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1 | 1 | # filelog.py - file history class for mercurial |
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2 | 2 | # |
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3 | 3 | # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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4 | 4 | # |
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5 | 5 | # This software may be used and distributed according to the terms of the |
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6 | 6 | # GNU General Public License version 2 or any later version. |
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7 | 7 | |
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8 | 8 | from __future__ import absolute_import |
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9 | 9 | |
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10 | 10 | from . import ( |
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11 | 11 | error, |
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12 | 12 | repository, |
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13 | 13 | revlog, |
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14 | 14 | ) |
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15 | 15 | from .utils import ( |
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16 | 16 | interfaceutil, |
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17 | 17 | ) |
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18 | 18 | |
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19 | 19 | @interfaceutil.implementer(repository.ifilestorage) |
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20 | 20 | class filelog(object): |
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21 | 21 | def __init__(self, opener, path): |
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22 | 22 | self._revlog = revlog.revlog(opener, |
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23 | 23 | '/'.join(('data', path + '.i')), |
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24 | 24 | censorable=True) |
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25 | 25 | # full name of the user visible file, relative to the repository root |
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26 | 26 | self.filename = path |
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27 | 27 | self.index = self._revlog.index |
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28 | 28 | self.version = self._revlog.version |
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29 | 29 | self.storedeltachains = self._revlog.storedeltachains |
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30 | 30 | self._generaldelta = self._revlog._generaldelta |
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31 | 31 | |
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32 | 32 | def __len__(self): |
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33 | 33 | return len(self._revlog) |
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34 | 34 | |
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35 | 35 | def __iter__(self): |
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36 | 36 | return self._revlog.__iter__() |
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37 | 37 | |
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38 | 38 | def revs(self, start=0, stop=None): |
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39 | 39 | return self._revlog.revs(start=start, stop=stop) |
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40 | 40 | |
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41 | 41 | def parents(self, node): |
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42 | 42 | return self._revlog.parents(node) |
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43 | 43 | |
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44 | 44 | def parentrevs(self, rev): |
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45 | 45 | return self._revlog.parentrevs(rev) |
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46 | 46 | |
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47 | 47 | def rev(self, node): |
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48 | 48 | return self._revlog.rev(node) |
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49 | 49 | |
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50 | 50 | def node(self, rev): |
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51 | 51 | return self._revlog.node(rev) |
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52 | 52 | |
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53 | 53 | def lookup(self, node): |
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54 | 54 | return self._revlog.lookup(node) |
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55 | 55 | |
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56 | 56 | def linkrev(self, rev): |
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57 | 57 | return self._revlog.linkrev(rev) |
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58 | 58 | |
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59 | 59 | def flags(self, rev): |
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60 | 60 | return self._revlog.flags(rev) |
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61 | 61 | |
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62 | 62 | def commonancestorsheads(self, node1, node2): |
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63 | 63 | return self._revlog.commonancestorsheads(node1, node2) |
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64 | 64 | |
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65 | 65 | def descendants(self, revs): |
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66 | 66 | return self._revlog.descendants(revs) |
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67 | 67 | |
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68 | 68 | def headrevs(self): |
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69 | 69 | return self._revlog.headrevs() |
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70 | 70 | |
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71 | 71 | def heads(self, start=None, stop=None): |
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72 | 72 | return self._revlog.heads(start, stop) |
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73 | 73 | |
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74 | 74 | def children(self, node): |
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75 | 75 | return self._revlog.children(node) |
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76 | 76 | |
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77 | 77 | def deltaparent(self, rev): |
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78 | 78 | return self._revlog.deltaparent(rev) |
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79 | 79 | |
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80 | 80 | def candelta(self, baserev, rev): |
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81 | 81 | return self._revlog.candelta(baserev, rev) |
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82 | 82 | |
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83 | 83 | def iscensored(self, rev): |
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84 | 84 | return self._revlog.iscensored(rev) |
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85 | 85 | |
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86 | 86 | def rawsize(self, rev): |
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87 | 87 | return self._revlog.rawsize(rev) |
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88 | 88 | |
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89 | 89 | def checkhash(self, text, node, p1=None, p2=None, rev=None): |
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90 | 90 | return self._revlog.checkhash(text, node, p1=p1, p2=p2, rev=rev) |
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91 | 91 | |
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92 | 92 | def revision(self, node, _df=None, raw=False): |
