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# Copyright (C) 2005 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""Experiment in converting existing bzr branches to weaves."""
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from bzrlib.revfile import Revfile
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from bzrlib.weave import Weave
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from bzrlib.weavefile import read_weave, write_weave
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from bzrlib.progress import ProgressBar
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from bzrlib.atomicfile import AtomicFile
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import hotshot, hotshot.stats
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# holds in-memory weaves for all files
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b = bzrlib.branch.find_branch('.')
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rev_history = b.revision_history()
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for rev_id in rev_history:
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pb.update('converting revision', revno, len(rev_history))
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inv_xml = b.get_inventory_xml(rev_id).readlines()
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new_idx = inv_weave.add(rev_id, inv_parents, inv_xml)
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inv_parents = [new_idx]
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tree = b.revision_tree(rev_id)
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# for each file in the inventory, put it into its own revfile
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if last_text_sha.get(file_id) == ie.text_sha1:
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last_text_sha[file_id] = ie.text_sha1
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# new text (though possibly already stored); need to store it
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text_lines = tree.get_file(file_id).readlines()
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# if the file's created for the first time in this
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# revision then make a new weave; else find the old one
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if file_id not in text_weaves:
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text_weaves[file_id] = Weave()
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w = text_weaves[file_id]
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# base the new text version off whatever was last
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# (actually it'd be better to track this, to allow for
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# files that are deleted and then reappear)
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w.add(rev_id, parents, text_lines)
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print '%6d revisions and inventories' % revno
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print '%6d texts' % text_count
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# TODO: commit them all atomically at the end, not one by one
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write_atomic_weave(inv_weave, 'weaves/inventory.weave')
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for file_id, file_weave in text_weaves.items():
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pb.update('writing weave', i, len(text_weaves))
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write_atomic_weave(file_weave, 'weaves/%s.weave' % file_id)
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def write_atomic_weave(weave, filename):
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inv_wf = AtomicFile(filename)
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write_weave(weave, inv_wf)
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def profile_convert():
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prof_f = tempfile.NamedTemporaryFile()
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prof = hotshot.Profile(prof_f.name)
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prof.runcall(convert)
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stats = hotshot.stats.load(prof_f.name)
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stats.sort_stats('time')
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## XXX: Might like to write to stderr or the trace file instead but
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## print_stats seems hardcoded to stdout
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stats.print_stats(20)
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if '-p' in sys.argv[1:]: