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 #define MAX_INCLUDE_DEPTH 10
30 static const char include_depth_advice
[] =
31 "exceeded maximum include depth (%d) while including\n"
35 "Do you have circular includes?";
36 static int handle_path_include(const char *path
, struct config_include_data
*inc
)
39 struct strbuf buf
= STRBUF_INIT
;
42 * Use an absolute path as-is, but interpret relative paths
43 * based on the including config file.
45 if (!is_absolute_path(path
)) {
49 return error("relative config includes must come from files");
51 slash
= find_last_dir_sep(cf
->name
);
53 strbuf_add(&buf
, cf
->name
, slash
- cf
->name
+ 1);
54 strbuf_addstr(&buf
, path
);
58 if (!access(path
, R_OK
)) {
59 if (++inc
->depth
> MAX_INCLUDE_DEPTH
)
60 die(include_depth_advice
, MAX_INCLUDE_DEPTH
, path
,
61 cf
&& cf
->name
? cf
->name
: "the command line");
62 ret
= git_config_from_file(git_config_include
, path
, inc
);
69 int git_config_include(const char *var
, const char *value
, void *data
)
71 struct config_include_data
*inc
= data
;
76 * Pass along all values, including "include" directives; this makes it
77 * possible to query information on the includes themselves.
79 ret
= inc
->fn(var
, value
, inc
->data
);
83 type
= skip_prefix(var
, "include.");
87 if (!strcmp(type
, "path"))
88 ret
= handle_path_include(value
, inc
);
92 static void lowercase(char *p
)
98 void git_config_push_parameter(const char *text
)
100 struct strbuf env
= STRBUF_INIT
;
101 const char *old
= getenv(CONFIG_DATA_ENVIRONMENT
);
103 strbuf_addstr(&env
, old
);
104 strbuf_addch(&env
, ' ');
106 sq_quote_buf(&env
, text
);
107 setenv(CONFIG_DATA_ENVIRONMENT
, env
.buf
, 1);
108 strbuf_release(&env
);
111 int git_config_parse_parameter(const char *text
,
112 config_fn_t fn
, void *data
)
114 struct strbuf
**pair
;
115 pair
= strbuf_split_str(text
, '=', 2);
117 return error("bogus config parameter: %s", text
);
118 if (pair
[0]->len
&& pair
[0]->buf
[pair
[0]->len
- 1] == '=')
119 strbuf_setlen(pair
[0], pair
[0]->len
- 1);
120 strbuf_trim(pair
[0]);
122 strbuf_list_free(pair
);
123 return error("bogus config parameter: %s", text
);
125 lowercase(pair
[0]->buf
);
126 if (fn(pair
[0]->buf
, pair
[1] ? pair
[1]->buf
: NULL
, data
) < 0) {
127 strbuf_list_free(pair
);
130 strbuf_list_free(pair
);
134 int git_config_from_parameters(config_fn_t fn
, void *data
)
136 const char *env
= getenv(CONFIG_DATA_ENVIRONMENT
);
138 const char **argv
= NULL
;
139 int nr
= 0, alloc
= 0;
144 /* sq_dequote will write over it */
147 if (sq_dequote_to_argv(envw
, &argv
, &nr
, &alloc
) < 0) {
149 return error("bogus format in " CONFIG_DATA_ENVIRONMENT
);
152 for (i
= 0; i
< nr
; i
++) {
153 if (git_config_parse_parameter(argv
[i
], fn
, data
) < 0) {
165 static int get_next_char(void)
171 if (cf
&& ((f
= cf
->f
) != NULL
)) {
174 /* DOS like systems */
191 static char *parse_value(void)
193 int quote
= 0, comment
= 0, space
= 0;
195 strbuf_reset(&cf
->value
);
197 int c
= get_next_char();
203 return cf
->value
.buf
;
207 if (isspace(c
) && !quote
) {
213 if (c
== ';' || c
== '#') {
218 for (; space
; space
--)
219 strbuf_addch(&cf
->value
, ' ');
234 /* Some characters escape as themselves */
237 /* Reject unknown escape sequences */
241 strbuf_addch(&cf
->value
, c
);
248 strbuf_addch(&cf
->value
, c
);
252 static inline int iskeychar(int c
)
254 return isalnum(c
) || c
== '-';
257 static int get_value(config_fn_t fn
, void *data
, char *name
, unsigned int len
)
262 /* Get the full name */
269 name
[len
++] = tolower(c
);
274 while (c
== ' ' || c
== '\t')
281 value
= parse_value();
285 return fn(name
, value
, data
);
288 static int get_extended_base_var(char *name
, int baselen
, int c
)
292 goto error_incomplete_line
;
294 } while (isspace(c
));
296 /* We require the format to be '[base "extension"]' */
299 name
[baselen
++] = '.';
302 int c
= get_next_char();
304 goto error_incomplete_line
;
310 goto error_incomplete_line
;
313 if (baselen
> MAXNAME
/ 2)
318 if (get_next_char() != ']')
321 error_incomplete_line
:
326 static int get_base_var(char *name
)
331 int c
= get_next_char();
337 return get_extended_base_var(name
, baselen
, c
);
338 if (!iskeychar(c
) && c
!= '.')
