2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
15 static FILE *config_file
;
16 static const char *config_file_name
;
17 static int config_linenr
;
18 static int config_file_eof
;
19 static int zlib_compression_seen
;
21 const char *config_exclusive_filename
= NULL
;
24 struct config_item
*next
;
28 static struct config_item
*config_parameters
;
29 static struct config_item
**config_parameters_tail
= &config_parameters
;
31 static void lowercase(char *p
)
37 void git_config_push_parameter(const char *text
)
39 struct strbuf env
= STRBUF_INIT
;
40 const char *old
= getenv(CONFIG_DATA_ENVIRONMENT
);
42 strbuf_addstr(&env
, old
);
43 strbuf_addch(&env
, ' ');
45 sq_quote_buf(&env
, text
);
46 setenv(CONFIG_DATA_ENVIRONMENT
, env
.buf
, 1);
50 int git_config_parse_parameter(const char *text
)
52 struct config_item
*ct
;
53 struct strbuf tmp
= STRBUF_INIT
;
55 strbuf_addstr(&tmp
, text
);
56 pair
= strbuf_split(&tmp
, '=');
57 if (pair
[0]->len
&& pair
[0]->buf
[pair
[0]->len
- 1] == '=')
58 strbuf_setlen(pair
[0], pair
[0]->len
- 1);
61 strbuf_list_free(pair
);
64 ct
= xcalloc(1, sizeof(struct config_item
));
65 ct
->name
= strbuf_detach(pair
[0], NULL
);
68 ct
->value
= strbuf_detach(pair
[1], NULL
);
70 strbuf_list_free(pair
);
72 *config_parameters_tail
= ct
;
73 config_parameters_tail
= &ct
->next
;
77 int git_config_parse_environment(void) {
78 const char *env
= getenv(CONFIG_DATA_ENVIRONMENT
);
80 const char **argv
= NULL
;
81 int nr
= 0, alloc
= 0;
86 /* sq_dequote will write over it */
89 if (sq_dequote_to_argv(envw
, &argv
, &nr
, &alloc
) < 0) {
91 return error("bogus format in " CONFIG_DATA_ENVIRONMENT
);
94 for (i
= 0; i
< nr
; i
++) {
95 if (git_config_parse_parameter(argv
[i
]) < 0) {
96 error("bogus config parameter: %s", argv
[i
]);
108 static int get_next_char(void)
114 if ((f
= config_file
) != NULL
) {
117 /* DOS like systems */
134 static char *parse_value(void)
136 static char value
[1024];
137 int quote
= 0, comment
= 0, len
= 0, space
= 0;
140 int c
= get_next_char();
141 if (len
>= sizeof(value
) - 1)
151 if (isspace(c
) && !quote
) {
157 if (c
== ';' || c
== '#') {
162 for (; space
; space
--)
178 /* Some characters escape as themselves */
181 /* Reject unknown escape sequences */
196 static inline int iskeychar(int c
)
198 return isalnum(c
) || c
== '-';
201 static int get_value(config_fn_t fn
, void *data
, char *name
, unsigned int len
)
206 /* Get the full name */
213 name
[len
++] = tolower(c
);
218 while (c
== ' ' || c
== '\t')
225 value
= parse_value();
229 return fn(name
, value
, data
);
232 static int get_extended_base_var(char *name
, int baselen
, int c
)
238 } while (isspace(c
));
240 /* We require the format to be '[base "extension"]' */
243 name
[baselen
++] = '.';
246 int c
= get_next_char();
257 if (baselen
> MAXNAME
/ 2)
262 if (get_next_char() != ']')
267 static int get_base_var(char *name
)
272 int c
= get_next_char();
278 return get_extended_base_var(name
, baselen
, c
);
279 if (!iskeychar(c
) && c
!= '.')
