Mercurial > hg
annotate hgext/narrow/narrowcommands.py @ 36160:9fd8c2a3db5a
narrowspec: move module into core
Having support for parsing the narrow specification in core is
necessary for moving many other parts of narrow to core.
We do still want to harmonize the narrow spec with the sparse
spec. And the format needs to be documented. But this shouldn't
hold up the code moving to core.
Differential Revision: https://phab.mercurial-scm.org/D2201
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 12 Feb 2018 16:21:34 -0800 |
parents | 4a7ba3ac9163 |
children | ccf7ae119769 |
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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 |
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11 from mercurial.i18n import _ |
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12 from mercurial import ( |
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13 cmdutil, |
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14 commands, |
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15 discovery, |
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16 error, |
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17 exchange, |
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18 extensions, |
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19 hg, |
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20 merge, |
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21 narrowspec, |
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22 node, |
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23 pycompat, |
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24 registrar, |
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25 repair, |
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26 repoview, |
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27 util, |
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28 ) |
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29 |
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30 from . import ( |
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31 narrowbundle2, |
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32 narrowrepo, |
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33 ) |
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34 |
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35 table = {} |
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36 command = registrar.command(table) |
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37 |
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38 def setup(): |
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39 """Wraps user-facing mercurial commands with narrow-aware versions.""" |
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40 |
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41 entry = extensions.wrapcommand(commands.table, 'clone', clonenarrowcmd) |
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42 entry[1].append(('', 'narrow', None, |
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43 _("create a narrow clone of select files"))) |
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44 entry[1].append(('', 'depth', '', |
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45 _("limit the history fetched by distance from heads"))) |
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46 # TODO(durin42): unify sparse/narrow --include/--exclude logic a bit |
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47 if 'sparse' not in extensions.enabled(): |
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48 entry[1].append(('', 'include', [], |
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49 _("specifically fetch this file/directory"))) |
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50 entry[1].append( |
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51 ('', 'exclude', [], |
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52 _("do not fetch this file/directory, even if included"))) |
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53 |
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54 entry = extensions.wrapcommand(commands.table, 'pull', pullnarrowcmd) |
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55 entry[1].append(('', 'depth', '', |
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56 _("limit the history fetched by distance from heads"))) |
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57 |
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58 extensions.wrapcommand(commands.table, 'archive', archivenarrowcmd) |
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59 |
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60 def expandpull(pullop, includepats, excludepats): |
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61 if not narrowspec.needsexpansion(includepats): |
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62 return includepats, excludepats |
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63 |
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64 heads = pullop.heads or pullop.rheads |
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65 includepats, excludepats = pullop.remote.expandnarrow( |
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66 includepats, excludepats, heads) |
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67 pullop.repo.ui.debug('Expanded narrowspec to inc=%s, exc=%s\n' % ( |
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68 includepats, excludepats)) |
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69 return set(includepats), set(excludepats) |
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70 |
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71 def clonenarrowcmd(orig, ui, repo, *args, **opts): |
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72 """Wraps clone command, so 'hg clone' first wraps localrepo.clone().""" |
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73 opts = pycompat.byteskwargs(opts) |
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74 wrappedextraprepare = util.nullcontextmanager() |
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75 opts_narrow = opts['narrow'] |
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76 if opts_narrow: |
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77 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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78 # Create narrow spec patterns from clone flags |
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79 includepats = narrowspec.parsepatterns(opts['include']) |
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80 excludepats = narrowspec.parsepatterns(opts['exclude']) |
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81 |
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82 # If necessary, ask the server to expand the narrowspec. |
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83 includepats, excludepats = expandpull( |
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84 pullop, includepats, excludepats) |
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85 |
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86 if not includepats and excludepats: |
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87 # If nothing was included, we assume the user meant to include |
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88 # everything, except what they asked to exclude. |
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89 includepats = {'path:.'} |
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90 |
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91 narrowspec.save(pullop.repo, includepats, excludepats) |
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92 |
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93 # This will populate 'includepats' etc with the values from the |
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94 # narrowspec we just saved. |
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95 orig(pullop, kwargs) |
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96 |
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97 if opts.get('depth'): |
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98 kwargs['depth'] = opts['depth'] |
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99 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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100 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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101 |
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102 def pullnarrow(orig, repo, *args, **kwargs): |
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103 narrowrepo.wraprepo(repo.unfiltered(), opts_narrow) |
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104 if isinstance(repo, repoview.repoview): |
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105 repo.__class__.__bases__ = (repo.__class__.__bases__[0], |
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106 repo.unfiltered().__class__) |
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107 if opts_narrow: |
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108 repo.requirements.add(narrowrepo.REQUIREMENT) |
