annotate hgext/sparse.py @ 41671:34ae00a14783

py3: use raw strings and %d for formatting Before the string compares on Python 3 failed because we were comparing bytes to str. Using raw strings ensures we are always comparing str. While we're here, also use %d to format integers. Differential Revision: https://phab.mercurial-scm.org/D5925
author Gregory Szorc <gregory.szorc@gmail.com>
date Sun, 10 Feb 2019 14:04:08 -0800
parents b05eb98a6b67
children ddbebce94665
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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 narrow_pat = opts.get(r'narrow')
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145 include = exclude = enableprofile = False
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146 if include_pat:
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147 pat = include_pat
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148 include = True
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149 if exclude_pat:
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150 pat = exclude_pat
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151 exclude = True
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152 if enableprofile_pat:
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153 pat = enableprofile_pat
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154 enableprofile = True
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155 if sum([include, exclude, enableprofile]) > 1:
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diff changeset
156 raise error.Abort(_("too many flags specified."))
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157 # if --narrow is passed, it means they are includes and excludes for narrow
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158 # clone
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159 if not narrow_pat and (include or exclude or enableprofile):
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160 def clonesparse(orig, self, node, overwrite, *args, **kwargs):
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161 sparse.updateconfig(self.unfiltered(), pat, {}, include=include,
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162 exclude=exclude, enableprofile=enableprofile,
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163 usereporootpaths=True)
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164 return orig(self, node, overwrite, *args, **kwargs)
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165 extensions.wrapfunction(hg, 'updaterepo', clonesparse)
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166 return orig(ui, repo, *args, **opts)
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167
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168 def _setupclone(ui):
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169 entry = commands.table['clone']
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170 entry[1].append(('', 'enable-profile', [],
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171 'enable a sparse profile'))
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172 entry[1].append(('', 'include', [],
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173 'include sparse pattern'))
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174 entry[1].append(('', 'exclude', [],
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175 'exclude sparse pattern'))
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176 extensions.wrapcommand(commands.table, 'clone', _clonesparsecmd)
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177
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178 def _setupadd(ui):
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179 entry = commands.table['add']
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180 entry[1].append(('s', 'sparse', None,
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181 'also include directories of added files in sparse config'))
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182
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183 def _add(orig, ui, repo, *pats, **opts):
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184 if opts.get(r'sparse'):
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185 dirs = set()
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186 for pat in pats:
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187 dirname, basename = util.split(pat)
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188 dirs.add(dirname)
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189 sparse.updateconfig(repo, list(dirs), opts, include=True)
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190 return orig(ui, repo, *pats, **opts)
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191
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192 extensions.wrapcommand(commands.table, 'add', _add)
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193
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194 def _setupdirstate(ui):
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195 """Modify the dirstate to prevent stat'ing excluded files,
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196 and to prevent modifications to files outside the checkout.
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197 """
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198
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199 def walk(orig, self, match, subrepos, unknown, ignored, full=True):
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200 # hack to not exclude explicitly-specified paths so that they can
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201 # be warned later on e.g. dirstate.add()
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202 em = matchmod.exact(match._root, match._cwd, match.files())
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203 sm = matchmod.unionmatcher([self._sparsematcher, em])
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204 match = matchmod.intersectmatchers(match, sm)
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205 return orig(self, match, subrepos, unknown, ignored, full)
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206
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207 extensions.wrapfunction(dirstate.dirstate, 'walk', walk)
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208
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209 # dirstate.rebuild should not add non-matching files
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210 def _rebuild(orig, self, parent, allfiles, changedfiles=None):
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211 matcher = self._sparsematcher
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212 if not matcher.always():
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213 allfiles = [f for f in allfiles if matcher(f)]
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214 if changedfiles:
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215 changedfiles = [f for f in changedfiles if matcher(f)]
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216
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217 if changedfiles is not None:
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218 # In _rebuild, these files will be deleted from the dirstate
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219 # when they are not found to be in allfiles
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220 dirstatefilestoremove = set(f for f in self if not matcher(f))
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221 changedfiles = dirstatefilestoremove.union(changedfiles)
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222
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223 return orig(self, parent, allfiles, changedfiles)
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224 extensions.wrapfunction(dirstate.dirstate, 'rebuild', _rebuild)
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225
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226 # Prevent adding files that are outside the sparse checkout
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227 editfuncs = ['normal', 'add', 'normallookup', 'copy', 'remove', 'merge']
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228 hint = _('include file with `hg debugsparse --include <pattern>` or use ' +
33289
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229 '`hg add -s <file>` to include file directory while adding')
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diff changeset
230 for func in editfuncs:
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diff changeset
231 def _wrapper(orig, self, *args):
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232 sparsematch = self._sparsematcher
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diff changeset
233 if not sparsematch.always():
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234 for f in args:
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diff changeset
235 if (f is not None and not sparsematch(f) and
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diff changeset
236 f not in self):
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237 raise error.Abort(_("cannot add '%s' - it is outside "
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238 "the sparse checkout") % f,
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diff changeset
239 hint=hint)
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diff changeset
240 return orig(self, *args)
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241 extensions.wrapfunction(dirstate.dirstate, func, _wrapper)
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242
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diff changeset
243 @command('debugsparse', [
33289
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244 ('I', 'include', False, _('include files in the sparse checkout')),
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245 ('X', 'exclude', False, _('exclude files in the sparse checkout')),
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246 ('d', 'delete', False, _('delete an include/exclude rule')),
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247 ('f', 'force', False, _('allow changing rules even with pending changes')),
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248 ('', 'enable-profile', False, _('enables the specified profile')),
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249 ('', 'disable-profile', False, _('disables the specified profile')),
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250 ('', 'import-rules', False, _('imports rules from a file')),
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251 ('', 'clear-rules', False, _('clears local include/exclude rules')),
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252 ('', 'refresh', False, _('updates the working after sparseness changes')),
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253 ('', 'reset', False, _('makes the repo full again')),
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diff changeset
254 ] + commands.templateopts,
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255 _('[--OPTION] PATTERN...'),
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diff changeset
256 helpbasic=True)
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257 def debugsparse(ui, repo, *pats, **opts):
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258 """make the current checkout sparse, or edit the existing checkout
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259
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260 The sparse command is used to make the current checkout sparse.
