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lvzhengyang
git2
Commits
ea817863
Commit
ea817863
authored
Jul 09, 2012
by
Ben Straub
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212 deletions
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-212
src/clone.c
+212
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src/clone.c
View file @
ea817863
...
...
@@ -28,128 +28,128 @@
GIT_BEGIN_DECL
struct
HeadInfo
{
git_repository
*
repo
;
git_oid
remote_head_oid
;
git_buf
branchname
;
git_repository
*
repo
;
git_oid
remote_head_oid
;
git_buf
branchname
;
};
static
int
create_tracking_branch
(
git_repository
*
repo
,
const
git_oid
*
target
,
const
char
*
name
)
{
git_object
*
head_obj
=
NULL
;
git_oid
branch_oid
;
int
retcode
=
GIT_ERROR
;
/* Find the target commit */
if
(
git_object_lookup
(
&
head_obj
,
repo
,
target
,
GIT_OBJ_ANY
)
<
0
)
return
GIT_ERROR
;
/* Create the new branch */
if
(
!
git_branch_create
(
&
branch_oid
,
repo
,
name
,
head_obj
,
0
))
{
/* Set up tracking */
git_config
*
cfg
;
if
(
!
git_repository_config
(
&
cfg
,
repo
))
{
git_buf
remote
=
GIT_BUF_INIT
;
git_buf
merge
=
GIT_BUF_INIT
;
git_buf
merge_target
=
GIT_BUF_INIT
;
if
(
!
git_buf_printf
(
&
remote
,
"branch.%s.remote"
,
name
)
&&
!
git_buf_printf
(
&
merge
,
"branch.%s.merge"
,
name
)
&&
!
git_buf_printf
(
&
merge_target
,
"refs/heads/%s"
,
name
)
&&
!
git_config_set_string
(
cfg
,
git_buf_cstr
(
&
remote
),
"origin"
)
&&
!
git_config_set_string
(
cfg
,
git_buf_cstr
(
&
merge
),
git_buf_cstr
(
&
merge_target
)))
{
retcode
=
0
;
}
git_buf_free
(
&
remote
);
git_buf_free
(
&
merge
);
git_buf_free
(
&
merge_target
);
git_config_free
(
cfg
);
}
}
git_object_free
(
head_obj
);
return
retcode
;
git_object
*
head_obj
=
NULL
;
git_oid
branch_oid
;
int
retcode
=
GIT_ERROR
;
/* Find the target commit */
if
(
git_object_lookup
(
&
head_obj
,
repo
,
target
,
GIT_OBJ_ANY
)
<
0
)
return
GIT_ERROR
;
/* Create the new branch */
if
(
!
git_branch_create
(
&
branch_oid
,
repo
,
name
,
head_obj
,
0
))
{
/* Set up tracking */
git_config
*
cfg
;
if
(
!
git_repository_config
(
&
cfg
,
repo
))
{
git_buf
remote
=
GIT_BUF_INIT
;
git_buf
merge
=
GIT_BUF_INIT
;
git_buf
merge_target
=
GIT_BUF_INIT
;
if
(
!
git_buf_printf
(
&
remote
,
"branch.%s.remote"
,
name
)
&&
!
git_buf_printf
(
&
merge
,
"branch.%s.merge"
,
name
)
&&
!
git_buf_printf
(
&
merge_target
,
"refs/heads/%s"
,
name
)
&&
!
git_config_set_string
(
cfg
,
git_buf_cstr
(
&
remote
),
"origin"
)
&&
!
git_config_set_string
(
cfg
,
git_buf_cstr
(
&
merge
),
git_buf_cstr
(
&
merge_target
)))
{
retcode
=
0
;
}
git_buf_free
(
&
remote
);
git_buf_free
(
&
merge
);
git_buf_free
(
&
merge_target
);
git_config_free
(
cfg
);
}
}
git_object_free
(
head_obj
);
return
retcode
;
}
static
int
reference_matches_remote_head
(
const
char
*
head_name
,
void
*
payload
)
{
struct
HeadInfo
*
head_info
=
(
struct
HeadInfo
*
)
payload
;
git_oid
oid
;
/* Stop looking if we've already found a match */
if
(
git_buf_len
(
&
head_info
->
branchname
)
>
0
)
return
0
;
if
(
!
