annotate hgext/remotefilelog/historypack.py @ 44452:9d2b2df2c2ba

cleanup: run pyupgrade on our source tree to clean up varying things Built with: hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**" - hgext/fsmonitor/pywatchman/**' | xargs pyupgrade --keep-percent-format --keep-extraneous-parens and then blackened. pyupgrade comes from https://github.com/asottile/pyupgrade with a patch to let me preserve extraneous parens (which we use for marking strings that shouldn't be translated), and lets us clean up a bunch of idioms that have cruftily accumulated over the years. # skip-blame no-op automated code cleanups Differential Revision: https://phab.mercurial-scm.org/D8255
author Augie Fackler <augie@google.com>
date Fri, 06 Mar 2020 13:27:41 -0500
parents 2d49482d0dd4
children d55b71393907
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1 from __future__ import absolute_import
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2
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3 import struct
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4
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5 from mercurial.node import hex, nullid
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6 from mercurial import (
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7 pycompat,
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8 util,
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9 )
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10 from mercurial.utils import hashutil
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11 from . import (
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12 basepack,
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13 constants,
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14 shallowutil,
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15 )
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16
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17 # (filename hash, offset, size)
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18 INDEXFORMAT2 = b'!20sQQII'
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19 INDEXENTRYLENGTH2 = struct.calcsize(INDEXFORMAT2)
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20 NODELENGTH = 20
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21
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22 NODEINDEXFORMAT = b'!20sQ'
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23 NODEINDEXENTRYLENGTH = struct.calcsize(NODEINDEXFORMAT)
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24
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25 # (node, p1, p2, linknode)
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26 PACKFORMAT = b"!20s20s20s20sH"
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27 PACKENTRYLENGTH = 82
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28
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29 ENTRYCOUNTSIZE = 4
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30
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31 INDEXSUFFIX = b'.histidx'
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32 PACKSUFFIX = b'.histpack'
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33
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34 ANC_NODE = 0
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35 ANC_P1NODE = 1
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36 ANC_P2NODE = 2
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37 ANC_LINKNODE = 3
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38 ANC_COPYFROM = 4
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39
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40
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41 class historypackstore(basepack.basepackstore):
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42 INDEXSUFFIX = INDEXSUFFIX
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43 PACKSUFFIX = PACKSUFFIX
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44
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45 def getpack(self, path):
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46 return historypack(path)
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47
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48 def getancestors(self, name, node, known=None):
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49 for pack in self.packs:
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50 try:
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51 return pack.getancestors(name, node, known=known)
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52 except KeyError:
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53 pass
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54
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55 for pack in self.refresh():
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56 try:
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57 return pack.getancestors(name, node, known=known)
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58 except KeyError:
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59 pass
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60
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61 raise KeyError((name, node))
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62
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63 def getnodeinfo(self, name, node):
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64 for pack in self.packs:
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65 try:
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66 return pack.getnodeinfo(name, node)
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67 except KeyError:
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68 pass
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69
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70 for pack in self.refresh():
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71 try:
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72 return pack.getnodeinfo(name, node)
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73 except KeyError:
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74 pass
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75
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76 raise KeyError((name, node))
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77
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78 def add(self, filename, node, p1, p2, linknode, copyfrom):
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79 raise RuntimeError(
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80 b"cannot add to historypackstore (%s:%s)" % (filename, hex(node))
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81 )
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82
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83
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84 class historypack(basepack.basepack):
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85 INDEXSUFFIX = INDEXSUFFIX
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86 PACKSUFFIX = PACKSUFFIX
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87
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88 SUPPORTED_VERSIONS = [2]
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89
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90 def __init__(self, path):
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91 super(historypack, self).__init__(path)
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92 self.INDEXFORMAT = INDEXFORMAT2
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93 self.INDEXENTRYLENGTH = INDEXENTRYLENGTH2
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94
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95 def getmissing(self, keys):
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96 missing = []
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97 for name, node in keys:
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98 try:
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99 self._findnode(name, node)
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100 except KeyError:
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101 missing.append((name, node))
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102
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103 return missing
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104
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105 def getancestors(self, name, node, known=None):
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106 """Returns as many ancestors as we're aware of.
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107
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108 return value: {
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109 node: (p1, p2, linknode, copyfrom),
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110 ...
