Mercurial > libervia-backend

annotate sat/plugins/plugin_merge_req_mercurial.py @ 2627:163aab916bcf

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plugin merge-request/mercurial: fixed missing last line in diff while parsing patch
author Goffi <goffi@goffi.org>
date Fri, 29 Jun 2018 15:54:46 +0200
parents 49533de4540b
children 378188abe941
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SàT plugin for import external blogs
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5 # Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _, D_
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21 from sat.core.constants import Const as C
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22 from sat.core import exceptions
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23 from twisted.internet import reactor, defer, protocol
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24 from twisted.python.failure import Failure
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25 from twisted.python.procutils import which
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26 import re
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27 from sat.core.log import getLogger
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28 log = getLogger(__name__)
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29
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30
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31 PLUGIN_INFO = {
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32 C.PI_NAME: "Mercurial Merge Request handler",
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33 C.PI_IMPORT_NAME: "MERGE_REQUEST_MERCURIAL",
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34 C.PI_TYPE: C.PLUG_TYPE_MISC,
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35 C.PI_DEPENDENCIES: ["MERGE_REQUESTS"],
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36 C.PI_MAIN: "MercurialHandler",
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37 C.PI_HANDLER: "no",
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38 C.PI_DESCRIPTION: _(u"""Merge request handler for Mercurial""")
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39 }
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40
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41 SHORT_DESC = D_(u"handle Mercurial repository")
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42 CLEAN_RE = re.compile(ur'[^\w -._]', flags=re.UNICODE)
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43
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44
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45 class MercurialProtocol(protocol.ProcessProtocol):
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46 """handle hg commands"""
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47 hg = None
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48
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49 def __init__(self, deferred, stdin=None):
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50 """
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51 @param deferred(defer.Deferred): will be called when command is completed
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52 @param stdin(str, None): if not None, will be push to standard input
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53 """
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54 self._stdin = stdin
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55 self._deferred = deferred
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56 self.data = []
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57
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58 def connectionMade(self):
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59 if self._stdin is not None:
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60 self.transport.write(self._stdin)
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61 self.transport.closeStdin()
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62
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63 def outReceived(self, data):
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64 self.data.append(data)
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65
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66 def errReceived(self, data):
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67 self.data.append(data)
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68
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69 def processEnded(self, reason):
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70 data = u''.join([d.decode('utf-8') for d in self.data])
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71 if (reason.value.exitCode == 0):
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72 log.debug(_('Mercurial command succeed'))
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73 self._deferred.callback(data)
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74 else:
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75 msg = (_(u"Can't complete Mercurial command (error code: {code}): {message}")
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76 .format(code = reason.value.exitCode, message = data))
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77 log.warning(msg)
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78 self._deferred.errback(Failure(RuntimeError(msg)))
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79
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80 @classmethod
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81 def run(cls, path, command, *args, **kwargs):
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82 """Create a new MercurialRegisterProtocol and execute the given mercurial command.
