17
17
"""Python implementations of Dirstate Helper functions."""
19
from __future__ import absolute_import
21
25
# We cannot import the dirstate module, because it loads this module
22
26
# All we really need is the IN_MEMORY_MODIFIED constant
23
from bzrlib import errors
24
from bzrlib.dirstate import DirState
27
from breezy import errors
28
from .dirstate import DirState
31
def pack_stat(st, _b64=binascii.b2a_base64, _pack=struct.Struct('>6L').pack):
32
"""Convert stat values into a packed representation
34
Not all of the fields from the stat included are strictly needed, and by
35
just encoding the mtime and mode a slight speed increase could be gained.
36
However, using the pyrex version instead is a bigger win.
38
# base64 encoding always adds a final newline, so strip it off
39
return _b64(_pack(st.st_size & 0xFFFFFFFF, int(st.st_mtime) & 0xFFFFFFFF,
40
int(st.st_ctime) & 0xFFFFFFFF, st.st_dev & 0xFFFFFFFF,
41
st.st_ino & 0xFFFFFFFF, st.st_mode))[:-1]
44
def _unpack_stat(packed_stat):
45
"""Turn a packed_stat back into the stat fields.
47
This is meant as a debugging tool, should not be used in real code.
49
(st_size, st_mtime, st_ctime, st_dev, st_ino,
50
st_mode) = struct.unpack('>6L', binascii.a2b_base64(packed_stat))
51
return dict(st_size=st_size, st_mtime=st_mtime, st_ctime=st_ctime,
52
st_dev=st_dev, st_ino=st_ino, st_mode=st_mode)
27
55
def _bisect_path_left(paths, path):
234
262
# them. Grab an straight iterator over the fields. (We use an
235
263
# iterator because we don't want to do a lot of additions, nor
236
264
# do we want to do a lot of slicing)
237
next = iter(fields).next
266
# Get a local reference to the compatible next method
267
next = getattr(_iter, '__next__', None)
238
270
# Move the iterator to the current position
239
271
for x in xrange(cur):