mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-24 11:58:10 +01:00
1218 lines
41 KiB
Python
1218 lines
41 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (c) 2011-2014 David Bremner <david@tethera.net>
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# W. Trevor King <wking@tremily.us>
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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 3 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, see https://www.gnu.org/licenses/ .
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"""
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Manage notmuch tags with Git
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"""
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from __future__ import print_function
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from __future__ import unicode_literals
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import codecs as _codecs
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import collections as _collections
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import functools as _functools
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import inspect as _inspect
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import locale as _locale
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import logging as _logging
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import os as _os
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import re as _re
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import shutil as _shutil
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import subprocess as _subprocess
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import sys as _sys
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import tempfile as _tempfile
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import textwrap as _textwrap
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from urllib.parse import quote as _quote
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from urllib.parse import unquote as _unquote
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import json as _json
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_LOG = _logging.getLogger('notmuch-git')
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_LOG.setLevel(_logging.WARNING)
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_LOG.addHandler(_logging.StreamHandler())
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NOTMUCH_GIT_DIR = None
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TAG_PREFIX = None
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FORMAT_VERSION = 1
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_HEX_ESCAPE_REGEX = _re.compile('%[0-9A-F]{2}')
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_TAG_DIRECTORY = 'tags/'
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_TAG_FILE_REGEX = ( _re.compile(_TAG_DIRECTORY + '(?P<id>[^/]*)/(?P<tag>[^/]*)'),
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_re.compile(_TAG_DIRECTORY + '([0-9a-f]{2}/){2}(?P<id>[^/]*)/(?P<tag>[^/]*)'))
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# magic hash for Git (git hash-object -t blob /dev/null)
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_EMPTYBLOB = 'e69de29bb2d1d6434b8b29ae775ad8c2e48c5391'
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def _hex_quote(string, safe='+@=:,'):
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"""
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quote('abc def') -> 'abc%20def'.
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Wrap urllib.parse.quote with additional safe characters (in
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addition to letters, digits, and '_.-') and lowercase hex digits
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(e.g. '%3a' instead of '%3A').
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"""
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uppercase_escapes = _quote(string, safe)
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return _HEX_ESCAPE_REGEX.sub(
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lambda match: match.group(0).lower(),
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uppercase_escapes)
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def _xapian_quote(string):
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"""
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Quote a string for Xapian's QueryParser.
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Xapian uses double-quotes for quoting strings. You can escape
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internal quotes by repeating them [1,2,3].
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[1]: https://trac.xapian.org/ticket/128#comment:2
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[2]: https://trac.xapian.org/ticket/128#comment:17
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[3]: https://trac.xapian.org/changeset/13823/svn
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"""
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return '"{0}"'.format(string.replace('"', '""'))
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def _xapian_unquote(string):
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"""
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Unquote a Xapian-quoted string.
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"""
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if string.startswith('"') and string.endswith('"'):
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return string[1:-1].replace('""', '"')
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return string
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def timed(fn):
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"""Timer decorator"""
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from time import perf_counter
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def inner(*args, **kwargs):
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start_time = perf_counter()
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rval = fn(*args, **kwargs)
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end_time = perf_counter()
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_LOG.info('{0}: {1:.8f}s elapsed'.format(fn.__name__, end_time - start_time))
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return rval
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return inner
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class SubprocessError(RuntimeError):
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"A subprocess exited with a nonzero status"
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def __init__(self, args, status, stdout=None, stderr=None):
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self.status = status
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self.stdout = stdout
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self.stderr = stderr
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msg = '{args} exited with {status}'.format(args=args, status=status)
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if stderr:
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msg = '{msg}: {stderr}'.format(msg=msg, stderr=stderr)
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super(SubprocessError, self).__init__(msg)
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class _SubprocessContextManager(object):
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"""
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PEP 343 context manager for subprocesses.
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'expect' holds a tuple of acceptable exit codes, otherwise we'll
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raise a SubprocessError in __exit__.
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"""
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def __init__(self, process, args, expect=(0,)):
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self._process = process
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self._args = args
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self._expect = expect
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def __enter__(self):
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return self._process
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def __exit__(self, type, value, traceback):
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for name in ['stdin', 'stdout', 'stderr']:
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stream = getattr(self._process, name)
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if stream:
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stream.close()
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setattr(self._process, name, None)
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status = self._process.wait()
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_LOG.debug(
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'collect {args} with status {status} (expected {expect})'.format(
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args=self._args, status=status, expect=self._expect))
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if status not in self._expect:
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raise SubprocessError(args=self._args, status=status)
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def wait(self):
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return self._process.wait()
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def _spawn(args, input=None, additional_env=None, wait=False, stdin=None,
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stdout=None, stderr=None, encoding=_locale.getpreferredencoding(),
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expect=(0,), **kwargs):
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"""Spawn a subprocess, and optionally wait for it to finish.
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This wrapper around subprocess.Popen has two modes, depending on
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the truthiness of 'wait'. If 'wait' is true, we use p.communicate
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internally to write 'input' to the subprocess's stdin and read
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from it's stdout/stderr. If 'wait' is False, we return a
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_SubprocessContextManager instance for fancier handling
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(e.g. piping between processes).
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For 'wait' calls when you want to write to the subprocess's stdin,
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you only need to set 'input' to your content. When 'input' is not
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None but 'stdin' is, we'll automatically set 'stdin' to PIPE
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before calling Popen. This avoids having the subprocess
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accidentally inherit the launching process's stdin.
