annotate hgext/convert/darcs.py @ 9541:53a95a744812

Merge with crew-stable
author Patrick Mezard <pmezard@gmail.com>
date Sun, 04 Oct 2009 23:16:54 +0200
parents 4c041f1ee1b4 b3c13e721593
children 18b134ef294c
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rev   line source
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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
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6 # GNU General Public License version 2, incorporated herein by reference.
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7
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8 from common import NoRepo, checktool, commandline, commit, converter_source
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9 from mercurial.i18n import _
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10 from mercurial import util
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11 import os, shutil, tempfile
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12
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13 # The naming drift of ElementTree is fun!
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14
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15 try: from xml.etree.cElementTree import ElementTree
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16 except ImportError:
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17 try: from xml.etree.ElementTree import ElementTree
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18 except ImportError:
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19 try: from elementtree.cElementTree import ElementTree
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20 except ImportError:
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21 try: from elementtree.ElementTree import ElementTree
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22 except ImportError: ElementTree = None
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23
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24
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25 class darcs_source(converter_source, commandline):
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26 def __init__(self, ui, path, rev=None):
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27 converter_source.__init__(self, ui, path, rev=rev)
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28 commandline.__init__(self, ui, 'darcs')
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29
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30 # check for _darcs, ElementTree, _darcs/inventory so that we can
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31 # easily skip test-convert-darcs if ElementTree is not around
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32 if not os.path.exists(os.path.join(path, '_darcs', 'inventories')):
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33 raise NoRepo("%s does not look like a darcs repo" % path)
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34
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35 if not os.path.exists(os.path.join(path, '_darcs')):
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36 raise NoRepo("%s does not look like a darcs repo" % path)
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37
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38 checktool('darcs')
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39 version = self.run0('--version').splitlines()[0].strip()
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40 if version < '2.1':
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41 raise util.Abort(_('darcs version 2.1 or newer needed (found %r)') %
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42 version)
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43
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44 if ElementTree is None:
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45 raise util.Abort(_("Python ElementTree module is not available"))
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46
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47 self.path = os.path.realpath(path)
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48
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49 self.lastrev = None
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50 self.changes = {}
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51 self.parents = {}
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52 self.tags = {}
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53
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54 def before(self):
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55 self.tmppath = tempfile.mkdtemp(
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56 prefix='convert-' + os.path.basename(self.path) + '-')
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57 output, status = self.run('init', repodir=self.tmppath)
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58 self.checkexit(status)
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59
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60 tree = self.xml('changes', xml_output=True, summary=True,
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61 repodir=self.path)
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62 tagname = None
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63 child = None
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64 for elt in tree.findall('patch'):
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65 node = elt.get('hash')
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66 name = elt.findtext('name', '')
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67 if name.startswith('TAG '):
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68 tagname = name[4:].strip()
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69 elif tagname is not None:
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70 self.tags[tagname] = node
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71 tagname = None
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72 self.changes[node] = elt
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73 self.parents[child] = [node]
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74 child = node
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75 self.parents[child] = []
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76
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77 def after(self):
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78 self.ui.debug('cleaning up %s\n' % self.tmppath)
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79 shutil.rmtree(self.tmppath, ignore_errors=True)
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80
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81 def xml(self, cmd, **kwargs):
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82 etree = ElementTree()
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83 fp = self._run(cmd, **kwargs)
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84 etree.parse(fp)
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85 self.checkexit(fp.close())
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86 return etree.getroot()
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87
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88 def manifest(self):
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89 man = []
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90 output, status = self.run('show', 'files', no_directories=True,
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91 repodir=self.tmppath)
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92 self.checkexit(status)
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93 for line in output.split('\n'):
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94 path = line[2:]
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95 if path:
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96 man.append(path)
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97 return man
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98
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99 def getheads(self):
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100 return self.parents[None]
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101
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102 def getcommit(self, rev):
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103 elt = self.changes[rev]
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104 date = util.strdate(elt.get('local_date'), '%a %b %d %H:%M:%S %Z %Y')
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105 desc = elt.findtext('name') + '\n' + elt.findtext('comment', '')
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106 return commit(author=elt.get('author'), date=util.datestr(date),
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107 desc=desc.strip(), parents=self.parents[rev])
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108
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109 def pull(self, rev):
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110 output, status = self.run('pull', self.path, all=True,
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111 match='hash %s' % rev,
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112 no_test=True, no_posthook=True,
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113 external_merge='/bin/false',
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114 repodir=self.tmppath)
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115 if status:
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116 if output.find('We have conflicts in') == -1:
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117 self.checkexit(status, output)
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118 output, status = self.run('revert', all=True, repodir=self.tmppath)
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119 self.checkexit(status, output)
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120
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121 def getchanges(self, rev):
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122 copies = {}
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123 changes = []
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124 man = None
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125 for elt in self.changes[rev].find('summary').getchildren():
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126 if elt.tag in ('add_directory', 'remove_directory'):
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127 continue
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128 if elt.tag == 'move':
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129 if man is None:
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130 man = self.manifest()
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131 source, dest = elt.get('from'), elt.get('to')
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132 if source in man:
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133 # File move
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134 changes.append((source, rev))
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135 changes.append((dest, rev))
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136 copies[dest] = source
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137 else:
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138 # Directory move, deduce file moves from manifest
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139 source = source + '/'
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140 for f in man:
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141 if not f.startswith(source):
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142 continue
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143 fdest = dest + '/' + f[len(source):]
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144 changes.append((f, rev))
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145 changes.append((fdest, rev))
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146 copies[fdest] = f
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147 else:
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148 changes.append((elt.text.strip(), rev))
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149 self.pull(rev)
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150 self.lastrev = rev
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151 return sorted(changes), copies
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152
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153 def getfile(self, name, rev):
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154 if rev != self.lastrev:
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155 raise util.Abort(_('internal calling inconsistency'))
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156 return open(os.path.join(self.tmppath, name), 'rb').read()
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157
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158 def getmode(self, name, rev):
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159 mode = os.lstat(os.path.join(self.tmppath, name)).st_mode
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160 return (mode & 0111) and 'x' or ''
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161
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162 def gettags(self):
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163 return self.tags