Mercurial > hg
annotate mercurial/destutil.py @ 29440:009cc6c89d0f
chg: silence warning of unused parameter 'sig'
author | Yuya Nishihara <yuya@tcha.org> |
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date | Tue, 28 Jun 2016 22:39:06 +0900 |
parents | 1c7167009936 |
children | 40f845537dca |
rev | line source |
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1 # destutil.py - Mercurial utility function for command destination |
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2 # |
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3 # Copyright Matt Mackall <mpm@selenic.com> and other |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 from .i18n import _ |
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11 from . import ( |
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12 bookmarks, |
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13 error, |
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14 obsolete, |
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15 ) |
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16 |
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17 def _destupdatevalidate(repo, rev, clean, check): |
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18 """validate that the destination comply to various rules |
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19 |
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20 This exists as its own function to help wrapping from extensions.""" |
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21 wc = repo[None] |
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22 p1 = wc.p1() |
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23 if not clean: |
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24 # Check that the update is linear. |
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25 # |
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26 # Mercurial do not allow update-merge for non linear pattern |
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27 # (that would be technically possible but was considered too confusing |
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28 # for user a long time ago) |
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29 # |
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30 # See mercurial.merge.update for details |
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31 if p1.rev() not in repo.changelog.ancestors([rev], inclusive=True): |
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32 dirty = wc.dirty(missing=True) |
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33 foreground = obsolete.foreground(repo, [p1.node()]) |
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34 if not repo[rev].node() in foreground: |
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35 if dirty: |
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36 msg = _("uncommitted changes") |
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37 hint = _("commit and merge, or update --clean to" |
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38 " discard changes") |
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39 raise error.UpdateAbort(msg, hint=hint) |
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40 elif not check: # destination is not a descendant. |
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41 msg = _("not a linear update") |
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42 hint = _("merge or update --check to force update") |
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43 raise error.UpdateAbort(msg, hint=hint) |
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44 |
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45 def _destupdateobs(repo, clean, check): |
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46 """decide of an update destination from obsolescence markers""" |
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47 node = None |
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48 wc = repo[None] |
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49 p1 = wc.p1() |
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50 movemark = None |
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51 |
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52 if p1.obsolete() and not p1.children(): |
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53 # allow updating to successors |
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54 successors = obsolete.successorssets(repo, p1.node()) |
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55 |
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56 # behavior of certain cases is as follows, |
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57 # |
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58 # divergent changesets: update to highest rev, similar to what |
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59 # is currently done when there are more than one head |
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60 # (i.e. 'tip') |
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61 # |
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62 # replaced changesets: same as divergent except we know there |
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63 # is no conflict |
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64 # |
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65 # pruned changeset: no update is done; though, we could |
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66 # consider updating to the first non-obsolete parent, |
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67 # similar to what is current done for 'hg prune' |
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68 |
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69 if successors: |
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70 # flatten the list here handles both divergent (len > 1) |
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71 # and the usual case (len = 1) |
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72 successors = [n for sub in successors for n in sub] |
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73 |
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74 # get the max revision for the given successors set, |
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75 # i.e. the 'tip' of a set |
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76 node = repo.revs('max(%ln)', successors).first() |
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77 if bookmarks.isactivewdirparent(repo): |
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78 movemark = repo['.'].node() |
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79 return node, movemark, None |
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80 |
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81 def _destupdatebook(repo, clean, check): |
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82 """decide on an update destination from active bookmark""" |
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83 # we also move the active bookmark, if any |
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84 activemark = None |
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85 node, movemark = bookmarks.calculateupdate(repo.ui, repo, None) |
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86 if node is not None: |
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87 activemark = node |
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88 return node, movemark, activemark |
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89 |
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90 def _destupdatebranch(repo, clean, check): |
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91 """decide on an update destination from current branch |
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92 |
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93 This ignores closed branch heads. |
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94 """ |
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95 wc = repo[None] |
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96 movemark = node = None |
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97 currentbranch = wc.branch() |
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98 |
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99 if clean: |
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100 currentbranch = repo['.'].branch() |
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101 |
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102 if currentbranch in repo.branchmap(): |
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103 heads = repo.branchheads(currentbranch) |
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104 if heads: |
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105 node = repo.revs('max(.::(%ln))', heads).first() |
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106 if bookmarks.isactivewdirparent(repo): |
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107 movemark = repo['.'].node() |
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108 elif currentbranch == 'default' and not wc.p1(): |
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109 # "null" parent belongs to "default" branch, but it doesn't exist, so |
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110 # update to the tipmost non-closed branch head |
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111 node = repo.revs('max(head() and not closed())').first() |
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112 else: |
