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"""Python implementations of Dirstate Helper functions."""
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from __future__ import absolute_import
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# We cannot import the dirstate module, because it loads this module
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# All we really need is the IN_MEMORY_MODIFIED constant
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from bzrlib import errors
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from bzrlib.dirstate import DirState
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from breezy import errors
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from .dirstate import DirState
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def pack_stat(st, _b64=binascii.b2a_base64, _pack=struct.Struct('>6L').pack):
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"""Convert stat values into a packed representation
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Not all of the fields from the stat included are strictly needed, and by
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just encoding the mtime and mode a slight speed increase could be gained.
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However, using the pyrex version instead is a bigger win.
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# base64 encoding always adds a final newline, so strip it off
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return _b64(_pack(st.st_size & 0xFFFFFFFF, int(st.st_mtime) & 0xFFFFFFFF,
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int(st.st_ctime) & 0xFFFFFFFF, st.st_dev & 0xFFFFFFFF,
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st.st_ino & 0xFFFFFFFF, st.st_mode))[:-1]
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def _unpack_stat(packed_stat):
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"""Turn a packed_stat back into the stat fields.
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This is meant as a debugging tool, should not be used in real code.
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(st_size, st_mtime, st_ctime, st_dev, st_ino,
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st_mode) = struct.unpack('>6L', binascii.a2b_base64(packed_stat))
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return dict(st_size=st_size, st_mtime=st_mtime, st_ctime=st_ctime,
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st_dev=st_dev, st_ino=st_ino, st_mode=st_mode)
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def _bisect_path_left(paths, path):
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# them. Grab an straight iterator over the fields. (We use an
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# iterator because we don't want to do a lot of additions, nor
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# do we want to do a lot of slicing)
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next = iter(fields).next
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# Get a local reference to the compatible next method
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next = getattr(_iter, '__next__', None)
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# Move the iterator to the current position
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for x in xrange(cur):
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# The two blocks here are deliberate: the root block and the
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# contents-of-root block.
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fields_to_entry = state._get_fields_to_entry()
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entries = [fields_to_entry(fields[pos:pos+entry_size])
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for pos in xrange(cur, field_count, entry_size)]
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for pos in range(cur, field_count, entry_size)]
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state._entries_to_current_state(entries)
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# To convert from format 2 => format 3
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# state._dirblocks = sorted(state._dirblocks,