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[git/mjg.git] / environment.c
blob40185bc854ea2c5b8d2e3deb800dd6f3f44482a9
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.
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"
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 minimum_abbrev = 4, default_abbrev = 7;
19 int ignore_case;
20 int assume_unchanged;
21 int prefer_symlink_refs;
22 int is_bare_repository_cfg = -1; /* unspecified */
23 int log_all_ref_updates = -1; /* unspecified */
24 int warn_ambiguous_refs = 1;
25 int repository_format_version;
26 const char *git_commit_encoding;
27 const char *git_log_output_encoding;
28 int shared_repository = PERM_UMASK;
29 const char *apply_default_whitespace;
30 const char *apply_default_ignorewhitespace;
31 int zlib_compression_level = Z_BEST_SPEED;
32 int core_compression_level;
33 int core_compression_seen;
34 int fsync_object_files;
35 size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
36 size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
37 size_t delta_base_cache_limit = 16 * 1024 * 1024;
38 unsigned long big_file_threshold = 512 * 1024 * 1024;
39 const char *pager_program;
40 int pager_use_color = 1;
41 const char *editor_program;
42 const char *askpass_program;
43 const char *excludes_file;
44 enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
45 int read_replace_refs = 1;
46 enum eol eol = EOL_UNSET;
47 enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
48 unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
49 enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
50 enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
51 enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
52 #ifndef OBJECT_CREATION_MODE
53 #define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
54 #endif
55 enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
56 char *notes_ref_name;
57 int grafts_replace_parents = 1;
58 int core_apply_sparse_checkout;
59 struct startup_info *startup_info;
61 /* Parallel index stat data preload? */
62 int core_preload_index = 0;
64 /* This is set by setup_git_dir_gently() and/or git_default_config() */
65 char *git_work_tree_cfg;
66 static char *work_tree;
68 static const char *git_dir;
69 static char *git_object_dir, *git_index_file, *git_graft_file;
72 * Repository-local GIT_* environment variables
73 * Remember to update local_repo_env_size in cache.h when
74 * the size of the list changes
76 const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
77 ALTERNATE_DB_ENVIRONMENT,
78 CONFIG_ENVIRONMENT,
79 CONFIG_DATA_ENVIRONMENT,
80 DB_ENVIRONMENT,
81 GIT_DIR_ENVIRONMENT,
82 GIT_WORK_TREE_ENVIRONMENT,
83 GRAFT_ENVIRONMENT,
84 INDEX_ENVIRONMENT,
85 NO_REPLACE_OBJECTS_ENVIRONMENT,
86 NULL
89 static void setup_git_env(void)
91 git_dir = getenv(GIT_DIR_ENVIRONMENT);
92 git_dir = git_dir ? xstrdup(git_dir) : NULL;
93 if (!git_dir) {
94 git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
95 git_dir = git_dir ? xstrdup(git_dir) : NULL;
97 if (!git_dir)
98 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
99 git_object_dir = getenv(DB_ENVIRONMENT);
100 if (!git_object_dir) {
101 git_object_dir = xmalloc(strlen(git_dir) + 9);
102 sprintf(git_object_dir, "%s/objects", git_dir);
104 git_index_file = getenv(INDEX_ENVIRONMENT);
105 if (!git_index_file) {
106 git_index_file = xmalloc(strlen(git_dir) + 7);
107 sprintf(git_index_file, "%s/index", git_dir);
109 git_graft_file = getenv(GRAFT_ENVIRONMENT);
110 if (!git_graft_file)
111 git_graft_file = git_pathdup("info/grafts");
112 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
113 read_replace_refs = 0;
116 int is_bare_repository(void)
118 /* if core.bare is not 'false', let's see if there is a work tree */
119 return is_bare_repository_cfg && !get_git_work_tree();
122 int have_git_dir(void)
124 return !!git_dir;
127 const char *get_git_dir(void)
129 if (!git_dir)
130 setup_git_env();
131 return git_dir;
134 static int git_work_tree_initialized;
137 * Note. This works only before you used a work tree. This was added
138 * primarily to support git-clone to work in a new repository it just
139 * created, and is not meant to flip between different work trees.
141 void set_git_work_tree(const char *new_work_tree)
143 if (git_work_tree_initialized) {
144 new_work_tree = real_path(new_work_tree);
145 if (strcmp(new_work_tree, work_tree))
146 die("internal error: work tree has already been set\n"
147 "Current worktree: %s\nNew worktree: %s",
148 work_tree, new_work_tree);
149 return;
151 git_work_tree_initialized = 1;
152 work_tree = xstrdup(real_path(new_work_tree));
155 const char *get_git_work_tree(void)
157 return work_tree;
160 char *get_object_directory(void)
162 if (!git_object_dir)
163 setup_git_env();
164 return git_object_dir;
167 int odb_mkstemp(char *template, size_t limit, const char *pattern)
169 int fd;
171 * we let the umask do its job, don't try to be more
172 * restrictive except to remove write permission.
174 int mode = 0444;
175 snprintf(template, limit, "%s/%s",
176 get_object_directory(), pattern);
177 fd = git_mkstemp_mode(template, mode);
178 if (0 <= fd)
179 return fd;
181 /* slow path */
182 /* some mkstemp implementations erase template on failure */
183 snprintf(template, limit, "%s/%s",
184 get_object_directory(), pattern);
185 safe_create_leading_directories(template);
186 return xmkstemp_mode(template, mode);
189 int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
191 int fd;
193 snprintf(name, namesz, "%s/pack/pack-%s.keep",
194 get_object_directory(), sha1_to_hex(sha1));
195 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
196 if (0 <= fd)
197 return fd;
199 /* slow path */
200 safe_create_leading_directories(name);
201 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
204 char *get_index_file(void)
206 if (!git_index_file)
207 setup_git_env();
208 return git_index_file;
211 char *get_graft_file(void)
213 if (!git_graft_file)
214 setup_git_env();
215 return git_graft_file;
218 int set_git_dir(const char *path)
220 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
221 return error("Could not set GIT_DIR to '%s'", path);
222 setup_git_env();
223 return 0;
226 const char *get_log_output_encoding(void)
228 return git_log_output_encoding ? git_log_output_encoding
229 : get_commit_output_encoding();
232 const char *get_commit_output_encoding(void)
234 return git_commit_encoding ? git_commit_encoding : "UTF-8";