annotate hgext/sparse.py @ 34060:e267d4ee4f2d

check-code: forbid using bash in shebang Some platforms (ex. FreeBSD) do not have `bash` by default. Therefore it should not be used in test scripts. Differential Revision: https://phab.mercurial-scm.org/D609
author Jun Wu <quark@fb.com>
date Fri, 01 Sep 2017 15:47:32 -0700
parents e1c56486d1aa
children d8d06a930d60
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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 cmdutil,
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79 commands,
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80 dirstate,
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81 error,
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82 extensions,
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83 hg,
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84 match as matchmod,
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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 = '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 def extsetup(ui):
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100 sparse.enabled = True
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101
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102 _setupclone(ui)
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103 _setuplog(ui)
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104 _setupadd(ui)
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105 _setupdirstate(ui)
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106
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107 def replacefilecache(cls, propname, replacement):
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108 """Replace a filecache property with a new class. This allows changing the
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109 cache invalidation condition."""
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110 origcls = cls
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111 assert callable(replacement)
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112 while cls is not object:
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113 if propname in cls.__dict__:
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114 orig = cls.__dict__[propname]
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115 setattr(cls, propname, replacement(orig))
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116 break
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117 cls = cls.__bases__[0]
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118
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119 if cls is object:
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120 raise AttributeError(_("type '%s' has no property '%s'") % (origcls,
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121 propname))
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122
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123 def _setuplog(ui):
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124 entry = commands.table['^log|history']
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125 entry[1].append(('', 'sparse', None,
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126 "limit to changesets affecting the sparse checkout"))
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127
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128 def _logrevs(orig, repo, opts):
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129 revs = orig(repo, opts)
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130 if opts.get('sparse'):
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131 sparsematch = sparse.matcher(repo)
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132 def ctxmatch(rev):
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133 ctx = repo[rev]
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134 return any(f for f in ctx.files() if sparsematch(f))
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135 revs = revs.filter(ctxmatch)
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136 return revs
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137 extensions.wrapfunction(cmdutil, '_logrevs', _logrevs)
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138
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139 def _clonesparsecmd(orig, ui, repo, *args, **opts):
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140 include_pat = opts.get('include')
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141 exclude_pat = opts.get('exclude')
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142 enableprofile_pat = opts.get('enable_profile')
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143 include = exclude = enableprofile = False
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144 if include_pat:
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145 pat = include_pat
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146 include = True
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147 if exclude_pat:
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148 pat = exclude_pat
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149 exclude = True
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150 if enableprofile_pat:
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151 pat = enableprofile_pat
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152 enableprofile = True
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153 if sum([include, exclude, enableprofile]) > 1:
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154 raise error.Abort(_("too many flags specified."))
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155 if include or exclude or enableprofile:
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156 def clonesparse(orig, self, node, overwrite, *args, **kwargs):
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157 sparse.updateconfig(self.unfiltered(), pat, {}, include=include,
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158 exclude=exclude, enableprofile=enableprofile,
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159 usereporootpaths=True)
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160 return orig(self, node, overwrite, *args, **kwargs)
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161 extensions.wrapfunction(hg, 'updaterepo', clonesparse)
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162 return orig(ui, repo, *args, **opts)
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163
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164 def _setupclone(ui):
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165 entry = commands.table['^clone']
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166 entry[1].append(('', 'enable-profile', [],
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167 'enable a sparse profile'))
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168 entry[1].append(('', 'include', [],
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169 'include sparse pattern'))
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170 entry[1].append(('', 'exclude', [],
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171 'exclude sparse pattern'))
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172 extensions.wrapcommand(commands.table, 'clone', _clonesparsecmd)
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173
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174 def _setupadd(ui):
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175 entry = commands.table['^add']
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176 entry[1].append(('s', 'sparse', None,
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177 'also include directories of added files in sparse config'))
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178
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179 def _add(orig, ui, repo, *pats, **opts):
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180 if opts.get('sparse'):
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181 dirs = set()
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182 for pat in pats:
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183 dirname, basename = util.split(pat)
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184 dirs.add(dirname)
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185 sparse.updateconfig(repo, list(dirs), opts, include=True)
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186 return orig(ui, repo, *pats, **opts)
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187
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188 extensions.wrapcommand(commands.table, 'add', _add)
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189
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190 def _setupdirstate(ui):
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191 """Modify the dirstate to prevent stat'ing excluded files,
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192 and to prevent modifications to files outside the checkout.
