2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
15 typedef struct config_file
{
16 struct config_file
*prev
;
25 static config_file
*cf
;
27 static int zlib_compression_seen
;
29 const char *config_exclusive_filename
= NULL
;
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
,
51 config_fn_t fn
, void *data
)
54 pair
= strbuf_split_str(text
, '=', 2);
56 return error("bogus config parameter: %s", text
);
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
);
62 return error("bogus config parameter: %s", text
);
64 lowercase(pair
[0]->buf
);
65 if (fn(pair
[0]->buf
, pair
[1] ? pair
[1]->buf
: NULL
, data
) < 0) {
66 strbuf_list_free(pair
);
69 strbuf_list_free(pair
);
73 int git_config_from_parameters(config_fn_t fn
, void *data
)
75 const char *env
= getenv(CONFIG_DATA_ENVIRONMENT
);
77 const char **argv
= NULL
;
78 int nr
= 0, alloc
= 0;
83 /* sq_dequote will write over it */
86 if (sq_dequote_to_argv(envw
, &argv
, &nr
, &alloc
) < 0) {
88 return error("bogus format in " CONFIG_DATA_ENVIRONMENT
);
91 for (i
= 0; i
< nr
; i
++) {
92 if (git_config_parse_parameter(argv
[i
], fn
, data
) < 0) {
104 static int get_next_char(void)
110 if (cf
&& ((f
= cf
->f
) != NULL
)) {
113 /* DOS like systems */
130 static char *parse_value(void)
132 int quote
= 0, comment
= 0, space
= 0;
134 strbuf_reset(&cf
->value
);
136 int c
= get_next_char();
140 return cf
->value
.buf
;
144 if (isspace(c
) && !quote
) {
150 if (c
== ';' || c
== '#') {
155 for (; space
; space
--)
156 strbuf_addch(&cf
->value
, ' ');
171 /* Some characters escape as themselves */
174 /* Reject unknown escape sequences */
178 strbuf_addch(&cf
->value
, c
);
185 strbuf_addch(&cf
->value
, c
);
189 static inline int iskeychar(int c
)
191 return isalnum(c
) || c
== '-';
194 static int get_value(config_fn_t fn
, void *data
, char *name
, unsigned int len
)
199 /* Get the full name */
206 name
[len
++] = tolower(c
);
211 while (c
== ' ' || c
== '\t')
218 value
= parse_value();
222 return fn(name
, value
, data
);
225 static int get_extended_base_var(char *name
, int baselen
, int c
)
231 } while (isspace(c
));
233 /* We require the format to be '[base "extension"]' */
236 name
[baselen
++] = '.';
239 int c
= get_next_char();
250 if (baselen
> MAXNAME
/ 2)
255 if (get_next_char() != ']')
260 static int get_base_var(char *name
)
265 int c
= get_next_char();
271 return get_extended_base_var(name
, baselen
, c
);
272 if (!iskeychar(c
) && c
!= '.')
274 if (baselen
> MAXNAME
/ 2)
276 name
[baselen
++] = tolower(c
);
280 static int git_parse_file(config_fn_t fn
, void *data
)
286 /* U+FEFF Byte Order Mark in UTF8 */
287 static const unsigned char *utf8_bom
= (unsigned char *) "\xef\xbb\xbf";
288 const unsigned char *bomptr
= utf8_bom
;
291 int c
= get_next_char();
292 if (bomptr
&& *bomptr
) {
293 /* We are at the file beginning; skip UTF8-encoded BOM
294 * if present. Sane editors won't put this in on their
295 * own, but e.g. Windows Notepad will do it happily. */
296 if ((unsigned char) c
== *bomptr
) {
300 /* Do not tolerate partial BOM. */
301 if (bomptr
!= utf8_bom
)
303 /* No BOM at file beginning. Cool. */
313 if (comment
|| isspace(c
))
315 if (c
== '#' || c
== ';') {
320 baselen
= get_base_var(var
);
323 var
[baselen
++] = '.';
329 var
[baselen
] = tolower(c
);
330 if (get_value(fn
, data
, var
, baselen
+1) < 0)
333 die("bad config file line %d in %s", cf
->linenr
, cf
->name
);
336 static int parse_unit_factor(const char *end
, unsigned long *val
)
340 else if (!strcasecmp(end