340 if (baselen
> MAXNAME
/ 2)
342 name
[baselen
++] = tolower(c
);
346 static int git_parse_file(config_fn_t fn
, void *data
)
352 /* U+FEFF Byte Order Mark in UTF8 */
353 static const unsigned char *utf8_bom
= (unsigned char *) "\xef\xbb\xbf";
354 const unsigned char *bomptr
= utf8_bom
;
357 int c
= get_next_char();
358 if (bomptr
&& *bomptr
) {
359 /* We are at the file beginning; skip UTF8-encoded BOM
360 * if present. Sane editors won't put this in on their
361 * own, but e.g. Windows Notepad will do it happily. */
362 if ((unsigned char) c
== *bomptr
) {
366 /* Do not tolerate partial BOM. */
367 if (bomptr
!= utf8_bom
)
369 /* No BOM at file beginning. Cool. */
379 if (comment
|| isspace(c
))
381 if (c
== '#' || c
== ';') {
386 baselen
= get_base_var(var
);
389 var
[baselen
++] = '.';
395 var
[baselen
] = tolower(c
);
396 if (get_value(fn
, data
, var
, baselen
+1) < 0)
399 die("bad config file line %d in %s", cf
->linenr
, cf
->name
);
402 static int parse_unit_factor(const char *end
, uintmax_t *val
)
406 else if (!strcasecmp(end
, "k")) {
410 else if (!strcasecmp(end
, "m")) {
414 else if (!strcasecmp(end
, "g")) {
415 *val
*= 1024 * 1024 * 1024;
421 static int git_parse_long(const char *value
, long *ret
)
423 if (value
&& *value
) {
427 uintmax_t factor
= 1;
430 val
= strtoimax(value
, &end
, 0);
433 if (!parse_unit_factor(end
, &factor
))
437 if ((uval
> maximum_signed_value_of_type(long)) ||
447 int git_parse_ulong(const char *value
, unsigned long *ret
)
449 if (value
&& *value
) {
455 val
= strtoumax(value
, &end
, 0);
459 if (!parse_unit_factor(end
, &val
))
461 if ((val
> maximum_unsigned_value_of_type(long)) ||
470 static void die_bad_config(const char *name
)
473 die("bad config value for '%s' in %s", name
, cf
->name
);
474 die("bad config value for '%s'", name
);
477 int git_config_int(const char *name
, const char *value
)
480 if (!git_parse_long(value
, &ret
))
481 die_bad_config(name
);
485 unsigned long git_config_ulong(const char *name
, const char *value
)
488 if (!git_parse_ulong(value
, &ret
))
489 die_bad_config(name
);
493 static int git_config_maybe_bool_text(const char *name
, const char *value
)
499 if (!strcasecmp(value
, "true")
500 || !strcasecmp(value
, "yes")
501 || !strcasecmp(value
, "on"))
503 if (!strcasecmp(value
, "false")
504 || !strcasecmp(value
, "no")
505 || !strcasecmp(value
, "off"))
510 int git_config_maybe_bool(const char *name
, const char *value
)
512 long v
= git_config_maybe_bool_text(name
, value
);
515 if (git_parse_long(value
, &v
))
520 int git_config_bool_or_int(const char *name
, const char *value
, int *is_bool
)
522 int v
= git_config_maybe_bool_text(name
, value
);
528 return git_config_int(name
, value
);
531 int git_config_bool(const char *name
, const char *value
)
534 return !!git_config_bool_or_int(name
, value
, &discard
);
537 int git_config_string(const char **dest
, const char *var
, const char *value
)
540 return config_error_nonbool(var
);
541 *dest
= xstrdup(value
);
545 int git_config_pathname(const char **dest
, const char *var
, const char *value
)
548 return config_error_nonbool(var
);
549 *dest
= expand_user_path(value
);
551 die("Failed to expand user dir in: '%s'", value
);
555 static int git_default_core_config(const char *var
, const char *value
)
557 /* This needs a better name */
558 if (!strcmp(var
, "core.filemode")) {
559 trust_executable_bit
= git_config_bool(var
, value
);
562 if (!strcmp(var
, "core.trustctime")) {
563 trust_ctime
= git_config_bool(var
, value
);
567 if (!strcmp(var
, "core.quotepath")) {
568 quote_path_fully
= git_config_bool(var
, value
);
572 if (!strcmp(var
, "core.symlinks")) {
573 has_symlinks
= git_config_bool(var
, value
);
577 if (!strcmp(var
, "core.ignorecase")) {
578 ignore_case
= git_config_bool(var
, value
);
582 if (!strcmp(var
, "core.attributesfile"))
583 return git_config_pathname(&git_attributes_file
, var
