Mercurial > hg
annotate hgext/narrow/narrowcommands.py @ 39247:f4d4bd8c8911
narrow: add a --narrowspec flag to clone command
This patch adds a --narrowspec flag to `hg clone` command in narrow extension
which can be used to read a file and parse narrowspecs from it and use it while
cloning a repository.
The --narrowspec flag assumes that the user wanted to narrow the clone.
Tests are added both for ellipsis and non-ellipsis mode.
Differential Revision: https://phab.mercurial-scm.org/D4156
author | Pulkit Goyal <pulkit@yandex-team.ru> |
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date | Wed, 08 Aug 2018 13:56:53 +0300 |
parents | a232e6744ba3 |
children | c8e4eae84808 |
rev | line source |
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1 # narrowcommands.py - command modifications for narrowhg extension |
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2 # |
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3 # Copyright 2017 Google, 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 from __future__ import absolute_import |
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8 |
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9 import itertools |
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10 import os |
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11 |
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12 from mercurial.i18n import _ |
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13 from mercurial import ( |
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14 cmdutil, |
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15 commands, |
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16 discovery, |
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17 error, |
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18 exchange, |
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19 extensions, |
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20 hg, |
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21 merge, |
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22 narrowspec, |
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23 node, |
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24 pycompat, |
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25 registrar, |
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26 repair, |
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27 repository, |
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28 repoview, |
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29 sparse, |
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30 util, |
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31 ) |
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32 |
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33 from . import ( |
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34 narrowbundle2, |
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35 ) |
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36 |
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37 table = {} |
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38 command = registrar.command(table) |
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39 |
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40 def setup(): |
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41 """Wraps user-facing mercurial commands with narrow-aware versions.""" |
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42 |
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43 entry = extensions.wrapcommand(commands.table, 'clone', clonenarrowcmd) |
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44 entry[1].append(('', 'narrow', None, |
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45 _("create a narrow clone of select files"))) |
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46 entry[1].append(('', 'depth', '', |
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47 _("limit the history fetched by distance from heads"))) |
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48 entry[1].append(('', 'narrowspec', '', |
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49 _("read narrowspecs from file"))) |
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50 # TODO(durin42): unify sparse/narrow --include/--exclude logic a bit |
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51 if 'sparse' not in extensions.enabled(): |
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52 entry[1].append(('', 'include', [], |
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53 _("specifically fetch this file/directory"))) |
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54 entry[1].append( |
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55 ('', 'exclude', [], |
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56 _("do not fetch this file/directory, even if included"))) |
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57 |
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58 entry = extensions.wrapcommand(commands.table, 'pull', pullnarrowcmd) |
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59 entry[1].append(('', 'depth', '', |
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60 _("limit the history fetched by distance from heads"))) |
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61 |
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62 extensions.wrapcommand(commands.table, 'archive', archivenarrowcmd) |
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63 |
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64 def expandpull(pullop, includepats, excludepats): |
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65 if not narrowspec.needsexpansion(includepats): |
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66 return includepats, excludepats |
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67 |
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68 heads = pullop.heads or pullop.rheads |
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69 includepats, excludepats = pullop.remote.expandnarrow( |
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70 includepats, excludepats, heads) |
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71 pullop.repo.ui.debug('Expanded narrowspec to inc=%s, exc=%s\n' % ( |
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72 includepats, excludepats)) |
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73 return set(includepats), set(excludepats) |
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74 |
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75 def clonenarrowcmd(orig, ui, repo, *args, **opts): |
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76 """Wraps clone command, so 'hg clone' first wraps localrepo.clone().""" |
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77 opts = pycompat.byteskwargs(opts) |
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78 wrappedextraprepare = util.nullcontextmanager() |
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79 opts_narrow = opts['narrow'] |
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80 narrowspecfile = opts['narrowspec'] |
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81 |
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82 if narrowspecfile: |
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83 filepath = os.path.join(pycompat.getcwd(), narrowspecfile) |
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84 ui.status(_("reading narrowspec from '%s'\n") % filepath) |
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85 try: |
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86 fp = open(filepath, 'rb') |
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87 except IOError: |
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88 raise error.Abort(_("file '%s' not found") % filepath) |
