Mercurial > hg
annotate hgext/rebase.py @ 10492:0e64d814d7d0 stable
run commit and update hooks after command completion (issue1827)
Previously, the working dir state hadn't been written when these
hooks were invoked, so external commands couldn't see all changes.
author | Sune Foldager <cryo@cyanite.org> |
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date | Wed, 17 Feb 2010 15:43:21 +0100 |
parents | 6cebf27287de |
children | 6227c8d669d5 86dc21148bdb |
rev | line source |
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1 # rebase.py - rebasing feature for mercurial |
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2 # |
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3 # Copyright 2008 Stefano Tortarolo <stefano.tortarolo at gmail dot com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 '''command to move sets of revisions to a different ancestor |
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9 |
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10 This extension lets you rebase changesets in an existing Mercurial |
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11 repository. |
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12 |
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13 For more information: |
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14 http://mercurial.selenic.com/wiki/RebaseExtension |
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15 ''' |
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16 |
7636 | 17 from mercurial import util, repair, merge, cmdutil, commands, error |
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18 from mercurial import extensions, ancestor, copies, patch |
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19 from mercurial.commands import templateopts |
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20 from mercurial.node import nullrev |
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21 from mercurial.lock import release |
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22 from mercurial.i18n import _ |
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23 import os, errno |
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24 |
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25 nullmerge = -2 |
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26 |
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27 def rebase(ui, repo, **opts): |
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28 """move changeset (and descendants) to a different branch |
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29 |
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30 Rebase uses repeated merging to graft changesets from one part of |
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31 history onto another. This can be useful for linearizing local |
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32 changes relative to a master development tree. |
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33 |
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34 If a rebase is interrupted to manually resolve a merge, it can be |
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35 continued with --continue/-c or aborted with --abort/-a. |
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36 """ |
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37 originalwd = target = None |
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38 external = nullrev |
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39 state = {} |
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40 skipped = set() |
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41 targetancestors = set() |
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42 |
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43 lock = wlock = None |
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44 try: |
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45 lock = repo.lock() |
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46 wlock = repo.wlock() |
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47 |
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48 # Validate input and define rebasing points |
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49 destf = opts.get('dest', None) |
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50 srcf = opts.get('source', None) |
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51 basef = opts.get('base', None) |
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52 contf = opts.get('continue') |
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53 abortf = opts.get('abort') |
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54 collapsef = opts.get('collapse', False) |
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55 extrafn = opts.get('extrafn') |
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56 keepf = opts.get('keep', False) |
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57 keepbranchesf = opts.get('keepbranches', False) |
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58 detachf = opts.get('detach', False) |
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59 |
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60 if contf or abortf: |
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61 if contf and abortf: |
7636 | 62 raise error.ParseError('rebase', |
63 _('cannot use both abort and continue')) | |
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64 if collapsef: |
7636 | 65 raise error.ParseError( |
66 'rebase', _('cannot use collapse with continue or abort')) | |
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67 |
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68 if detachf: |
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69 raise error.ParseError( |
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70 'rebase', _('cannot use detach with continue or abort')) |
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71 |
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72 if srcf or basef or destf: |
7636 | 73 raise error.ParseError('rebase', |
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74 _('abort and continue do not allow specifying revisions')) |
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75 |
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76 (originalwd, target, state, collapsef, keepf, |
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77 keepbranchesf, external) = restorestatus(repo) |
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78 if abortf: |
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79 abort(repo, originalwd, target, state) |
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80 return |
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81 else: |
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82 if srcf and basef: |
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84 'revision and a base')) | |
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85 if detachf: |
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86 if not srcf: |
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87 raise error.ParseError( |
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88 'rebase', _('detach requires a revision to be specified')) |
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89 if basef: |
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90 raise error.ParseError( |
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91 'rebase', _('cannot specify a base with detach')) |
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92 |
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93 cmdutil.bail_if_changed(repo) |
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94 result = buildstate(repo, destf, srcf, basef, detachf) |
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95 if not result: |
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96 # Empty state built, nothing to rebase |
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97 ui.status(_('nothing to rebase\n')) |
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98 return |
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99 else: |
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100 originalwd, target, state = result |
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101 if collapsef: |
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102 targetancestors = set(repo.changelog.ancestors(target)) |
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103 external = checkexternal(repo, state, targetancestors) |
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104 |
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105 if keepbranchesf: |
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106 if extrafn: |
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107 raise error.ParseError( |