, value
);
585 if (!strcmp(var
, "core.bare")) {
586 is_bare_repository_cfg
= git_config_bool(var
, value
);
590 if (!strcmp(var
, "core.ignorestat")) {
591 assume_unchanged
= git_config_bool(var
, value
);
595 if (!strcmp(var
, "core.prefersymlinkrefs")) {
596 prefer_symlink_refs
= git_config_bool(var
, value
);
600 if (!strcmp(var
, "core.logallrefupdates")) {
601 log_all_ref_updates
= git_config_bool(var
, value
);
605 if (!strcmp(var
, "core.warnambiguousrefs")) {
606 warn_ambiguous_refs
= git_config_bool(var
, value
);
610 if (!strcmp(var
, "core.abbrev")) {
611 int abbrev
= git_config_int(var
, value
);
612 if (abbrev
< minimum_abbrev
|| abbrev
> 40)
614 default_abbrev
= abbrev
;
618 if (!strcmp(var
, "core.loosecompression")) {
619 int level
= git_config_int(var
, value
);
621 level
= Z_DEFAULT_COMPRESSION
;
622 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
623 die("bad zlib compression level %d", level
);
624 zlib_compression_level
= level
;
625 zlib_compression_seen
= 1;
629 if (!strcmp(var
, "core.compression")) {
630 int level
= git_config_int(var
, value
);
632 level
= Z_DEFAULT_COMPRESSION
;
633 else if (level
< 0 || level
> Z_BEST_COMPRESSION
)
634 die("bad zlib compression level %d", level
);
635 core_compression_level
= level
;
636 core_compression_seen
= 1;
637 if (!zlib_compression_seen
)
638 zlib_compression_level
= level
;
642 if (!strcmp(var
, "core.packedgitwindowsize")) {
643 int pgsz_x2
= getpagesize() * 2;
644 packed_git_window_size
= git_config_ulong(var
, value
);
646 /* This value must be multiple of (pagesize * 2) */
647 packed_git_window_size
/= pgsz_x2
;
648 if (packed_git_window_size
< 1)
649 packed_git_window_size
= 1;
650 packed_git_window_size
*= pgsz_x2
;
654 if (!strcmp(var
, "core.bigfilethreshold")) {
655 big_file_threshold
= git_config_ulong(var
, value
);
659 if (!strcmp(var
, "core.packedgitlimit")) {
660 packed_git_limit
= git_config_ulong(var
, value
);
664 if (!strcmp(var
, "core.deltabasecachelimit")) {
665 delta_base_cache_limit
= git_config_ulong(var
, value
);
669 if (!strcmp(var
, "core.logpackaccess"))
670 return git_config_string(&log_pack_access
, var
, value
);
672 if (!strcmp(var
, "core.autocrlf")) {
673 if (value
&& !strcasecmp(value
, "input")) {
674 if (core_eol
== EOL_CRLF
)
675 return error("core.autocrlf=input conflicts with core.eol=crlf");
676 auto_crlf
= AUTO_CRLF_INPUT
;
679 auto_crlf
= git_config_bool(var
, value
);
683 if (!strcmp(var
, "core.safecrlf")) {
684 if (value
&& !strcasecmp(value
, "warn")) {
685 safe_crlf
= SAFE_CRLF_WARN
;
688 safe_crlf
= git_config_bool(var
, value
);
692 if (!strcmp(var
, "core.eol")) {
693 if (value
&& !strcasecmp(value
, "lf"))
695 else if (value
&& !strcasecmp(value
, "crlf"))
697 else if (value
&& !strcasecmp(value
, "native"))
698 core_eol
= EOL_NATIVE
;
700 core_eol
= EOL_UNSET
;
701 if (core_eol
== EOL_CRLF
&& auto_crlf
== AUTO_CRLF_INPUT
)
702 return error("core.autocrlf=input conflicts with core.eol=crlf");
706 if (!strcmp(var
, "core.notesref")) {
707 notes_ref_name
= xstrdup(value
);
711 if (!strcmp(var
, "core.pager"))
712 return git_config_string(&pager_program
, var
, value
);
714 if (!strcmp(var
, "core.editor"))
715 return git_config_string(&editor_program
, var
, value
);
717 if (!strcmp(var
, "core.askpass"))
718 return git_config_string(&askpass_program
, var
, value
);
720 if (!strcmp(var
, "core.excludesfile"))
721 return git_config_pathname(&excludes_file
, var
, value
);
723 if (!strcmp(var
, "core.whitespace")) {
725 return config_error_nonbool(var
);
726 whitespace_rule_cfg
= parse_whitespace_rule(value
);
730 if (!strcmp(var
, "core.fsyncobjectfiles")) {
731 fsync_object_files
= git_config_bool(var
, value
);
735 if (!strcmp(var
, "core.preloadindex")) {
736 core_preload_index
= git_config_bool(var
, value
);
740 if (!strcmp(var
, "core.createobject")) {
741 if (!strcmp(value
, "rename"))
742 object_creation_mode
