Mercurial > hgsubversion

annotate hgsubversion/maps.py @ 408:f137231f9d30

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extract the revmap support into a separate dict-like class
author Dirkjan Ochtman <dirkjan@ochtman.nl>
date Wed, 10 Jun 2009 15:45:20 +0200
parents 27e9fea5d114
children d4615986e1db
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1 ''' Module for self-contained maps. '''
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2
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3 import os
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4 from mercurial import util as hgutil
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5 from mercurial import node
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6
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7 class AuthorMap(dict):
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8 '''A mapping from Subversion-style authors to Mercurial-style
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9 authors, and back. The data is stored persistently on disk.
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10
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11 If the 'hgsubversion.defaultauthors' configuration option is set to false,
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12 attempting to obtain an unknown author will fail with an Abort.
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13 '''
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14
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15 def __init__(self, ui, path, defaulthost=None):
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16 '''Initialise a new AuthorMap.
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17
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18 The ui argument is used to print diagnostic messages.
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19
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20 The path argument is the location of the backing store,
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21 typically .hg/authormap.
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22 '''
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23 self.ui = ui
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24 self.path = path
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25 if defaulthost:
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26 self.defaulthost = '@%s' % defaulthost.lstrip('@')
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27 else:
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28 self.defaulthost = ''
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29 self.super = super(AuthorMap, self)
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30 self.super.__init__()
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31 self.load(path)
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32
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33 def load(self, path):
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34 ''' Load mappings from a file at the specified path. '''
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35 if not os.path.exists(path):
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36 return
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37 self.ui.note('reading authormap from %s\n' % path)
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38 f = open(path, 'r')
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39 for number, line in enumerate(f):
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40
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41 line = line.split('#')[0]
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42 if not line.strip():
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43 continue
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44
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45 try:
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46 src, dst = line.split('=', 1)
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47 except (IndexError, ValueError):
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48 msg = 'ignoring line %i in author map %s: %s\n'
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49 self.ui.warn(msg % (number, path, line.rstrip()))
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50 continue
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51
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52 src = src.strip()
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53 dst = dst.strip()
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54 if src in self and dst != self[src]:
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55 msg = 'overriding author: "%s" to "%s" (%s)\n'
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56 self.ui.warn(msg % (self[src], dst, src))
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57 else:
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58 self[src] = dst
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59
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60 f.close()
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61
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62 def __setitem__(self, key, value):
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63 ''' Similar to dict.__setitem__, but also updates the new mapping in the
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64 backing store. '''
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65 self.super.__setitem__(key, value)
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66 self.ui.debug('adding author %s to author map\n' % self.path)
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67 f = open(self.path, 'w+')
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68 for k, v in self.iteritems():
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69 f.write("%s=%s\n" % (k, v))
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70 f.close()
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71
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72 def __getitem__(self, author):
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73 ''' Similar to dict.__getitem__, except in case of an unknown author.
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74 In such cases, a new value is generated and added to the dictionary
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75 as well as the backing store. '''
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76 if author in self:
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77 result = self.super.__getitem__(author)
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78 elif self.ui.configbool('hgsubversion', 'defaultauthors', True):
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79 self[author] = result = '%s%s' % (author, self.defaulthost)
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80 msg = 'substituting author "%s" for default "%s"\n'
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81 self.ui.note(msg % (author, result))
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82 else:
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83 msg = 'author %s has no entry in the author map!'
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84 raise hgutil.Abort(msg % author)
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85 self.ui.debug('mapping author "%s" to "%s"\n' % (author, result))
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86 return result
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87
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88 def reverselookup(self, author):
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89 for svnauthor, hgauthor in self.iteritems():
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90 if author == hgauthor:
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91 return svnauthor
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92 else:
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93 # Mercurial incorrectly splits at e.g. '.', so we roll our own.
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94 return author.rsplit('@', 1)[0]
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95
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96
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97 class RevMap(dict):
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98
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99 VERSION = 1
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100
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101 def __init__(self, repo):
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102 dict.__init__(self)
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103 self.path = os.path.join(repo.path, 'svn', 'rev_map')
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104 if os.path.isfile(self.path):
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105 self._load()
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106 else:
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107 self._write()
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108
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109 def _load(self):
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110 f = open(self.path)
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111 ver = int(f.readline())
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112 if ver != self.VERSION:
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113 print 'revmap too new -- please upgrade'
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114 raise NotImplementedError
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115 for l in f:
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116 revnum, hash, branch = l.split(' ', 2)
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117 if branch == '\n':
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118 branch = None
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119 else:
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120 branch = branch[:-1]
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121 dict.__setitem__(self, (int(revnum), branch), node.bin(hash))
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122 f.close()
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123
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124 def _write(self):
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125 f = open(self.path, 'w')
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126 f.write('%s\n' % self.VERSION)
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127 f.flush()
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128 f.close()
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129
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130 def __setitem__(self, key, hash):
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131 revnum, branch = key
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132 f = open(self.path, 'a')
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133 b = branch or ''
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134 f.write(str(revnum) + ' ' + node.hex(hash) + ' ' + b + '\n')
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135 f.flush()
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136 f.close()
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137 dict.__setitem__(self, (revnum, branch), hash)