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"""
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_LOG.debug('spawn {args} (additional env. var.: {env})'.format(
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args=args, env=additional_env))
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if not stdin and input is not None:
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stdin = _subprocess.PIPE
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if additional_env:
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if not kwargs.get('env'):
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kwargs['env'] = dict(_os.environ)
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kwargs['env'].update(additional_env)
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p = _subprocess.Popen(
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args, stdin=stdin, stdout=stdout, stderr=stderr, **kwargs)
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if wait:
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if hasattr(input, 'encode'):
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input = input.encode(encoding)
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(stdout, stderr) = p.communicate(input=input)
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status = p.wait()
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_LOG.debug(
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'collect {args} with status {status} (expected {expect})'.format(
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args=args, status=status, expect=expect))
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if stdout is not None:
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stdout = stdout.decode(encoding)
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if stderr is not None:
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stderr = stderr.decode(encoding)
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if status not in expect:
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raise SubprocessError(
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args=args, status=status, stdout=stdout, stderr=stderr)
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return (status, stdout, stderr)
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if p.stdin and not stdin:
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p.stdin.close()
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p.stdin = None
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if p.stdin:
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p.stdin = _codecs.getwriter(encoding=encoding)(stream=p.stdin)
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stream_reader = _codecs.getreader(encoding=encoding)
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if p.stdout:
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p.stdout = stream_reader(stream=p.stdout)
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if p.stderr:
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p.stderr = stream_reader(stream=p.stderr)
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return _SubprocessContextManager(args=args, process=p, expect=expect)
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def _git(args, **kwargs):
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args = ['git', '--git-dir', NOTMUCH_GIT_DIR] + list(args)
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return _spawn(args=args, **kwargs)
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def _get_current_branch():
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"""Get the name of the current branch.
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Return 'None' if we're not on a branch.
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"""
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try:
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(status, branch, stderr) = _git(
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args=['symbolic-ref', '--short', 'HEAD'],
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stdout=_subprocess.PIPE, stderr=_subprocess.PIPE, wait=True)
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except SubprocessError as e:
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if 'not a symbolic ref' in e:
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return None
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raise
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return branch.strip()
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def _get_remote():
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"Get the default remote for the current branch."
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local_branch = _get_current_branch()
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(status, remote, stderr) = _git(
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args=['config', 'branch.{0}.remote'.format(local_branch)],
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stdout=_subprocess.PIPE, wait=True)
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return remote.strip()
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def _tag_query(prefix=None):
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if prefix is None:
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prefix = TAG_PREFIX
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return '(tag (starts-with "{:s}"))'.format(prefix.replace('"','\\\"'))
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def count_messages(prefix=None):
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"count messages with a given prefix."
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(status, stdout, stderr) = _spawn(
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args=['notmuch', 'count', '--query=sexp', _tag_query(prefix)],
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stdout=_subprocess.PIPE, wait=True)
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if status != 0:
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_LOG.error("failed to run notmuch config")
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sys.exit(1)
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return int(stdout.rstrip())
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def get_tags(prefix=None):
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"Get a list of tags with a given prefix."
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(status, stdout, stderr) = _spawn(
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args=['notmuch', 'search', '--query=sexp', '--output=tags', _tag_query(prefix)],
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stdout=_subprocess.PIPE, wait=True)
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return [tag for tag in stdout.splitlines()]
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def archive(treeish='HEAD', args=()):
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"""
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Dump a tar archive of the current notmuch-git tag set.
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Using 'git archive'.
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Each tag $tag for message with Message-Id $id is written to
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an empty file
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tags/hash1(id)/hash2(id)/encode($id)/encode($tag)
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The encoding preserves alphanumerics, and the characters
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"+-_@=.:," (not the quotes). All other octets are replaced with
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'%' followed by a two digit hex number.
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"""
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_git(args=['archive', treeish] + list(args), wait=True)
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def clone(repository):
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"""
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Create a local notmuch-git repository from a remote source.
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This wraps 'git clone', adding some options to avoid creating a
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working tree while preserving remote-tracking branches and
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upstreams.
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"""
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with _tempfile.TemporaryDirectory(prefix='notmuch-git-clone.') as workdir:
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_spawn(
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args=[
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'git', 'clone', '--no-checkout', '--separate-git-dir', NOTMUCH_GIT_DIR,
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repository, workdir],
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wait=True)
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_git(args=['config', '--unset', 'core.worktree'], wait=True, expect=(0, 5))
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_git(args=['config', 'core.bare', 'true'], wait=True)
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(status, stdout, stderr) = _git(args=['show-ref', '--verify',
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'--quiet',
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'refs/remotes/origin/config'],
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expect=(0,1),
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wait=True)
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if status == 0:
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_git(args=['branch', 'config', 'origin/config'], wait=True)
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existing_tags = get_tags()
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if existing_tags:
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_LOG.warning(
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'Not checking out to avoid clobbering existing tags: {}'.format(
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', '.join(existing_tags)))
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else:
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checkout()
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def _is_committed(status):
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return len(status['added']) + len(status['deleted']) == 0
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class CachedIndex:
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def __init__(self, repo, treeish):
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self.cache_path = _os.path.join(repo, 'notmuch', 'index_cache.json')
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self.index_path = _os.path.join(repo, 'index')
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self.current_treeish = treeish
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# cached values
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self.treeish = None
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self.hash = None
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self.index_checksum = None
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self._load_cache_file()
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def _load_cache_file(self):
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try:
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with open(self.cache_path) as f:
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data = _json.load(f)
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self.treeish = data['treeish']
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self.hash = data['hash']
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self.index_checksum = data['index_checksum']
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except FileNotFoundError:
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pass
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except _json.JSONDecodeError:
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_LOG.error("Error decoding cache")
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_sys.exit(1)
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def __enter__(self):
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self.read_tree()
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return self
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def __exit__(self, type, value, traceback):
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checksum = _read_index_checksum(self.index_path)
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(_, hash, _) = _git(
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args=['rev-parse', self.current_treeish],
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stdout=_subprocess.PIPE,
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wait=True)
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with open(self.cache_path, "w") as f:
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_json.dump({'treeish': self.current_treeish,
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'hash': hash.rstrip(), 'index_checksum': checksum }, f)
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@timed
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def read_tree(self):
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current_checksum = _read_index_checksum(self.index_path)
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(_, hash, _) = _git(
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args=['rev-parse', self.current_treeish],
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stdout=_subprocess.PIPE,
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wait=True)
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current_hash = hash.rstrip()
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if self.current_treeish == self.treeish and \
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self.index_checksum and self.index_checksum == current_checksum and \
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self.hash and self.hash == current_hash:
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return
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_git(args=['read-tree', self.current_treeish], wait=True)
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def check_safe_fraction(status):
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safe = 0.1
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conf = _notmuch_config_get ('git.safe_fraction')
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if conf and conf != '':
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safe=float(conf)
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total = count_messages (TAG_PREFIX)
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if total == 0:
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_LOG.error('No existing tags with given prefix, stopping.'.format(safe))
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_LOG.error('Use --force to override.')
