annotate hgext/show.py @ 35445:b86f52426396

help: deprecate ui.slash in favor of slashpath template filter (issue5572) > For some reason, I thought someone (Mads?) said we had basically given > up on ui.slash, and some commands didn't support it. (from https://bz.mercurial-scm.org/show_bug.cgi?id=5572#c1) So the ui.slash option doesn't always work and is somewhat confusing. Let's make it clearer we won't improve the situation.
author Yuya Nishihara <yuya@tcha.org>
date Sat, 21 Oct 2017 17:27:14 +0900
parents 317566f0c2e6
children f1c54d003327
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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
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55 revsetpredicate = registrar.revsetpredicate()
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56
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57 class showcmdfunc(registrar._funcregistrarbase):
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58 """Register a function to be invoked for an `hg show <thing>`."""
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59
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60 # Used by _formatdoc().
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61 _docformat = '%s -- %s'
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62
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63 def _extrasetup(self, name, func, fmtopic=None, csettopic=None):
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64 """Called with decorator arguments to register a show view.
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65
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66 ``name`` is the sub-command name.
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67
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68 ``func`` is the function being decorated.
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69
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70 ``fmtopic`` is the topic in the style that will be rendered for
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71 this view.
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72
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73 ``csettopic`` is the topic in the style to be used for a changeset
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74 printer.
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75
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76 If ``fmtopic`` is specified, the view function will receive a
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77 formatter instance. If ``csettopic`` is specified, the view
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78 function will receive a changeset printer.
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79 """
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80 func._fmtopic = fmtopic
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81 func._csettopic = csettopic
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82
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83 showview = showcmdfunc()
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84
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85 @command('show', [
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86 # TODO: Switch this template flag to use cmdutil.formatteropts if
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87 # 'hg show' becomes stable before --template/-T is stable. For now,
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88 # we are putting it here without the '(EXPERIMENTAL)' flag because it
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89 # is an important part of the 'hg show' user experience and the entire
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90 # 'hg show' experience is experimental.
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91 ('T', 'template', '', ('display with template'), _('TEMPLATE')),
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92 ], _('VIEW'))
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93 def show(ui, repo, view=None, template=None):
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94 """show various repository information
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95
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96 A requested view of repository data is displayed.
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97
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98 If no view is requested, the list of available views is shown and the
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99 command aborts.
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100
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101 .. note::
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102
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103 There are no backwards compatibility guarantees for the output of this
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104 command. Output may change in any future Mercurial release.
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105
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106 Consumers wanting stable command output should specify a template via
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107 ``-T/--template``.
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108
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109 List of available views:
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110 """
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111 if ui.plain() and not template:
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112 hint = _('invoke with -T/--template to control output format')
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113 raise error.Abort(_('must specify a template in plain mode'), hint=hint)
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114
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115 views = showview._table
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116
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117 if not view:
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118 ui.pager('show')
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119 # TODO consider using formatter here so available views can be
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120 # rendered to custom format.
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121 ui.write(_('available views:\n'))
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122 ui.write('\n')
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123
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124 for name, func in sorted(views.items()):
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125 ui.write(('%s\n') % func.__doc__)
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126
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127 ui.write('\n')
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128 raise error.Abort(_('no view requested'),
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129 hint=_('use "hg show VIEW" to choose a view'))
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130
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131 # TODO use same logic as dispatch to perform prefix matching.
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132 if view not in views:
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133 raise error.Abort(_('unknown view: %s') % view,
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134 hint=_('run "hg show" to see available views'))
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135
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136 template = template or 'show'
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137
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138 fn = views[view]
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139 ui.pager('show')
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140
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141 if fn._fmtopic:
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142 fmtopic = 'show%s' % fn._fmtopic
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143 with ui.formatter(fmtopic, {'template': template}) as fm:
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144 return fn(ui, repo, fm)
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145 elif fn._csettopic:
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146 ref = 'show%s' % fn._csettopic
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147 spec = formatter.lookuptemplate(ui, ref, template)
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148 displayer = cmdutil.changeset_templater(ui, repo, spec, buffered=True)
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149 return fn(ui, repo, displayer)
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150 else:
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151 return fn(ui, repo)
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152
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153 @showview('bookmarks', fmtopic='bookmarks')
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154 def showbookmarks(ui, repo, fm):
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155 """bookmarks and their associated changeset"""
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156 marks = repo._bookmarks
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157 if not len(marks):
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158 # This is a bit hacky. Ideally, templates would have a way to
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159 # specify an empty output, but we shouldn't corrupt JSON while
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160 # waiting for this functionality.