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89 |
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90 includes, excludes, profiles = sparse.parseconfig(ui, fp.read(), |
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91 'narrow') |
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92 if profiles: |
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93 raise error.Abort(_("cannot specify other files using '%include' in" |
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94 " narrowspec")) |
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95 |
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96 # narrowspec is passed so we should assume that user wants narrow clone |
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97 opts_narrow = True |
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98 opts['include'].extend(includes) |
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99 opts['exclude'].extend(excludes) |
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100 |
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101 if opts_narrow: |
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102 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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103 # Create narrow spec patterns from clone flags |
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104 includepats = narrowspec.parsepatterns(opts['include']) |
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105 excludepats = narrowspec.parsepatterns(opts['exclude']) |
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106 |
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107 # If necessary, ask the server to expand the narrowspec. |
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108 includepats, excludepats = expandpull( |
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109 pullop, includepats, excludepats) |
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110 |
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111 if not includepats and excludepats: |
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112 # If nothing was included, we assume the user meant to include |
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113 # everything, except what they asked to exclude. |
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114 includepats = {'path:.'} |
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115 |
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116 pullop.repo.setnarrowpats(includepats, excludepats) |
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117 |
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118 # This will populate 'includepats' etc with the values from the |
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119 # narrowspec we just saved. |
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120 orig(pullop, kwargs) |
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121 |
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122 if opts.get('depth'): |
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123 kwargs['depth'] = opts['depth'] |
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124 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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125 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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126 |
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127 def pullnarrow(orig, repo, *args, **kwargs): |
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128 if opts_narrow: |
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129 repo.requirements.add(repository.NARROW_REQUIREMENT) |
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130 repo._writerequirements() |
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131 |
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132 return orig(repo, *args, **kwargs) |
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133 |
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134 wrappedpull = extensions.wrappedfunction(exchange, 'pull', pullnarrow) |
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135 |
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136 with wrappedextraprepare, wrappedpull: |
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137 return orig(ui, repo, *args, **pycompat.strkwargs(opts)) |
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138 |
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139 def pullnarrowcmd(orig, ui, repo, *args, **opts): |
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140 """Wraps pull command to allow modifying narrow spec.""" |
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141 wrappedextraprepare = util.nullcontextmanager() |
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142 if repository.NARROW_REQUIREMENT in repo.requirements: |
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143 |
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144 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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145 orig(pullop, kwargs) |
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146 if opts.get(r'depth'): |
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147 kwargs['depth'] = opts[r'depth'] |
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148 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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149 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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150 |
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151 with wrappedextraprepare: |
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152 return orig(ui, repo, *args, **opts) |
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153 |
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154 def archivenarrowcmd(orig, ui, repo, *args, **opts): |
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155 """Wraps archive command to narrow the default includes.""" |
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156 if repository.NARROW_REQUIREMENT in repo.requirements: |
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157 repo_includes, repo_excludes = repo.narrowpats |
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158 includes = set(opts.get(r'include', [])) |
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159 excludes = set(opts.get(r'exclude', [])) |
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160 includes, excludes, unused_invalid = narrowspec.restrictpatterns( |
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161 includes, excludes, repo_includes, repo_excludes) |
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162 if includes: |
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163 opts[r'include'] = includes |
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164 if excludes: |
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165 opts[r'exclude'] = excludes |
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166 return orig(ui, repo, *args, **opts) |
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167 |
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168 def pullbundle2extraprepare(orig, pullop, kwargs): |
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169 repo = pullop.repo |
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170 if repository.NARROW_REQUIREMENT not in repo.requirements: |
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171 return orig(pullop, kwargs) |
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172 |
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173 if narrowbundle2.NARROWCAP not in pullop.remotebundle2caps: |
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174 raise error.Abort(_("server doesn't support narrow clones")) |
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175 orig(pullop, kwargs) |
