Mercurial > hg
annotate hgext/convert/darcs.py @ 29685:06e642d7f76c
tests: use 'legacy.exchange' option in 'test-bundle2-exchange.t'
The new option will stay around. The experimental option was only meant to be
temporary.
author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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date | Tue, 02 Aug 2016 15:23:03 +0200 |
parents | b9296b330a54 |
children | 671aba341d90 |
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1 # darcs.py - darcs support for the convert extension |
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2 # |
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3 # Copyright 2007-2009 Matt Mackall <mpm@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 from __future__ import absolute_import |
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8 |
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9 import errno |
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10 import os |
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11 import re |
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12 import shutil |
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13 import tempfile |
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14 from mercurial.i18n import _ |
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15 from mercurial import ( |
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16 error, |
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17 util, |
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18 ) |
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19 from . import common |
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20 NoRepo = common.NoRepo |
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21 |
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22 # The naming drift of ElementTree is fun! |
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23 |
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24 try: |
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25 import xml.etree.cElementTree.ElementTree as ElementTree |
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26 import xml.etree.cElementTree.XMLParser as XMLParser |
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27 except ImportError: |
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28 try: |
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29 import xml.etree.ElementTree.ElementTree as ElementTree |
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30 import xml.etree.ElementTree.XMLParser as XMLParser |
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31 except ImportError: |
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32 try: |
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33 import elementtree.cElementTree.ElementTree as ElementTree |
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34 import elementtree.cElementTree.XMLParser as XMLParser |
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35 except ImportError: |
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36 try: |
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37 import elementtree.ElementTree.ElementTree as ElementTree |
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38 import elementtree.ElementTree.XMLParser as XMLParser |
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39 except ImportError: |
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40 pass |
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41 |
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42 class darcs_source(common.converter_source, common.commandline): |
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43 def __init__(self, ui, path, revs=None): |
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44 common.converter_source.__init__(self, ui, path, revs=revs) |
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45 common.commandline.__init__(self, ui, 'darcs') |
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46 |
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47 # check for _darcs, ElementTree so that we can easily skip |
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48 # test-convert-darcs if ElementTree is not around |
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49 if not os.path.exists(os.path.join(path, '_darcs')): |
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50 raise NoRepo(_("%s does not look like a darcs repository") % path) |
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51 |
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52 common.checktool('darcs') |
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53 version = self.run0('--version').splitlines()[0].strip() |
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54 if version < '2.1': |
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55 raise error.Abort(_('darcs version 2.1 or newer needed (found %r)') |
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56 % version) |
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57 |
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58 if "ElementTree" not in globals(): |
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59 raise error.Abort(_("Python ElementTree module is not available")) |
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60 |
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61 self.path = os.path.realpath(path) |
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62 |
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63 self.lastrev = None |
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64 self.changes = {} |
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65 self.parents = {} |
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66 self.tags = {} |
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67 |
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68 # Check darcs repository format |
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69 format = self.format() |
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70 if format: |
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71 if format in ('darcs-1.0', 'hashed'): |
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72 raise NoRepo(_("%s repository format is unsupported, " |
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73 "please upgrade") % format) |
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74 else: |
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75 self.ui.warn(_('failed to detect repository format!')) |
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76 |
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77 def before(self): |
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78 self.tmppath = tempfile.mkdtemp( |
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79 prefix='convert-' + os.path.basename(self.path) + '-') |
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80 output, status = self.run('init', repodir=self.tmppath) |
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81 self.checkexit(status) |
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82 |
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83 tree = self.xml('changes', xml_output=True, summary=True, |
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84 repodir=self.path) |
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85 tagname = None |
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86 child = None |
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87 for elt in tree.findall('patch'): |
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88 node = elt.get('hash') |
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89 name = elt.findtext('name', '') |
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90 if name.startswith('TAG '): |
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91 tagname = name[4:].strip() |
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92 elif tagname is not None: |
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93 self.tags[tagname] = node |
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94 tagname = None |
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95 self.changes[node] = elt |
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96 self.parents[child] = [node] |
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97 child = node |
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98 self.parents[child] = [] |
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99 |
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100 def after(self): |
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101 self.ui.debug('cleaning up %s\n' % self.tmppath) |
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102 shutil.rmtree(self.tmppath, ignore_errors=True) |
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103 |
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104 def recode(self, s, encoding=None): |
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105 if isinstance(s, unicode): |
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106 # XMLParser returns unicode objects for anything it can't |
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107 # encode into ASCII. We convert them back to str to get |
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108 # recode's normal conversion behavior. |
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109 s = s.encode('latin-1') |
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110 return super(darcs_source, self).recode(s, encoding) |
