Mercurial > hg
annotate mercurial/dirstatemap.py @ 48113:e2da3ec94169
dirstate-item: point out that `merged` is set only with p1_tracked
This is currently True, and we will use this fact to simplify the API in the
next commit. However, we add this assertion first to validate that this is
True in the whole test-suite.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Thu, 30 Sep 2021 18:07:31 +0200 |
parents | 2c2788ce0257 |
children | aec5b0981c26 |
rev | line source |
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1 # dirstatemap.py |
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2 # |
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3 # This software may be used and distributed according to the terms of the |
10263 | 4 # GNU General Public License version 2 or any later version. |
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5 |
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6 from __future__ import absolute_import |
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7 |
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8 import errno |
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9 |
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10 from .i18n import _ |
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11 |
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12 from . import ( |
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13 error, |
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14 pathutil, |
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15 policy, |
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16 pycompat, |
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17 txnutil, |
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18 util, |
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19 ) |
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20 |
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21 from .dirstateutils import ( |
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22 docket as docketmod, |
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23 ) |
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24 |
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25 parsers = policy.importmod('parsers') |
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26 rustmod = policy.importrust('dirstate') |
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27 |
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28 propertycache = util.propertycache |
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29 |
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30 if rustmod is None: |
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31 DirstateItem = parsers.DirstateItem |
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32 else: |
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33 DirstateItem = rustmod.DirstateItem |
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34 |
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35 rangemask = 0x7FFFFFFF |
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36 |
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37 |
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38 class dirstatemap(object): |
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39 """Map encapsulating the dirstate's contents. |
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40 |
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41 The dirstate contains the following state: |
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42 |
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43 - `identity` is the identity of the dirstate file, which can be used to |
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44 detect when changes have occurred to the dirstate file. |
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45 |
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46 - `parents` is a pair containing the parents of the working copy. The |
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47 parents are updated by calling `setparents`. |
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48 |
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49 - the state map maps filenames to tuples of (state, mode, size, mtime), |
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50 where state is a single character representing 'normal', 'added', |
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51 'removed', or 'merged'. It is read by treating the dirstate as a |
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52 dict. File state is updated by calling various methods (see each |
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53 documentation for details): |
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54 |
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55 - `reset_state`, |
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56 - `set_tracked` |
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57 - `set_untracked` |
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58 - `set_clean` |
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59 - `set_possibly_dirty` |
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60 |
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61 - `copymap` maps destination filenames to their source filename. |
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62 |
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63 The dirstate also provides the following views onto the state: |
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64 |
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65 - `filefoldmap` is a dict mapping normalized filenames to the denormalized |
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66 form that they appear as in the dirstate. |
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67 |
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68 - `dirfoldmap` is a dict mapping normalized directory names to the |
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69 denormalized form that they appear as in the dirstate. |
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70 """ |
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71 |
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72 def __init__(self, ui, opener, root, nodeconstants, use_dirstate_v2): |
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73 self._ui = ui |
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74 self._opener = opener |
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75 self._root = root |
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76 self._filename = b'dirstate' |
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77 self._nodelen = 20 |
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78 self._nodeconstants = nodeconstants |
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79 assert ( |
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80 not use_dirstate_v2 |
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81 ), "should have detected unsupported requirement" |
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82 |
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83 self._parents = None |
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84 self._dirtyparents = False |
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85 |
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86 # for consistent view between _pl() and _read() invocations |
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87 self._pendingmode = None |
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88 |
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89 @propertycache |
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90 def _map(self): |
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91 self._map = {} |
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92 self.read() |
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93 return self._map |
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94 |
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95 @propertycache |
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96 def copymap(self): |
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97 self.copymap = {} |
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98 self._map |
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99 return self.copymap |
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100 |
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101 def clear(self): |
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102 self._map.clear() |
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103 self.copymap.clear() |
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104 self.setparents(self._nodeconstants.nullid, self._nodeconstants.nullid) |
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105 util.clearcachedproperty(self, b"_dirs") |
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106 util.clearcachedproperty(self, b"_alldirs") |
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107 util.clearcachedproperty(self, b"filefoldmap") |
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108 util.clearcachedproperty(self, b"dirfoldmap") |
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109 |
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110 def items(self): |
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111 return pycompat.iteritems(self._map) |
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112 |
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113 # forward for python2,3 compat |
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114 iteritems = items |
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115 |
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116 def debug_iter(self, all): |
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117 """ |
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118 Return an iterator of (filename, state, mode, size, mtime) tuples |
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119 |
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120 `all` is unused when Rust is not enabled |
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121 """ |
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122 for (filename, item) in self.items(): |