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113 node = repo['.'].node() |
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114 return node, movemark, None |
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115 |
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116 def _destupdatebranchfallback(repo, clean, check): |
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117 """decide on an update destination from closed heads in current branch""" |
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118 wc = repo[None] |
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119 currentbranch = wc.branch() |
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120 movemark = None |
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121 if currentbranch in repo.branchmap(): |
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122 # here, all descendant branch heads are closed |
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123 heads = repo.branchheads(currentbranch, closed=True) |
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124 assert heads, "any branch has at least one head" |
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125 node = repo.revs('max(.::(%ln))', heads).first() |
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126 assert node is not None, ("any revision has at least " |
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127 "one descendant branch head") |
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128 if bookmarks.isactivewdirparent(repo): |
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129 movemark = repo['.'].node() |
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130 else: |
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131 # here, no "default" branch, and all branches are closed |
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132 node = repo.lookup('tip') |
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133 assert node is not None, "'tip' exists even in empty repository" |
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134 return node, movemark, None |
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135 |
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136 # order in which each step should be evalutated |
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137 # steps are run until one finds a destination |
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138 destupdatesteps = ['evolution', 'bookmark', 'branch', 'branchfallback'] |
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139 # mapping to ease extension overriding steps. |
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140 destupdatestepmap = {'evolution': _destupdateobs, |
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141 'bookmark': _destupdatebook, |
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142 'branch': _destupdatebranch, |
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143 'branchfallback': _destupdatebranchfallback, |
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144 } |
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145 |
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146 def destupdate(repo, clean=False, check=False): |
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147 """destination for bare update operation |
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148 |
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149 return (rev, movemark, activemark) |
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150 |
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151 - rev: the revision to update to, |
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152 - movemark: node to move the active bookmark from |
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153 (cf bookmark.calculate update), |
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154 - activemark: a bookmark to activate at the end of the update. |
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155 """ |
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156 node = movemark = activemark = None |
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157 |
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158 for step in destupdatesteps: |
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159 node, movemark, activemark = destupdatestepmap[step](repo, clean, check) |
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160 if node is not None: |
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161 break |
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162 rev = repo[node].rev() |
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163 |
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164 _destupdatevalidate(repo, rev, clean, check) |
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165 |
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166 return rev, movemark, activemark |
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167 |
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168 msgdestmerge = { |
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169 # too many matching divergent bookmark |
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170 'toomanybookmarks': |
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171 {'merge': |
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172 (_("multiple matching bookmarks to merge -" |
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173 " please merge with an explicit rev or bookmark"), |
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174 _("run 'hg heads' to see all heads")), |
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175 'rebase': |
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176 (_("multiple matching bookmarks to rebase -" |
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177 " please rebase to an explicit rev or bookmark"), |
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178 _("run 'hg heads' to see all heads")), |
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179 }, |
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180 # no other matching divergent bookmark |
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181 'nootherbookmarks': |
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182 {'merge': |
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183 (_("no matching bookmark to merge - " |
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184 "please merge with an explicit rev or bookmark"), |
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185 _("run 'hg heads' to see all heads")), |
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186 'rebase': |
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187 (_("no matching bookmark to rebase - " |
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188 "please rebase to an explicit rev or bookmark"), |
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189 _("run 'hg heads' to see all heads")), |
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190 }, |
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191 # branch have too many unbookmarked heads, no obvious destination |
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192 'toomanyheads': |
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193 {'merge': |
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194 (_("branch '%s' has %d heads - please merge with an explicit rev"), |
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195 _("run 'hg heads .' to see heads")), |
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196 'rebase': |
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197 (_("branch '%s' has %d heads - please rebase to an explicit rev"), |
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198 _("run 'hg heads .' to see heads")), |
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199 }, |
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200 # branch have no other unbookmarked heads |
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201 'bookmarkedheads': |
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202 {'merge': |
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203 (_("heads are bookmarked - please merge with an explicit rev"), |
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204 _("run 'hg heads' to see all heads")), |
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205 'rebase': |
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206 (_("heads are bookmarked - please rebase to an explicit rev"), |
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207 _("run 'hg heads' to see all heads")), |
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208 }, |
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209 # branch have just a single heads, but there is other branches |
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210 'nootherbranchheads': |
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211 {'merge': |
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212 (_("branch '%s' has one head - please merge with an explicit rev"), |
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213 _("run 'hg heads' to see all heads")), |
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214 'rebase': |
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215 (_("branch '%s' has one head - please rebase to an explicit rev"), |
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216 _("run 'hg heads' to see all heads")), |
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217 }, |
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218 # repository have a single head |
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219 'nootherheads': |
