annotate hgext/sparse.py @ 50308:cab3defe6d3b stable

transaction: raise on backup restoration error A few line above, similar errors in the truncation code result in raising the associated exception. We should do the same here. This means the transaction recover is more strict now, which might be a problem when running `hg recover` in a share different from the one where the transaction fails. However this has always been a problem and need to be be addressed independently.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Wed, 15 Mar 2023 12:13:08 +0100
parents b1147450c55c
children 54d3a6dc2426
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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
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75 from mercurial.i18n import _
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76 from mercurial.pycompat import setattr
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77 from mercurial import (
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78 cmdutil,
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79 commands,
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80 error,
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81 extensions,
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82 logcmdutil,
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83 merge as mergemod,
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84 pycompat,
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85 registrar,
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86 sparse,
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87 util,
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88 )
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89
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90 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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91 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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92 # be specifying the version(s) of Mercurial they are tested with, or
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93 # leave the attribute unspecified.
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94 testedwith = b'ships-with-hg-core'
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95
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96 cmdtable = {}
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97 command = registrar.command(cmdtable)
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98
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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
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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(
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122 _(b"type '%s' has no property '%s'") % (origcls, propname)
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123 )
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124
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125
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126 def _setuplog(ui):
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127 entry = commands.table[b'log|history']
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128 entry[1].append(
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129 (
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130 b'',
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131 b'sparse',
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132 None,
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133 b"limit to changesets affecting the sparse checkout",
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134 )
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135 )
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136
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137 def _initialrevs(orig, repo, wopts):
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138 revs = orig(repo, wopts)
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139 if wopts.opts.get(b'sparse'):
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140 sparsematch = sparse.matcher(repo)
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141
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142 def ctxmatch(rev):
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143 ctx = repo[rev]
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144 return any(f for f in ctx.files() if sparsematch(f))
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145
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146 revs = revs.filter(ctxmatch)
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147 return revs
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148
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149 extensions.wrapfunction(logcmdutil, b'_initialrevs', _initialrevs)
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150
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151
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152 def _clonesparsecmd(orig, ui, repo, *args, **opts):
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153 include = opts.get('include')
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154 exclude = opts.get('exclude')
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155 enableprofile = opts.get('enable_profile')
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156 narrow_pat = opts.get('narrow')
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157
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158 # if --narrow is passed, it means they are includes and excludes for narrow
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159 # clone
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160 if not narrow_pat and (include or exclude or enableprofile):
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161
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162 def clonesparse(orig, ctx, *args, **kwargs):
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163 sparse.updateconfig(
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164 ctx.repo().unfiltered(),
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165 {},
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166 include=include,
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167 exclude=exclude,
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168 enableprofile=enableprofile,
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169 usereporootpaths=True,
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170 )
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171 return orig(ctx, *args, **kwargs)
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172
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173 extensions.wrapfunction(mergemod, b'update', clonesparse)
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174 return orig(ui, repo, *args, **opts)
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175
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176
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177 def _setupclone(ui):
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178 entry = commands.table[b'clone']
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179 entry[1].append((b'', b'enable-profile', [], b'enable a sparse profile'))
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180 entry[1].append((b'', b'include', [], b'include sparse pattern'))
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181 entry[1].append((b'', b'exclude', [], b'exclude sparse pattern'))
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182 extensions.wrapcommand(commands.table, b'clone', _clonesparsecmd)
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183
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184
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185 def _setupadd(ui):
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186 entry = commands.table[b'add']
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187 entry[1].append(
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188 (
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189 b's',
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190 b'sparse',
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191 None,
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192 b'also include directories of added files in sparse config',
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193 )
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194 )
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195
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196 def _add(orig, ui, repo, *pats, **opts):
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197 if opts.get('sparse'):
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198 dirs = set()
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199 for pat in pats:
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200 dirname, basename = util.split(pat)
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201 dirs.add(dirname)