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161 if not isinstance(fm, formatter.jsonformatter):
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162 ui.write(_('(no bookmarks set)\n'))
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163 return
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164
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165 revs = [repo[node].rev() for node in marks.values()]
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166 active = repo._activebookmark
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167 longestname = max(len(b) for b in marks)
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168 nodelen = longestshortest(repo, revs)
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169
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170 for bm, node in sorted(marks.items()):
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171 fm.startitem()
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172 fm.context(ctx=repo[node])
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173 fm.write('bookmark', '%s', bm)
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174 fm.write('node', fm.hexfunc(node), fm.hexfunc(node))
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175 fm.data(active=bm == active,
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176 longestbookmarklen=longestname,
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177 nodelen=nodelen)
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178
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179 @showview('stack', csettopic='stack')
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180 def showstack(ui, repo, displayer):
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181 """current line of work"""
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182 wdirctx = repo['.']
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183 if wdirctx.rev() == nullrev:
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184 raise error.Abort(_('stack view only available when there is a '
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185 'working directory'))
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186
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187 if wdirctx.phase() == phases.public:
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188 ui.write(_('(empty stack; working directory parent is a published '
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189 'changeset)\n'))
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190 return
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191
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192 # TODO extract "find stack" into a function to facilitate
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193 # customization and reuse.
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194
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195 baserev = destutil.stackbase(ui, repo)
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196 basectx = None
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197
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198 if baserev is None:
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199 baserev = wdirctx.rev()
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200 stackrevs = {wdirctx.rev()}
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201 else:
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202 stackrevs = set(repo.revs('%d::.', baserev))
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203
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204 ctx = repo[baserev]
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205 if ctx.p1().rev() != nullrev:
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206 basectx = ctx.p1()
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207
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208 # And relevant descendants.
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209 branchpointattip = False
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210 cl = repo.changelog
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211
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212 for rev in cl.descendants([wdirctx.rev()]):
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213 ctx = repo[rev]
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214
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215 # Will only happen if . is public.
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216 if ctx.phase() == phases.public:
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217 break
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218
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219 stackrevs.add(ctx.rev())
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220
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221 # ctx.children() within a function iterating on descandants
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222 # potentially has severe performance concerns because revlog.children()
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223 # iterates over all revisions after ctx's node. However, the number of
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224 # draft changesets should be a reasonably small number. So even if
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225 # this is quadratic, the perf impact should be minimal.
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226 if len(ctx.children()) > 1:
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227 branchpointattip = True
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228 break
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229
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230 stackrevs = list(sorted(stackrevs, reverse=True))
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231
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232 # Find likely target heads for the current stack. These are likely
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233 # merge or rebase targets.
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234 if basectx:
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235 # TODO make this customizable?
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236 newheads = set(repo.revs('heads(%d::) - %ld - not public()',
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237 basectx.rev(), stackrevs))
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238 else:
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239 newheads = set()
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240
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241 allrevs = set(stackrevs) | newheads | set([baserev])
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242 nodelen = longestshortest(repo, allrevs)
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243
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244 try:
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245 cmdutil.findcmd('rebase', commands.table)
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246 haverebase = True
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247 except (error.AmbiguousCommand, error.UnknownCommand):
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248 haverebase = False
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249
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250 # TODO use templating.
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251 # TODO consider using graphmod. But it may not be necessary given
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252 # our simplicity and the customizations required.
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253 # TODO use proper graph symbols from graphmod
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254
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255 shortesttmpl = formatter.maketemplater(ui, '{shortest(node, %d)}' % nodelen)
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256 def shortest(ctx):
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257 return shortesttmpl.render({'ctx': ctx, 'node': ctx.hex()})
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258
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259 # We write out new heads to aid in DAG awareness and to help with decision
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260 # making on how the stack should be reconciled with commits made since the
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261 # branch point.
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262 if newheads:
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263 # Calculate distance from base so we can render the count and so we can
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264 # sort display order by commit distance.
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265 revdistance = {}
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266 for head in newheads:
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267 # There is some redundancy in DAG traversal here and therefore
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268 # room to optimize.