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111 }
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112 """
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113 if known and node in known:
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114 return []
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115
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116 ancestors = self._getancestors(name, node, known=known)
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117 results = {}
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118 for ancnode, p1, p2, linknode, copyfrom in ancestors:
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119 results[ancnode] = (p1, p2, linknode, copyfrom)
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120
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121 if not results:
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122 raise KeyError((name, node))
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123 return results
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124
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125 def getnodeinfo(self, name, node):
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126 # Drop the node from the tuple before returning, since the result should
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127 # just be (p1, p2, linknode, copyfrom)
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128 return self._findnode(name, node)[1:]
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129
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130 def _getancestors(self, name, node, known=None):
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131 if known is None:
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132 known = set()
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133 section = self._findsection(name)
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134 filename, offset, size, nodeindexoffset, nodeindexsize = section
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135 pending = {node}
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136 o = 0
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137 while o < size:
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138 if not pending:
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139 break
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140 entry, copyfrom = self._readentry(offset + o)
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141 o += PACKENTRYLENGTH
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142 if copyfrom:
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143 o += len(copyfrom)
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144
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145 ancnode = entry[ANC_NODE]
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146 if ancnode in pending:
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147 pending.remove(ancnode)
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148 p1node = entry[ANC_P1NODE]
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149 p2node = entry[ANC_P2NODE]
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150 if p1node != nullid and p1node not in known:
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151 pending.add(p1node)
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152 if p2node != nullid and p2node not in known:
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153 pending.add(p2node)
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154
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155 yield (ancnode, p1node, p2node, entry[ANC_LINKNODE], copyfrom)
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156
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157 def _readentry(self, offset):
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158 data = self._data
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159 entry = struct.unpack(
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160 PACKFORMAT, data[offset : offset + PACKENTRYLENGTH]
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161 )
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162 copyfrom = None
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163 copyfromlen = entry[ANC_COPYFROM]
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164 if copyfromlen != 0:
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165 offset += PACKENTRYLENGTH
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166 copyfrom = data[offset : offset + copyfromlen]
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167 return entry, copyfrom
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168
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169 def add(self, filename, node, p1, p2, linknode, copyfrom):
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170 raise RuntimeError(
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171 b"cannot add to historypack (%s:%s)" % (filename, hex(node))
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172 )
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173
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174 def _findnode(self, name, node):
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175 if self.VERSION == 0:
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176 ancestors = self._getancestors(name, node)
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177 for ancnode, p1node, p2node, linknode, copyfrom in ancestors:
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178 if ancnode == node:
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179 return (ancnode, p1node, p2node, linknode, copyfrom)
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180 else:
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181 section = self._findsection(name)
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182 nodeindexoffset, nodeindexsize = section[3:]
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183 entry = self._bisect(
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184 node,
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185 nodeindexoffset,
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186 nodeindexoffset + nodeindexsize,
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187 NODEINDEXENTRYLENGTH,
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188 )
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189 if entry is not None:
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190 node, offset = struct.unpack(NODEINDEXFORMAT, entry)
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191 entry, copyfrom = self._readentry(offset)
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192 # Drop the copyfromlen from the end of entry, and replace it
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193 # with the copyfrom string.
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194 return entry[:4] + (copyfrom,)
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195
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196 raise KeyError(b"unable to find history for %s:%s" % (name, hex(node)))
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197
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198 def _findsection(self, name):
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199 params = self.params
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200 namehash = hashutil.sha1(name).digest()
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201 fanoutkey = struct.unpack(
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202 params.fanoutstruct, namehash[: params.fanoutprefix]
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203 )[0]
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204 fanout = self._fanouttable
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205
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206 start = fanout[fanoutkey] + params.indexstart
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207 indexend = self._indexend
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208
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209 for i in pycompat.xrange(fanoutkey + 1, params.fanoutcount):
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210 end = fanout[i] + params.indexstart
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211 if end != start:
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212 break
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213 else:
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214 end = indexend
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215
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216 entry = self._bisect(namehash, start, end, self.INDEXENTRYLENGTH)
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217 if not entry:
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218 raise KeyError(name)
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219
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220 rawentry = struct.unpack(self.INDEXFORMAT, entry)
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221 x, offset, size, nodeindexoffset, nodeindexsize = rawentry
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222 rawnamelen = self._index[
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223 nodeindexoffset : nodeindexoffset + constants.FILENAMESIZE
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224 ]
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225 actualnamelen = struct.unpack(b'!H', rawnamelen)[0]
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226 nodeindexoffset += constants.FILENAMESIZE
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227 actualname = self._index[
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228 nodeindexoffset : nodeindexoffset + actualnamelen
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229 ]
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230 if actualname != name:
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231 raise KeyError(
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232 b"found file name %s when looking for %s" % (actualname, name)
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233 )
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234 nodeindexoffset += actualnamelen
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235
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diff changeset
236 filenamelength = struct.unpack(
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237 b'!H', self._data[offset : offset + constants.FILENAMESIZE]
