Documentation: document show -s
[git/git.git] / environment.c
CommitLineData
e1b10391
LT
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
12char git_default_email[MAX_GITNAME];
13char git_default_name[MAX_GITNAME];
bb1ae3f6 14int user_ident_explicitly_given;
e1b10391 15int trust_executable_bit = 1;
1ce4790b 16int trust_ctime = 1;
78a8d641 17int has_symlinks = 1;
0a9b88b7 18int ignore_case;
96f1e58f
DR
19int assume_unchanged;
20int prefer_symlink_refs;
7d1864ce 21int is_bare_repository_cfg = -1; /* unspecified */
510c5a8e 22int log_all_ref_updates = -1; /* unspecified */
1b371f56 23int warn_ambiguous_refs = 1;
96f1e58f 24int repository_format_version;
1a8f2741 25const char *git_commit_encoding;
3a55602e 26const char *git_log_output_encoding;
94df2506 27int shared_repository = PERM_UMASK;
96f1e58f 28const char *apply_default_whitespace;
86c91f91 29const char *apply_default_ignorewhitespace;
960ccca6
DH
30int zlib_compression_level = Z_BEST_SPEED;
31int core_compression_level;
32int core_compression_seen;
aafe9fba 33int fsync_object_files;
8c82534d
SP
34size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
35size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
18bdec11 36size_t delta_base_cache_limit = 16 * 1024 * 1024;
872da32d 37const char *pager_program;
aa086eb8 38int pager_use_color = 1;
ee9601e6 39const char *editor_program;
d3e7da89 40const char *askpass_program;
dfb068be 41const char *excludes_file;
fd6cce9e 42enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
dae556bd 43int read_replace_refs = 1;
942e7747 44enum eol eol = EOL_UNSET;
21e5ad50 45enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
cf1b7869 46unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
9ed36cfa 47enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
c998ae9b 48enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
bba0fd22 49enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
348df166
JS
50#ifndef OBJECT_CREATION_MODE
51#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
be66a6c4 52#endif
348df166 53enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
a97a7468 54char *notes_ref_name;
7f3140cd 55int grafts_replace_parents = 1;
08aefc9e 56int core_apply_sparse_checkout;
e37c1329 57struct startup_info *startup_info;
e1b10391 58
671c9b7e
LT
59/* Parallel index stat data preload? */
60int core_preload_index = 0;
61
e90fdc39
JS
62/* This is set by setup_git_dir_gently() and/or git_default_config() */
63char *git_work_tree_cfg;
19757d80 64static char *work_tree;
e90fdc39 65
c5fba16c 66static const char *git_dir;
7f7868ea 67static char *git_object_dir, *git_index_file, *git_graft_file;
c5fba16c 68
48a7c1c4
GB
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 */
74const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
75 ALTERNATE_DB_ENVIRONMENT,
76 CONFIG_ENVIRONMENT,
655e8d9c 77 CONFIG_DATA_ENVIRONMENT,
48a7c1c4
GB
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
e1b10391
LT
87static void setup_git_env(void)
88{
89 git_dir = getenv(GIT_DIR_ENVIRONMENT);
06f3549d 90 if (!git_dir) {
b44ebb19 91 git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
06f3549d
JN
92 git_dir = git_dir ? xstrdup(git_dir) : NULL;
93 }
e1b10391
LT
94 if (!git_dir)
95 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
96 git_object_dir = getenv(DB_ENVIRONMENT);
97 if (!git_object_dir) {
98 git_object_dir = xmalloc(strlen(git_dir) + 9);
99 sprintf(git_object_dir, "%s/objects", git_dir);
100 }
e1b10391
LT
101 git_index_file = getenv(INDEX_ENVIRONMENT);
102 if (!git_index_file) {
103 git_index_file = xmalloc(strlen(git_dir) + 7);
104 sprintf(git_index_file, "%s/index", git_dir);
105 }
106 git_graft_file = getenv(GRAFT_ENVIRONMENT);
107 if (!git_graft_file)
a4f34cbb 108 git_graft_file = git_pathdup("info/grafts");
6476b38b
CC
109 if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
110 read_replace_refs = 0;
0bee5918
SP
111}
112
7d1864ce 113int is_bare_repository(void)
0bee5918 114{
e90fdc39
JS
115 /* if core.bare is not 'false', let's see if there is a work tree */
116 return is_bare_repository_cfg && !get_git_work_tree();
e1b10391
LT
117}
118
d2b0708e
DP
119int have_git_dir(void)
120{
121 return !!git_dir;
122}
123
c5fba16c 124const char *get_git_dir(void)
e1b10391
LT
125{
126 if (!git_dir)
127 setup_git_env();
128 return git_dir;
129}
130
19757d80
DB
131static int git_work_tree_initialized;
132
133/*
134 * Note. This works only before you used a work tree. This was added
135 * primarily to support git-clone to work in a new repository it just
136 * created, and is not meant to flip between different work trees.
137 */
138void set_git_work_tree(const char *new_work_tree)
139{
140 if (is_bare_repository_cfg >= 0)
141 die("cannot set work tree after initialization");
142 git_work_tree_initialized = 1;
143 free(work_tree);
144 work_tree = xstrdup(make_absolute_path(new_work_tree));
145 is_bare_repository_cfg = 0;
146}
147
e90fdc39
JS
148const char *get_git_work_tree(void)
149{
19757d80 150 if (!git_work_tree_initialized) {
e90fdc39
JS
151 work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
152 /* core.bare = true overrides implicit and config work tree */
153 if (!work_tree && is_bare_repository_cfg < 1) {
154 work_tree = git_work_tree_cfg;
155 /* make_absolute_path also normalizes the path */
156 if (work_tree && !is_absolute_path(work_tree))
9db56f71 157 work_tree = xstrdup(make_absolute_path(git_path("%s", work_tree)));
e90fdc39
JS
158 } else if (work_tree)
159 work_tree = xstrdup(make_absolute_path(work_tree));
19757d80 160 git_work_tree_initialized = 1;
e90fdc39
JS
161 if (work_tree)
162 is_bare_repository_cfg = 0;
163 }
164 return work_tree;
165}
166
e1b10391
LT
167char *get_object_directory(void)
168{
169 if (!git_object_dir)
170 setup_git_env();
171 return git_object_dir;
172}
173
e1b10391
LT
174char *get_index_file(void)
175{
176 if (!git_index_file)
177 setup_git_env();
178 return git_index_file;
179}
180
181char *get_graft_file(void)
182{
183 if (!git_graft_file)
184 setup_git_env();
185 return git_graft_file;
186}
d7ac12b2
JS
187
188int set_git_dir(const char *path)
189{
190 if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
191 return error("Could not set GIT_DIR to '%s'", path);
192 setup_git_env();
193 return 0;
194}