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93 | 93 | return self._revlog.revision(node, _df=_df, raw=raw) |
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94 | 94 | |
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95 | 95 | def revdiff(self, rev1, rev2): |
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96 | 96 | return self._revlog.revdiff(rev1, rev2) |
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97 | 97 | |
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98 | 98 | def addrevision(self, revisiondata, transaction, linkrev, p1, p2, |
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99 | 99 | node=None, flags=revlog.REVIDX_DEFAULT_FLAGS, |
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100 | 100 | cachedelta=None): |
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101 | 101 | return self._revlog.addrevision(revisiondata, transaction, linkrev, |
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102 | 102 | p1, p2, node=node, flags=flags, |
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103 | 103 | cachedelta=cachedelta) |
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104 | 104 | |
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105 | 105 | def addgroup(self, deltas, linkmapper, transaction, addrevisioncb=None): |
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106 | 106 | return self._revlog.addgroup(deltas, linkmapper, transaction, |
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107 | 107 | addrevisioncb=addrevisioncb) |
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108 | 108 | |
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109 | 109 | def getstrippoint(self, minlink): |
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110 | 110 | return self._revlog.getstrippoint(minlink) |
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111 | 111 | |
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112 | 112 | def strip(self, minlink, transaction): |
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113 | 113 | return self._revlog.strip(minlink, transaction) |
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114 | 114 | |
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115 | 115 | def files(self): |
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116 | 116 | return self._revlog.files() |
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117 | 117 | |
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118 | 118 | def checksize(self): |
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119 | 119 | return self._revlog.checksize() |
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120 | 120 | |
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121 | 121 | def read(self, node): |
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122 | 122 | t = self.revision(node) |
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123 | 123 | if not t.startswith('\1\n'): |
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124 | 124 | return t |
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125 | 125 | s = t.index('\1\n', 2) |
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126 | 126 | return t[s + 2:] |
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127 | 127 | |
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128 | 128 | def add(self, text, meta, transaction, link, p1=None, p2=None): |
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129 | 129 | if meta or text.startswith('\1\n'): |
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130 | 130 | text = revlog.packmeta(meta, text) |
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131 | 131 | return self.addrevision(text, transaction, link, p1, p2) |
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132 | 132 | |
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133 | 133 | def renamed(self, node): |
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134 | 134 | if self.parents(node)[0] != revlog.nullid: |
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135 | 135 | return False |
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136 | 136 | t = self.revision(node) |
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137 | 137 | m = revlog.parsemeta(t)[0] |
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138 | if m and "copy" in m: | |
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138 | # copy and copyrev occur in pairs. In rare cases due to bugs, | |
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139 | # one can occur without the other. | |
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140 | if m and "copy" in m and "copyrev" in m: | |
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139 | 141 | return (m["copy"], revlog.bin(m["copyrev"])) |
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140 | 142 | return False |
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141 | 143 | |
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142 | 144 | def size(self, rev): |
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143 | 145 | """return the size of a given revision""" |
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144 | 146 | |
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145 | 147 | # for revisions with renames, we have to go the slow way |
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146 | 148 | node = self.node(rev) |
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147 | 149 | if self.renamed(node): |
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148 | 150 | return len(self.read(node)) |
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149 | 151 | if self.iscensored(rev): |
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150 | 152 | return 0 |
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151 | 153 | |
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152 | 154 | # XXX if self.read(node).startswith("\1\n"), this returns (size+4) |
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153 | 155 | return self._revlog.size(rev) |
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154 | 156 | |
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155 | 157 | def cmp(self, node, text): |
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156 | 158 | """compare text with a given file revision |
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157 | 159 | |
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158 | 160 | returns True if text is different than what is stored. |
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159 | 161 | """ |
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160 | 162 | |
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161 | 163 | t = text |
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162 | 164 | if text.startswith('\1\n'): |
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163 | 165 | t = '\1\n\1\n' + text |
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164 | 166 | |
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165 | 167 | samehashes = not self._revlog.cmp(node, t) |
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166 | 168 | if samehashes: |
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167 | 169 | return False |
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168 | 170 | |
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169 | 171 | # censored files compare against the empty file |
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170 | 172 | if self.iscensored(self.rev(node)): |
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171 | 173 | return text != '' |
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172 | 174 | |
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173 | 175 | # renaming a file produces a different hash, even if the data |
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174 | 176 | # remains unchanged. Check if it's the case (slow): |
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175 | 177 | if self.renamed(node): |
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176 | 178 | t2 = self.read(node) |
