Mercurial > hg
annotate hgext/convert/filemap.py @ 18004:747a2f43d5d9
clfilter: strip logic should be unfiltered
Strip is a "write" operation that needs to be aware of the whole repo's
content before destroying changesets.
Only the low level function is altered. The top level command will still
process its argument filtered (if any filtering is in place).
author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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date | Mon, 08 Oct 2012 17:12:09 +0200 |
parents | e4da793998bf |
children | 42455ebbab9f |
rev | line source |
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1 # Copyright 2007 Bryan O'Sullivan <bos@serpentine.com> |
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2 # Copyright 2007 Alexis S. L. Carvalho <alexis@cecm.usp.br> |
316 | 3 # |
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4 # This software may be used and distributed according to the terms of the |
10263 | 5 # GNU General Public License version 2 or any later version. |
316 | 6 |
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7 import posixpath |
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8 import shlex |
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9 from mercurial.i18n import _ |
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10 from mercurial import util |
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11 from common import SKIPREV, converter_source |
694 | 12 |
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13 def rpairs(name): |
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14 e = len(name) |
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15 while e != -1: |
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16 yield name[:e], name[e + 1:] |
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17 e = name.rfind('/', 0, e) |
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18 yield '.', name |
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19 |
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20 def normalize(path): |
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21 ''' We use posixpath.normpath to support cross-platform path format. |
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22 However, it doesn't handle None input. So we wrap it up. ''' |
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23 if path is None: |
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24 return None |
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25 return posixpath.normpath(path) |
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26 |
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27 class filemapper(object): |
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28 '''Map and filter filenames when importing. |
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29 A name can be mapped to itself, a new name, or None (omit from new |
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30 repository).''' |
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31 |
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32 def __init__(self, ui, path=None): |
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33 self.ui = ui |
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34 self.include = {} |
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35 self.exclude = {} |
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36 self.rename = {} |
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37 if path: |
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38 if self.parse(path): |
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39 raise util.Abort(_('errors in filemap')) |
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40 |
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41 def parse(self, path): |
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42 errs = 0 |
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43 def check(name, mapping, listname): |
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44 if not name: |
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45 self.ui.warn(_('%s:%d: path to %s is missing\n') % |
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46 (lex.infile, lex.lineno, listname)) |
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47 return 1 |
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48 if name in mapping: |
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49 self.ui.warn(_('%s:%d: %r already in %s list\n') % |
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50 (lex.infile, lex.lineno, name, listname)) |
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51 return 1 |
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52 if (name.startswith('/') or |
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53 name.endswith('/') or |
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54 '//' in name): |
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55 self.ui.warn(_('%s:%d: superfluous / in %s %r\n') % |
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56 (lex.infile, lex.lineno, listname, name)) |
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57 return 1 |
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58 return 0 |
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59 lex = shlex.shlex(open(path), path, True) |
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60 lex.wordchars += '!@#$%^&*()-=+[]{}|;:,./<>?' |
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61 cmd = lex.get_token() |
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62 while cmd: |
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63 if cmd == 'include': |
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64 name = normalize(lex.get_token()) |
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65 errs += check(name, self.exclude, 'exclude') |
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66 self.include[name] = name |
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67 elif cmd == 'exclude': |
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68 name = normalize(lex.get_token()) |
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69 errs += check(name, self.include, 'include') |
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70 errs += check(name, self.rename, 'rename') |
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71 self.exclude[name] = name |
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72 elif cmd == 'rename': |
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73 src = normalize(lex.get_token()) |
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74 dest = normalize(lex.get_token()) |
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75 errs += check(src, self.exclude, 'exclude') |
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76 self.rename[src] = dest |
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77 elif cmd == 'source': |
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78 errs += self.parse(normalize(lex.get_token())) |
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79 else: |
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80 self.ui.warn(_('%s:%d: unknown directive %r\n') % |
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81 (lex.infile, lex.lineno, cmd)) |
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82 errs += 1 |
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83 cmd = lex.get_token() |
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84 return errs |
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85 |
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86 def lookup(self, name, mapping): |
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87 name = normalize(name) |
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88 for pre, suf in rpairs(name): |
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89 try: |
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90 return mapping[pre], pre, suf |
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91 except KeyError: |
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92 pass |
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93 return '', name, '' |
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94 |
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95 def __call__(self, name): |
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96 if self.include: |
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97 inc = self.lookup(name, self.include)[0] |
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98 else: |
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99 inc = name |
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100 if self.exclude: |