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238 )[0]
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diff changeset
239 offset += constants.FILENAMESIZE
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240
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241 actualname = self._data[offset : offset + filenamelength]
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242 offset += filenamelength
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243
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244 if name != actualname:
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245 raise KeyError(
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246 b"found file name %s when looking for %s" % (actualname, name)
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247 )
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248
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249 # Skip entry list size
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250 offset += ENTRYCOUNTSIZE
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251
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diff changeset
252 nodelistoffset = offset
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253 nodelistsize = (
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254 size - constants.FILENAMESIZE - filenamelength - ENTRYCOUNTSIZE
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255 )
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256 return (
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257 name,
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258 nodelistoffset,
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259 nodelistsize,
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260 nodeindexoffset,
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261 nodeindexsize,
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262 )
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263
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264 def _bisect(self, node, start, end, entrylen):
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265 # Bisect between start and end to find node
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266 origstart = start
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267 startnode = self._index[start : start + NODELENGTH]
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268 endnode = self._index[end : end + NODELENGTH]
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269
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270 if startnode == node:
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271 return self._index[start : start + entrylen]
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272 elif endnode == node:
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273 return self._index[end : end + entrylen]
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274 else:
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275 while start < end - entrylen:
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276 mid = start + (end - start) // 2
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277 mid = mid - ((mid - origstart) % entrylen)
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278 midnode = self._index[mid : mid + NODELENGTH]
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279 if midnode == node:
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280 return self._index[mid : mid + entrylen]
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281 if node > midnode:
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282 start = mid
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283 elif node < midnode:
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284 end = mid
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285 return None
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286
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287 def markledger(self, ledger, options=None):
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288 for filename, node in self:
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289 ledger.markhistoryentry(self, filename, node)
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290
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291 def cleanup(self, ledger):
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292 entries = ledger.sources.get(self, [])
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293 allkeys = set(self)
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294 repackedkeys = {
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295 (e.filename, e.node) for e in entries if e.historyrepacked
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296 }
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297
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298 if len(allkeys - repackedkeys) == 0:
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299 if self.path not in ledger.created:
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300 util.unlinkpath(self.indexpath, ignoremissing=True)
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301 util.unlinkpath(self.packpath, ignoremissing=True)
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302
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303 def __iter__(self):
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304 for f, n, x, x, x, x in self.iterentries():
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305 yield f, n
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306
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307 def iterentries(self):
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308 # Start at 1 to skip the header
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309 offset = 1
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310 while offset < self.datasize:
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311 data = self._data
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312 # <2 byte len> + <filename>
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313 filenamelen = struct.unpack(
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314 b'!H', data[offset : offset + constants.FILENAMESIZE]
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315 )[0]
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316 offset += constants.FILENAMESIZE
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317 filename = data[offset : offset + filenamelen]
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318 offset += filenamelen
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319
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320 revcount = struct.unpack(
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321 b'!I', data[offset : offset + ENTRYCOUNTSIZE]
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322 )[0]
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323 offset += ENTRYCOUNTSIZE
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324
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325 for i in pycompat.xrange(revcount):
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326 entry = struct.unpack(
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327 PACKFORMAT, data[offset : offset + PACKENTRYLENGTH]
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328 )
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329 offset += PACKENTRYLENGTH
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330
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331 copyfrom = data[offset : offset + entry[ANC_COPYFROM]]
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332 offset += entry[ANC_COPYFROM]
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333
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334 yield (
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335 filename,
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336 entry[ANC_NODE],
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337 entry[ANC_P1NODE],
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338 entry[ANC_P2NODE],
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339 entry[ANC_LINKNODE],
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340 copyfrom,
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341 )
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342
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343 self._pagedin += PACKENTRYLENGTH
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344
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345 # If we've read a lot of data from the mmap, free some memory.
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346 self.freememory()
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347
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348
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349 class mutablehistorypack(basepack.mutablebasepack):
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350 """A class for constructing and serializing a histpack file and index.
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351
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352 A history pack is a pair of files that contain the revision history for
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353 various file revisions in Mercurial. It contains only revision history (like
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354 parent pointers and linknodes), not any revision content information.
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355
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356 It consists of two files, with the following format:
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357
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358 .histpack
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359 The pack itself is a series of file revisions with some basic header
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360 information on each.
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361
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362 datapack = <version: 1 byte>
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363 [<filesection>,...]
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364 filesection = <filename len: 2 byte unsigned int>
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365 <filename>
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366 <revision count: 4 byte unsigned int>
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367 [<revision>,...]