= OBJECT_CREATION_USES_RENAMES
;
743 else if (!strcmp(value
, "link"))
744 object_creation_mode
= OBJECT_CREATION_USES_HARDLINKS
;
746 die("Invalid mode for object creation: %s", value
);
750 if (!strcmp(var
, "core.sparsecheckout")) {
751 core_apply_sparse_checkout
= git_config_bool(var
, value
);
755 /* Add other config variables here and to Documentation/config.txt. */
759 static int git_default_user_config(const char *var
, const char *value
)
761 if (!strcmp(var
, "user.name")) {
763 return config_error_nonbool(var
);
764 strlcpy(git_default_name
, value
, sizeof(git_default_name
));
765 user_ident_explicitly_given
|= IDENT_NAME_GIVEN
;
769 if (!strcmp(var
, "user.email")) {
771 return config_error_nonbool(var
);
772 strlcpy(git_default_email
, value
, sizeof(git_default_email
));
773 user_ident_explicitly_given
|= IDENT_MAIL_GIVEN
;
777 /* Add other config variables here and to Documentation/config.txt. */
781 static int git_default_i18n_config(const char *var
, const char *value
)
783 if (!strcmp(var
, "i18n.commitencoding"))
784 return git_config_string(&git_commit_encoding
, var
, value
);
786 if (!strcmp(var
, "i18n.logoutputencoding"))
787 return git_config_string(&git_log_output_encoding
, var
, value
);
789 /* Add other config variables here and to Documentation/config.txt. */
793 static int git_default_branch_config(const char *var
, const char *value
)
795 if (!strcmp(var
, "branch.autosetupmerge")) {
796 if (value
&& !strcasecmp(value
, "always")) {
797 git_branch_track
= BRANCH_TRACK_ALWAYS
;
800 git_branch_track
= git_config_bool(var
, value
);
803 if (!strcmp(var
, "branch.autosetuprebase")) {
805 return config_error_nonbool(var
);
806 else if (!strcmp(value
, "never"))
807 autorebase
= AUTOREBASE_NEVER
;
808 else if (!strcmp(value
, "local"))
809 autorebase
= AUTOREBASE_LOCAL
;
810 else if (!strcmp(value
, "remote"))
811 autorebase
= AUTOREBASE_REMOTE
;
812 else if (!strcmp(value
, "always"))
813 autorebase
= AUTOREBASE_ALWAYS
;
815 return error("Malformed value for %s", var
);
819 /* Add other config variables here and to Documentation/config.txt. */
823 static int git_default_push_config(const char *var
, const char *value
)
825 if (!strcmp(var
, "push.default")) {
827 return config_error_nonbool(var
);
828 else if (!strcmp(value
, "nothing"))
829 push_default
= PUSH_DEFAULT_NOTHING
;
830 else if (!strcmp(value
, "matching"))
831 push_default
= PUSH_DEFAULT_MATCHING
;
832 else if (!strcmp(value
, "simple"))
833 push_default
= PUSH_DEFAULT_SIMPLE
;
834 else if (!strcmp(value
, "upstream"))
835 push_default
= PUSH_DEFAULT_UPSTREAM
;
836 else if (!strcmp(value
, "tracking")) /* deprecated */
837 push_default
= PUSH_DEFAULT_UPSTREAM
;
838 else if (!strcmp(value
, "current"))
839 push_default
= PUSH_DEFAULT_CURRENT
;
841 error("Malformed value for %s: %s", var
, value
);
842 return error("Must be one of nothing, matching, simple, "
843 "upstream or current.");
848 /* Add other config variables here and to Documentation/config.txt. */
852 static int git_default_mailmap_config(const char *var
, const char *value
)
854 if (!strcmp(var
, "mailmap.file"))
855 return git_config_string(&git_mailmap_file
, var
, value
);
857 /* Add other config variables here and to Documentation/config.txt. */
861 int git_default_config(const char *var
, const char *value
, void *dummy
)
863 if (!prefixcmp(var
, "core."))
864 return git_default_core_config(var
, value
);
866 if (!prefixcmp(var
, "user."))
867 return git_default_user_config(var
, value
);
869 if (!prefixcmp(var
, "i18n."))
870 return git_default_i18n_config(var
, value
);
872 if (!prefixcmp(var
, "branch."))
873 return git_default_branch_config(var
, value
);
875 if (!prefixcmp(var
, "push."))
876 return git_default_push_config(var
, value
);
878 if (!prefixcmp(var
, "mailmap."))
879 return git_default_mailmap_config(var
, value
);
881 if (!prefixcmp(var
, "advice."))