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exit(1)
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change = len(status['added'])+len(status['deleted'])
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fraction = change/total
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_LOG.debug('total messages {:d}, change: {:d}, fraction: {:f}'.format(total,change,fraction))
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if fraction > safe:
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_LOG.error('safe fraction {:f} exceeded, stopping.'.format(safe))
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_LOG.error('Use --force to override or reconfigure git.safe_fraction.')
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exit(1)
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def commit(treeish='HEAD', message=None, force=False):
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"""
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Commit prefix-matching tags from the notmuch database to Git.
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"""
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status = get_status()
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if _is_committed(status=status):
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_LOG.warning('Nothing to commit')
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return
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if not force:
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check_safe_fraction (status)
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with CachedIndex(NOTMUCH_GIT_DIR, treeish) as index:
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try:
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_update_index(status=status)
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(_, tree, _) = _git(
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args=['write-tree'],
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stdout=_subprocess.PIPE,
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wait=True)
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(_, parent, _) = _git(
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args=['rev-parse', treeish],
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stdout=_subprocess.PIPE,
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wait=True)
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(_, commit, _) = _git(
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args=['commit-tree', tree.strip(), '-p', parent.strip()],
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input=message,
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stdout=_subprocess.PIPE,
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wait=True)
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_git(
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args=['update-ref', treeish, commit.strip()],
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stdout=_subprocess.PIPE,
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wait=True)
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except Exception as e:
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_git(args=['read-tree', '--empty'], wait=True)
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_git(args=['read-tree', treeish], wait=True)
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raise
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|
|
|
@timed
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def _update_index(status):
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with _git(
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args=['update-index', '--index-info'],
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stdin=_subprocess.PIPE) as p:
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for id, tags in status['deleted'].items():
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for line in _index_tags_for_message(id=id, status='D', tags=tags):
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p.stdin.write(line)
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for id, tags in status['added'].items():
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for line in _index_tags_for_message(id=id, status='A', tags=tags):
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p.stdin.write(line)
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|
|
|
|
def fetch(remote=None):
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"""
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Fetch changes from the remote repository.
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|
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See 'merge' to bring those changes into notmuch.
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|
"""
|
|
args = ['fetch']
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if remote:
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args.append(remote)
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_git(args=args, wait=True)
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|
|
|
|
|
def init(remote=None,format_version=None):
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"""
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|
Create an empty notmuch-git repository.
|
|
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|
This wraps 'git init' with a few extra steps to support subsequent
|
|
status and commit commands.
|
|
"""
|
|
from pathlib import Path
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|
parent = Path(NOTMUCH_GIT_DIR).parent
|
|
try:
|
|
_os.makedirs(parent)
|
|
except FileExistsError:
|
|
pass
|
|
|
|
if not format_version:
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|
format_version = 1
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format_version=int(format_version)
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|
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if format_version > 1 or format_version < 0:
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_LOG.error("Illegal format version {:d}".format(format_version))
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_sys.exit(1)
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_spawn(args=['git', '--git-dir', NOTMUCH_GIT_DIR, 'init',
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'--initial-branch=master', '--quiet', '--bare'], wait=True)
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_git(args=['config', 'core.logallrefupdates', 'true'], wait=True)
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# create an empty blob (e69de29bb2d1d6434b8b29ae775ad8c2e48c5391)
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|
_git(args=['hash-object', '-w', '--stdin'], input='', wait=True)
|
|
allow_empty=('--allow-empty',)
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if format_version >= 1:
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allow_empty=()
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# create a blob for the FORMAT file
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|
(status, stdout, _) = _git(args=['hash-object', '-w', '--stdin'], stdout=_subprocess.PIPE,
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input='{:d}\n'.format(format_version), wait=True)
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verhash=stdout.rstrip()
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|
_LOG.debug('hash of FORMAT blob = {:s}'.format(verhash))
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|
# Add FORMAT to the index
|
|
_git(args=['update-index', '--add', '--cacheinfo', '100644,{:s},FORMAT'.format(verhash)], wait=True)
|
|
|
|
_git(
|
|
args=[
|
|
'commit', *allow_empty, '-m', 'Start a new notmuch-git repository'
|
|
],
|
|
additional_env={'GIT_WORK_TREE': NOTMUCH_GIT_DIR},
|
|
wait=True)
|
|
|
|
|
|
def checkout(force=None):
|
|
"""
|
|
Update the notmuch database from Git.