281 if (baselen
> MAXNAME
/ 2)
283 name
[baselen
++] = tolower(c
);
287 static int git_parse_file(config_fn_t fn
, void *data
)
291 static char var
[MAXNAME
];
293 /* U+FEFF Byte Order Mark in UTF8 */
294 static const unsigned char *utf8_bom
= (unsigned char *) "\xef\xbb\xbf";
295 const unsigned char *bomptr
= utf8_bom
;
298 int c
= get_next_char();
299 if (bomptr
&& *bomptr
) {
300 /* We are at the file beginning; skip UTF8-encoded BOM
301 * if present. Sane editors won't put this in on their
302 * own, but e.g. Windows Notepad will do it happily. */
303 if ((unsigned char) c
== *bomptr
) {
307 /* Do not tolerate partial BOM. */
308 if (bomptr
!= utf8_bom
)
310 /* No BOM at file beginning. Cool. */
320 if (comment
|| isspace(c
))
322 if (c
== '#' || c
== ';') {
327 baselen
= get_base_var(var
);
330 var
[baselen
++] = '.';
336 var
[baselen
] = tolower(c
);
337 if (get_value(fn
, data
, var
, baselen
+1) < 0)
340 die("bad config file line %d in %s", config_linenr
, config_file_name
);
343 static int parse_unit_factor(const char *end
, unsigned long *val
)
347 else if (!strcasecmp(end
, "k")) {
351 else if (!strcasecmp(end
, "m")) {
355 else if (!strcasecmp(end
, "g")) {
356 *val
*= 1024 * 1024 * 1024;
362 static int git_parse_long(const char *value
, long *ret
)
364 if (value
&& *value
) {
366 long val
= strtol(value
, &end
, 0);
367 unsigned long factor
= 1;
368 if (!parse_unit_factor(end
, &factor
))
376 int git_parse_ulong(const char *value
, unsigned long *ret
)
378 if (value
&& *value
) {
380 unsigned long val
= strtoul(value
, &end
, 0);
381 if (!parse_unit_factor(end
, &val
))
389 static void die_bad_config(const char *name
)
391 if (config_file_name
)
392 die("bad config value for '%s' in %s", name
, config_file_name
);
393 die("bad config value for '%s'", name
);
396 int git_config_int(const char *name
, const char *value
)
399 if (!git_parse_long(value
, &ret
))
400 die_bad_config(name
);
404 unsigned long git_config_ulong(const char *name
, const char *value
)
407 if (!git_parse_ulong(value
, &ret
))
408 die_bad_config(name
);
412 static int git_config_maybe_bool_text(const char *name
, const char *value
)
418 if (!strcasecmp(value
, "true")
419 || !strcasecmp(value
, "yes")
420 || !strcasecmp(value
, "on"))
422 if (!strcasecmp(value
, "false")
423 || !strcasecmp(value
, "no")
424 || !strcasecmp(value
, "off"))
429 int git_config_maybe_bool(const char *name
, const char *value
)
431 long v
= git_config_maybe_bool_text(name
, value
);
434 if (git_parse_long(value
, &v
))
439 int git_config_bool_or_int(const char *name
, const char *value
, int *is_bool
)
441 int v
= git_config_maybe_bool_text(name
, value
);
447 return git_config_int(name
, value
);
450 int git_config_bool(const char *name
, const char *value
)
453 return !!git_config_bool_or_int(name
, value
, &discard
);
456 int git_config_string(const char **dest
, const char *var
, const char *value
)
459 return config_error_nonbool(var
);
460 *dest
= xstrdup(value
);
464 int git_config_pathname(const char **dest
, const char *var
, const char *value
)
467 return config_error_nonbool(var
);
468 *dest
= expand_user_path(value
);
470 die("Failed to expand user dir in: '%s'", value
);
474 static int git_default_core_config(const char *var
, const char *value
)
476 /* This needs a better name */
477 if (!strcmp(var
, "core.filemode")) {
478 trust_executable_bit
= git_config_bool(var
, value
);
481 if (!strcmp(var
, "core.trustctime")) {
482 trust_ctime
= git_config_bool(var
, value
);
486 if (!strcmp(var
, "core.quotepath")) {
487 quote_path_fully
= git_config_bool(var
, value
);
491 if (!strcmp(var
, "core.symlinks")) {
492 has_symlinks
= git_config_bool(var
, value
);
496 if (!strcmp(var
, "core.ignorecase")) {