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111 |
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112 def xml(self, cmd, **kwargs): |
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113 # NOTE: darcs is currently encoding agnostic and will print |
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114 # patch metadata byte-for-byte, even in the XML changelog. |
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115 etree = ElementTree() |
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116 # While we are decoding the XML as latin-1 to be as liberal as |
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117 # possible, etree will still raise an exception if any |
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118 # non-printable characters are in the XML changelog. |
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119 parser = XMLParser(encoding='latin-1') |
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120 p = self._run(cmd, **kwargs) |
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121 etree.parse(p.stdout, parser=parser) |
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122 p.wait() |
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123 self.checkexit(p.returncode) |
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124 return etree.getroot() |
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125 |
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126 def format(self): |
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127 output, status = self.run('show', 'repo', no_files=True, |
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128 repodir=self.path) |
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129 self.checkexit(status) |
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130 m = re.search(r'^\s*Format:\s*(.*)$', output, re.MULTILINE) |
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131 if not m: |
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132 return None |
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133 return ','.join(sorted(f.strip() for f in m.group(1).split(','))) |
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134 |
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135 def manifest(self): |
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136 man = [] |
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137 output, status = self.run('show', 'files', no_directories=True, |
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138 repodir=self.tmppath) |
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139 self.checkexit(status) |
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140 for line in output.split('\n'): |
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141 path = line[2:] |
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142 if path: |
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143 man.append(path) |
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144 return man |
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145 |
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146 def getheads(self): |
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147 return self.parents[None] |
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148 |
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149 def getcommit(self, rev): |
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150 elt = self.changes[rev] |
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151 date = util.strdate(elt.get('local_date'), '%a %b %d %H:%M:%S %Z %Y') |
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152 desc = elt.findtext('name') + '\n' + elt.findtext('comment', '') |
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153 # etree can return unicode objects for name, comment, and author, |
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154 # so recode() is used to ensure str objects are emitted. |
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155 return common.commit(author=self.recode(elt.get('author')), |
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156 date=util.datestr(date, '%Y-%m-%d %H:%M:%S %1%2'), |
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157 desc=self.recode(desc).strip(), |
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158 parents=self.parents[rev]) |
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159 |
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160 def pull(self, rev): |
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161 output, status = self.run('pull', self.path, all=True, |
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162 match='hash %s' % rev, |
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163 no_test=True, no_posthook=True, |
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164 external_merge='/bin/false', |
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165 repodir=self.tmppath) |
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166 if status: |
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167 if output.find('We have conflicts in') == -1: |
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168 self.checkexit(status, output) |
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169 output, status = self.run('revert', all=True, repodir=self.tmppath) |
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170 self.checkexit(status, output) |
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171 |
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172 def getchanges(self, rev, full): |
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173 if full: |
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174 raise error.Abort(_("convert from darcs does not support --full")) |
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175 copies = {} |
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176 changes = [] |
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177 man = None |
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178 for elt in self.changes[rev].find('summary').getchildren(): |
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179 if elt.tag in ('add_directory', 'remove_directory'): |
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180 continue |
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181 if elt.tag == 'move': |
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182 if man is None: |
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183 man = self.manifest() |
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184 source, dest = elt.get('from'), elt.get('to') |
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185 if source in man: |
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186 # File move |
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187 changes.append((source, rev)) |
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188 changes.append((dest, rev)) |
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189 copies[dest] = source |
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190 else: |
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191 # Directory move, deduce file moves from manifest |
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192 source = source + '/' |
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193 for f in man: |
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194 if not f.startswith(source): |
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195 continue |
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196 fdest = dest + '/' + f[len(source):] |
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197 changes.append((f, rev)) |
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198 changes.append((fdest, rev)) |
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199 copies[fdest] = f |
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200 else: |
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201 changes.append((elt.text.strip(), rev)) |
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202 self.pull(rev) |
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203 self.lastrev = rev |
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204 return sorted(changes), copies, set() |
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205 |
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206 def getfile(self, name, rev): |
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207 if rev != self.lastrev: |
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208 raise error.Abort(_('internal calling inconsistency')) |
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209 path = os.path.join(self.tmppath, name) |
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210 try: |
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211 data = util.readfile(path) |
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212 mode = os.lstat(path).st_mode |
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213 except IOError as inst: |
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214 if inst.errno == errno.ENOENT: |
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215 return None, None |
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216 raise |
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217 mode = (mode & 0o111) and 'x' or '' |
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218 return data, mode |
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219 |
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220 def gettags(self): |
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221 return self.tags |