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269 ancestors = cl.ancestors([head], stoprev=basectx.rev())
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270 revdistance[head] = len(list(ancestors))
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271
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272 sourcectx = repo[stackrevs[-1]]
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273
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274 sortedheads = sorted(newheads, key=lambda x: revdistance[x],
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275 reverse=True)
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276
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277 for i, rev in enumerate(sortedheads):
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278 ctx = repo[rev]
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279
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280 if i:
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281 ui.write(': ')
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282 else:
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283 ui.write(' ')
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284
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285 ui.write(('o '))
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286 displayer.show(ctx, nodelen=nodelen)
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287 displayer.flush(ctx)
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288 ui.write('\n')
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289
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290 if i:
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291 ui.write(':/')
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292 else:
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293 ui.write(' /')
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294
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295 ui.write(' (')
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296 ui.write(_('%d commits ahead') % revdistance[rev],
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297 label='stack.commitdistance')
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298
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299 if haverebase:
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300 # TODO may be able to omit --source in some scenarios
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301 ui.write('; ')
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diff changeset
302 ui.write(('hg rebase --source %s --dest %s' % (
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diff changeset
303 shortest(sourcectx), shortest(ctx))),
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304 label='stack.rebasehint')
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305
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diff changeset
306 ui.write(')\n')
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diff changeset
307
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diff changeset
308 ui.write(':\n: ')
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diff changeset
309 ui.write(_('(stack head)\n'), label='stack.label')
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310
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311 if branchpointattip:
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312 ui.write(' \\ / ')
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313 ui.write(_('(multiple children)\n'), label='stack.label')
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314 ui.write(' |\n')
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315
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316 for rev in stackrevs:
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317 ctx = repo[rev]
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318 symbol = '@' if rev == wdirctx.rev() else 'o'
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319
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320 if newheads:
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321 ui.write(': ')
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322 else:
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323 ui.write(' ')
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324
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325 ui.write(symbol, ' ')
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326 displayer.show(ctx, nodelen=nodelen)
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diff changeset
327 displayer.flush(ctx)
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328 ui.write('\n')
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329
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330 # TODO display histedit hint?
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331
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diff changeset
332 if basectx:
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diff changeset
333 # Vertically and horizontally separate stack base from parent
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334 # to reinforce stack boundary.
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diff changeset
335 if newheads:
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336 ui.write(':/ ')
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337 else:
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diff changeset
338 ui.write(' / ')
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339
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diff changeset
340 ui.write(_('(stack base)'), '\n', label='stack.label')
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diff changeset
341 ui.write(('o '))
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diff changeset
342
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diff changeset
343 displayer.show(basectx, nodelen=nodelen)
33197
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diff changeset
344 displayer.flush(basectx)
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345 ui.write('\n')
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346
31944
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347 @revsetpredicate('_underway([commitage[, headage]])')
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348 def underwayrevset(repo, subset, x):
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349 args = revset.getargsdict(x, 'underway', 'commitage headage')
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350 if 'commitage' not in args:
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351 args['commitage'] = None
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352 if 'headage' not in args:
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353 args['headage'] = None
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354
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355 # We assume callers of this revset add a topographical sort on the
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356 # result. This means there is no benefit to making the revset lazy
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Gregory Szorc <gregory.szorc@gmail.com>
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357 # since the topographical sort needs to consume all revs.
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358 #
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359 # With this in mind, we build up the set manually instead of constructing
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diff changeset
360 # a complex revset. This enables faster execution.
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361
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diff changeset
362 # Mutable changesets (non-public) are the most important changesets
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363 # to return. ``not public()`` will also pull in obsolete changesets if
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diff changeset
364 # there is a non-obsolete changeset with obsolete ancestors. This is
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
365 # why we exclude obsolete changesets from this query.
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366 rs = 'not public() and not obsolete()'
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367 rsargs = []
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368 if args['commitage']:
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369 rs += ' and date(%s)'
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370 rsargs.append(revsetlang.getstring(args['commitage'],
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371 _('commitage requires a string')))
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diff changeset
372
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diff changeset
373 mutable = repo.revs(rs, *rsargs)
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374 relevant = revset.baseset(mutable)
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375
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diff changeset
376 # Add parents of mutable changesets to provide context.
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377 relevant += repo.revs('parents(%ld)', mutable)
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378
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379 # We also pull in (public) heads if they a) aren't closing a branch
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380 # b) are recent.
