annotate hgext/largefiles/localstore.py @ 43085:eef9a2d67051

py3: manually import pycompat.open into files that need it We want to eliminate the source transformer. Currently it inserts a `from mercurial.pycompat import ...` at the top of files to alias some builtins. This commit replaces the implicit import of `open` with an explicit import on files that need it and changes the source transformer to no longer import `open`. As part of this, we needed to store an explicit local for `open` in the Python 2 code path in `pycompat` so the import works. (Builtins that are automatically in scope cannot be imported.) Differential Revision: https://phab.mercurial-scm.org/D7005
author Gregory Szorc <gregory.szorc@gmail.com>
date Sun, 06 Oct 2019 13:28:56 -0400
parents 687b865b95ad
children 89a2afe31e82
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1 # Copyright 2009-2010 Gregory P. Ward
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2 # Copyright 2009-2010 Intelerad Medical Systems Incorporated
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3 # Copyright 2010-2011 Fog Creek Software
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4 # Copyright 2010-2011 Unity Technologies
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2 or any later version.
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8
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9 '''store class for local filesystem'''
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10 from __future__ import absolute_import
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11
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12 from mercurial.i18n import _
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13 from mercurial.pycompat import open
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14 from mercurial import util
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15
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16 from . import (
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17 basestore,
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18 lfutil,
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19 )
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20
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21
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22 class localstore(basestore.basestore):
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23 '''localstore first attempts to grab files out of the store in the remote
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24 Mercurial repository. Failing that, it attempts to grab the files from
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25 the user cache.'''
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26
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27 def __init__(self, ui, repo, remote):
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28 self.remote = remote.local()
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29 super(localstore, self).__init__(ui, repo, self.remote.url())
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30
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31 def put(self, source, hash):
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32 if lfutil.instore(self.remote, hash):
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33 return
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34 lfutil.link(source, lfutil.storepath(self.remote, hash))
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35
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36 def exists(self, hashes):
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37 retval = {}
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38 for hash in hashes:
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39 retval[hash] = lfutil.instore(self.remote, hash)
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40 return retval
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41
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42 def _getfile(self, tmpfile, filename, hash):
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43 path = lfutil.findfile(self.remote, hash)
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44 if not path:
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45 raise basestore.StoreError(
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46 filename, hash, self.url, _(b"can't get file locally")
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47 )
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48 with open(path, b'rb') as fd:
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49 return lfutil.copyandhash(util.filechunkiter(fd), tmpfile)
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50
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51 def _verifyfiles(self, contents, filestocheck):
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52 failed = False
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53 for cset, filename, expectedhash in filestocheck:
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54 storepath, exists = lfutil.findstorepath(self.repo, expectedhash)
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55 if not exists:
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56 storepath, exists = lfutil.findstorepath(
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57 self.remote, expectedhash
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58 )
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59 if not exists:
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60 self.ui.warn(
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61 _(b'changeset %s: %s references missing %s\n')
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62 % (cset, filename, storepath)
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63 )
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64 failed = True
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65 elif contents:
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66 actualhash = lfutil.hashfile(storepath)
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67 if actualhash != expectedhash:
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68 self.ui.warn(
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69 _(b'changeset %s: %s references corrupted %s\n')
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70 % (cset, filename, storepath)
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71 )
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72 failed = True
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73 return failed