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
;
25 struct config_item
*next
;
29 static struct config_item
*config_parameters
;
30 static struct config_item
**config_parameters_tail
= &config_parameters
;
32 static void lowercase(char *p
)
38 void git_config_push_parameter(const char *text
)
40 struct strbuf env
= STRBUF_INIT
;
41 const char *old
= getenv(CONFIG_DATA_ENVIRONMENT
);
43 strbuf_addstr(&env
, old
);
44 strbuf_addch(&env
, ' ');
46 sq_quote_buf(&env
, text
);
47 setenv(CONFIG_DATA_ENVIRONMENT
, env
.buf
, 1);
51 int git_config_parse_parameter(const char *text
)
53 struct config_item
*ct
;
54 struct strbuf tmp
= STRBUF_INIT
;
56 strbuf_addstr(&tmp
, text
);
57 pair
= strbuf_split(&tmp
, '=');
58 if (pair
[0]->len
&& pair
[0]->buf
[pair
[0]->len
- 1] == '=')
59 strbuf_setlen(pair
[0], pair
[0]->len
- 1);
62 strbuf_list_free(pair
);
65 ct
= xcalloc(1, sizeof(struct config_item
));
66 ct
->name
= strbuf_detach(pair
[0], NULL
);
69 ct
->value
= strbuf_detach(pair
[1], NULL
);
71 strbuf_list_free(pair
);
73 *config_parameters_tail
= ct
;
74 config_parameters_tail
= &ct
->next
;
78 int git_config_parse_environment(void) {
79 const char *env
= getenv(CONFIG_DATA_ENVIRONMENT
);
81 const char **argv
= NULL
;
82 int nr
= 0, alloc
= 0;
87 /* sq_dequote will write over it */
90 if (sq_dequote_to_argv(envw
, &argv
, &nr
, &alloc
) < 0) {
92 return error("bogus format in " CONFIG_DATA_ENVIRONMENT
);
95 for (i
= 0; i
< nr
; i
++) {
96 if (git_config_parse_parameter(argv
[i
]) < 0) {
97 error("bogus config parameter: %s", argv
[i
]);
109 static int get_next_char(void)
115 if ((f
= config_file
) != NULL
) {
118 /* DOS like systems */
135 static char *parse_value(void)
137 static char value
[1024];
138 int quote
= 0, comment
= 0, len
= 0, space
= 0;
141 int c
= get_next_char();
142 if (len
>= sizeof(value
) - 1)
152 if (isspace(c
) && !quote
) {
158 if (c
== ';' || c
== '#') {
163 for (; space
; space
--)
179 /* Some characters escape as themselves */
182 /* Reject unknown escape sequences */
197 static inline int iskeychar(int c
)
199 return isalnum(c
) || c
== '-';
202 static int get_value(config_fn_t fn
, void *data
, char *name
, unsigned int len
)
207 /* Get the full name */
214 name
[len
++] = tolower(c
);
219 while (c
== ' ' || c
== '\t')
226 value
= parse_value();
230 return fn(name
, value
, data
);
233 static int get_extended_base_var(char *name
, int baselen
, int c
)
239 } while (isspace(c
));
241 /* We require the format to be '[base "extension"]' */
244 name
[baselen
++] = '.';
247 int c
= get_next_char();
258 if (baselen
> MAXNAME
/ 2)
263 if (get_next_char() != ']')
268 static int get_base_var(char *name
)
273 int c
= get_next_char();
279 return get_extended_base_var(name
, baselen
, c
);
280 if (!iskeychar(c
) && c
!= '.')