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108 'rebase', _('cannot use both keepbranches and extrafn')) |
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109 def extrafn(ctx, extra): |
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110 extra['branch'] = ctx.branch() |
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111 |
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112 # Rebase |
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113 if not targetancestors: |
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114 targetancestors = set(repo.changelog.ancestors(target)) |
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115 targetancestors.add(target) |
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116 |
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117 for rev in sorted(state): |
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118 if state[rev] == -1: |
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119 ui.debug("rebasing %d:%s\n" % (rev, repo[rev])) |
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120 storestatus(repo, originalwd, target, state, collapsef, keepf, |
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121 keepbranchesf, external) |
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122 p1, p2 = defineparents(repo, rev, target, state, |
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123 targetancestors) |
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124 if len(repo.parents()) == 2: |
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125 repo.ui.debug('resuming interrupted rebase\n') |
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126 else: |
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127 stats = rebasenode(repo, rev, p1, p2, state) |
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128 if stats and stats[3] > 0: |
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129 raise util.Abort(_('fix unresolved conflicts with hg ' |
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130 'resolve then run hg rebase --continue')) |
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131 updatedirstate(repo, rev, target, p2) |
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132 if not collapsef: |
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133 extra = {'rebase_source': repo[rev].hex()} |
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134 if extrafn: |
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135 extrafn(repo[rev], extra) |
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136 newrev = concludenode(repo, rev, p1, p2, extra=extra) |
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137 else: |
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138 # Skip commit if we are collapsing |
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139 repo.dirstate.setparents(repo[p1].node()) |
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140 newrev = None |
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141 # Update the state |
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142 if newrev is not None: |
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143 state[rev] = repo[newrev].rev() |
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144 else: |
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145 if not collapsef: |
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146 ui.note(_('no changes, revision %d skipped\n') % rev) |
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147 ui.debug('next revision set to %s\n' % p1) |
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148 skipped.add(rev) |
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149 state[rev] = p1 |
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150 |
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151 ui.note(_('rebase merging completed\n')) |
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152 |
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153 if collapsef: |
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154 p1, p2 = defineparents(repo, min(state), target, |
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155 state, targetancestors) |
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156 commitmsg = 'Collapsed revision' |
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157 for rebased in state: |
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158 if rebased not in skipped and state[rebased] != nullmerge: |
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159 commitmsg += '\n* %s' % repo[rebased].description() |
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160 commitmsg = ui.edit(commitmsg, repo.ui.username()) |
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161 newrev = concludenode(repo, rev, p1, external, commitmsg=commitmsg, |
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162 extra=extrafn) |
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163 |
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164 if 'qtip' in repo.tags(): |
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165 updatemq(repo, state, skipped, **opts) |
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166 |
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167 if not keepf: |
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168 # Remove no more useful revisions |
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169 rebased = [rev for rev in state if state[rev] != nullmerge] |
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170 if rebased: |
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171 if set(repo.changelog.descendants(min(rebased))) - set(state): |
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172 ui.warn(_("warning: new changesets detected " |
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173 "on source branch, not stripping\n")) |
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174 else: |
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175 repair.strip(ui, repo, repo[min(rebased)].node(), "strip") |
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176 |
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177 clearstatus(repo) |
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178 ui.status(_("rebase completed\n")) |
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179 if os.path.exists(repo.sjoin('undo')): |
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180 util.unlink(repo.sjoin('undo')) |
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181 if skipped: |
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182 ui.note(_("%d revisions have been skipped\n") % len(skipped)) |
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183 finally: |
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184 release(lock, wlock) |
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185 |
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186 def rebasemerge(repo, rev, first=False): |
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187 'return the correct ancestor' |
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188 oldancestor = ancestor.ancestor |
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189 |
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190 def newancestor(a, b, pfunc): |
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191 if b == rev: |
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192 return repo[rev].parents()[0].rev() |
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193 return oldancestor(a, b, pfunc) |
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194 |
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195 if not first: |
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196 ancestor.ancestor = newancestor |
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197 else: |
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198 repo.ui.debug("first revision, do not change ancestor\n") |
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199 try: |
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200 stats = merge.update(repo, rev, True, True, False) |
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201 return stats |
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202 finally: |
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203 ancestor.ancestor = oldancestor |
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204 |
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205 def checkexternal(repo, state, targetancestors): |
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206 """Check whether one or more external revisions need to be taken in |
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207 consideration. In the latter case, abort. |
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208 """ |