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101 exc = self.lookup(name, self.exclude)[0] |
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102 else: |
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103 exc = '' |
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104 if (not self.include and exc) or (len(inc) <= len(exc)): |
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105 return None |
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106 newpre, pre, suf = self.lookup(name, self.rename) |
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107 if newpre: |
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108 if newpre == '.': |
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109 return suf |
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110 if suf: |
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111 if newpre.endswith('/'): |
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112 return newpre + suf |
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113 return newpre + '/' + suf |
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114 return newpre |
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115 return name |
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116 |
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117 def active(self): |
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118 return bool(self.include or self.exclude or self.rename) |
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119 |
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120 # This class does two additional things compared to a regular source: |
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121 # |
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122 # - Filter and rename files. This is mostly wrapped by the filemapper |
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123 # class above. We hide the original filename in the revision that is |
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124 # returned by getchanges to be able to find things later in getfile. |
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125 # |
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126 # - Return only revisions that matter for the files we're interested in. |
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127 # This involves rewriting the parents of the original revision to |
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128 # create a graph that is restricted to those revisions. |
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129 # |
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130 # This set of revisions includes not only revisions that directly |
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131 # touch files we're interested in, but also merges that merge two |
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132 # or more interesting revisions. |
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133 |
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134 class filemap_source(converter_source): |
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135 def __init__(self, ui, baseconverter, filemap): |
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136 super(filemap_source, self).__init__(ui) |
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137 self.base = baseconverter |
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138 self.filemapper = filemapper(ui, filemap) |
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139 self.commits = {} |
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140 # if a revision rev has parent p in the original revision graph, then |
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141 # rev will have parent self.parentmap[p] in the restricted graph. |
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142 self.parentmap = {} |
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143 # self.wantedancestors[rev] is the set of all ancestors of rev that |
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144 # are in the restricted graph. |
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145 self.wantedancestors = {} |
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146 self.convertedorder = None |
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147 self._rebuilt = False |
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148 self.origparents = {} |
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149 self.children = {} |
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150 self.seenchildren = {} |
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151 |
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152 def before(self): |
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153 self.base.before() |
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154 |
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155 def after(self): |
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156 self.base.after() |
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157 |
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158 def setrevmap(self, revmap): |
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159 # rebuild our state to make things restartable |
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160 # |
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161 # To avoid calling getcommit for every revision that has already |
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162 # been converted, we rebuild only the parentmap, delaying the |
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163 # rebuild of wantedancestors until we need it (i.e. until a |
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164 # merge). |
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165 # |
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166 # We assume the order argument lists the revisions in |
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167 # topological order, so that we can infer which revisions were |
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168 # wanted by previous runs. |
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169 self._rebuilt = not revmap |
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170 seen = {SKIPREV: SKIPREV} |
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171 dummyset = set() |
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172 converted = [] |
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173 for rev in revmap.order: |
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174 mapped = revmap[rev] |
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175 wanted = mapped not in seen |
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176 if wanted: |
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177 seen[mapped] = rev |
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178 self.parentmap[rev] = rev |
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179 else: |
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180 self.parentmap[rev] = seen[mapped] |
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181 self.wantedancestors[rev] = dummyset |
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182 arg = seen[mapped] |
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183 if arg == SKIPREV: |
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184 arg = None |
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185 converted.append((rev, wanted, arg)) |
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186 self.convertedorder = converted |
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187 return self.base.setrevmap(revmap) |
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188 |
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189 def rebuild(self): |
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190 if self._rebuilt: |
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191 return True |
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192 self._rebuilt = True |
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193 self.parentmap.clear() |
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194 self.wantedancestors.clear() |
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195 self.seenchildren.clear() |
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196 for rev, wanted, arg in self.convertedorder: |
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197 if rev not in self.origparents: |
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198 self.origparents[rev] = self.getcommit(rev).parents |
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199 if arg is not None: |
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200 self.children[arg] = self.children.get(arg, 0) + 1 |