282 if (baselen
> MAXNAME
/ 2)
284 name
[baselen
++] = tolower(c
);
288 static int git_parse_file(config_fn_t fn
, void *data
)
292 static char var
[MAXNAME
];
294 /* U+FEFF Byte Order Mark in UTF8 */
295 static const unsigned char *utf8_bom
= (unsigned char *) "\xef\xbb\xbf";
296 const unsigned char *bomptr
= utf8_bom
;
299 int c
= get_next_char();
300 if (bomptr
&& *bomptr
) {
301 /* We are at the file beginning; skip UTF8-encoded BOM
302 * if present. Sane editors won't put this in on their
303 * own, but e.g. Windows Notepad will do it happily. */
304 if ((unsigned char) c
== *bomptr
) {
308 /* Do not tolerate partial BOM. */
309 if (bomptr
!= utf8_bom
)
311 /* No BOM at file beginning. Cool. */
321 if (comment
|| isspace(c
))
323 if (c
== '#' || c
== ';') {
328 baselen
= get_base_var(var
);
331 var
[baselen
++] = '.';
337 var
[baselen
] = tolower(c
);
338 if (get_value(fn
, data
, var
, baselen
+1) < 0)
341 die("bad config file line %d in %s", config_linenr
, config_file_name
);
344 static int parse_unit_factor(const char *end
, unsigned long *val
)
348 else if (!strcasecmp(end
, "k")) {
352 else if (!strcasecmp(end
, "m")) {
356 else if (!strcasecmp(end
, "g")) {
357 *val
*= 1024 * 1024 * 1024;
363 static int git_parse_long(const char *value
, long *ret
)
365 if (value
&& *value
) {
367 long val
= strtol(value
, &end
, 0);
368 unsigned long factor
= 1;
369 if (!parse_unit_factor(end
, &factor
))
377 int git_parse_ulong(const char *value
, unsigned long *ret
)
379 if (value
&& *value
) {
381 unsigned long val
= strtoul(value
, &end
, 0);
382 if (!parse_unit_factor(end
, &val
))
390 static void die_bad_config(const char *name
)
392 if (config_file_name
)
393 die("bad config value for '%s' in %s", name
, config_file_name
);
394 die("bad config value for '%s'", name
);
397 int git_config_int(const char *name
, const char *value
)
400 if (!git_parse_long(value
, &ret
))
401 die_bad_config(name
);
405 unsigned long git_config_ulong(const char *name
, const char *value
)
408 if (!git_parse_ulong(value
, &ret
))
409 die_bad_config(name
);
413 static int git_config_maybe_bool_text(const char *name
, const char *value
)
419 if (!strcasecmp(value
, "true")
420 || !strcasecmp(value
, "yes")
421 || !strcasecmp(value
, "on"))
423 if (!strcasecmp(value
, "false")
424 || !strcasecmp(value
, "no")
425 || !strcasecmp(value
, "off"))
430 int git_config_maybe_bool(const char *name
, const char *value
)
432 long v
= git_config_maybe_bool_text(name
, value
);
435 if (git_parse_long(value
, &v
))
440 int git_config_bool_or_int(const char *name
, const char *value
, int *is_bool
)
442 int v
= git_config_maybe_bool_text(name
, value
);
448 return git_config_int(name
, value
);
451 int git_config_bool(const char *name
, const char *value
)
454 return !!git_config_bool_or_int(name
, value
, &discard
);
457 int git_config_string(const char **dest
, const char *var
, const char *value
)
460 return config_error_nonbool(var
);
461 *dest
= xstrdup(value
);
465 int git_config_pathname(const char **dest
, const char *var
, const char *value
)
468 return config_error_nonbool(var
);
469 *dest
= expand_user_path(value
);
471 die("Failed to expand user dir in: '%s'", value
);
475 static int git_default_core_config(const char *var
, const char *value
)
477 /* This needs a better name */
478 if (!strcmp(var
, "core.filemode")) {
479 trust_executable_bit
= git_config_bool(var
, value
);
482 if (!strcmp(var
, "core.trustctime")) {
483 trust_ctime
= git_config_bool(var
, value
);
487 if (!strcmp(var
, "core.quotepath")) {
488 quote_path_fully
= git_config_bool(var
, value
);
492 if (!strcmp(var
, "core.symlinks")) {
493 has_symlinks
= git_config_bool(var
