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Viewing changes to breezy/archive/__init__.py

  • Committer: Breezy landing bot
  • Author(s): Colin Watson
  • Date: 2020-11-16 21:47:08 UTC
  • mfrom: (7521.1.1 remove-lp-workaround)
  • Revision ID: breezy.the.bot@gmail.com-20201116214708-jos209mgxi41oy15
Remove breezy.git workaround for bazaar.launchpad.net.

Merged from https://code.launchpad.net/~cjwatson/brz/remove-lp-workaround/+merge/393710

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breezy/archive/__init__.py
 
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# Copyright (C) 2018 Breezy Developers
 
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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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"""Export trees to tarballs, zipfiles, etc.
 
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"""
 
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import os
 
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import time
 
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import warnings
 
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from .. import (
 
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    errors,
 
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    pyutils,
 
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    registry,
 
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    trace,
 
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    )
 
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class ArchiveFormatInfo(object):
 
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    def __init__(self, extensions):
 
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        self.extensions = extensions
 
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class ArchiveFormatRegistry(registry.Registry):
 
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    """Registry of archive formats."""
 
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    def __init__(self):
 
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        self._extension_map = {}
 
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        super(ArchiveFormatRegistry, self).__init__()
 
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    @property
 
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    def extensions(self):
 
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        return self._extension_map.keys()
 
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    def register(self, key, factory, extensions, help=None):
 
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        """Register an archive format.
 
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        """
 
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        registry.Registry.register(self, key, factory, help,
 
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                                   ArchiveFormatInfo(extensions))
 
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        self._register_extensions(key, extensions)
 
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    def register_lazy(self, key, module_name, member_name, extensions,
 
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                      help=None):
 
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        registry.Registry.register_lazy(self, key, module_name, member_name,
 
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                                        help, ArchiveFormatInfo(extensions))
 
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        self._register_extensions(key, extensions)
 
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    def _register_extensions(self, name, extensions):
 
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        for ext in extensions:
 
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            self._extension_map[ext] = name
 
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    def get_format_from_filename(self, filename):
 
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        """Determine the archive format from an extension.
 
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        :param filename: Filename to guess from
 
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        :return: A format name, or None
 
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        """
 
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        for ext, format in self._extension_map.items():
 
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            if filename.endswith(ext):
 
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                return format
 
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        else:
 
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            return None
 
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def create_archive(format, tree, name, root=None, subdir=None,
 
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                   force_mtime=None):
 
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    try:
 
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        archive_fn = format_registry.get(format)
 
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    except KeyError:
 
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        raise errors.NoSuchExportFormat(format)
 
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    return archive_fn(tree, name, root=root, subdir=subdir,
 
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                      force_mtime=force_mtime)
 
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format_registry = ArchiveFormatRegistry()
 
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format_registry.register_lazy('tar', 'breezy.archive.tar',
 
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                              'plain_tar_generator', ['.tar'], )
 
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format_registry.register_lazy('tgz', 'breezy.archive.tar',
 
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                              'tgz_generator', ['.tar.gz', '.tgz'])
 
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format_registry.register_lazy('tbz2', 'breezy.archive.tar',
 
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                              'tbz_generator', ['.tar.bz2', '.tbz2'])
 
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format_registry.register_lazy('tlzma', 'breezy.archive.tar',
 
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                              'tar_lzma_generator', ['.tar.lzma'])
 
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format_registry.register_lazy('txz', 'breezy.archive.tar',
 
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                              'tar_xz_generator', ['.tar.xz'])
 
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format_registry.register_lazy('zip', 'breezy.archive.zip',
 
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                              'zip_archive_generator', ['.zip'])