Mercurial > hg
annotate hgext/sparse.py @ 39845:e6d3d39cc1c7
revlog: use proper version comparison during verify
Verify appears to want to compare the changelog's revlog version
number with the version number of filelogs and error if they are
different. But what it was actually doing was comparing the full
32-bit header integer, which contains 2 shorts: 1 for the revlog
version number and 1 for feature flags.
This commit tweaks the verification code so it only looks at the
version number component of the header and emits a warning if they
differ.
The new code is more robust because it accounts for future revlog
version numbers without them needing to be special cased.
Differential Revision: https://phab.mercurial-scm.org/D4704
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Wed, 19 Sep 2018 11:38:05 -0700 |
parents | d7cecea0b254 |
children | fa88170c10bb |
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1 # sparse.py - allow sparse checkouts of the working directory |
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2 # |
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3 # Copyright 2014 Facebook, Inc. |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 """allow sparse checkouts of the working directory (EXPERIMENTAL) |
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9 |
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10 (This extension is not yet protected by backwards compatibility |
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11 guarantees. Any aspect may break in future releases until this |
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12 notice is removed.) |
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13 |
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14 This extension allows the working directory to only consist of a |
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15 subset of files for the revision. This allows specific files or |
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16 directories to be explicitly included or excluded. Many repository |
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17 operations have performance proportional to the number of files in |
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18 the working directory. So only realizing a subset of files in the |
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19 working directory can improve performance. |
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20 |
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21 Sparse Config Files |
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22 ------------------- |
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23 |
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24 The set of files that are part of a sparse checkout are defined by |
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25 a sparse config file. The file defines 3 things: includes (files to |
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26 include in the sparse checkout), excludes (files to exclude from the |
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27 sparse checkout), and profiles (links to other config files). |
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28 |
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29 The file format is newline delimited. Empty lines and lines beginning |
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30 with ``#`` are ignored. |
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31 |
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32 Lines beginning with ``%include `` denote another sparse config file |
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33 to include. e.g. ``%include tests.sparse``. The filename is relative |
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34 to the repository root. |
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35 |
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36 The special lines ``[include]`` and ``[exclude]`` denote the section |
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37 for includes and excludes that follow, respectively. It is illegal to |
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38 have ``[include]`` after ``[exclude]``. |
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39 |
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40 Non-special lines resemble file patterns to be added to either includes |
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41 or excludes. The syntax of these lines is documented by :hg:`help patterns`. |
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42 Patterns are interpreted as ``glob:`` by default and match against the |
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43 root of the repository. |
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44 |
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45 Exclusion patterns take precedence over inclusion patterns. So even |
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46 if a file is explicitly included, an ``[exclude]`` entry can remove it. |
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47 |
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48 For example, say you have a repository with 3 directories, ``frontend/``, |
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49 ``backend/``, and ``tools/``. ``frontend/`` and ``backend/`` correspond |
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50 to different projects and it is uncommon for someone working on one |
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51 to need the files for the other. But ``tools/`` contains files shared |
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52 between both projects. Your sparse config files may resemble:: |
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53 |
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54 # frontend.sparse |
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55 frontend/** |
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56 tools/** |
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57 |
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58 # backend.sparse |
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59 backend/** |
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60 tools/** |
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61 |
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62 Say the backend grows in size. Or there's a directory with thousands |
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63 of files you wish to exclude. You can modify the profile to exclude |
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64 certain files:: |
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65 |
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66 [include] |
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67 backend/** |
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68 tools/** |
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69 |
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70 [exclude] |
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71 tools/tests/** |
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72 """ |
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73 |
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74 from __future__ import absolute_import |
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75 |
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76 from mercurial.i18n import _ |
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77 from mercurial import ( |
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78 commands, |
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79 dirstate, |
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80 error, |
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81 extensions, |
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82 hg, |
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83 logcmdutil, |
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84 match as matchmod, |