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123 yield (filename, item.state, item.mode, item.size, item.mtime) |
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124 |
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125 def __len__(self): |
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126 return len(self._map) |
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127 |
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128 def __iter__(self): |
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129 return iter(self._map) |
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130 |
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131 def get(self, key, default=None): |
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132 return self._map.get(key, default) |
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133 |
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134 def __contains__(self, key): |
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135 return key in self._map |
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136 |
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137 def __getitem__(self, key): |
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138 return self._map[key] |
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139 |
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140 def keys(self): |
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141 return self._map.keys() |
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142 |
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143 def preload(self): |
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144 """Loads the underlying data, if it's not already loaded""" |
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145 self._map |
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146 |
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147 def _dirs_incr(self, filename, old_entry=None): |
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148 """incremente the dirstate counter if applicable""" |
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149 if ( |
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150 old_entry is None or old_entry.removed |
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151 ) and "_dirs" in self.__dict__: |
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152 self._dirs.addpath(filename) |
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153 if old_entry is None and "_alldirs" in self.__dict__: |
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154 self._alldirs.addpath(filename) |
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155 |
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156 def _dirs_decr(self, filename, old_entry=None, remove_variant=False): |
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157 """decremente the dirstate counter if applicable""" |
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158 if old_entry is not None: |
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159 if "_dirs" in self.__dict__ and not old_entry.removed: |
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160 self._dirs.delpath(filename) |
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161 if "_alldirs" in self.__dict__ and not remove_variant: |
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162 self._alldirs.delpath(filename) |
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163 elif remove_variant and "_alldirs" in self.__dict__: |
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164 self._alldirs.addpath(filename) |
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165 if "filefoldmap" in self.__dict__: |
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166 normed = util.normcase(filename) |
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167 self.filefoldmap.pop(normed, None) |
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168 |
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169 def set_possibly_dirty(self, filename): |
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170 """record that the current state of the file on disk is unknown""" |
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171 self[filename].set_possibly_dirty() |
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172 |
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173 def set_clean(self, filename, mode, size, mtime): |
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174 """mark a file as back to a clean state""" |
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175 entry = self[filename] |
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176 mtime = mtime & rangemask |
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177 size = size & rangemask |
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178 entry.set_clean(mode, size, mtime) |
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179 self.copymap.pop(filename, None) |
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180 |
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181 def reset_state( |
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182 self, |
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183 filename, |
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184 wc_tracked=False, |
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185 p1_tracked=False, |
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186 p2_tracked=False, |
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187 merged=False, |
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188 clean_p1=False, |
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189 clean_p2=False, |
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190 possibly_dirty=False, |
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191 parentfiledata=None, |
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192 ): |
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193 """Set a entry to a given state, diregarding all previous state |
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194 |
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195 This is to be used by the part of the dirstate API dedicated to |
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196 adjusting the dirstate after a update/merge. |
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197 |
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198 note: calling this might result to no entry existing at all if the |
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199 dirstate map does not see any point at having one for this file |
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200 anymore. |
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201 """ |
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202 if merged and (clean_p1 or clean_p2): |
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203 msg = b'`merged` argument incompatible with `clean_p1`/`clean_p2`' |
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204 raise error.ProgrammingError(msg) |
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205 # copy information are now outdated |
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206 # (maybe new information should be in directly passed to this function) |
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207 self.copymap.pop(filename, None) |
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208 |
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209 if not (p1_tracked or p2_tracked or wc_tracked): |
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210 old_entry = self._map.pop(filename, None) |
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211 self._dirs_decr(filename, old_entry=old_entry) |
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212 self.copymap.pop(filename, None) |
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47894
diff
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|
213 return |
47692
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diff
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|
214 elif merged: |
48109
2c2788ce0257
dirstate: remove a update_file's special case for `merged` file
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48108
diff
changeset
|
215 pass |
47692
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diff
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|
216 elif not (p1_tracked or p2_tracked) and wc_tracked: |
47903
6816ae362ddd
dirstatemap: use the default code to handle "added" case
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47902
diff
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|
217 pass # file is added, nothing special to adjust |
47692
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diff
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|
218 elif (p1_tracked or p2_tracked) and not wc_tracked: |
47902
4cade5e944c2
dirstatemap: use the default code to handle "removed" case
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parents:
47901
diff
changeset
|
219 pass |
47692
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220 elif clean_p2 and wc_tracked: |
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dirstate: remove a update_file's special case for tracked file with p2 data
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parents:
48068
diff
changeset
|
221 pass |
47692
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diff
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222 elif not p1_tracked and p2_tracked and wc_tracked: |
47900
40cf4b278f8f
dirstatemap: use the default code to handle "p2-tracked" case
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47899
diff
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|
223 clean_p2 = True |
47692
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diff
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|
224 elif possibly_dirty: |
47899
625b6ddb828c
dirstatemap: use the default code to handle "possibly_dirty" case
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parents:
47898
diff
changeset
|
225 pass |
47692
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226 elif wc_tracked: |
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227 # this is a "normal" file |
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228 if parentfiledata is None: |