497 ignore_case
= git_config_bool(var
, value
);
501 if (!strcmp(var
, "core.bare")) {
502 is_bare_repository_cfg
= git_config_bool(var
, value
);
506 if (!strcmp(var
, "core.ignorestat")) {
507 assume_unchanged
= git_config_bool(var
, value
);
511 if (!strcmp(var
, "core.prefersymlinkrefs")) {
512 prefer_symlink_refs
= git_config_bool(var
, value
);
516 if (!strcmp(var
, "core.logallrefupdates")) {
517 log_all_ref_updates
= git_config_bool(var
, value
);
521 if (!strcmp(var
, "core.warnambiguousrefs")) {
522 warn_ambiguous_refs
= git_config_bool(var
, value
);
526 if (!strcmp(var
, "core.abbrevlength")) {
527 int abbrev
= git_config_int(var
, value
);
528 if (abbrev
< minimum_abbrev
|| abbrev
> 40)
530 default_abbrev
= abbrev
;
534 if (!strcmp(var
, "core.loosecompression")) {
535 int level
= git_config_int(var
, value
);
537 level
= Z_DEFAULT_COMPRESSION
;
538 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
539 die("bad zlib compression level %d", level
);
540 zlib_compression_level
= level
;
541 zlib_compression_seen
= 1;
545 if (!strcmp(var
, "core.compression")) {
546 int level
= git_config_int(var
, value
);
548 level
= Z_DEFAULT_COMPRESSION
;
549 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
550 die("bad zlib compression level %d", level
);
551 core_compression_level
= level
;
552 core_compression_seen
= 1;
553 if (!zlib_compression_seen
)
554 zlib_compression_level
= level
;
558 if (!strcmp(var
, "core.packedgitwindowsize")) {
559 int pgsz_x2
= getpagesize() * 2;
560 packed_git_window_size
= git_config_int(var
, value
);
562 /* This value must be multiple of (pagesize * 2) */
563 packed_git_window_size
/= pgsz_x2
;
564 if (packed_git_window_size
< 1)
565 packed_git_window_size
= 1;
566 packed_git_window_size
*= pgsz_x2
;
570 if (!strcmp(var
, "core.packedgitlimit")) {
571 packed_git_limit
= git_config_int(var
, value
);
575 if (!strcmp(var
, "core.deltabasecachelimit")) {
576 delta_base_cache_limit
= git_config_int(var
, value
);
580 if (!strcmp(var
, "core.autocrlf")) {
581 if (value
&& !strcasecmp(value
, "input")) {
583 return error("core.autocrlf=input conflicts with core.eol=crlf");
584 auto_crlf
= AUTO_CRLF_INPUT
;
587 auto_crlf
= git_config_bool(var
, value
);
591 if (!strcmp(var
, "core.safecrlf")) {
592 if (value
&& !strcasecmp(value
, "warn")) {
593 safe_crlf
= SAFE_CRLF_WARN
;
596 safe_crlf
= git_config_bool(var
, value
);
600 if (!strcmp(var
, "core.eol")) {
601 if (value
&& !strcasecmp(value
, "lf"))
603 else if (value
&& !strcasecmp(value
, "crlf"))
605 else if (value
&& !strcasecmp(value
, "native"))
609 if (eol
== EOL_CRLF
&& auto_crlf
== AUTO_CRLF_INPUT
)
610 return error("core.autocrlf=input conflicts with core.eol=crlf");
614 if (!strcmp(var
, "core.notesref")) {
615 notes_ref_name
= xstrdup(value
);
619 if (!strcmp(var
, "core.pager"))
620 return git_config_string(&pager_program
, var
, value
);
622 if (!strcmp(var
, "core.editor"))
623 return git_config_string(&editor_program
, var
, value
);
625 if (!strcmp(var
, "core.askpass"))
626 return git_config_string(&askpass_program
, var
, value
);
628 if (!strcmp(var
, "core.excludesfile"))
629 return git_config_pathname(&excludes_file
, var
, value
);
631 if (!strcmp(var
, "core.whitespace")) {
633 return config_error_nonbool(var
);
634 whitespace_rule_cfg
= parse_whitespace_rule(value
);
638 if (!strcmp(var
, "core.fsyncobjectfiles")) {
639 fsync_object_files
= git_config_bool(var
, value
);
643 if (!strcmp(var
, "core.preloadindex")) {
644 core_preload_index
= git_config_bool(var
, value
);
648 if (!strcmp(var
, "core.createobject")) {
649 if (!strcmp(value
, "rename"))
650 object_creation_mode
= OBJECT_CREATION_USES_RENAMES
;
651 else if (!strcmp(value
, "link"))
