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96 lines
3.3 KiB
Python
96 lines
3.3 KiB
Python
# Copyright (C) 2015 Mozilla Contributors
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (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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#
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# As a special exception, the copyright holders of this code give you
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# permission to combine this code with the software known as 'mozbuild',
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# and to distribute those combinations without any restriction
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# coming from the use of this file. (The General Public License
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# restrictions do apply in other respects; for example, they cover
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# modification of the file, and distribution when not combined with
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# mozbuild.)
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#
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# If you modify this code, you may extend this exception to your
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# version of the code, but you are not obliged to do so. If you
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# do not wish to do so, delete this exception statement from your
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# version.
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from __future__ import absolute_import
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import mercurial.error as error
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import mercurial.hg as hg
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import mercurial.ui as hgui
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from .files import (
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BaseFinder,
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MercurialFile,
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)
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import mozpack.path as mozpath
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# This isn't a complete implementation of BaseFile. But it is complete
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# enough for moz.build reading.
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class MercurialNativeFile(MercurialFile):
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def __init__(self, data):
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self.data = data
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def read(self):
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return self.data
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class MercurialNativeRevisionFinder(BaseFinder):
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def __init__(self, repo, rev='.', recognize_repo_paths=False):
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"""Create a finder attached to a specific changeset.
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Accepts a Mercurial localrepo and changectx instance.
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"""
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if isinstance(repo, (str, unicode)):
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path = repo
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repo = hg.repository(hgui.ui(), repo)
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else:
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path = repo.root
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super(MercurialNativeRevisionFinder, self).__init__(base=repo.root)
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self._repo = repo
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self._rev = rev
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self._root = mozpath.normpath(path)
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self._recognize_repo_paths = recognize_repo_paths
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def _find(self, pattern):
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if self._recognize_repo_paths:
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raise NotImplementedError('cannot use find with recognize_repo_path')
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return self._find_helper(pattern, self._repo[self._rev], self._get)
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def get(self, path):
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if self._recognize_repo_paths:
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if not path.startswith(self._root):
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raise ValueError('lookups in recognize_repo_paths mode must be '
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'prefixed with repo path: %s' % path)
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path = path[len(self._root) + 1:]
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return self._get(path)
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def _get(self, path):
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if isinstance(path, unicode):
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path = path.encode('utf-8', 'replace')
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try:
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fctx = self._repo.filectx(path, self._rev)
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return MercurialNativeFile(fctx.data())
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except error.LookupError:
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return None
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