Mercurial > hg
annotate hgext/narrow/narrowcommands.py @ 42415:c767e655ffda
narrow: use narrow_widen wireproto command to widen in case of ellipses
Few releases ago, we introduce narrow_widen wireproto command to be used to widen
narrow repositories. Before this patch, that was used in non-ellipses cases
only. In ellipses cases, we still do exchange.pull() which can pull more data
than required.
After this patch, the client will first check whether server supports doing
ellipses widening using wireproto command or not by checking server's wireproto
capability. If the server is upto date and support latest ellipses capability,
we call the wireproto command. Otherwise we fallback to exchange.pull() like
before.
The compat code make sure that things works even if one of the client or server
is old. The initial version of this patch does not had this compat code. It's
added to help Google release things smoothly internally. I plan to drop the
compat code before the upcoming major release.
Due to change to wireproto command, the code looks a bit dirty, next patches
will clean that up.
Differential Revision: https://phab.mercurial-scm.org/D6436
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Wed, 22 May 2019 02:59:48 +0530 |
parents | 7d4ee14ff92d |
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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 bundle2, |
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15 cmdutil, |
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16 commands, |
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17 discovery, |
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18 encoding, |
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19 error, |
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20 exchange, |
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21 extensions, |
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22 hg, |
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23 narrowspec, |
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24 node, |
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25 pycompat, |
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26 registrar, |
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27 repair, |
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28 repository, |
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29 repoview, |
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30 sparse, |
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31 util, |
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32 wireprototypes, |
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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 entry[1].append(('', 'narrowspec', '', |
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47 _("read narrowspecs from file"))) |
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48 # TODO(durin42): unify sparse/narrow --include/--exclude logic a bit |
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49 if 'sparse' not in extensions.enabled(): |
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50 entry[1].append(('', 'include', [], |
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51 _("specifically fetch this file/directory"))) |
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52 entry[1].append( |
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53 ('', 'exclude', [], |
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54 _("do not fetch this file/directory, even if included"))) |
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55 |
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56 entry = extensions.wrapcommand(commands.table, 'pull', pullnarrowcmd) |
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57 entry[1].append(('', 'depth', '', |
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58 _("limit the history fetched by distance from heads"))) |
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59 |
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60 extensions.wrapcommand(commands.table, 'archive', archivenarrowcmd) |
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61 |
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62 def clonenarrowcmd(orig, ui, repo, *args, **opts): |
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63 """Wraps clone command, so 'hg clone' first wraps localrepo.clone().""" |
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64 opts = pycompat.byteskwargs(opts) |
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65 wrappedextraprepare = util.nullcontextmanager() |
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66 narrowspecfile = opts['narrowspec'] |
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67 |
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68 if narrowspecfile: |
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69 filepath = os.path.join(encoding.getcwd(), narrowspecfile) |
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70 ui.status(_("reading narrowspec from '%s'\n") % filepath) |
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71 try: |
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72 fdata = util.readfile(filepath) |
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73 except IOError as inst: |
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74 raise error.Abort(_("cannot read narrowspecs from '%s': %s") % |
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75 (filepath, encoding.strtolocal(inst.strerror))) |
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76 |
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77 includes, excludes, profiles = sparse.parseconfig(ui, fdata, 'narrow') |
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78 if profiles: |
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79 raise error.Abort(_("cannot specify other files using '%include' in" |
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80 " narrowspec")) |
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81 |
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82 narrowspec.validatepatterns(includes) |
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83 narrowspec.validatepatterns(excludes) |
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84 |
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85 # narrowspec is passed so we should assume that user wants narrow clone |
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86 opts['narrow'] = True |
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87 opts['include'].extend(includes) |
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88 opts['exclude'].extend(excludes) |
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89 |
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90 if opts['narrow']: |
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91 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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92 orig(pullop, kwargs) |
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93 |
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94 if opts.get('depth'): |
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95 kwargs['depth'] = opts['depth'] |
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96 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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97 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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98 |
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99 with wrappedextraprepare: |
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100 return orig(ui, repo, *args, **pycompat.strkwargs(opts)) |
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101 |
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102 def pullnarrowcmd(orig, ui, repo, *args, **opts): |
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103 """Wraps pull command to allow modifying narrow spec.""" |
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104 wrappedextraprepare = util.nullcontextmanager() |
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105 if repository.NARROW_REQUIREMENT in repo.requirements: |
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106 |
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107 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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108 orig(pullop, kwargs) |
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109 if opts.get(r'depth'): |
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110 kwargs['depth'] = opts[r'depth'] |
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111 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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112 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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113 |
