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#!/usr/bin/env python2.4
import sys
from bzrlib.workingtree import WorkingTree
from multiparent import MultiParent
single_parent = False
if len(sys.argv) > 1 and len(sys.argv) < 4:
wt, path = WorkingTree.open_containing(sys.argv[-1])
if len(sys.argv) == 3:
assert sys.argv[1] == '--single'
single_parent = True
else:
print >> sys.stderr, 'Usage: mpknit [--single] FILENAME'
sys.exit(3)
bt = wt.basis_tree()
file_id = wt.path2id(path)
file_weave = bt.get_weave(file_id)
for revision in file_weave.get_ancestry([bt.inventory[file_id].revision]):
parents = file_weave.get_parents(revision)
if single_parent:
parents = parents[0:1]
texts = file_weave.get_texts([revision] + parents)
print revision
patch_iter = MultiParent.from_texts(texts[0], texts[1:]).to_patch()
sys.stdout.writelines(patch_iter)
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