Mercurial > hg
annotate hgext/show.py @ 49032:3f6ef67e7a60
revert: ask user to confirm before tracking new file when interactive
If interactively reverting from a commit with `hg revert -i -r`, we
would unconditionally add files from that commit that are not already
tracked in the working copy. We have prompts for adding back files
removed in the working copy, but that's specific to such files and
does not apply to adding files from another revision.
Differential Revision: https://phab.mercurial-scm.org/D12416
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Mon, 28 Mar 2022 10:43:10 -0700 |
parents | 6000f5b25c9b |
children | f4733654f144 51057ab0dffa |
rev | line source |
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1 # show.py - Extension implementing `hg show` |
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2 # |
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3 # Copyright 2017 Gregory Szorc <gregory.szorc@gmail.com> |
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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 """unified command to show various repository information (EXPERIMENTAL) |
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9 |
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10 This extension provides the :hg:`show` command, which provides a central |
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11 command for displaying commonly-accessed repository data and views of that |
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12 data. |
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13 |
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14 The following config options can influence operation. |
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15 |
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16 ``commands`` |
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17 ------------ |
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18 |
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19 ``show.aliasprefix`` |
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20 List of strings that will register aliases for views. e.g. ``s`` will |
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21 effectively set config options ``alias.s<view> = show <view>`` for all |
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22 views. i.e. `hg swork` would execute `hg show work`. |
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23 |
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24 Aliases that would conflict with existing registrations will not be |
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25 performed. |
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26 """ |
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27 |
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28 |
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29 from mercurial.i18n import _ |
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30 from mercurial.node import nullrev |
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31 from mercurial import ( |
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32 cmdutil, |
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33 commands, |
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34 destutil, |
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35 error, |
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36 formatter, |
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37 graphmod, |
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38 logcmdutil, |
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39 phases, |
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40 pycompat, |
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41 registrar, |
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42 revset, |
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43 revsetlang, |
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44 scmutil, |
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45 ) |
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46 |
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47 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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48 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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49 # be specifying the version(s) of Mercurial they are tested with, or |
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50 # leave the attribute unspecified. |
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51 testedwith = b'ships-with-hg-core' |
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52 |
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53 cmdtable = {} |
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54 command = registrar.command(cmdtable) |
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55 |
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56 revsetpredicate = registrar.revsetpredicate() |
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57 |
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58 |
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59 class showcmdfunc(registrar._funcregistrarbase): |
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60 """Register a function to be invoked for an `hg show <thing>`.""" |
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61 |
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62 # Used by _formatdoc(). |
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63 _docformat = b'%s -- %s' |
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64 |
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65 def _extrasetup(self, name, func, fmtopic=None, csettopic=None): |
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66 """Called with decorator arguments to register a show view. |
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67 |
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68 ``name`` is the sub-command name. |
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69 |
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70 ``func`` is the function being decorated. |
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71 |
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72 ``fmtopic`` is the topic in the style that will be rendered for |
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73 this view. |
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74 |
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75 ``csettopic`` is the topic in the style to be used for a changeset |
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76 printer. |
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77 |
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78 If ``fmtopic`` is specified, the view function will receive a |
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79 formatter instance. If ``csettopic`` is specified, the view |
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80 function will receive a changeset printer. |
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81 """ |
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82 func._fmtopic = fmtopic |
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83 func._csettopic = csettopic |
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84 |
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85 |
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86 showview = showcmdfunc() |
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87 |
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88 |
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89 @command( |
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90 b'show', |
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91 [ |
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92 # TODO: Switch this template flag to use cmdutil.formatteropts if |
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93 # 'hg show' becomes stable before --template/-T is stable. For now, |
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94 # we are putting it here without the '(EXPERIMENTAL)' flag because it |
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95 # is an important part of the 'hg show' user experience and the entire |
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96 # 'hg show' experience is experimental. |
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97 (b'T', b'template', b'', b'display with template', _(b'TEMPLATE')), |
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98 ], |
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99 _(b'VIEW'), |
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100 helpcategory=command.CATEGORY_CHANGE_NAVIGATION, |
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101 ) |
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102 def show(ui, repo, view=None, template=None): |
