annotate hgext/show.py @ 33671:38fc45721334

changegroup: wrap some ** expansions in strkwargs
author Augie Fackler <augie@google.com>
date Mon, 24 Jul 2017 11:16:53 -0400
parents f48422ab81aa
children 4441c1113eb2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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 from __future__ import absolute_import
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29
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30 from mercurial.i18n import _
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31 from mercurial.node import nullrev
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32 from mercurial import (
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33 cmdutil,
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34 commands,
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35 destutil,
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36 error,
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37 formatter,
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38 graphmod,
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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 )
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45
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46 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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47 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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48 # be specifying the version(s) of Mercurial they are tested with, or
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49 # leave the attribute unspecified.
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50 testedwith = 'ships-with-hg-core'
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51
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52 cmdtable = {}
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53 command = registrar.command(cmdtable)
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54 revsetpredicate = registrar.revsetpredicate()
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55
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56 class showcmdfunc(registrar._funcregistrarbase):
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57 """Register a function to be invoked for an `hg show <thing>`."""
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58
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59 # Used by _formatdoc().
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60 _docformat = '%s -- %s'
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61
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62 def _extrasetup(self, name, func, fmtopic=None, csettopic=None):
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63 """Called with decorator arguments to register a show view.
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64
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65 ``name`` is the sub-command name.
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66
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67 ``func`` is the function being decorated.
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68
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69 ``fmtopic`` is the topic in the style that will be rendered for
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70 this view.
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71
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72 ``csettopic`` is the topic in the style to be used for a changeset
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73 printer.
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74
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75 If ``fmtopic`` is specified, the view function will receive a
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76 formatter instance. If ``csettopic`` is specified, the view
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77 function will receive a changeset printer.
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78 """
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79 func._fmtopic = fmtopic
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80 func._csettopic = csettopic
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81
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82 showview = showcmdfunc()
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83
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84 @command('show', [
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85 # TODO: Switch this template flag to use cmdutil.formatteropts if
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86 # 'hg show' becomes stable before --template/-T is stable. For now,
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87 # we are putting it here without the '(EXPERIMENTAL)' flag because it
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88 # is an important part of the 'hg show' user experience and the entire
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89 # 'hg show' experience is experimental.
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90 ('T', 'template', '', ('display with template'), _('TEMPLATE')),
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91 ], _('VIEW'))
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92 def show(ui, repo, view=None, template=None):
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93 """show various repository information
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94
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95 A requested view of repository data is displayed.
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96
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97 If no view is requested, the list of available views is shown and the
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98 command aborts.
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99
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100 .. note::
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101
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102 There are no backwards compatibility guarantees for the output of this
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103 command. Output may change in any future Mercurial release.
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104
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105 Consumers wanting stable command output should specify a template via
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106 ``-T/--template``.
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107
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108 List of available views:
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109 """
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110 if ui.plain() and not template:
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111 hint = _('invoke with -T/--template to control output format')
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112 raise error.Abort(_('must specify a template in plain mode'), hint=hint)
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113
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114 views = showview._table
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115
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116 if not view:
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117 ui.pager('show')
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118 # TODO consider using formatter here so available views can be
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119 # rendered to custom format.
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120 ui.write(_('available views:\n'))
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121 ui.write('\n')
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122
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123 for name, func in sorted(views.items()):
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124 ui.write(('%s\n') % func.__doc__)
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125
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126 ui.write('\n')
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127 raise error.Abort(_('no view requested'),
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128 hint=_('use "hg show VIEW" to choose a view'))
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129
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130 # TODO use same logic as dispatch to perform prefix matching.
