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Viewing changes to bzrlib/cmd_version_info.py

  • Committer: Martin Pool
  • Date: 2010-04-01 04:41:18 UTC
  • mto: This revision was merged to the branch mainline in revision 5128.
  • Revision ID: mbp@sourcefrog.net-20100401044118-shyctqc02ob08ngz
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bzrlib/cmd_version_info.py
 
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# Copyright (C) 2005-2010 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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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    ui,
 
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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, RegistryOption
 
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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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    You can use this command to add information about version into
 
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    source code of an application. The output can be in one of the
 
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    supported formats or in a custom format based on a template.
 
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    For example::
 
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      bzr version-info --custom \\
 
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        --template="#define VERSION_INFO \\"Project 1.2.3 (r{revno})\\"\\n"
 
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    will produce a C header file with formatted string containing the
 
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    current revision number. Other supported variables in templates are:
 
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      * {date} - date of the last revision
 
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      * {build_date} - current date
 
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      * {revno} - revision number
 
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      * {revision_id} - revision id
 
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      * {branch_nick} - branch nickname
 
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      * {clean} - 0 if the source tree contains uncommitted changes,
 
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                  otherwise 1
 
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    """
 
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    takes_options = [RegistryOption('format',
 
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                            'Select the output format.',
 
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                            value_switches=True,
 
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                            lazy_registry=('bzrlib.version_info_formats',
 
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                                           'format_registry')),
 
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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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                     Option('template', type=str, help='Template for the output.'),
 
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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, template=None):
 
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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.format_registry.get()
 
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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 or template:
 
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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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                template=template)
 
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        builder.generate(ui.ui_factory.make_output_stream())