, "k")) {
344 else if (!strcasecmp(end
, "m")) {
348 else if (!strcasecmp(end
, "g")) {
349 *val
*= 1024 * 1024 * 1024;
355 static int git_parse_long(const char *value
, long *ret
)
357 if (value
&& *value
) {
359 long val
= strtol(value
, &end
, 0);
360 unsigned long factor
= 1;
361 if (!parse_unit_factor(end
, &factor
))
369 int git_parse_ulong(const char *value
, unsigned long *ret
)
371 if (value
&& *value
) {
373 unsigned long val
= strtoul(value
, &end
, 0);
374 if (!parse_unit_factor(end
, &val
))
382 static void die_bad_config(const char *name
)
385 die("bad config value for '%s' in %s", name
, cf
->name
);
386 die("bad config value for '%s'", name
);
389 int git_config_int(const char *name
, const char *value
)
392 if (!git_parse_long(value
, &ret
))
393 die_bad_config(name
);
397 unsigned long git_config_ulong(const char *name
, const char *value
)
400 if (!git_parse_ulong(value
, &ret
))
401 die_bad_config(name
);
405 static int git_config_maybe_bool_text(const char *name
, const char *value
)
411 if (!strcasecmp(value
, "true")
412 || !strcasecmp(value
, "yes")
413 || !strcasecmp(value
, "on"))
415 if (!strcasecmp(value
, "false")
416 || !strcasecmp(value
, "no")
417 || !strcasecmp(value
, "off"))
422 int git_config_maybe_bool(const char *name
, const char *value
)
424 long v
= git_config_maybe_bool_text(name
, value
);
427 if (git_parse_long(value
, &v
))
432 int git_config_bool_or_int(const char *name
, const char *value
, int *is_bool
)
434 int v
= git_config_maybe_bool_text(name
, value
);
440 return git_config_int(name
, value
);
443 int git_config_bool(const char *name
, const char *value
)
446 return !!git_config_bool_or_int(name
, value
, &discard
);
449 int git_config_string(const char **dest
, const char *var
, const char *value
)
452 return config_error_nonbool(var
);
453 *dest
= xstrdup(value
);
457 int git_config_pathname(const char **dest
, const char *var
, const char *value
)
460 return config_error_nonbool(var
);
461 *dest
= expand_user_path(value
);
463 die("Failed to expand user dir in: '%s'", value
);
467 static int git_default_core_config(const char *var
, const char *value
)
469 /* This needs a better name */
470 if (!strcmp(var
, "core.filemode")) {
471 trust_executable_bit
= git_config_bool(var
, value
);
474 if (!strcmp(var
, "core.trustctime")) {
475 trust_ctime
= git_config_bool(var
, value
);
479 if (!strcmp(var
, "core.quotepath")) {
480 quote_path_fully
= git_config_bool(var
, value
);
484 if (!strcmp(var
, "core.symlinks")) {
485 has_symlinks
= git_config_bool(var
, value
);
489 if (!strcmp(var
, "core.ignorecase")) {
490 ignore_case
= git_config_bool(var
, value
);
494 if (!strcmp(var
, "core.attributesfile"))
495 return git_config_pathname(&git_attributes_file
, var
, value
);
497 if (!strcmp(var
, "core.bare")) {
498 is_bare_repository_cfg
= git_config_bool(var
, value
);
502 if (!strcmp(var
, "core.ignorestat")) {
503 assume_unchanged
= git_config_bool(var
, value
);
507 if (!strcmp(var
, "core.prefersymlinkrefs")) {
508 prefer_symlink_refs
= git_config_bool(var
, value
);
512 if (!strcmp(var
, "core.logallrefupdates")) {
513 log_all_ref_updates
= git_config_bool(var
, value
);
517 if (!strcmp(var
, "core.warnambiguousrefs")) {
518 warn_ambiguous_refs
= git_config_bool(var
, value
);
522 if (!strcmp(var
, "core.abbrev")) {
523 int abbrev
= git_config_int(var
, value
);
524 if (abbrev
< minimum_abbrev
|| abbrev
> 40)
526 default_abbrev
= abbrev
;
530 if (!strcmp(var
, "core.loosecompression")) {
