Merge branch 'lt/core-optim'
[git/git.git] / environment.c
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
12 char git_default_email[MAX_GITNAME];
13 char git_default_name[MAX_GITNAME];
14 int trust_executable_bit = 1;
15 int quote_path_fully = 1;
16 int has_symlinks = 1;
17 int ignore_case;
18 int assume_unchanged;
19 int prefer_symlink_refs;
20 int is_bare_repository_cfg = -1; /* unspecified */
21 int log_all_ref_updates = -1; /* unspecified */
22 int warn_ambiguous_refs = 1;
23 int repository_format_version;
24 const char *git_commit_encoding;
25 const char *git_log_output_encoding;
26 int shared_repository = PERM_UMASK;
27 const char *apply_default_whitespace;
28 int zlib_compression_level = Z_BEST_SPEED;
29 int core_compression_level;
30 int core_compression_seen;
31 size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
32 size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
33 size_t delta_base_cache_limit = 16 * 1024 * 1024;
34 const char *pager_program;
35 int pager_use_color = 1;
36 const char *editor_program;
37 const char *excludes_file;
38 int auto_crlf = 0; /* 1: both ways, -1: only when adding git objects */
39 enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
40 unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
41 enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
42 enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
43
44 /* This is set by setup_git_dir_gently() and/or git_default_config() */
45 char *git_work_tree_cfg;
46 static const char *work_tree;
47
48 static const char *git_dir;
49 static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
50
51 static void setup_git_env(void)
52 {
53 git_dir = getenv(GIT_DIR_ENVIRONMENT);
54 if (!git_dir)
55 git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
56 if (!git_dir)
57 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
58 git_object_dir = getenv(DB_ENVIRONMENT);
59 if (!git_object_dir) {
60 git_object_dir = xmalloc(strlen(git_dir) + 9);
61 sprintf(git_object_dir, "%s/objects", git_dir);
62 }
63 git_refs_dir = xmalloc(strlen(git_dir) + 6);
64 sprintf(git_refs_dir, "%s/refs", git_dir);
65 git_index_file = getenv(INDEX_ENVIRONMENT);
66 if (!git_index_file) {
67 git_index_file = xmalloc(strlen(git_dir) + 7);
68 sprintf(git_index_file, "%s/index", git_dir);
69 }
70 git_graft_file = getenv(GRAFT_ENVIRONMENT);
71 if (!git_graft_file)
72 git_graft_file = xstrdup(git_path("info/grafts"));
73 }
74
75 int is_bare_repository(void)
76 {
77 /* if core.bare is not 'false', let's see if there is a work tree */
78 return is_bare_repository_cfg && !get_git_work_tree();
79 }
80
81 const char *get_git_dir(void)
82 {
83 if (!git_dir)
84 setup_git_env();
85 return git_dir;
86 }
87
88 const char *get_git_work_tree(void)
89 {
90 static int initialized = 0;
91 if (!initialized) {
92 work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
93 /* core.bare = true overrides implicit and config work tree */
94 if (!work_tree && is_bare_repository_cfg < 1) {
95 work_tree = git_work_tree_cfg;
96 /* make_absolute_path also normalizes the path */
97 if (work_tree && !is_absolute_path(work_tree))
98 work_tree = xstrdup(make_absolute_path(git_path(work_tree)));
99 } else if (work_tree)
100 work_tree = xstrdup(make_absolute_path(work_tree));
101 initialized = 1;
102 if (work_tree)
103 is_bare_repository_cfg = 0;
104 }
105 return work_tree;
106 }
107
108 char *get_object_directory(void)
109 {
110 if (!git_object_dir)
111 setup_git_env();
112 return git_object_dir;
113 }
114
115 char *get_refs_directory(void)
116 {
117 if (!git_refs_dir)
118 setup_git_env();
119 return git_refs_dir;
120 }
121
122 char *get_index_file(void)
123 {
124 if (!git_index_file)
125 setup_git_env();
126 return git_index_file;
127 }
128
129 char *get_graft_file(void)
130 {
131 if (!git_graft_file)
132 setup_git_env();
133 return git_graft_file;
134 }
135
136 int set_git_dir(const char *path)
137 {
138 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
139 return error("Could not set GIT_DIR to '%s'", path);
140 setup_git_env();
141 return 0;
142 }