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103 """show various repository information |
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104 |
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105 A requested view of repository data is displayed. |
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106 |
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107 If no view is requested, the list of available views is shown and the |
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108 command aborts. |
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109 |
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110 .. note:: |
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111 |
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112 There are no backwards compatibility guarantees for the output of this |
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113 command. Output may change in any future Mercurial release. |
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114 |
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115 Consumers wanting stable command output should specify a template via |
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116 ``-T/--template``. |
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117 |
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118 List of available views: |
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119 """ |
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120 if ui.plain() and not template: |
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121 hint = _(b'invoke with -T/--template to control output format') |
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122 raise error.Abort( |
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123 _(b'must specify a template in plain mode'), hint=hint |
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124 ) |
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125 |
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126 views = showview._table |
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127 |
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128 if not view: |
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129 ui.pager(b'show') |
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130 # TODO consider using formatter here so available views can be |
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131 # rendered to custom format. |
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132 ui.write(_(b'available views:\n')) |
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133 ui.write(b'\n') |
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134 |
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135 for name, func in sorted(views.items()): |
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136 ui.write(b'%s\n' % pycompat.sysbytes(func.__doc__)) |
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137 |
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138 ui.write(b'\n') |
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139 raise error.Abort( |
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140 _(b'no view requested'), |
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141 hint=_(b'use "hg show VIEW" to choose a view'), |
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142 ) |
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143 |
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144 # TODO use same logic as dispatch to perform prefix matching. |
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145 if view not in views: |
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146 raise error.Abort( |
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147 _(b'unknown view: %s') % view, |
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148 hint=_(b'run "hg show" to see available views'), |
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149 ) |
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150 |
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151 template = template or b'show' |
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152 |
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153 fn = views[view] |
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154 ui.pager(b'show') |
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155 |
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156 if fn._fmtopic: |
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157 fmtopic = b'show%s' % fn._fmtopic |
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158 with ui.formatter(fmtopic, {b'template': template}) as fm: |
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159 return fn(ui, repo, fm) |
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160 elif fn._csettopic: |
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161 ref = b'show%s' % fn._csettopic |
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162 spec = formatter.lookuptemplate(ui, ref, template) |
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163 displayer = logcmdutil.changesettemplater(ui, repo, spec, buffered=True) |
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164 return fn(ui, repo, displayer) |
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165 else: |
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166 return fn(ui, repo) |
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167 |
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168 |
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169 @showview(b'bookmarks', fmtopic=b'bookmarks') |
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170 def showbookmarks(ui, repo, fm): |
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171 """bookmarks and their associated changeset""" |
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172 marks = repo._bookmarks |
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173 if not len(marks): |
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174 # This is a bit hacky. Ideally, templates would have a way to |
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175 # specify an empty output, but we shouldn't corrupt JSON while |
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176 # waiting for this functionality. |
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177 if not isinstance(fm, formatter.jsonformatter): |
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178 ui.write(_(b'(no bookmarks set)\n')) |
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179 return |
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180 |
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181 revs = [repo[node].rev() for node in marks.values()] |
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182 active = repo._activebookmark |
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183 longestname = max(len(b) for b in marks) |
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184 nodelen = longestshortest(repo, revs) |
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185 |
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186 for bm, node in sorted(marks.items()): |
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187 fm.startitem() |
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188 fm.context(ctx=repo[node]) |
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189 fm.write(b'bookmark', b'%s', bm) |
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190 fm.write(b'node', fm.hexfunc(node), fm.hexfunc(node)) |
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191 fm.data( |
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192 active=bm == active, longestbookmarklen=longestname, nodelen=nodelen |
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193 ) |
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194 |
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195 |
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196 @showview(b'stack', csettopic=b'stack') |
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197 def showstack(ui, repo, displayer): |
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198 """current line of work""" |
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199 wdirctx = repo[b'.'] |
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200 if wdirctx.rev() == nullrev: |
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201 raise error.Abort( |
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202 _( |
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203 b'stack view only available when there is a ' |
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204 b'working directory' |
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205 ) |
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206 ) |
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207 |