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209 external = nullrev |
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210 source = min(state) |
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211 for rev in state: |
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212 if rev == source: |
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213 continue |
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214 # Check externals and fail if there are more than one |
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215 for p in repo[rev].parents(): |
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216 if (p.rev() not in state |
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217 and p.rev() not in targetancestors): |
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218 if external != nullrev: |
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219 raise util.Abort(_('unable to collapse, there is more ' |
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220 'than one external parent')) |
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221 external = p.rev() |
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222 return external |
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223 |
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224 def updatedirstate(repo, rev, p1, p2): |
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225 """Keep track of renamed files in the revision that is going to be rebased |
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226 """ |
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227 # Here we simulate the copies and renames in the source changeset |
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228 cop, diver = copies.copies(repo, repo[rev], repo[p1], repo[p2], True) |
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229 m1 = repo[rev].manifest() |
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230 m2 = repo[p1].manifest() |
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231 for k, v in cop.iteritems(): |
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232 if k in m1: |
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233 if v in m1 or v in m2: |
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234 repo.dirstate.copy(v, k) |
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235 if v in m2 and v not in m1: |
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236 repo.dirstate.remove(v) |
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237 |
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238 def concludenode(repo, rev, p1, p2, commitmsg=None, extra=None): |
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239 'Commit the changes and store useful information in extra' |
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240 try: |
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241 repo.dirstate.setparents(repo[p1].node(), repo[p2].node()) |
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242 if commitmsg is None: |
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243 commitmsg = repo[rev].description() |
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244 if extra is None: |
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245 extra = {} |
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246 # Commit might fail if unresolved files exist |
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247 newrev = repo.commit(text=commitmsg, user=repo[rev].user(), |
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248 date=repo[rev].date(), extra=extra) |
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249 repo.dirstate.setbranch(repo[newrev].branch()) |
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250 return newrev |
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251 except util.Abort: |
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252 # Invalidate the previous setparents |
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253 repo.dirstate.invalidate() |
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254 raise |
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255 |
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256 def rebasenode(repo, rev, p1, p2, state): |
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257 'Rebase a single revision' |
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258 # Merge phase |
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259 # Update to target and merge it with local |
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260 if repo['.'].rev() != repo[p1].rev(): |
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261 repo.ui.debug(" update to %d:%s\n" % (repo[p1].rev(), repo[p1])) |
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262 merge.update(repo, p1, False, True, False) |
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263 else: |
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264 repo.ui.debug(" already in target\n") |
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265 repo.dirstate.write() |
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266 repo.ui.debug(" merge against %d:%s\n" % (repo[rev].rev(), repo[rev])) |
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267 first = repo[rev].rev() == repo[min(state)].rev() |
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268 stats = rebasemerge(repo, rev, first) |
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269 return stats |
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270 |
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271 def defineparents(repo, rev, target, state, targetancestors): |
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272 'Return the new parent relationship of the revision that will be rebased' |
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273 parents = repo[rev].parents() |
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274 p1 = p2 = nullrev |
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275 |
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276 P1n = parents[0].rev() |
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277 if P1n in targetancestors: |
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278 p1 = target |
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279 elif P1n in state: |
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280 if state[P1n] == nullmerge: |
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281 p1 = target |
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282 else: |
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283 p1 = state[P1n] |
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284 else: # P1n external |
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285 p1 = target |
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286 p2 = P1n |
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287 |
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288 if len(parents) == 2 and parents[1].rev() not in targetancestors: |
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289 P2n = parents[1].rev() |
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290 # interesting second parent |
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291 if P2n in state: |
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292 if p1 == target: # P1n in targetancestors or external |
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293 p1 = state[P2n] |
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294 else: |
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295 p2 = state[P2n] |
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296 else: # P2n external |
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297 if p2 != nullrev: # P1n external too => rev is a merged revision |
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298 raise util.Abort(_('cannot use revision %d as base, result ' |
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299 'would have 3 parents') % rev) |
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300 p2 = P2n |
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301 repo.ui.debug(" future parents are %d and %d\n" % |
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302 (repo[p1].rev(), repo[p2].rev())) |
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303 return p1, p2 |
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304 |
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305 def isagitpatch(repo, patchname): |
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306 'Return true if the given patch is in git format' |
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307 mqpatch = os.path.join(repo.mq.path, patchname) |
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308 for line in patch.linereader(file(mqpatch, 'rb')): |