652 object_creation_mode
= OBJECT_CREATION_USES_HARDLINKS
;
654 die("Invalid mode for object creation: %s", value
);
658 if (!strcmp(var
, "core.sparsecheckout")) {
659 core_apply_sparse_checkout
= git_config_bool(var
, value
);
663 /* Add other config variables here and to Documentation/config.txt. */
667 static int git_default_user_config(const char *var
, const char *value
)
669 if (!strcmp(var
, "user.name")) {
671 return config_error_nonbool(var
);
672 strlcpy(git_default_name
, value
, sizeof(git_default_name
));
673 user_ident_explicitly_given
|= IDENT_NAME_GIVEN
;
677 if (!strcmp(var
, "user.email")) {
679 return config_error_nonbool(var
);
680 strlcpy(git_default_email
, value
, sizeof(git_default_email
));
681 user_ident_explicitly_given
|= IDENT_MAIL_GIVEN
;
685 /* Add other config variables here and to Documentation/config.txt. */
689 static int git_default_i18n_config(const char *var
, const char *value
)
691 if (!strcmp(var
, "i18n.commitencoding"))
692 return git_config_string(&git_commit_encoding
, var
, value
);
694 if (!strcmp(var
, "i18n.logoutputencoding"))
695 return git_config_string(&git_log_output_encoding
, var
, value
);
697 /* Add other config variables here and to Documentation/config.txt. */
701 static int git_default_branch_config(const char *var
, const char *value
)
703 if (!strcmp(var
, "branch.autosetupmerge")) {
704 if (value
&& !strcasecmp(value
, "always")) {
705 git_branch_track
= BRANCH_TRACK_ALWAYS
;
708 git_branch_track
= git_config_bool(var
, value
);
711 if (!strcmp(var
, "branch.autosetuprebase")) {
713 return config_error_nonbool(var
);
714 else if (!strcmp(value
, "never"))
715 autorebase
= AUTOREBASE_NEVER
;
716 else if (!strcmp(value
, "local"))
717 autorebase
= AUTOREBASE_LOCAL
;
718 else if (!strcmp(value
, "remote"))
719 autorebase
= AUTOREBASE_REMOTE
;
720 else if (!strcmp(value
, "always"))
721 autorebase
= AUTOREBASE_ALWAYS
;
723 return error("Malformed value for %s", var
);
727 /* Add other config variables here and to Documentation/config.txt. */
731 static int git_default_push_config(const char *var
, const char *value
)
733 if (!strcmp(var
, "push.default")) {
735 return config_error_nonbool(var
);
736 else if (!strcmp(value
, "nothing"))
737 push_default
= PUSH_DEFAULT_NOTHING
;
738 else if (!strcmp(value
, "matching"))
739 push_default
= PUSH_DEFAULT_MATCHING
;
740 else if (!strcmp(value
, "upstream"))
741 push_default
= PUSH_DEFAULT_UPSTREAM
;
742 else if (!strcmp(value
, "tracking")) /* deprecated */
743 push_default
= PUSH_DEFAULT_UPSTREAM
;
744 else if (!strcmp(value
, "current"))
745 push_default
= PUSH_DEFAULT_CURRENT
;
747 error("Malformed value for %s: %s", var
, value
);
748 return error("Must be one of nothing, matching, "
749 "tracking or current.");
754 /* Add other config variables here and to Documentation/config.txt. */
758 static int git_default_mailmap_config(const char *var
, const char *value
)
760 if (!strcmp(var
, "mailmap.file"))
761 return git_config_string(&git_mailmap_file
, var
, value
);
763 /* Add other config variables here and to Documentation/config.txt. */
767 int git_default_config(const char *var
, const char *value
, void *dummy
)
769 if (!prefixcmp(var
, "core."))
770 return git_default_core_config(var
, value
);
772 if (!prefixcmp(var
, "user."))
773 return git_default_user_config(var
, value
);
775 if (!prefixcmp(var
, "i18n."))
776 return git_default_i18n_config(var
, value
);
778 if (!prefixcmp(var
, "branch."))
779 return git_default_branch_config(var
, value
);
781 if (!prefixcmp(var
, "push."))
782 return git_default_push_config(var
, value
);
784 if (!prefixcmp(var
, "mailmap."))
785 return git_default_mailmap_config(var
, value
);
787 if (!prefixcmp(var
, "advice."))