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208 if wdirctx.phase() == phases.public: |
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209 ui.write( |
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210 _( |
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211 b'(empty stack; working directory parent is a published ' |
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212 b'changeset)\n' |
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213 ) |
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214 ) |
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215 return |
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216 |
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217 # TODO extract "find stack" into a function to facilitate |
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218 # customization and reuse. |
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219 |
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220 baserev = destutil.stackbase(ui, repo) |
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221 basectx = None |
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222 |
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223 if baserev is None: |
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224 baserev = wdirctx.rev() |
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225 stackrevs = {wdirctx.rev()} |
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226 else: |
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227 stackrevs = set(repo.revs(b'%d::.', baserev)) |
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228 |
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229 ctx = repo[baserev] |
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230 if ctx.p1().rev() != nullrev: |
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231 basectx = ctx.p1() |
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232 |
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233 # And relevant descendants. |
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234 branchpointattip = False |
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235 cl = repo.changelog |
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236 |
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237 for rev in cl.descendants([wdirctx.rev()]): |
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238 ctx = repo[rev] |
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239 |
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240 # Will only happen if . is public. |
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241 if ctx.phase() == phases.public: |
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242 break |
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243 |
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244 stackrevs.add(ctx.rev()) |
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245 |
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246 # ctx.children() within a function iterating on descandants |
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247 # potentially has severe performance concerns because revlog.children() |
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248 # iterates over all revisions after ctx's node. However, the number of |
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249 # draft changesets should be a reasonably small number. So even if |
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250 # this is quadratic, the perf impact should be minimal. |
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251 if len(ctx.children()) > 1: |
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252 branchpointattip = True |
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253 break |
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254 |
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255 stackrevs = list(sorted(stackrevs, reverse=True)) |
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256 |
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257 # Find likely target heads for the current stack. These are likely |
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258 # merge or rebase targets. |
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259 if basectx: |
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260 # TODO make this customizable? |
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261 newheads = set( |
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262 repo.revs( |
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263 b'heads(%d::) - %ld - not public()', basectx.rev(), stackrevs |
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264 ) |
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265 ) |
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266 else: |
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267 newheads = set() |
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268 |
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269 allrevs = set(stackrevs) | newheads | {baserev} |
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270 nodelen = longestshortest(repo, allrevs) |
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271 |
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272 try: |
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273 cmdutil.findcmd(b'rebase', commands.table) |
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274 haverebase = True |
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275 except (error.AmbiguousCommand, error.UnknownCommand): |
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276 haverebase = False |
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277 |
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278 # TODO use templating. |
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279 # TODO consider using graphmod. But it may not be necessary given |
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280 # our simplicity and the customizations required. |
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281 # TODO use proper graph symbols from graphmod |
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282 |
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283 tres = formatter.templateresources(ui, repo) |
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284 shortesttmpl = formatter.maketemplater( |
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285 ui, b'{shortest(node, %d)}' % nodelen, resources=tres |
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286 ) |
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287 |
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288 def shortest(ctx): |
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289 return shortesttmpl.renderdefault({b'ctx': ctx, b'node': ctx.hex()}) |
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290 |
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291 # We write out new heads to aid in DAG awareness and to help with decision |
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292 # making on how the stack should be reconciled with commits made since the |
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293 # branch point. |
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294 if newheads: |
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295 # Calculate distance from base so we can render the count and so we can |
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296 # sort display order by commit distance. |
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297 revdistance = {} |
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298 for head in newheads: |
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299 # There is some redundancy in DAG traversal here and therefore |
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300 # room to optimize. |
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301 ancestors = cl.ancestors([head], stoprev=basectx.rev()) |
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302 revdistance[head] = len(list(ancestors)) |
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303 |
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304 sourcectx = repo[stackrevs[-1]] |
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305 |
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306 sortedheads = sorted( |
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307 newheads, key=lambda x: revdistance[x], reverse=True |
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308 ) |
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309 |
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310 for i, rev in enumerate(sortedheads): |
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311 ctx = repo[rev] |
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312 |
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313 if i: |
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314 ui.write(b': ') |
