Mercurial > hg
annotate hgext/convert/filemap.py @ 5535:7501ef26402b
convert: fix svn file:// URL generation under Windows
author | Patrick Mezard <pmezard@gmail.com> |
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date | Sun, 11 Nov 2007 14:17:30 +0100 |
parents | 11d7908a3ea8 |
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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 |
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5 # the GNU General Public License, incorporated herein by reference. |
316 | 6 |
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7 import shlex |
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8 from mercurial.i18n import _ |
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9 from mercurial import util |
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10 from common import SKIPREV |
694 | 11 |
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12 def rpairs(name): |
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13 e = len(name) |
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14 while e != -1: |
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15 yield name[:e], name[e+1:] |
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16 e = name.rfind('/', 0, e) |
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17 |
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18 class filemapper(object): |
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19 '''Map and filter filenames when importing. |
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20 A name can be mapped to itself, a new name, or None (omit from new |
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21 repository).''' |
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22 |
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23 def __init__(self, ui, path=None): |
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24 self.ui = ui |
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25 self.include = {} |
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26 self.exclude = {} |
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27 self.rename = {} |
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28 if path: |
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29 if self.parse(path): |
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30 raise util.Abort(_('errors in filemap')) |
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31 |
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32 def parse(self, path): |
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33 errs = 0 |
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34 def check(name, mapping, listname): |
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35 if name in mapping: |
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36 self.ui.warn(_('%s:%d: %r already in %s list\n') % |
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37 (lex.infile, lex.lineno, name, listname)) |
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38 return 1 |
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39 return 0 |
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40 lex = shlex.shlex(open(path), path, True) |
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41 lex.wordchars += '!@#$%^&*()-=+[]{}|;:,./<>?' |
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42 cmd = lex.get_token() |
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43 while cmd: |
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44 if cmd == 'include': |
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45 name = lex.get_token() |
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46 errs += check(name, self.exclude, 'exclude') |
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47 self.include[name] = name |
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48 elif cmd == 'exclude': |
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49 name = lex.get_token() |
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50 errs += check(name, self.include, 'include') |
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51 errs += check(name, self.rename, 'rename') |
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52 self.exclude[name] = name |
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53 elif cmd == 'rename': |
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54 src = lex.get_token() |
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55 dest = lex.get_token() |
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56 errs += check(src, self.exclude, 'exclude') |
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57 self.rename[src] = dest |
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58 elif cmd == 'source': |
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59 errs += self.parse(lex.get_token()) |
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60 else: |
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61 self.ui.warn(_('%s:%d: unknown directive %r\n') % |
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62 (lex.infile, lex.lineno, cmd)) |
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63 errs += 1 |
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64 cmd = lex.get_token() |
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65 return errs |
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66 |
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67 def lookup(self, name, mapping): |
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68 for pre, suf in rpairs(name): |
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69 try: |
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70 return mapping[pre], pre, suf |
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71 except KeyError, err: |
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72 pass |
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73 return '', name, '' |
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74 |
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75 def __call__(self, name): |
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76 if self.include: |
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77 inc = self.lookup(name, self.include)[0] |
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78 else: |
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79 inc = name |
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80 if self.exclude: |
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81 exc = self.lookup(name, self.exclude)[0] |
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82 else: |
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83 exc = '' |
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84 if not inc or exc: |
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85 return None |
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86 newpre, pre, suf = self.lookup(name, self.rename) |
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87 if newpre: |
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88 if newpre == '.': |
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89 return suf |
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90 if suf: |
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91 return newpre + '/' + suf |
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92 return newpre |
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93 return name |
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94 |
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95 def active(self): |
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96 return bool(self.include or self.exclude or self.rename) |
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97 |
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98 # This class does two additional things compared to a regular source: |
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99 # |
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100 # - Filter and rename files. This is mostly wrapped by the filemapper |
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101 # class above. We hide the original filename in the revision that is |
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102 # returned by getchanges to be able to find things later in getfile |
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103 # and getmode. |
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104 # |
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105 # - Return only revisions that matter for the files we're interested in. |
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106 # This involves rewriting the parents of the original revision to |
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107 # create a graph that is restricted to those revisions. |
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108 # |
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109 # This set of revisions includes not only revisions that directly |
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110 # touch files we're interested in, but also merges that merge two |
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111 # or more interesting revisions. |
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112 |
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113 class filemap_source(object): |
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114 def __init__(self, ui, baseconverter, filemap): |
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115 self.ui = ui |
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116 self.base = baseconverter |
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117 self.filemapper = filemapper(ui, filemap) |
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118 self.commits = {} |
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119 # if a revision rev has parent p in the original revision graph, then |