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114 with wrappedextraprepare: |
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115 return orig(ui, repo, *args, **opts) |
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116 |
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117 def archivenarrowcmd(orig, ui, repo, *args, **opts): |
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118 """Wraps archive command to narrow the default includes.""" |
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119 if repository.NARROW_REQUIREMENT in repo.requirements: |
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120 repo_includes, repo_excludes = repo.narrowpats |
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121 includes = set(opts.get(r'include', [])) |
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122 excludes = set(opts.get(r'exclude', [])) |
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123 includes, excludes, unused_invalid = narrowspec.restrictpatterns( |
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124 includes, excludes, repo_includes, repo_excludes) |
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125 if includes: |
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126 opts[r'include'] = includes |
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127 if excludes: |
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128 opts[r'exclude'] = excludes |
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129 return orig(ui, repo, *args, **opts) |
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130 |
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131 def pullbundle2extraprepare(orig, pullop, kwargs): |
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132 repo = pullop.repo |
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133 if repository.NARROW_REQUIREMENT not in repo.requirements: |
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134 return orig(pullop, kwargs) |
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135 |
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136 if wireprototypes.NARROWCAP not in pullop.remote.capabilities(): |
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137 raise error.Abort(_("server does not support narrow clones")) |
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138 orig(pullop, kwargs) |
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139 kwargs['narrow'] = True |
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140 include, exclude = repo.narrowpats |
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141 kwargs['oldincludepats'] = include |
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142 kwargs['oldexcludepats'] = exclude |
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143 if include: |
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144 kwargs['includepats'] = include |
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145 if exclude: |
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146 kwargs['excludepats'] = exclude |
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147 # calculate known nodes only in ellipses cases because in non-ellipses cases |
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148 # we have all the nodes |
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149 if wireprototypes.ELLIPSESCAP1 in pullop.remote.capabilities(): |
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150 kwargs['known'] = [node.hex(ctx.node()) for ctx in |
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151 repo.set('::%ln', pullop.common) |
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152 if ctx.node() != node.nullid] |
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153 if not kwargs['known']: |
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154 # Mercurial serializes an empty list as '' and deserializes it as |
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155 # [''], so delete it instead to avoid handling the empty string on |
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156 # the server. |
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157 del kwargs['known'] |
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158 |
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159 extensions.wrapfunction(exchange,'_pullbundle2extraprepare', |
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160 pullbundle2extraprepare) |
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161 |
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162 def _narrow(ui, repo, remote, commoninc, oldincludes, oldexcludes, |
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163 newincludes, newexcludes, force): |
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164 oldmatch = narrowspec.match(repo.root, oldincludes, oldexcludes) |
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165 newmatch = narrowspec.match(repo.root, newincludes, newexcludes) |
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166 |
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167 # This is essentially doing "hg outgoing" to find all local-only |
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168 # commits. We will then check that the local-only commits don't |
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169 # have any changes to files that will be untracked. |
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170 unfi = repo.unfiltered() |
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171 outgoing = discovery.findcommonoutgoing(unfi, remote, |
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172 commoninc=commoninc) |
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173 ui.status(_('looking for local changes to affected paths\n')) |
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174 localnodes = [] |
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175 for n in itertools.chain(outgoing.missing, outgoing.excluded): |
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176 if any(oldmatch(f) and not newmatch(f) for f in unfi[n].files()): |
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177 localnodes.append(n) |
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178 revstostrip = unfi.revs('descendants(%ln)', localnodes) |
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179 hiddenrevs = repoview.filterrevs(repo, 'visible') |
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180 visibletostrip = list(repo.changelog.node(r) |
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181 for r in (revstostrip - hiddenrevs)) |
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182 if visibletostrip: |
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183 ui.status(_('The following changeset(s) or their ancestors have ' |
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184 'local changes not on the remote:\n')) |
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185 maxnodes = 10 |
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186 if ui.verbose or len(visibletostrip) <= maxnodes: |
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187 for n in visibletostrip: |
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188 ui.status('%s\n' % node.short(n)) |
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189 else: |
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190 for n in visibletostrip[:maxnodes]: |
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191 ui.status('%s\n' % node.short(n)) |
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192 ui.status(_('...and %d more, use --verbose to list all\n') % |
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193 (len(visibletostrip) - maxnodes)) |
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194 if not force: |
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195 raise error.Abort(_('local changes found'), |
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196 hint=_('use --force-delete-local-changes to ' |
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197 'ignore')) |
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198 |
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199 with ui.uninterruptible(): |
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200 if revstostrip: |
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201 tostrip = [unfi.changelog.node(r) for r in revstostrip] |
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202 if repo['.'].node() in tostrip: |
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203 # stripping working copy, so move to a different commit first |
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204 urev = max(repo.revs('(::%n) - %ln + null', |
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205 repo['.'].node(), visibletostrip)) |
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206 hg.clean(repo, urev) |
