If $GIT_SUPER_DIR is defined, the repository is splitted into two
places:
- HEAD, logs/HEAD, index, other top-level refs and unrecognized files
are from $GIT_DIR
- the rest like objects, refs, info, hooks, packed-refs, shallow...
are from $GIT_SUPER_DIR
The redirection is done by git_path(), git_pathdup() and git_snpath()
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
Documentation/git.txt | 8 ++++++
cache.h | 2 ++
environment.c | 11 +++++--
path.c | 28 ++++++++++++++++++
t/t0060-path-utils.sh | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 126 insertions(+), 2 deletions(-)
diff --git a/Documentation/git.txt b/Documentation/git.txt
index 4448ce2..9f4e9f8 100644
--- a/Documentation/git.txt
+++ b/Documentation/git.txt
@@ -764,6 +764,14 @@ Git so take care if using Cogito etc.
an explicit repository directory set via 'GIT_DIR' or on the
command line.
+'GIT_SUPER_DIR'::
+ If this variable is set to a path, non-worktree files that are
+ normally in $GIT_DIR will be taken from this path
+ instead. Worktree-specific files such as HEAD or index are
+ taken from $GIT_DIR. This variable has lower precedence than
+ other path variables such as GIT_INDEX_FILE,
+ GIT_OBJECT_DIRECTORY...
+
Git Commits
~~~~~~~~~~~
'GIT_AUTHOR_NAME'::
diff --git a/cache.h b/cache.h
index cdafbd7..823582f 100644
--- a/cache.h
+++ b/cache.h
@@ -347,6 +347,7 @@ static inline enum object_type object_type(unsigned int mode)
/* Double-check local_repo_env below if you add to this list. */
#define GIT_DIR_ENVIRONMENT "GIT_DIR"
+#define GIT_SUPER_DIR_ENVIRONMENT "GIT_SUPER_DIR"
#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
#define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX"
@@ -399,6 +400,7 @@ extern int is_inside_git_dir(void);
extern char *git_work_tree_cfg;
extern int is_inside_work_tree(void);
extern const char *get_git_dir(void);
+extern const char *get_git_super_dir(void);
extern int is_git_directory(const char *path);
extern char *get_object_directory(void);
extern char *get_index_file(void);
diff --git a/environment.c b/environment.c
index 1d74dde..d5ae7a3 100644
--- a/environment.c
+++ b/environment.c
@@ -79,7 +79,7 @@ static char *work_tree;
static const char *namespace;
static size_t namespace_len;
-static const char *git_dir;
+static const char *git_dir, *git_super_dir;
static char *git_object_dir, *git_index_file, *git_graft_file;
int git_db_env, git_index_env, git_graft_env;
@@ -131,10 +131,12 @@ static void setup_git_env(void)
git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
gitfile = read_gitfile(git_dir);
git_dir = xstrdup(gitfile ? gitfile : git_dir);
+ git_super_dir = getenv(GIT_SUPER_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);
+ sprintf(git_object_dir, "%s/objects",
+ git_super_dir ? git_super_dir : git_dir);
} else
git_db_env = 1;
git_index_file = getenv(INDEX_ENVIRONMENT);
@@ -167,6 +169,11 @@ const char *get_git_dir(void)
return git_dir;
}
+const char *get_git_super_dir(void)
+{
+ return git_super_dir;
+}
+
const char *get_git_namespace(void)
{
if (!namespace)
diff --git a/path.c b/path.c
index 93e3ecc..e51fc35 100644
--- a/path.c
+++ b/path.c
@@ -89,8 +89,34 @@ static void replace_dir(char *buf, size_t n, int len, const char *newdir)
buf[newlen] = '/';
}
+static void update_super_dir(char *buf, size_t n, int git_dir_len)
+{
+ const char *super_dir_list[] = {
+ "branches", "hooks", "info", "logs", "modules",
+ "objects", "refs", "remotes", "rr-cache", "svn", NULL
+ };
+ const char *super_top_file_list[] = {