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120 # rev will have parent self.parentmap[p] in the restricted graph. |
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121 self.parentmap = {} |
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122 # self.wantedancestors[rev] is the set of all ancestors of rev that |
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123 # are in the restricted graph. |
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124 self.wantedancestors = {} |
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125 self.convertedorder = None |
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126 self._rebuilt = False |
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127 self.origparents = {} |
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128 self.children = {} |
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129 self.seenchildren = {} |
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130 |
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131 def setrevmap(self, revmap): |
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132 # rebuild our state to make things restartable |
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133 # |
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134 # To avoid calling getcommit for every revision that has already |
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135 # been converted, we rebuild only the parentmap, delaying the |
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136 # rebuild of wantedancestors until we need it (i.e. until a |
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137 # merge). |
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138 # |
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139 # We assume the order argument lists the revisions in |
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140 # topological order, so that we can infer which revisions were |
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141 # wanted by previous runs. |
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142 self._rebuilt = not revmap |
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143 seen = {SKIPREV: SKIPREV} |
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144 dummyset = util.set() |
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145 converted = [] |
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146 for rev in revmap.order: |
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147 mapped = revmap[rev] |
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148 wanted = mapped not in seen |
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149 if wanted: |
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150 seen[mapped] = rev |
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151 self.parentmap[rev] = rev |
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152 else: |
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153 self.parentmap[rev] = seen[mapped] |
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154 self.wantedancestors[rev] = dummyset |
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155 arg = seen[mapped] |
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156 if arg == SKIPREV: |
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157 arg = None |
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158 converted.append((rev, wanted, arg)) |
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159 self.convertedorder = converted |
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160 return self.base.setrevmap(revmap) |
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161 |
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162 def rebuild(self): |
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163 if self._rebuilt: |
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164 return True |
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165 self._rebuilt = True |
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166 self.parentmap.clear() |
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167 self.wantedancestors.clear() |
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168 self.seenchildren.clear() |
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169 for rev, wanted, arg in self.convertedorder: |
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170 if rev not in self.origparents: |
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171 self.origparents[rev] = self.getcommit(rev).parents |
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172 if arg is not None: |
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173 self.children[arg] = self.children.get(arg, 0) + 1 |
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174 |
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175 for rev, wanted, arg in self.convertedorder: |
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176 parents = self.origparents[rev] |
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177 if wanted: |
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178 self.mark_wanted(rev, parents) |
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179 else: |
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180 self.mark_not_wanted(rev, arg) |
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181 self._discard(arg, *parents) |
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182 |
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183 return True |
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184 |
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185 def getheads(self): |
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186 return self.base.getheads() |
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187 |
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188 def getcommit(self, rev): |
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189 # We want to save a reference to the commit objects to be able |
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190 # to rewrite their parents later on. |
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191 c = self.commits[rev] = self.base.getcommit(rev) |
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192 for p in c.parents: |
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193 self.children[p] = self.children.get(p, 0) + 1 |
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194 return c |
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195 |
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196 def _discard(self, *revs): |
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197 for r in revs: |
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198 if r is None: |
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199 continue |
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200 self.seenchildren[r] = self.seenchildren.get(r, 0) + 1 |
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201 if self.seenchildren[r] == self.children[r]: |
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202 del self.wantedancestors[r] |
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203 del self.parentmap[r] |
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204 del self.seenchildren[r] |
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205 if self._rebuilt: |
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206 del self.children[r] |
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207 |
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208 def wanted(self, rev, i): |
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209 # Return True if we're directly interested in rev. |
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210 # |
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211 # i is an index selecting one of the parents of rev (if rev |
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212 # has no parents, i is None). getchangedfiles will give us |
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213 # the list of files that are different in rev and in the parent |
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214 # indicated by i. If we're interested in any of these files, |
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215 # we're interested in rev. |
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216 try: |
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217 files = self.base.getchangedfiles(rev, i) |
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218 except NotImplementedError: |
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219 raise util.Abort(_("source repository doesn't support --filemap")) |
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220 for f in files: |
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221 if self.filemapper(f): |
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222 return True |
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223 return False |
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224 |
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225 def mark_not_wanted(self, rev, p): |
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226 # Mark rev as not interesting and update data structures. |
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227 |
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228 if p is None: |
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229 # A root revision. Use SKIPREV to indicate that it doesn't |
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230 # map to any revision in the restricted graph. Put SKIPREV |
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231 # in the set of wanted ancestors to simplify code elsewhere |
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232 self.parentmap[rev] = SKIPREV |
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233 self.wantedancestors[rev] = util.set((SKIPREV,)) |
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234 return |