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309 if line.startswith('diff --git'): |
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310 return True |
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311 return False |
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312 |
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313 def updatemq(repo, state, skipped, **opts): |
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314 'Update rebased mq patches - finalize and then import them' |
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315 mqrebase = {} |
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316 for p in repo.mq.applied: |
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317 if repo[p.rev].rev() in state: |
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318 repo.ui.debug('revision %d is an mq patch (%s), finalize it.\n' % |
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319 (repo[p.rev].rev(), p.name)) |
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320 mqrebase[repo[p.rev].rev()] = (p.name, isagitpatch(repo, p.name)) |
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321 |
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322 if mqrebase: |
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323 repo.mq.finish(repo, mqrebase.keys()) |
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324 |
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325 # We must start import from the newest revision |
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326 for rev in sorted(mqrebase, reverse=True): |
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327 if rev not in skipped: |
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328 repo.ui.debug('import mq patch %d (%s)\n' |
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329 % (state[rev], mqrebase[rev][0])) |
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330 repo.mq.qimport(repo, (), patchname=mqrebase[rev][0], |
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331 git=mqrebase[rev][1],rev=[str(state[rev])]) |
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332 repo.mq.save_dirty() |
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333 |
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334 def storestatus(repo, originalwd, target, state, collapse, keep, keepbranches, |
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335 external): |
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336 'Store the current status to allow recovery' |
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337 f = repo.opener("rebasestate", "w") |
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338 f.write(repo[originalwd].hex() + '\n') |
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339 f.write(repo[target].hex() + '\n') |
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340 f.write(repo[external].hex() + '\n') |
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341 f.write('%d\n' % int(collapse)) |
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342 f.write('%d\n' % int(keep)) |
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343 f.write('%d\n' % int(keepbranches)) |
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344 for d, v in state.iteritems(): |
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345 oldrev = repo[d].hex() |
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346 newrev = repo[v].hex() |
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347 f.write("%s:%s\n" % (oldrev, newrev)) |
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348 f.close() |
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349 repo.ui.debug('rebase status stored\n') |
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350 |
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351 def clearstatus(repo): |
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352 'Remove the status files' |
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353 if os.path.exists(repo.join("rebasestate")): |
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354 util.unlink(repo.join("rebasestate")) |
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355 |
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356 def restorestatus(repo): |
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357 'Restore a previously stored status' |
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358 try: |
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359 target = None |
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360 collapse = False |
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361 external = nullrev |
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362 state = {} |
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363 f = repo.opener("rebasestate") |
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364 for i, l in enumerate(f.read().splitlines()): |
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365 if i == 0: |
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366 originalwd = repo[l].rev() |
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367 elif i == 1: |
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368 target = repo[l].rev() |
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369 elif i == 2: |
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370 external = repo[l].rev() |
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371 elif i == 3: |
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372 collapse = bool(int(l)) |
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373 elif i == 4: |
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374 keep = bool(int(l)) |
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375 elif i == 5: |
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376 keepbranches = bool(int(l)) |
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377 else: |
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378 oldrev, newrev = l.split(':') |
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379 state[repo[oldrev].rev()] = repo[newrev].rev() |
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380 repo.ui.debug('rebase status resumed\n') |
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381 return originalwd, target, state, collapse, keep, keepbranches, external |
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382 except IOError, err: |
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383 if err.errno != errno.ENOENT: |
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384 raise |
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385 raise util.Abort(_('no rebase in progress')) |
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386 |
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387 def abort(repo, originalwd, target, state): |
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388 'Restore the repository to its original state' |
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389 if set(repo.changelog.descendants(target)) - set(state.values()): |
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390 repo.ui.warn(_("warning: new changesets detected on target branch, " |
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391 "not stripping\n")) |
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392 else: |
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393 # Strip from the first rebased revision |
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394 merge.update(repo, repo[originalwd].rev(), False, True, False) |
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395 rebased = filter(lambda x: x > -1, state.values()) |
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396 if rebased: |
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397 strippoint = min(rebased) |
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398 repair.strip(repo.ui, repo, repo[strippoint].node(), "strip") |
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399 clearstatus(repo) |
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400 repo.ui.status(_('rebase aborted\n')) |
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401 |
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402 def buildstate(repo, dest, src, base, detach): |
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403 'Define which revisions are going to be rebased and where' |
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404 targetancestors = set() |
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405 detachset = set() |
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406 |
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407 if not dest: |
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408 # Destination defaults to the latest revision in the current branch |