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193 """
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194
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195 def walk(orig, self, match, subrepos, unknown, ignored, full=True):
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196 match = matchmod.intersectmatchers(match, self._sparsematcher)
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197 return orig(self, match, subrepos, unknown, ignored, full)
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198
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199 extensions.wrapfunction(dirstate.dirstate, 'walk', walk)
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200
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201 # dirstate.rebuild should not add non-matching files
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202 def _rebuild(orig, self, parent, allfiles, changedfiles=None):
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203 matcher = self._sparsematcher
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204 if not matcher.always():
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205 allfiles = allfiles.matches(matcher)
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206 if changedfiles:
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207 changedfiles = [f for f in changedfiles if matcher(f)]
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208
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209 if changedfiles is not None:
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210 # In _rebuild, these files will be deleted from the dirstate
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211 # when they are not found to be in allfiles
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212 dirstatefilestoremove = set(f for f in self if not matcher(f))
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213 changedfiles = dirstatefilestoremove.union(changedfiles)
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214
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215 return orig(self, parent, allfiles, changedfiles)
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216 extensions.wrapfunction(dirstate.dirstate, 'rebuild', _rebuild)
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217
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218 # Prevent adding files that are outside the sparse checkout
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219 editfuncs = ['normal', 'add', 'normallookup', 'copy', 'remove', 'merge']
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220 hint = _('include file with `hg debugsparse --include <pattern>` or use ' +
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221 '`hg add -s <file>` to include file directory while adding')
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222 for func in editfuncs:
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223 def _wrapper(orig, self, *args):
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224 sparsematch = self._sparsematcher
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225 if not sparsematch.always():
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226 for f in args:
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227 if (f is not None and not sparsematch(f) and
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228 f not in self):
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229 raise error.Abort(_("cannot add '%s' - it is outside "
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230 "the sparse checkout") % f,
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231 hint=hint)
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232 return orig(self, *args)
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233 extensions.wrapfunction(dirstate.dirstate, func, _wrapper)
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234
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235 @command('^debugsparse', [
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236 ('I', 'include', False, _('include files in the sparse checkout')),
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237 ('X', 'exclude', False, _('exclude files in the sparse checkout')),
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238 ('d', 'delete', False, _('delete an include/exclude rule')),
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239 ('f', 'force', False, _('allow changing rules even with pending changes')),
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240 ('', 'enable-profile', False, _('enables the specified profile')),
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diff changeset
241 ('', 'disable-profile', False, _('disables the specified profile')),
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242 ('', 'import-rules', False, _('imports rules from a file')),
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243 ('', 'clear-rules', False, _('clears local include/exclude rules')),
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244 ('', 'refresh', False, _('updates the working after sparseness changes')),
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245 ('', 'reset', False, _('makes the repo full again')),
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246 ] + commands.templateopts,
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247 _('[--OPTION] PATTERN...'))
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248 def debugsparse(ui, repo, *pats, **opts):
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249 """make the current checkout sparse, or edit the existing checkout
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250
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251 The sparse command is used to make the current checkout sparse.
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252 This means files that don't meet the sparse condition will not be
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253 written to disk, or show up in any working copy operations. It does
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254 not affect files in history in any way.
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255
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256 Passing no arguments prints the currently applied sparse rules.