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207 overrides = {('devel', 'strip-obsmarkers'): False} |
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208 with ui.configoverride(overrides, 'narrow'): |
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209 repair.strip(ui, unfi, tostrip, topic='narrow') |
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210 |
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211 todelete = [] |
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212 for f, f2, size in repo.store.datafiles(): |
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213 if f.startswith('data/'): |
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214 file = f[5:-2] |
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215 if not newmatch(file): |
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216 todelete.append(f) |
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217 elif f.startswith('meta/'): |
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218 dir = f[5:-13] |
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219 dirs = sorted(util.dirs({dir})) + [dir] |
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220 include = True |
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221 for d in dirs: |
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222 visit = newmatch.visitdir(d) |
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223 if not visit: |
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224 include = False |
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225 break |
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226 if visit == 'all': |
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227 break |
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228 if not include: |
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229 todelete.append(f) |
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230 |
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231 repo.destroying() |
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232 |
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233 with repo.transaction('narrowing'): |
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234 # Update narrowspec before removing revlogs, so repo won't be |
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235 # corrupt in case of crash |
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236 repo.setnarrowpats(newincludes, newexcludes) |
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237 |
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238 for f in todelete: |
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239 ui.status(_('deleting %s\n') % f) |
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240 util.unlinkpath(repo.svfs.join(f)) |
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241 repo.store.markremoved(f) |
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242 |
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243 narrowspec.updateworkingcopy(repo, assumeclean=True) |
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244 narrowspec.copytoworkingcopy(repo) |
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245 |
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246 repo.destroyed() |
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247 |
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248 def _widen(ui, repo, remote, commoninc, oldincludes, oldexcludes, |
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249 newincludes, newexcludes): |
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250 # for now we assume that if a server has ellipses enabled, we will be |
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251 # exchanging ellipses nodes. In future we should add ellipses as a client |
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252 # side requirement (maybe) to distinguish a client is shallow or not and |
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253 # then send that information to server whether we want ellipses or not. |
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254 # Theoretically a non-ellipses repo should be able to use narrow |
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255 # functionality from an ellipses enabled server |
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256 remotecap = remote.capabilities() |
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257 ellipsesremote = any(cap in remotecap |
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258 for cap in wireprototypes.SUPPORTED_ELLIPSESCAP) |
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259 |
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260 # check whether we are talking to a server which supports old version of |
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261 # ellipses capabilities |
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262 isoldellipses = (ellipsesremote and wireprototypes.ELLIPSESCAP1 in |
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263 remotecap and wireprototypes.ELLIPSESCAP not in remotecap) |
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264 |
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265 def pullbundle2extraprepare_widen(orig, pullop, kwargs): |
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266 orig(pullop, kwargs) |
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267 # The old{in,ex}cludepats have already been set by orig() |
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268 kwargs['includepats'] = newincludes |
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269 kwargs['excludepats'] = newexcludes |
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270 wrappedextraprepare = extensions.wrappedfunction(exchange, |
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271 '_pullbundle2extraprepare', pullbundle2extraprepare_widen) |
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272 |
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273 # define a function that narrowbundle2 can call after creating the |
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274 # backup bundle, but before applying the bundle from the server |
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275 def setnewnarrowpats(): |
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276 repo.setnarrowpats(newincludes, newexcludes) |
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277 repo.setnewnarrowpats = setnewnarrowpats |
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278 # silence the devel-warning of applying an empty changegroup |
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279 overrides = {('devel', 'all-warnings'): False} |
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280 |
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281 with ui.uninterruptible(): |
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282 common = commoninc[0] |
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283 if ellipsesremote: |
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284 ds = repo.dirstate |
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285 p1, p2 = ds.p1(), ds.p2() |
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286 with ds.parentchange(): |
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287 ds.setparents(node.nullid, node.nullid) |
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288 with wrappedextraprepare: |
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289 if isoldellipses: |
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290 exchange.pull(repo, remote, heads=common) |
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291 else: |
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292 known = [node.hex(ctx.node()) for ctx in |
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293 repo.set('::%ln', common) |
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294 if ctx.node() != node.nullid] |
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295 |
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296 with remote.commandexecutor() as e: |
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297 bundle = e.callcommand('narrow_widen', { |
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298 'oldincludes': oldincludes, |
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299 'oldexcludes': oldexcludes, |
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300 'newincludes': newincludes, |
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301 'newexcludes': newexcludes, |
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302 'cgversion': '03', |
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303 'commonheads': common, |
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304 'known': known, |
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305 'ellipses': True, |