788 return git_default_advice_config(var
, value
);
790 if (!strcmp(var
, "pager.color") || !strcmp(var
, "color.pager")) {
791 pager_use_color
= git_config_bool(var
,value
);
795 /* Add other config variables here and to Documentation/config.txt. */
799 int git_config_from_file(config_fn_t fn
, const char *filename
, void *data
)
802 FILE *f
= fopen(filename
, "r");
807 config_file_name
= filename
;
810 ret
= git_parse_file(fn
, data
);
812 config_file_name
= NULL
;
817 const char *git_etc_gitconfig(void)
819 static const char *system_wide
;
821 system_wide
= system_path(ETC_GITCONFIG
);
825 int git_env_bool(const char *k
, int def
)
827 const char *v
= getenv(k
);
828 return v
? git_config_bool(k
, v
) : def
;
831 int git_config_system(void)
833 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
836 int git_config_from_parameters(config_fn_t fn
, void *data
)
838 static int loaded_environment
;
839 const struct config_item
*ct
;
841 if (!loaded_environment
) {
842 if (git_config_parse_environment() < 0)
844 loaded_environment
= 1;
846 for (ct
= config_parameters
; ct
; ct
= ct
->next
)
847 if (fn(ct
->name
, ct
->value
, data
) < 0)
852 int git_config_early(config_fn_t fn
, void *data
, const char *repo_config
)
854 int ret
= 0, found
= 0;
855 const char *home
= NULL
;
857 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
858 if (config_exclusive_filename
)
859 return git_config_from_file(fn
, config_exclusive_filename
, data
);
860 if (git_config_system() && !access(git_etc_gitconfig(), R_OK
)) {
861 ret
+= git_config_from_file(fn
, git_etc_gitconfig(),
866 home
= getenv("HOME");
868 char *user_config
= xstrdup(mkpath("%s/.gitconfig", home
));
869 if (!access(user_config
, R_OK
)) {
870 ret
+= git_config_from_file(fn
, user_config
, data
);
876 if (repo_config
&& !access(repo_config
, R_OK
)) {
877 ret
+= git_config_from_file(fn
, repo_config
, data
);
881 ret
+= git_config_from_parameters(fn
, data
);
882 if (config_parameters
)
885 return ret
== 0 ? found
: ret
;
888 int git_config(config_fn_t fn
, void *data
)
890 char *repo_config
= NULL
;
893 repo_config
= git_pathdup("config");
894 ret
= git_config_early(fn
, data
, repo_config
);
901 * Find all the stuff for git_config_set() below.
904 #define MAX_MATCHES 512
910 regex_t
*value_regex
;
912 size_t offset
[MAX_MATCHES
];
913 enum { START
, SECTION_SEEN
, SECTION_END_SEEN
, KEY_SEEN
} state
;
917 static int matches(const char *key
, const char *value
)
919 return !strcmp(key
, store
.key
) &&
920 (store
.value_regex
== NULL
||
921 (store
.do_not_match
^
922 !regexec(store
.value_regex
, value
, 0, NULL
, 0)));
925 static int store_aux(const char *key
, const char *value
, void *cb
)
930 switch (store
.state
) {
932 if (matches(key
, value
)) {
933 if (store
.seen
== 1 && store
.multi_replace
== 0) {
934 warning("%s has multiple values", key
);
935 } else if (store
.seen
>= MAX_MATCHES
) {
936 error("too many matches for %s", key
);
940 store
.offset
[store
.seen
] = ftell(config_file
);
946 * What we are looking for is in store.key (both
947 * section and var), and its section part is baselen
948 * long. We found key (again, both section and var).
949 * We would want to know if this key is in the same
950 * section as what we are looking for. We already
951 * know we are in the same section as what should
954 ep
= strrchr(key
, '.');
955 section_len
= ep
- key
;
957 if ((section_len
!= store
.baselen
) ||
958 memcmp(key
, store
.key
, section_len
+1)) {
959 store
.state
= SECTION_END_SEEN
;
964 * Do not increment matches: this is no match, but we
965 * just made sure we are in the desired section.