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229 msg = b'failed to pass parentfiledata for a normal file: %s' |
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diff
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230 msg %= filename |
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231 raise error.ProgrammingError(msg) |
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232 else: |
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233 assert False, 'unreachable' |
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234 |
47897
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235 old_entry = self._map.get(filename) |
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236 self._dirs_incr(filename, old_entry) |
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237 entry = DirstateItem( |
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238 wc_tracked=wc_tracked, |
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diff
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239 p1_tracked=p1_tracked, |
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diff
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240 p2_tracked=p2_tracked, |
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diff
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|
241 merged=merged, |
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|
242 clean_p1=clean_p1, |
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243 clean_p2=clean_p2, |
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diff
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244 possibly_dirty=possibly_dirty, |
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diff
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|
245 parentfiledata=parentfiledata, |
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246 ) |
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diff
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247 self._map[filename] = entry |
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248 |
47990
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dirstate: introduce a set_tracked method on "map" and "item"
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diff
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|
249 def set_tracked(self, filename): |
0d2a404f1932
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250 new = False |
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251 entry = self.get(filename) |
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252 if entry is None: |
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253 self._dirs_incr(filename) |
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254 entry = DirstateItem( |
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255 p1_tracked=False, |
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256 p2_tracked=False, |
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257 wc_tracked=True, |
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258 merged=False, |
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259 clean_p1=False, |
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260 clean_p2=False, |
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diff
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261 possibly_dirty=False, |
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diff
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262 parentfiledata=None, |
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diff
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|
263 ) |
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dirstate: introduce a set_tracked method on "map" and "item"
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diff
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264 self._map[filename] = entry |
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diff
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265 new = True |
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266 elif not entry.tracked: |
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267 self._dirs_incr(filename, entry) |
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268 entry.set_tracked() |
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269 new = True |
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270 else: |
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271 # XXX This is probably overkill for more case, but we need this to |
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272 # fully replace the `normallookup` call with `set_tracked` one. |
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273 # Consider smoothing this in the future. |
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diff
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274 self.set_possibly_dirty(filename) |
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275 return new |
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276 |
47890
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diff
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277 def set_untracked(self, f): |
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278 """Mark a file as no longer tracked in the dirstate map""" |
47972
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279 entry = self.get(f) |
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280 if entry is None: |
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281 return False |
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282 else: |
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283 self._dirs_decr(f, old_entry=entry, remove_variant=not entry.added) |
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284 if not entry.merged: |
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285 self.copymap.pop(f, None) |
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286 if entry.added: |
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287 self._map.pop(f, None) |
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288 else: |
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289 entry.set_untracked() |
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|
290 return True |
35079
853b7c41d19c
dirstate: add explicit methods for modifying dirstate
Mark Thomas <mbthomas@fb.com>
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35078
diff
changeset
|
291 |
34676
bfddc3d678ae
dirstate: remove _filefoldmap property cache
Durham Goode <durham@fb.com>
parents:
34675
diff
changeset
|
292 @propertycache |
34334
d8b35920b7b1
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diff
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|
293 def filefoldmap(self): |
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294 """Returns a dictionary mapping normalized case paths to their |
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295 non-normalized versions. |
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296 """ |
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297 try: |
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298 makefilefoldmap = parsers.make_file_foldmap |
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|
299 except AttributeError: |
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diff
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|
300 pass |
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301 else: |
43076
2372284d9457
formatting: blacken the codebase
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42927
diff
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|
302 return makefilefoldmap( |
2372284d9457
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diff
changeset
|
303 self._map, util.normcasespec, util.normcasefallback |
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diff
changeset
|
304 ) |
34334
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|
305 |
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306 f = {} |
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diff
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|
307 normcase = util.normcase |
43106
d783f945a701
py3: finish porting iteritems() to pycompat and remove source transformer
Gregory Szorc <gregory.szorc@gmail.com>
parents:
43090
diff
changeset
|
308 for name, s in pycompat.iteritems(self._map): |
47542
b8013cb71ef3
dirstate-item: use the properties in dirstatemap
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
47539
diff
changeset
|
309 if not s.removed: |
34334
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diff
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|
310 f[normcase(name)] = name |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
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|
311 f[b'.'] = b'.' # prevents useless util.fspath() invocation |
34334
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312 return f |
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313 |
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314 def hastrackeddir(self, d): |
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315 """ |
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316 Returns True if the dirstate contains a tracked (not removed) file |
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|
317 in this directory. |
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318 """ |
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319 return d in self._dirs |
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320 |
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321 def hasdir(self, d): |
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322 """ |
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323 Returns True if the dirstate contains a file (tracked or removed) |
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324 in this directory. |
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325 """ |
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326 return d in self._alldirs |
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327 |
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|
328 @propertycache |
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329 def _dirs(self): |
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330 return pathutil.dirs(self._map, only_tracked=True) |
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331 |