882 return git_default_advice_config(var
, value
);
884 if (!strcmp(var
, "pager.color") || !strcmp(var
, "color.pager")) {
885 pager_use_color
= git_config_bool(var
,value
);
889 if (!strcmp(var
, "pack.packsizelimit")) {
890 pack_size_limit_cfg
= git_config_ulong(var
, value
);
893 /* Add other config variables here and to Documentation/config.txt. */
897 int git_config_from_file(config_fn_t fn
, const char *filename
, void *data
)
900 FILE *f
= fopen(filename
, "r");
906 /* push config-file parsing state stack */
912 strbuf_init(&top
.value
, 1024);
915 ret
= git_parse_file(fn
, data
);
917 /* pop config-file parsing state stack */
918 strbuf_release(&top
.value
);
926 const char *git_etc_gitconfig(void)
928 static const char *system_wide
;
930 system_wide
= system_path(ETC_GITCONFIG
);
934 int git_env_bool(const char *k
, int def
)
936 const char *v
= getenv(k
);
937 return v
? git_config_bool(k
, v
) : def
;
940 int git_config_system(void)
942 return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
945 int git_config_early(config_fn_t fn
, void *data
, const char *repo_config
)
947 int ret
= 0, found
= 0;
948 const char *home
= NULL
;
950 if (git_config_system() && !access(git_etc_gitconfig(), R_OK
)) {
951 ret
+= git_config_from_file(fn
, git_etc_gitconfig(),
956 home
= getenv("HOME");
959 char *user_config
= mksnpath(buf
, sizeof(buf
), "%s/.gitconfig", home
);
960 if (!access(user_config
, R_OK
)) {
961 ret
+= git_config_from_file(fn
, user_config
, data
);
966 if (repo_config
&& !access(repo_config
, R_OK
)) {
967 ret
+= git_config_from_file(fn
, repo_config
, data
);
971 switch (git_config_from_parameters(fn
, data
)) {
973 die("unable to parse command-line config");
975 case 0: /* found nothing */
977 default: /* found at least one item */
982 return ret
== 0 ? found
: ret
;
985 int git_config_with_options(config_fn_t fn
, void *data
,
986 const char *filename
, int respect_includes
)
988 char *repo_config
= NULL
;
990 struct config_include_data inc
= CONFIG_INCLUDE_INIT
;
992 if (respect_includes
) {
995 fn
= git_config_include
;
1000 * If we have a specific filename, use it. Otherwise, follow the
1001 * regular lookup sequence.
1004 return git_config_from_file(fn
, filename
, data
);
1006 repo_config
= git_pathdup("config");
1007 ret
= git_config_early(fn
, data
, repo_config
);
1013 int git_config(config_fn_t fn
, void *data
)
1015 return git_config_with_options(fn
, data
, NULL
, 1);
1019 * Find all the stuff for git_config_set() below.
1022 #define MAX_MATCHES 512
1028 regex_t
*value_regex
;
1030 size_t offset
[MAX_MATCHES
];
1031 enum { START
, SECTION_SEEN
, SECTION_END_SEEN
, KEY_SEEN
} state
;
1035 static int matches(const char *key
, const char *value
)
1037 return !strcmp(key
, store
.key
) &&
1038 (store
.value_regex
== NULL
||
1039 (store
.do_not_match
^
1040 !regexec(store
.value_regex
, value
, 0, NULL
, 0)));
1043 static int store_aux(const char *key
, const char *value
, void *cb
)
1049 switch (store
.state
) {
1051 if (matches(key
, value
)) {
1052 if (store
.seen
== 1 && store
.multi_replace
== 0) {
1053 warning("%s has multiple values", key
);
1054 } else if (store
.seen
>= MAX_MATCHES
) {
1055 error("too many matches for %s", key
);
1059 store
.offset
[store
.seen
] = ftell(f
);
1065 * What we are looking for is in store.key (both
1066 * section and var), and its section part is baselen
1067 * long. We found key (again, both section and var).
1068 * We would want to know if this key is in the same
1069 * section as what we are looking for. We already
1070 * know we are in the same section as what should
1073 ep
= strrchr(key
, '.');
1074 section_len
= ep
- key
;
1076 if ((section_len
!= store
.baselen
) ||
1077 memcmp(key
, store
.key
, section_len
+1)) {
1078 store
.state
= SECTION_END_SEEN
;
1083 * Do not increment matches: this is no match, but we
1084 * just made sure we are in the desired section.
