
2488 /* write the rest of the config */
2489 if (copy_begin < contents_sz)
2490 if (write_in_full(fd, contents + copy_begin,
2491 contents_sz - copy_begin) <
2492 contents_sz - copy_begin)
2495 munmap(contents, contents_sz);
2499 if (commit_lock_file(lock) < 0) {
2500 error_errno("could not write config file %s", config_filename);
2501 ret = CONFIG_NO_WRITE;
2507 * lock is committed, so don't try to roll it back below.
2508 * NOTE: Since lockfile.c keeps a linked list of all created
2509 * lock_file structures, it isn't safe to free(lock). It's
2510 * better to just leave it hanging around.
2515 /* Invalidate the config cache */
2520 rollback_lock_file(lock);
2523 munmap(contents, contents_sz);
2529 ret = write_error(get_lock_file_path(lock));
2534 void git_config_set_multivar_in_file(const char *config_filename,
2535 const char *key, const char *value,
2536 const char *value_regex, int multi_replace)
2538 if (!git_config_set_multivar_in_file_gently(config_filename, key, value,
2539 value_regex, multi_replace))
2542 die(_("could not set '%s' to '%s'"), key, value);
2544 die(_("could not unset '%s'"), key);
2547 int git_config_set_multivar_gently(const char *key, const char *value,
2548 const char *value_regex, int multi_replace)
2550 return git_config_set_multivar_in_file_gently(NULL, key, value, value_regex,
2554 void git_config_set_multivar(const char *key, const char *value,
2555 const char *value_regex, int multi_replace)
2557 git_config_set_multivar_in_file(NULL, key, value, value_regex,
2561 static int section_name_match (const char *buf, const char *name)
2563 int i = 0, j = 0, dot = 0;
2566 for (i = 1; buf[i] && buf[i] != ']'; i++) {
2567 if (!dot && isspace(buf[i])) {
2569 if (name[j++] != '.')
2571 for (i++; isspace(buf[i]); i++)
2577 if (buf[i] == '\\' && dot)
2579 else if (buf[i] == '"' && dot) {
2580 for (i++; isspace(buf[i]); i++)
2584 if (buf[i] != name[j++])
2587 if (buf[i] == ']' && name[j] == 0) {
2589 * We match, now just find the right length offset by
2590 * gobbling up any whitespace after it, as well
2593 for (; buf[i] && isspace(buf[i]); i++)
2600 static int section_name_is_ok(const char *name)
2602 /* Empty section names are bogus. */
2607 * Before a dot, we must be alphanumeric or dash. After the first dot,
2608 * anything goes, so we can stop checking.
2610 for (; *name && *name != '.'; name++)
2611 if (*name != '-' && !isalnum(*name))
2616 /* if new_name == NULL, the section is removed instead */
2617 int git_config_rename_section_in_file(const char *config_filename,
2618 const char *old_name, const char *new_name)
2620 int ret = 0, remove = 0;
2621 char *filename_buf = NULL;
2622 struct lock_file *lock;
2625 FILE *config_file = NULL;
2628 if (new_name && !section_name_is_ok(new_name)) {
2629 ret = error("invalid section name: %s", new_name);
2630 goto out_no_rollback;
2633 if (!config_filename)
2634 config_filename = filename_buf = git_pathdup("config");
2636 lock = xcalloc(1, sizeof(struct lock_file));
2637 out_fd = hold_lock_file_for_update(lock, config_filename, 0);
2639 ret = error("could not lock config file %s", config_filename);
2643 if (!(config_file = fopen(config_filename, "rb"))) {
2644 /* no config file means nothing to rename, no error */
2645 goto commit_and_out;
2648 if (fstat(fileno(config_file), &st) == -1) {
2649 ret = error_errno(_("fstat on %s failed"), config_filename);
2653 if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
2654 ret = error_errno("chmod on %s failed",
2655 get_lock_file_path(lock));
2659 while (fgets(buf, sizeof(buf), config_file)) {
2663 for (i = 0; buf[i] && isspace(buf[i]); i++)
2665 if (buf[i] == '[') {
2666 /* it's a section */
2667 int offset = section_name_match(&buf[i], old_name);
2670 if (new_name == NULL) {
2674 store.baselen = strlen(new_name);
2675 if (!store_write_section(out_fd, new_name)) {
2676 ret = write_error(get_lock_file_path(lock));
2680 * We wrote out the new section, with
2681 * a newline, now skip the old
2684 output += offset + i;
2685 if (strlen(output) > 0) {
2687 * More content means there's
2688 * a declaration to put on the
2689 * next line; indent with a
2700 length = strlen(output);
2701 if (write_in_full(out_fd, output, length) != length) {
2702 ret = write_error(get_lock_file_path(lock));
2706 fclose(config_file);
2709 if (commit_lock_file(lock) < 0)
2710 ret = error_errno("could not write config file %s",
2714 fclose(config_file);
2715 rollback_lock_file(lock);
2721 int git_config_rename_section(const char *old_name, const char *new_name)
2723 return git_config_rename_section_in_file(NULL, old_name, new_name);
2727 * Call this to report error for your variable that should not
2728 * get a boolean value (i.e. "[my] var" means "true").
2730 #undef config_error_nonbool
2731 int config_error_nonbool(const char *var)
2733 return error("missing value for '%s'", var);
2736 int parse_config_key(const char *var,
2737 const char *section,
2738 const char **subsection, int *subsection_len,
2743 /* Does it start with "section." ? */
2744 if (!skip_prefix(var, section, &var) || *var != '.')
2748 * Find the key; we don't know yet if we have a subsection, but we must
2749 * parse backwards from the end, since the subsection may have dots in
2752 dot = strrchr(var, '.');
2755 /* Did we have a subsection at all? */
2759 *subsection_len = 0;
2765 *subsection = var + 1;
2766 *subsection_len = dot - *subsection;
2772 const char *current_config_origin_type(void)
2775 if (current_config_kvi)
2776 type = current_config_kvi->origin_type;
2778 type = cf->origin_type;
2780 die("BUG: current_config_origin_type called outside config callback");
2783 case CONFIG_ORIGIN_BLOB:
2785 case CONFIG_ORIGIN_FILE:
2787 case CONFIG_ORIGIN_STDIN:
2788 return "standard input";
2789 case CONFIG_ORIGIN_SUBMODULE_BLOB:
2790 return "submodule-blob";
2791 case CONFIG_ORIGIN_CMDLINE:
2792 return "command line";
2794 die("BUG: unknown config origin type");
2798 const char *current_config_name(void)
2801 if (current_config_kvi)
2802 name = current_config_kvi->filename;
2806 die("BUG: current_config_name called outside config callback");
2807 return name ? name : "";
2810 enum config_scope current_config_scope(void)
2812 if (current_config_kvi)
2813 return current_config_kvi->scope;
2815 return current_parsing_scope;