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368 revision = <node: 20 byte>
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369 <p1node: 20 byte>
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370 <p2node: 20 byte>
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371 <linknode: 20 byte>
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372 <copyfromlen: 2 byte>
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373 <copyfrom>
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374
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375 The revisions within each filesection are stored in topological order
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376 (newest first). If a given entry has a parent from another file (a copy)
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377 then p1node is the node from the other file, and copyfrom is the
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diff changeset
378 filepath of the other file.
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379
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380 .histidx
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diff changeset
381 The index file provides a mapping from filename to the file section in
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diff changeset
382 the histpack. In V1 it also contains sub-indexes for specific nodes
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parents:
diff changeset
383 within each file. It consists of three parts, the fanout, the file index
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
384 and the node indexes.
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
385
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
386 The file index is a list of index entries, sorted by filename hash (one
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
387 per file section in the pack). Each entry has:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
388
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
389 - node (The 20 byte hash of the filename)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
390 - pack entry offset (The location of this file section in the histpack)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
391 - pack content size (The on-disk length of this file section's pack
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
392 data)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
393 - node index offset (The location of the file's node index in the index
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
394 file) [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
395 - node index size (the on-disk length of this file's node index) [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
396
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
397 The fanout is a quick lookup table to reduce the number of steps for
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
398 bisecting the index. It is a series of 4 byte pointers to positions
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
399 within the index. It has 2^16 entries, which corresponds to hash
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
400 prefixes [00, 01, 02,..., FD, FE, FF]. Example: the pointer in slot 4F
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
401 points to the index position of the first revision whose node starts
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
402 with 4F. This saves log(2^16) bisect steps.
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
403
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
404 dataidx = <fanouttable>
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
405 <file count: 8 byte unsigned> [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
406 <fileindex>
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
407 <node count: 8 byte unsigned> [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
408 [<nodeindex>,...] [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
409 fanouttable = [<index offset: 4 byte unsigned int>,...] (2^16 entries)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
410
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
411 fileindex = [<file index entry>,...]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
412 fileindexentry = <node: 20 byte>
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
413 <pack file section offset: 8 byte unsigned int>
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
414 <pack file section size: 8 byte unsigned int>
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
415 <node index offset: 4 byte unsigned int> [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
416 <node index size: 4 byte unsigned int> [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
417 nodeindex = <filename>[<node index entry>,...] [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
418 filename = <filename len : 2 byte unsigned int><filename value> [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
419 nodeindexentry = <node: 20 byte> [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
420 <pack file node offset: 8 byte unsigned int> [1]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
421
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
422 [1]: new in version 1.
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
423 """
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
424
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
425 INDEXSUFFIX = INDEXSUFFIX
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
426 PACKSUFFIX = PACKSUFFIX
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
427
40506
10c10da14c5d remotefilelog: bump pack file formats to version 2
Augie Fackler <augie@google.com>
parents: 40495
diff changeset
428 SUPPORTED_VERSIONS = [2]
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
429
40506
10c10da14c5d remotefilelog: bump pack file formats to version 2
Augie Fackler <augie@google.com>
parents: 40495
diff changeset
430 def __init__(self, ui, packpath, version=2):
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
431 super(mutablehistorypack, self).__init__(ui, packpath, version=version)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
432 self.files = {}
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
433 self.entrylocations = {}
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
434 self.fileentries = {}
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
435
40506
10c10da14c5d remotefilelog: bump pack file formats to version 2
Augie Fackler <augie@google.com>
parents: 40495
diff changeset
436 self.INDEXFORMAT = INDEXFORMAT2
10c10da14c5d remotefilelog: bump pack file formats to version 2
Augie Fackler <augie@google.com>
parents: 40495
diff changeset
437 self.INDEXENTRYLENGTH = INDEXENTRYLENGTH2
40495
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Augie Fackler <augie@google.com>
parents:
diff changeset
438
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
439 self.NODEINDEXFORMAT = NODEINDEXFORMAT
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
440 self.NODEINDEXENTRYLENGTH = NODEINDEXENTRYLENGTH
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
441
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
442 def add(self, filename, node, p1, p2, linknode, copyfrom):
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
443 copyfrom = copyfrom or b''
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
444 copyfromlen = struct.pack(b'!H', len(copyfrom))
43076
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Augie Fackler <augie@google.com>
parents: 41365
diff changeset
445 self.fileentries.setdefault(filename, []).append(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
446 (node, p1, p2, linknode, copyfromlen, copyfrom)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
447 )
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
448
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
449 def _write(self):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
450 for filename in sorted(self.fileentries):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
451 entries = self.fileentries[filename]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
452 sectionstart = self.packfp.tell()
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
453
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
454 # Write the file section content
44452
9d2b2df2c2ba cleanup: run pyupgrade on our source tree to clean up varying things
Augie Fackler <augie@google.com>
parents: 44062
diff changeset
455 entrymap = {e[0]: e for e in entries}
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
456
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
457 def parentfunc(node):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
458 x, p1, p2, x, x, x = entrymap[node]
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
459 parents = []
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
460 if p1 != nullid:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
