2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 * Copyright (C) Johannes Schindelin, 2005
12 #include "credential.h"
16 typedef struct config_file
{
17 struct config_file
*prev
;
26 static config_file
*cf
;
28 static int zlib_compression_seen
;
30 const char *config_exclusive_filename
= NULL
;
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
,
52 config_fn_t fn
, void *data
)
55 pair
= strbuf_split_str(text
, '=', 2);
57 return error("bogus config parameter: %s", text
);
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
);
63 return error("bogus config parameter: %s", text
);
65 lowercase(pair
[0]->buf
);
66 if (fn(pair
[0]->buf
, pair
[1] ? pair
[1]->buf
: NULL
, data
) < 0) {
67 strbuf_list_free(pair
);
70 strbuf_list_free(pair
);
74 int git_config_from_parameters(config_fn_t fn
, void *data
)
76 const char *env
= getenv(CONFIG_DATA_ENVIRONMENT
);
78 const char **argv
= NULL
;
79 int nr
= 0, alloc
= 0;
84 /* sq_dequote will write over it */
87 if (sq_dequote_to_argv(envw
, &argv
, &nr
, &alloc
) < 0) {
89 return error("bogus format in " CONFIG_DATA_ENVIRONMENT
);
92 for (i
= 0; i
< nr
; i
++) {
93 if (git_config_parse_parameter(argv
[i
], fn
, data
) < 0) {
105 static int get_next_char(void)
111 if (cf
&& ((f
= cf
->f
) != NULL
)) {
114 /* DOS like systems */
131 static char *parse_value(void)
133 int quote
= 0, comment
= 0, space
= 0;
135 strbuf_reset(&cf
->value
);
137 int c
= get_next_char();
141 return cf
->value
.buf
;
145 if (isspace(c
) && !quote
) {
151 if (c
== ';' || c
== '#') {
156 for (; space
; space
--)
157 strbuf_addch(&cf
->value
, ' ');
172 /* Some characters escape as themselves */
175 /* Reject unknown escape sequences */
179 strbuf_addch(&cf
->value
, c
);
186 strbuf_addch(&cf
->value
, c
);
190 static inline int iskeychar(int c
)
192 return isalnum(c
) || c
== '-';
195 static int get_value(config_fn_t fn
, void *data
, char *name
, unsigned int len
)
200 /* Get the full name */
207 name
[len
++] = tolower(c
);
212 while (c
== ' ' || c
== '\t')
219 value
= parse_value();
223 return fn(name
, value
, data
);
226 static int get_extended_base_var(char *name
, int baselen
, int c
)
232 } while (isspace(c
));
234 /* We require the format to be '[base "extension"]' */
237 name
[baselen
++] = '.';
240 int c
= get_next_char();
251 if (baselen
> MAXNAME
/ 2)
256 if (get_next_char() != ']')
261 static int get_base_var(char *name
)
266 int c
= get_next_char();
272 return get_extended_base_var(name
, baselen
, c
);
273 if (!iskeychar(c
) && c
!= '.')