1086 store
.offset
[store
.seen
] = ftell(f
);
1088 case SECTION_END_SEEN
:
1090 if (matches(key
, value
)) {
1091 store
.offset
[store
.seen
] = ftell(f
);
1092 store
.state
= KEY_SEEN
;
1095 if (strrchr(key
, '.') - key
== store
.baselen
&&
1096 !strncmp(key
, store
.key
, store
.baselen
)) {
1097 store
.state
= SECTION_SEEN
;
1098 store
.offset
[store
.seen
] = ftell(f
);
1105 static int write_error(const char *filename
)
1107 error("failed to write new configuration file %s", filename
);
1109 /* Same error code as "failed to rename". */
1113 static int store_write_section(int fd
, const char *key
)
1117 struct strbuf sb
= STRBUF_INIT
;
1119 dot
= memchr(key
, '.', store
.baselen
);
1121 strbuf_addf(&sb
, "[%.*s \"", (int)(dot
- key
), key
);
1122 for (i
= dot
- key
+ 1; i
< store
.baselen
; i
++) {
1123 if (key
[i
] == '"' || key
[i
] == '\\')
1124 strbuf_addch(&sb
, '\\');
1125 strbuf_addch(&sb
, key
[i
]);
1127 strbuf_addstr(&sb
, "\"]\n");
1129 strbuf_addf(&sb
, "[%.*s]\n", store
.baselen
, key
);
1132 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1133 strbuf_release(&sb
);
1138 static int store_write_pair(int fd
, const char *key
, const char *value
)
1141 int length
= strlen(key
+ store
.baselen
+ 1);
1142 const char *quote
= "";
1143 struct strbuf sb
= STRBUF_INIT
;
1146 * Check to see if the value needs to be surrounded with a dq pair.
1147 * Note that problematic characters are always backslash-quoted; this
1148 * check is about not losing leading or trailing SP and strings that
1149 * follow beginning-of-comment characters (i.e. ';' and '#') by the
1150 * configuration parser.
1152 if (value
[0] == ' ')
1154 for (i
= 0; value
[i
]; i
++)
1155 if (value
[i
] == ';' || value
[i
] == '#')
1157 if (i
&& value
[i
- 1] == ' ')
1160 strbuf_addf(&sb
, "\t%.*s = %s",
1161 length
, key
+ store
.baselen
+ 1, quote
);
1163 for (i
= 0; value
[i
]; i
++)
1166 strbuf_addstr(&sb
, "\\n");
1169 strbuf_addstr(&sb
, "\\t");
1173 strbuf_addch(&sb
, '\\');
1175 strbuf_addch(&sb
, value
[i
]);
1178 strbuf_addf(&sb
, "%s\n", quote
);
1180 success
= write_in_full(fd
, sb
.buf
, sb
.len
) == sb
.len
;
1181 strbuf_release(&sb
);
1186 static ssize_t
find_beginning_of_line(const char *contents
, size_t size
,
1187 size_t offset_
, int *found_bracket
)
1189 size_t equal_offset
= size
, bracket_offset
= size
;
1193 for (offset
= offset_
-2; offset
> 0
1194 && contents
[offset
] != '\n'; offset
--)
1195 switch (contents
[offset
]) {
1196 case '=': equal_offset
= offset
; break;
1197 case ']': bracket_offset
= offset
; break;
1199 if (offset
> 0 && contents
[offset
-1] == '\\') {
1203 if (bracket_offset
< equal_offset
) {
1205 offset
= bracket_offset
+1;
1212 int git_config_set_in_file(const char *config_filename
,
1213 const char *key
, const char *value
)
1215 return git_config_set_multivar_in_file(config_filename
, key
, value
, NULL
, 0);
1218 int git_config_set(const char *key
, const char *value
)
1220 return git_config_set_multivar(key
, value
, NULL
, 0);
1224 * Auxiliary function to sanity-check and split the key into the section
1225 * identifier and variable name.
1227 * Returns 0 on success, -1 when there is an invalid character in the key and
1228 * -2 if there is no section name in the key.
1230 * store_key - pointer to char* which will hold a copy of the key with
1231 * lowercase section and variable name
1232 * baselen - pointer to int which will hold the length of the
1233 * section + subsection part, can be NULL
1235 int git_config_parse_key(const char *key
, char **store_key
, int *baselen_
)
1237 int i
, dot
, baselen
;
1238 const char *last_dot
= strrchr(key
, '.');
1241 * Since "key" actually contains the section name and the real
1242 * key name separated by a dot, we have to know where the dot is.
1245 if (last_dot
== NULL
|| last_dot
== key
) {
1246 error("key does not contain a section: %s", key
);
1247 return -CONFIG_NO_SECTION_OR_NAME
;
1251 error("key does not contain variable name: %s", key
);
1252 return -CONFIG_NO_SECTION_OR_NAME
;
1255 baselen
= last_dot
- key
;
1257 *baselen_
= baselen
;
1260 * Validate the key and while at it, lower case it for matching.