, value
);
497 if (!strcmp(var
, "core.ignorecase")) {
498 ignore_case
= git_config_bool(var
, value
);
502 if (!strcmp(var
, "core.bare")) {
503 is_bare_repository_cfg
= git_config_bool(var
, value
);
507 if (!strcmp(var
, "core.ignorestat")) {
508 assume_unchanged
= git_config_bool(var
, value
);
512 if (!strcmp(var
, "core.prefersymlinkrefs")) {
513 prefer_symlink_refs
= git_config_bool(var
, value
);
517 if (!strcmp(var
, "core.logallrefupdates")) {
518 log_all_ref_updates
= git_config_bool(var
, value
);
522 if (!strcmp(var
, "core.warnambiguousrefs")) {
523 warn_ambiguous_refs
= git_config_bool(var
, value
);
527 if (!strcmp(var
, "core.loosecompression")) {
528 int level
= git_config_int(var
, value
);
530 level
= Z_DEFAULT_COMPRESSION
;
531 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
532 die("bad zlib compression level %d", level
);
533 zlib_compression_level
= level
;
534 zlib_compression_seen
= 1;
538 if (!strcmp(var
, "core.compression")) {
539 int level
= git_config_int(var
, value
);
541 level
= Z_DEFAULT_COMPRESSION
;
542 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
543 die("bad zlib compression level %d", level
);
544 core_compression_level
= level
;
545 core_compression_seen
= 1;
546 if (!zlib_compression_seen
)
547 zlib_compression_level
= level
;
551 if (!strcmp(var
, "core.packedgitwindowsize")) {
552 int pgsz_x2
= getpagesize() * 2;
553 packed_git_window_size
= git_config_int(var
, value
);
555 /* This value must be multiple of (pagesize * 2) */
556 packed_git_window_size
/= pgsz_x2
;
557 if (packed_git_window_size
< 1)
558 packed_git_window_size
= 1;
559 packed_git_window_size
*= pgsz_x2
;
563 if (!strcmp(var
, "core.packedgitlimit")) {
564 packed_git_limit
= git_config_int(var
, value
);
568 if (!strcmp(var
, "core.deltabasecachelimit")) {
569 delta_base_cache_limit
= git_config_int(var
, value
);
573 if (!strcmp(var
, "core.autocrlf")) {
574 if (value
&& !strcasecmp(value
, "input")) {
576 return error("core.autocrlf=input conflicts with core.eol=crlf");
577 auto_crlf
= AUTO_CRLF_INPUT
;
580 auto_crlf
= git_config_bool(var
, value
);
584 if (!strcmp(var
, "core.safecrlf")) {
585 if (value
&& !strcasecmp(value
, "warn")) {
586 safe_crlf
= SAFE_CRLF_WARN
;
589 safe_crlf
= git_config_bool(var
, value
);
593 if (!strcmp(var
, "core.eol")) {
594 if (value
&& !strcasecmp(value
, "lf"))
596 else if (value
&& !strcasecmp(value
, "crlf"))
598 else if (value
&& !strcasecmp(value
, "native"))
602 if (eol
== EOL_CRLF
&& auto_crlf
== AUTO_CRLF_INPUT
)
603 return error("core.autocrlf=input conflicts with core.eol=crlf");
607 if (!strcmp(var
, "core.notesref")) {
608 notes_ref_name
= xstrdup(value
);
612 if (!strcmp(var
, "core.pager"))
613 return git_config_string(&pager_program
, var
, value
);
615 if (!strcmp(var
, "core.editor"))
616 return git_config_string(&editor_program
, var
, value
);
618 if (!strcmp(var
, "core.askpass"))
619 return git_config_string(&askpass_program
, var
, value
);
621 if (!strcmp(var
, "core.excludesfile"))
622 return git_config_pathname(&excludes_file
, var
, value
);
624 if (!strcmp(var
, "core.whitespace")) {
626 return config_error_nonbool(var
);
627 whitespace_rule_cfg
= parse_whitespace_rule(value
);
631 if (!strcmp(var
, "core.fsyncobjectfiles")) {
632 fsync_object_files
= git_config_bool(var
, value
);
636 if (!strcmp(var
, "core.preloadindex")) {
637 core_preload_index
= git_config_bool(var
, value
);
641 if (!strcmp(var
, "core.createobject")) {
642 if (!strcmp(value
, "rename"))
643 object_creation_mode
= OBJECT_CREATION_USES_RENAMES
;
644 else if (!strcmp(value
, "link"))
645 object_creation_mode
= OBJECT_CREATION_USES_HARDLINKS
;