531 int level
= git_config_int(var
, value
);
533 level
= Z_DEFAULT_COMPRESSION
;
534 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
535 die("bad zlib compression level %d", level
);
536 zlib_compression_level
= level
;
537 zlib_compression_seen
= 1;
541 if (!strcmp(var
, "core.compression")) {
542 int level
= git_config_int(var
, value
);
544 level
= Z_DEFAULT_COMPRESSION
;
545 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
546 die("bad zlib compression level %d", level
);
547 core_compression_level
= level
;
548 core_compression_seen
= 1;
549 if (!zlib_compression_seen
)
550 zlib_compression_level
= level
;
554 if (!strcmp(var
, "core.packedgitwindowsize")) {
555 int pgsz_x2
= getpagesize() * 2;
556 packed_git_window_size
= git_config_int(var
, value
);
558 /* This value must be multiple of (pagesize * 2) */
559 packed_git_window_size
/= pgsz_x2
;
560 if (packed_git_window_size
< 1)
561 packed_git_window_size
= 1;
562 packed_git_window_size
*= pgsz_x2
;
566 if (!strcmp(var
, "core.bigfilethreshold")) {
567 long n
= git_config_int(var
, value
);
568 big_file_threshold
= 0 < n
? n
: 0;
572 if (!strcmp(var
, "core.packedgitlimit")) {
573 packed_git_limit
= git_config_int(var
, value
);
577 if (!strcmp(var
, "core.deltabasecachelimit")) {
578 delta_base_cache_limit
= git_config_int(var
, value
);
582 if (!strcmp(var
, "core.logpackaccess"))
583 return git_config_string(&log_pack_access
, var
, value
);
585 if (!strcmp(var
, "core.autocrlf")) {
586 if (value
&& !strcasecmp(value
, "input")) {
587 if (core_eol
== EOL_CRLF
)
588 return error("core.autocrlf=input conflicts with core.eol=crlf");
589 auto_crlf
= AUTO_CRLF_INPUT
;
592 auto_crlf
= git_config_bool(var
, value
);
596 if (!strcmp(var
, "core.safecrlf")) {
597 if (value
&& !strcasecmp(value
, "warn")) {
598 safe_crlf
= SAFE_CRLF_WARN
;
601 safe_crlf
= git_config_bool(var
, value
);
605 if (!strcmp(var
, "core.eol")) {
606 if (value
&& !strcasecmp(value
, "lf"))
608 else if (value
&& !strcasecmp(value
, "crlf"))
610 else if (value
&& !strcasecmp(value
, "native"))
611 core_eol
= EOL_NATIVE
;
613 core_eol
= EOL_UNSET
;
614 if (core_eol
== EOL_CRLF
&& auto_crlf
== AUTO_CRLF_INPUT
)
615 return error("core.autocrlf=input conflicts with core.eol=crlf");
619 if (!strcmp(var
, "core.notesref")) {
620 notes_ref_name
= xstrdup(value
);
624 if (!strcmp(var
, "core.pager"))
625 return git_config_string(&pager_program
, var
, value
);
627 if (!strcmp(var
, "core.editor"))
628 return git_config_string(&editor_program
, var
, value
);
630 if (!strcmp(var
, "core.askpass"))
631 return git_config_string(&askpass_program
, var
, value
);
633 if (!strcmp(var
, "core.excludesfile"))
634 return git_config_pathname(&excludes_file
, var
, value
);
636 if (!strcmp(var
, "core.whitespace")) {
638 return config_error_nonbool(var
);
639 whitespace_rule_cfg
= parse_whitespace_rule(value
);
643 if (!strcmp(var
, "core.fsyncobjectfiles")) {
644 fsync_object_files
= git_config_bool(var
, value
);
648 if (!strcmp(var
, "core.preloadindex")) {
649 core_preload_index
= git_config_bool(var
, value
);
653 if (!strcmp(var
, "core.createobject")) {
654 if (!strcmp(value
, "rename"))
655 object_creation_mode
= OBJECT_CREATION_USES_RENAMES
;
656 else if (!strcmp(value
, "link"))
657 object_creation_mode
= OBJECT_CREATION_USES_HARDLINKS
;
659 die("Invalid mode for object creation: %s", value
);
663 if (!strcmp(var
, "core.sparsecheckout")) {
664 core_apply_sparse_checkout
= git_config_bool(var
, value
);