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109 repo._writerequirements() |
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110 |
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111 return orig(repo, *args, **kwargs) |
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112 |
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113 wrappedpull = extensions.wrappedfunction(exchange, 'pull', pullnarrow) |
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114 |
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115 with wrappedextraprepare, wrappedpull: |
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116 return orig(ui, repo, *args, **pycompat.strkwargs(opts)) |
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117 |
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118 def pullnarrowcmd(orig, ui, repo, *args, **opts): |
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119 """Wraps pull command to allow modifying narrow spec.""" |
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120 wrappedextraprepare = util.nullcontextmanager() |
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121 if narrowrepo.REQUIREMENT in repo.requirements: |
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122 |
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123 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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124 orig(pullop, kwargs) |
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125 if opts.get('depth'): |
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126 kwargs['depth'] = opts['depth'] |
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127 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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128 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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129 |
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130 with wrappedextraprepare: |
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131 return orig(ui, repo, *args, **opts) |
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132 |
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133 def archivenarrowcmd(orig, ui, repo, *args, **opts): |
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134 """Wraps archive command to narrow the default includes.""" |
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135 if narrowrepo.REQUIREMENT in repo.requirements: |
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136 repo_includes, repo_excludes = repo.narrowpats |
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137 includes = set(opts.get('include', [])) |
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138 excludes = set(opts.get('exclude', [])) |
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139 includes, excludes, unused_invalid = narrowspec.restrictpatterns( |
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140 includes, excludes, repo_includes, repo_excludes) |
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141 if includes: |
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142 opts['include'] = includes |
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143 if excludes: |
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144 opts['exclude'] = excludes |
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145 return orig(ui, repo, *args, **opts) |
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146 |
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147 def pullbundle2extraprepare(orig, pullop, kwargs): |
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148 repo = pullop.repo |
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149 if narrowrepo.REQUIREMENT not in repo.requirements: |
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150 return orig(pullop, kwargs) |
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151 |
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152 if narrowbundle2.NARROWCAP not in pullop.remotebundle2caps: |
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153 raise error.Abort(_("server doesn't support narrow clones")) |
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154 orig(pullop, kwargs) |
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155 kwargs['narrow'] = True |
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156 include, exclude = repo.narrowpats |
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157 kwargs['oldincludepats'] = include |
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158 kwargs['oldexcludepats'] = exclude |
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159 kwargs['includepats'] = include |
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160 kwargs['excludepats'] = exclude |
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161 kwargs['known'] = [node.hex(ctx.node()) for ctx in |
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162 repo.set('::%ln', pullop.common) |
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163 if ctx.node() != node.nullid] |
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164 if not kwargs['known']: |
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165 # Mercurial serialized an empty list as '' and deserializes it as |
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166 # [''], so delete it instead to avoid handling the empty string on the |
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167 # server. |
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168 del kwargs['known'] |
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169 |
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170 extensions.wrapfunction(exchange,'_pullbundle2extraprepare', |
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171 pullbundle2extraprepare) |
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172 |
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173 def _narrow(ui, repo, remote, commoninc, oldincludes, oldexcludes, |
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174 newincludes, newexcludes, force): |
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175 oldmatch = narrowspec.match(repo.root, oldincludes, oldexcludes) |
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176 newmatch = narrowspec.match(repo.root, newincludes, newexcludes) |
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177 |
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178 # This is essentially doing "hg outgoing" to find all local-only |
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179 # commits. We will then check that the local-only commits don't |
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180 # have any changes to files that will be untracked. |
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181 unfi = repo.unfiltered() |
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182 outgoing = discovery.findcommonoutgoing(unfi, remote, |
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183 commoninc=commoninc) |
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184 ui.status(_('looking for local changes to affected paths\n')) |
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185 localnodes = [] |
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186 for n in itertools.chain(outgoing.missing, outgoing.excluded): |
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187 if any(oldmatch(f) and not newmatch(f) for f in unfi[n].files()): |
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188 localnodes.append(n) |
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189 revstostrip = unfi.revs('descendants(%ln)', localnodes) |
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190 hiddenrevs = repoview.filterrevs(repo, 'visible') |
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191 visibletostrip = list(repo.changelog.node(r) |
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192 for r in (revstostrip - hiddenrevs)) |
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193 if visibletostrip: |
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194 ui.status(_('The following changeset(s) or their ancestors have ' |
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195 'local changes not on the remote:\n')) |
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196 maxnodes = 10 |
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197 if ui.verbose or len(visibletostrip) <= maxnodes: |
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198 for n in visibletostrip: |
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199 ui.status('%s\n' % node.short(n)) |
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200 else: |
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201 for n in visibletostrip[:maxnodes]: |
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202 ui.status('%s\n' % node.short(n)) |
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203 ui.status(_('...and %d more, use --verbose to list all\n') % |
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204 (len(visibletostrip) - maxnodes)) |
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205 if not force: |
