Mercurial > hg > mercurial-crew-with-dirclash

annotate hgext/convert/darcs.py @ 5461:ab4d2e9f3b97

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convert: svn -- fix 'exists' Previously 'exists' erroneously returned False for empty dirictories. This is wrong since we want to detect even empty 'branches/' or 'tags/'.
author Kirill Smelkov <kirr@landau.phys.spbu.ru>
date Sat, 13 Oct 2007 15:22:03 +0400
parents fbf40ad5a8c2
children
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rev   line source
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1 # darcs support for the convert extension
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2
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3 from common import NoRepo, commit, converter_source
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4 from mercurial.i18n import _
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5 from mercurial import util
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6 import os, shutil, tempfile
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7
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8 # The naming drift of ElementTree is fun!
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9
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10 try: from xml.etree.cElementTree import ElementTree
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11 except ImportError:
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12 try: from xml.etree.ElementTree import ElementTree
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13 except ImportError:
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14 try: from elementtree.cElementTree import ElementTree
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15 except ImportError:
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16 try: from elementtree.ElementTree import ElementTree
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17 except ImportError: ElementTree = None
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18
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19
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20 class darcs_source(converter_source):
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21 def __init__(self, ui, path, rev=None):
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22 super(darcs_source, self).__init__(ui, path, rev=rev)
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23
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24 if not os.path.exists(os.path.join(path, '_darcs', 'inventory')):
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25 raise NoRepo("couldn't open darcs repo %s" % path)
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26
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27 if ElementTree is None:
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28 raise util.Abort(_("Python ElementTree module is not available"))
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29
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30 self.path = os.path.realpath(path)
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31
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32 self.lastrev = None
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33 self.changes = {}
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34 self.parents = {}
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35 self.tags = {}
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36
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37 def before(self):
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38 self.tmppath = tempfile.mkdtemp(
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39 prefix='convert-' + os.path.basename(self.path) + '-')
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40 output, status = self.run('init', repodir=self.tmppath)
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41 self.checkexit(status)
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42
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43 tree = self.xml('changes', '--xml-output', '--summary')
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44 tagname = None
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45 child = None
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46 for elt in tree.findall('patch'):
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47 node = elt.get('hash')
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48 name = elt.findtext('name', '')
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49 if name.startswith('TAG '):
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50 tagname = name[4:].strip()
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51 elif tagname is not None:
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52 self.tags[tagname] = node
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53 tagname = None
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54 self.changes[node] = elt
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55 self.parents[child] = [node]
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56 child = node
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57 self.parents[child] = []
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58
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59 def after(self):
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60 self.ui.debug('cleaning up %s\n' % self.tmppath)
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61 shutil.rmtree(self.tmppath, ignore_errors=True)
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62
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63 def _run(self, cmd, *args, **kwargs):
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64 cmdline = ['darcs', cmd, '--repodir', kwargs.get('repodir', self.path)]
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65 cmdline += args
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66 cmdline = [util.shellquote(arg) for arg in cmdline]
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67 cmdline += ['<', util.nulldev]
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68 cmdline = util.quotecommand(' '.join(cmdline))
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69 self.ui.debug(cmdline, '\n')
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70 return os.popen(cmdline, 'r')
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71
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72 def run(self, cmd, *args, **kwargs):
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73 fp = self._run(cmd, *args, **kwargs)
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74 output = fp.read()
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75 return output, fp.close()
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76
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77 def checkexit(self, status, output=''):
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78 if status:
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79 if output:
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80 self.ui.warn(_('darcs error:\n'))
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81 self.ui.warn(output)
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82 msg = util.explain_exit(status)[0]
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83 raise util.Abort(_('darcs %s') % msg)
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84
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85 def xml(self, cmd, *opts):
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86 etree = ElementTree()
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87 fp = self._run(cmd, *opts)
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88 etree.parse(fp)
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89 self.checkexit(fp.close())
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90 return etree.getroot()
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91
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92 def getheads(self):
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93 return self.parents[None]
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94
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95 def getcommit(self, rev):
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96 elt = self.changes[rev]
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97 date = util.strdate(elt.get('local_date'), '%a %b %d %H:%M:%S %Z %Y')
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98 desc = elt.findtext('name') + '\n' + elt.findtext('comment', '')
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99 return commit(author=elt.get('author'), date=util.datestr(date),
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100 desc=desc.strip(), parents=self.parents[rev])
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101
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102 def pull(self, rev):
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103 output, status = self.run('pull', self.path, '--all',
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104 '--match', 'hash %s' % rev,
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105 '--no-test', '--no-posthook',
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106 '--external-merge', '/bin/false',
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107 repodir=self.tmppath)
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108 if status:
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109 if output.find('We have conflicts in') == -1:
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110 self.checkexit(status, output)
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111 output, status = self.run('revert', '--all', repodir=self.tmppath)
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112 self.checkexit(status, output)
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113
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114 def getchanges(self, rev):
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115 self.pull(rev)
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116 copies = {}
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117 changes = []
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118 for elt in self.changes[rev].find('summary').getchildren():
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119 if elt.tag in ('add_directory', 'remove_directory'):
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120 continue
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121 if elt.tag == 'move':
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122 changes.append((elt.get('from'), rev))
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123 copies[elt.get('from')] = elt.get('to')
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124 else:
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125 changes.append((elt.text.strip(), rev))
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126 changes.sort()
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127 self.lastrev = rev
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128 return changes, copies
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129
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130 def getfile(self, name, rev):
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131 if rev != self.lastrev:
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132 raise util.Abort(_('internal calling inconsistency'))
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133 return open(os.path.join(self.tmppath, name), 'rb').read()
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134
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135 def getmode(self, name, rev):
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136 mode = os.lstat(os.path.join(self.tmppath, name)).st_mode
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137 return (mode & 0111) and 'x' or ''
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138
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139 def gettags(self):
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140 return self.tags