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85 pycompat, |
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86 registrar, |
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87 sparse, |
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88 util, |
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89 ) |
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90 |
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91 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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92 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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93 # be specifying the version(s) of Mercurial they are tested with, or |
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94 # leave the attribute unspecified. |
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95 testedwith = 'ships-with-hg-core' |
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96 |
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97 cmdtable = {} |
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98 command = registrar.command(cmdtable) |
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99 |
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100 def extsetup(ui): |
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101 sparse.enabled = True |
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102 |
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103 _setupclone(ui) |
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104 _setuplog(ui) |
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105 _setupadd(ui) |
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106 _setupdirstate(ui) |
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107 |
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108 def replacefilecache(cls, propname, replacement): |
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109 """Replace a filecache property with a new class. This allows changing the |
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110 cache invalidation condition.""" |
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111 origcls = cls |
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112 assert callable(replacement) |
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113 while cls is not object: |
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114 if propname in cls.__dict__: |
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115 orig = cls.__dict__[propname] |
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116 setattr(cls, propname, replacement(orig)) |
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117 break |
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118 cls = cls.__bases__[0] |
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119 |
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120 if cls is object: |
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121 raise AttributeError(_("type '%s' has no property '%s'") % (origcls, |
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122 propname)) |
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123 |
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124 def _setuplog(ui): |
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125 entry = commands.table['^log|history'] |
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126 entry[1].append(('', 'sparse', None, |
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127 "limit to changesets affecting the sparse checkout")) |
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128 |
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129 def _initialrevs(orig, repo, opts): |
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130 revs = orig(repo, opts) |
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131 if opts.get('sparse'): |
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132 sparsematch = sparse.matcher(repo) |
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133 def ctxmatch(rev): |
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134 ctx = repo[rev] |
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135 return any(f for f in ctx.files() if sparsematch(f)) |
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136 revs = revs.filter(ctxmatch) |
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137 return revs |
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138 extensions.wrapfunction(logcmdutil, '_initialrevs', _initialrevs) |
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139 |
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140 def _clonesparsecmd(orig, ui, repo, *args, **opts): |
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141 include_pat = opts.get(r'include') |
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142 exclude_pat = opts.get(r'exclude') |
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143 enableprofile_pat = opts.get(r'enable_profile') |
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144 include = exclude = enableprofile = False |
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145 if include_pat: |
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146 pat = include_pat |
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147 include = True |
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148 if exclude_pat: |
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149 pat = exclude_pat |
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150 exclude = True |
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151 if enableprofile_pat: |
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152 pat = enableprofile_pat |
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153 enableprofile = True |
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154 if sum([include, exclude, enableprofile]) > 1: |
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155 raise error.Abort(_("too many flags specified.")) |
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156 if include or exclude or enableprofile: |
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157 def clonesparse(orig, self, node, overwrite, *args, **kwargs): |
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158 sparse.updateconfig(self.unfiltered(), pat, {}, include=include, |
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159 exclude=exclude, enableprofile=enableprofile, |
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160 usereporootpaths=True) |
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161 return orig(self, node, overwrite, *args, **kwargs) |
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162 extensions.wrapfunction(hg, 'updaterepo', clonesparse) |
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163 return orig(ui, repo, *args, **opts) |
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164 |
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165 def _setupclone(ui): |
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166 entry = commands.table['^clone'] |
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167 entry[1].append(('', 'enable-profile', [], |
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168 'enable a sparse profile')) |
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169 entry[1].append(('', 'include', [], |
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170 'include sparse pattern')) |
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171 entry[1].append(('', 'exclude', [], |
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172 'exclude sparse pattern')) |
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173 extensions.wrapcommand(commands.table, 'clone', _clonesparsecmd) |
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174 |
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175 def _setupadd(ui): |
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176 entry = commands.table['^add'] |
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177 entry[1].append(('s', 'sparse', None, |