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diff changeset
261 This means files that don't meet the sparse condition will not be
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262 written to disk, or show up in any working copy operations. It does
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263 not affect files in history in any way.
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264
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265 Passing no arguments prints the currently applied sparse rules.
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266
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267 --include and --exclude are used to add and remove files from the sparse
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268 checkout. The effects of adding an include or exclude rule are applied
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269 immediately. If applying the new rule would cause a file with pending
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270 changes to be added or removed, the command will fail. Pass --force to
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271 force a rule change even with pending changes (the changes on disk will
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272 be preserved).
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273
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274 --delete removes an existing include/exclude rule. The effects are
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275 immediate.
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276
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277 --refresh refreshes the files on disk based on the sparse rules. This is
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278 only necessary if .hg/sparse was changed by hand.
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279
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280 --enable-profile and --disable-profile accept a path to a .hgsparse file.
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281 This allows defining sparse checkouts and tracking them inside the
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diff changeset
282 repository. This is useful for defining commonly used sparse checkouts for
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diff changeset
283 many people to use. As the profile definition changes over time, the sparse
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284 checkout will automatically be updated appropriately, depending on which
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diff changeset
285 changeset is checked out. Changes to .hgsparse are not applied until they
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parents:
diff changeset
286 have been committed.
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287
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288 --import-rules accepts a path to a file containing rules in the .hgsparse
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289 format, allowing you to add --include, --exclude and --enable-profile rules
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290 in bulk. Like the --include, --exclude and --enable-profile switches, the
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291 changes are applied immediately.
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292
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293 --clear-rules removes all local include and exclude rules, while leaving
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294 any enabled profiles in place.
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295
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296 Returns 0 if editing the sparse checkout succeeds.
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297 """
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298 opts = pycompat.byteskwargs(opts)
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299 include = opts.get('include')
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300 exclude = opts.get('exclude')
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301 force = opts.get('force')
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302 enableprofile = opts.get('enable_profile')
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303 disableprofile = opts.get('disable_profile')
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304 importrules = opts.get('import_rules')
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305 clearrules = opts.get('clear_rules')
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306 delete = opts.get('delete')
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307 refresh = opts.get('refresh')
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308 reset = opts.get('reset')
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309 count = sum([include, exclude, enableprofile, disableprofile, delete,
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310 importrules, refresh, clearrules, reset])
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311 if count > 1:
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312 raise error.Abort(_("too many flags specified"))
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313
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314 if count == 0:
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315 if repo.vfs.exists('sparse'):
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316 ui.status(repo.vfs.read("sparse") + "\n")
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317 temporaryincludes = sparse.readtemporaryincludes(repo)
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318 if temporaryincludes:
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319 ui.status(_("Temporarily Included Files (for merge/rebase):\n"))
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320 ui.status(("\n".join(temporaryincludes) + "\n"))
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321 else:
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322 ui.status(_('repo is not sparse\n'))
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323 return
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324
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325 if include or exclude or delete or reset or enableprofile or disableprofile:
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326 sparse.updateconfig(repo, pats, opts, include=include, exclude=exclude,
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327 reset=reset, delete=delete,
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328 enableprofile=enableprofile,
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329 disableprofile=disableprofile, force=force)
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330
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331 if importrules:
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332 sparse.importfromfiles(repo, opts, pats, force=force)
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333
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334 if clearrules:
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335 sparse.clearrules(repo, force=force)
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336
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337 if refresh:
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338 try:
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339 wlock = repo.wlock()
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340 fcounts = map(
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341 len,
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342 sparse.refreshwdir(repo, repo.status(), sparse.matcher(repo),
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343 force=force))
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344 sparse.printchanges(ui, opts, added=fcounts[0], dropped=fcounts[1],
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345 conflicting=fcounts[2])
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346 finally:
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347 wlock.release()