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220 {'merge': |
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221 (_('nothing to merge'), |
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222 None), |
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223 'rebase': |
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224 (_('nothing to rebase'), |
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225 None), |
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226 }, |
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227 # repository have a single head and we are not on it |
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228 'nootherheadsbehind': |
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229 {'merge': |
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230 (_('nothing to merge'), |
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231 _("use 'hg update' instead")), |
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232 'rebase': |
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233 (_('nothing to rebase'), |
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234 _("use 'hg update' instead")), |
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235 }, |
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236 # We are not on a head |
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237 'notatheads': |
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238 {'merge': |
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239 (_('working directory not at a head revision'), |
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240 _("use 'hg update' or merge with an explicit revision")), |
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241 'rebase': |
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242 (_('working directory not at a head revision'), |
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243 _("use 'hg update' or rebase to an explicit revision")) |
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244 }, |
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245 'emptysourceset': |
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246 {'merge': |
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247 (_('source set is empty'), |
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248 None), |
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249 'rebase': |
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250 (_('source set is empty'), |
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251 None), |
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252 }, |
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253 'multiplebranchessourceset': |
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254 {'merge': |
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255 (_('source set is rooted in multiple branches'), |
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256 None), |
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257 'rebase': |
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258 (_('rebaseset is rooted in multiple named branches'), |
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259 _('specify an explicit destination with --dest')), |
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260 }, |
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261 } |
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262 |
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263 def _destmergebook(repo, action='merge', sourceset=None, destspace=None): |
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264 """find merge destination in the active bookmark case""" |
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265 node = None |
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266 bmheads = repo.bookmarkheads(repo._activebookmark) |
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267 curhead = repo[repo._activebookmark].node() |
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268 if len(bmheads) == 2: |
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269 if curhead == bmheads[0]: |
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270 node = bmheads[1] |
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271 else: |
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272 node = bmheads[0] |
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273 elif len(bmheads) > 2: |
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274 msg, hint = msgdestmerge['toomanybookmarks'][action] |
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275 raise error.ManyMergeDestAbort(msg, hint=hint) |
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276 elif len(bmheads) <= 1: |
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277 msg, hint = msgdestmerge['nootherbookmarks'][action] |
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278 raise error.NoMergeDestAbort(msg, hint=hint) |
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279 assert node is not None |
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280 return node |
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281 |
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282 def _destmergebranch(repo, action='merge', sourceset=None, onheadcheck=True, |
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283 destspace=None): |
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284 """find merge destination based on branch heads""" |
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285 node = None |
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286 |
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287 if sourceset is None: |
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288 sourceset = [repo[repo.dirstate.p1()].rev()] |
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289 branch = repo.dirstate.branch() |
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290 elif not sourceset: |
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291 msg, hint = msgdestmerge['emptysourceset'][action] |
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292 raise error.NoMergeDestAbort(msg, hint=hint) |
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293 else: |
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294 branch = None |
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295 for ctx in repo.set('roots(%ld::%ld)', sourceset, sourceset): |
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296 if branch is not None and ctx.branch() != branch: |
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297 msg, hint = msgdestmerge['multiplebranchessourceset'][action] |
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298 raise error.ManyMergeDestAbort(msg, hint=hint) |
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299 branch = ctx.branch() |
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300 |
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301 bheads = repo.branchheads(branch) |
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302 onhead = repo.revs('%ld and %ln', sourceset, bheads) |
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303 if onheadcheck and not onhead: |
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304 # Case A: working copy if not on a head. (merge only) |
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305 # |
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306 # This is probably a user mistake We bailout pointing at 'hg update' |
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307 if len(repo.heads()) <= 1: |
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308 msg, hint = msgdestmerge['nootherheadsbehind'][action] |
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309 else: |
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310 msg, hint = msgdestmerge['notatheads'][action] |
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311 raise error.Abort(msg, hint=hint) |
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312 # remove heads descendants of source from the set |
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313 bheads = list(repo.revs('%ln - (%ld::)', bheads, sourceset)) |
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314 # filters out bookmarked heads |
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315 nbhs = list(repo.revs('%ld - bookmark()', bheads)) |
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316 |
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317 if destspace is not None: |
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318 # restrict search space |
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319 # used in the 'hg pull --rebase' case, see issue 5214. |
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320 nbhs = list(repo.revs('%ld and %ld', destspace, nbhs)) |
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321 |
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322 if len(nbhs) > 1: |
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323 # Case B: There is more than 1 other anonymous heads |
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324 # |
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325 # This means that there will be more than 1 candidate. This is |
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326 # ambiguous. We abort asking the user to pick as explicit destination |
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327 # instead. |
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328 msg, hint = msgdestmerge['toomanyheads'][action] |
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329 msg %= (branch, len(bheads) + 1) |
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330 raise error.ManyMergeDestAbort(msg, hint=hint) |