967 store
.offset
[store
.seen
] = ftell(config_file
);
969 case SECTION_END_SEEN
:
971 if (matches(key
, value
)) {
972 store
.offset
[store
.seen
] = ftell(config_file
);
973 store
.state
= KEY_SEEN
;
976 if (strrchr(key
, '.') - key
== store
.baselen
&&
977 !strncmp(key
, store
.key
, store
.baselen
)) {
978 store
.state
= SECTION_SEEN
;
979 store
.offset
[store
.seen
] = ftell(config_file
);
986 static int write_error(const char *filename
)
988 error("failed to write new configuration file %s", filename
);
990 /* Same error code as "failed to rename". */
994 static int store_write_section(int fd
, const char *key
)
998 struct strbuf sb
= STRBUF_INIT
;
1000 dot
= memchr(key
, '.', store
.baselen
);
1002 strbuf_addf(&sb
, "[%.*s \"", (int)(dot
- key
), key
);
1003 for (i
= dot
- key
+ 1; i
< store
.baselen
; i
++) {
1004 if (key
[i
] == '"' || key
[i
] == '\\')
1005 strbuf_addch(&sb
, '\\');
1006 strbuf_addch(&sb
, key
[i
]);
1008 strbuf_addstr(&sb
, "\"]\n");
1010 strbuf_addf(&sb
, "[%.*s]\n", store
.baselen
, key
);
1013 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1014 strbuf_release(&sb
);
1019 static int store_write_pair(int fd
, const char *key
, const char *value
)
1022 int length
= strlen(key
+ store
.baselen
+ 1);
1023 const char *quote
= "";
1024 struct strbuf sb
= STRBUF_INIT
;
1027 * Check to see if the value needs to be surrounded with a dq pair.
1028 * Note that problematic characters are always backslash-quoted; this
1029 * check is about not losing leading or trailing SP and strings that
1030 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1031 * configuration parser.
1033 if (value
[0] == ' ')
1035 for (i
= 0; value
[i
]; i
++)
1036 if (value
[i
] == ';' || value
[i
] == '#')
1038 if (i
&& value
[i
- 1] == ' ')
1041 strbuf_addf(&sb
, "\t%.*s = %s",
1042 length
, key
+ store
.baselen
+ 1, quote
);
1044 for (i
= 0; value
[i
]; i
++)
1047 strbuf_addstr(&sb
, "\\n");
1050 strbuf_addstr(&sb
, "\\t");
1054 strbuf_addch(&sb
, '\\');
1056 strbuf_addch(&sb
, value
[i
]);
1059 strbuf_addf(&sb
, "%s\n", quote
);
1061 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1062 strbuf_release(&sb
);
1067 static ssize_t
find_beginning_of_line(const char *contents
, size_t size
,
1068 size_t offset_
, int *found_bracket
)
1070 size_t equal_offset
= size
, bracket_offset
= size
;
1074 for (offset
= offset_
-2; offset
> 0
1075 && contents
[offset
] != '\n'; offset
--)
1076 switch (contents
[offset
]) {
1077 case '=': equal_offset
= offset
; break;
1078 case ']': bracket_offset
= offset
; break;
1080 if (offset
> 0 && contents
[offset
-1] == '\\') {
1084 if (bracket_offset
< equal_offset
) {
1086 offset
= bracket_offset
+1;
1093 int git_config_set(const char *key
, const char *value
)
1095 return git_config_set_multivar(key
, value
, NULL
, 0);
1099 * Auxiliary function to sanity-check and split the key into the section
1100 * identifier and variable name.
1102 * Returns 0 on success, -1 when there is an invalid character in the key and
1103 * -2 if there is no section name in the key.
1105 * store_key - pointer to char* which will hold a copy of the key with
1106 * lowercase section and variable name
1107 * baselen - pointer to int which will hold the length of the
1108 * section + subsection part, can be NULL
1110 int git_config_parse_key(const char *key
, char **store_key
, int *baselen_
)
1112 int i
, dot
, baselen
;
1113 const char *last_dot
= strrchr(key
, '.');
1116 * Since "key" actually contains the section name and the real
1117 * key name separated by a dot, we have to know where the dot is.
1120 if (last_dot
== NULL
|| last_dot
== key
) {
1121 error("key does not contain a section: %s", key
);
1126 error("key does not contain variable name: %s", key
);
1130 baselen
= last_dot
- key
;
1132 *baselen_
= baselen
;
1135 * Validate the key and while at it, lower case it for matching.
1137 *store_key
= xmalloc(strlen(key
) + 1);
1140 for (i
= 0; key
[i
]; i
++) {
1141 unsigned char c
= key
[i
];
1144 /* Leave the extended basename untouched.. */
1145 if (!dot
|| i
> baselen
) {
1146 if (!iskeychar(c
) ||
1147 (i
== baselen
+ 1 && !isalpha(c
))) {
1148 error("invalid key: %s", key
);
1149 goto out_free_ret_1
;
1152 } else if (c
== '\n') {
1153 error("invalid key (newline): %s", key
);
1154 goto out_free_ret_1
;
1156 (*store_key
)[i
] = c
;
1158 (*store_key
)[i
] = 0;
1168 * If value==NULL, unset in (remove from) config,
1169 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1170 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1171 * else all matching key/values (regardless how many) are removed,
1172 * before the new pair is written.
