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GitPython/git/index/typ.py at master · githubdelegate/GitPython · GitHub
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index
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"""Module with additional types used by the index"""
from
binascii
import
b2a_hex
from
.
util
import
(
pack
,
unpack
)
from
git
.
objects
import
Blob
__all__
=
(
'BlobFilter'
,
'BaseIndexEntry'
,
'IndexEntry'
)
#{ Invariants
CE_NAMEMASK
=
0x0fff
CE_STAGEMASK
=
0x3000
CE_EXTENDED
=
0x4000
CE_VALID
=
0x8000
CE_STAGESHIFT
=
12
#} END invariants
class
BlobFilter
(
object
):
"""
Predicate to be used by iter_blobs allowing to filter only return blobs which
match the given list of directories or files.
The given paths are given relative to the repository.
"""
__slots__
=
'paths'
def
__init__
(
self
,
paths
):
"""
:param paths:
tuple or list of paths which are either pointing to directories or
to files relative to the current repository
"""
self
.
paths
=
paths
def
__call__
(
self
,
stage_blob
):
path
=
stage_blob
[
1
].
path
for
p
in
self
.
paths
:
if
path
.
startswith
(
p
):
return
True
# END for each path in filter paths
return
False
class
BaseIndexEntry
(
tuple
):
"""Small Brother of an index entry which can be created to describe changes
done to the index in which case plenty of additional information is not requried.
As the first 4 data members match exactly to the IndexEntry type, methods
expecting a BaseIndexEntry can also handle full IndexEntries even if they
use numeric indices for performance reasons. """
def
__str__
(
self
):
return
"%o %s %i
\t
%s"
%
(
self
.
mode
,
self
.
hexsha
,
self
.
stage
,
self
.
path
)
def
__repr__
(
self
):
return
"(%o, %s, %i, %s)"
%
(
self
.
mode
,
self
.
hexsha
,
self
.
stage
,
self
.
path
)
@
property
def
mode
(
self
):
""" File Mode, compatible to stat module constants """
return
self
[
0
]
@
property
def
binsha
(
self
):
"""binary sha of the blob """
return
self
[
1
]
@
property
def
hexsha
(
self
):
"""hex version of our sha"""
return
b2a_hex
(
self
[
1
]).
decode
(
'ascii'
)
@
property
def
stage
(
self
):
"""Stage of the entry, either:
* 0 = default stage
* 1 = stage before a merge or common ancestor entry in case of a 3 way merge
* 2 = stage of entries from the 'left' side of the merge
* 3 = stage of entries from the right side of the merge
:note: For more information, see http://www.kernel.org/pub/software/scm/git/docs/git-read-tree.html
"""
return
(
self
[
2
]
&
CE_STAGEMASK
)
>>
CE_STAGESHIFT
@
property
def
path
(
self
):
""":return: our path relative to the repository working tree root"""
return
self
[
3
]
@
property
def
flags
(
self
):
""":return: flags stored with this entry"""
return
self
[
2
]
@
classmethod
def
from_blob
(
cls
,
blob
,
stage
=
0
):
""":return: Fully equipped BaseIndexEntry at the given stage"""
return
cls
((
blob
.
mode
,
blob
.
binsha
,
stage
<<
CE_STAGESHIFT
,
blob
.
path
))
def
to_blob
(
self
,
repo
):
""":return: Blob using the information of this index entry"""
return
Blob
(
repo
,
self
.
binsha
,
self
.
mode
,
self
.
path
)
class
IndexEntry
(
BaseIndexEntry
):
"""Allows convenient access to IndexEntry data without completely unpacking it.
Attributes usully accessed often are cached in the tuple whereas others are
unpacked on demand.
See the properties for a mapping between names and tuple indices. """
@
property
def
ctime
(
self
):
"""
:return:
Tuple(int_time_seconds_since_epoch, int_nano_seconds) of the
file's creation time"""
return
unpack
(
">LL"
,
self
[
4
])
@
property
def
mtime
(
self
):
"""See ctime property, but returns modification time """
return
unpack
(
">LL"
,
self
[
5
])
@
property
def
dev
(
self
):
""" Device ID """
return
self
[
6
]
@
property
def
inode
(
self
):
""" Inode ID """
return
self
[
7
]
@
property
def
uid
(
self
):
""" User ID """
return
self
[
8
]
@
property
def
gid
(
self
):
""" Group ID """
return
self
[
9
]
@
property
def
size
(
self
):
""":return: Uncompressed size of the blob """
return
self
[
10
]
@
classmethod
def
from_base
(
cls
,
base
):
"""
:return:
Minimal entry as created from the given BaseIndexEntry instance.
Missing values will be set to null-like values
:param base: Instance of type BaseIndexEntry"""
time
=
pack
(
">LL"
,
0
,
0
)
return
IndexEntry
((
base
.
mode
,
base
.
binsha
,
base
.
flags
,
base
.
path
,
time
,
time
,
0
,
0
,
0
,
0
,
0
))
@
classmethod
def
from_blob
(
cls
,
blob
,
stage
=
0
):
""":return: Minimal entry resembling the given blob object"""
time
=
pack
(
">LL"
,
0
,
0
)
return
IndexEntry
((
blob
.
mode
,
blob
.
binsha
,
stage
<<
CE_STAGESHIFT
,
blob
.
path
,
time
,
time
,
0
,
0
,
0
,
0
,
blob
.
size
))
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