Mercurial > hg
annotate hgext/convert/darcs.py @ 5497:f0a3918abd42
convert: fail if an external required tool is not found
author | Patrick Mezard <pmezard@gmail.com> |
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date | Tue, 30 Oct 2007 22:14:15 +0100 |
parents | fbf40ad5a8c2 |
children | 4d38e6970b8c |
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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, checktool |
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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 checktool('darcs') |
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28 |
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29 if ElementTree is None: |
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30 raise util.Abort(_("Python ElementTree module is not available")) |
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31 |
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32 self.path = os.path.realpath(path) |
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33 |
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34 self.lastrev = None |
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35 self.changes = {} |
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36 self.parents = {} |
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37 self.tags = {} |
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38 |
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39 def before(self): |
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40 self.tmppath = tempfile.mkdtemp( |
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41 prefix='convert-' + os.path.basename(self.path) + '-') |
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42 output, status = self.run('init', repodir=self.tmppath) |
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43 self.checkexit(status) |
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44 |
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45 tree = self.xml('changes', '--xml-output', '--summary') |
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46 tagname = None |
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47 child = None |
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48 for elt in tree.findall('patch'): |
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49 node = elt.get('hash') |
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50 name = elt.findtext('name', '') |
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51 if name.startswith('TAG '): |
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52 tagname = name[4:].strip() |
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53 elif tagname is not None: |
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54 self.tags[tagname] = node |
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55 tagname = None |
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56 self.changes[node] = elt |
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57 self.parents[child] = [node] |
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58 child = node |
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59 self.parents[child] = [] |
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60 |
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61 def after(self): |
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62 self.ui.debug('cleaning up %s\n' % self.tmppath) |
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63 shutil.rmtree(self.tmppath, ignore_errors=True) |
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64 |
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65 def _run(self, cmd, *args, **kwargs): |
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66 cmdline = ['darcs', cmd, '--repodir', kwargs.get('repodir', self.path)] |
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67 cmdline += args |
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68 cmdline = [util.shellquote(arg) for arg in cmdline] |
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69 cmdline += ['<', util.nulldev] |
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70 cmdline = util.quotecommand(' '.join(cmdline)) |
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71 self.ui.debug(cmdline, '\n') |
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72 return os.popen(cmdline, 'r') |
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73 |
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74 def run(self, cmd, *args, **kwargs): |
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75 fp = self._run(cmd, *args, **kwargs) |
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76 output = fp.read() |
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77 return output, fp.close() |
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78 |
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79 def checkexit(self, status, output=''): |
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80 if status: |
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81 if output: |
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82 self.ui.warn(_('darcs error:\n')) |
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83 self.ui.warn(output) |
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84 msg = util.explain_exit(status)[0] |
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85 raise util.Abort(_('darcs %s') % msg) |
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86 |
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87 def xml(self, cmd, *opts): |
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88 etree = ElementTree() |
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89 fp = self._run(cmd, *opts) |
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90 etree.parse(fp) |
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91 self.checkexit(fp.close()) |
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92 return etree.getroot() |
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93 |
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94 def getheads(self): |
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95 return self.parents[None] |
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96 |
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97 def getcommit(self, rev): |
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98 elt = self.changes[rev] |
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99 date = util.strdate(elt.get('local_date'), '%a %b %d %H:%M:%S %Z %Y') |
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100 desc = elt.findtext('name') + '\n' + elt.findtext('comment', '') |
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101 return commit(author=elt.get('author'), date=util.datestr(date), |
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102 desc=desc.strip(), parents=self.parents[rev]) |
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103 |
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104 def pull(self, rev): |
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105 output, status = self.run('pull', self.path, '--all', |
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106 '--match', 'hash %s' % rev, |
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107 '--no-test', '--no-posthook', |
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108 '--external-merge', '/bin/false', |
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109 repodir=self.tmppath) |
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110 if status: |
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111 if output.find('We have conflicts in') == -1: |
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112 self.checkexit(status, output) |
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113 output, status = self.run('revert', '--all', repodir=self.tmppath) |
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114 self.checkexit(status, output) |
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115 |
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116 def getchanges(self, rev): |
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117 self.pull(rev) |
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118 copies = {} |
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119 changes = [] |
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120 for elt in self.changes[rev].find('summary').getchildren(): |
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121 if elt.tag in ('add_directory', 'remove_directory'): |
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122 continue |
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123 if elt.tag == 'move': |
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124 changes.append((elt.get('from'), rev)) |
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125 copies[elt.get('from')] = elt.get('to') |
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126 else: |
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127 changes.append((elt.text.strip(), rev)) |
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128 changes.sort() |
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129 self.lastrev = rev |
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130 return changes, copies |
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131 |
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132 def getfile(self, name, rev): |
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133 if rev != self.lastrev: |
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134 raise util.Abort(_('internal calling inconsistency')) |
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135 return open(os.path.join(self.tmppath, name), 'rb').read() |
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136 |
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137 def getmode(self, name, rev): |
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138 mode = os.lstat(os.path.join(self.tmppath, name)).st_mode |
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139 return (mode & 0111) and 'x' or '' |
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140 |
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141 def gettags(self): |
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142 return self.tags |