git_reference_name_to_oid
(
&
oid
,
head_info
->
repo
,
head_name
)
&&
!
git_oid_cmp
(
&
head_info
->
remote_head_oid
,
&
oid
))
{
git_buf_puts
(
&
head_info
->
branchname
,
head_name
+
strlen
(
"refs/remotes/origin/"
));
}
return
0
;
struct
HeadInfo
*
head_info
=
(
struct
HeadInfo
*
)
payload
;
git_oid
oid
;
/* Stop looking if we've already found a match */
if
(
git_buf_len
(
&
head_info
->
branchname
)
>
0
)
return
0
;
if
(
!
git_reference_name_to_oid
(
&
oid
,
head_info
->
repo
,
head_name
)
&&
!
git_oid_cmp
(
&
head_info
->
remote_head_oid
,
&
oid
))
{
git_buf_puts
(
&
head_info
->
branchname
,
head_name
+
strlen
(
"refs/remotes/origin/"
));
}
return
0
;
}
static
int
update_head_to_new_branch
(
git_repository
*
repo
,
const
git_oid
*
target
,
const
char
*
name
)
{
int
retcode
=
GIT_ERROR
;
if
(
!
create_tracking_branch
(
repo
,
target
,
name
))
{
git_reference
*
head
;
if
(
!
git_reference_lookup
(
&
head
,
repo
,
GIT_HEAD_FILE
))
{
git_buf
targetbuf
=
GIT_BUF_INIT
;
if
(
!
git_buf_printf
(
&
targetbuf
,
"refs/heads/%s"
,
name
)
&&
!
git_reference_set_target
(
head
,
git_buf_cstr
(
&
targetbuf
)))
{
/* Read the tree into the index */
git_commit
*
commit
;
if
(
!
git_commit_lookup
(
&
commit
,
repo
,
target
))
{
git_tree
*
tree
;
if
(
!
git_commit_tree
(
&
tree
,
commit
))
{
git_index
*
index
;
if
(
!
git_repository_index
(
&
index
,
repo
))
{
if
(
!
git_index_read_tree
(
index
,
tree
))
{
git_index_write
(
index
);
retcode
=
0
;
}
git_index_free
(
index
);
}
git_tree_free
(
tree
);
}
git_commit_free
(
commit
);
}
}
git_buf_free
(
&
targetbuf
);
git_reference_free
(
head
);
}
}
return
retcode
;
int
retcode
=
GIT_ERROR
;
if
(
!
create_tracking_branch
(
repo
,
target
,
name
))
{
git_reference
*
head
;
if
(
!
git_reference_lookup
(
&
head
,
repo
,
GIT_HEAD_FILE
))
{
git_buf
targetbuf
=
GIT_BUF_INIT
;
if
(
!
git_buf_printf
(
&
targetbuf
,
"refs/heads/%s"
,
name
)
&&
!
git_reference_set_target
(
head
,
git_buf_cstr
(
&
targetbuf
)))
{
/* Read the tree into the index */
git_commit
*
commit
;
if
(
!
git_commit_lookup
(
&
commit
,
repo
,
target
))
{
git_tree
*
tree
;
if
(
!
git_commit_tree
(
&
tree
,
commit
))
{
git_index
*
index
;
if
(
!
git_repository_index
(
&
index
,
repo
))
{
if
(
!
git_index_read_tree
(
index
,
tree
))
{
git_index_write
(
index
);
retcode
=
0
;
}
git_index_free
(
index
);
}
git_tree_free
(
tree
);
}
git_commit_free
(
commit
);
}
}
git_buf_free
(
&
targetbuf
);
git_reference_free
(
head
);
}
}
return
retcode
;
}
static
int
update_head_to_remote
(
git_repository
*
repo
,
git_remote
*
remote
)
{
int
retcode
=
GIT_ERROR
;
git_remote_head
*
remote_head
;
git_oid
oid
;
struct
HeadInfo
head_info
;
/* Get the remote's HEAD. This is always the first ref in remote->refs. */
remote_head
=
remote
->
refs
.