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315 else: |
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316 ui.write(b' ') |
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317 |
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318 ui.writenoi18n(b'o ') |
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319 displayer.show(ctx, nodelen=nodelen) |
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320 displayer.flush(ctx) |
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321 ui.write(b'\n') |
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322 |
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323 if i: |
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324 ui.write(b':/') |
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325 else: |
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326 ui.write(b' /') |
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327 |
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328 ui.write(b' (') |
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329 ui.write( |
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330 _(b'%d commits ahead') % revdistance[rev], |
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331 label=b'stack.commitdistance', |
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332 ) |
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333 |
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334 if haverebase: |
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335 # TODO may be able to omit --source in some scenarios |
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336 ui.write(b'; ') |
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337 ui.write( |
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338 ( |
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339 b'hg rebase --source %s --dest %s' |
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340 % (shortest(sourcectx), shortest(ctx)) |
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341 ), |
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342 label=b'stack.rebasehint', |
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343 ) |
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344 |
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345 ui.write(b')\n') |
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346 |
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347 ui.write(b':\n: ') |
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348 ui.write(_(b'(stack head)\n'), label=b'stack.label') |
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349 |
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350 if branchpointattip: |
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351 ui.write(b' \\ / ') |
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352 ui.write(_(b'(multiple children)\n'), label=b'stack.label') |
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353 ui.write(b' |\n') |
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354 |
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355 for rev in stackrevs: |
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356 ctx = repo[rev] |
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357 symbol = b'@' if rev == wdirctx.rev() else b'o' |
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358 |
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359 if newheads: |
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360 ui.write(b': ') |
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361 else: |
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362 ui.write(b' ') |
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363 |
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364 ui.write(symbol, b' ') |
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365 displayer.show(ctx, nodelen=nodelen) |
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366 displayer.flush(ctx) |
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367 ui.write(b'\n') |
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368 |
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369 # TODO display histedit hint? |
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370 |
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371 if basectx: |
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372 # Vertically and horizontally separate stack base from parent |
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373 # to reinforce stack boundary. |
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374 if newheads: |
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375 ui.write(b':/ ') |
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376 else: |
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377 ui.write(b' / ') |
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378 |
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379 ui.write(_(b'(stack base)'), b'\n', label=b'stack.label') |
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380 ui.writenoi18n(b'o ') |
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381 |
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382 displayer.show(basectx, nodelen=nodelen) |
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383 displayer.flush(basectx) |
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384 ui.write(b'\n') |
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385 |
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386 |
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387 @revsetpredicate(b'_underway([commitage[, headage]])') |
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388 def underwayrevset(repo, subset, x): |
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389 args = revset.getargsdict(x, b'underway', b'commitage headage') |
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390 if b'commitage' not in args: |
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391 args[b'commitage'] = None |
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392 if b'headage' not in args: |
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393 args[b'headage'] = None |
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394 |
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395 # We assume callers of this revset add a topographical sort on the |
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396 # result. This means there is no benefit to making the revset lazy |
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397 # since the topographical sort needs to consume all revs. |
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398 # |
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399 # With this in mind, we build up the set manually instead of constructing |
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400 # a complex revset. This enables faster execution. |
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401 |
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402 # Mutable changesets (non-public) are the most important changesets |
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403 # to return. ``not public()`` will also pull in obsolete changesets if |
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404 # there is a non-obsolete changeset with obsolete ancestors. This is |
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405 # why we exclude obsolete changesets from this query. |
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406 rs = b'not public() and not obsolete()' |
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407 rsargs = [] |
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408 if args[b'commitage']: |
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409 rs += b' and date(%s)' |
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410 rsargs.append( |
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411 revsetlang.getstring( |
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412 args[b'commitage'], _(b'commitage requires a string') |
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413 ) |
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414 ) |
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415 |
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416 mutable = repo.revs(rs, *rsargs) |
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417 relevant = revset.baseset(mutable) |
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418 |
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419 # Add parents of mutable changesets to provide context. |
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420 relevant += repo.revs(b'parents(%ld)', mutable) |
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421 |
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422 # We also pull in (public) heads if they a) aren't closing a branch |