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332 @propertycache |
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333 def _alldirs(self): |
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334 return pathutil.dirs(self._map) |
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335 |
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336 def _opendirstatefile(self): |
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337 fp, mode = txnutil.trypending(self._root, self._opener, self._filename) |
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338 if self._pendingmode is not None and self._pendingmode != mode: |
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339 fp.close() |
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340 raise error.Abort( |
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341 _(b'working directory state may be changed parallelly') |
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342 ) |
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343 self._pendingmode = mode |
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344 return fp |
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345 |
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346 def parents(self): |
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347 if not self._parents: |
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348 try: |
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349 fp = self._opendirstatefile() |
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350 st = fp.read(2 * self._nodelen) |
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351 fp.close() |
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352 except IOError as err: |
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353 if err.errno != errno.ENOENT: |
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354 raise |
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355 # File doesn't exist, so the current state is empty |
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356 st = b'' |
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357 |
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358 l = len(st) |
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359 if l == self._nodelen * 2: |
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360 self._parents = ( |
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361 st[: self._nodelen], |
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362 st[self._nodelen : 2 * self._nodelen], |
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363 ) |
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364 elif l == 0: |
47012
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|
365 self._parents = ( |
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366 self._nodeconstants.nullid, |
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367 self._nodeconstants.nullid, |
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368 ) |
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369 else: |
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370 raise error.Abort( |
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371 _(b'working directory state appears damaged!') |
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372 ) |
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373 |
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374 return self._parents |
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375 |
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376 def setparents(self, p1, p2, fold_p2=False): |
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377 self._parents = (p1, p2) |
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378 self._dirtyparents = True |
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379 copies = {} |
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380 if fold_p2: |
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060cd909439f
dirstate: drop all logic around the "non-normal" sets
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|
381 for f, s in pycompat.iteritems(self._map): |
48059
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382 # Discard "merged" markers when moving away from a merge state |
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|
383 if s.merged or s.from_p2: |
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|
384 source = self.copymap.pop(f, None) |
48059
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|
385 if source: |
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|
386 copies[f] = source |
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|
387 s.drop_merge_data() |
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388 return copies |
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|
389 |
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|
390 def read(self): |
34675
c6ef9a2498a5
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diff
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|
391 # ignore HG_PENDING because identity is used only for writing |
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|
392 self.identity = util.filestat.frompath( |
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393 self._opener.join(self._filename) |
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|
394 ) |
34675
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|
395 |
34672
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|
396 try: |
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397 fp = self._opendirstatefile() |
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|
398 try: |
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399 st = fp.read() |
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400 finally: |
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|
401 fp.close() |
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402 except IOError as err: |
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403 if err.errno != errno.ENOENT: |
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|
404 raise |
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diff
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|
405 return |
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|
406 if not st: |
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|
407 return |
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|
408 |
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|
409 if util.safehasattr(parsers, b'dict_new_presized'): |
34672
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|
410 # Make an estimate of the number of files in the dirstate based on |
45243
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|
411 # its size. This trades wasting some memory for avoiding costly |
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|
412 # resizes. Each entry have a prefix of 17 bytes followed by one or |
ad7006830106
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413 # two path names. Studies on various large-scale real-world repositories |
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414 # found 54 bytes a reasonable upper limit for the average path names. |
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415 # Copy entries are ignored for the sake of this estimate. |
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|
416 self._map = parsers.dict_new_presized(len(st) // 71) |
34672
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|
417 |
e159f217230e
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418 # Python's garbage collector triggers a GC each time a certain number |
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419 # of container objects (the number being defined by |
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|
420 # gc.get_threshold()) are allocated. parse_dirstate creates a tuple |
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|
421 # for each file in the dirstate. The C version then immediately marks |
e159f217230e
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422 # them as not to be tracked by the collector. However, this has no |
e159f217230e
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423 # effect on when GCs are triggered, only on what objects the GC looks |
e159f217230e
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424 # into. This means that O(number of files) GCs are unavoidable. |
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425 # Depending on when in the process's lifetime the dirstate is parsed, |
e159f217230e
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|
426 # this can get very expensive. As a workaround, disable GC while |
e159f217230e
dirstate: move _read into dirstatemap
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427 # parsing the dirstate. |
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428 # |
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429 # (we cannot decorate the function directly since it is in a C module) |
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430 parse_dirstate = util.nogc(parsers.parse_dirstate) |
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431 p = parse_dirstate(self._map, self.copymap, st) |
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432 if not self._dirtyparents: |
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433 self.setparents(*p) |
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434 |
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435 # Avoid excess attribute lookups by fast pathing certain checks |
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436 self.__contains__ = self._map.__contains__ |
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437 self.__getitem__ = self._map.__getitem__ |
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438 self.get = self._map.get |
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439 |
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440 def write(self, _tr, st, now): |
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441 st.write( |
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442 parsers.pack_dirstate(self._map, self.copymap, self.parents(), now) |
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443 ) |
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444 st.close() |
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445 self._dirtyparents = False |