668 /* Add other config variables here and to Documentation/config.txt. */
672 static int git_default_user_config(const char *var
, const char *value
)
674 if (!strcmp(var
, "user.name")) {
676 return config_error_nonbool(var
);
677 strlcpy(git_default_name
, value
, sizeof(git_default_name
));
678 user_ident_explicitly_given
|= IDENT_NAME_GIVEN
;
682 if (!strcmp(var
, "user.email")) {
684 return config_error_nonbool(var
);
685 strlcpy(git_default_email
, value
, sizeof(git_default_email
));
686 user_ident_explicitly_given
|= IDENT_MAIL_GIVEN
;
690 /* Add other config variables here and to Documentation/config.txt. */
694 static int git_default_i18n_config(const char *var
, const char *value
)
696 if (!strcmp(var
, "i18n.commitencoding"))
697 return git_config_string(&git_commit_encoding
, var
, value
);
699 if (!strcmp(var
, "i18n.logoutputencoding"))
700 return git_config_string(&git_log_output_encoding
, var
, value
);
702 /* Add other config variables here and to Documentation/config.txt. */
706 static int git_default_branch_config(const char *var
, const char *value
)
708 if (!strcmp(var
, "branch.autosetupmerge")) {
709 if (value
&& !strcasecmp(value
, "always")) {
710 git_branch_track
= BRANCH_TRACK_ALWAYS
;
713 git_branch_track
= git_config_bool(var
, value
);
716 if (!strcmp(var
, "branch.autosetuprebase")) {
718 return config_error_nonbool(var
);
719 else if (!strcmp(value
, "never"))
720 autorebase
= AUTOREBASE_NEVER
;
721 else if (!strcmp(value
, "local"))
722 autorebase
= AUTOREBASE_LOCAL
;
723 else if (!strcmp(value
, "remote"))
724 autorebase
= AUTOREBASE_REMOTE
;
725 else if (!strcmp(value
, "always"))
726 autorebase
= AUTOREBASE_ALWAYS
;
728 return error("Malformed value for %s", var
);
732 /* Add other config variables here and to Documentation/config.txt. */
736 static int git_default_push_config(const char *var
, const char *value
)
738 if (!strcmp(var
, "push.default")) {
740 return config_error_nonbool(var
);
741 else if (!strcmp(value
, "nothing"))
742 push_default
= PUSH_DEFAULT_NOTHING
;
743 else if (!strcmp(value
, "matching"))
744 push_default
= PUSH_DEFAULT_MATCHING
;
745 else if (!strcmp(value
, "upstream"))
746 push_default
= PUSH_DEFAULT_UPSTREAM
;
747 else if (!strcmp(value
, "tracking")) /* deprecated */
748 push_default
= PUSH_DEFAULT_UPSTREAM
;
749 else if (!strcmp(value
, "current"))
750 push_default
= PUSH_DEFAULT_CURRENT
;
752 error("Malformed value for %s: %s", var
, value
);
753 return error("Must be one of nothing, matching, "
754 "tracking or current.");
759 /* Add other config variables here and to Documentation/config.txt. */
763 static int git_default_mailmap_config(const char *var
, const char *value
)
765 if (!strcmp(var
, "mailmap.file"))
766 return git_config_string(&git_mailmap_file
, var
, value
);
768 /* Add other config variables here and to Documentation/config.txt. */
772 int git_default_config(const char *var
, const char *value
, void *dummy
)
774 if (!prefixcmp(var
, "core."))
775 return git_default_core_config(var
, value
);
777 if (!prefixcmp(var
, "user."))
778 return git_default_user_config(var
, value
);
780 if (!prefixcmp(var
, "i18n."))
781 return git_default_i18n_config(var
, value
);
783 if (!prefixcmp(var
, "branch."))
784 return git_default_branch_config(var
, value
);
786 if (!prefixcmp(var
, "push."))
787 return git_default_push_config(var
, value
);
789 if (!prefixcmp(var
, "mailmap."))
790 return git_default_mailmap_config(var
, value
);
792 if (!prefixcmp(var
, "advice."))