275 if (baselen
> MAXNAME
/ 2)
277 name
[baselen
++] = tolower(c
);
281 static int git_parse_file(config_fn_t fn
, void *data
)
287 /* U+FEFF Byte Order Mark in UTF8 */
288 static const unsigned char *utf8_bom
= (unsigned char *) "\xef\xbb\xbf";
289 const unsigned char *bomptr
= utf8_bom
;
292 int c
= get_next_char();
293 if (bomptr
&& *bomptr
) {
294 /* We are at the file beginning; skip UTF8-encoded BOM
295 * if present. Sane editors won't put this in on their
296 * own, but e.g. Windows Notepad will do it happily. */
297 if ((unsigned char) c
== *bomptr
) {
301 /* Do not tolerate partial BOM. */
302 if (bomptr
!= utf8_bom
)
304 /* No BOM at file beginning. Cool. */
314 if (comment
|| isspace(c
))
316 if (c
== '#' || c
== ';') {
321 baselen
= get_base_var(var
);
324 var
[baselen
++] = '.';
330 var
[baselen
] = tolower(c
);
331 if (get_value(fn
, data
, var
, baselen
+1) < 0)
334 die("bad config file line %d in %s", cf
->linenr
, cf
->name
);
337 static int parse_unit_factor(const char *end
, unsigned long *val
)
341 else if (!strcasecmp(end
, "k")) {
345 else if (!strcasecmp(end
, "m")) {
349 else if (!strcasecmp(end
, "g")) {
350 *val
*= 1024 * 1024 * 1024;
356 static int git_parse_long(const char *value
, long *ret
)
358 if (value
&& *value
) {
360 long val
= strtol(value
, &end
, 0);
361 unsigned long factor
= 1;
362 if (!parse_unit_factor(end
, &factor
))
370 int git_parse_ulong(const char *value
, unsigned long *ret
)
372 if (value
&& *value
) {
374 unsigned long val
= strtoul(value
, &end
, 0);
375 if (!parse_unit_factor(end
, &val
))
383 static void die_bad_config(const char *name
)
386 die("bad config value for '%s' in %s", name
, cf
->name
);
387 die("bad config value for '%s'", name
);
390 int git_config_int(const char *name
, const char *value
)
393 if (!git_parse_long(value
, &ret
))
394 die_bad_config(name
);
398 unsigned long git_config_ulong(const char *name
, const char *value
)
401 if (!git_parse_ulong(value
, &ret
))
402 die_bad_config(name
);
406 static int git_config_maybe_bool_text(const char *name
, const char *value
)
412 if (!strcasecmp(value
, "true")
413 || !strcasecmp(value
, "yes")
414 || !strcasecmp(value
, "on"))
416 if (!strcasecmp(value
, "false")
417 || !strcasecmp(value
, "no")
418 || !strcasecmp(value
, "off"))
423 int git_config_maybe_bool(const char *name
, const char *value
)
425 long v
= git_config_maybe_bool_text(name
, value
);
428 if (git_parse_long(value
, &v
))
433 int git_config_bool_or_int(const char *name
, const char *value
, int *is_bool
)
435 int v
= git_config_maybe_bool_text(name
, value
);
441 return git_config_int(name
, value
);
444 int git_config_bool(const char *name
, const char *value
)
447 return !!git_config_bool_or_int(name
, value
, &discard
);
450 int git_config_string(const char **dest
, const char *var
, const char *value
)
453 return config_error_nonbool(var
);
454 *dest
= xstrdup(value
);
458 int git_config_pathname(const char **dest
, const char *var
, const char *value
)
461 return config_error_nonbool(var
);
462 *dest
= expand_user_path(value
);
464 die("Failed to expand user dir in: '%s'", value
);
468 static int git_default_core_config(const char *var
, const char *value
)
470 /* This needs a better name */
471 if (!strcmp(var
, "core.filemode")) {
472 trust_executable_bit
= git_config_bool(var
, value
);
475 if (!strcmp(var
, "core.trustctime")) {
476 trust_ctime
= git_config_bool(var
, value
);
480 if (!strcmp(var
, "core.quotepath")) {
481 quote_path_fully
= git_config_bool(var
, value
);
485 if (!strcmp(var
, "core.symlinks")) {
486 has_symlinks
= git_config_bool(var
, value
);
490 if (!strcmp(var