|
|
|
|
This is mainly useful to discard your changes in notmuch relative
|
|
to Git.
|
|
"""
|
|
status = get_status()
|
|
|
|
if not force:
|
|
check_safe_fraction(status)
|
|
|
|
with _spawn(
|
|
args=['notmuch', 'tag', '--batch'], stdin=_subprocess.PIPE) as p:
|
|
for id, tags in status['added'].items():
|
|
p.stdin.write(_batch_line(action='-', id=id, tags=tags))
|
|
for id, tags in status['deleted'].items():
|
|
p.stdin.write(_batch_line(action='+', id=id, tags=tags))
|
|
|
|
|
|
def _batch_line(action, id, tags):
|
|
"""
|
|
'notmuch tag --batch' line for adding/removing tags.
|
|
|
|
Set 'action' to '-' to remove a tag or '+' to add the tags to a
|
|
given message id.
|
|
"""
|
|
tag_string = ' '.join(
|
|
'{action}{prefix}{tag}'.format(
|
|
action=action, prefix=_ENCODED_TAG_PREFIX, tag=_hex_quote(tag))
|
|
for tag in tags)
|
|
line = '{tags} -- id:{id}\n'.format(
|
|
tags=tag_string, id=_xapian_quote(string=id))
|
|
return line
|
|
|
|
|
|
def _insist_committed():
|
|
"Die if the the notmuch tags don't match the current HEAD."
|
|
status = get_status()
|
|
if not _is_committed(status=status):
|
|
_LOG.error('\n'.join([
|
|
'Uncommitted changes to {prefix}* tags in notmuch',
|
|
'',
|
|
"For a summary of changes, run 'notmuch-git status'",
|
|
"To save your changes, run 'notmuch-git commit' before merging/pull",
|
|
"To discard your changes, run 'notmuch-git checkout'",
|
|
]).format(prefix=TAG_PREFIX))
|
|
_sys.exit(1)
|
|
|
|
|
|
def pull(repository=None, refspecs=None):
|
|
"""
|
|
Pull (merge) remote repository changes to notmuch.
|
|
|
|
'pull' is equivalent to 'fetch' followed by 'merge'. We use the
|
|
Git-configured repository for your current branch
|
|
(branch.<name>.repository, likely 'origin', and
|
|
branch.<name>.merge, likely 'master').
|
|
"""
|
|
_insist_committed()
|
|
if refspecs and not repository:
|
|
repository = _get_remote()
|
|
args = ['pull']
|
|
if repository:
|
|
args.append(repository)
|
|
if refspecs:
|
|
args.extend(refspecs)
|
|
with _tempfile.TemporaryDirectory(prefix='notmuch-git-pull.') as workdir:
|
|
for command in [
|
|
['reset', '--hard'],
|
|
args]:
|
|
_git(
|
|
args=command,
|
|
additional_env={'GIT_WORK_TREE': workdir},
|
|
wait=True)
|
|
checkout()
|
|
|
|
|
|
def merge(reference='@{upstream}'):
|
|
"""
|
|
Merge changes from 'reference' into HEAD and load the result into notmuch.
|
|
|
|
The default reference is '@{upstream}'.
|
|
"""
|
|
_insist_committed()
|
|
with _tempfile.TemporaryDirectory(prefix='notmuch-git-merge.') as workdir:
|
|
for command in [
|
|
['reset', '--hard'],
|
|
['merge', reference]]:
|
|
_git(
|
|
args=command,
|
|
additional_env={'GIT_WORK_TREE': workdir},
|
|
wait=True)
|
|
checkout()
|
|
|
|
|
|
def log(args=()):
|
|
"""
|
|
A simple wrapper for 'git log'.
|
|
|
|
After running 'notmuch-git fetch', you can inspect the changes with
|
|
'notmuch-git log HEAD..@{upstream}'.
|
|
"""
|
|
# we don't want output trapping here, because we want the pager.
|
|
args = ['log', '--name-status', '--no-renames'] + list(args)
|
|
with _git(args=args, expect=(0, 1, -13)) as p:
|
|
p.wait()
|
|
|
|
|
|
def push(repository=None, refspecs=None):
|
|
"Push the local notmuch-git Git state to a remote repository."
|
|
if refspecs and not repository:
|
|
repository = _get_remote()
|
|
args = ['push']
|
|
if repository:
|
|
args.append(repository)
|
|
if refspecs:
|
|
args.extend(refspecs)
|
|
_git(args=args, wait=True)
|
|
|
|
|
|
def status():
|
|
"""
|
|
Show pending updates in notmuch or git repo.
|
|
|
|
Prints lines of the form
|
|
|
|
ng Message-Id tag
|
|
|
|
where n is a single character representing notmuch database status
|
|
|
|
* A
|
|
|
|
Tag is present in notmuch database, but not committed to notmuch-git
|
|
(equivalently, tag has been deleted in notmuch-git repo, e.g. by a
|
|
pull, but not restored to notmuch database).
|
|
|
|
* D
|
|
|
|
Tag is present in notmuch-git repo, but not restored to notmuch
|
|
database (equivalently, tag has been deleted in notmuch).
|
|
|
|
* U
|
|
|
|
Message is unknown (missing from local notmuch database).