contents
[
0
];
git_oid_cpy
(
&
head_info
.
remote_head_oid
,
&
remote_head
->
oid
);
git_buf_init
(
&
head_info
.
branchname
,
16
);
head_info
.
repo
=
repo
;
/* Check to see if "master" matches the remote head */
if
(
!
git_reference_name_to_oid
(
&
oid
,
repo
,
"refs/remotes/origin/master"
)
&&
!
git_oid_cmp
(
&
remote_head
->
oid
,
&
oid
))
{
retcode
=
update_head_to_new_branch
(
repo
,
&
oid
,
"master"
);
}
/* Not master. Check all the other refs. */
else
if
(
!
git_reference_foreach
(
repo
,
GIT_REF_LISTALL
,
reference_matches_remote_head
,
&
head_info
)
&&
git_buf_len
(
&
head_info
.
branchname
)
>
0
)
{
retcode
=
update_head_to_new_branch
(
repo
,
&
head_info
.
remote_head_oid
,
git_buf_cstr
(
&
head_info
.
branchname
));
}
git_buf_free
(
&
head_info
.
branchname
);
return
retcode
;
int
retcode
=
GIT_ERROR
;
git_remote_head
*
remote_head
;
git_oid
oid
;
struct
HeadInfo
head_info
;
/* Get the remote's HEAD. This is always the first ref in remote->refs. */
remote_head
=
remote
->
refs
.
contents
[
0
];
git_oid_cpy
(
&
head_info
.
remote_head_oid
,
&
remote_head
->
oid
);
git_buf_init
(
&
head_info
.
branchname
,
16
);
head_info
.
repo
=
repo
;
/* Check to see if "master" matches the remote head */
if
(
!
git_reference_name_to_oid
(
&
oid
,
repo
,
"refs/remotes/origin/master"
)
&&
!
git_oid_cmp
(
&
remote_head
->
oid
,
&
oid
))
{
retcode
=
update_head_to_new_branch
(
repo
,
&
oid
,
"master"
);
}
/* Not master. Check all the other refs. */
else
if
(
!
git_reference_foreach
(
repo
,
GIT_REF_LISTALL
,
reference_matches_remote_head
,
&
head_info
)
&&
git_buf_len
(
&
head_info
.
branchname
)
>
0
)
{
retcode
=
update_head_to_new_branch
(
repo
,
&
head_info
.
remote_head_oid
,
git_buf_cstr
(
&
head_info
.
branchname
));
}
git_buf_free
(
&
head_info
.
branchname
);
return
retcode
;
}
/*
...
...
@@ -161,151 +161,151 @@ static int update_head_to_remote(git_repository *repo, git_remote *remote)
static
int
setup_remotes_and_fetch
(
git_repository
*
repo
,
const
char
*
origin_url
,
git_indexer_stats
*
stats
)
const
char
*
origin_url
,
git_indexer_stats
*
stats
)
{
int
retcode
=
GIT_ERROR
;
git_remote
*
origin
=
NULL
;
git_off_t
bytes
=
0
;
git_indexer_stats
dummy_stats
;
if
(
!
stats
)
stats
=
&
dummy_stats
;
/* Create the "origin" remote */
if
(
!
git_remote_add
(
&
origin
,
repo
,
"origin"
,
origin_url
))
{
/* Connect and download everything */
if
(
!
git_remote_connect
(
origin
,
GIT_DIR_FETCH
))
{
if
(
!
git_remote_download
(
origin
,
&
bytes
,
stats
))
{
/* Create "origin/foo" branches for all remote branches */
if
(
!
git_remote_update_tips
(
origin
,
NULL
))
{
/* Point HEAD to the same ref as the remote's head */
if
(
!