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306 }).result() |
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307 trmanager = exchange.transactionmanager(repo, 'widen', |
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308 remote.url()) |
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309 with trmanager: |
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310 op = bundle2.bundleoperation(repo, |
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311 trmanager.transaction, source='widen') |
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312 bundle2.processbundle(repo, bundle, op=op) |
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313 |
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314 with ds.parentchange(): |
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315 ds.setparents(p1, p2) |
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316 else: |
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317 with remote.commandexecutor() as e: |
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318 bundle = e.callcommand('narrow_widen', { |
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319 'oldincludes': oldincludes, |
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320 'oldexcludes': oldexcludes, |
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321 'newincludes': newincludes, |
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322 'newexcludes': newexcludes, |
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323 'cgversion': '03', |
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324 'commonheads': common, |
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325 'known': [], |
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326 'ellipses': False, |
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327 }).result() |
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328 |
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329 with repo.transaction('widening') as tr: |
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330 with repo.ui.configoverride(overrides, 'widen'): |
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331 tgetter = lambda: tr |
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332 bundle2.processbundle(repo, bundle, |
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333 transactiongetter=tgetter) |
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334 |
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335 with repo.transaction('widening'): |
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336 repo.setnewnarrowpats() |
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337 narrowspec.updateworkingcopy(repo) |
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338 narrowspec.copytoworkingcopy(repo) |
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339 |
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340 # TODO(rdamazio): Make new matcher format and update description |
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341 @command('tracked', |
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342 [('', 'addinclude', [], _('new paths to include')), |
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343 ('', 'removeinclude', [], _('old paths to no longer include')), |
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344 ('', 'addexclude', [], _('new paths to exclude')), |
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345 ('', 'import-rules', '', _('import narrowspecs from a file')), |
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346 ('', 'removeexclude', [], _('old paths to no longer exclude')), |
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347 ('', 'clear', False, _('whether to replace the existing narrowspec')), |
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348 ('', 'force-delete-local-changes', False, |
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349 _('forces deletion of local changes when narrowing')), |
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350 ('', 'update-working-copy', False, |
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351 _('update working copy when the store has changed')), |
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352 ] + commands.remoteopts, |
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353 _('[OPTIONS]... [REMOTE]'), |
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354 inferrepo=True) |
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355 def trackedcmd(ui, repo, remotepath=None, *pats, **opts): |
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356 """show or change the current narrowspec |
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357 |
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358 With no argument, shows the current narrowspec entries, one per line. Each |
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359 line will be prefixed with 'I' or 'X' for included or excluded patterns, |
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360 respectively. |
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361 |
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362 The narrowspec is comprised of expressions to match remote files and/or |
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363 directories that should be pulled into your client. |
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364 The narrowspec has *include* and *exclude* expressions, with excludes always |
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365 trumping includes: that is, if a file matches an exclude expression, it will |
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366 be excluded even if it also matches an include expression. |
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367 Excluding files that were never included has no effect. |
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368 |
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369 Each included or excluded entry is in the format described by |
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370 'hg help patterns'. |
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371 |
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372 The options allow you to add or remove included and excluded expressions. |
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373 |
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374 If --clear is specified, then all previous includes and excludes are DROPPED |
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375 and replaced by the new ones specified to --addinclude and --addexclude. |
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376 If --clear is specified without any further options, the narrowspec will be |
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377 empty and will not match any files. |
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378 |
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379 --import-rules accepts a path to a file containing rules, allowing you to |
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380 add --addinclude, --addexclude rules in bulk. Like the other include and |
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381 exclude switches, the changes are applied immediately. |
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382 """ |
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383 opts = pycompat.byteskwargs(opts) |
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384 if repository.NARROW_REQUIREMENT not in repo.requirements: |
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385 raise error.Abort(_('the tracked command is only supported on ' |
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386 'respositories cloned with --narrow')) |
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387 |
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388 # Before supporting, decide whether it "hg tracked --clear" should mean |
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389 # tracking no paths or all paths. |
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390 if opts['clear']: |
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391 raise error.Abort(_('the --clear option is not yet supported')) |
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392 |
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393 # import rules from a file |
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394 newrules = opts.get('import_rules') |
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395 if newrules: |
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396 try: |
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397 filepath = os.path.join(encoding.getcwd(), newrules) |
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398 fdata = util.readfile(filepath) |