|
|
|
|
The second character (if present) represents a difference between
|
|
local and upstream branches. Typically 'notmuch-git fetch' needs to be
|
|
run to update this.
|
|
|
|
* a
|
|
|
|
Tag is present in upstream, but not in the local Git branch.
|
|
|
|
* d
|
|
|
|
Tag is present in local Git branch, but not upstream.
|
|
"""
|
|
status = get_status()
|
|
# 'output' is a nested defaultdict for message status:
|
|
# * The outer dict is keyed by message id.
|
|
# * The inner dict is keyed by tag name.
|
|
# * The inner dict values are status strings (' a', 'Dd', ...).
|
|
output = _collections.defaultdict(
|
|
lambda : _collections.defaultdict(lambda : ' '))
|
|
for id, tags in status['added'].items():
|
|
for tag in tags:
|
|
output[id][tag] = 'A'
|
|
for id, tags in status['deleted'].items():
|
|
for tag in tags:
|
|
output[id][tag] = 'D'
|
|
for id, tags in status['missing'].items():
|
|
for tag in tags:
|
|
output[id][tag] = 'U'
|
|
if _is_unmerged():
|
|
for id, tag in _diff_refs(filter='A'):
|
|
output[id][tag] += 'a'
|
|
for id, tag in _diff_refs(filter='D'):
|
|
output[id][tag] += 'd'
|
|
for id, tag_status in sorted(output.items()):
|
|
for tag, status in sorted(tag_status.items()):
|
|
print('{status}\t{id}\t{tag}'.format(
|
|
status=status, id=id, tag=tag))
|
|
|
|
|
|
def _is_unmerged(ref='@{upstream}'):
|
|
try:
|
|
(status, fetch_head, stderr) = _git(
|
|
args=['rev-parse', ref],
|
|
stdout=_subprocess.PIPE, stderr=_subprocess.PIPE, wait=True)
|
|
except SubprocessError as e:
|
|
if 'No upstream configured' in e.stderr:
|
|
return
|
|
raise
|
|
(status, base, stderr) = _git(
|
|
args=['merge-base', 'HEAD', ref],
|
|
stdout=_subprocess.PIPE, wait=True)
|
|
return base != fetch_head
|
|
|
|
class DatabaseCache:
|
|
def __init__(self):
|
|
try:
|
|
from notmuch2 import Database
|
|
self._notmuch = Database()
|
|
except ImportError:
|
|
self._notmuch = None
|
|
self._known = {}
|
|
|
|
def known(self,id):
|
|
if id in self._known:
|
|
return self._known[id];
|
|
|
|
if self._notmuch:
|
|
try:
|
|
_ = self._notmuch.find(id)
|
|
self._known[id] = True
|
|
except LookupError:
|
|
self._known[id] = False
|
|
else:
|
|
(_, stdout, stderr) = _spawn(
|
|
args=['notmuch', 'search', '--output=files', 'id:{0}'.format(id)],
|
|
stdout=_subprocess.PIPE,
|
|
wait=True)
|
|
self._known[id] = stdout != None
|
|
return self._known[id]
|
|
|
|
@timed
|
|
def get_status():
|
|
status = {
|
|
'deleted': {},
|
|
'missing': {},
|
|
}
|
|
db = DatabaseCache()
|
|
with PrivateIndex(repo=NOTMUCH_GIT_DIR, prefix=TAG_PREFIX) as index:
|
|
maybe_deleted = index.diff(filter='D')
|
|
for id, tags in maybe_deleted.items():
|
|
if db.known(id):
|
|
status['deleted'][id] = tags
|
|
else:
|
|
status['missing'][id] = tags
|
|
status['added'] = index.diff(filter='A')
|
|
|
|
return status
|
|
|
|
class PrivateIndex:
|
|
def __init__(self, repo, prefix):
|
|
try:
|
|
_os.makedirs(_os.path.join(repo, 'notmuch'))
|
|
except FileExistsError:
|
|
pass
|
|
|
|
file_name = 'notmuch/index'
|
|
self.index_path = _os.path.join(repo, file_name)
|
|
self.cache_path = _os.path.join(repo, 'notmuch', '{:s}.json'.format(_hex_quote(file_name)))
|
|
|
|
self.current_prefix = prefix
|
|
|
|
self.prefix = None
|
|
self.uuid = None
|
|
self.lastmod = None
|
|
self.checksum = None
|
|
self._load_cache_file()
|
|
self.file_tree = None
|
|
self._index_tags()
|
|
|
|
def __enter__(self):
|
|
return self
|
|
|
|
def __exit__(self, type, value, traceback):
|
|
checksum = _read_index_checksum(self.index_path)
|
|
(count, uuid, lastmod) = _read_database_lastmod()
|
|
with open(self.cache_path, "w") as f:
|
|
_json.dump({'prefix': self.current_prefix, 'uuid': uuid, 'lastmod': lastmod, 'checksum': checksum }, f)
|
|
|
|
def _load_cache_file(self):
|
|
try:
|
|
with open(self.cache_path) as f:
|
|
data = _json.load(f)
|
|
self.prefix = data['prefix']
|
|
self.uuid = data['uuid']
|
|
self.lastmod = data['lastmod']
|
|
self.checksum = data['checksum']
|
|
except FileNotFoundError:
|
|
return None
|
|
except _json.JSONDecodeError:
|
|
_LOG.error("Error decoding cache")
|
|
_sys.exit(1)
|
|
|
|
@timed
|
|
def _read_file_tree(self):
|
|
self.file_tree = {}
|
|
|
|
with _git(
|
|
args=['ls-files', 'tags'],
|
|
additional_env={'GIT_INDEX_FILE': self.index_path},
|
|
stdout=_subprocess.PIPE) as git:
|
|
for file in git.stdout:
|
|
dir=_os.path.dirname(file)
|
|
tag=_os.path.basename(file).rstrip()
|
|
if dir not in self.file_tree:
|
|
self.file_tree[dir]=[tag]
|
|
else:
|
|
self.file_tree[dir].append(tag)
|
|
|
|
|
|
def _clear_tags_for_message(self, id):
|
|
"""
|
|
Clear any existing index entries for message 'id'
|
|
|
|
Neither 'id' nor the tags in 'tags' should be encoded/escaped.
|
|
"""
|
|
|
|
if self.file_tree == None:
|
|
self._read_file_tree()
|
|
|
|
dir = _id_path(id)
|
|
|
|
if dir not in self.file_tree:
|
|
return
|
|
|
|
for file in self.file_tree[dir]:
|
|
line = '0 0000000000000000000000000000000000000000\t{:s}/{:s}\n'.format(dir,file)
|
|
yield line
|
|
|
|
|
|
@timed
|
|
def _index_tags(self):
|
|
"Write notmuch tags to private git index."
|
|
prefix = '+{0}'.format(_ENCODED_TAG_PREFIX)
|
|
current_checksum = _read_index_checksum(self.index_path)
|
|
if (self.prefix == None or self.prefix != self.current_prefix
|
|
or self.checksum == None or self.checksum != current_checksum):
|
|
_git(
|
|
args=['read-tree', '--empty'],
|
|
additional_env={'GIT_INDEX_FILE': self.index_path}, wait=True)
|
|
|
|
query = _tag_query()
|
|
clear_tags = False
|
|
(count,uuid,lastmod) = _read_database_lastmod()
|
|
if self.prefix == self.current_prefix and self.uuid \
|
|
and self.uuid == uuid and self.checksum == current_checksum:
|
|
query = '(and (infix "lastmod:{:d}..")) {:s})'.format(self.lastmod+1, query)
|
|
clear_tags = True
|
|
with _spawn(
|
|
args=['notmuch', 'dump', '--format=batch-tag', '--query=sexp', '--', query],
|
|
stdout=_subprocess.PIPE) as notmuch:
|
|
with _git(
|
|
args=['update-index', '--index-info'],
|
|
stdin=_subprocess.PIPE,
|
|
additional_env={'GIT_INDEX_FILE': self.index_path}) as git:
|
|
for line in notmuch.stdout:
|
|
if line.strip().startswith('#'):
|
|
continue
|
|
(tags_string, id) = [_.strip() for _ in line.split(' -- id:')]
|
|
tags = [
|
|
_unquote(tag[len(prefix):])
|
|
for tag in tags_string.split()
|
|
if tag.startswith(prefix)]
|
|
id = _xapian_unquote(string=id)
|
|
if clear_tags:
|
|
for line in self._clear_tags_for_message(id=id):
|
|
git.stdin.write(line)
|
|
for line in _index_tags_for_message(
|
|
id=id, status='A', tags=tags):
|
|
git.stdin.write(line)
|
|
|
|
@timed
|
|
def diff(self, filter):
|
|
"""
|
|
Get an {id: {tag, ...}} dict for a given filter.
|
|
|
|
For example, use 'A' to find added tags, and 'D' to find deleted tags.
|
|
"""
|
|
s = _collections.defaultdict(set)
|
|
with _git(
|
|
args=[
|
|
'diff-index', '--cached', '--diff-filter', filter,
|
|
'--name-only', 'HEAD'],
|
|
additional_env={'GIT_INDEX_FILE': self.index_path},
|
|
stdout=_subprocess.PIPE) as p:
|
|
# Once we drop Python < 3.3, we can use 'yield from' here
|
|
for id, tag in _unpack_diff_lines(stream=p.stdout):
|
|
s[id].add(tag)
|
|
return s
|
|
|
|
def _read_index_checksum (index_path):
|
|
"""Read the index checksum, as defined by index-format.txt in the git source
|
|
WARNING: assumes SHA1 repo"""
|
|
import binascii
|
|
try:
|
|
with open(index_path, 'rb') as f:
|
|
size=_os.path.getsize(index_path)
|
|
f.seek(size-20);
|
|
return binascii.hexlify(f.read(20)).decode('ascii')
|
|
except FileNotFoundError:
|
|
return None
|
|
|
|
def _read_database_lastmod():
|
|
with _spawn(
|
|
args=['notmuch', 'count', '--lastmod', '*'],
|
|
stdout=_subprocess.PIPE) as notmuch:
|
|
(count,uuid,lastmod_str) = notmuch.stdout.readline().split()
|
|
return (count,uuid,int(lastmod_str))
|
|
|
|
def _id_path(id):
|
|
hid=_hex_quote(string=id)
|
|
from hashlib import blake2b
|
|
|
|
if FORMAT_VERSION==0:
|
|
return 'tags/{hid}'.format(hid=hid)
|
|
elif FORMAT_VERSION==1:
|
|
idhash = blake2b(hid.encode('utf8'), digest_size=2).hexdigest()
|
|
return 'tags/{dir1}/{dir2}/{hid}'.format(
|
|
hid=hid,
|
|
dir1=idhash[0:2],dir2=idhash[2:])
|
|
else:
|
|
_LOG.error("Unknown format version",FORMAT_VERSION)
|
|
_sys.exit(1)
|
|
|
|
def _index_tags_for_message(id, status, tags):
|
|
"""
|
|
Update the Git index to either create or delete an empty file.
|
|
|
|
Neither 'id' nor the tags in 'tags' should be encoded/escaped.
|
|
"""
|
|
mode = '100644'
|
|
hash = _EMPTYBLOB
|
|
|
|
if status == 'D':
|
|
mode = '0'
|
|
hash = '0000000000000000000000000000000000000000'
|
|
|
|
for tag in tags:
|
|
path = '{ipath}/{tag}'.format(ipath=_id_path(id),tag=_hex_quote(string=tag))
|
|
yield '{mode} {hash}\t{path}\n'.format(mode=mode, hash=hash, path=path)
|
|
|
|
|
|
def _diff_refs(filter, a='HEAD', b='@{upstream}'):
|
|
with _git(
|
|
args=['diff', '--diff-filter', filter, '--name-only', a, b],
|
|
stdout=_subprocess.PIPE) as p:
|
|
# Once we drop Python < 3.3, we can use 'yield from' here
|
|
for id, tag in _unpack_diff_lines(stream=p.stdout):
|
|
yield id, tag
|
|
|
|
|
|
def _unpack_diff_lines(stream):
|
|
"Iterate through (id, tag) tuples in a diff stream."
|
|
for line in stream:
|
|
match = _TAG_FILE_REGEX[FORMAT_VERSION].match(line.strip())
|
|
if not match:
|
|
message = 'non-tag line in diff: {!r}'.format(line.strip())
|
|
if line.startswith(_TAG_DIRECTORY):
|
|
raise ValueError(message)
|
|
_LOG.info(message)
|
|
continue
|
|
id = _unquote(match.group('id'))
|
|
tag = _unquote(match.group('tag'))
|
|
yield (id, tag)
|
|
|
|
|
|
def _help(parser, command=None):
|
|
"""
|
|
Show help for an notmuch-git command.
|
|
|
|
Because some folks prefer:
|
|
|
|
$ notmuch-git help COMMAND
|
|
|
|
to
|
|
|
|
$ notmuch-git COMMAND --help
|
|
"""
|
|
if command:
|
|
parser.parse_args([command, '--help'])
|
|
else:
|
|
parser.parse_args(['--help'])
|
|
|
|
def _notmuch_config_get(key):
|
|
(status, stdout, stderr) = _spawn(
|
|
args=['notmuch', 'config', 'get', key],
|
|
stdout=_subprocess.PIPE, wait=True)
|
|
if status != 0:
|
|
_LOG.error("failed to run notmuch config")
|
|
_sys.exit(1)
|
|
return stdout.rstrip()
|
|
|
|
def read_format_version():
|
|
try:
|
|
(status, stdout, stderr) = _git(
|
|
args=['cat-file', 'blob', 'master:FORMAT'],
|
|
stdout=_subprocess.PIPE, stderr=_subprocess.PIPE, wait=True)
|
|
except SubprocessError as e:
|
|
_LOG.debug("failed to read FORMAT file from git, assuming format version 0")
|
|
return 0
|
|
|
|
return int(stdout)
|
|
|
|
# based on BaseDirectory.save_data_path from pyxdg (LGPL2+)
|
|
def xdg_data_path(profile):
|
|
resource = _os.path.join('notmuch',profile,'git')
|
|
assert not resource.startswith('/')
|
|
_home = _os.path.expanduser('~')
|
|
xdg_data_home = _os.environ.get('XDG_DATA_HOME') or \
|
|
_os.path.join(_home, '.local', 'share')
|
|
path = _os.path.join(xdg_data_home, resource)
|
|
return path
|
|
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if __name__ == '__main__':
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import argparse
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parser = argparse.ArgumentParser(
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description=__doc__.strip(),
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument(
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'-C', '--git-dir', metavar='REPO',
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help='Git repository to operate on.')
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parser.add_argument(
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'-p', '--tag-prefix', metavar='PREFIX',
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default = None,
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help='Prefix of tags to operate on.')
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parser.add_argument(
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'-N', '--nmbug', action='store_true',
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help='Set defaults for --tag-prefix and --git-dir for the notmuch bug tracker')
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parser.add_argument(
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'-l', '--log-level',
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choices=['critical', 'error', 'warning', 'info', 'debug'],
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help='Log verbosity. Defaults to {!r}.'.format(
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_logging.getLevelName(_LOG.level).lower()))
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help = _functools.partial(_help, parser=parser)
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help.__doc__ = _help.__doc__
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subparsers = parser.add_subparsers(
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title='commands',
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description=(
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'For help on a particular command, run: '
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"'%(prog)s ... <command> --help'."))
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for command in [
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'archive',
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'checkout',
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'clone',
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'commit',
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'fetch',
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'help',
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'init',
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'log',
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'merge',
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'pull',
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'push',
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'status',
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]:
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func = locals()[command]
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doc = _textwrap.dedent(func.__doc__).strip().replace('%', '%%')
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subparser = subparsers.add_parser(
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command,
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help=doc.splitlines()[0],
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description=doc,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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subparser.set_defaults(func=func)
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if command == 'archive':
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subparser.add_argument(
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'treeish', metavar='TREE-ISH', nargs='?', default='HEAD',
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help=(
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'The tree or commit to produce an archive for. Defaults '
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"to 'HEAD'."))
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subparser.add_argument(
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'args', metavar='ARG', nargs='*',
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help=(
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"Argument passed through to 'git archive'. Set anything "
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'before <tree-ish>, see git-archive(1) for details.'))
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elif command == 'checkout':
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subparser.add_argument(
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'-f', '--force', action='store_true',
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help='checkout a large fraction of tags.')