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446 |
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447 @propertycache |
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448 def identity(self): |
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449 self._map |
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450 return self.identity |
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451 |
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452 @propertycache |
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453 def dirfoldmap(self): |
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454 f = {} |
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455 normcase = util.normcase |
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456 for name in self._dirs: |
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457 f[normcase(name)] = name |
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458 return f |
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459 |
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460 |
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461 if rustmod is not None: |
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462 |
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463 class dirstatemap(object): |
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464 def __init__(self, ui, opener, root, nodeconstants, use_dirstate_v2): |
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465 self._use_dirstate_v2 = use_dirstate_v2 |
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466 self._nodeconstants = nodeconstants |
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467 self._ui = ui |
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468 self._opener = opener |
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469 self._root = root |
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470 self._filename = b'dirstate' |
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471 self._nodelen = 20 # Also update Rust code when changing this! |
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472 self._parents = None |
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473 self._dirtyparents = False |
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474 self._docket = None |
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475 |
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476 # for consistent view between _pl() and _read() invocations |
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477 self._pendingmode = None |
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478 |
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479 def addfile( |
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480 self, |
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481 f, |
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482 mode=0, |
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483 size=None, |
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484 mtime=None, |
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485 added=False, |
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486 merged=False, |
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487 from_p2=False, |
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488 possibly_dirty=False, |
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|
489 ): |
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490 if added: |
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|
491 assert not possibly_dirty |
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492 assert not from_p2 |
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493 item = DirstateItem.new_added() |
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494 elif merged: |
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495 assert not possibly_dirty |
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496 assert not from_p2 |
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497 item = DirstateItem.new_merged() |
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498 elif from_p2: |
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499 assert not possibly_dirty |
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500 item = DirstateItem.new_from_p2() |
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501 elif possibly_dirty: |
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502 item = DirstateItem.new_possibly_dirty() |
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|
503 else: |
48052
d07d38ef6362
dirstate: Appease pytype
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diff
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|
504 assert size is not None |
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|
505 assert mtime is not None |
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|
506 size = size & rangemask |
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|
507 mtime = mtime & rangemask |
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|
508 item = DirstateItem.new_normal(mode, size, mtime) |
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|
509 self._rustmap.addfile(f, item) |
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dirstate: same logic as what we did for `_drop`
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|
510 if added: |
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|
511 self.copymap.pop(f, None) |
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512 |
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|
513 def reset_state( |
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514 self, |
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|
515 filename, |
47998
938a7769050c
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|
516 wc_tracked=False, |
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517 p1_tracked=False, |
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518 p2_tracked=False, |
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519 merged=False, |
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|
520 clean_p1=False, |
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521 clean_p2=False, |
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522 possibly_dirty=False, |
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523 parentfiledata=None, |
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524 ): |
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changeset
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525 """Set a entry to a given state, disregarding all previous state |
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526 |
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527 This is to be used by the part of the dirstate API dedicated to |
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|
528 adjusting the dirstate after a update/merge. |
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529 |
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|
530 note: calling this might result to no entry existing at all if the |
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|
531 dirstate map does not see any point at having one for this file |
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532 anymore. |
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533 """ |
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534 if merged and (clean_p1 or clean_p2): |
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535 msg = ( |
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536 b'`merged` argument incompatible with `clean_p1`/`clean_p2`' |
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537 ) |
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538 raise error.ProgrammingError(msg) |
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539 # copy information are now outdated |
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540 # (maybe new information should be in directly passed to this function) |
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541 self.copymap.pop(filename, None) |
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542 |
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543 if not (p1_tracked or p2_tracked or wc_tracked): |
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544 self._rustmap.drop_item_and_copy_source(filename) |
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545 elif merged: |
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546 # XXX might be merged and removed ? |
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547 entry = self.get(filename) |
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548 if entry is not None and entry.tracked: |
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549 # XXX mostly replicate dirstate.other parent. We should get |
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550 # the higher layer to pass us more reliable data where `merged` |
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551 # actually mean merged. Dropping the else clause will show |
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552 # failure in `test-graft.t` |
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553 self.addfile(filename, merged=True) |
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554 else: |
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555 self.addfile(filename, from_p2=True) |
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556 elif not (p1_tracked or p2_tracked) and wc_tracked: |
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557 self.addfile( |
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558 filename, added=True, possibly_dirty=possibly_dirty |
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559 ) |
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560 elif (p1_tracked or p2_tracked) and not wc_tracked: |
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561 # XXX might be merged and removed ? |
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562 self[filename] = DirstateItem.from_v1_data(b'r', 0, 0, 0) |
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563 elif clean_p2 and wc_tracked: |
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564 if p1_tracked or self.get(filename) is not None: |