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202 sparse.updateconfig(repo, opts, include=list(dirs))
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203 return orig(ui, repo, *pats, **opts)
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204
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205 extensions.wrapcommand(commands.table, b'add', _add)
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206
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207
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208 @command(
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209 b'debugsparse',
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210 [
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211 (
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212 b'I',
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213 b'include',
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214 [],
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215 _(b'include files in the sparse checkout'),
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216 _(b'PATTERN'),
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217 ),
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218 (
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219 b'X',
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220 b'exclude',
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221 [],
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222 _(b'exclude files in the sparse checkout'),
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223 _(b'PATTERN'),
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224 ),
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225 (
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226 b'd',
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227 b'delete',
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228 [],
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229 _(b'delete an include/exclude rule'),
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230 _(b'PATTERN'),
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231 ),
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232 (
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233 b'f',
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234 b'force',
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235 False,
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236 _(b'allow changing rules even with pending changes'),
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237 ),
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238 (
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239 b'',
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240 b'enable-profile',
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241 [],
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242 _(b'enables the specified profile'),
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243 _(b'PATTERN'),
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244 ),
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245 (
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246 b'',
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247 b'disable-profile',
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248 [],
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249 _(b'disables the specified profile'),
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250 _(b'PATTERN'),
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251 ),
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252 (
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253 b'',
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254 b'import-rules',
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255 [],
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256 _(b'imports rules from a file'),
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257 _(b'PATTERN'),
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258 ),
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259 (b'', b'clear-rules', False, _(b'clears local include/exclude rules')),
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260 (
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261 b'',
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262 b'refresh',
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263 False,
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264 _(b'updates the working after sparseness changes'),
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265 ),
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266 (b'', b'reset', False, _(b'makes the repo full again')),
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267 ]
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268 + commands.templateopts,
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269 _(b'[--OPTION]'),
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270 helpbasic=True,
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271 )
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272 def debugsparse(ui, repo, **opts):
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273 """make the current checkout sparse, or edit the existing checkout
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274
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275 The sparse command is used to make the current checkout sparse.
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276 This means files that don't meet the sparse condition will not be
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277 written to disk, or show up in any working copy operations. It does
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278 not affect files in history in any way.
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279
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280 Passing no arguments prints the currently applied sparse rules.
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281
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282 --include and --exclude are used to add and remove files from the sparse
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283 checkout. The effects of adding an include or exclude rule are applied
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284 immediately. If applying the new rule would cause a file with pending
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285 changes to be added or removed, the command will fail. Pass --force to
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286 force a rule change even with pending changes (the changes on disk will
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287 be preserved).
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288
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289 --delete removes an existing include/exclude rule. The effects are
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290 immediate.
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291
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292 --refresh refreshes the files on disk based on the sparse rules. This is
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293 only necessary if .hg/sparse was changed by hand.
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294
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295 --enable-profile and --disable-profile accept a path to a .hgsparse file.
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296 This allows defining sparse checkouts and tracking them inside the
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297 repository. This is useful for defining commonly used sparse checkouts for
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298 many people to use. As the profile definition changes over time, the sparse
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299 checkout will automatically be updated appropriately, depending on which
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300 changeset is checked out. Changes to .hgsparse are not applied until they
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301 have been committed.
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302
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303 --import-rules accepts a path to a file containing rules in the .hgsparse
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304 format, allowing you to add --include, --exclude and --enable-profile rules
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305 in bulk. Like the --include, --exclude and --enable-profile switches, the
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306 changes are applied immediately.
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307
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308 --clear-rules removes all local include and exclude rules, while leaving
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309 any enabled profiles in place.
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310
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311 Returns 0 if editing the sparse checkout succeeds.