1262 *store_key
= xmalloc(strlen(key
) + 1);
1265 for (i
= 0; key
[i
]; i
++) {
1266 unsigned char c
= key
[i
];
1269 /* Leave the extended basename untouched.. */
1270 if (!dot
|| i
> baselen
) {
1271 if (!iskeychar(c
) ||
1272 (i
== baselen
+ 1 && !isalpha(c
))) {
1273 error("invalid key: %s", key
);
1274 goto out_free_ret_1
;
1277 } else if (c
== '\n') {
1278 error("invalid key (newline): %s", key
);
1279 goto out_free_ret_1
;
1281 (*store_key
)[i
] = c
;
1283 (*store_key
)[i
] = 0;
1289 return -CONFIG_INVALID_KEY
;
1293 * If value==NULL, unset in (remove from) config,
1294 * if value_regex!=NULL, disregard key/value pairs where value does not match.
1295 * if multi_replace==0, nothing, or only one matching key/value is replaced,
1296 * else all matching key/values (regardless how many) are removed,
1297 * before the new pair is written.
1299 * Returns 0 on success.
1301 * This function does this:
1303 * - it locks the config file by creating ".git/config.lock"
1305 * - it then parses the config using store_aux() as validator to find
1306 * the position on the key/value pair to replace. If it is to be unset,
1307 * it must be found exactly once.
1309 * - the config file is mmap()ed and the part before the match (if any) is
1310 * written to the lock file, then the changed part and the rest.
1312 * - the config file is removed and the lock file rename()d to it.
1315 int git_config_set_multivar_in_file(const char *config_filename
,
1316 const char *key
, const char *value
,
1317 const char *value_regex
, int multi_replace
)
1321 struct lock_file
*lock
= NULL
;
1322 char *filename_buf
= NULL
;
1324 /* parse-key returns negative; flip the sign to feed exit(3) */
1325 ret
= 0 - git_config_parse_key(key
, &store
.key
, &store
.baselen
);
1329 store
.multi_replace
= multi_replace
;
1331 if (!config_filename
)
1332 config_filename
= filename_buf
= git_pathdup("config");
1335 * The lock serves a purpose in addition to locking: the new
1336 * contents of .git/config will be written into it.
1338 lock
= xcalloc(sizeof(struct lock_file
), 1);
1339 fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1341 error("could not lock config file %s: %s", config_filename
, strerror(errno
));
1343 ret
= CONFIG_NO_LOCK
;
1348 * If .git/config does not exist yet, write a minimal version.
1350 in_fd
= open(config_filename
, O_RDONLY
);
1354 if ( ENOENT
!= errno
) {
1355 error("opening %s: %s", config_filename
,
1357 ret
= CONFIG_INVALID_FILE
; /* same as "invalid config file" */
1360 /* if nothing to unset, error out */
1361 if (value
== NULL
) {
1362 ret
= CONFIG_NOTHING_SET
;
1366 store
.key
= (char *)key
;
1367 if (!store_write_section(fd
, key
) ||
1368 !store_write_pair(fd
, key
, value
))
1373 size_t contents_sz
, copy_begin
, copy_end
;
1374 int i
, new_line
= 0;
1376 if (value_regex
== NULL
)
1377 store
.value_regex
= NULL
;
1379 if (value_regex
[0] == '!') {
1380 store
.do_not_match
= 1;
1383 store
.do_not_match
= 0;
1385 store
.value_regex
= (regex_t
*)xmalloc(sizeof(regex_t
));
1386 if (regcomp(store
.value_regex
, value_regex
,
1388 error("invalid pattern: %s", value_regex
);
1389 free(store
.value_regex
);
1390 ret
= CONFIG_INVALID_PATTERN
;
1395 store
.offset
[0] = 0;
1396 store
.state
= START
;
1400 * After this, store.offset will contain the *end* offset
1401 * of the last match, or remain at 0 if no match was found.
1402 * As a side effect, we make sure to transform only a valid
1403 * existing config file.
1405 if (git_config_from_file(store_aux
, config_filename
, NULL
)) {
1406 error("invalid config file %s", config_filename
);
1408 if (store
.value_regex
!= NULL
) {
1409 regfree(store
.value_regex
);
1410 free(store
.value_regex
);
1412 ret
= CONFIG_INVALID_FILE
;
1417 if (store
.value_regex
!= NULL
) {
1418 regfree(store
.value_regex
);
1419 free(store
.value_regex
);
1422 /* if nothing to unset, or too many matches, error out */
1423 if ((store
.seen
== 0 && value
== NULL
) ||
1424 (store
.seen
> 1 && multi_replace
== 0)) {
1425 ret
= CONFIG_NOTHING_SET
;
1430 contents_sz
= xsize_t(st
.st_size
);
1431 contents
= xmmap(NULL
, contents_sz
, PROT_READ
,
1432 MAP_PRIVATE
, in_fd
, 0);
1435 if (store
.seen
== 0)
1438 for (i
= 0, copy_begin
= 0; i
< store
.seen
; i
++) {
1439 if (store
.offset
[i
] == 0) {
1440 store
.offset
[i
] = copy_end
= contents_sz
;
1441 } else if (store
.state
!= KEY_SEEN
) {
1442 copy_end
= store
.offset
[i
];
1444 copy_end
= find_beginning_of_line(
1445 contents
, contents_sz
,
1446 store
.offset
[i
]-2, &new_line
);
1448 if (copy_end
> 0 && contents
[copy_end
-1] != '\n')
1451 /* write the first part of the config */
1452 if (copy_end
> copy_begin
) {
1453 if (write_in_full(fd
, contents
+ copy_begin
,
1454 copy_end
- copy_begin
) <
1455 copy_end
- copy_begin
)
1458 write_str_in_full(fd
, "\n") != 1)
1461 copy_begin
= store
.offset
[i
];
1464 /* write the pair (value == NULL means unset) */
1465 if (value
!= NULL
) {
1466 if (store
.state
== START
) {
1467 if (!store_write_section(fd
, key
))
1470 if (!store_write_pair(fd
, key
, value
))
1474 /* write the rest of the config */
1475 if (copy_begin
< contents_sz
)
1476 if (write_in_full(fd
, contents
+ copy_begin
,
1477 contents_sz
- copy_begin
) <
1478 contents_sz
- copy_begin
)
1481 munmap(contents
, contents_sz
);
1484 if (commit_lock_file(lock
) < 0) {
1485 error("could not commit config file %s", config_filename
);
1486 ret
= CONFIG_NO_WRITE
;
1491 * lock is committed, so don't try to roll it back below.