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409 branch = repo[None].branch() |
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410 dest = repo[branch].rev() |
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411 else: |
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412 if 'qtip' in repo.tags() and (repo[dest].hex() in |
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413 [s.rev for s in repo.mq.applied]): |
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414 raise util.Abort(_('cannot rebase onto an applied mq patch')) |
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415 dest = repo[dest].rev() |
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416 |
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417 if src: |
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418 commonbase = repo[src].ancestor(repo[dest]) |
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419 if commonbase == repo[src]: |
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420 raise util.Abort(_('source is ancestor of destination')) |
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421 if commonbase == repo[dest]: |
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422 raise util.Abort(_('source is descendant of destination')) |
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423 source = repo[src].rev() |
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424 if detach: |
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425 # We need to keep track of source's ancestors up to the common base |
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426 srcancestors = set(repo.changelog.ancestors(source)) |
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427 baseancestors = set(repo.changelog.ancestors(commonbase.rev())) |
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428 detachset = srcancestors - baseancestors |
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429 detachset.remove(commonbase.rev()) |
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430 else: |
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431 if base: |
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432 cwd = repo[base].rev() |
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433 else: |
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434 cwd = repo['.'].rev() |
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435 |
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436 if cwd == dest: |
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437 repo.ui.debug('source and destination are the same\n') |
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438 return None |
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439 |
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440 targetancestors = set(repo.changelog.ancestors(dest)) |
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441 if cwd in targetancestors: |
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442 repo.ui.debug('source is ancestor of destination\n') |
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443 return None |
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444 |
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445 cwdancestors = set(repo.changelog.ancestors(cwd)) |
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446 if dest in cwdancestors: |
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447 repo.ui.debug('source is descendant of destination\n') |
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448 return None |
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449 |
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450 cwdancestors.add(cwd) |
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451 rebasingbranch = cwdancestors - targetancestors |
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452 source = min(rebasingbranch) |
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453 |
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454 repo.ui.debug('rebase onto %d starting from %d\n' % (dest, source)) |
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455 state = dict.fromkeys(repo.changelog.descendants(source), nullrev) |
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456 state.update(dict.fromkeys(detachset, nullmerge)) |
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457 state[source] = nullrev |
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458 return repo['.'].rev(), repo[dest].rev(), state |
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459 |
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460 def pullrebase(orig, ui, repo, *args, **opts): |
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461 'Call rebase after pull if the latter has been invoked with --rebase' |
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462 if opts.get('rebase'): |
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463 if opts.get('update'): |
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464 del opts['update'] |
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465 ui.debug('--update and --rebase are not compatible, ignoring ' |
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466 'the update flag\n') |
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467 |
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468 cmdutil.bail_if_changed(repo) |
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469 revsprepull = len(repo) |
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470 orig(ui, repo, *args, **opts) |
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471 revspostpull = len(repo) |
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472 if revspostpull > revsprepull: |
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473 rebase(ui, repo, **opts) |
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474 branch = repo[None].branch() |
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475 dest = repo[branch].rev() |
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476 if dest != repo['.'].rev(): |
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477 # there was nothing to rebase we force an update |
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478 merge.update(repo, dest, False, False, False) |
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479 else: |
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480 orig(ui, repo, *args, **opts) |
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481 |
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482 def uisetup(ui): |
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483 'Replace pull with a decorator to provide --rebase option' |
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484 entry = extensions.wrapcommand(commands.table, 'pull', pullrebase) |
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485 entry[1].append(('', 'rebase', None, |
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486 _("rebase working directory to branch head")) |
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487 ) |
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488 |
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489 cmdtable = { |
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490 "rebase": |
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491 (rebase, |
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492 [ |
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493 ('s', 'source', '', _('rebase from a given revision')), |
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494 ('b', 'base', '', _('rebase from the base of a given revision')), |
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495 ('d', 'dest', '', _('rebase onto a given revision')), |
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496 ('', 'collapse', False, _('collapse the rebased changesets')), |
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497 ('', 'keep', False, _('keep original changesets')), |
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498 ('', 'keepbranches', False, _('keep original branch names')), |
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499 ('', 'detach', False, _('force detaching of source from its original ' |
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500 'branch')), |
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501 ('c', 'continue', False, _('continue an interrupted rebase')), |
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502 ('a', 'abort', False, _('abort an interrupted rebase'))] + |
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503 templateopts, |
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504 _('hg rebase [-s REV | -b REV] [-d REV] [--collapse] [--detach] ' |
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505 '[--keep] [--keepbranches] | [-c] | [-a]')), |
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506 } |