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235 |
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236 # Reuse the data from our parent. |
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237 self.parentmap[rev] = self.parentmap[p] |
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238 self.wantedancestors[rev] = self.wantedancestors[p] |
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239 |
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240 def mark_wanted(self, rev, parents): |
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241 # Mark rev ss wanted and update data structures. |
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242 |
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243 # rev will be in the restricted graph, so children of rev in |
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244 # the original graph should still have rev as a parent in the |
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245 # restricted graph. |
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246 self.parentmap[rev] = rev |
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247 |
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248 # The set of wanted ancestors of rev is the union of the sets |
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249 # of wanted ancestors of its parents. Plus rev itself. |
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250 wrev = util.set() |
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251 for p in parents: |
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252 wrev.update(self.wantedancestors[p]) |
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253 wrev.add(rev) |
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254 self.wantedancestors[rev] = wrev |
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255 |
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256 def getchanges(self, rev): |
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257 parents = self.commits[rev].parents |
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258 if len(parents) > 1: |
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259 self.rebuild() |
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260 |
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261 # To decide whether we're interested in rev we: |
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262 # |
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263 # - calculate what parents rev will have if it turns out we're |
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264 # interested in it. If it's going to have more than 1 parent, |
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265 # we're interested in it. |
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266 # |
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267 # - otherwise, we'll compare it with the single parent we found. |
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268 # If any of the files we're interested in is different in the |
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269 # the two revisions, we're interested in rev. |
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270 |
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271 # A parent p is interesting if its mapped version (self.parentmap[p]): |
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272 # - is not SKIPREV |
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273 # - is still not in the list of parents (we don't want duplicates) |
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274 # - is not an ancestor of the mapped versions of the other parents |
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275 mparents = [] |
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276 wp = None |
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277 for i, p1 in enumerate(parents): |
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278 mp1 = self.parentmap[p1] |
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279 if mp1 == SKIPREV or mp1 in mparents: |
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280 continue |
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281 for p2 in parents: |
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282 if p1 == p2 or mp1 == self.parentmap[p2]: |
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283 continue |
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284 if mp1 in self.wantedancestors[p2]: |
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285 break |
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286 else: |
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287 mparents.append(mp1) |
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288 wp = i |
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289 |
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290 if wp is None and parents: |
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291 wp = 0 |
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292 |
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293 self.origparents[rev] = parents |
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294 |
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295 if len(mparents) < 2 and not self.wanted(rev, wp): |
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296 # We don't want this revision. |
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297 # Update our state and tell the convert process to map this |
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298 # revision to the same revision its parent as mapped to. |
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299 p = None |
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300 if parents: |
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301 p = parents[wp] |
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302 self.mark_not_wanted(rev, p) |
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303 self.convertedorder.append((rev, False, p)) |
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304 self._discard(*parents) |
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305 return self.parentmap[rev] |
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306 |
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307 # We want this revision. |
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308 # Rewrite the parents of the commit object |
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309 self.commits[rev].parents = mparents |
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310 self.mark_wanted(rev, parents) |
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311 self.convertedorder.append((rev, True, None)) |
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312 self._discard(*parents) |
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313 |
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314 # Get the real changes and do the filtering/mapping. |
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315 # To be able to get the files later on in getfile and getmode, |
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316 # we hide the original filename in the rev part of the return |
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317 # value. |
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318 changes, copies = self.base.getchanges(rev) |
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319 newnames = {} |
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320 files = [] |
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321 for f, r in changes: |
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322 newf = self.filemapper(f) |
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323 if newf: |
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324 files.append((newf, (f, r))) |
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325 newnames[f] = newf |
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326 |
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327 ncopies = {} |
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328 for c in copies: |
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329 newc = self.filemapper(c) |
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330 if newc: |
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331 newsource = self.filemapper(copies[c]) |
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332 if newsource: |
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333 ncopies[newc] = newsource |
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334 |
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335 return files, ncopies |
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336 |
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337 def getfile(self, name, rev): |
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338 realname, realrev = rev |
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339 return self.base.getfile(realname, realrev) |
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340 |
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341 def getmode(self, name, rev): |
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342 realname, realrev = rev |
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343 return self.base.getmode(realname, realrev) |
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344 |
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345 def gettags(self): |
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346 return self.base.gettags() |
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347 |
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348 def before(self): |
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349 pass |
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350 |
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351 def after(self): |
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352 pass |