461 parents.append(p1)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
462 if p2 != nullid:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
463 parents.append(p2)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
464 return parents
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
465
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
466 sortednodes = list(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
467 reversed(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
468 shallowutil.sortnodes((e[0] for e in entries), parentfunc)
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
469 )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
470 )
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
471
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
472 # Write the file section header
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
473 self.writeraw(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
474 b"%s%s%s"
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
475 % (
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
476 struct.pack(b'!H', len(filename)),
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
477 filename,
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
478 struct.pack(b'!I', len(sortednodes)),
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
479 )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41365
diff changeset
480 )
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
481
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
482 sectionlen = constants.FILENAMESIZE + len(filename) + 4
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
483
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
484 rawstrings = []
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
485
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
486 # Record the node locations for the index
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
487 locations = self.entrylocations.setdefault(filename, {})
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
488 offset = sectionstart + sectionlen
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
489 for node in sortednodes:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
490 locations[node] = offset
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
491 raw = b'%s%s%s%s%s%s' % entrymap[node]
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
492 rawstrings.append(raw)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
493 offset += len(raw)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
494
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
495 rawdata = b''.join(rawstrings)
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
496 sectionlen += len(rawdata)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
497
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
498 self.writeraw(rawdata)
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
499
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
500 # Record metadata for the index
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
501 self.files[filename] = (sectionstart, sectionlen)
44062
2d49482d0dd4 hgext: replace references to hashlib.sha1 with hashutil.sha1
Augie Fackler <augie@google.com>
parents: 43105
diff changeset
502 node = hashutil.sha1(filename).digest()
40495
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
503 self.entries[node] = node
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
504
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
505 def close(self, ledger=None):
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
506 if self._closed:
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
507 return
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
508
3a333a582d7b remotefilelog: import pruned-down remotefilelog extension from hg-experimental
Augie Fackler <augie@google.com>
parents:
diff changeset
509 self._write()
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510
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511 return super(mutablehistorypack, self).close(ledger=ledger)
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512
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513 def createindex(self, nodelocations, indexoffset):
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514 fileindexformat = self.INDEXFORMAT
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515 fileindexlength = self.INDEXENTRYLENGTH
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516 nodeindexformat = self.NODEINDEXFORMAT
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517 nodeindexlength = self.NODEINDEXENTRYLENGTH
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518
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519 files = (
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520 (hashutil.sha1(filename).digest(), filename, offset, size)
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521 for filename, (offset, size) in pycompat.iteritems(self.files)
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522 )
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523 files = sorted(files)
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524
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525 # node index is after file index size, file index, and node index size
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526 indexlensize = struct.calcsize(b'!Q')
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527 nodeindexoffset = (
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528 indexoffset
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529 + indexlensize
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530 + (len(files) * fileindexlength)
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531 + indexlensize
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532 )
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533
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534 fileindexentries = []
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535 nodeindexentries = []
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536 nodecount = 0
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537 for namehash, filename, offset, size in files:
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538 # File section index
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539 nodelocations = self.entrylocations[filename]
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540
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541 nodeindexsize = len(nodelocations) * nodeindexlength
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542
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543 rawentry = struct.pack(
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544 fileindexformat,
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545 namehash,
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546 offset,
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547 size,
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548 nodeindexoffset,
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549 nodeindexsize,
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550 )
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551 # Node index
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552 nodeindexentries.append(
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553 struct.pack(constants.FILENAMESTRUCT, len(filename)) + filename
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554 )
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555 nodeindexoffset += constants.FILENAMESIZE + len(filename)
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parents:
diff changeset
556
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557 for node, location in sorted(pycompat.iteritems(nodelocations)):
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558 nodeindexentries.append(
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559 struct.pack(nodeindexformat, node, location)
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560 )
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561 nodecount += 1
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562
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563 nodeindexoffset += len(nodelocations) * nodeindexlength
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parents:
diff changeset
564
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diff changeset
565 fileindexentries.append(rawentry)
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diff changeset
566
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567 nodecountraw = struct.pack(b'!Q', nodecount)
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568 return (
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569 b''.join(fileindexentries)
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570 + nodecountraw
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571 + b''.join(nodeindexentries)
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572 )