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565 # XXX the `self.get` call is catching some case in |
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566 # `test-merge-remove.t` where the file is tracked in p1, the |
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567 # p1_tracked argument is False. |
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568 # |
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569 # In addition, this seems to be a case where the file is marked |
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570 # as merged without actually being the result of a merge |
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571 # action. So thing are not ideal here. |
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572 self.addfile(filename, merged=True) |
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573 else: |
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574 self.addfile(filename, from_p2=True) |
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575 elif not p1_tracked and p2_tracked and wc_tracked: |
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576 self.addfile( |
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577 filename, from_p2=True, possibly_dirty=possibly_dirty |
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578 ) |
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579 elif possibly_dirty: |
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580 self.addfile(filename, possibly_dirty=possibly_dirty) |
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581 elif wc_tracked: |
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582 # this is a "normal" file |
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583 if parentfiledata is None: |
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584 msg = b'failed to pass parentfiledata for a normal file: %s' |
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585 msg %= filename |
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586 raise error.ProgrammingError(msg) |
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587 mode, size, mtime = parentfiledata |
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588 self.addfile(filename, mode=mode, size=size, mtime=mtime) |
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589 else: |
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590 assert False, 'unreachable' |
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591 |
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592 def set_tracked(self, filename): |
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593 new = False |
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594 entry = self.get(filename) |
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595 if entry is None: |
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596 self.addfile(filename, added=True) |
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597 new = True |
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598 elif not entry.tracked: |
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599 entry.set_tracked() |
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600 self._rustmap.set_dirstate_item(filename, entry) |
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601 new = True |
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602 else: |
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603 # XXX This is probably overkill for more case, but we need this to |
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604 # fully replace the `normallookup` call with `set_tracked` one. |
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605 # Consider smoothing this in the future. |
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606 self.set_possibly_dirty(filename) |
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607 return new |
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608 |
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609 def set_untracked(self, f): |
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610 """Mark a file as no longer tracked in the dirstate map""" |
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611 # in merge is only trigger more logic, so it "fine" to pass it. |
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612 # |
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613 # the inner rust dirstate map code need to be adjusted once the API |
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614 # for dirstate/dirstatemap/DirstateItem is a bit more settled |
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615 entry = self.get(f) |
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616 if entry is None: |
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617 return False |
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618 else: |
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619 if entry.added: |
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620 self._rustmap.drop_item_and_copy_source(f) |
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621 else: |
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622 self._rustmap.removefile(f, in_merge=True) |
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623 return True |
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624 |
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625 def removefile(self, *args, **kwargs): |
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626 return self._rustmap.removefile(*args, **kwargs) |
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627 |
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628 def get(self, *args, **kwargs): |
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629 return self._rustmap.get(*args, **kwargs) |
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630 |
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631 @property |
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632 def copymap(self): |
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633 return self._rustmap.copymap() |
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634 |
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635 def debug_iter(self, all): |
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636 """ |
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637 Return an iterator of (filename, state, mode, size, mtime) tuples |
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638 |
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639 `all`: also include with `state == b' '` dirstate tree nodes that |
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640 don't have an associated `DirstateItem`. |
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641 |
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642 """ |
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643 return self._rustmap.debug_iter(all) |
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644 |
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645 def preload(self): |
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646 self._rustmap |
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647 |
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648 def clear(self): |
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649 self._rustmap.clear() |
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650 self.setparents( |
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651 self._nodeconstants.nullid, self._nodeconstants.nullid |
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652 ) |
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653 util.clearcachedproperty(self, b"_dirs") |
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654 util.clearcachedproperty(self, b"_alldirs") |
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655 util.clearcachedproperty(self, b"dirfoldmap") |
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656 |
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657 def items(self): |
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658 return self._rustmap.items() |
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659 |
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660 def keys(self): |
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661 return iter(self._rustmap) |
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662 |
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663 def __contains__(self, key): |
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664 return key in self._rustmap |
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665 |
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666 def __getitem__(self, item): |
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667 return self._rustmap[item] |
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668 |
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669 def __len__(self): |
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670 return len(self._rustmap) |
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671 |
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672 def __iter__(self): |
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673 return iter(self._rustmap) |
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674 |
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675 # forward for python2,3 compat |
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676 iteritems = items |
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677 |
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678 def _opendirstatefile(self): |
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679 fp, mode = txnutil.trypending( |
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680 self._root, self._opener, self._filename |
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681 ) |
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682 if self._pendingmode is not None and self._pendingmode != mode: |
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683 fp.close() |
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684 raise error.Abort( |
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685 _(b'working directory state may be changed parallelly') |
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686 ) |
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687 self._pendingmode = mode |