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206 raise error.Abort(_('local changes found'), |
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207 hint=_('use --force-delete-local-changes to ' |
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208 'ignore')) |
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209 |
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210 if revstostrip: |
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211 tostrip = [unfi.changelog.node(r) for r in revstostrip] |
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212 if repo['.'].node() in tostrip: |
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213 # stripping working copy, so move to a different commit first |
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214 urev = max(repo.revs('(::%n) - %ln + null', |
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215 repo['.'].node(), visibletostrip)) |
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216 hg.clean(repo, urev) |
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217 repair.strip(ui, unfi, tostrip, topic='narrow') |
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218 |
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219 todelete = [] |
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220 for f, f2, size in repo.store.datafiles(): |
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221 if f.startswith('data/'): |
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222 file = f[5:-2] |
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223 if not newmatch(file): |
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224 todelete.append(f) |
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225 elif f.startswith('meta/'): |
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226 dir = f[5:-13] |
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227 dirs = ['.'] + sorted(util.dirs({dir})) + [dir] |
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228 include = True |
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229 for d in dirs: |
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230 visit = newmatch.visitdir(d) |
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231 if not visit: |
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232 include = False |
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233 break |
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234 if visit == 'all': |
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235 break |
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236 if not include: |
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237 todelete.append(f) |
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238 |
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239 repo.destroying() |
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240 |
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241 with repo.transaction("narrowing"): |
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242 for f in todelete: |
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243 ui.status(_('deleting %s\n') % f) |
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244 util.unlinkpath(repo.svfs.join(f)) |
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245 repo.store.markremoved(f) |
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246 |
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247 for f in repo.dirstate: |
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248 if not newmatch(f): |
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249 repo.dirstate.drop(f) |
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250 repo.wvfs.unlinkpath(f) |
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251 repo.setnarrowpats(newincludes, newexcludes) |
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252 |
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253 repo.destroyed() |
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254 |
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255 def _widen(ui, repo, remote, commoninc, newincludes, newexcludes): |
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256 newmatch = narrowspec.match(repo.root, newincludes, newexcludes) |
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257 |
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258 # TODO(martinvonz): Get expansion working with widening/narrowing. |
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259 if narrowspec.needsexpansion(newincludes): |
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260 raise error.Abort('Expansion not yet supported on pull') |
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261 |
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262 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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263 orig(pullop, kwargs) |
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264 # The old{in,ex}cludepats have already been set by orig() |
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265 kwargs['includepats'] = newincludes |
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266 kwargs['excludepats'] = newexcludes |
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267 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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268 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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269 |
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270 # define a function that narrowbundle2 can call after creating the |
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271 # backup bundle, but before applying the bundle from the server |
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272 def setnewnarrowpats(): |
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273 repo.setnarrowpats(newincludes, newexcludes) |
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274 repo.setnewnarrowpats = setnewnarrowpats |
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275 |
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276 ds = repo.dirstate |
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277 p1, p2 = ds.p1(), ds.p2() |
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278 with ds.parentchange(): |
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279 ds.setparents(node.nullid, node.nullid) |
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280 common = commoninc[0] |
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281 with wrappedextraprepare: |
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282 exchange.pull(repo, remote, heads=common) |
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283 with ds.parentchange(): |
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284 ds.setparents(p1, p2) |
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285 |
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286 actions = {k: [] for k in 'a am f g cd dc r dm dg m e k p pr'.split()} |
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287 addgaction = actions['g'].append |
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288 |
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289 mf = repo['.'].manifest().matches(newmatch) |
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290 for f, fn in mf.iteritems(): |
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291 if f not in repo.dirstate: |
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292 addgaction((f, (mf.flags(f), False), |
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293 "add from widened narrow clone")) |
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294 |
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295 merge.applyupdates(repo, actions, wctx=repo[None], |
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296 mctx=repo['.'], overwrite=False) |
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297 merge.recordupdates(repo, actions, branchmerge=False) |
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298 |
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299 # TODO(rdamazio): Make new matcher format and update description |
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300 @command('tracked', |
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301 [('', 'addinclude', [], _('new paths to include')), |
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302 ('', 'removeinclude', [], _('old paths to no longer include')), |
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303 ('', 'addexclude', [], _('new paths to exclude')), |
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304 ('', 'removeexclude', [], _('old paths to no longer exclude')), |
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305 ('', 'clear', False, _('whether to replace the existing narrowspec')), |
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306 ('', 'force-delete-local-changes', False, |
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307 _('forces deletion of local changes when narrowing')), |
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308 ] + commands.remoteopts, |