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399 except IOError as inst: |
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400 raise error.Abort(_("cannot read narrowspecs from '%s': %s") % |
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401 (filepath, encoding.strtolocal(inst.strerror))) |
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402 includepats, excludepats, profiles = sparse.parseconfig(ui, fdata, |
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403 'narrow') |
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404 if profiles: |
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405 raise error.Abort(_("including other spec files using '%include' " |
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406 "is not supported in narrowspec")) |
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407 opts['addinclude'].extend(includepats) |
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408 opts['addexclude'].extend(excludepats) |
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409 |
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410 addedincludes = narrowspec.parsepatterns(opts['addinclude']) |
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411 removedincludes = narrowspec.parsepatterns(opts['removeinclude']) |
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412 addedexcludes = narrowspec.parsepatterns(opts['addexclude']) |
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413 removedexcludes = narrowspec.parsepatterns(opts['removeexclude']) |
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414 |
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415 update_working_copy = opts['update_working_copy'] |
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416 only_show = not (addedincludes or removedincludes or addedexcludes or |
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417 removedexcludes or newrules or update_working_copy) |
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418 |
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419 oldincludes, oldexcludes = repo.narrowpats |
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420 |
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421 # filter the user passed additions and deletions into actual additions and |
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422 # deletions of excludes and includes |
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423 addedincludes -= oldincludes |
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424 removedincludes &= oldincludes |
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425 addedexcludes -= oldexcludes |
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426 removedexcludes &= oldexcludes |
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427 |
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428 widening = addedincludes or removedexcludes |
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429 narrowing = removedincludes or addedexcludes |
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430 |
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431 # Only print the current narrowspec. |
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432 if only_show: |
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433 ui.pager('tracked') |
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434 fm = ui.formatter('narrow', opts) |
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435 for i in sorted(oldincludes): |
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436 fm.startitem() |
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437 fm.write('status', '%s ', 'I', label='narrow.included') |
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438 fm.write('pat', '%s\n', i, label='narrow.included') |
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439 for i in sorted(oldexcludes): |
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440 fm.startitem() |
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441 fm.write('status', '%s ', 'X', label='narrow.excluded') |
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442 fm.write('pat', '%s\n', i, label='narrow.excluded') |
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443 fm.end() |
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444 return 0 |
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445 |
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446 if update_working_copy: |
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447 with repo.wlock(), repo.lock(), repo.transaction('narrow-wc'): |
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448 narrowspec.updateworkingcopy(repo) |
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449 narrowspec.copytoworkingcopy(repo) |
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450 return 0 |
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451 |
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452 if not widening and not narrowing: |
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453 ui.status(_("nothing to widen or narrow\n")) |
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454 return 0 |
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455 |
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456 with repo.wlock(), repo.lock(): |
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457 cmdutil.bailifchanged(repo) |
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458 |
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459 # Find the revisions we have in common with the remote. These will |
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460 # be used for finding local-only changes for narrowing. They will |
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461 # also define the set of revisions to update for widening. |
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462 remotepath = ui.expandpath(remotepath or 'default') |
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463 url, branches = hg.parseurl(remotepath) |
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464 ui.status(_('comparing with %s\n') % util.hidepassword(url)) |
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465 remote = hg.peer(repo, opts, url) |
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466 |
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467 # check narrow support before doing anything if widening needs to be |
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468 # performed. In future we should also abort if client is ellipses and |
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469 # server does not support ellipses |
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470 if widening and wireprototypes.NARROWCAP not in remote.capabilities(): |
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471 raise error.Abort(_("server does not support narrow clones")) |
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472 |
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473 commoninc = discovery.findcommonincoming(repo, remote) |
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474 |
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475 if narrowing: |
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476 newincludes = oldincludes - removedincludes |
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477 newexcludes = oldexcludes | addedexcludes |
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478 _narrow(ui, repo, remote, commoninc, oldincludes, oldexcludes, |
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479 newincludes, newexcludes, |
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480 opts['force_delete_local_changes']) |
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481 # _narrow() updated the narrowspec and _widen() below needs to |
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482 # use the updated values as its base (otherwise removed includes |
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483 # and addedexcludes will be lost in the resulting narrowspec) |
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484 oldincludes = newincludes |
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485 oldexcludes = newexcludes |
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486 |
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487 if widening: |
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488 newincludes = oldincludes | addedincludes |
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489 newexcludes = oldexcludes - removedexcludes |
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490 _widen(ui, repo, remote, commoninc, oldincludes, oldexcludes, |
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491 newincludes, newexcludes) |
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492 |
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493 return 0 |