submodule: Use cat instead of echo to avoid DOS line-endings
[git/dscho.git] / environment.c
blobbf6f0c29ed9a373de73eb8818b5df9543d5d86b6
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"
11 #include "refs.h"
12 #include "fmt-merge-msg.h"
14 char git_default_email[MAX_GITNAME];
15 char git_default_name[MAX_GITNAME];
16 int user_ident_explicitly_given;
17 int trust_executable_bit = 1;
18 int trust_ctime = 1;
19 int has_symlinks = 1;
20 int minimum_abbrev = 4, default_abbrev = 7;
21 int ignore_case;
22 int assume_unchanged;
23 int prefer_symlink_refs;
24 int is_bare_repository_cfg = -1; /* unspecified */
25 int log_all_ref_updates = -1; /* unspecified */
26 int warn_ambiguous_refs = 1;
27 int repository_format_version;
28 const char *git_commit_encoding;
29 const char *git_log_output_encoding;
30 int shared_repository = PERM_UMASK;
31 const char *apply_default_whitespace;
32 const char *apply_default_ignorewhitespace;
33 const char *git_attributes_file;
34 int zlib_compression_level = Z_BEST_SPEED;
35 int core_compression_level;
36 int core_compression_seen;
37 int fsync_object_files;
38 size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
39 size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
40 size_t delta_base_cache_limit = 16 * 1024 * 1024;
41 unsigned long big_file_threshold = 512 * 1024 * 1024;
42 const char *log_pack_access;
43 const char *pager_program;
44 int pager_use_color = 1;
45 const char *editor_program;
46 const char *askpass_program;
47 const char *excludes_file;
48 enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
49 int read_replace_refs = 1; /* NEEDSWORK: rename to use_replace_refs */
50 enum eol core_eol = EOL_UNSET;
51 enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
52 unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
53 enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
54 enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
55 enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
56 #ifndef OBJECT_CREATION_MODE
57 #define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
58 #endif
59 enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
60 char *notes_ref_name;
61 int grafts_replace_parents = 1;
62 int core_apply_sparse_checkout;
63 int merge_log_config = -1;
64 struct startup_info *startup_info;
65 unsigned long pack_size_limit_cfg;
66 enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
68 /* Parallel index stat data preload? */
69 int core_preload_index = 0;
71 /* This is set by setup_git_dir_gently() and/or git_default_config() */
72 char *git_work_tree_cfg;
73 static char *work_tree;
75 static const char *namespace;
76 static size_t namespace_len;
78 static const char *git_dir;
79 static char *git_object_dir, *git_index_file, *git_graft_file;
82 * Repository-local GIT_* environment variables
83 * Remember to update local_repo_env_size in cache.h when
84 * the size of the list changes
86 const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
87 ALTERNATE_DB_ENVIRONMENT,
88 CONFIG_ENVIRONMENT,
89 CONFIG_DATA_ENVIRONMENT,
90 DB_ENVIRONMENT,
91 GIT_DIR_ENVIRONMENT,
92 GIT_WORK_TREE_ENVIRONMENT,
93 GRAFT_ENVIRONMENT,
94 INDEX_ENVIRONMENT,
95 NO_REPLACE_OBJECTS_ENVIRONMENT,
96 NULL
99 static char *expand_namespace(const char *raw_namespace)
101 struct strbuf buf = STRBUF_INIT;
102 struct strbuf **components, **c;
104 if (!raw_namespace || !*raw_namespace)
105 return xstrdup("");
107 strbuf_addstr(&buf, raw_namespace);
108 components = strbuf_split(&buf, '/');
109 strbuf_reset(&buf);
110 for (c = components; *c; c++)
111 if (strcmp((*c)->buf, "/") != 0)
112 strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
113 strbuf_list_free(components);
114 if (check_refname_format(buf.buf, 0))
115 die("bad git namespace path \"%s\"", raw_namespace);
116 strbuf_addch(&buf, '/');
117 return strbuf_detach(&buf, NULL);
120 static void setup_git_env(void)
122 git_dir = getenv(GIT_DIR_ENVIRONMENT);
123 git_dir = git_dir ? xstrdup(git_dir) : NULL;