1174 * Returns 0 on success.
1176 * This function does this:
1178 * - it locks the config file by creating ".git/config.lock"
1180 * - it then parses the config using store_aux() as validator to find
1181 * the position on the key/value pair to replace. If it is to be unset,
1182 * it must be found exactly once.
1184 * - the config file is mmap()ed and the part before the match (if any) is
1185 * written to the lock file, then the changed part and the rest.
1187 * - the config file is removed and the lock file rename()d to it.
1190 int git_config_set_multivar(const char *key
, const char *value
,
1191 const char *value_regex
, int multi_replace
)
1195 char *config_filename
;
1196 struct lock_file
*lock
= NULL
;
1198 if (config_exclusive_filename
)
1199 config_filename
= xstrdup(config_exclusive_filename
);
1201 config_filename
= git_pathdup("config");
1203 /* parse-key returns negative; flip the sign to feed exit(3) */
1204 ret
= 0 - git_config_parse_key(key
, &store
.key
, &store
.baselen
);
1208 store
.multi_replace
= multi_replace
;
1212 * The lock serves a purpose in addition to locking: the new
1213 * contents of .git/config will be written into it.
1215 lock
= xcalloc(sizeof(struct lock_file
), 1);
1216 fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1218 error("could not lock config file %s: %s", config_filename
, strerror(errno
));
1225 * If .git/config does not exist yet, write a minimal version.
1227 in_fd
= open(config_filename
, O_RDONLY
);
1231 if ( ENOENT
!= errno
) {
1232 error("opening %s: %s", config_filename
,
1234 ret
= 3; /* same as "invalid config file" */
1237 /* if nothing to unset, error out */
1238 if (value
== NULL
) {
1243 store
.key
= (char *)key
;
1244 if (!store_write_section(fd
, key
) ||
1245 !store_write_pair(fd
, key
, value
))
1250 size_t contents_sz
, copy_begin
, copy_end
;
1251 int i
, new_line
= 0;
1253 if (value_regex
== NULL
)
1254 store
.value_regex
= NULL
;
1256 if (value_regex
[0] == '!') {
1257 store
.do_not_match
= 1;
1260 store
.do_not_match
= 0;
1262 store
.value_regex
= (regex_t
*)xmalloc(sizeof(regex_t
));
1263 if (regcomp(store
.value_regex
, value_regex
,
1265 error("invalid pattern: %s", value_regex
);
1266 free(store
.value_regex
);
1272 store
.offset
[0] = 0;
1273 store
.state
= START
;
1277 * After this, store.offset will contain the *end* offset
1278 * of the last match, or remain at 0 if no match was found.
1279 * As a side effect, we make sure to transform only a valid
1280 * existing config file.
1282 if (git_config_from_file(store_aux
, config_filename
, NULL
)) {
1283 error("invalid config file %s", config_filename
);
1285 if (store
.value_regex
!= NULL
) {
1286 regfree(store
.value_regex
);
1287 free(store
.value_regex
);
1294 if (store
.value_regex
!= NULL
) {
1295 regfree(store
.value_regex
);
1296 free(store
.value_regex
);
1299 /* if nothing to unset, or too many matches, error out */
1300 if ((store
.seen
== 0 && value
== NULL
) ||
1301 (store
.seen
> 1 && multi_replace
== 0)) {
1307 contents_sz
= xsize_t(st
.st_size
);
1308 contents
= xmmap(NULL
, contents_sz
, PROT_READ
,
1309 MAP_PRIVATE
, in_fd
, 0);
1312 if (store
.seen
== 0)
1315 for (i
= 0, copy_begin
= 0; i
< store
.seen
; i
++) {
1316 if (store
.offset
[i
] == 0) {
1317 store
.offset
[i
] = copy_end
= contents_sz
;
1318 } else if (store
.state
!= KEY_SEEN
) {
1319 copy_end
= store
.offset
[i
];
1321 copy_end
= find_beginning_of_line(
1322 contents
, contents_sz
,
1323 store
.offset
[i
]-2, &new_line
);
1325 if (copy_end
> 0 && contents
[copy_end
-1] != '\n')
1328 /* write the first part of the config */
1329 if (copy_end
> copy_begin
) {
1330 if (write_in_full(fd
, contents
+ copy_begin
,
1331 copy_end
- copy_begin
) <
1332 copy_end
- copy_begin
)
1335 write_str_in_full(fd
, "\n") != 1)
1338 copy_begin
= store
.offset
[i
];
1341 /* write the pair (value == NULL means unset) */
1342 if (value
!= NULL
) {
1343 if (store
.state
== START
) {
1344 if (!store_write_section(fd
, key
))
1347 if (!store_write_pair(fd
, key
, value
))
1351 /* write the rest of the config */
1352 if (copy_begin
< contents_sz
)
1353 if (write_in_full(fd
, contents
+ copy_begin
,
1354 contents_sz
- copy_begin
) <
1355 contents_sz
- copy_begin
)
1358 munmap(contents
, contents_sz
);
1361 if (commit_lock_file(lock
) < 0) {
1362 error("could not commit config file %s", config_filename
);
1368 * lock is committed, so don't try to roll it back below.