update_head_to_remote
(
repo
,
origin
))
{
retcode
=
0
;
}
}
}
git_remote_disconnect
(
origin
);
}
git_remote_free
(
origin
);
}
return
retcode
;
int
retcode
=
GIT_ERROR
;
git_remote
*
origin
=
NULL
;
git_off_t
bytes
=
0
;
git_indexer_stats
dummy_stats
;
if
(
!
stats
)
stats
=
&
dummy_stats
;
/* Create the "origin" remote */
if
(
!
git_remote_add
(
&
origin
,
repo
,
"origin"
,
origin_url
))
{
/* Connect and download everything */
if
(
!
git_remote_connect
(
origin
,
GIT_DIR_FETCH
))
{
if
(
!
git_remote_download
(
origin
,
&
bytes
,
stats
))
{
/* Create "origin/foo" branches for all remote branches */
if
(
!
git_remote_update_tips
(
origin
,
NULL
))
{
/* Point HEAD to the same ref as the remote's head */
if
(
!
update_head_to_remote
(
repo
,
origin
))
{
retcode
=
0
;
}
}
}
git_remote_disconnect
(
origin
);
}
git_remote_free
(
origin
);
}
return
retcode
;
}
static
bool
is_dot_or_dotdot
(
const
char
*
name
)
{
return
(
name
[
0
]
==
'.'
&&
(
name
[
1
]
==
'\0'
||
(
name
[
1
]
==
'.'
&&
name
[
2
]
==
'\0'
)));
return
(
name
[
0
]
==
'.'
&&
(
name
[
1
]
==
'\0'
||
(
name
[
1
]
==
'.'
&&
name
[
2
]
==
'\0'
)));
}
/* TODO: p_opendir, p_closedir */
static
bool
path_is_okay
(
const
char
*
path
)
{
#ifdef GIT_WIN32
HANDLE
hFind
=
INVALID_HANDLE_VALUE
;
wchar_t
*
wbuf
;
WIN32_FIND_DATAW
ffd
;
HANDLE
hFind
=
INVALID_HANDLE_VALUE
;
wchar_t
*
wbuf
;
WIN32_FIND_DATAW
ffd
;
#else
DIR
*
dir
=
NULL
;
struct
dirent
*
e
;
DIR
*
dir
=
NULL
;
struct
dirent
*
e
;
#endif
bool
retval
=
true
;
bool
retval
=
true
;
/* The path must either not exist, or be an empty directory */
if
(
!
git_path_exists
(
path
))
return
true
;
/* The path must either not exist, or be an empty directory */
if
(
!
git_path_exists
(
path
))
return
true
;
if
(
!
git_path_isdir
(
path
))
{
giterr_set
(
GITERR_INVALID
,
"'%s' exists and is not an empty directory"
,
path
);
return
false
;
}
if
(
!
git_path_isdir
(
path
))
{
giterr_set
(
GITERR_INVALID
,
"'%s' exists and is not an empty directory"
,
path
);
return
false
;
}
#ifdef GIT_WIN32
wbuf
=
gitwin_to_utf16
(
path
);
gitwin_append_utf16
(
wbuf
,
"
\\
*"
,
2
);
hFind
=
FindFirstFileW
(
wbuf
,
&
ffd
);
if
(
INVALID_HANDLE_VALUE
!=
hFind
)
{
retval
=
false
;
FindClose
(
hFind
);
}
git__free
(
wbuf
);
wbuf
=
gitwin_to_utf16
(
path
);
gitwin_append_utf16
(
wbuf
,
"
\\
*"
,
2
);
hFind
=
FindFirstFileW
(
wbuf
,
&
ffd
);
if
(
INVALID_HANDLE_VALUE
!=
hFind
)
{
retval
=
false
;
FindClose
(
hFind
);
}
git__free
(
wbuf
);
#else
dir
=
opendir
(
path
);
if
(
!
dir
)
{
giterr_set
(
GITERR_OS
,
"Couldn't open '%s'"
,
path
);
return
false
;
}
while
((
e
=
readdir
(
dir
))
!=
NULL
)
{
if
(
!
is_dot_or_dotdot
(
e
->
d_name
))
{
giterr_set
(
GITERR_INVALID
,
"'%s' exists and is not an empty directory"
,
path
);
retval
=
false
;
break
;
}
}
closedir
(
dir
);
dir
=
opendir
(
path
);
if
(
!