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201 |
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202 for rev, wanted, arg in self.convertedorder: |
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203 parents = self.origparents[rev] |
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204 if wanted: |
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205 self.mark_wanted(rev, parents) |
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206 else: |
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207 self.mark_not_wanted(rev, arg) |
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208 self._discard(arg, *parents) |
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209 |
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210 return True |
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211 |
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212 def getheads(self): |
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213 return self.base.getheads() |
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214 |
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215 def getcommit(self, rev): |
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216 # We want to save a reference to the commit objects to be able |
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217 # to rewrite their parents later on. |
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218 c = self.commits[rev] = self.base.getcommit(rev) |
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219 for p in c.parents: |
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220 self.children[p] = self.children.get(p, 0) + 1 |
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221 return c |
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222 |
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223 def _cachedcommit(self, rev): |
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224 if rev in self.commits: |
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225 return self.commits[rev] |
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226 return self.base.getcommit(rev) |
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227 |
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228 def _discard(self, *revs): |
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229 for r in revs: |
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230 if r is None: |
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231 continue |
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232 self.seenchildren[r] = self.seenchildren.get(r, 0) + 1 |
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233 if self.seenchildren[r] == self.children[r]: |
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234 del self.wantedancestors[r] |
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235 del self.parentmap[r] |
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236 del self.seenchildren[r] |
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237 if self._rebuilt: |
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238 del self.children[r] |
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239 |
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240 def wanted(self, rev, i): |
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241 # Return True if we're directly interested in rev. |
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242 # |
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243 # i is an index selecting one of the parents of rev (if rev |
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244 # has no parents, i is None). getchangedfiles will give us |
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245 # the list of files that are different in rev and in the parent |
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246 # indicated by i. If we're interested in any of these files, |
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247 # we're interested in rev. |
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248 try: |
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249 files = self.base.getchangedfiles(rev, i) |
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250 except NotImplementedError: |
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251 raise util.Abort(_("source repository doesn't support --filemap")) |
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252 for f in files: |
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253 if self.filemapper(f): |
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254 return True |
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255 return False |
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256 |
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257 def mark_not_wanted(self, rev, p): |
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258 # Mark rev as not interesting and update data structures. |
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259 |
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260 if p is None: |
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261 # A root revision. Use SKIPREV to indicate that it doesn't |
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262 # map to any revision in the restricted graph. Put SKIPREV |
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263 # in the set of wanted ancestors to simplify code elsewhere |
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264 self.parentmap[rev] = SKIPREV |
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265 self.wantedancestors[rev] = set((SKIPREV,)) |
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266 return |
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267 |
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268 # Reuse the data from our parent. |
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269 self.parentmap[rev] = self.parentmap[p] |
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270 self.wantedancestors[rev] = self.wantedancestors[p] |
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271 |
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272 def mark_wanted(self, rev, parents): |
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273 # Mark rev ss wanted and update data structures. |
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274 |
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275 # rev will be in the restricted graph, so children of rev in |
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276 # the original graph should still have rev as a parent in the |
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277 # restricted graph. |
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278 self.parentmap[rev] = rev |
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279 |
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280 # The set of wanted ancestors of rev is the union of the sets |
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281 # of wanted ancestors of its parents. Plus rev itself. |
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282 wrev = set() |
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283 for p in parents: |
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284 wrev.update(self.wantedancestors[p]) |
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285 wrev.add(rev) |
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286 self.wantedancestors[rev] = wrev |
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287 |
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288 def getchanges(self, rev): |
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289 parents = self.commits[rev].parents |
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290 if len(parents) > 1: |
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291 self.rebuild() |
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292 |
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293 # To decide whether we're interested in rev we: |
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294 # |
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295 # - calculate what parents rev will have if it turns out we're |
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296 # interested in it. If it's going to have more than 1 parent, |
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297 # we're interested in it. |
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298 # |
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299 # - otherwise, we'll compare it with the single parent we found. |
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300 # If any of the files we're interested in is different in the |