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178 'also include directories of added files in sparse config')) |
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179 |
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180 def _add(orig, ui, repo, *pats, **opts): |
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181 if opts.get(r'sparse'): |
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182 dirs = set() |
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183 for pat in pats: |
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184 dirname, basename = util.split(pat) |
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185 dirs.add(dirname) |
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186 sparse.updateconfig(repo, list(dirs), opts, include=True) |
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187 return orig(ui, repo, *pats, **opts) |
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188 |
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189 extensions.wrapcommand(commands.table, 'add', _add) |
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190 |
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191 def _setupdirstate(ui): |
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192 """Modify the dirstate to prevent stat'ing excluded files, |
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193 and to prevent modifications to files outside the checkout. |
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194 """ |
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195 |
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196 def walk(orig, self, match, subrepos, unknown, ignored, full=True): |
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197 # hack to not exclude explicitly-specified paths so that they can |
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198 # be warned later on e.g. dirstate.add() |
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199 em = matchmod.exact(match._root, match._cwd, match.files()) |
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200 sm = matchmod.unionmatcher([self._sparsematcher, em]) |
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201 match = matchmod.intersectmatchers(match, sm) |
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202 return orig(self, match, subrepos, unknown, ignored, full) |
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203 |
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204 extensions.wrapfunction(dirstate.dirstate, 'walk', walk) |
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205 |
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206 # dirstate.rebuild should not add non-matching files |
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207 def _rebuild(orig, self, parent, allfiles, changedfiles=None): |
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208 matcher = self._sparsematcher |
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209 if not matcher.always(): |
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210 allfiles = allfiles.matches(matcher) |
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211 if changedfiles: |
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212 changedfiles = [f for f in changedfiles if matcher(f)] |
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213 |
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214 if changedfiles is not None: |
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215 # In _rebuild, these files will be deleted from the dirstate |
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216 # when they are not found to be in allfiles |
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217 dirstatefilestoremove = set(f for f in self if not matcher(f)) |
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218 changedfiles = dirstatefilestoremove.union(changedfiles) |
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219 |
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220 return orig(self, parent, allfiles, changedfiles) |
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221 extensions.wrapfunction(dirstate.dirstate, 'rebuild', _rebuild) |
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222 |
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223 # Prevent adding files that are outside the sparse checkout |
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224 editfuncs = ['normal', 'add', 'normallookup', 'copy', 'remove', 'merge'] |
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225 hint = _('include file with `hg debugsparse --include <pattern>` or use ' + |
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226 '`hg add -s <file>` to include file directory while adding') |
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227 for func in editfuncs: |
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228 def _wrapper(orig, self, *args): |
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229 sparsematch = self._sparsematcher |
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230 if not sparsematch.always(): |
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231 for f in args: |
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232 if (f is not None and not sparsematch(f) and |
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233 f not in self): |
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234 raise error.Abort(_("cannot add '%s' - it is outside " |
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235 "the sparse checkout") % f, |
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236 hint=hint) |
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237 return orig(self, *args) |
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238 extensions.wrapfunction(dirstate.dirstate, func, _wrapper) |
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239 |
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240 @command('^debugsparse', [ |
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241 ('I', 'include', False, _('include files in the sparse checkout')), |
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242 ('X', 'exclude', False, _('exclude files in the sparse checkout')), |
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243 ('d', 'delete', False, _('delete an include/exclude rule')), |
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244 ('f', 'force', False, _('allow changing rules even with pending changes')), |
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245 ('', 'enable-profile', False, _('enables the specified profile')), |
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246 ('', 'disable-profile', False, _('disables the specified profile')), |
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247 ('', 'import-rules', False, _('imports rules from a file')), |
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248 ('', 'clear-rules', False, _('clears local include/exclude rules')), |
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249 ('', 'refresh', False, _('updates the working after sparseness changes')), |
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250 ('', 'reset', False, _('makes the repo full again')), |
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251 ] + commands.templateopts, |
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252 _('[--OPTION] PATTERN...')) |
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253 def debugsparse(ui, repo, *pats, **opts): |
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254 """make the current checkout sparse, or edit the existing checkout |
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255 |
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256 The sparse command is used to make the current checkout sparse. |
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257 This means files that don't meet the sparse condition will not be |
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258 written to disk, or show up in any working copy operations. It does |