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131 if view not in views:
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132 raise error.Abort(_('unknown view: %s') % view,
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133 hint=_('run "hg show" to see available views'))
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134
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135 template = template or 'show'
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136
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137 fn = views[view]
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138 ui.pager('show')
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139
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140 if fn._fmtopic:
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141 fmtopic = 'show%s' % fn._fmtopic
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142 with ui.formatter(fmtopic, {'template': template}) as fm:
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143 return fn(ui, repo, fm)
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144 elif fn._csettopic:
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145 ref = 'show%s' % fn._csettopic
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146 spec = formatter.lookuptemplate(ui, ref, template)
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147 displayer = cmdutil.changeset_templater(ui, repo, spec, buffered=True)
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148 return fn(ui, repo, displayer)
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149 else:
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150 return fn(ui, repo)
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151
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152 @showview('bookmarks', fmtopic='bookmarks')
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153 def showbookmarks(ui, repo, fm):
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154 """bookmarks and their associated changeset"""
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155 marks = repo._bookmarks
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156 if not len(marks):
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157 # This is a bit hacky. Ideally, templates would have a way to
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158 # specify an empty output, but we shouldn't corrupt JSON while
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159 # waiting for this functionality.
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160 if not isinstance(fm, formatter.jsonformatter):
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161 ui.write(_('(no bookmarks set)\n'))
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162 return
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163
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164 active = repo._activebookmark
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165 longestname = max(len(b) for b in marks)
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166 # TODO consider exposing longest shortest(node).
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167
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168 for bm, node in sorted(marks.items()):
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169 fm.startitem()
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170 fm.context(ctx=repo[node])
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171 fm.write('bookmark', '%s', bm)
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172 fm.write('node', fm.hexfunc(node), fm.hexfunc(node))
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173 fm.data(active=bm == active,
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174 longestbookmarklen=longestname)
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175
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176 @showview('stack', csettopic='stack')
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177 def showstack(ui, repo, displayer):
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178 """current line of work"""
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179 wdirctx = repo['.']
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180 if wdirctx.rev() == nullrev:
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181 raise error.Abort(_('stack view only available when there is a '
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182 'working directory'))
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183
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184 if wdirctx.phase() == phases.public:
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185 ui.write(_('(empty stack; working directory parent is a published '
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186 'changeset)\n'))
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187 return
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188
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189 # TODO extract "find stack" into a function to facilitate
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190 # customization and reuse.
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191
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192 baserev = destutil.stackbase(ui, repo)
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193 basectx = None
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194
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195 if baserev is None:
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196 baserev = wdirctx.rev()
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197 stackrevs = {wdirctx.rev()}
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198 else:
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199 stackrevs = set(repo.revs('%d::.', baserev))
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200
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201 ctx = repo[baserev]
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202 if ctx.p1().rev() != nullrev:
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203 basectx = ctx.p1()
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204
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205 # And relevant descendants.
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206 branchpointattip = False
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207 cl = repo.changelog
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208
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209 for rev in cl.descendants([wdirctx.rev()]):
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210 ctx = repo[rev]
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211
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212 # Will only happen if . is public.
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213 if ctx.phase() == phases.public:
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214 break
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215
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216 stackrevs.add(ctx.rev())
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217
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218 # ctx.children() within a function iterating on descandants
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219 # potentially has severe performance concerns because revlog.children()
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220 # iterates over all revisions after ctx's node. However, the number of
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221 # draft changesets should be a reasonably small number. So even if
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222 # this is quadratic, the perf impact should be minimal.
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223 if len(ctx.children()) > 1:
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224 branchpointattip = True
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225 break
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226
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227 stackrevs = list(sorted(stackrevs, reverse=True))
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228
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229 # Find likely target heads for the current stack. These are likely
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230 # merge or rebase targets.
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231 if basectx:
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232 # TODO make this customizable?
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233 newheads = set(repo.revs('heads(%d::) - %ld - not public()',
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234 basectx.rev(), stackrevs))
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235 else:
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236 newheads = set()
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237
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238 try:
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239 cmdutil.findcmd('rebase', commands.table)
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240 haverebase = True
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241 except (error.AmbiguousCommand, error.UnknownCommand):
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242 haverebase = False
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243
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244 # TODO use templating.
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245 # TODO consider using graphmod. But it may not be necessary given
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246 # our simplicity and the customizations required.