647 die("Invalid mode for object creation: %s", value
);
651 if (!strcmp(var
, "core.sparsecheckout")) {
652 core_apply_sparse_checkout
= git_config_bool(var
, value
);
656 /* Add other config variables here and to Documentation/config.txt. */
660 static int git_default_user_config(const char *var
, const char *value
)
662 if (!strcmp(var
, "user.name")) {
664 return config_error_nonbool(var
);
665 strlcpy(git_default_name
, value
, sizeof(git_default_name
));
666 user_ident_explicitly_given
|= IDENT_NAME_GIVEN
;
670 if (!strcmp(var
, "user.email")) {
672 return config_error_nonbool(var
);
673 strlcpy(git_default_email
, value
, sizeof(git_default_email
));
674 user_ident_explicitly_given
|= IDENT_MAIL_GIVEN
;
678 /* Add other config variables here and to Documentation/config.txt. */
682 static int git_default_i18n_config(const char *var
, const char *value
)
684 if (!strcmp(var
, "i18n.commitencoding"))
685 return git_config_string(&git_commit_encoding
, var
, value
);
687 if (!strcmp(var
, "i18n.logoutputencoding"))
688 return git_config_string(&git_log_output_encoding
, var
, value
);
690 /* Add other config variables here and to Documentation/config.txt. */
694 static int git_default_branch_config(const char *var
, const char *value
)
696 if (!strcmp(var
, "branch.autosetupmerge")) {
697 if (value
&& !strcasecmp(value
, "always")) {
698 git_branch_track
= BRANCH_TRACK_ALWAYS
;
701 git_branch_track
= git_config_bool(var
, value
);
704 if (!strcmp(var
, "branch.autosetuprebase")) {
706 return config_error_nonbool(var
);
707 else if (!strcmp(value
, "never"))
708 autorebase
= AUTOREBASE_NEVER
;
709 else if (!strcmp(value
, "local"))
710 autorebase
= AUTOREBASE_LOCAL
;
711 else if (!strcmp(value
, "remote"))
712 autorebase
= AUTOREBASE_REMOTE
;
713 else if (!strcmp(value
, "always"))
714 autorebase
= AUTOREBASE_ALWAYS
;
716 return error("Malformed value for %s", var
);
720 /* Add other config variables here and to Documentation/config.txt. */
724 static int git_default_push_config(const char *var
, const char *value
)
726 if (!strcmp(var
, "push.default")) {
728 return config_error_nonbool(var
);
729 else if (!strcmp(value
, "nothing"))
730 push_default
= PUSH_DEFAULT_NOTHING
;
731 else if (!strcmp(value
, "matching"))
732 push_default
= PUSH_DEFAULT_MATCHING
;
733 else if (!strcmp(value
, "upstream"))
734 push_default
= PUSH_DEFAULT_UPSTREAM
;
735 else if (!strcmp(value
, "tracking")) /* deprecated */
736 push_default
= PUSH_DEFAULT_UPSTREAM
;
737 else if (!strcmp(value
, "current"))
738 push_default
= PUSH_DEFAULT_CURRENT
;
740 error("Malformed value for %s: %s", var
, value
);
741 return error("Must be one of nothing, matching, "
742 "tracking or current.");
747 /* Add other config variables here and to Documentation/config.txt. */
751 static int git_default_mailmap_config(const char *var
, const char *value
)
753 if (!strcmp(var
, "mailmap.file"))
754 return git_config_string(&git_mailmap_file
, var
, value
);
756 /* Add other config variables here and to Documentation/config.txt. */
760 int git_default_config(const char *var
, const char *value
, void *dummy
)
762 if (!prefixcmp(var
, "core."))
763 return git_default_core_config(var
, value
);
765 if (!prefixcmp(var
, "user."))
766 return git_default_user_config(var
, value
);
768 if (!prefixcmp(var
, "i18n."))
769 return git_default_i18n_config(var
, value
);
771 if (!prefixcmp(var
, "branch."))
772 return git_default_branch_config(var
, value
);
774 if (!prefixcmp(var
, "push."))
775 return git_default_push_config(var
, value
);
777 if (!prefixcmp(var
, "mailmap."))
778 return git_default_mailmap_config(var
, value
);
780 if (!prefixcmp(var
, "advice."))