, "core.ignorecase")) {
491 ignore_case
= git_config_bool(var
, value
);
495 if (!strcmp(var
, "core.bare")) {
496 is_bare_repository_cfg
= git_config_bool(var
, value
);
500 if (!strcmp(var
, "core.ignorestat")) {
501 assume_unchanged
= git_config_bool(var
, value
);
505 if (!strcmp(var
, "core.prefersymlinkrefs")) {
506 prefer_symlink_refs
= git_config_bool(var
, value
);
510 if (!strcmp(var
, "core.logallrefupdates")) {
511 log_all_ref_updates
= git_config_bool(var
, value
);
515 if (!strcmp(var
, "core.warnambiguousrefs")) {
516 warn_ambiguous_refs
= git_config_bool(var
, value
);
520 if (!strcmp(var
, "core.abbrev")) {
521 int abbrev
= git_config_int(var
, value
);
522 if (abbrev
< minimum_abbrev
|| abbrev
> 40)
524 default_abbrev
= abbrev
;
528 if (!strcmp(var
, "core.loosecompression")) {
529 int level
= git_config_int(var
, value
);
531 level
= Z_DEFAULT_COMPRESSION
;
532 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
533 die("bad zlib compression level %d", level
);
534 zlib_compression_level
= level
;
535 zlib_compression_seen
= 1;
539 if (!strcmp(var
, "core.compression")) {
540 int level
= git_config_int(var
, value
);
542 level
= Z_DEFAULT_COMPRESSION
;
543 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
544 die("bad zlib compression level %d", level
);
545 core_compression_level
= level
;
546 core_compression_seen
= 1;
547 if (!zlib_compression_seen
)
548 zlib_compression_level
= level
;
552 if (!strcmp(var
, "core.packedgitwindowsize")) {
553 int pgsz_x2
= getpagesize() * 2;
554 packed_git_window_size
= git_config_int(var
, value
);
556 /* This value must be multiple of (pagesize * 2) */
557 packed_git_window_size
/= pgsz_x2
;
558 if (packed_git_window_size
< 1)
559 packed_git_window_size
= 1;
560 packed_git_window_size
*= pgsz_x2
;
564 if (!strcmp(var
, "core.bigfilethreshold")) {
565 long n
= git_config_int(var
, value
);
566 big_file_threshold
= 0 < n
? n
: 0;
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.logpackaccess"))
581 return git_config_string(&log_pack_access
, var
, value
);
583 if (!strcmp(var
, "core.autocrlf")) {
584 if (value
&& !strcasecmp(value
, "input")) {
585 if (core_eol
== EOL_CRLF
)
586 return error("core.autocrlf=input conflicts with core.eol=crlf");
587 auto_crlf
= AUTO_CRLF_INPUT
;
590 auto_crlf
= git_config_bool(var
, value
);
594 if (!strcmp(var
, "core.safecrlf")) {
595 if (value
&& !strcasecmp(value
, "warn")) {
596 safe_crlf
= SAFE_CRLF_WARN
;
599 safe_crlf
= git_config_bool(var
, value
);
603 if (!strcmp(var
, "core.eol")) {
604 if (value
&& !strcasecmp(value
, "lf"))
606 else if (value
&& !strcasecmp(value
, "crlf"))
608 else if (value
&& !strcasecmp(value
, "native"))
609 core_eol
= EOL_NATIVE
;
611 core_eol
= EOL_UNSET
;
612 if (core_eol
== EOL_CRLF
&& auto_crlf
== AUTO_CRLF_INPUT
)
613 return error("core.autocrlf=input conflicts with core.eol=crlf");
617 if (!strcmp(var
, "core.notesref")) {
618 notes_ref_name
= xstrdup(value
);
622 if (!strcmp(var
, "core.pager"))
623 return git_config_string(&pager_program
, var
, value
);
625 if (!strcmp(var
, "core.editor"))
626 return git_config_string(&editor_program
, var
, value
);
628 if (!strcmp(var
, "core.askpass"))
629 return git_config_string(&askpass_program
, var
, value
);
631 if (!strcmp(var
, "core.excludesfile"))
632 return git_config_pathname(&excludes_file
, var
, value
);
634 if (!strcmp(var
, "core.whitespace")) {
636 return config_error_nonbool(var
);
637 whitespace_rule_cfg
= parse_whitespace_rule(value
);
641 if (!strcmp(var
, "core.fsyncobjectfiles")) {
642 fsync_object_files
= git_config_bool(var
, value
);
646 if (!strcmp(var
, "core.preloadindex")) {