793 return git_default_advice_config(var
, value
);
795 if (!strcmp(var
, "pager.color") || !strcmp(var
, "color.pager")) {
796 pager_use_color
= git_config_bool(var
,value
);
800 if (!strcmp(var
, "pack.packsizelimit")) {
801 pack_size_limit_cfg
= git_config_ulong(var
, value
);
804 /* Add other config variables here and to Documentation/config.txt. */
808 int git_config_from_file(config_fn_t fn
, const char *filename
, void *data
)
811 FILE *f
= fopen(filename
, "r");
817 /* push config-file parsing state stack */
823 strbuf_init(&top
.value
, 1024);
826 ret
= git_parse_file(fn
, data
);
828 /* pop config-file parsing state stack */
829 strbuf_release(&top
.value
);
837 const char *git_etc_gitconfig(void)
839 static const char *system_wide
;
841 system_wide
= system_path(ETC_GITCONFIG
);
845 int git_env_bool(const char *k
, int def
)
847 const char *v
= getenv(k
);
848 return v
? git_config_bool(k
, v
) : def
;
851 int git_config_system(void)
853 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
856 int git_config_early(config_fn_t fn
, void *data
, const char *repo_config
)
858 int ret
= 0, found
= 0;
859 const char *home
= NULL
;
861 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
862 if (config_exclusive_filename
)
863 return git_config_from_file(fn
, config_exclusive_filename
, data
);
864 if (git_config_system() && !access(git_etc_gitconfig(), R_OK
)) {
865 ret
+= git_config_from_file(fn
, git_etc_gitconfig(),
870 home
= getenv("HOME");
872 char *user_config
= xstrdup(mkpath("%s/.gitconfig", home
));
873 if (!access(user_config
, R_OK
)) {
874 ret
+= git_config_from_file(fn
, user_config
, data
);
880 if (repo_config
&& !access(repo_config
, R_OK
)) {
881 ret
+= git_config_from_file(fn
, repo_config
, data
);
885 switch (git_config_from_parameters(fn
, data
)) {
887 die("unable to parse command-line config");
889 case 0: /* found nothing */
891 default: /* found at least one item */
896 return ret
== 0 ? found
: ret
;
899 int git_config(config_fn_t fn
, void *data
)
901 char *repo_config
= NULL
;
904 repo_config
= git_pathdup("config");
905 ret
= git_config_early(fn
, data
, repo_config
);
912 * Find all the stuff for git_config_set() below.
915 #define MAX_MATCHES 512
921 regex_t
*value_regex
;
923 size_t offset
[MAX_MATCHES
];
924 enum { START
, SECTION_SEEN
, SECTION_END_SEEN
, KEY_SEEN
} state
;
928 static int matches(const char *key
, const char *value
)
930 return !strcmp(key
, store
.key
) &&
931 (store
.value_regex
== NULL
||
932 (store
.do_not_match
^
933 !regexec(store
.value_regex
, value
, 0, NULL
, 0)));
936 static int store_aux(const char *key
, const char *value
, void *cb
)
942 switch (store
.state
) {
944 if (matches(key
, value
)) {
945 if (store
.seen
== 1 && store
.multi_replace
== 0) {
946 warning("%s has multiple values", key
);
947 } else if (store
.seen
>= MAX_MATCHES
) {
948 error("too many matches for %s", key
);
952 store
.offset
[store
.seen
] = ftell(f
);
958 * What we are looking for is in store.key (both
959 * section and var), and its section part is baselen
960 * long. We found key (again, both section and var).
961 * We would want to know if this key is in the same
962 * section as what we are looking for. We already
963 * know we are in the same section as what should
966 ep
= strrchr(key
, '.');
967 section_len
= ep
- key
;
969 if ((section_len
!= store
.baselen
) ||
970 memcmp(key
, store
.key
, section_len
+1)) {
971 store
.state
= SECTION_END_SEEN
;
976 * Do not increment matches: this is no match, but we
977 * just made sure we are in the desired section.
979 store
.offset
[store
.seen
] = ftell(f
);
981 case SECTION_END_SEEN
:
983 if (matches(key
, value
)) {
984 store
.offset
[store
.seen
] = ftell(f
);
985 store
.state
= KEY_SEEN
;
988 if (strrchr(key
, '.') - key
== store
.baselen
&&
989 !strncmp(key
, store
.key
, store
.baselen
)) {
990 store
.state
= SECTION_SEEN
;
991 store
.offset
[store
.seen
] = ftell(f
);
998 static int write_error(const char *filename
)
1000 error("failed to write new configuration file %s", filename
);
1002 /* Same error code as "failed to rename". */
1006 static int store_write_section(int fd
, const char *key
)
1010 struct strbuf sb
= STRBUF_INIT
;
1012 dot
= memchr(key
, '.', store
.baselen
);
1014 strbuf_addf(&sb
, "[%.*s \"", (int)(dot
- key
), key
);
1015 for (i
= dot
- key
+ 1; i
< store
.baselen
; i
++) {
1016 if (key
[i
] == '"' || key
[i
] == '\\')
1017 strbuf_addch(&sb
, '\\');
1018 strbuf_addch(&sb
, key
[i
]);
1020 strbuf_addstr(&sb
, "\"]\n");
1022 strbuf_addf(&sb
, "[%.*s]\n", store
.baselen
, key
);
1025 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1026 strbuf_release(&sb
);
1031 static int store_write_pair(int fd
, const char *key
, const char *value
)
1034 int length
= strlen(key
+ store
.baselen
+ 1);
1035 const char *quote
= "";
1036 struct strbuf sb
= STRBUF_INIT
;
1039 * Check to see if the value needs to be surrounded with a dq pair.