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309 _('[OPTIONS]... [REMOTE]'), |
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310 inferrepo=True) |
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311 def trackedcmd(ui, repo, remotepath=None, *pats, **opts): |
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312 """show or change the current narrowspec |
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313 |
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314 With no argument, shows the current narrowspec entries, one per line. Each |
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315 line will be prefixed with 'I' or 'X' for included or excluded patterns, |
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316 respectively. |
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317 |
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318 The narrowspec is comprised of expressions to match remote files and/or |
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319 directories that should be pulled into your client. |
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320 The narrowspec has *include* and *exclude* expressions, with excludes always |
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321 trumping includes: that is, if a file matches an exclude expression, it will |
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322 be excluded even if it also matches an include expression. |
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323 Excluding files that were never included has no effect. |
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324 |
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325 Each included or excluded entry is in the format described by |
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326 'hg help patterns'. |
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327 |
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328 The options allow you to add or remove included and excluded expressions. |
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329 |
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330 If --clear is specified, then all previous includes and excludes are DROPPED |
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331 and replaced by the new ones specified to --addinclude and --addexclude. |
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332 If --clear is specified without any further options, the narrowspec will be |
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333 empty and will not match any files. |
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334 """ |
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335 if narrowrepo.REQUIREMENT not in repo.requirements: |
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336 ui.warn(_('The narrow command is only supported on respositories cloned' |
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337 ' with --narrow.\n')) |
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338 return 1 |
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339 |
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340 # Before supporting, decide whether it "hg tracked --clear" should mean |
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341 # tracking no paths or all paths. |
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342 if opts['clear']: |
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343 ui.warn(_('The --clear option is not yet supported.\n')) |
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344 return 1 |
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345 |
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346 if narrowspec.needsexpansion(opts['addinclude'] + opts['addexclude']): |
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347 raise error.Abort('Expansion not yet supported on widen/narrow') |
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348 |
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349 addedincludes = narrowspec.parsepatterns(opts['addinclude']) |
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350 removedincludes = narrowspec.parsepatterns(opts['removeinclude']) |
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351 addedexcludes = narrowspec.parsepatterns(opts['addexclude']) |
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352 removedexcludes = narrowspec.parsepatterns(opts['removeexclude']) |
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353 widening = addedincludes or removedexcludes |
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354 narrowing = removedincludes or addedexcludes |
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355 only_show = not widening and not narrowing |
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356 |
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357 # Only print the current narrowspec. |
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358 if only_show: |
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359 include, exclude = repo.narrowpats |
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360 |
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361 ui.pager('tracked') |
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362 fm = ui.formatter('narrow', opts) |
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363 for i in sorted(include): |
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364 fm.startitem() |
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365 fm.write('status', '%s ', 'I', label='narrow.included') |
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366 fm.write('pat', '%s\n', i, label='narrow.included') |
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367 for i in sorted(exclude): |
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368 fm.startitem() |
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369 fm.write('status', '%s ', 'X', label='narrow.excluded') |
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370 fm.write('pat', '%s\n', i, label='narrow.excluded') |
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371 fm.end() |
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372 return 0 |
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373 |
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374 with repo.wlock(), repo.lock(): |
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375 cmdutil.bailifchanged(repo) |
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376 |
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377 # Find the revisions we have in common with the remote. These will |
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378 # be used for finding local-only changes for narrowing. They will |
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379 # also define the set of revisions to update for widening. |
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380 remotepath = ui.expandpath(remotepath or 'default') |
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381 url, branches = hg.parseurl(remotepath) |
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382 ui.status(_('comparing with %s\n') % util.hidepassword(url)) |
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383 remote = hg.peer(repo, opts, url) |
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384 commoninc = discovery.findcommonincoming(repo, remote) |
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385 |
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386 oldincludes, oldexcludes = repo.narrowpats |
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387 if narrowing: |
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388 newincludes = oldincludes - removedincludes |
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389 newexcludes = oldexcludes | addedexcludes |
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390 _narrow(ui, repo, remote, commoninc, oldincludes, oldexcludes, |
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391 newincludes, newexcludes, |
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392 opts['force_delete_local_changes']) |
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393 # _narrow() updated the narrowspec and _widen() below needs to |
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394 # use the updated values as its base (otherwise removed includes |
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395 # and addedexcludes will be lost in the resulting narrowspec) |
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396 oldincludes = newincludes |
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397 oldexcludes = newexcludes |
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398 |
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399 if widening: |
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400 newincludes = oldincludes | addedincludes |
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401 newexcludes = oldexcludes - removedexcludes |
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402 _widen(ui, repo, remote, commoninc, newincludes, newexcludes) |
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403 |
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404 return 0 |