view hgext/largefiles/localstore.py @ 29929:b3845cab4ddc

revset: wrap arguments of 'or' by 'list' node

This makes the number of 'or' arguments deterministic so we can attach
additional ordering flag to all operator nodes. See the next patch.

We rewrite the tree immediately after chained 'or' operations are flattened
by simplifyinfixops(), so we don't need to care if arguments are stored in
x[1] or x[1:].

# Copyright 2009-2010 Gregory P. Ward
# Copyright 2009-2010 Intelerad Medical Systems Incorporated
# Copyright 2010-2011 Fog Creek Software
# Copyright 2010-2011 Unity Technologies
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

'''store class for local filesystem'''
from __future__ import absolute_import

from mercurial.i18n import _

from . import (
    basestore,
    lfutil,
)

class localstore(basestore.basestore):
    '''localstore first attempts to grab files out of the store in the remote
    Mercurial repository.  Failing that, it attempts to grab the files from
    the user cache.'''

    def __init__(self, ui, repo, remote):
        self.remote = remote.local()
        super(localstore, self).__init__(ui, repo, self.remote.url())

    def put(self, source, hash):
        if lfutil.instore(self.remote, hash):
            return
        lfutil.link(source, lfutil.storepath(self.remote, hash))

    def exists(self, hashes):
        retval = {}
        for hash in hashes:
            retval[hash] = lfutil.instore(self.remote, hash)
        return retval

    def _getfile(self, tmpfile, filename, hash):
        path = lfutil.findfile(self.remote, hash)
        if not path:
            raise basestore.StoreError(filename, hash, self.url,
                _("can't get file locally"))
        with open(path, 'rb') as fd:
            return lfutil.copyandhash(fd, tmpfile)

    def _verifyfiles(self, contents, filestocheck):
        failed = False
        for cset, filename, expectedhash in filestocheck:
            storepath, exists = lfutil.findstorepath(self.repo, expectedhash)
            if not exists:
                storepath, exists = lfutil.findstorepath(
                    self.remote, expectedhash)
            if not exists:
                self.ui.warn(
                    _('changeset %s: %s references missing %s\n')
                    % (cset, filename, storepath))
                failed = True
            elif contents:
                actualhash = lfutil.hashfile(storepath)
                if actualhash != expectedhash:
                    self.ui.warn(
                        _('changeset %s: %s references corrupted %s\n')
                        % (cset, filename, storepath))
                    failed = True
        return failed