647 core_preload_index
= git_config_bool(var
, value
);
651 if (!strcmp(var
, "core.createobject")) {
652 if (!strcmp(value
, "rename"))
653 object_creation_mode
= OBJECT_CREATION_USES_RENAMES
;
654 else if (!strcmp(value
, "link"))
655 object_creation_mode
= OBJECT_CREATION_USES_HARDLINKS
;
657 die("Invalid mode for object creation: %s", value
);
661 if (!strcmp(var
, "core.sparsecheckout")) {
662 core_apply_sparse_checkout
= git_config_bool(var
, value
);
666 if (!strcmp(var
, "core.hidedotfiles")) {
667 if (value
&& !strcasecmp(value
, "dotgitonly")) {
668 hide_dotfiles
= HIDE_DOTFILES_DOTGITONLY
;
671 hide_dotfiles
= git_config_bool(var
, value
);
675 /* Add other config variables here and to Documentation/config.txt. */
679 static int git_default_user_config(const char *var
, const char *value
)
681 if (!strcmp(var
, "user.name")) {
683 return config_error_nonbool(var
);
684 strlcpy(git_default_name
, value
, sizeof(git_default_name
));
685 user_ident_explicitly_given
|= IDENT_NAME_GIVEN
;
689 if (!strcmp(var
, "user.email")) {
691 return config_error_nonbool(var
);
692 strlcpy(git_default_email
, value
, sizeof(git_default_email
));
693 user_ident_explicitly_given
|= IDENT_MAIL_GIVEN
;
697 /* Add other config variables here and to Documentation/config.txt. */
701 static int git_default_i18n_config(const char *var
, const char *value
)
703 if (!strcmp(var
, "i18n.commitencoding"))
704 return git_config_string(&git_commit_encoding
, var
, value
);
706 if (!strcmp(var
, "i18n.logoutputencoding"))
707 return git_config_string(&git_log_output_encoding
, var
, value
);
709 /* Add other config variables here and to Documentation/config.txt. */
713 static int git_default_branch_config(const char *var
, const char *value
)
715 if (!strcmp(var
, "branch.autosetupmerge")) {
716 if (value
&& !strcasecmp(value
, "always")) {
717 git_branch_track
= BRANCH_TRACK_ALWAYS
;
720 git_branch_track
= git_config_bool(var
, value
);
723 if (!strcmp(var
, "branch.autosetuprebase")) {
725 return config_error_nonbool(var
);
726 else if (!strcmp(value
, "never"))
727 autorebase
= AUTOREBASE_NEVER
;
728 else if (!strcmp(value
, "local"))
729 autorebase
= AUTOREBASE_LOCAL
;
730 else if (!strcmp(value
, "remote"))
731 autorebase
= AUTOREBASE_REMOTE
;
732 else if (!strcmp(value
, "always"))
733 autorebase
= AUTOREBASE_ALWAYS
;
735 return error("Malformed value for %s", var
);
739 /* Add other config variables here and to Documentation/config.txt. */
743 static int git_default_push_config(const char *var
, const char *value
)
745 if (!strcmp(var
, "push.default")) {
747 return config_error_nonbool(var
);
748 else if (!strcmp(value
, "nothing"))
749 push_default
= PUSH_DEFAULT_NOTHING
;
750 else if (!strcmp(value
, "matching"))
751 push_default
= PUSH_DEFAULT_MATCHING
;
752 else if (!strcmp(value
, "upstream"))
753 push_default
= PUSH_DEFAULT_UPSTREAM
;
754 else if (!strcmp(value
, "tracking")) /* deprecated */
755 push_default
= PUSH_DEFAULT_UPSTREAM
;
756 else if (!strcmp(value
, "current"))
757 push_default
= PUSH_DEFAULT_CURRENT
;
759 error("Malformed value for %s: %s", var
, value
);
760 return error("Must be one of nothing, matching, "
761 "tracking or current.");
766 /* Add other config variables here and to Documentation/config.txt. */
770 static int git_default_mailmap_config(const char *var
, const char *value
)
772 if (!strcmp(var
, "mailmap.file"))
773 return git_config_string(&git_mailmap_file
, var
, value
);
775 /* Add other config variables here and to Documentation/config.txt. */
779 int git_default_config(const char *var
, const char *value
, void *dummy
)
781 if (!prefixcmp(var
, "core."))