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247 # TODO use proper graph symbols from graphmod
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248
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249 shortesttmpl = formatter.maketemplater(ui, '{shortest(node, 5)}')
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250 def shortest(ctx):
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251 return shortesttmpl.render({'ctx': ctx, 'node': ctx.hex()})
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252
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253 # We write out new heads to aid in DAG awareness and to help with decision
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254 # making on how the stack should be reconciled with commits made since the
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255 # branch point.
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256 if newheads:
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257 # Calculate distance from base so we can render the count and so we can
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258 # sort display order by commit distance.
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259 revdistance = {}
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260 for head in newheads:
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261 # There is some redundancy in DAG traversal here and therefore
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262 # room to optimize.
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263 ancestors = cl.ancestors([head], stoprev=basectx.rev())
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264 revdistance[head] = len(list(ancestors))
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265
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266 sourcectx = repo[stackrevs[-1]]
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267
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268 sortedheads = sorted(newheads, key=lambda x: revdistance[x],
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269 reverse=True)
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270
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271 for i, rev in enumerate(sortedheads):
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272 ctx = repo[rev]
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273
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274 if i:
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275 ui.write(': ')
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276 else:
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277 ui.write(' ')
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278
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279 ui.write(('o '))
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280 displayer.show(ctx)
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281 displayer.flush(ctx)
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282 ui.write('\n')
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283
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284 if i:
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285 ui.write(':/')
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286 else:
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287 ui.write(' /')
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288
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289 ui.write(' (')
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290 ui.write(_('%d commits ahead') % revdistance[rev],
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291 label='stack.commitdistance')
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292
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293 if haverebase:
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294 # TODO may be able to omit --source in some scenarios
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295 ui.write('; ')
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296 ui.write(('hg rebase --source %s --dest %s' % (
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297 shortest(sourcectx), shortest(ctx))),
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298 label='stack.rebasehint')
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299
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300 ui.write(')\n')
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301
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302 ui.write(':\n: ')
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303 ui.write(_('(stack head)\n'), label='stack.label')
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304
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305 if branchpointattip:
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diff changeset
306 ui.write(' \\ / ')
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307 ui.write(_('(multiple children)\n'), label='stack.label')
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diff changeset
308 ui.write(' |\n')
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diff changeset
309
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310 for rev in stackrevs:
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diff changeset
311 ctx = repo[rev]
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diff changeset
312 symbol = '@' if rev == wdirctx.rev() else 'o'
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313
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diff changeset
314 if newheads:
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315 ui.write(': ')
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316 else:
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317 ui.write(' ')
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318
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319 ui.write(symbol, ' ')
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320 displayer.show(ctx)
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321 displayer.flush(ctx)
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322 ui.write('\n')
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323
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324 # TODO display histedit hint?
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325
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326 if basectx:
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327 # Vertically and horizontally separate stack base from parent
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328 # to reinforce stack boundary.
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329 if newheads:
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330 ui.write(':/ ')
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331 else:
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332 ui.write(' / ')
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diff changeset
333
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334 ui.write(_('(stack base)'), '\n', label='stack.label')
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335 ui.write(('o '))
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diff changeset
336
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337 displayer.show(basectx)
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338 displayer.flush(basectx)
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339 ui.write('\n')
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340
31944
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341 @revsetpredicate('_underway([commitage[, headage]])')
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342 def underwayrevset(repo, subset, x):
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343 args = revset.getargsdict(x, 'underway', 'commitage headage')
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344 if 'commitage' not in args:
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345 args['commitage'] = None
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346 if 'headage' not in args:
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347 args['headage'] = None
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348
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349 # We assume callers of this revset add a topographical sort on the
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350 # result. This means there is no benefit to making the revset lazy
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351 # since the topographical sort needs to consume all revs.
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352 #
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353 # With this in mind, we build up the set manually instead of constructing
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diff changeset
354 # a complex revset. This enables faster execution.
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355
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356 # Mutable changesets (non-public) are the most important changesets
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357 # to return. ``not public()`` will also pull in obsolete changesets if
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358 # there is a non-obsolete changeset with obsolete ancestors. This is
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359 # why we exclude obsolete changesets from this query.
