~launchpad-pqm/launchpad/devel

# Copyright 2009-2010 Canonical Ltd.  This software is licensed under the

# GNU Affero General Public License version 3 (see the file LICENSE).

"""Give access to bzr and other version info, if available.

The bzr version info file is expected to be in the Launchpad root in the

file bzr-version-info.py.

From this module, you can get:

  versioninfo: the version_info dict

  revno: the revision number

  date: the date of the last revision

  branch_nick: the branch nickname

If the bzr-version-info.py file does not exist, then revno, date and

branch_nick will all be None.

If that file exists, and contains valid Python, revno, date and branch_nick

will have appropriate values from version_info.

If that file exists, and contains invalid Python, there will be an error when

this module is loaded.  This module is imported into lp/app/__init__.py so

that such errors are caught at start-up.

"""

__all__ = [

    'branch_nick',

    'date',

    'revno',

    'versioninfo',

    ]

def read_version_info():

    try:

        import launchpadversioninfo

    except ImportError:

        return None

    else:

        return getattr(launchpadversioninfo, 'version_info', None)

versioninfo = read_version_info()

if versioninfo is None:

    revno = None

    date = None

    branch_nick = None

else:

    revno = versioninfo.get('revno')

    date = versioninfo.get('date')

    branch_nick = versioninfo.get('branch_nick')