1492 * NOTE: Since lockfile.c keeps a linked list of all created
1493 * lock_file structures, it isn't safe to free(lock). It's
1494 * better to just leave it hanging around.
1501 rollback_lock_file(lock
);
1506 ret
= write_error(lock
->filename
);
1511 int git_config_set_multivar(const char *key
, const char *value
,
1512 const char *value_regex
, int multi_replace
)
1514 return git_config_set_multivar_in_file(NULL
, key
, value
, value_regex
,
1518 static int section_name_match (const char *buf
, const char *name
)
1520 int i
= 0, j
= 0, dot
= 0;
1523 for (i
= 1; buf
[i
] && buf
[i
] != ']'; i
++) {
1524 if (!dot
&& isspace(buf
[i
])) {
1526 if (name
[j
++] != '.')
1528 for (i
++; isspace(buf
[i
]); i
++)
1534 if (buf
[i
] == '\\' && dot
)
1536 else if (buf
[i
] == '"' && dot
) {
1537 for (i
++; isspace(buf
[i
]); i
++)
1541 if (buf
[i
] != name
[j
++])
1544 if (buf
[i
] == ']' && name
[j
] == 0) {
1546 * We match, now just find the right length offset by
1547 * gobbling up any whitespace after it, as well
1550 for (; buf
[i
] && isspace(buf
[i
]); i
++)
1557 /* if new_name == NULL, the section is removed instead */
1558 int git_config_rename_section_in_file(const char *config_filename
,
1559 const char *old_name
, const char *new_name
)
1561 int ret
= 0, remove
= 0;
1562 char *filename_buf
= NULL
;
1563 struct lock_file
*lock
= xcalloc(sizeof(struct lock_file
), 1);
1568 if (!config_filename
)
1569 config_filename
= filename_buf
= git_pathdup("config");
1571 out_fd
= hold_lock_file_for_update(lock
, config_filename
, 0);
1573 ret
= error("could not lock config file %s", config_filename
);
1577 if (!(config_file
= fopen(config_filename
, "rb"))) {
1578 /* no config file means nothing to rename, no error */
1579 goto unlock_and_out
;
1582 while (fgets(buf
, sizeof(buf
), config_file
)) {
1586 for (i
= 0; buf
[i
] && isspace(buf
[i
]); i
++)
1588 if (buf
[i
] == '[') {
1589 /* it's a section */
1590 int offset
= section_name_match(&buf
[i
], old_name
);
1593 if (new_name
== NULL
) {
1597 store
.baselen
= strlen(new_name
);
1598 if (!store_write_section(out_fd
, new_name
)) {
1599 ret
= write_error(lock
->filename
);
1603 * We wrote out the new section, with
1604 * a newline, now skip the old
1607 output
+= offset
+ i
;
1608 if (strlen(output
) > 0) {
1610 * More content means there's
1611 * a declaration to put on the
1612 * next line; indent with a
1623 length
= strlen(output
);
1624 if (write_in_full(out_fd
, output
, length
) != length
) {
1625 ret
= write_error(lock
->filename
);
1629 fclose(config_file
);
1631 if (commit_lock_file(lock
) < 0)
1632 ret
= error("could not commit config file %s", config_filename
);
1638 int git_config_rename_section(const char *old_name
, const char *new_name
)
1640 return git_config_rename_section_in_file(NULL
, old_name
, new_name
);
1644 * Call this to report error for your variable that should not
1645 * get a boolean value (i.e. "[my] var" means "true").
1647 int config_error_nonbool(const char *var
)
1649 return error("Missing value for '%s'", var
);