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# Copyright (C) 2015 Mozilla Contributors
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# As a special exception, the copyright holders of this code give you
# permission to combine this code with the software known as 'mozbuild',
# and to distribute those combinations without any restriction
# coming from the use of this file. (The General Public License
# restrictions do apply in other respects; for example, they cover
# modification of the file, and distribution when not combined with
# mozbuild.)
#
# If you modify this code, you may extend this exception to your
# version of the code, but you are not obliged to do so. If you
# do not wish to do so, delete this exception statement from your
# version.
from __future__ import absolute_import
import mercurial.error as error
import mercurial.hg as hg
import mercurial.ui as hgui
from .files import (
BaseFinder,
MercurialFile,
)
import mozpack.path as mozpath
# This isn't a complete implementation of BaseFile. But it is complete
# enough for moz.build reading.
class MercurialNativeFile(MercurialFile):
def __init__(self, data):
self.data = data
def read(self):
return self.data
class MercurialNativeRevisionFinder(BaseFinder):
def __init__(self, repo, rev='.', recognize_repo_paths=False):
"""Create a finder attached to a specific changeset.
Accepts a Mercurial localrepo and changectx instance.
"""
if isinstance(repo, (str, unicode)):
path = repo
repo = hg.repository(hgui.ui(), repo)
else:
path = repo.root
super(MercurialNativeRevisionFinder, self).__init__(base=repo.root)
self._repo = repo
self._rev = rev
self._root = mozpath.normpath(path)
self._recognize_repo_paths = recognize_repo_paths
def _find(self, pattern):
if self._recognize_repo_paths:
raise NotImplementedError('cannot use find with recognize_repo_path')
return self._find_helper(pattern, self._repo[self._rev], self._get)
def get(self, path):
if self._recognize_repo_paths:
if not path.startswith(self._root):
raise ValueError('lookups in recognize_repo_paths mode must be '
'prefixed with repo path: %s' % path)
path = path[len(self._root) + 1:]
return self._get(path)
def _get(self, path):
if isinstance(path, unicode):
path = path.encode('utf-8', 'replace')
try:
fctx = self._repo.filectx(path, self._rev)
return MercurialNativeFile(fctx.data())
except error.LookupError:
return None
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