1369 * NOTE: Since lockfile.c keeps a linked list of all created
1370 * lock_file structures, it isn't safe to free(lock). It's
1371 * better to just leave it hanging around.
1378 rollback_lock_file(lock
);
1379 free(config_filename
);
1383 ret
= write_error(lock
->filename
);
1388 static int section_name_match (const char *buf
, const char *name
)
1390 int i
= 0, j
= 0, dot
= 0;
1393 for (i
= 1; buf
[i
] && buf
[i
] != ']'; i
++) {
1394 if (!dot
&& isspace(buf
[i
])) {
1396 if (name
[j
++] != '.')
1398 for (i
++; isspace(buf
[i
]); i
++)
1404 if (buf
[i
] == '\\' && dot
)
1406 else if (buf
[i
] == '"' && dot
) {
1407 for (i
++; isspace(buf
[i
]); i
++)
1411 if (buf
[i
] != name
[j
++])
1414 if (buf
[i
] == ']' && name
[j
] == 0) {
1416 * We match, now just find the right length offset by
1417 * gobbling up any whitespace after it, as well
1420 for (; buf
[i
] && isspace(buf
[i
]); i
++)
1427 /* if new_name == NULL, the section is removed instead */
1428 int git_config_rename_section(const char *old_name
, const char *new_name
)
1430 int ret
= 0, remove
= 0;
1431 char *config_filename
;
1432 struct lock_file
*lock
= xcalloc(sizeof(struct lock_file
), 1);
1436 if (config_exclusive_filename
)
1437 config_filename
= xstrdup(config_exclusive_filename
);
1439 config_filename
= git_pathdup("config");
1440 out_fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1442 ret
= error("could not lock config file %s", config_filename
);
1446 if (!(config_file
= fopen(config_filename
, "rb"))) {
1447 /* no config file means nothing to rename, no error */
1448 goto unlock_and_out
;
1451 while (fgets(buf
, sizeof(buf
), config_file
)) {
1455 for (i
= 0; buf
[i
] && isspace(buf
[i
]); i
++)
1457 if (buf
[i
] == '[') {
1458 /* it's a section */
1459 int offset
= section_name_match(&buf
[i
], old_name
);
1462 if (new_name
== NULL
) {
1466 store
.baselen
= strlen(new_name
);
1467 if (!store_write_section(out_fd
, new_name
)) {
1468 ret
= write_error(lock
->filename
);
1472 * We wrote out the new section, with
1473 * a newline, now skip the old
1476 output
+= offset
+ i
;
1477 if (strlen(output
) > 0) {
1479 * More content means there's
1480 * a declaration to put on the
1481 * next line; indent with a
1492 length
= strlen(output
);
1493 if (write_in_full(out_fd
, output
, length
) != length
) {
1494 ret
= write_error(lock
->filename
);
1498 fclose(config_file
);
1500 if (commit_lock_file(lock
) < 0)
1501 ret
= error("could not commit config file %s", config_filename
);
1503 free(config_filename
);
1508 * Call this to report error for your variable that should not
1509 * get a boolean value (i.e. "[my] var" means "true").
1511 int config_error_nonbool(const char *var
)
1513 return error("Missing value for '%s'", var
);