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360 rs = 'not public() and not obsolete()'
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361 rsargs = []
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diff changeset
362 if args['commitage']:
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363 rs += ' and date(%s)'
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diff changeset
364 rsargs.append(revsetlang.getstring(args['commitage'],
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365 _('commitage requires a string')))
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diff changeset
366
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367 mutable = repo.revs(rs, *rsargs)
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368 relevant = revset.baseset(mutable)
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369
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370 # Add parents of mutable changesets to provide context.
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371 relevant += repo.revs('parents(%ld)', mutable)
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diff changeset
372
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373 # We also pull in (public) heads if they a) aren't closing a branch
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374 # b) are recent.
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375 rs = 'head() and not closed()'
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376 rsargs = []
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377 if args['headage']:
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diff changeset
378 rs += ' and date(%s)'
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379 rsargs.append(revsetlang.getstring(args['headage'],
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380 _('headage requires a string')))
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diff changeset
381
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diff changeset
382 relevant += repo.revs(rs, *rsargs)
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diff changeset
383
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diff changeset
384 # Add working directory parent.
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385 wdirrev = repo['.'].rev()
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diff changeset
386 if wdirrev != nullrev:
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bd872f64a8ba cleanup: use set literals
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diff changeset
387 relevant += revset.baseset({wdirrev})
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diff changeset
388
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diff changeset
389 return subset & relevant
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diff changeset
390
33046
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diff changeset
391 @showview('work', csettopic='work')
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392 def showwork(ui, repo, displayer):
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393 """changesets that aren't finished"""
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diff changeset
394 # TODO support date-based limiting when calling revset.
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diff changeset
395 revs = repo.revs('sort(_underway(), topo)')
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diff changeset
396
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diff changeset
397 revdag = graphmod.dagwalker(repo, revs)
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diff changeset
398
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diff changeset
399 ui.setconfig('experimental', 'graphshorten', True)
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diff changeset
400 cmdutil.displaygraph(ui, repo, revdag, displayer, graphmod.asciiedges)
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parents: 31943
diff changeset
401
33137
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diff changeset
402 def extsetup(ui):
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diff changeset
403 # Alias `hg <prefix><view>` to `hg show <view>`.
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diff changeset
404 for prefix in ui.configlist('commands', 'show.aliasprefix'):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
405 for view in showview._table:
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
406 name = '%s%s' % (prefix, view)
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
407
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diff changeset
408 choice, allcommands = cmdutil.findpossible(name, commands.table,
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
409 strict=True)
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
410
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
411 # This alias is already a command name. Don't set it.
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parents: 33046
diff changeset
412 if name in choice:
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
413 continue
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
414
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
415 # Same for aliases.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
416 if ui.config('alias', name):
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
417 continue
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
418
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diff changeset
419 ui.setconfig('alias', name, 'show %s' % view, source='show')
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diff changeset
420
31765
264baeef3588 show: new extension for displaying various repository data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
421 # Adjust the docstring of the show command so it shows all registered views.
264baeef3588 show: new extension for displaying various repository data
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parents:
diff changeset
422 # This is a bit hacky because it runs at the end of module load. When moved
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
423 # into core or when another extension wants to provide a view, we'll need
264baeef3588 show: new extension for displaying various repository data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
424 # to do this more robustly.
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
425 # TODO make this more robust.
31943
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diff changeset
426 def _updatedocstring():
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
427 longest = max(map(len, showview._table.keys()))
3e9f118cc834 show: fix formatting of multiple commands
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diff changeset
428 entries = []
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
429 for key in sorted(showview._table.keys()):
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
430 entries.append(pycompat.sysstr(' %s %s' % (
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
431 key.ljust(longest), showview._table[key]._origdoc)))
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
432
3e9f118cc834 show: fix formatting of multiple commands
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parents: 31859
diff changeset
433 cmdtable['show'][0].__doc__ = pycompat.sysstr('%s\n\n%s\n ') % (
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parents: 31859
diff changeset
434 cmdtable['show'][0].__doc__.rstrip(),
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
435 pycompat.sysstr('\n\n').join(entries))
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
436
3e9f118cc834 show: fix formatting of multiple commands
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diff changeset
437 _updatedocstring()