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688 return fp |
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689 |
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690 def _readdirstatefile(self, size=-1): |
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691 try: |
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692 with self._opendirstatefile() as fp: |
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693 return fp.read(size) |
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694 except IOError as err: |
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695 if err.errno != errno.ENOENT: |
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696 raise |
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697 # File doesn't exist, so the current state is empty |
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698 return b'' |
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699 |
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700 def setparents(self, p1, p2, fold_p2=False): |
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701 self._parents = (p1, p2) |
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702 self._dirtyparents = True |
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703 copies = {} |
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704 if fold_p2: |
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705 # Collect into an intermediate list to avoid a `RuntimeError` |
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706 # exception due to mutation during iteration. |
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707 # TODO: move this the whole loop to Rust where `iter_mut` |
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708 # enables in-place mutation of elements of a collection while |
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709 # iterating it, without mutating the collection itself. |
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710 candidatefiles = [ |
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711 (f, s) |
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712 for f, s in self._rustmap.items() |
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713 if s.merged or s.from_p2 |
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714 ] |
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715 for f, s in candidatefiles: |
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716 # Discard "merged" markers when moving away from a merge state |
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717 if s.merged: |
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718 source = self.copymap.get(f) |
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719 if source: |
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720 copies[f] = source |
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721 self.reset_state( |
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722 f, |
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723 wc_tracked=True, |
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724 p1_tracked=True, |
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725 possibly_dirty=True, |
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726 ) |
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727 # Also fix up otherparent markers |
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728 elif s.from_p2: |
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729 source = self.copymap.get(f) |
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730 if source: |
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731 copies[f] = source |
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diff
changeset
|
732 self.reset_state( |
5d68c4eedd66
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diff
changeset
|
733 f, |
5d68c4eedd66
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diff
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|
734 p1_tracked=False, |
5d68c4eedd66
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diff
changeset
|
735 wc_tracked=True, |
5d68c4eedd66
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diff
changeset
|
736 ) |
5d68c4eedd66
dirstate: move parent state handling in the dirstatemap
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diff
changeset
|
737 return copies |
42755
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|
738 |
749ef8c31187
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|
739 def parents(self): |
749ef8c31187
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diff
changeset
|
740 if not self._parents: |
47280
1766130fe9ba
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diff
changeset
|
741 if self._use_dirstate_v2: |
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|
742 self._parents = self.docket.parents |
47280
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dirstate-v2: Change the on-disk format when the requirement is enabled
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changeset
|
743 else: |
47674
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diff
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|
744 read_len = self._nodelen * 2 |
ff97e793ed36
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|
745 st = self._readdirstatefile(read_len) |
ff97e793ed36
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|
746 l = len(st) |
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diff
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|
747 if l == read_len: |
ff97e793ed36
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diff
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|
748 self._parents = ( |
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|
749 st[: self._nodelen], |
ff97e793ed36
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changeset
|
750 st[self._nodelen : 2 * self._nodelen], |
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changeset
|
751 ) |
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changeset
|
752 elif l == 0: |
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diff
changeset
|
753 self._parents = ( |
ff97e793ed36
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diff
changeset
|
754 self._nodeconstants.nullid, |
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diff
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|
755 self._nodeconstants.nullid, |
ff97e793ed36
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diff
changeset
|
756 ) |
ff97e793ed36
dirstate-v2: Introduce a docket file
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changeset
|
757 else: |
ff97e793ed36
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diff
changeset
|
758 raise error.Abort( |
ff97e793ed36
dirstate-v2: Introduce a docket file
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|
759 _(b'working directory state appears damaged!') |
ff97e793ed36
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changeset
|
760 ) |
42755
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changeset
|
761 |
749ef8c31187
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changeset
|
762 return self._parents |
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|
763 |
47674
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changeset
|
764 @property |
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diff
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|
765 def docket(self): |
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|
766 if not self._docket: |
ff97e793ed36
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diff
changeset
|
767 if not self._use_dirstate_v2: |
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diff
changeset
|
768 raise error.ProgrammingError( |
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diff
changeset
|
769 b'dirstate only has a docket in v2 format' |
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changeset
|
770 ) |
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|
771 self._docket = docketmod.DirstateDocket.parse( |
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changeset
|
772 self._readdirstatefile(), self._nodeconstants |
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diff
changeset
|
773 ) |
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diff
changeset
|
774 return self._docket |
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diff
changeset
|
775 |
47122
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rust: Read dirstate from disk in DirstateMap constructor
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changeset
|
776 @propertycache |
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|
777 def _rustmap(self): |
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changeset
|
778 """ |
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|
779 Fills the Dirstatemap when called. |
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|
780 """ |
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781 # ignore HG_PENDING because identity is used only for writing |
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changeset
|
782 self.identity = util.filestat.frompath( |
43076
2372284d9457
formatting: blacken the codebase
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diff
changeset
|
783 self._opener.join(self._filename) |
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parents:
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changeset
|
784 ) |
42755
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|
785 |
47674
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changeset
|
786 if self._use_dirstate_v2: |
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diff
changeset
|
787 if self.docket.uuid: |
ff97e793ed36
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changeset
|
788 # TODO: use mmap when possible |
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changeset
|
789 data = self._opener.read(self.docket.data_filename()) |
ff97e793ed36
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changeset
|
790 else: |
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diff
changeset
|
791 data = b'' |
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|
792 self._rustmap = rustmod.DirstateMap.new_v2( |
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diff
changeset
|
793 data, self.docket.data_size, self.docket.tree_metadata |