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177 | 179 | return t2 != text |
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178 | 180 | |
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179 | 181 | return True |
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180 | 182 | |
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181 | 183 | @property |
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182 | 184 | def filename(self): |
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183 | 185 | return self._revlog.filename |
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184 | 186 | |
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185 | 187 | @filename.setter |
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186 | 188 | def filename(self, value): |
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187 | 189 | self._revlog.filename = value |
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188 | 190 | |
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189 | 191 | # TODO these aren't part of the interface and aren't internal methods. |
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190 | 192 | # Callers should be fixed to not use them. |
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191 | 193 | @property |
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192 | 194 | def indexfile(self): |
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193 | 195 | return self._revlog.indexfile |
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194 | 196 | |
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195 | 197 | @indexfile.setter |
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196 | 198 | def indexfile(self, value): |
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197 | 199 | self._revlog.indexfile = value |
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198 | 200 | |
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199 | 201 | @property |
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200 | 202 | def datafile(self): |
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201 | 203 | return self._revlog.datafile |
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202 | 204 | |
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203 | 205 | @property |
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204 | 206 | def opener(self): |
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205 | 207 | return self._revlog.opener |
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206 | 208 | |
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207 | 209 | @property |
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208 | 210 | def _lazydeltabase(self): |
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209 | 211 | return self._revlog._lazydeltabase |
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210 | 212 | |
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211 | 213 | @_lazydeltabase.setter |
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212 | 214 | def _lazydeltabase(self, value): |
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213 | 215 | self._revlog._lazydeltabase = value |
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214 | 216 | |
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215 | 217 | @property |
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216 | 218 | def _aggressivemergedeltas(self): |
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217 | 219 | return self._revlog._aggressivemergedeltas |
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218 | 220 | |
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219 | 221 | @_aggressivemergedeltas.setter |
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220 | 222 | def _aggressivemergedeltas(self, value): |
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221 | 223 | self._revlog._aggressivemergedeltas = value |
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222 | 224 | |
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223 | 225 | @property |
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224 | 226 | def _inline(self): |
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225 | 227 | return self._revlog._inline |
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226 | 228 | |
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227 | 229 | @property |
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228 | 230 | def _withsparseread(self): |
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229 | 231 | return getattr(self._revlog, '_withsparseread', False) |
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230 | 232 | |
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231 | 233 | @property |
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232 | 234 | def _srmingapsize(self): |
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233 | 235 | return self._revlog._srmingapsize |
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234 | 236 | |
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235 | 237 | @property |
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236 | 238 | def _srdensitythreshold(self): |
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237 | 239 | return self._revlog._srdensitythreshold |
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238 | 240 | |
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239 | 241 | def _deltachain(self, rev, stoprev=None): |
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240 | 242 | return self._revlog._deltachain(rev, stoprev) |
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241 | 243 | |
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242 | 244 | def chainbase(self, rev): |
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243 | 245 | return self._revlog.chainbase(rev) |
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244 | 246 | |
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245 | 247 | def chainlen(self, rev): |
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246 | 248 | return self._revlog.chainlen(rev) |
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247 | 249 | |
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248 | 250 | def clone(self, tr, destrevlog, **kwargs): |
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249 | 251 | if not isinstance(destrevlog, filelog): |
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250 | 252 | raise error.ProgrammingError('expected filelog to clone()') |
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251 | 253 | |
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252 | 254 | return self._revlog.clone(tr, destrevlog._revlog, **kwargs) |
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253 | 255 | |
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254 | 256 | def start(self, rev): |
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255 | 257 | return self._revlog.start(rev) |
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256 | 258 | |
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257 | 259 | def end(self, rev): |
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258 | 260 | return self._revlog.end(rev) |
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259 | 261 | |
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260 | 262 | def length(self, rev): |
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261 | 263 | return self._revlog.length(rev) |
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262 | 264 | |
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263 | 265 | def compress(self, data): |
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264 | 266 | return self._revlog.compress(data) |
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265 | 267 | |
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266 | 268 | def _addrevision(self, *args, **kwargs): |
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267 | 269 | return self._revlog._addrevision(*args, **kwargs) |
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