1040 * Note that problematic characters are always backslash-quoted; this
1041 * check is about not losing leading or trailing SP and strings that
1042 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1043 * configuration parser.
1045 if (value
[0] == ' ')
1047 for (i
= 0; value
[i
]; i
++)
1048 if (value
[i
] == ';' || value
[i
] == '#')
1050 if (i
&& value
[i
- 1] == ' ')
1053 strbuf_addf(&sb
, "\t%.*s = %s",
1054 length
, key
+ store
.baselen
+ 1, quote
);
1056 for (i
= 0; value
[i
]; i
++)
1059 strbuf_addstr(&sb
, "\\n");
1062 strbuf_addstr(&sb
, "\\t");
1066 strbuf_addch(&sb
, '\\');
1068 strbuf_addch(&sb
, value
[i
]);
1071 strbuf_addf(&sb
, "%s\n", quote
);
1073 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1074 strbuf_release(&sb
);
1079 static ssize_t
find_beginning_of_line(const char *contents
, size_t size
,
1080 size_t offset_
, int *found_bracket
)
1082 size_t equal_offset
= size
, bracket_offset
= size
;
1086 for (offset
= offset_
-2; offset
> 0
1087 && contents
[offset
] != '\n'; offset
--)
1088 switch (contents
[offset
]) {
1089 case '=': equal_offset
= offset
; break;
1090 case ']': bracket_offset
= offset
; break;
1092 if (offset
> 0 && contents
[offset
-1] == '\\') {
1096 if (bracket_offset
< equal_offset
) {
1098 offset
= bracket_offset
+1;
1105 int git_config_set_in_file(const char *config_filename
,
1106 const char *key
, const char *value
)
1108 return git_config_set_multivar_in_file(config_filename
, key
, value
, NULL
, 0);
1111 int git_config_set(const char *key
, const char *value
)
1113 return git_config_set_multivar(key
, value
, NULL
, 0);
1117 * Auxiliary function to sanity-check and split the key into the section
1118 * identifier and variable name.
1120 * Returns 0 on success, -1 when there is an invalid character in the key and
1121 * -2 if there is no section name in the key.
1123 * store_key - pointer to char* which will hold a copy of the key with
1124 * lowercase section and variable name
1125 * baselen - pointer to int which will hold the length of the
1126 * section + subsection part, can be NULL
1128 int git_config_parse_key(const char *key
, char **store_key
, int *baselen_
)
1130 int i
, dot
, baselen
;
1131 const char *last_dot
= strrchr(key
, '.');
1134 * Since "key" actually contains the section name and the real
1135 * key name separated by a dot, we have to know where the dot is.
1138 if (last_dot
== NULL
|| last_dot
== key
) {
1139 error("key does not contain a section: %s", key
);
1140 return -CONFIG_NO_SECTION_OR_NAME
;
1144 error("key does not contain variable name: %s", key
);
1145 return -CONFIG_NO_SECTION_OR_NAME
;
1148 baselen
= last_dot
- key
;
1150 *baselen_
= baselen
;
1153 * Validate the key and while at it, lower case it for matching.
1155 *store_key
= xmalloc(strlen(key
) + 1);
1158 for (i
= 0; key
[i
]; i
++) {
1159 unsigned char c
= key
[i
];
1162 /* Leave the extended basename untouched.. */
1163 if (!dot
|| i
> baselen
) {
1164 if (!iskeychar(c
) ||
1165 (i
== baselen
+ 1 && !isalpha(c
))) {
1166 error("invalid key: %s", key
);
1167 goto out_free_ret_1
;
1170 } else if (c
== '\n') {
1171 error("invalid key (newline): %s", key
);
1172 goto out_free_ret_1
;
1174 (*store_key
)[i
] = c
;
1176 (*store_key
)[i
] = 0;
1182 return -CONFIG_INVALID_KEY
;
1186 * If value==NULL, unset in (remove from) config,
1187 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1188 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1189 * else all matching key/values (regardless how many) are removed,
1190 * before the new pair is written.
1192 * Returns 0 on success.
