Mercurial > libervia-backend

annotate libervia/backend/plugins/plugin_merge_req_mercurial.py @ 4279:6276242736c3

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doc (components): Documentation for the new `Conferences` component: fix 445
author Goffi <goffi@goffi.org>
date Fri, 05 Jul 2024 17:18:37 +0200
parents 0d7bb4df2343
children
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1 #!/usr/bin/env python3
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2
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3 # SàT plugin managing Mercurial VCS
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4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 import re
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20 from twisted.python.procutils import which
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21 from libervia.backend.tools.common import async_process
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22 from libervia.backend.tools import utils
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23 from libervia.backend.core.i18n import _, D_
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24 from libervia.backend.core.constants import Const as C
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25 from libervia.backend.core import exceptions
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26 from libervia.backend.core.log import getLogger
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27
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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: _("""Merge request handler for Mercurial"""),
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39 }
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40
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41 SHORT_DESC = D_("handle Mercurial repository")
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42 CLEAN_RE = re.compile(r"[^\w -._]", flags=re.UNICODE)
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43
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44
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45 class MercurialProtocol(async_process.CommandProtocol):
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46 """handle hg commands"""
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47
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48 name = "Mercurial"
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49 command = None
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50
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51 @classmethod
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52 def run(cls, path, command, *args, **kwargs):
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53 """Create a new MercurialRegisterProtocol and execute the given mercurial command.
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54
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55 @param path(unicode): path to the repository
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56 @param command(unicode): hg command to run
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57 @return D(bytes): stdout of the command
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58 """
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59 assert "path" not in kwargs
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60 kwargs["path"] = path
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61 # FIXME: we have to use this workaround because Twisted's protocol.ProcessProtocol
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62 # is not using new style classes. This can be removed once moved to
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63 # Python 3 (super can be used normally then).
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64 d = async_process.CommandProtocol.run.__func__(cls, command, *args, **kwargs)
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65 d.addErrback(utils.logError)
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66 return d
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67
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68
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69 class MercurialHandler(object):
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70 data_types = ("mercurial_changeset",)
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71
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72 def __init__(self, host):
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73 log.info(_("Mercurial merge request handler initialization"))
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74 try:
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75 MercurialProtocol.command = which("hg")[0]
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76 except IndexError:
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77 raise exceptions.NotFound(
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78 _("Mercurial executable (hg) not found, " "can't use Mercurial handler")
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79 )
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80 self.host = host
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81 self._m = host.plugins["MERGE_REQUESTS"]
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82 self._m.register("mercurial", self, self.data_types, SHORT_DESC)
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83
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84 def check(self, repository):
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85 d = MercurialProtocol.run(repository, "identify")
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86 d.addCallback(lambda __: True)
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87 d.addErrback(lambda __: False)
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88 return d
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89
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90 def export(self, repository):
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91 d = MercurialProtocol.run(
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92 repository,
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93 "export",
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94 "-g",
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95 "-r",
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96 "outgoing() and ancestors(.)",
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97 "--encoding=utf-8",
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98 )
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99 d.addCallback(lambda data: data.decode("utf-8"))
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100 return d
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101
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102 def import_(self, repository, data, data_type, item_id, service, node, extra):
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103 parsed_data = self.parse(data)
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104 try:
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105 parsed_name = parsed_data[0]["commit_msg"].split("\n")[0]
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106 parsed_name = CLEAN_RE.sub("", parsed_name)[:40]
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107 except Exception:
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108 parsed_name = ""
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109 name = "mr_{item_id}_{parsed_name}".format(
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110 item_id=CLEAN_RE.sub("", item_id), parsed_name=parsed_name
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111 )
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112 return MercurialProtocol.run(
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113 repository,
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114 "qimport",
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115 "-g",
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116 "--name",
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117 name,
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118 "--encoding=utf-8",
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119 "-",
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120 stdin=data,
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121 )
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122
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123 def parse(self, data, data_type=None):
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124 lines = data.splitlines()
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125 total_lines = len(lines)
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126 patches = []
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127 while lines:
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128 patch = {}
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129 commit_msg = []
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130 diff = []
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131 state = "init"
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132 if lines[0] != "# HG changeset patch":
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133 raise exceptions.DataError(_("invalid changeset signature"))
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134 # line index of this patch in the whole data
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135 patch_idx = total_lines - len(lines)
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136 del lines[0]
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137
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138 for idx, line in enumerate(lines):
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139 if state == "init":
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140 if line.startswith("# "):
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141 if line.startswith("# User "):
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142 elems = line[7:].split()
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143 if not elems:
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144 continue
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145 last = elems[-1]
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146 if (
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147 last.startswith("<")
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148 and last.endswith(">")
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149 and "@" in last
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150 ):
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151 patch[self._m.META_EMAIL] = elems.pop()[1:-1]
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152 patch[self._m.META_AUTHOR] = " ".join(elems)
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153 elif line.startswith("# Date "):
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154 time_data = line[7:].split()
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155 if len(time_data) != 2:
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156 log.warning(
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157 _("unexpected time data: {data}").format(
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158 data=line[7:]
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159 )
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160 )
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161 continue
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162 patch[self._m.META_TIMESTAMP] = int(time_data[0]) + int(
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163 time_data[1]
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164 )
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165 elif line.startswith("# Node ID "):
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166 patch[self._m.META_HASH] = line[10:]
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167 elif line.startswith("# Parent "):
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168 patch[self._m.META_PARENT_HASH] = line[10:]
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169 else:
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170 state = "commit_msg"
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171 if state == "commit_msg":
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172 if line.startswith("diff --git a/"):
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173 state = "diff"
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174 patch[self._m.META_DIFF_IDX] = patch_idx + idx + 1
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175 else:
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176 commit_msg.append(line)
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177 if state == "diff":
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178 if line.startswith("# ") or idx == len(lines) - 1:
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179 # a new patch is starting or we have reached end of patches
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180 if idx == len(lines) - 1:
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181 # end of patches, we need to keep the line
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182 diff.append(line)
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183 patch[self._m.META_COMMIT_MSG] = "\n".join(commit_msg)
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184 patch[self._m.META_DIFF] = "\n".join(diff)
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185 patches.append(patch)
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186 if idx == len(lines) - 1:
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187 del lines[:]
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188 else:
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189 del lines[:idx]
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190 break
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191 else:
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192 diff.append(line)
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193 return patches