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312 """
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313 opts = pycompat.byteskwargs(opts)
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314 include = opts.get(b'include')
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315 exclude = opts.get(b'exclude')
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316 force = opts.get(b'force')
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317 enableprofile = opts.get(b'enable_profile')
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318 disableprofile = opts.get(b'disable_profile')
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319 importrules = opts.get(b'import_rules')
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320 clearrules = opts.get(b'clear_rules')
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321 delete = opts.get(b'delete')
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322 refresh = opts.get(b'refresh')
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323 reset = opts.get(b'reset')
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324 action = cmdutil.check_at_most_one_arg(
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325 opts, b'import_rules', b'clear_rules', b'refresh'
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326 )
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327 updateconfig = bool(
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328 include or exclude or delete or reset or enableprofile or disableprofile
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329 )
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330 count = sum([updateconfig, bool(action)])
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331 if count > 1:
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332 raise error.Abort(_(b"too many flags specified"))
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333
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334 # enable sparse on repo even if the requirements is missing.
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335 repo._has_sparse = True
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336
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337 if count == 0:
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338 if repo.vfs.exists(b'sparse'):
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339 ui.status(repo.vfs.read(b"sparse") + b"\n")
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340 temporaryincludes = sparse.readtemporaryincludes(repo)
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341 if temporaryincludes:
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342 ui.status(
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343 _(b"Temporarily Included Files (for merge/rebase):\n")
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344 )
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345 ui.status((b"\n".join(temporaryincludes) + b"\n"))
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346 return
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347 else:
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348 raise error.Abort(
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349 _(
43077
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350 b'the debugsparse command is only supported on'
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351 b' sparse repositories'
43076
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352 )
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353 )
33289
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354
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355 if updateconfig:
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356 sparse.updateconfig(
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diff changeset
357 repo,
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Augie Fackler <augie@google.com>
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358 opts,
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Augie Fackler <augie@google.com>
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359 include=include,
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360 exclude=exclude,
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Augie Fackler <augie@google.com>
parents: 42456
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361 reset=reset,
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Augie Fackler <augie@google.com>
parents: 42456
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362 delete=delete,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
diff changeset
363 enableprofile=enableprofile,
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Augie Fackler <augie@google.com>
parents: 42456
diff changeset
364 disableprofile=disableprofile,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
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365 force=force,
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Augie Fackler <augie@google.com>
parents: 42456
diff changeset
366 )
33289
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367
abd7dedbaa36 sparse: vendor Facebook-developed extension
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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368 if importrules:
48737
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parents: 47914
diff changeset
369 sparse.importfromfiles(repo, opts, importrules, force=force)
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parents:
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370
abd7dedbaa36 sparse: vendor Facebook-developed extension
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parents:
diff changeset
371 if clearrules:
33354
4695f1829045 sparse: move code for clearing rules to core
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33353
diff changeset
372 sparse.clearrules(repo, force=force)
33289
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parents:
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373
abd7dedbaa36 sparse: vendor Facebook-developed extension
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
374 if refresh:
abd7dedbaa36 sparse: vendor Facebook-developed extension
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
375 try:
abd7dedbaa36 sparse: vendor Facebook-developed extension
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
376 wlock = repo.wlock()
49862
b1147450c55c sparse: fix a py2 based usage of `map()`
Matt Harbison <matt_harbison@yahoo.com>
parents: 49360
diff changeset
377 fcounts = pycompat.maplist(
33289
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parents:
diff changeset
378 len,
43076
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parents: 42456
diff changeset
379 sparse.refreshwdir(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
diff changeset
380 repo, repo.status(), sparse.matcher(repo), force=force
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
diff changeset
381 ),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
diff changeset
382 )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
diff changeset
383 sparse.printchanges(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
diff changeset
384 ui,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
diff changeset
385 opts,
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Augie Fackler <augie@google.com>
parents: 42456
diff changeset
386 added=fcounts[0],
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42456
diff changeset
387 dropped=fcounts[1],
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Augie Fackler <augie@google.com>
parents: 42456
diff changeset
388 conflicting=fcounts[2],
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Augie Fackler <augie@google.com>
parents: 42456
diff changeset
389 )
33289
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parents:
diff changeset
390 finally:
abd7dedbaa36 sparse: vendor Facebook-developed extension
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parents:
diff changeset
391 wlock.release()
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parents: 48875
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392
216f273b6b30 sparse: start moving away from the global variable for detection of usage
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48875
diff changeset
393 del repo._has_sparse