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381 rs = 'head() and not closed()'
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382 rsargs = []
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diff changeset
383 if args['headage']:
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diff changeset
384 rs += ' and date(%s)'
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diff changeset
385 rsargs.append(revsetlang.getstring(args['headage'],
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Gregory Szorc <gregory.szorc@gmail.com>
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386 _('headage requires a string')))
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diff changeset
387
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diff changeset
388 relevant += repo.revs(rs, *rsargs)
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diff changeset
389
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390 # Add working directory parent.
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diff changeset
391 wdirrev = repo['.'].rev()
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diff changeset
392 if wdirrev != nullrev:
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diff changeset
393 relevant += revset.baseset({wdirrev})
31944
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diff changeset
394
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diff changeset
395 return subset & relevant
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diff changeset
396
33046
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diff changeset
397 @showview('work', csettopic='work')
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diff changeset
398 def showwork(ui, repo, displayer):
31944
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diff changeset
399 """changesets that aren't finished"""
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diff changeset
400 # TODO support date-based limiting when calling revset.
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diff changeset
401 revs = repo.revs('sort(_underway(), topo)')
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diff changeset
402 nodelen = longestshortest(repo, revs)
31944
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diff changeset
403
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
404 revdag = graphmod.dagwalker(repo, revs)
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
405
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
406 ui.setconfig('experimental', 'graphshorten', True)
34190
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33211
diff changeset
407 cmdutil.displaygraph(ui, repo, revdag, displayer, graphmod.asciiedges,
34191
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diff changeset
408 props={'nodelen': nodelen})
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diff changeset
409
33137
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diff changeset
410 def extsetup(ui):
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
411 # Alias `hg <prefix><view>` to `hg show <view>`.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
412 for prefix in ui.configlist('commands', 'show.aliasprefix'):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
413 for view in showview._table:
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
414 name = '%s%s' % (prefix, view)
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
415
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
416 choice, allcommands = cmdutil.findpossible(name, commands.table,
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
417 strict=True)
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
418
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
419 # This alias is already a command name. Don't set it.
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
420 if name in choice:
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
421 continue
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
422
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
423 # Same for aliases.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
424 if ui.config('alias', name):
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
425 continue
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
426
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
427 ui.setconfig('alias', name, 'show %s' % view, source='show')
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
428
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Gregory Szorc <gregory.szorc@gmail.com>
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diff changeset
429 def longestshortest(repo, revs, minlen=4):
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diff changeset
430 """Return the length of the longest shortest node to identify revisions.
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diff changeset
431
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diff changeset
432 The result of this function can be used with the ``shortest()`` template
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433 function to ensure that a value is unique and unambiguous for a given
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434 set of nodes.
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435
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436 The number of revisions in the repo is taken into account to prevent
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437 a numeric node prefix from conflicting with an integer revision number.
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438 If we fail to do this, a value of e.g. ``10023`` could mean either
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439 revision 10023 or node ``10023abc...``.
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440 """
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441 tmpl = formatter.maketemplater(repo.ui, '{shortest(node, %d)}' % minlen)
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442 lens = [minlen]
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443 for rev in revs:
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444 ctx = repo[rev]
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445 shortest = tmpl.render({'ctx': ctx, 'node': ctx.hex()})
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parents: 34190
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446 lens.append(len(shortest))
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parents: 34190
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447
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448 return max(lens)
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parents: 34190
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449
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450 # Adjust the docstring of the show command so it shows all registered views.
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451 # This is a bit hacky because it runs at the end of module load. When moved
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452 # into core or when another extension wants to provide a view, we'll need
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453 # to do this more robustly.
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454 # TODO make this more robust.
31943
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455 def _updatedocstring():
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456 longest = max(map(len, showview._table.keys()))
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457 entries = []
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458 for key in sorted(showview._table.keys()):
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459 entries.append(pycompat.sysstr(' %s %s' % (
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460 key.ljust(longest), showview._table[key]._origdoc)))
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parents: 31859
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461
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parents: 31859
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462 cmdtable['show'][0].__doc__ = pycompat.sysstr('%s\n\n%s\n ') % (
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463 cmdtable['show'][0].__doc__.rstrip(),
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464 pycompat.sysstr('\n\n').join(entries))
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parents: 31859
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465
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466 _updatedocstring()