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176 kwargs['narrow'] = True |
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177 include, exclude = repo.narrowpats |
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178 kwargs['oldincludepats'] = include |
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179 kwargs['oldexcludepats'] = exclude |
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180 kwargs['includepats'] = include |
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181 kwargs['excludepats'] = exclude |
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182 kwargs['known'] = [node.hex(ctx.node()) for ctx in |
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183 repo.set('::%ln', pullop.common) |
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184 if ctx.node() != node.nullid] |
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185 if not kwargs['known']: |
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186 # Mercurial serialized an empty list as '' and deserializes it as |
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187 # [''], so delete it instead to avoid handling the empty string on the |
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188 # server. |
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189 del kwargs['known'] |
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190 |
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191 extensions.wrapfunction(exchange,'_pullbundle2extraprepare', |
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192 pullbundle2extraprepare) |
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193 |
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194 def _narrow(ui, repo, remote, commoninc, oldincludes, oldexcludes, |
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195 newincludes, newexcludes, force): |
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196 oldmatch = narrowspec.match(repo.root, oldincludes, oldexcludes) |
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197 newmatch = narrowspec.match(repo.root, newincludes, newexcludes) |
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198 |
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199 # This is essentially doing "hg outgoing" to find all local-only |
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200 # commits. We will then check that the local-only commits don't |
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201 # have any changes to files that will be untracked. |
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202 unfi = repo.unfiltered() |
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203 outgoing = discovery.findcommonoutgoing(unfi, remote, |
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204 commoninc=commoninc) |
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205 ui.status(_('looking for local changes to affected paths\n')) |
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206 localnodes = [] |
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207 for n in itertools.chain(outgoing.missing, outgoing.excluded): |
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208 if any(oldmatch(f) and not newmatch(f) for f in unfi[n].files()): |
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209 localnodes.append(n) |
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210 revstostrip = unfi.revs('descendants(%ln)', localnodes) |
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211 hiddenrevs = repoview.filterrevs(repo, 'visible') |
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212 visibletostrip = list(repo.changelog.node(r) |
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213 for r in (revstostrip - hiddenrevs)) |
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214 if visibletostrip: |
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215 ui.status(_('The following changeset(s) or their ancestors have ' |
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216 'local changes not on the remote:\n')) |
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217 maxnodes = 10 |
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218 if ui.verbose or len(visibletostrip) <= maxnodes: |
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219 for n in visibletostrip: |
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220 ui.status('%s\n' % node.short(n)) |
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221 else: |
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222 for n in visibletostrip[:maxnodes]: |
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223 ui.status('%s\n' % node.short(n)) |
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224 ui.status(_('...and %d more, use --verbose to list all\n') % |
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225 (len(visibletostrip) - maxnodes)) |
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226 if not force: |
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227 raise error.Abort(_('local changes found'), |
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228 hint=_('use --force-delete-local-changes to ' |
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229 'ignore')) |
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230 |
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231 with ui.uninterruptable(): |
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232 if revstostrip: |
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233 tostrip = [unfi.changelog.node(r) for r in revstostrip] |
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234 if repo['.'].node() in tostrip: |
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235 # stripping working copy, so move to a different commit first |
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236 urev = max(repo.revs('(::%n) - %ln + null', |
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237 repo['.'].node(), visibletostrip)) |
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238 hg.clean(repo, urev) |
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239 repair.strip(ui, unfi, tostrip, topic='narrow') |
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240 |
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241 todelete = [] |
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242 for f, f2, size in repo.store.datafiles(): |
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243 if f.startswith('data/'): |
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244 file = f[5:-2] |
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245 if not newmatch(file): |
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246 todelete.append(f) |
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247 elif f.startswith('meta/'): |
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248 dir = f[5:-13] |
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249 dirs = ['.'] + sorted(util.dirs({dir})) + [dir] |
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250 include = True |
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251 for d in dirs: |
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252 visit = newmatch.visitdir(d) |
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253 if not visit: |
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254 include = False |
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255 break |
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256 if visit == 'all': |
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257 break |
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258 if not include: |
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259 todelete.append(f) |
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260 |
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261 repo.destroying() |