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diff
changeset
|
794 ) |
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|
795 parents = self.docket.parents |
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|
796 else: |
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changeset
|
797 self._rustmap, parents = rustmod.DirstateMap.new_v1( |
48068
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diff
changeset
|
798 self._readdirstatefile() |
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|
799 ) |
47122
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changeset
|
800 |
42755
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|
801 if parents and not self._dirtyparents: |
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|
802 self.setparents(*parents) |
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|
803 |
43280
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|
804 self.__contains__ = self._rustmap.__contains__ |
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|
805 self.__getitem__ = self._rustmap.__getitem__ |
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|
806 self.get = self._rustmap.get |
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|
807 return self._rustmap |
43280
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|
808 |
47674
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changeset
|
809 def write(self, tr, st, now): |
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|
810 if not self._use_dirstate_v2: |
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|
811 p1, p2 = self.parents() |
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|
812 packed = self._rustmap.write_v1(p1, p2, now) |
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|
813 st.write(packed) |
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|
814 st.close() |
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changeset
|
815 self._dirtyparents = False |
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|
816 return |
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|
817 |
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changeset
|
818 # We can only append to an existing data file if there is one |
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changeset
|
819 can_append = self.docket.uuid is not None |
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changeset
|
820 packed, meta, append = self._rustmap.write_v2(now, can_append) |
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|
821 if append: |
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|
822 docket = self.docket |
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|
823 data_filename = docket.data_filename() |
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|
824 if tr: |
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changeset
|
825 tr.add(data_filename, docket.data_size) |
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changeset
|
826 with self._opener(data_filename, b'r+b') as fp: |
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|
827 fp.seek(docket.data_size) |
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changeset
|
828 assert fp.tell() == docket.data_size |
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changeset
|
829 written = fp.write(packed) |
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|
830 if written is not None: # py2 may return None |
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changeset
|
831 assert written == len(packed), (written, len(packed)) |
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changeset
|
832 docket.data_size += len(packed) |
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changeset
|
833 docket.parents = self.parents() |
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changeset
|
834 docket.tree_metadata = meta |
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changeset
|
835 st.write(docket.serialize()) |
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|
836 st.close() |
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|
837 else: |
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changeset
|
838 old_docket = self.docket |
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changeset
|
839 new_docket = docketmod.DirstateDocket.with_new_uuid( |
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changeset
|
840 self.parents(), len(packed), meta |
47674
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841 ) |
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842 data_filename = new_docket.data_filename() |
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843 if tr: |
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844 tr.add(data_filename, 0) |
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845 self._opener.write(data_filename, packed) |
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846 # Write the new docket after the new data file has been |
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847 # written. Because `st` was opened with `atomictemp=True`, |
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848 # the actual `.hg/dirstate` file is only affected on close. |
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849 st.write(new_docket.serialize()) |
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850 st.close() |
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851 # Remove the old data file after the new docket pointing to |
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852 # the new data file was written. |
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853 if old_docket.uuid: |
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854 data_filename = old_docket.data_filename() |
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855 unlink = lambda _tr=None: self._opener.unlink(data_filename) |
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856 if tr: |
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857 category = b"dirstate-v2-clean-" + old_docket.uuid |
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858 tr.addpostclose(category, unlink) |
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859 else: |
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860 unlink() |
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861 self._docket = new_docket |
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862 # Reload from the newly-written file |
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863 util.clearcachedproperty(self, b"_rustmap") |
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864 self._dirtyparents = False |
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865 |
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866 @propertycache |
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867 def filefoldmap(self): |
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868 """Returns a dictionary mapping normalized case paths to their |
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869 non-normalized versions. |
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870 """ |
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871 return self._rustmap.filefoldmapasdict() |
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872 |
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873 def hastrackeddir(self, d): |
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874 return self._rustmap.hastrackeddir(d) |
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875 |
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876 def hasdir(self, d): |
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877 return self._rustmap.hasdir(d) |
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878 |
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879 @propertycache |
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880 def identity(self): |
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881 self._rustmap |
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882 return self.identity |
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883 |
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884 @propertycache |
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885 def dirfoldmap(self): |
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886 f = {} |
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887 normcase = util.normcase |
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888 for name in self._rustmap.tracked_dirs(): |
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889 f[normcase(name)] = name |
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890 return f |
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891 |
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892 def set_possibly_dirty(self, filename): |
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893 """record that the current state of the file on disk is unknown""" |
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894 entry = self[filename] |
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895 entry.set_possibly_dirty() |
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896 self._rustmap.set_dirstate_item(filename, entry) |
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897 |
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898 def set_clean(self, filename, mode, size, mtime): |
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899 """mark a file as back to a clean state""" |
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900 entry = self[filename] |
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901 mtime = mtime & rangemask |
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902 size = size & rangemask |
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903 entry.set_clean(mode, size, mtime) |
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904 self._rustmap.set_dirstate_item(filename, entry) |
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905 self._rustmap.copymap().pop(filename, None) |
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906 |
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907 def __setitem__(self, key, value): |
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908 assert isinstance(value, DirstateItem) |
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909 self._rustmap.set_dirstate_item(key, value) |