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423 # b) are recent. |
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424 rs = b'head() and not closed()' |
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425 rsargs = [] |
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426 if args[b'headage']: |
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427 rs += b' and date(%s)' |
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428 rsargs.append( |
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429 revsetlang.getstring( |
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430 args[b'headage'], _(b'headage requires a string') |
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431 ) |
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432 ) |
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433 |
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434 relevant += repo.revs(rs, *rsargs) |
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435 |
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436 # Add working directory parent. |
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437 wdirrev = repo[b'.'].rev() |
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438 if wdirrev != nullrev: |
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439 relevant += revset.baseset({wdirrev}) |
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440 |
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441 return subset & relevant |
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442 |
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443 |
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444 @showview(b'work', csettopic=b'work') |
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445 def showwork(ui, repo, displayer): |
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446 """changesets that aren't finished""" |
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447 # TODO support date-based limiting when calling revset. |
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448 revs = repo.revs(b'sort(_underway(), topo)') |
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449 nodelen = longestshortest(repo, revs) |
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450 |
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451 revdag = graphmod.dagwalker(repo, revs) |
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452 |
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453 ui.setconfig(b'experimental', b'graphshorten', True) |
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454 logcmdutil.displaygraph( |
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455 ui, |
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456 repo, |
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457 revdag, |
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458 displayer, |
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459 graphmod.asciiedges, |
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460 props={b'nodelen': nodelen}, |
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461 ) |
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462 |
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463 |
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464 def extsetup(ui): |
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465 # Alias `hg <prefix><view>` to `hg show <view>`. |
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466 for prefix in ui.configlist(b'commands', b'show.aliasprefix'): |
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467 for view in showview._table: |
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468 name = b'%s%s' % (prefix, view) |
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469 |
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470 choice, allcommands = cmdutil.findpossible( |
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471 name, commands.table, strict=True |
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472 ) |
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473 |
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474 # This alias is already a command name. Don't set it. |
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475 if name in choice: |
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476 continue |
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477 |
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478 # Same for aliases. |
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479 if ui.config(b'alias', name, None): |
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480 continue |
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481 |
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482 ui.setconfig(b'alias', name, b'show %s' % view, source=b'show') |
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483 |
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484 |
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485 def longestshortest(repo, revs, minlen=4): |
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486 """Return the length of the longest shortest node to identify revisions. |
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487 |
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488 The result of this function can be used with the ``shortest()`` template |
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489 function to ensure that a value is unique and unambiguous for a given |
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490 set of nodes. |
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491 |
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492 The number of revisions in the repo is taken into account to prevent |
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493 a numeric node prefix from conflicting with an integer revision number. |
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494 If we fail to do this, a value of e.g. ``10023`` could mean either |
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495 revision 10023 or node ``10023abc...``. |
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496 """ |
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497 if not revs: |
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498 return minlen |
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499 cl = repo.changelog |
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500 return max( |
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501 len(scmutil.shortesthexnodeidprefix(repo, cl.node(r), minlen)) |
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502 for r in revs |
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503 ) |
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504 |
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505 |
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506 # Adjust the docstring of the show command so it shows all registered views. |
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507 # This is a bit hacky because it runs at the end of module load. When moved |
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508 # into core or when another extension wants to provide a view, we'll need |
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509 # to do this more robustly. |
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510 # TODO make this more robust. |
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511 def _updatedocstring(): |
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512 longest = max(map(len, showview._table.keys())) |
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513 entries = [] |
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514 for key in sorted(showview._table.keys()): |
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515 entries.append( |
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516 r' %s %s' |
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517 % ( |
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518 pycompat.sysstr(key.ljust(longest)), |
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519 showview._table[key]._origdoc, |
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520 ) |
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521 ) |
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522 |
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523 cmdtable[b'show'][0].__doc__ = pycompat.sysstr(b'%s\n\n%s\n ') % ( |
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524 cmdtable[b'show'][0].__doc__.rstrip(), |
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525 pycompat.sysstr(b'\n\n').join(entries), |
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526 ) |
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527 |
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528 |
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529 _updatedocstring() |