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262 |
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263 with repo.transaction("narrowing"): |
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264 for f in todelete: |
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265 ui.status(_('deleting %s\n') % f) |
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266 util.unlinkpath(repo.svfs.join(f)) |
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267 repo.store.markremoved(f) |
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268 |
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269 for f in repo.dirstate: |
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270 if not newmatch(f): |
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271 repo.dirstate.drop(f) |
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272 repo.wvfs.unlinkpath(f) |
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273 repo.setnarrowpats(newincludes, newexcludes) |
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274 |
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275 repo.destroyed() |
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276 |
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277 def _widen(ui, repo, remote, commoninc, newincludes, newexcludes): |
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278 newmatch = narrowspec.match(repo.root, newincludes, newexcludes) |
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279 |
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280 # TODO(martinvonz): Get expansion working with widening/narrowing. |
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281 if narrowspec.needsexpansion(newincludes): |
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282 raise error.Abort('Expansion not yet supported on pull') |
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283 |
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284 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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285 orig(pullop, kwargs) |
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286 # The old{in,ex}cludepats have already been set by orig() |
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287 kwargs['includepats'] = newincludes |
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288 kwargs['excludepats'] = newexcludes |
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289 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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290 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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291 |
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292 # define a function that narrowbundle2 can call after creating the |
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293 # backup bundle, but before applying the bundle from the server |
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294 def setnewnarrowpats(): |
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295 repo.setnarrowpats(newincludes, newexcludes) |
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296 repo.setnewnarrowpats = setnewnarrowpats |
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297 |
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298 with ui.uninterruptable(): |
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299 ds = repo.dirstate |
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300 p1, p2 = ds.p1(), ds.p2() |
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301 with ds.parentchange(): |
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302 ds.setparents(node.nullid, node.nullid) |
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303 common = commoninc[0] |
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304 with wrappedextraprepare: |
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305 exchange.pull(repo, remote, heads=common) |
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306 with ds.parentchange(): |
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307 ds.setparents(p1, p2) |
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308 |
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309 actions = {k: [] for k in 'a am f g cd dc r dm dg m e k p pr'.split()} |
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310 addgaction = actions['g'].append |
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311 |
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312 mf = repo['.'].manifest().matches(newmatch) |
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313 for f, fn in mf.iteritems(): |
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314 if f not in repo.dirstate: |
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315 addgaction((f, (mf.flags(f), False), |
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316 "add from widened narrow clone")) |
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317 |
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318 merge.applyupdates(repo, actions, wctx=repo[None], |
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319 mctx=repo['.'], overwrite=False) |
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320 merge.recordupdates(repo, actions, branchmerge=False) |
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321 |
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322 # TODO(rdamazio): Make new matcher format and update description |
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323 @command('tracked', |
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324 [('', 'addinclude', [], _('new paths to include')), |
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325 ('', 'removeinclude', [], _('old paths to no longer include')), |
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326 ('', 'addexclude', [], _('new paths to exclude')), |
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327 ('', 'removeexclude', [], _('old paths to no longer exclude')), |
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328 ('', 'clear', False, _('whether to replace the existing narrowspec')), |
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329 ('', 'force-delete-local-changes', False, |
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330 _('forces deletion of local changes when narrowing')), |
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331 ] + commands.remoteopts, |
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332 _('[OPTIONS]... [REMOTE]'), |
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333 inferrepo=True) |
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334 def trackedcmd(ui, repo, remotepath=None, *pats, **opts): |
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335 """show or change the current narrowspec |
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336 |
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337 With no argument, shows the current narrowspec entries, one per line. Each |
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338 line will be prefixed with 'I' or 'X' for included or excluded patterns, |
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339 respectively. |
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340 |
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341 The narrowspec is comprised of expressions to match remote files and/or |
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342 directories that should be pulled into your client. |
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343 The narrowspec has *include* and *exclude* expressions, with excludes always |
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344 trumping includes: that is, if a file matches an exclude expression, it will |
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345 be excluded even if it also matches an include expression. |