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301 # the two revisions, we're interested in rev. |
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302 |
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303 # A parent p is interesting if its mapped version (self.parentmap[p]): |
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304 # - is not SKIPREV |
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305 # - is still not in the list of parents (we don't want duplicates) |
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306 # - is not an ancestor of the mapped versions of the other parents or |
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307 # there is no parent in the same branch than the current revision. |
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308 mparents = [] |
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309 knownparents = set() |
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310 branch = self.commits[rev].branch |
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311 hasbranchparent = False |
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312 for i, p1 in enumerate(parents): |
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313 mp1 = self.parentmap[p1] |
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314 if mp1 == SKIPREV or mp1 in knownparents: |
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315 continue |
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316 isancestor = util.any(p2 for p2 in parents |
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317 if p1 != p2 and mp1 != self.parentmap[p2] |
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318 and mp1 in self.wantedancestors[p2]) |
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319 if not isancestor and not hasbranchparent and len(parents) > 1: |
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320 # This could be expensive, avoid unnecessary calls. |
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321 if self._cachedcommit(p1).branch == branch: |
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322 hasbranchparent = True |
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323 mparents.append((p1, mp1, i, isancestor)) |
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324 knownparents.add(mp1) |
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325 # Discard parents ancestors of other parents if there is a |
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326 # non-ancestor one on the same branch than current revision. |
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327 if hasbranchparent: |
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328 mparents = [p for p in mparents if not p[3]] |
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329 wp = None |
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330 if mparents: |
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331 wp = max(p[2] for p in mparents) |
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332 mparents = [p[1] for p in mparents] |
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333 elif parents: |
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334 wp = 0 |
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335 |
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336 self.origparents[rev] = parents |
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337 |
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338 closed = False |
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339 if 'close' in self.commits[rev].extra: |
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340 # A branch closing revision is only useful if one of its |
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341 # parents belong to the branch being closed |
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342 pbranches = [self._cachedcommit(p).branch for p in mparents] |
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343 if branch in pbranches: |
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344 closed = True |
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345 |
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346 if len(mparents) < 2 and not closed and not self.wanted(rev, wp): |
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347 # We don't want this revision. |
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348 # Update our state and tell the convert process to map this |
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349 # revision to the same revision its parent as mapped to. |
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350 p = None |
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351 if parents: |
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352 p = parents[wp] |
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353 self.mark_not_wanted(rev, p) |
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354 self.convertedorder.append((rev, False, p)) |
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355 self._discard(*parents) |
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356 return self.parentmap[rev] |
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357 |
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358 # We want this revision. |
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359 # Rewrite the parents of the commit object |
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360 self.commits[rev].parents = mparents |
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361 self.mark_wanted(rev, parents) |
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362 self.convertedorder.append((rev, True, None)) |
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363 self._discard(*parents) |
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364 |
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365 # Get the real changes and do the filtering/mapping. To be |
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366 # able to get the files later on in getfile, we hide the |
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367 # original filename in the rev part of the return value. |
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368 changes, copies = self.base.getchanges(rev) |
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369 files = {} |
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370 for f, r in changes: |
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371 newf = self.filemapper(f) |
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372 if newf and (newf != f or newf not in files): |
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373 files[newf] = (f, r) |
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374 files = sorted(files.items()) |
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375 |
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376 ncopies = {} |
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377 for c in copies: |
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378 newc = self.filemapper(c) |
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379 if newc: |
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380 newsource = self.filemapper(copies[c]) |
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381 if newsource: |
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382 ncopies[newc] = newsource |
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383 |
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384 return files, ncopies |
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385 |
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386 def getfile(self, name, rev): |
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387 realname, realrev = rev |
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388 return self.base.getfile(realname, realrev) |
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389 |
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390 def gettags(self): |
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391 return self.base.gettags() |
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392 |
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393 def hasnativeorder(self): |
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394 return self.base.hasnativeorder() |
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395 |
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396 def lookuprev(self, rev): |
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397 return self.base.lookuprev(rev) |
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398 |
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399 def getbookmarks(self): |
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400 return self.base.getbookmarks() |