782 return git_default_core_config(var
, value
);
784 if (!prefixcmp(var
, "user."))
785 return git_default_user_config(var
, value
);
787 if (!prefixcmp(var
, "i18n."))
788 return git_default_i18n_config(var
, value
);
790 if (!prefixcmp(var
, "branch."))
791 return git_default_branch_config(var
, value
);
793 if (!prefixcmp(var
, "push."))
794 return git_default_push_config(var
, value
);
796 if (!prefixcmp(var
, "mailmap."))
797 return git_default_mailmap_config(var
, value
);
799 if (!prefixcmp(var
, "advice."))
800 return git_default_advice_config(var
, value
);
802 if (!strcmp(var
, "pager.color") || !strcmp(var
, "color.pager")) {
803 pager_use_color
= git_config_bool(var
,value
);
807 if (!prefixcmp(var
, "credential."))
808 return git_default_credential_config(var
, value
);
810 /* Add other config variables here and to Documentation/config.txt. */
814 int git_config_from_file(config_fn_t fn
, const char *filename
, void *data
)
817 FILE *f
= fopen(filename
, "r");
823 /* push config-file parsing state stack */
829 strbuf_init(&top
.value
, 1024);
832 ret
= git_parse_file(fn
, data
);
834 /* pop config-file parsing state stack */
835 strbuf_release(&top
.value
);
843 const char *git_etc_gitconfig(void)
845 static const char *system_wide
;
847 system_wide
= system_path(ETC_GITCONFIG
);
851 int git_env_bool(const char *k
, int def
)
853 const char *v
= getenv(k
);
854 return v
? git_config_bool(k
, v
) : def
;
857 int git_config_system(void)
859 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
862 int git_config_early(config_fn_t fn
, void *data
, const char *repo_config
)
864 int ret
= 0, found
= 0;
865 const char *home
= NULL
;
867 /* Setting $GIT_CONFIG makes git read _only_ the given config file. */
868 if (config_exclusive_filename
)
869 return git_config_from_file(fn
, config_exclusive_filename
, data
);
870 if (git_config_system() && !access(git_etc_gitconfig(), R_OK
)) {
871 ret
+= git_config_from_file(fn
, git_etc_gitconfig(),
876 home
= get_home_directory();
878 char *user_config
= xstrdup(mkpath("%s/.gitconfig", home
));
879 if (!access(user_config
, R_OK
)) {
880 ret
+= git_config_from_file(fn
, user_config
, data
);
886 if (repo_config
&& !access(repo_config
, R_OK
)) {
887 ret
+= git_config_from_file(fn
, repo_config
, data
);
891 switch (git_config_from_parameters(fn
, data
)) {
893 die("unable to parse command-line config");
895 case 0: /* found nothing */
897 default: /* found at least one item */
902 return ret
== 0 ? found
: ret
;
905 int git_config(config_fn_t fn
, void *data
)
907 char *repo_config
= NULL
;
910 repo_config
= git_pathdup("config");
911 ret
= git_config_early(fn
, data
, repo_config
);
918 * Find all the stuff for git_config_set() below.
921 #define MAX_MATCHES 512
927 regex_t
*value_regex
;
929 size_t offset
[MAX_MATCHES
];
930 enum { START
, SECTION_SEEN
, SECTION_END_SEEN
, KEY_SEEN
} state
;
934 static int matches(const char *key
, const char *value
)
936 return !strcmp(key
, store
.key
) &&
937 (store
.value_regex
== NULL
||
938 (store
.do_not_match
^
939 !regexec(store
.value_regex
, value
, 0, NULL
, 0)));
942 static int store_aux(const char *key
, const char *value
, void *cb
)
948 switch (store
.state
) {
950 if (matches(key
, value
)) {
951 if (store
.seen
== 1 && store
.multi_replace
== 0) {
952 warning("%s has multiple values", key
);
953 } else if (store
.seen
>= MAX_MATCHES
) {
954 error("too many matches for %s", key
);
958 store
.offset
[store
.seen
] = ftell(f
);
964 * What we are looking for is in store.key (both
965 * section and var), and its section part is baselen
966 * long. We found key (again, both section and var).
