Merge branch 'nd/sparse'
[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 user_ident_explicitly_given;
15 int trust_executable_bit = 1;
16 int trust_ctime = 1;
17 int has_symlinks = 1;
18 int ignore_case;
19 int assume_unchanged;
20 int prefer_symlink_refs;
21 int is_bare_repository_cfg = -1; /* unspecified */
22 int log_all_ref_updates = -1; /* unspecified */
23 int warn_ambiguous_refs = 1;
24 int repository_format_version;
25 const char *git_commit_encoding;
26 const char *git_log_output_encoding;
27 int shared_repository = PERM_UMASK;
28 const char *apply_default_whitespace;
29 const char *apply_default_ignorewhitespace;
30 int zlib_compression_level = Z_BEST_SPEED;
31 int core_compression_level;
32 int core_compression_seen;
33 int fsync_object_files;
34 size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
35 size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
36 size_t delta_base_cache_limit = 16 * 1024 * 1024;
37 const char *pager_program;
38 int pager_use_color = 1;
39 const char *editor_program;
40 const char *excludes_file;
41 int auto_crlf = 0; /* 1: both ways, -1: only when adding git objects */
42 int read_replace_refs = 1;
43 enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
44 unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
45 enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
46 enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
47 enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
48 #ifndef OBJECT_CREATION_MODE
49 #define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
50 #endif
51 enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
52 char *notes_ref_name;
53 int grafts_replace_parents = 1;
54 int core_apply_sparse_checkout;
55
56 /* Parallel index stat data preload? */
57 int core_preload_index = 0;
58
59 /* This is set by setup_git_dir_gently() and/or git_default_config() */
60 char *git_work_tree_cfg;
61 static char *work_tree;
62
63 static const char *git_dir;
64 static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
65
66 static void setup_git_env(void)
67 {
68 git_dir = getenv(GIT_DIR_ENVIRONMENT);
69 if (!git_dir)
70 git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
71 if (!git_dir)
72 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
73 git_object_dir = getenv(DB_ENVIRONMENT);
74 if (!git_object_dir) {
75 git_object_dir = xmalloc(strlen(git_dir) + 9);
76 sprintf(git_object_dir, "%s/objects", git_dir);
77 }
78 git_refs_dir = xmalloc(strlen(git_dir) + 6);
79 sprintf(git_refs_dir, "%s/refs", git_dir);
80 git_index_file = getenv(INDEX_ENVIRONMENT);
81 if (!git_index_file) {
82 git_index_file = xmalloc(strlen(git_dir) + 7);
83 sprintf(git_index_file, "%s/index", git_dir);
84 }
85 git_graft_file = getenv(GRAFT_ENVIRONMENT);
86 if (!git_graft_file)
87 git_graft_file = git_pathdup("info/grafts");
88 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
89 read_replace_refs = 0;
90 }
91
92 int is_bare_repository(void)
93 {
94 /* if core.bare is not 'false', let's see if there is a work tree */
95 return is_bare_repository_cfg && !get_git_work_tree();
96 }
97
98 int have_git_dir(void)
99 {
100 return !!git_dir;
101 }
102
103 const char *get_git_dir(void)
104 {
105 if (!git_dir)
106 setup_git_env();
107 return git_dir;
108 }
109
110 static int git_work_tree_initialized;
111
112 /*
113 * Note. This works only before you used a work tree. This was added
114 * primarily to support git-clone to work in a new repository it just
115 * created, and is not meant to flip between different work trees.
116 */
117 void set_git_work_tree(const char *new_work_tree)
118 {
119 if (is_bare_repository_cfg >= 0)
120 die("cannot set work tree after initialization");
121 git_work_tree_initialized = 1;
122 free(work_tree);
123 work_tree = xstrdup(make_absolute_path(new_work_tree));
124 is_bare_repository_cfg = 0;
125 }
126
127 const char *get_git_work_tree(void)
128 {
129 if (!git_work_tree_initialized) {
130 work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
131 /* core.bare = true overrides implicit and config work tree */
132 if (!work_tree && is_bare_repository_cfg < 1) {
133 work_tree = git_work_tree_cfg;
134 /* make_absolute_path also normalizes the path */
135 if (work_tree && !is_absolute_path(work_tree))
136 work_tree = xstrdup(make_absolute_path(git_path("%s", work_tree)));
137 } else if (work_tree)
138 work_tree = xstrdup(make_absolute_path(work_tree));
139 git_work_tree_initialized = 1;
140 if (work_tree)
141 is_bare_repository_cfg = 0;
142 }
143 return work_tree;
144 }
145
146 char *get_object_directory(void)
147 {
148 if (!git_object_dir)
149 setup_git_env();
150 return git_object_dir;
151 }
152
153 char *get_index_file(void)
154 {
155 if (!git_index_file)
156 setup_git_env();
157 return git_index_file;
158 }
159
160 char *get_graft_file(void)
161 {
162 if (!git_graft_file)
163 setup_git_env();
164 return git_graft_file;
165 }
166
167 int set_git_dir(const char *path)
168 {
169 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
170 return error("Could not set GIT_DIR to '%s'", path);
171 setup_git_env();
172 return 0;
173 }