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331 elif not nbhs: |
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332 # Case B: There is no other anonymous heads |
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333 # |
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334 # This means that there is no natural candidate to merge with. |
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335 # We abort, with various messages for various cases. |
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336 if bheads: |
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337 msg, hint = msgdestmerge['bookmarkedheads'][action] |
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338 elif len(repo.heads()) > 1: |
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339 msg, hint = msgdestmerge['nootherbranchheads'][action] |
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340 msg %= branch |
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341 elif not onhead: |
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342 # if 'onheadcheck == False' (rebase case), |
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343 # this was not caught in Case A. |
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344 msg, hint = msgdestmerge['nootherheadsbehind'][action] |
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345 else: |
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346 msg, hint = msgdestmerge['nootherheads'][action] |
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347 raise error.NoMergeDestAbort(msg, hint=hint) |
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348 else: |
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349 node = nbhs[0] |
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350 assert node is not None |
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351 return node |
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352 |
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353 def destmerge(repo, action='merge', sourceset=None, onheadcheck=True, |
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354 destspace=None): |
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355 """return the default destination for a merge |
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356 |
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357 (or raise exception about why it can't pick one) |
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358 |
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359 :action: the action being performed, controls emitted error message |
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360 """ |
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361 # destspace is here to work around issues with `hg pull --rebase` see |
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362 # issue5214 for details |
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363 if repo._activebookmark: |
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364 node = _destmergebook(repo, action=action, sourceset=sourceset, |
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365 destspace=destspace) |
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366 else: |
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367 node = _destmergebranch(repo, action=action, sourceset=sourceset, |
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368 onheadcheck=onheadcheck, destspace=destspace) |
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369 return repo[node].rev() |
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370 |
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371 histeditdefaultrevset = 'reverse(only(.) and not public() and not ::merge())' |
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372 |
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373 def desthistedit(ui, repo): |
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374 """Default base revision to edit for `hg histedit`.""" |
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375 # Avoid cycle: scmutil -> revset -> destutil |
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376 from . import scmutil |
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377 |
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378 default = ui.config('histedit', 'defaultrev', histeditdefaultrevset) |
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379 if default: |
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380 revs = scmutil.revrange(repo, [default]) |
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381 if revs: |
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382 # The revset supplied by the user may not be in ascending order nor |
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383 # take the first revision. So do this manually. |
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384 revs.sort() |
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385 return revs.first() |
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386 |
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387 return None |
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388 |
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389 def _statusotherbook(ui, repo): |
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390 bmheads = repo.bookmarkheads(repo._activebookmark) |
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391 curhead = repo[repo._activebookmark].node() |
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392 if repo.revs('%n and parents()', curhead): |
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393 # we are on the active bookmark |
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394 bmheads = [b for b in bmheads if curhead != b] |
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395 if bmheads: |
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396 msg = _('%i other divergent bookmarks for "%s"\n') |
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397 ui.status(msg % (len(bmheads), repo._activebookmark)) |
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398 |
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399 def _statusotherbranchheads(ui, repo): |
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400 currentbranch = repo.dirstate.branch() |
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401 allheads = repo.branchheads(currentbranch, closed=True) |
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402 heads = repo.branchheads(currentbranch) |
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403 if repo.revs('%ln and parents()', allheads): |
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404 # we are on a head, even though it might be closed |
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405 # |
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406 # on closed otherheads |
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407 # ========= ========== |
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408 # o 0 all heads for current branch are closed |
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409 # N only descendant branch heads are closed |
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410 # x 0 there is only one non-closed branch head |
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411 # N there are some non-closed branch heads |
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412 # ========= ========== |
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413 otherheads = repo.revs('%ln - parents()', heads) |
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414 if repo['.'].closesbranch(): |
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415 ui.warn(_('no open descendant heads on branch "%s", ' |
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416 'updating to a closed head\n') % |
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417 (currentbranch)) |
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418 if otherheads: |
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419 ui.warn(_('(committing will reopen the head, ' |
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420 'use `hg heads .` to see %i other heads)\n') % |
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421 (len(otherheads))) |
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422 else: |
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423 ui.warn(_('(committing will reopen branch "%s")\n') % |
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424 (currentbranch)) |
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425 elif otherheads: |
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426 ui.status(_('%i other heads for branch "%s"\n') % |
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427 (len(otherheads), currentbranch)) |
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428 |
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429 def statusotherdests(ui, repo): |
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430 """Print message about other head""" |
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431 # XXX we should probably include a hint: |
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432 # - about what to do |
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433 # - how to see such heads |
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434 if repo._activebookmark: |
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435 _statusotherbook(ui, repo) |
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436 else: |
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437 _statusotherbranchheads(ui, repo) |