+ "config", "packed-refs", "shallow", NULL
+ };
+ char *base = buf + git_dir_len;
+ const char **p;
+ if (is_dir_file(base, "logs", "HEAD"))
+ return; /* keep this in $GIT_DIR */
+ for (p = super_dir_list; *p; p++)
+ if (dir_prefix(base, *p)) {
+ replace_dir(buf, n, git_dir_len, get_git_super_dir());
+ return;
+ }
+ for (p = super_top_file_list; *p; p++)
+ if (!strcmp(base, *p)) {
+ replace_dir(buf, n, git_dir_len, get_git_super_dir());
+ return;
+ }
+}
+
static void adjust_git_path(char *buf, size_t n, int git_dir_len)
{
+
char *base = buf + git_dir_len;
if (git_graft_env && is_dir_file(base, "info", "grafts"))
copy_path(buf, n, get_graft_file());
@@ -98,6 +124,8 @@ static void adjust_git_path(char *buf, size_t n, int git_dir_len)
copy_path(buf, n, get_index_file());
else if (git_db_env && dir_prefix(base, "objects"))
replace_dir(buf, n, git_dir_len + 7, get_object_directory());
+ else if (get_git_super_dir())
+ update_super_dir(buf, n, git_dir_len);
}
static char *git_vsnpath(char *buf, size_t n, const char *fmt, va_list args)
diff --git a/t/t0060-path-utils.sh b/t/t0060-path-utils.sh
index bce16f5..5e798c4 100755
--- a/t/t0060-path-utils.sh
+++ b/t/t0060-path-utils.sh
@@ -277,4 +277,83 @@ test_expect_success 'git_path objects2' '
test_cmp expect actual
'
+test_expect_success 'git_path super index' '
+ GIT_SUPER_DIR=foo test-path-utils git_path index >actual &&
+ echo .git/index >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super HEAD' '
+ GIT_SUPER_DIR=foo test-path-utils git_path HEAD >actual &&
+ echo .git/HEAD >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super objects/*' '
+ GIT_SUPER_DIR=foo test-path-utils git_path objects/foo >actual &&
+ echo foo/objects/foo >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super info/*' '
+ GIT_SUPER_DIR=foo test-path-utils git_path info/exclude >actual &&
+ echo foo/info/exclude >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super remotes/*' '
+ GIT_SUPER_DIR=foo test-path-utils git_path remotes/foo >actual &&
+ echo foo/remotes/foo >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super branches/*' '
+ GIT_SUPER_DIR=foo test-path-utils git_path branches/foo >actual &&
+ echo foo/branches/foo >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super logs/refs/heads/master' '
+ GIT_SUPER_DIR=foo test-path-utils git_path logs/refs/heads/master >actual &&
+ echo foo/logs/refs/heads/master >expect &&
+ test_cmp expect actual
+'
+
+
+test_expect_success 'git_path super refs/heads/master' '
+ GIT_SUPER_DIR=foo test-path-utils git_path refs/heads/master >actual &&
+ echo foo/refs/heads/master >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super logs/HEAD' '
+ GIT_SUPER_DIR=foo test-path-utils git_path logs/HEAD >actual &&
+ echo .git/logs/HEAD >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super hooks/me' '
+ GIT_SUPER_DIR=foo test-path-utils git_path hooks/me >actual &&
+ echo foo/hooks/me >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super config' '
+ GIT_SUPER_DIR=foo test-path-utils git_path config >actual &&
+ echo foo/config >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super packed-refs' '
+ GIT_SUPER_DIR=foo test-path-utils git_path packed-refs >actual &&
+ echo foo/packed-refs >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'git_path super shallow' '
+ GIT_SUPER_DIR=foo test-path-utils git_path shallow >actual &&
+ echo foo/shallow >expect &&
+ test_cmp expect actual
+'
+
test_done
--
1.8.5.1.77.g42c48fa
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