~bzr-pqm/bzr/bzr.dev

#! /usr/bin/python

# Copyright (C) 2005 Canonical Ltd

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Experiment in converting existing bzr branches to weaves."""

import bzrlib.branch

from bzrlib.weave import Weave

from bzrlib.weavefile import write_weave

from bzrlib.progress import ProgressBar

import tempfile

import hotshot, hotshot.stats

import sys

def convert():

    WEAVE_NAME = "inventory.weave"

    pb = ProgressBar()

    wf = Weave()

    b = bzrlib.branch.find_branch('.')

    parents = set()

    revno = 1

    rev_history = b.revision_history()

    for rev_id in rev_history:

        pb.update('converting inventory', revno, len(rev_history))

        inv_xml = b.inventory_store[rev_id].readlines()

        weave_id = wf.add(parents, inv_xml)

        parents = set([weave_id])       # always just one parent

        revno += 1

    pb.update('write weave', None, None)

    write_weave(wf, file(WEAVE_NAME, 'wb'))

    pb.clear()

def profile_convert(): 

    prof_f = tempfile.NamedTemporaryFile()

    prof = hotshot.Profile(prof_f.name)

    prof.runcall(convert) 

    prof.close()

    stats = hotshot.stats.load(prof_f.name)

    #stats.strip_dirs()

    stats.sort_stats('time')

    ## XXX: Might like to write to stderr or the trace file instead but

    ## print_stats seems hardcoded to stdout

    stats.print_stats(20)

if '-p' in sys.argv[1:]:

    profile_convert()

else:

    convert()