967 * We would want to know if this key is in the same
968 * section as what we are looking for. We already
969 * know we are in the same section as what should
972 ep
= strrchr(key
, '.');
973 section_len
= ep
- key
;
975 if ((section_len
!= store
.baselen
) ||
976 memcmp(key
, store
.key
, section_len
+1)) {
977 store
.state
= SECTION_END_SEEN
;
982 * Do not increment matches: this is no match, but we
983 * just made sure we are in the desired section.
985 store
.offset
[store
.seen
] = ftell(f
);
987 case SECTION_END_SEEN
:
989 if (matches(key
, value
)) {
990 store
.offset
[store
.seen
] = ftell(f
);
991 store
.state
= KEY_SEEN
;
994 if (strrchr(key
, '.') - key
== store
.baselen
&&
995 !strncmp(key
, store
.key
, store
.baselen
)) {
996 store
.state
= SECTION_SEEN
;
997 store
.offset
[store
.seen
] = ftell(f
);
1004 static int write_error(const char *filename
)
1006 error("failed to write new configuration file %s", filename
);
1008 /* Same error code as "failed to rename". */
1012 static int store_write_section(int fd
, const char *key
)
1016 struct strbuf sb
= STRBUF_INIT
;
1018 dot
= memchr(key
, '.', store
.baselen
);
1020 strbuf_addf(&sb
, "[%.*s \"", (int)(dot
- key
), key
);
1021 for (i
= dot
- key
+ 1; i
< store
.baselen
; i
++) {
1022 if (key
[i
] == '"' || key
[i
] == '\\')
1023 strbuf_addch(&sb
, '\\');
1024 strbuf_addch(&sb
, key
[i
]);
1026 strbuf_addstr(&sb
, "\"]\n");
1028 strbuf_addf(&sb
, "[%.*s]\n", store
.baselen
, key
);
1031 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1032 strbuf_release(&sb
);
1037 static int store_write_pair(int fd
, const char *key
, const char *value
)
1040 int length
= strlen(key
+ store
.baselen
+ 1);
1041 const char *quote
= "";
1042 struct strbuf sb
= STRBUF_INIT
;
1045 * Check to see if the value needs to be surrounded with a dq pair.
1046 * Note that problematic characters are always backslash-quoted; this
1047 * check is about not losing leading or trailing SP and strings that
1048 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1049 * configuration parser.
1051 if (value
[0] == ' ')
1053 for (i
= 0; value
[i
]; i
++)
1054 if (value
[i
] == ';' || value
[i
] == '#')
1056 if (i
&& value
[i
- 1] == ' ')
1059 strbuf_addf(&sb
, "\t%.*s = %s",
1060 length
, key
+ store
.baselen
+ 1, quote
);
1062 for (i
= 0; value
[i
]; i
++)
1065 strbuf_addstr(&sb
, "\\n");
1068 strbuf_addstr(&sb
, "\\t");
1072 strbuf_addch(&sb
, '\\');
1074 strbuf_addch(&sb
, value
[i
]);
1077 strbuf_addf(&sb
, "%s\n", quote
);
1079 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1080 strbuf_release(&sb
);
1085 static ssize_t
find_beginning_of_line(const char *contents
, size_t size
,
1086 size_t offset_
, int *found_bracket
)
1088 size_t equal_offset
= size
, bracket_offset
= size
;
1092 for (offset
= offset_
-2; offset
> 0
1093 && contents
[offset
] != '\n'; offset
--)
1094 switch (contents
[offset
]) {
1095 case '=': equal_offset
= offset
; break;
1096 case ']': bracket_offset
= offset
; break;
1098 if (offset
> 0 && contents
[offset
-1] == '\\') {
1102 if (bracket_offset
< equal_offset
) {
1104 offset
= bracket_offset
+1;
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(const char *key
, const char *value
,
1209 const char *value_regex
, int multi_replace
)
1213 char *config_filename
;
1214 struct lock_file
*lock
= NULL
;
1216 if (config_exclusive_filename
)
1217 config_filename
= xstrdup(config_exclusive_filename
);
1219 config_filename
= git_pathdup("config");
1221 /* parse-key returns negative; flip the sign to feed exit(3) */
1222 ret
= 0 - git_config_parse_key(key
, &store
.key
, &store
.baselen
);
1226 store
.multi_replace
= multi_replace
;
1230 * The lock serves a purpose in addition to locking: the new
1231 * contents of .git/config will be written into it.
1233 lock
= xcalloc(sizeof(struct lock_file
), 1);
1234 fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1236 error("could not lock config file %s: %s", config_filename
, strerror(errno
));
1238 ret
= CONFIG_NO_LOCK
;
1243 * If .git/config does not exist yet, write a minimal version.
1245 in_fd
= open(config_filename
, O_RDONLY
);
1249 if ( ENOENT
!= errno
) {
1250 error("opening %s: %s", config_filename
,
1252 ret
= CONFIG_INVALID_FILE
; /* same as "invalid config file" */
1255 /* if nothing to unset, error out */
1256 if (value
== NULL
) {
1257 ret
= CONFIG_NOTHING_SET
;
1261 store
.key
= (char *)key
;
1262 if (!store_write_section(fd
, key
) ||
1263 !store_write_pair(fd
, key
, value
))
1268 size_t contents_sz
, copy_begin
, copy_end
;
1269 int i
, new_line
= 0;
1271 if (value_regex
== NULL
)
1272 store
.value_regex
= NULL
;
1274 if (value_regex
[0] == '!') {
1275 store
.do_not_match
= 1;
1278 store
.do_not_match
= 0;
1280 store
.value_regex
= (regex_t
*)xmalloc(sizeof(regex_t
));
1281 if (regcomp(store
.value_regex
, value_regex
,
1283 error("invalid pattern: %s", value_regex
);
1284 free(store
.value_regex
);
1285 ret
= CONFIG_INVALID_PATTERN
;
1290 store
.offset
[0] = 0;
1291 store
.state
= START
;
1295 * After this, store.offset will contain the *end* offset
1296 * of the last match, or remain at 0 if no match was found.
1297 * As a side effect, we make sure to transform only a valid
1298 * existing config file.
1300 if (git_config_from_file(store_aux
, config_filename
, NULL
)) {
1301 error("invalid config file %s", config_filename
);
1303 if (store
.value_regex
!= NULL
) {
1304 regfree(store
.value_regex
);
1305 free(store
.value_regex
);
1307 ret
= CONFIG_INVALID_FILE
;
1312 if (store
.value_regex
!= NULL
) {
1313 regfree(store
.value_regex
);
1314 free(store
.value_regex
);
1317 /* if nothing to unset, or too many matches, error out */
1318 if ((store
.seen
== 0 && value
== NULL
) ||
1319 (store
.seen
> 1 && multi_replace
== 0)) {
1320 ret
= CONFIG_NOTHING_SET
;
1325 contents_sz
= xsize_t(st
.st_size
);
1326 contents
= xmmap(NULL
, contents_sz
, PROT_READ
,
1327 MAP_PRIVATE
, in_fd
, 0);
1330 if (store
.seen
== 0)
1333 for (i
= 0, copy_begin
= 0; i
< store
.seen
; i
++) {
1334 if (store
.offset
[i
] == 0) {
1335 store
.offset
[i
] = copy_end
= contents_sz
;
1336 } else if (store
.state
!= KEY_SEEN
) {
1337 copy_end
= store
.offset
[i
];
1339 copy_end
= find_beginning_of_line(
1340 contents
, contents_sz
,
1341 store
.offset
[i
]-2, &new_line
);
1343 if (copy_end
> 0 && contents
[copy_end
-1] != '\n')
1346 /* write the first part of the config */
1347 if (copy_end
> copy_begin
) {
1348 if (write_in_full(fd
, contents
+ copy_begin
,
1349 copy_end
- copy_begin
) <
1350 copy_end
- copy_begin
)
1353 write_str_in_full(fd
, "\n") != 1)
1356 copy_begin
= store
.offset
[i
];
1359 /* write the pair (value == NULL means unset) */
1360 if (value
!= NULL
) {
1361 if (store
.state
== START
) {
1362 if (!store_write_section(fd
, key
))
1365 if (!store_write_pair(fd
, key
, value
))
1369 /* write the rest of the config */
1370 if (copy_begin
< contents_sz
)
1371 if (write_in_full(fd
, contents
+ copy_begin
,
1372 contents_sz
- copy_begin
) <
1373 contents_sz
- copy_begin
)
1376 munmap(contents
, contents_sz
);
1379 if (commit_lock_file(lock
) < 0) {
1380 error("could not commit config file %s", config_filename
);
1381 ret
= CONFIG_NO_WRITE
;
1386 * lock is committed, so don't try to roll it back below.
