environment.c: remove unused variable
[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 *askpass_program;
41 const char *excludes_file;
42 enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
43 int read_replace_refs = 1;
44 enum eol eol = EOL_UNSET;
45 enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
46 unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
47 enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
48 enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
49 enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
50 #ifndef OBJECT_CREATION_MODE
51 #define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
52 #endif
53 enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
54 char *notes_ref_name;
55 int grafts_replace_parents = 1;
56 int core_apply_sparse_checkout;
57 struct startup_info *startup_info;
58
59 /* Parallel index stat data preload? */
60 int core_preload_index = 0;
61
62 /* This is set by setup_git_dir_gently() and/or git_default_config() */
63 char *git_work_tree_cfg;
64 static char *work_tree;
65
66 static const char *git_dir;
67 static char *git_object_dir, *git_index_file, *git_graft_file;
68
69 /*
70 * Repository-local GIT_* environment variables
71 * Remember to update local_repo_env_size in cache.h when
72 * the size of the list changes
73 */
74 const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
75 ALTERNATE_DB_ENVIRONMENT,
76 CONFIG_ENVIRONMENT,
77 CONFIG_DATA_ENVIRONMENT,
78 DB_ENVIRONMENT,
79 GIT_DIR_ENVIRONMENT,
80 GIT_WORK_TREE_ENVIRONMENT,
81 GRAFT_ENVIRONMENT,
82 INDEX_ENVIRONMENT,
83 NO_REPLACE_OBJECTS_ENVIRONMENT,
84 NULL
85 };
86
87 static void setup_git_env(void)
88 {
89 git_dir = getenv(GIT_DIR_ENVIRONMENT);
90 if (!git_dir)
91 git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
92 if (!git_dir)
93 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
94 git_object_dir = getenv(DB_ENVIRONMENT);
95 if (!git_object_dir) {
96 git_object_dir = xmalloc(strlen(git_dir) + 9);
97 sprintf(git_object_dir, "%s/objects", git_dir);
98 }
99 git_index_file = getenv(INDEX_ENVIRONMENT);
100 if (!git_index_file) {
101 git_index_file = xmalloc(strlen(git_dir) + 7);
102 sprintf(git_index_file, "%s/index", git_dir);
103 }
104 git_graft_file = getenv(GRAFT_ENVIRONMENT);
105 if (!git_graft_file)
106 git_graft_file = git_pathdup("info/grafts");
107 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
108 read_replace_refs = 0;
109 }
110
111 int is_bare_repository(void)
112 {
113 /* if core.bare is not 'false', let's see if there is a work tree */
114 return is_bare_repository_cfg && !get_git_work_tree();
115 }
116
117 int have_git_dir(void)
118 {
119 return !!git_dir;
120 }
121
122 const char *get_git_dir(void)
123 {
124 if (!git_dir)
125 setup_git_env();
126 return git_dir;
127 }
128
129 static int git_work_tree_initialized;
130
131 /*
132 * Note. This works only before you used a work tree. This was added
133 * primarily to support git-clone to work in a new repository it just
134 * created, and is not meant to flip between different work trees.
135 */
136 void set_git_work_tree(const char *new_work_tree)
137 {
138 if (is_bare_repository_cfg >= 0)
139 die("cannot set work tree after initialization");
140 git_work_tree_initialized = 1;
141 free(work_tree);
142 work_tree = xstrdup(make_absolute_path(new_work_tree));
143 is_bare_repository_cfg = 0;
144 }
145
146 const char *get_git_work_tree(void)
147 {
148 if (!git_work_tree_initialized) {
149 work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
150 /* core.bare = true overrides implicit and config work tree */
151 if (!work_tree && is_bare_repository_cfg < 1) {
152 work_tree = git_work_tree_cfg;
153 /* make_absolute_path also normalizes the path */
154 if (work_tree && !is_absolute_path(work_tree))
155 work_tree = xstrdup(make_absolute_path(git_path("%s", work_tree)));
156 } else if (work_tree)
157 work_tree = xstrdup(make_absolute_path(work_tree));
158 git_work_tree_initialized = 1;
159 if (work_tree)
160 is_bare_repository_cfg = 0;
161 }
162 return work_tree;
163 }
164
165 char *get_object_directory(void)
166 {
167 if (!git_object_dir)
168 setup_git_env();
169 return git_object_dir;
170 }
171
172 char *get_index_file(void)
173 {
174 if (!git_index_file)
175 setup_git_env();
176 return git_index_file;
177 }
178
179 char *get_graft_file(void)
180 {
181 if (!git_graft_file)
182 setup_git_env();
183 return git_graft_file;
184 }
185
186 int set_git_dir(const char *path)
187 {
188 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
189 return error("Could not set GIT_DIR to '%s'", path);
190 setup_git_env();
191 return 0;
192 }