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346 Excluding files that were never included has no effect. |
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347 |
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348 Each included or excluded entry is in the format described by |
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349 'hg help patterns'. |
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350 |
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351 The options allow you to add or remove included and excluded expressions. |
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352 |
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353 If --clear is specified, then all previous includes and excludes are DROPPED |
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354 and replaced by the new ones specified to --addinclude and --addexclude. |
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355 If --clear is specified without any further options, the narrowspec will be |
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356 empty and will not match any files. |
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357 """ |
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358 opts = pycompat.byteskwargs(opts) |
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359 if repository.NARROW_REQUIREMENT not in repo.requirements: |
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360 ui.warn(_('The narrow command is only supported on respositories cloned' |
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361 ' with --narrow.\n')) |
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362 return 1 |
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363 |
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364 # Before supporting, decide whether it "hg tracked --clear" should mean |
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365 # tracking no paths or all paths. |
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366 if opts['clear']: |
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367 ui.warn(_('The --clear option is not yet supported.\n')) |
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368 return 1 |
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369 |
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370 if narrowspec.needsexpansion(opts['addinclude'] + opts['addexclude']): |
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371 raise error.Abort('Expansion not yet supported on widen/narrow') |
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372 |
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373 addedincludes = narrowspec.parsepatterns(opts['addinclude']) |
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374 removedincludes = narrowspec.parsepatterns(opts['removeinclude']) |
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375 addedexcludes = narrowspec.parsepatterns(opts['addexclude']) |
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376 removedexcludes = narrowspec.parsepatterns(opts['removeexclude']) |
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377 widening = addedincludes or removedexcludes |
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378 narrowing = removedincludes or addedexcludes |
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379 only_show = not widening and not narrowing |
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380 |
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381 # Only print the current narrowspec. |
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382 if only_show: |
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383 include, exclude = repo.narrowpats |
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384 |
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385 ui.pager('tracked') |
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386 fm = ui.formatter('narrow', opts) |
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387 for i in sorted(include): |
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388 fm.startitem() |
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389 fm.write('status', '%s ', 'I', label='narrow.included') |
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390 fm.write('pat', '%s\n', i, label='narrow.included') |
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391 for i in sorted(exclude): |
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392 fm.startitem() |
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393 fm.write('status', '%s ', 'X', label='narrow.excluded') |
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394 fm.write('pat', '%s\n', i, label='narrow.excluded') |
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395 fm.end() |
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396 return 0 |
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397 |
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398 with repo.wlock(), repo.lock(): |
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399 cmdutil.bailifchanged(repo) |
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400 |
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401 # Find the revisions we have in common with the remote. These will |
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402 # be used for finding local-only changes for narrowing. They will |
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403 # also define the set of revisions to update for widening. |
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404 remotepath = ui.expandpath(remotepath or 'default') |
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405 url, branches = hg.parseurl(remotepath) |
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406 ui.status(_('comparing with %s\n') % util.hidepassword(url)) |
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407 remote = hg.peer(repo, opts, url) |
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408 commoninc = discovery.findcommonincoming(repo, remote) |
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409 |
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410 oldincludes, oldexcludes = repo.narrowpats |
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411 if narrowing: |
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412 newincludes = oldincludes - removedincludes |
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413 newexcludes = oldexcludes | addedexcludes |
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414 _narrow(ui, repo, remote, commoninc, oldincludes, oldexcludes, |
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415 newincludes, newexcludes, |
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416 opts['force_delete_local_changes']) |
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417 # _narrow() updated the narrowspec and _widen() below needs to |
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418 # use the updated values as its base (otherwise removed includes |
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419 # and addedexcludes will be lost in the resulting narrowspec) |
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420 oldincludes = newincludes |
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421 oldexcludes = newexcludes |
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422 |
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423 if widening: |
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424 newincludes = oldincludes | addedincludes |
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425 newexcludes = oldexcludes - removedexcludes |
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426 _widen(ui, repo, remote, commoninc, newincludes, newexcludes) |
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427 |
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428 return 0 |