libervia-backend/sat/plugins/plugin_merge_req_mercurial.py

167 lines
6.9 KiB
Python

#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# SàT plugin for import external blogs
# Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import re
from twisted.python.procutils import which
from sat.tools.common import async_process
from sat.tools import utils
from sat.core.i18n import _, D_
from sat.core.constants import Const as C
from sat.core import exceptions
from sat.core.log import getLogger
log = getLogger(__name__)
PLUGIN_INFO = {
C.PI_NAME: "Mercurial Merge Request handler",
C.PI_IMPORT_NAME: "MERGE_REQUEST_MERCURIAL",
C.PI_TYPE: C.PLUG_TYPE_MISC,
C.PI_DEPENDENCIES: ["MERGE_REQUESTS"],
C.PI_MAIN: "MercurialHandler",
C.PI_HANDLER: "no",
C.PI_DESCRIPTION: _(u"""Merge request handler for Mercurial""")
}
SHORT_DESC = D_(u"handle Mercurial repository")
CLEAN_RE = re.compile(ur'[^\w -._]', flags=re.UNICODE)
class MercurialProtocol(async_process.CommandProtocol):
"""handle hg commands"""
name = u"Mercurial"
command = None
@classmethod
def run(cls, path, command, *args, **kwargs):
"""Create a new MercurialRegisterProtocol and execute the given mercurial command.
@param path(unicode): path to the repository
@param command(unicode): hg command to run
"""
assert u"path" not in kwargs
kwargs["path"] = path
# FIXME: we have to use this workaround because Twisted's protocol.ProcessProtocol
# is not using new style classes. This can be removed once moved to
# Python 3 (super can be used normally then).
d = async_process.CommandProtocol.run.__func__(cls, command, *args, **kwargs)
d.addErrback(utils.logError)
return d
class MercurialHandler(object):
data_types = (u'mercurial_changeset',)
def __init__(self, host):
log.info(_(u"Mercurial merge request handler initialization"))
try:
MercurialProtocol.command = which('hg')[0]
except IndexError:
raise exceptions.NotFound(_(u"Mercurial executable (hg) not found, "
u"can't use Mercurial handler"))
self.host = host
self._m = host.plugins['MERGE_REQUESTS']
self._m.register('mercurial', self, self.data_types, SHORT_DESC)
def check(self, repository):
d = MercurialProtocol.run(repository, 'identify')
d.addCallback(lambda __: True)
d.addErrback(lambda __: False)
return d
def export(self, repository):
return MercurialProtocol.run(repository, 'export', '-g', '-r', 'outgoing()',
'--encoding=utf-8')
def import_(self, repository, data, data_type, item_id, service, node, extra):
parsed_data = self.parse(data)
try:
parsed_name = parsed_data[0][u'commit_msg'].split(u'\n')[0]
parsed_name = CLEAN_RE.sub(u'', parsed_name)[:40]
except Exception:
parsed_name = u''
name = u'mr_{item_id}_{parsed_name}'.format(item_id=CLEAN_RE.sub(u'', item_id),
parsed_name=parsed_name)
return MercurialProtocol.run(repository, 'qimport', '-g', '--name', name,
'--encoding=utf-8', '-', stdin=data)
def parse(self, data, data_type=None):
lines = data.splitlines()
total_lines = len(lines)
patches = []
while lines:
patch = {}
commit_msg = []
diff = []
state = 'init'
if lines[0] != '# HG changeset patch':
raise exceptions.DataError(_(u'invalid changeset signature'))
# line index of this patch in the whole data
patch_idx = total_lines - len(lines)
del lines[0]
for idx, line in enumerate(lines):
if state == 'init':
if line.startswith(u'# '):
if line.startswith(u'# User '):
elems = line[7:].split()
if not elems:
continue
last = elems[-1]
if (last.startswith(u'<') and last.endswith(u'>')
and u'@' in last):
patch[self._m.META_EMAIL] = elems.pop()[1:-1]
patch[self._m.META_AUTHOR] = u' '.join(elems)
elif line.startswith(u'# Date '):
time_data = line[7:].split()
if len(time_data) != 2:
log.warning(_(u'unexpected time data: {data}')
.format(data=line[7:]))
continue
patch[self._m.META_TIMESTAMP] = (int(time_data[0])
+ int(time_data[1]))
elif line.startswith(u'# Node ID '):
patch[self._m.META_HASH] = line[10:]
elif line.startswith(u'# Parent '):
patch[self._m.META_PARENT_HASH] = line[10:]
else:
state = 'commit_msg'
if state == 'commit_msg':
if line.startswith(u'diff --git a/'):
state = 'diff'
patch[self._m.META_DIFF_IDX] = patch_idx + idx + 1
else:
commit_msg.append(line)
if state == 'diff':
if line.startswith(u'# ') or idx == len(lines)-1:
# a new patch is starting or we have reached end of patches
if idx == len(lines)-1:
# end of patches, we need to keep the line
diff.append(line)
patch[self._m.META_COMMIT_MSG] = u'\n'.join(commit_msg)
patch[self._m.META_DIFF] = u'\n'.join(diff)
patches.append(patch)
if idx == len(lines)-1:
del lines[:]
else:
del lines[:idx]
break
else:
diff.append(line)
return patches