dir
)
{
giterr_set
(
GITERR_OS
,
"Couldn't open '%s'"
,
path
);
return
false
;
}
while
((
e
=
readdir
(
dir
))
!=
NULL
)
{
if
(
!
is_dot_or_dotdot
(
e
->
d_name
))
{
giterr_set
(
GITERR_INVALID
,
"'%s' exists and is not an empty directory"
,
path
);
retval
=
false
;
break
;
}
}
closedir
(
dir
);
#endif
return
retval
;
return
retval
;
}
static
int
clone_internal
(
git_repository
**
out
,
const
char
*
origin_url
,
const
char
*
path
,
git_indexer_stats
*
stats
,
int
is_bare
)
const
char
*
origin_url
,
const
char
*
path
,
git_indexer_stats
*
stats
,
int
is_bare
)
{
int
retcode
=
GIT_ERROR
;
git_repository
*
repo
=
NULL
;
if
(
!
path_is_okay
(
path
))
{
return
GIT_ERROR
;
}
if
(
!
(
retcode
=
git_repository_init
(
&
repo
,
path
,
is_bare
)))
{
if
((
retcode
=
setup_remotes_and_fetch
(
repo
,
origin_url
,
stats
))
<
0
)
{
/* Failed to fetch; clean up */
git_repository_free
(
repo
);
git_futils_rmdir_r
(
path
,
GIT_DIRREMOVAL_FILES_AND_DIRS
);
}
else
{
*
out
=
repo
;
retcode
=
0
;
}
}
return
retcode
;
int
retcode
=
GIT_ERROR
;
git_repository
*
repo
=
NULL
;
if
(
!
path_is_okay
(
path
))
{
return
GIT_ERROR
;
}
if
(
!
(
retcode
=
git_repository_init
(
&
repo
,
path
,
is_bare
)))
{
if
((
retcode
=
setup_remotes_and_fetch
(
repo
,
origin_url
,
stats
))
<
0
)
{
/* Failed to fetch; clean up */
git_repository_free
(
repo
);
git_futils_rmdir_r
(
path
,
GIT_DIRREMOVAL_FILES_AND_DIRS
);
}
else
{
*
out
=
repo
;
retcode
=
0
;
}
}
return
retcode
;
}
int
git_clone_bare
(
git_repository
**
out
,
const
char
*
origin_url
,
const
char
*
dest_path
,
git_indexer_stats
*
stats
)
const
char
*
origin_url
,
const
char
*
dest_path
,
git_indexer_stats
*
stats
)
{
assert
(
out
&&
origin_url
&&
dest_path
);
return
clone_internal
(
out
,
origin_url
,
dest_path
,
stats
,
1
);
assert
(
out
&&
origin_url
&&
dest_path
);
return
clone_internal
(
out
,
origin_url
,
dest_path
,
stats
,
1
);
}
int
git_clone
(
git_repository
**
out
,
const
char
*
origin_url
,
const
char
*
workdir_path
,
git_indexer_stats
*
stats
)
const
char
*
origin_url
,
const
char
*
workdir_path
,
git_indexer_stats
*
stats
)
{
int
retcode
=
GIT_ERROR
;
int
retcode
=
GIT_ERROR
;
assert
(
out
&&
origin_url
&&
workdir_path
);
assert
(
out
&&
origin_url
&&
workdir_path
);
if
(
!
(
retcode
=
clone_internal
(
out
,
origin_url
,
workdir_path
,
stats
,
0
)))
{
git_indexer_stats
checkout_stats
;
retcode
=
git_checkout_force
(
*
out
,
&
checkout_stats
);
}
if
(
!
(
retcode
=
clone_internal
(
out
,
origin_url
,
workdir_path
,
stats
,
0
)))
{
git_indexer_stats
checkout_stats
;
retcode
=
git_checkout_force
(
*
out
,
&
checkout_stats
);
}
return
retcode
;
return
retcode
;
}
...
...
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