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83
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84 @param path(unicode): path to the repository
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85 @param command(unicode): command to run
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86 @param *args(unicode): command arguments
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87 @param **kwargs: used because Python2 doesn't handle normal kw args after *args
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88 can only be:
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89 - stdin(unicode, None): data to push to standard input
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90 @return ((D)):
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91 """
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92 stdin = kwargs.pop('stdin', None)
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93 if kwargs:
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94 raise exceptions.InternalError(u'only stdin is allowed as keyword argument')
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95 if stdin is not None:
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96 stdin = stdin.encode('utf-8')
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97 d = defer.Deferred()
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98 mercurial_prot = MercurialProtocol(d, stdin=stdin)
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99 cmd_args = [cls.hg, command.encode('utf-8')]
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100 cmd_args.extend([a.encode('utf-8') for a in args])
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101 reactor.spawnProcess(mercurial_prot,
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102 cls.hg,
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103 cmd_args,
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104 path=path.encode('utf-8'))
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105 return d
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106
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107
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108 class MercurialHandler(object):
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109 data_types = (u'mercurial_changeset',)
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110
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111 def __init__(self, host):
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112 log.info(_(u"Mercurial merge request handler initialization"))
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113 try:
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114 MercurialProtocol.hg = which('hg')[0]
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115 except IndexError:
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116 raise exceptions.NotFound(_(u"Mercurial executable (hg) not found, "
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117 u"can't use Mercurial handler"))
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118 self.host = host
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119 self._m = host.plugins['MERGE_REQUESTS']
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120 self._m.register('mercurial', self, self.data_types, SHORT_DESC)
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121
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122 def check(self, repository):
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123 d = MercurialProtocol.run(repository, 'identify')
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124 d.addCallback(lambda dummy: True)
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125 d.addErrback(lambda dummy: False)
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126 return d
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127
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128 def export(self, repository):
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129 return MercurialProtocol.run(repository, 'export', '-g', '-r', 'outgoing()',
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130 '--encoding=utf-8')
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131
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132 def import_(self, repository, data, data_type, item_id, service, node, extra):
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133 parsed_data = self.parse(data)
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134 try:
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135 parsed_name = parsed_data[0][u'commit_msg'].split(u'\n')[0]
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136 parsed_name = CLEAN_RE.sub(u'', parsed_name)[:40]
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137 except Exception:
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138 parsed_name = u''
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139 name = u'mr_{item_id}_{parsed_name}'.format(item_id=CLEAN_RE.sub(u'', item_id),
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140 parsed_name=parsed_name)
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141 return MercurialProtocol.run(repository, 'qimport', '-g', '--name', name,
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142 '--encoding=utf-8', '-', stdin=data)
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143
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144 def parse(self, data, data_type=None):
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145 lines = data.splitlines()
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146 total_lines = len(lines)
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147 patches = []
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148 while lines:
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149 patch = {}
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150 commit_msg = []
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151 diff = []
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152 state = 'init'
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153 if lines[0] != '# HG changeset patch':
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154 raise exceptions.DataError(_(u'invalid changeset signature'))
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155 # line index of this patch in the whole data
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156 patch_idx = total_lines - len(lines)
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157 del lines[0]
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158
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159 for idx, line in enumerate(lines):
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160 if state == 'init':
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161 if line.startswith(u'# '):
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162 if line.startswith(u'# User '):
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163 elems = line[7:].split()
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164 if not elems:
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165 continue
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166 last = elems[-1]
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167 if (last.startswith(u'<') and last.endswith(u'>')
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168 and u'@' in last):
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169 patch[self._m.META_EMAIL] = elems.pop()[1:-1]
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170 patch[self._m.META_AUTHOR] = u' '.join(elems)
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171 elif line.startswith(u'# Date '):
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172 time_data = line[7:].split()
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173 if len(time_data) != 2:
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174 log.warning(_(u'unexpected time data: {data}')
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175 .format(data=line[7:]))
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176 continue
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177 patch[self._m.META_TIMESTAMP] = (int(time_data[0])
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178 + int(time_data[1]))
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179 elif line.startswith(u'# Node ID '):
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180 patch[self._m.META_HASH] = line[10:]
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181 elif line.startswith(u'# Parent '):
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182 patch[self._m.META_PARENT_HASH] = line[10:]
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183 else:
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184 state = 'commit_msg'
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185 if state == 'commit_msg':
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186 if line.startswith(u'diff --git a/'):
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187 state = 'diff'
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188 patch[self._m.META_DIFF_IDX] = patch_idx + idx + 1
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189 else:
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190 commit_msg.append(line)
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191 if state == 'diff':
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192 if line.startswith(u'# ') or idx == len(lines)-1:
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193 # a new patch is starting or we have reached end of patches
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194 if idx == len(lines)-1:
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195 # end of patches, we need to keep the line
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196 diff.append(line)
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197 patch[self._m.META_COMMIT_MSG] = u'\n'.join(commit_msg)
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198 patch[self._m.META_DIFF] = u'\n'.join(diff)
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199 patches.append(patch)
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200 if idx == len(lines)-1:
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201 del lines[:]
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202 else:
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203 del lines[:idx]
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204 break
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205 else:
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206 diff.append(line)
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207 return patches