/brz/remove-bazaar

# Copyright (C) 2006-2007 Jelmer Vernooij <jelmer@samba.org>

#               2007 David Allouche <ddaa@ddaa.net>

# 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

"""Git cache directory access."""

# Shamelessly copied from bzr-svn.

import os

import bzrlib

from bzrlib.config import config_dir, ensure_config_dir_exists

from bzrlib.trace import warning

def create_cache_dir():

    """Create the top-level bzr-git cache directory.

    :return: Path to cache directory.

    """

    ensure_config_dir_exists()

    cache_dir = os.path.join(config_dir(), 'git-cache')

    if not os.path.exists(cache_dir):

        os.mkdir(cache_dir)

        open(os.path.join(cache_dir, "README"), 'w').write(

"""This directory contains information cached by the bzr-git plugin.

It is used for performance reasons only and can be removed

without losing data.

""")

    return cache_dir

def check_pysqlite_version(sqlite3):

    """Check that sqlite library is compatible.

    """

    if (sqlite3.sqlite_version_info[0] < 3 or 

            (sqlite3.sqlite_version_info[0] == 3 and 

             sqlite3.sqlite_version_info[1] < 3)):

        warning('Needs at least sqlite 3.3.x')

        raise bzrlib.errors.BzrError("incompatible sqlite library")

try:

    try:

        import sqlite3

        check_pysqlite_version(sqlite3)

    except (ImportError, bzrlib.errors.BzrError), e: 

        from pysqlite2 import dbapi2 as sqlite3

        check_pysqlite_version(sqlite3)

except:

    warning('Needs at least Python2.5 or Python2.4 with the pysqlite2 '

            'module')

    raise bzrlib.errors.BzrError("missing sqlite library")