781 return git_default_advice_config(var
, value
);
783 if (!strcmp(var
, "pager.color") || !strcmp(var
, "color.pager")) {
784 pager_use_color
= git_config_bool(var
,value
);
788 /* Add other config variables here and to Documentation/config.txt. */
792 int git_config_from_file(config_fn_t fn
, const char *filename
, void *data
)
795 FILE *f
= fopen(filename
, "r");
800 config_file_name
= filename
;
803 ret
= git_parse_file(fn
, data
);
805 config_file_name
= NULL
;
810 const char *git_etc_gitconfig(void)
812 static const char *system_wide
;
814 system_wide
= system_path(ETC_GITCONFIG
);
818 int git_env_bool(const char *k
, int def
)
820 const char *v
= getenv(k
);
821 return v
? git_config_bool(k
, v
) : def
;
824 int git_config_system(void)
826 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
829 int git_config_global(void)
831 return !git_env_bool("GIT_CONFIG_NOGLOBAL", 0);
834 int git_config_from_parameters(config_fn_t fn
, void *data
)
836 static int loaded_environment
;
837 const struct config_item
*ct
;
839 if (!loaded_environment
) {
840 if (git_config_parse_environment() < 0)
842 loaded_environment
= 1;
844 for (ct
= config_parameters
; ct
; ct
= ct
->next
)
845 if (fn(ct
->name
, ct
->value
, data
) < 0)
850 int git_config_early(config_fn_t fn
, void *data
, const char *repo_config
)
852 int ret
= 0, found
= 0;
853 const char *home
= NULL
;
855 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
856 if (config_exclusive_filename
)
857 return git_config_from_file(fn
, config_exclusive_filename
, data
);
858 if (git_config_system() && !access(git_etc_gitconfig(), R_OK
)) {
859 ret
+= git_config_from_file(fn
, git_etc_gitconfig(),
864 home
= getenv("HOME");
865 if (git_config_global() && home
) {
866 char *user_config
= xstrdup(mkpath("%s/.gitconfig", home
));
867 if (!access(user_config
, R_OK
)) {
868 ret
+= git_config_from_file(fn
, user_config
, data
);
874 if (repo_config
&& !access(repo_config
, R_OK
)) {
875 ret
+= git_config_from_file(fn
, repo_config
, data
);
879 ret
+= git_config_from_parameters(fn
, data
);
880 if (config_parameters
)
883 return ret
== 0 ? found
: ret
;
886 int git_config(config_fn_t fn
, void *data
)
888 char *repo_config
= NULL
;
891 repo_config
= git_pathdup("config");
892 ret
= git_config_early(fn
, data
, repo_config
);
899 * Find all the stuff for git_config_set() below.
902 #define MAX_MATCHES 512
908 regex_t
*value_regex
;
910 size_t offset
[MAX_MATCHES
];
911 enum { START
, SECTION_SEEN
, SECTION_END_SEEN
, KEY_SEEN
} state
;
915 static int matches(const char *key
, const char *value
)
917 return !strcmp(key
, store
.key
) &&
918 (store
.value_regex
== NULL
||
919 (store
.do_not_match
^
920 !regexec(store
.value_regex
, value
, 0, NULL
, 0)));
923 static int store_aux(const char *key
, const char *value
, void *cb
)
928 switch (store
.state
) {
930 if (matches(key
, value
)) {
931 if (store
.seen
== 1 && store
.multi_replace
== 0) {
932 warning("%s has multiple values", key
);
933 } else if (store
.seen
>= MAX_MATCHES
) {
934 error("too many matches for %s", key
);
938 store
.offset
[store
.seen
] = ftell(config_file
);
944 * What we are looking for is in store.key (both
945 * section and var), and its section part is baselen
946 * long. We found key (again, both section and var).
947 * We would want to know if this key is in the same
948 * section as what we are looking for. We already
949 * know we are in the same section as what should
952 ep
= strrchr(key
, '.');
953 section_len
= ep
- key
;
955 if ((section_len
!= store
.baselen
) ||
956 memcmp(key
, store
.key
, section_len
+1)) {
957 store
.state
= SECTION_END_SEEN
;
962 * Do not increment matches: this is no match, but we
963 * just made sure we are in the desired section.
965 store
.offset
[store
.seen
] = ftell(config_file
);
967 case SECTION_END_SEEN
:
969 if (matches(key
, value
)) {
970 store
.offset
[store
.seen
] = ftell(config_file
);
971 store
.state
= KEY_SEEN
;
974 if (strrchr(key
, '.') - key
== store
.baselen
&&
975 !strncmp(key
, store
.key
, store
.baselen
)) {
976 store
.state
= SECTION_SEEN
;
977 store
.offset
[store
.seen
] = ftell(config_file
);
984 static int write_error(const char *filename
)
986 error("failed to write new configuration file %s", filename
);
988 /* Same error code as "failed to rename". */
992 static int store_write_section(int fd
, const char *key
)
996 struct strbuf sb
= STRBUF_INIT
;
998 dot
= memchr(key
, '.', store
.baselen
);
1000 strbuf_addf(&sb
, "[%.*s \"", (int)(dot
- key
), key
);
1001 for (i
= dot
- key
+ 1; i
< store
.baselen
; i
++) {
1002 if (key
[i
] == '"' || key
[i
] == '\\')
1003 strbuf_addch(&sb
, '\\');
1004 strbuf_addch(&sb
, key
[i
]);
1006 strbuf_addstr(&sb
, "\"]\n");
1008 strbuf_addf(&sb
, "[%.*s]\n", store
.baselen
, key
);
1011 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1012 strbuf_release(&sb
);
1017 static int store_write_pair(int fd
, const char *key
, const char *value
)
1020 int length
= strlen(key
+ store
.baselen
+ 1);
1021 const char *quote
= "";
1022 struct strbuf sb
= STRBUF_INIT
;
1025 * Check to see if the value needs to be surrounded with a dq pair.
1026 * Note that problematic characters are always backslash-quoted; this
1027 * check is about not losing leading or trailing SP and strings that
1028 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1029 * configuration parser.
1031 if (value
[0] == ' ')
1033 for (i
= 0; value
[i
]; i
++)
1034 if (value
[i
] == ';' || value
[i
] == '#')
1036 if (i
&& value
[i
- 1] == ' ')
1039 strbuf_addf(&sb
, "\t%.*s = %s",
1040 length
, key
+ store
.baselen
+ 1, quote
);
1042 for (i
= 0; value
[i
]; i
++)
1045 strbuf_addstr(&sb
, "\\n");
1048 strbuf_addstr(&sb
, "\\t");
1052 strbuf_addch(&sb
, '\\');
1054 strbuf_addch(&sb
, value
[i
]);
1057 strbuf_addf(&sb
, "%s\n", quote
);
1059 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1060 strbuf_release(&sb
);
1065 static ssize_t
find_beginning_of_line(const char *contents
, size_t size
,
1066 size_t offset_
, int *found_bracket
)
1068 size_t equal_offset
= size
, bracket_offset
= size
;
1072 for (offset
= offset_
-2; offset
> 0
1073 && contents
[offset
] != '\n'; offset
--)
1074 switch (contents
[offset
]) {
1075 case '=': equal_offset
= offset
; break;
1076 case ']': bracket_offset
= offset
; break;
1078 if (offset
> 0 && contents
[offset
-1] == '\\') {
1082 if (bracket_offset
< equal_offset
) {
1084 offset
= bracket_offset
+1;
1091 int git_config_set(const char *key
, const char *value
)
1093 return git_config_set_multivar(key
, value
, NULL
, 0);
1097 * Auxiliary function to sanity-check and split the key into the section
1098 * identifier and variable name.
1100 * Returns 0 on success, -1 when there is an invalid character in the key and
1101 * -2 if there is no section name in the key.
1103 * store_key - pointer to char* which will hold a copy of the key with
1104 * lowercase section and variable name
1105 * baselen - pointer to int which will hold the length of the
1106 * section + subsection part, can be NULL
1108 int git_config_parse_key(const char *key
, char **store_key
, int *baselen_
)
1110 int i
, dot
, baselen
;
1111 const char *last_dot
= strrchr(key
, '.');
1114 * Since "key" actually contains the section name and the real
1115 * key name separated by a dot, we have to know where the dot is.
1118 if (last_dot
== NULL
|| last_dot
== key
) {
1119 error("key does not contain a section: %s", key
);
1124 error("key does not contain variable name: %s", key
);
1128 baselen
= last_dot
- key
;
1130 *baselen_
= baselen
;
1133 * Validate the key and while at it, lower case it for matching.
1135 *store_key
= xmalloc(strlen(key
) + 1);
1138 for (i
= 0; key
[i
]; i
++) {
1139 unsigned char c
= key
[i
];
1142 /* Leave the extended basename untouched.. */
1143 if (!dot
|| i
> baselen
) {
1144 if (!iskeychar(c
) ||
1145 (i
== baselen
+ 1 && !isalpha(c
))) {
1146 error("invalid key: %s", key
);
1147 goto out_free_ret_1
;
1150 } else if (c
== '\n') {
1151 error("invalid key (newline): %s", key
);
1152 goto out_free_ret_1
;
1154 (*store_key
)[i
] = c
;
1156 (*store_key
)[i
] = 0;
1166 * If value==NULL, unset in (remove from) config,
1167 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1168 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1169 * else all matching key/values (regardless how many) are removed,
1170 * before the new pair is written.