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elif command == 'clone':
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subparser.add_argument(
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'repository',
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help=(
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'The (possibly remote) repository to clone from. See the '
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'URLS section of git-clone(1) for more information on '
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'specifying repositories.'))
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elif command == 'commit':
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subparser.add_argument(
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'-f', '--force', action='store_true',
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help='commit a large fraction of tags.')
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subparser.add_argument(
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'message', metavar='MESSAGE', default='', nargs='?',
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help='Text for the commit message.')
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elif command == 'fetch':
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subparser.add_argument(
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'remote', metavar='REMOTE', nargs='?',
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help=(
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'Override the default configured in branch.<name>.remote '
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'to fetch from a particular remote repository (e.g. '
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"'origin')."))
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elif command == 'help':
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subparser.add_argument(
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'command', metavar='COMMAND', nargs='?',
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help='The command to show help for.')
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elif command == 'init':
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subparser.add_argument(
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'--format-version', metavar='VERSION',
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default = None,
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help='create format VERSION repository.')
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elif command == 'log':
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subparser.add_argument(
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'args', metavar='ARG', nargs='*',
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help="Additional argument passed through to 'git log'.")
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elif command == 'merge':
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subparser.add_argument(
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'reference', metavar='REFERENCE', default='@{upstream}',
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nargs='?',
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help=(
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'Reference, usually other branch heads, to merge into '
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"our branch. Defaults to '@{upstream}'."))
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elif command == 'pull':
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subparser.add_argument(
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'repository', metavar='REPOSITORY', default=None, nargs='?',
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help=(
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'The "remote" repository that is the source of the pull. '
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'This parameter can be either a URL (see the section GIT '
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'URLS in git-pull(1)) or the name of a remote (see the '
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'section REMOTES in git-pull(1)).'))
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subparser.add_argument(
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'refspecs', metavar='REFSPEC', default=None, nargs='*',
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help=(
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'Refspec (usually a branch name) to fetch and merge. See '
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'the <refspec> entry in the OPTIONS section of '
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'git-pull(1) for other possibilities.'))
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elif command == 'push':
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subparser.add_argument(
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'repository', metavar='REPOSITORY', default=None, nargs='?',
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help=(
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'The "remote" repository that is the destination of the '
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'push. This parameter can be either a URL (see the '
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'section GIT URLS in git-push(1)) or the name of a remote '
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'(see the section REMOTES in git-push(1)).'))
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subparser.add_argument(
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'refspecs', metavar='REFSPEC', default=None, nargs='*',
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help=(
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'Refspec (usually a branch name) to push. See '
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'the <refspec> entry in the OPTIONS section of '
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'git-push(1) for other possibilities.'))
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args = parser.parse_args()
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nmbug_mode = False
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notmuch_profile = _os.getenv('NOTMUCH_PROFILE','default')
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if args.nmbug or _os.path.basename(__file__) == 'nmbug':
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nmbug_mode = True
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if args.git_dir:
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NOTMUCH_GIT_DIR = args.git_dir
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else:
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if nmbug_mode:
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default = _os.path.join('~', '.nmbug')
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else:
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default = _notmuch_config_get ('git.path')
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if default == '':
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default = xdg_data_path(notmuch_profile)
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NOTMUCH_GIT_DIR = _os.path.expanduser(_os.getenv('NOTMUCH_GIT_DIR', default))
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_NOTMUCH_GIT_DIR = _os.path.join(NOTMUCH_GIT_DIR, '.git')
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if _os.path.isdir(_NOTMUCH_GIT_DIR):
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NOTMUCH_GIT_DIR = _NOTMUCH_GIT_DIR
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if args.tag_prefix:
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TAG_PREFIX = args.tag_prefix
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else:
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if nmbug_mode:
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prefix = 'notmuch::'
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else:
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prefix = _notmuch_config_get ('git.tag_prefix')
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TAG_PREFIX = _os.getenv('NOTMUCH_GIT_PREFIX', prefix)
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_ENCODED_TAG_PREFIX = _hex_quote(TAG_PREFIX, safe='+@=,') # quote ':'
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if args.log_level:
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level = getattr(_logging, args.log_level.upper())
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_LOG.setLevel(level)
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# for test suite
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for var in ['NOTMUCH_GIT_DIR', 'NOTMUCH_GIT_PREFIX', 'NOTMUCH_PROFILE', 'NOTMUCH_CONFIG' ]:
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_LOG.debug('env {:s} = {:s}'.format(var, _os.getenv(var,'%None%')))
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if _notmuch_config_get('built_with.sexp_queries') != 'true':
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_LOG.error("notmuch git needs sexp query support")
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_sys.exit(1)
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if not getattr(args, 'func', None):
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parser.print_usage()
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_sys.exit(1)
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# The following two lines are used by the test suite.
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_LOG.debug('prefix = {:s}'.format(TAG_PREFIX))
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_LOG.debug('repository = {:s}'.format(NOTMUCH_GIT_DIR))
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if args.func != init:
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FORMAT_VERSION = read_format_version()
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_LOG.debug('FORMAT_VERSION={:d}'.format(FORMAT_VERSION))
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if args.func == help:
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arg_names = ['command']
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else:
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(arg_names, varargs, varkw) = _inspect.getargs(args.func.__code__)
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kwargs = {key: getattr(args, key) for key in arg_names if key in args}
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try:
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args.func(**kwargs)
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except SubprocessError as e:
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if _LOG.level == _logging.DEBUG:
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raise # don't mask the traceback
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_LOG.error(str(e))
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_sys.exit(1)
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