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259 not affect files in history in any way. |
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260 |
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261 Passing no arguments prints the currently applied sparse rules. |
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262 |
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263 --include and --exclude are used to add and remove files from the sparse |
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264 checkout. The effects of adding an include or exclude rule are applied |
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265 immediately. If applying the new rule would cause a file with pending |
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266 changes to be added or removed, the command will fail. Pass --force to |
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267 force a rule change even with pending changes (the changes on disk will |
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268 be preserved). |
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269 |
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270 --delete removes an existing include/exclude rule. The effects are |
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271 immediate. |
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272 |
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273 --refresh refreshes the files on disk based on the sparse rules. This is |
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274 only necessary if .hg/sparse was changed by hand. |
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275 |
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276 --enable-profile and --disable-profile accept a path to a .hgsparse file. |
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277 This allows defining sparse checkouts and tracking them inside the |
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278 repository. This is useful for defining commonly used sparse checkouts for |
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279 many people to use. As the profile definition changes over time, the sparse |
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280 checkout will automatically be updated appropriately, depending on which |
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281 changeset is checked out. Changes to .hgsparse are not applied until they |
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282 have been committed. |
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283 |
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284 --import-rules accepts a path to a file containing rules in the .hgsparse |
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285 format, allowing you to add --include, --exclude and --enable-profile rules |
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286 in bulk. Like the --include, --exclude and --enable-profile switches, the |
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287 changes are applied immediately. |
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288 |
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289 --clear-rules removes all local include and exclude rules, while leaving |
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290 any enabled profiles in place. |
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291 |
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292 Returns 0 if editing the sparse checkout succeeds. |
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293 """ |
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294 opts = pycompat.byteskwargs(opts) |
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295 include = opts.get('include') |
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296 exclude = opts.get('exclude') |
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297 force = opts.get('force') |
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298 enableprofile = opts.get('enable_profile') |
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299 disableprofile = opts.get('disable_profile') |
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300 importrules = opts.get('import_rules') |
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301 clearrules = opts.get('clear_rules') |
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302 delete = opts.get('delete') |
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303 refresh = opts.get('refresh') |
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304 reset = opts.get('reset') |
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305 count = sum([include, exclude, enableprofile, disableprofile, delete, |
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306 importrules, refresh, clearrules, reset]) |
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307 if count > 1: |
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308 raise error.Abort(_("too many flags specified")) |
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309 |
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310 if count == 0: |
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311 if repo.vfs.exists('sparse'): |
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312 ui.status(repo.vfs.read("sparse") + "\n") |
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313 temporaryincludes = sparse.readtemporaryincludes(repo) |
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314 if temporaryincludes: |
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315 ui.status(_("Temporarily Included Files (for merge/rebase):\n")) |
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316 ui.status(("\n".join(temporaryincludes) + "\n")) |
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317 else: |
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318 ui.status(_('repo is not sparse\n')) |
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319 return |
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320 |
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321 if include or exclude or delete or reset or enableprofile or disableprofile: |
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322 sparse.updateconfig(repo, pats, opts, include=include, exclude=exclude, |
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323 reset=reset, delete=delete, |
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324 enableprofile=enableprofile, |
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325 disableprofile=disableprofile, force=force) |
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326 |
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327 if importrules: |
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328 sparse.importfromfiles(repo, opts, pats, force=force) |
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329 |
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330 if clearrules: |
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331 sparse.clearrules(repo, force=force) |
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332 |
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333 if refresh: |
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334 try: |
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335 wlock = repo.wlock() |
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336 fcounts = map( |
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337 len, |
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338 sparse.refreshwdir(repo, repo.status(), sparse.matcher(repo), |
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339 force=force)) |
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340 sparse.printchanges(ui, opts, added=fcounts[0], dropped=fcounts[1], |
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341 conflicting=fcounts[2]) |
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342 finally: |
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343 wlock.release() |