1172 * Returns 0 on success.
1174 * This function does this:
1176 * - it locks the config file by creating ".git/config.lock"
1178 * - it then parses the config using store_aux() as validator to find
1179 * the position on the key/value pair to replace. If it is to be unset,
1180 * it must be found exactly once.
1182 * - the config file is mmap()ed and the part before the match (if any) is
1183 * written to the lock file, then the changed part and the rest.
1185 * - the config file is removed and the lock file rename()d to it.
1188 int git_config_set_multivar(const char *key
, const char *value
,
1189 const char *value_regex
, int multi_replace
)
1193 char *config_filename
;
1194 struct lock_file
*lock
= NULL
;
1196 if (config_exclusive_filename
)
1197 config_filename
= xstrdup(config_exclusive_filename
);
1199 config_filename
= git_pathdup("config");
1201 /* parse-key returns negative; flip the sign to feed exit(3) */
1202 ret
= 0 - git_config_parse_key(key
, &store
.key
, &store
.baselen
);
1206 store
.multi_replace
= multi_replace
;
1210 * The lock serves a purpose in addition to locking: the new
1211 * contents of .git/config will be written into it.
1213 lock
= xcalloc(sizeof(struct lock_file
), 1);
1214 fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1216 error("could not lock config file %s: %s", config_filename
, strerror(errno
));
1223 * If .git/config does not exist yet, write a minimal version.
1225 in_fd
= open(config_filename
, O_RDONLY
);
1229 if ( ENOENT
!= errno
) {
1230 error("opening %s: %s", config_filename
,
1232 ret
= 3; /* same as "invalid config file" */
1235 /* if nothing to unset, error out */
1236 if (value
== NULL
) {
1241 store
.key
= (char *)key
;
1242 if (!store_write_section(fd
, key
) ||
1243 !store_write_pair(fd
, key
, value
))
1248 size_t contents_sz
, copy_begin
, copy_end
;
1249 int i
, new_line
= 0;
1251 if (value_regex
== NULL
)
1252 store
.value_regex
= NULL
;
1254 if (value_regex
[0] == '!') {
1255 store
.do_not_match
= 1;
1258 store
.do_not_match
= 0;
1260 store
.value_regex
= (regex_t
*)xmalloc(sizeof(regex_t
));
1261 if (regcomp(store
.value_regex
, value_regex
,
1263 error("invalid pattern: %s", value_regex
);
1264 free(store
.value_regex
);
1270 store
.offset
[0] = 0;
1271 store
.state
= START
;
1275 * After this, store.offset will contain the *end* offset
1276 * of the last match, or remain at 0 if no match was found.
1277 * As a side effect, we make sure to transform only a valid
1278 * existing config file.
1280 if (git_config_from_file(store_aux
, config_filename
, NULL
)) {
1281 error("invalid config file %s", config_filename
);
1283 if (store
.value_regex
!= NULL
) {
1284 regfree(store
.value_regex
);
1285 free(store
.value_regex
);
1292 if (store
.value_regex
!= NULL
) {
1293 regfree(store
.value_regex
);
1294 free(store
.value_regex
);
1297 /* if nothing to unset, or too many matches, error out */
1298 if ((store
.seen
== 0 && value
== NULL
) ||
1299 (store
.seen
> 1 && multi_replace
== 0)) {
1305 contents_sz
= xsize_t(st
.st_size
);
1306 contents
= xmmap(NULL
, contents_sz
, PROT_READ
,
1307 MAP_PRIVATE
, in_fd
, 0);
1310 if (store
.seen
== 0)
1313 for (i
= 0, copy_begin
= 0; i
< store
.seen
; i
++) {
1314 if (store
.offset
[i
] == 0) {
1315 store
.offset
[i
] = copy_end
= contents_sz
;
1316 } else if (store
.state
!= KEY_SEEN
) {
1317 copy_end
= store
.offset
[i
];
1319 copy_end
= find_beginning_of_line(
1320 contents
, contents_sz
,
1321 store
.offset
[i
]-2, &new_line
);
1323 if (copy_end
> 0 && contents
[copy_end
-1] != '\n')
1326 /* write the first part of the config */
1327 if (copy_end
> copy_begin
) {
1328 if (write_in_full(fd
, contents
+ copy_begin
,
1329 copy_end
- copy_begin
) <
1330 copy_end
- copy_begin
)
1333 write_str_in_full(fd
, "\n") != 1)
1336 copy_begin
= store
.offset
[i
];
1339 /* write the pair (value == NULL means unset) */
1340 if (value
!= NULL
) {
1341 if (store
.state
== START
) {
1342 if (!store_write_section(fd
, key
))
1345 if (!store_write_pair(fd
, key
, value
))
1349 /* write the rest of the config */
1350 if (copy_begin
< contents_sz
)
1351 if (write_in_full(fd
, contents
+ copy_begin
,
1352 contents_sz
- copy_begin
) <
1353 contents_sz
- copy_begin
)
1356 munmap(contents
, contents_sz
);
1359 if (commit_lock_file(lock
) < 0) {
1360 error("could not commit config file %s", config_filename
);
1366 * lock is committed, so don't try to roll it back below.