1194 * This function does this:
1196 * - it locks the config file by creating ".git/config.lock"
1198 * - it then parses the config using store_aux() as validator to find
1199 * the position on the key/value pair to replace. If it is to be unset,
1200 * it must be found exactly once.
1202 * - the config file is mmap()ed and the part before the match (if any) is
1203 * written to the lock file, then the changed part and the rest.
1205 * - the config file is removed and the lock file rename()d to it.
1208 int git_config_set_multivar_in_file(const char *config_filename
,
1209 const char *key
, const char *value
,
1210 const char *value_regex
, int multi_replace
)
1214 struct lock_file
*lock
= NULL
;
1216 /* parse-key returns negative; flip the sign to feed exit(3) */
1217 ret
= 0 - git_config_parse_key(key
, &store
.key
, &store
.baselen
);
1221 store
.multi_replace
= multi_replace
;
1225 * The lock serves a purpose in addition to locking: the new
1226 * contents of .git/config will be written into it.
1228 lock
= xcalloc(sizeof(struct lock_file
), 1);
1229 fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1231 error("could not lock config file %s: %s", config_filename
, strerror(errno
));
1233 ret
= CONFIG_NO_LOCK
;
1238 * If .git/config does not exist yet, write a minimal version.
1240 in_fd
= open(config_filename
, O_RDONLY
);
1244 if ( ENOENT
!= errno
) {
1245 error("opening %s: %s", config_filename
,
1247 ret
= CONFIG_INVALID_FILE
; /* same as "invalid config file" */
1250 /* if nothing to unset, error out */
1251 if (value
== NULL
) {
1252 ret
= CONFIG_NOTHING_SET
;
1256 store
.key
= (char *)key
;
1257 if (!store_write_section(fd
, key
) ||
1258 !store_write_pair(fd
, key
, value
))
1263 size_t contents_sz
, copy_begin
, copy_end
;
1264 int i
, new_line
= 0;
1266 if (value_regex
== NULL
)
1267 store
.value_regex
= NULL
;
1269 if (value_regex
[0] == '!') {
1270 store
.do_not_match
= 1;
1273 store
.do_not_match
= 0;
1275 store
.value_regex
= (regex_t
*)xmalloc(sizeof(regex_t
));
1276 if (regcomp(store
.value_regex
, value_regex
,
1278 error("invalid pattern: %s", value_regex
);
1279 free(store
.value_regex
);
1280 ret
= CONFIG_INVALID_PATTERN
;
1285 store
.offset
[0] = 0;
1286 store
.state
= START
;
1290 * After this, store.offset will contain the *end* offset
1291 * of the last match, or remain at 0 if no match was found.
1292 * As a side effect, we make sure to transform only a valid
1293 * existing config file.
1295 if (git_config_from_file(store_aux
, config_filename
, NULL
)) {
1296 error("invalid config file %s", config_filename
);
1298 if (store
.value_regex
!= NULL
) {
1299 regfree(store
.value_regex
);
1300 free(store
.value_regex
);
1302 ret
= CONFIG_INVALID_FILE
;
1307 if (store
.value_regex
!= NULL
) {
1308 regfree(store
.value_regex
);
1309 free(store
.value_regex
);
1312 /* if nothing to unset, or too many matches, error out */
1313 if ((store
.seen
== 0 && value
== NULL
) ||
1314 (store
.seen
> 1 && multi_replace
== 0)) {
1315 ret
= CONFIG_NOTHING_SET
;
1320 contents_sz
= xsize_t(st
.st_size
);
1321 contents
= xmmap(NULL
, contents_sz
, PROT_READ
,
1322 MAP_PRIVATE
, in_fd
, 0);
1325 if (store
.seen
== 0)
1328 for (i
= 0, copy_begin
= 0; i
< store
.seen
; i
++) {
1329 if (store
.offset
[i
] == 0) {
1330 store
.offset
[i
] = copy_end
= contents_sz
;
1331 } else if (store
.state
!= KEY_SEEN
) {
1332 copy_end
= store
.offset
[i
];
1334 copy_end
= find_beginning_of_line(
1335 contents
, contents_sz
,
1336 store
.offset
[i
]-2, &new_line
);
1338 if (copy_end
> 0 && contents
[copy_end
-1] != '\n')
1341 /* write the first part of the config */
1342 if (copy_end
> copy_begin
) {
1343 if (write_in_full(fd
, contents
+ copy_begin
,
1344 copy_end
- copy_begin
) <
1345 copy_end
- copy_begin
)
1348 write_str_in_full(fd
, "\n") != 1)
1351 copy_begin
= store
.offset
[i
];
1354 /* write the pair (value == NULL means unset) */
1355 if (value
!= NULL
) {
1356 if (store
.state
== START
) {
1357 if (!store_write_section(fd
, key
))
1360 if (!store_write_pair(fd
, key
, value
))
1364 /* write the rest of the config */
1365 if (copy_begin
< contents_sz
)
1366 if (write_in_full(fd
, contents
+ copy_begin
,
1367 contents_sz
- copy_begin
) <
1368 contents_sz
- copy_begin
)
1371 munmap(contents
, contents_sz
);
1374 if (commit_lock_file(lock
) < 0) {
1375 error("could not commit config file %s", config_filename
);
1376 ret
= CONFIG_NO_WRITE
;
1381 * lock is committed, so don't try to roll it back below.
