Add set_git_dir() function
[git/git.git] / environment.c
CommitLineData
e1b10391
LT
1/*
2 * We put all the git config variables in this same object
3 * file, so that programs can link against the config parser
4 * without having to link against all the rest of git.
5 *
6 * In particular, no need to bring in libz etc unless needed,
7 * even if you might want to know where the git directory etc
8 * are.
9 */
10#include "cache.h"
11
12char git_default_email[MAX_GITNAME];
13char git_default_name[MAX_GITNAME];
14int trust_executable_bit = 1;
9378c161 15int quote_path_fully = 1;
78a8d641 16int has_symlinks = 1;
96f1e58f
DR
17int assume_unchanged;
18int prefer_symlink_refs;
7d1864ce 19int is_bare_repository_cfg = -1; /* unspecified */
510c5a8e 20int log_all_ref_updates = -1; /* unspecified */
1b371f56 21int warn_ambiguous_refs = 1;
96f1e58f 22int repository_format_version;
1a8f2741 23const char *git_commit_encoding;
3a55602e 24const char *git_log_output_encoding;
94df2506 25int shared_repository = PERM_UMASK;
96f1e58f 26const char *apply_default_whitespace;
960ccca6
DH
27int zlib_compression_level = Z_BEST_SPEED;
28int core_compression_level;
29int core_compression_seen;
8c82534d
SP
30size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
31size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
18bdec11 32size_t delta_base_cache_limit = 16 * 1024 * 1024;
54adf370 33char *pager_program;
b75a82b7 34int pager_in_use;
aa086eb8 35int pager_use_color = 1;
d7f46334 36int auto_crlf = 0; /* 1: both ways, -1: only when adding git objects */
e1b10391 37
c5fba16c
PH
38static const char *git_dir;
39static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
40
e1b10391
LT
41static void setup_git_env(void)
42{
43 git_dir = getenv(GIT_DIR_ENVIRONMENT);
44 if (!git_dir)
45 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
46 git_object_dir = getenv(DB_ENVIRONMENT);
47 if (!git_object_dir) {
48 git_object_dir = xmalloc(strlen(git_dir) + 9);
49 sprintf(git_object_dir, "%s/objects", git_dir);
50 }
51 git_refs_dir = xmalloc(strlen(git_dir) + 6);
52 sprintf(git_refs_dir, "%s/refs", git_dir);
53 git_index_file = getenv(INDEX_ENVIRONMENT);
54 if (!git_index_file) {
55 git_index_file = xmalloc(strlen(git_dir) + 7);
56 sprintf(git_index_file, "%s/index", git_dir);
57 }
58 git_graft_file = getenv(GRAFT_ENVIRONMENT);
59 if (!git_graft_file)
9befac47 60 git_graft_file = xstrdup(git_path("info/grafts"));
0bee5918
SP
61}
62
7d1864ce 63int is_bare_repository(void)
0bee5918 64{
7d1864ce
JH
65 const char *dir, *s;
66 if (0 <= is_bare_repository_cfg)
67 return is_bare_repository_cfg;
68
69 dir = get_git_dir();
0bee5918
SP
70 if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
71 return 0;
72 s = strrchr(dir, '/');
73 return !s || strcmp(s + 1, DEFAULT_GIT_DIR_ENVIRONMENT);
e1b10391
LT
74}
75
c5fba16c 76const char *get_git_dir(void)
e1b10391
LT
77{
78 if (!git_dir)
79 setup_git_env();
80 return git_dir;
81}
82
83char *get_object_directory(void)
84{
85 if (!git_object_dir)
86 setup_git_env();
87 return git_object_dir;
88}
89
90char *get_refs_directory(void)
91{
92 if (!git_refs_dir)
93 setup_git_env();
94 return git_refs_dir;
95}
96
97char *get_index_file(void)
98{
99 if (!git_index_file)
100 setup_git_env();
101 return git_index_file;
102}
103
104char *get_graft_file(void)
105{
106 if (!git_graft_file)
107 setup_git_env();
108 return git_graft_file;
109}
d7ac12b2
JS
110
111int set_git_dir(const char *path)
112{
113 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
114 return error("Could not set GIT_DIR to '%s'", path);
115 setup_git_env();
116 return 0;
117}