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257
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258 --include and --exclude are used to add and remove files from the sparse
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259 checkout. The effects of adding an include or exclude rule are applied
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diff changeset
260 immediately. If applying the new rule would cause a file with pending
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261 changes to be added or removed, the command will fail. Pass --force to
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262 force a rule change even with pending changes (the changes on disk will
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263 be preserved).
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264
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265 --delete removes an existing include/exclude rule. The effects are
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266 immediate.
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267
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268 --refresh refreshes the files on disk based on the sparse rules. This is
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269 only necessary if .hg/sparse was changed by hand.
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270
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271 --enable-profile and --disable-profile accept a path to a .hgsparse file.
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272 This allows defining sparse checkouts and tracking them inside the
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diff changeset
273 repository. This is useful for defining commonly used sparse checkouts for
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diff changeset
274 many people to use. As the profile definition changes over time, the sparse
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275 checkout will automatically be updated appropriately, depending on which
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276 changeset is checked out. Changes to .hgsparse are not applied until they
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277 have been committed.
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278
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279 --import-rules accepts a path to a file containing rules in the .hgsparse
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280 format, allowing you to add --include, --exclude and --enable-profile rules
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diff changeset
281 in bulk. Like the --include, --exclude and --enable-profile switches, the
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282 changes are applied immediately.
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283
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284 --clear-rules removes all local include and exclude rules, while leaving
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285 any enabled profiles in place.
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286
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287 Returns 0 if editing the sparse checkout succeeds.
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288 """
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289 include = opts.get('include')
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290 exclude = opts.get('exclude')
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291 force = opts.get('force')
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292 enableprofile = opts.get('enable_profile')
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293 disableprofile = opts.get('disable_profile')
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294 importrules = opts.get('import_rules')
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295 clearrules = opts.get('clear_rules')
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296 delete = opts.get('delete')
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297 refresh = opts.get('refresh')
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298 reset = opts.get('reset')
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299 count = sum([include, exclude, enableprofile, disableprofile, delete,
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300 importrules, refresh, clearrules, reset])
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301 if count > 1:
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302 raise error.Abort(_("too many flags specified"))
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303
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304 if count == 0:
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305 if repo.vfs.exists('sparse'):
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306 ui.status(repo.vfs.read("sparse") + "\n")
33304
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307 temporaryincludes = sparse.readtemporaryincludes(repo)
33289
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308 if temporaryincludes:
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309 ui.status(_("Temporarily Included Files (for merge/rebase):\n"))
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310 ui.status(("\n".join(temporaryincludes) + "\n"))
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311 else:
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312 ui.status(_('repo is not sparse\n'))
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313 return
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parents:
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314
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parents:
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315 if include or exclude or delete or reset or enableprofile or disableprofile:
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parents: 33373
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316 sparse.updateconfig(repo, pats, opts, include=include, exclude=exclude,
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317 reset=reset, delete=delete,
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318 enableprofile=enableprofile,
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parents: 33373
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319 disableprofile=disableprofile, force=force)
33289
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parents:
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320
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parents:
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321 if importrules:
33371
c6415195fa78 sparse: move code for importing rules from files into core
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parents: 33370
diff changeset
322 sparse.importfromfiles(repo, opts, pats, force=force)
33289
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parents:
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323
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parents:
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324 if clearrules:
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parents: 33353
diff changeset
325 sparse.clearrules(repo, force=force)
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parents:
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326
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parents:
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327 if refresh:
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parents:
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328 try:
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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329 wlock = repo.wlock()
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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330 fcounts = map(
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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331 len,
33324
33d0859c37bd sparse: move working directory refreshing into core
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33323
diff changeset
332 sparse.refreshwdir(repo, repo.status(), sparse.matcher(repo),
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parents: 33323
diff changeset
333 force=force))
33355
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33354
diff changeset
334 sparse.printchanges(ui, opts, added=fcounts[0], dropped=fcounts[1],
9087f9997f42 sparse: move printing of sparse config changes function into core
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33354
diff changeset
335 conflicting=fcounts[2])
33289
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parents:
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336 finally:
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parents:
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337 wlock.release()