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bzrlib/cmd_version_info.py
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# Copyright (C) 2005, 2006 Canonical Ltd
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#
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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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#
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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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#
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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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"""Commands for generating snapshot information about a bzr tree."""
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from bzrlib import (
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    branch,
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    errors,
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    version_info_formats,
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    workingtree,
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    )
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""")
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from bzrlib.commands import Command
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from bzrlib.option import Option
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def _parse_version_info_format(format):
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    """Convert a string passed by the user into a VersionInfoFormat.
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    This looks in the version info format registry, and if the format
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    cannot be found, generates a useful error exception.
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    """
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    try:
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        return version_info_formats.get_builder(format)
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    except KeyError:
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        formats = version_info_formats.get_builder_formats()
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        raise errors.BzrCommandError('No known version info format %s.'
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                                     ' Supported types are: %s'
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                                     % (format, formats))
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class cmd_version_info(Command):
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    """Show version information about this tree."""
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    takes_options = [Option('format', type=_parse_version_info_format,
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                            help='Select the output format.'),
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                     Option('all', help='Include all possible information.'),
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                     Option('check-clean', help='Check if tree is clean.'),
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                     Option('include-history',
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                            help='Include the revision-history.'),
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                     Option('include-file-revisions',
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                            help='Include the last revision for each file.')
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                     ]
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    takes_args = ['location?']
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    encoding_type = 'exact'
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    def run(self, location=None, format=None,
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            all=False, check_clean=False, include_history=False,
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            include_file_revisions=False):
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        if location is None:
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            location = '.'
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        if format is None:
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            format = version_info_formats.get_builder(None)
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        wt = None
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        try:
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            wt = workingtree.WorkingTree.open_containing(location)[0]
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        except errors.NoWorkingTree:
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            b = branch.Branch.open(location)
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        else:
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            b = wt.branch
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        if all:
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            include_history = True
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            check_clean = True
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            include_file_revisions=True
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        builder = format(b, working_tree=wt,
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                check_for_clean=check_clean,
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                include_revision_history=include_history,
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                include_file_revisions=include_file_revisions)
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        builder.generate(self.outf)