1387 * NOTE: Since lockfile.c keeps a linked list of all created
1388 * lock_file structures, it isn't safe to free(lock). It's
1389 * better to just leave it hanging around.
1396 rollback_lock_file(lock
);
1397 free(config_filename
);
1401 ret
= write_error(lock
->filename
);
1406 static int section_name_match (const char *buf
, const char *name
)
1408 int i
= 0, j
= 0, dot
= 0;
1411 for (i
= 1; buf
[i
] && buf
[i
] != ']'; i
++) {
1412 if (!dot
&& isspace(buf
[i
])) {
1414 if (name
[j
++] != '.')
1416 for (i
++; isspace(buf
[i
]); i
++)
1422 if (buf
[i
] == '\\' && dot
)
1424 else if (buf
[i
] == '"' && dot
) {
1425 for (i
++; isspace(buf
[i
]); i
++)
1429 if (buf
[i
] != name
[j
++])
1432 if (buf
[i
] == ']' && name
[j
] == 0) {
1434 * We match, now just find the right length offset by
1435 * gobbling up any whitespace after it, as well
1438 for (; buf
[i
] && isspace(buf
[i
]); i
++)
1445 /* if new_name == NULL, the section is removed instead */
1446 int git_config_rename_section(const char *old_name
, const char *new_name
)
1448 int ret
= 0, remove
= 0;
1449 char *config_filename
;
1450 struct lock_file
*lock
= xcalloc(sizeof(struct lock_file
), 1);
1455 if (config_exclusive_filename
)
1456 config_filename
= xstrdup(config_exclusive_filename
);
1458 config_filename
= git_pathdup("config");
1459 out_fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1461 ret
= error("could not lock config file %s", config_filename
);
1465 if (!(config_file
= fopen(config_filename
, "rb"))) {
1466 /* no config file means nothing to rename, no error */
1467 goto unlock_and_out
;
1470 while (fgets(buf
, sizeof(buf
), config_file
)) {
1474 for (i
= 0; buf
[i
] && isspace(buf
[i
]); i
++)
1476 if (buf
[i
] == '[') {
1477 /* it's a section */
1478 int offset
= section_name_match(&buf
[i
], old_name
);
1481 if (new_name
== NULL
) {
1485 store
.baselen
= strlen(new_name
);
1486 if (!store_write_section(out_fd
, new_name
)) {
1487 ret
= write_error(lock
->filename
);
1491 * We wrote out the new section, with
1492 * a newline, now skip the old
1495 output
+= offset
+ i
;
1496 if (strlen(output
) > 0) {
1498 * More content means there's
1499 * a declaration to put on the
1500 * next line; indent with a
1511 length
= strlen(output
);
1512 if (write_in_full(out_fd
, output
, length
) != length
) {
1513 ret
= write_error(lock
->filename
);
1517 fclose(config_file
);
1519 if (commit_lock_file(lock
) < 0)
1520 ret
= error("could not commit config file %s", config_filename
);
1522 free(config_filename
);
1527 * Call this to report error for your variable that should not
1528 * get a boolean value (i.e. "[my] var" means "true").
1530 int config_error_nonbool(const char *var
)
1532 return error("Missing value for '%s'", var
);