summaryrefslogtreecommitdiff
path: root/environment.c
blob: fcd1ee5ef8c0999fce0095a2d6a792e5d221c50a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
/*
 * We put all the git config variables in this same object
 * file, so that programs can link against the config parser
 * without having to link against all the rest of git.
 *
 * In particular, no need to bring in libz etc unless needed,
 * even if you might want to know where the git directory etc
 * are.
 */
#include "cache.h"

char git_default_email[MAX_GITNAME];
char git_default_name[MAX_GITNAME];
int trust_executable_bit = 1;
int quote_path_fully = 1;
int has_symlinks = 1;
int assume_unchanged;
int prefer_symlink_refs;
int is_bare_repository_cfg = -1; /* unspecified */
int log_all_ref_updates = -1; /* unspecified */
int warn_ambiguous_refs = 1;
int repository_format_version;
const char *git_commit_encoding;
const char *git_log_output_encoding;
int shared_repository = PERM_UMASK;
const char *apply_default_whitespace;
int zlib_compression_level = Z_BEST_SPEED;
int core_compression_level;
int core_compression_seen;
size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
size_t delta_base_cache_limit = 16 * 1024 * 1024;
const char *pager_program;
int pager_use_color = 1;
const char *editor_program;
const char *excludes_file;
int auto_crlf = 0;	/* 1: both ways, -1: only when adding git objects */
enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;

/* This is set by setup_git_dir_gently() and/or git_default_config() */
char *git_work_tree_cfg;
static const char *work_tree;

static const char *git_dir;
static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;

static void setup_git_env(void)
{
	git_dir = getenv(GIT_DIR_ENVIRONMENT);
	if (!git_dir)
		git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
	if (!git_dir)
		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
	git_object_dir = getenv(DB_ENVIRONMENT);
	if (!git_object_dir) {
		git_object_dir = xmalloc(strlen(git_dir) + 9);
		sprintf(git_object_dir, "%s/objects", git_dir);
	}
	git_refs_dir = xmalloc(strlen(git_dir) + 6);
	sprintf(git_refs_dir, "%s/refs", git_dir);
	git_index_file = getenv(INDEX_ENVIRONMENT);
	if (!git_index_file) {
		git_index_file = xmalloc(strlen(git_dir) + 7);
		sprintf(git_index_file, "%s/index", git_dir);
	}
	git_graft_file = getenv(GRAFT_ENVIRONMENT);
	if (!git_graft_file)
		git_graft_file = xstrdup(git_path("info/grafts"));
}

int is_bare_repository(void)
{
	/* if core.bare is not 'false', let's see if there is a work tree */
	return is_bare_repository_cfg && !get_git_work_tree();
}

const char *get_git_dir(void)
{
	if (!git_dir)
		setup_git_env();
	return git_dir;
}

const char *get_git_work_tree(void)
{
	static int initialized = 0;
	if (!initialized) {
		work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
		/* core.bare = true overrides implicit and config work tree */
		if (!work_tree && is_bare_repository_cfg < 1) {
			work_tree = git_work_tree_cfg;
			/* make_absolute_path also normalizes the path */
			if (work_tree && !is_absolute_path(work_tree))
				work_tree = xstrdup(make_absolute_path(git_path(work_tree)));
		} else if (work_tree)
			work_tree = xstrdup(make_absolute_path(work_tree));
		initialized = 1;
		if (work_tree)
			is_bare_repository_cfg = 0;
	}
	return work_tree;
}

char *get_object_directory(void)
{
	if (!git_object_dir)
		setup_git_env();
	return git_object_dir;
}

char *get_refs_directory(void)
{
	if (!git_refs_dir)
		setup_git_env();
	return git_refs_dir;
}

char *get_index_file(void)
{
	if (!git_index_file)
		setup_git_env();
	return git_index_file;
}

char *get_graft_file(void)
{
	if (!git_graft_file)
		setup_git_env();
	return git_graft_file;
}

int set_git_dir(const char *path)
{
	if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
		return error("Could not set GIT_DIR to '%s'", path);
	setup_git_env();
	return 0;
}