124 if (!git_dir) {
125 git_dir = read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT);
126 git_dir = git_dir ? xstrdup(git_dir) : NULL;
128 if (!git_dir)
129 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
130 git_object_dir = getenv(DB_ENVIRONMENT);
131 if (!git_object_dir) {
132 git_object_dir = xmalloc(strlen(git_dir) + 9);
133 sprintf(git_object_dir, "%s/objects", git_dir);
135 git_index_file = getenv(INDEX_ENVIRONMENT);
136 if (!git_index_file) {
137 git_index_file = xmalloc(strlen(git_dir) + 7);
138 sprintf(git_index_file, "%s/index", git_dir);
140 git_graft_file = getenv(GRAFT_ENVIRONMENT);
141 if (!git_graft_file)
142 git_graft_file = git_pathdup("info/grafts");
143 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
144 read_replace_refs = 0;
145 namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
146 namespace_len = strlen(namespace);
149 int is_bare_repository(void)
151 /* if core.bare is not 'false', let's see if there is a work tree */
152 return is_bare_repository_cfg && !get_git_work_tree();
155 int have_git_dir(void)
157 return !!git_dir;
160 const char *get_git_dir(void)
162 if (!git_dir)
163 setup_git_env();
164 return git_dir;
167 const char *get_git_namespace(void)
169 if (!namespace)
170 setup_git_env();
171 return namespace;
174 const char *strip_namespace(const char *namespaced_ref)
176 if (prefixcmp(namespaced_ref, get_git_namespace()) != 0)
177 return NULL;
178 return namespaced_ref + namespace_len;
181 static int git_work_tree_initialized;
184 * Note. This works only before you used a work tree. This was added
185 * primarily to support git-clone to work in a new repository it just
186 * created, and is not meant to flip between different work trees.
188 void set_git_work_tree(const char *new_work_tree)
190 if (git_work_tree_initialized) {
191 new_work_tree = real_path(new_work_tree);
192 if (strcmp(new_work_tree, work_tree))
193 die("internal error: work tree has already been set\n"
194 "Current worktree: %s\nNew worktree: %s",
195 work_tree, new_work_tree);
196 return;
198 git_work_tree_initialized = 1;
199 work_tree = xstrdup(real_path(new_work_tree));
202 const char *get_git_work_tree(void)
204 return work_tree;
207 char *get_object_directory(void)
209 if (!git_object_dir)
210 setup_git_env();
211 return git_object_dir;
214 int odb_mkstemp(char *template, size_t limit, const char *pattern)
216 int fd;
218 * we let the umask do its job, don't try to be more
219 * restrictive except to remove write permission.
221 int mode = 0444;
222 snprintf(template, limit, "%s/%s",
223 get_object_directory(), pattern);
224 fd = git_mkstemp_mode(template, mode);
225 if (0 <= fd)
226 return fd;
228 /* slow path */
229 /* some mkstemp implementations erase template on failure */
230 snprintf(template, limit, "%s/%s",
231 get_object_directory(), pattern);
232 safe_create_leading_directories(template);
233 return xmkstemp_mode(template, mode);
236 int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1)
238 int fd;
240 snprintf(name, namesz, "%s/pack/pack-%s.keep",
241 get_object_directory(), sha1_to_hex(sha1));
242 fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
243 if (0 <= fd)
244 return fd;
246 /* slow path */
247 safe_create_leading_directories(name);
248 return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
251 char *get_index_file(void)
253 if (!git_index_file)
254 setup_git_env();
255 return git_index_file;
258 char *get_graft_file(void)
260 if (!git_graft_file)
261 setup_git_env();
262 return git_graft_file;
265 int set_git_dir(const char *path)
267 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
268 return error("Could not set GIT_DIR to '%s'", path);
269 setup_git_env();
270 return 0;
273 const char *get_log_output_encoding(void)
275 return git_log_output_encoding ? git_log_output_encoding
276 : get_commit_output_encoding();
279 const char *get_commit_output_encoding(void)
281 return git_commit_encoding ? git_commit_encoding : "UTF-8";