1367 * NOTE: Since lockfile.c keeps a linked list of all created
1368 * lock_file structures, it isn't safe to free(lock). It's
1369 * better to just leave it hanging around.
1376 rollback_lock_file(lock
);
1377 free(config_filename
);
1381 ret
= write_error(lock
->filename
);
1386 static int section_name_match (const char *buf
, const char *name
)
1388 int i
= 0, j
= 0, dot
= 0;
1391 for (i
= 1; buf
[i
] && buf
[i
] != ']'; i
++) {
1392 if (!dot
&& isspace(buf
[i
])) {
1394 if (name
[j
++] != '.')
1396 for (i
++; isspace(buf
[i
]); i
++)
1402 if (buf
[i
] == '\\' && dot
)
1404 else if (buf
[i
] == '"' && dot
) {
1405 for (i
++; isspace(buf
[i
]); i
++)
1409 if (buf
[i
] != name
[j
++])
1412 if (buf
[i
] == ']' && name
[j
] == 0) {
1414 * We match, now just find the right length offset by
1415 * gobbling up any whitespace after it, as well
1418 for (; buf
[i
] && isspace(buf
[i
]); i
++)
1425 /* if new_name == NULL, the section is removed instead */
1426 int git_config_rename_section(const char *old_name
, const char *new_name
)
1428 int ret
= 0, remove
= 0;
1429 char *config_filename
;
1430 struct lock_file
*lock
= xcalloc(sizeof(struct lock_file
), 1);
1434 if (config_exclusive_filename
)
1435 config_filename
= xstrdup(config_exclusive_filename
);
1437 config_filename
= git_pathdup("config");
1438 out_fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1440 ret
= error("could not lock config file %s", config_filename
);
1444 if (!(config_file
= fopen(config_filename
, "rb"))) {
1445 /* no config file means nothing to rename, no error */
1446 goto unlock_and_out
;
1449 while (fgets(buf
, sizeof(buf
), config_file
)) {
1453 for (i
= 0; buf
[i
] && isspace(buf
[i
]); i
++)
1455 if (buf
[i
] == '[') {
1456 /* it's a section */
1457 int offset
= section_name_match(&buf
[i
], old_name
);
1460 if (new_name
== NULL
) {
1464 store
.baselen
= strlen(new_name
);
1465 if (!store_write_section(out_fd
, new_name
)) {
1466 ret
= write_error(lock
->filename
);
1470 * We wrote out the new section, with
1471 * a newline, now skip the old
1474 output
+= offset
+ i
;
1475 if (strlen(output
) > 0) {
1477 * More content means there's
1478 * a declaration to put on the
1479 * next line; indent with a
1490 length
= strlen(output
);
1491 if (write_in_full(out_fd
, output
, length
) != length
) {
1492 ret
= write_error(lock
->filename
);
1496 fclose(config_file
);
1498 if (commit_lock_file(lock
) < 0)
1499 ret
= error("could not commit config file %s", config_filename
);
1501 free(config_filename
);
1506 * Call this to report error for your variable that should not
1507 * get a boolean value (i.e. "[my] var" means "true").
1509 int config_error_nonbool(const char *var
)
1511 return error("Missing value for '%s'", var
);