1382 * NOTE: Since lockfile.c keeps a linked list of all created
1383 * lock_file structures, it isn't safe to free(lock). It's
1384 * better to just leave it hanging around.
1391 rollback_lock_file(lock
);
1395 ret
= write_error(lock
->filename
);
1400 int git_config_set_multivar(const char *key
, const char *value
,
1401 const char *value_regex
, int multi_replace
)
1403 const char *config_filename
;
1407 if (config_exclusive_filename
)
1408 config_filename
= config_exclusive_filename
;
1410 config_filename
= buf
= git_pathdup("config");
1412 ret
= git_config_set_multivar_in_file(config_filename
, key
, value
,
1413 value_regex
, multi_replace
);
1418 static int section_name_match (const char *buf
, const char *name
)
1420 int i
= 0, j
= 0, dot
= 0;
1423 for (i
= 1; buf
[i
] && buf
[i
] != ']'; i
++) {
1424 if (!dot
&& isspace(buf
[i
])) {
1426 if (name
[j
++] != '.')
1428 for (i
++; isspace(buf
[i
]); i
++)
1434 if (buf
[i
] == '\\' && dot
)
1436 else if (buf
[i
] == '"' && dot
) {
1437 for (i
++; isspace(buf
[i
]); i
++)
1441 if (buf
[i
] != name
[j
++])
1444 if (buf
[i
] == ']' && name
[j
] == 0) {
1446 * We match, now just find the right length offset by
1447 * gobbling up any whitespace after it, as well
1450 for (; buf
[i
] && isspace(buf
[i
]); i
++)
1457 /* if new_name == NULL, the section is removed instead */
1458 int git_config_rename_section(const char *old_name
, const char *new_name
)
1460 int ret
= 0, remove
= 0;
1461 char *config_filename
;
1462 struct lock_file
*lock
= xcalloc(sizeof(struct lock_file
), 1);
1467 if (config_exclusive_filename
)
1468 config_filename
= xstrdup(config_exclusive_filename
);
1470 config_filename
= git_pathdup("config");
1471 out_fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1473 ret
= error("could not lock config file %s", config_filename
);
1477 if (!(config_file
= fopen(config_filename
, "rb"))) {
1478 /* no config file means nothing to rename, no error */
1479 goto unlock_and_out
;
1482 while (fgets(buf
, sizeof(buf
), config_file
)) {
1486 for (i
= 0; buf
[i
] && isspace(buf
[i
]); i
++)
1488 if (buf
[i
] == '[') {
1489 /* it's a section */
1490 int offset
= section_name_match(&buf
[i
], old_name
);
1493 if (new_name
== NULL
) {
1497 store
.baselen
= strlen(new_name
);
1498 if (!store_write_section(out_fd
, new_name
)) {
1499 ret
= write_error(lock
->filename
);
1503 * We wrote out the new section, with
1504 * a newline, now skip the old
1507 output
+= offset
+ i
;
1508 if (strlen(output
) > 0) {
1510 * More content means there's
1511 * a declaration to put on the
1512 * next line; indent with a
1523 length
= strlen(output
);
1524 if (write_in_full(out_fd
, output
, length
) != length
) {
1525 ret
= write_error(lock
->filename
);
1529 fclose(config_file
);
1531 if (commit_lock_file(lock
) < 0)
1532 ret
= error("could not commit config file %s", config_filename
);
1534 free(config_filename
);
1539 * Call this to report error for your variable that should not
1540 * get a boolean value (i.e. "[my] var" means "true").
1542 int config_error_nonbool(const char *var
)
1544 return error("Missing value for '%s'", var
);