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139 lines
4.5 KiB
Python
139 lines
4.5 KiB
Python
# show.py - Extension implementing `hg show`
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#
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# Copyright 2017 Gregory Szorc <gregory.szorc@gmail.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""unified command to show various repository information (EXPERIMENTAL)
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This extension provides the :hg:`show` command, which provides a central
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command for displaying commonly-accessed repository data and views of that
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data.
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"""
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from __future__ import absolute_import
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from mercurial.i18n import _
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from mercurial import (
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cmdutil,
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commands,
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error,
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pycompat,
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registrar,
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)
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# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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# be specifying the version(s) of Mercurial they are tested with, or
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# leave the attribute unspecified.
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testedwith = 'ships-with-hg-core'
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cmdtable = {}
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command = cmdutil.command(cmdtable)
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class showcmdfunc(registrar._funcregistrarbase):
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"""Register a function to be invoked for an `hg show <thing>`."""
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# Used by _formatdoc().
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_docformat = '%s -- %s'
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def _extrasetup(self, name, func, fmtopic=None):
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"""Called with decorator arguments to register a show view.
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``name`` is the sub-command name.
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``func`` is the function being decorated.
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``fmtopic`` is the topic in the style that will be rendered for
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this view.
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"""
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func._fmtopic = fmtopic
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showview = showcmdfunc()
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@command('show', commands.formatteropts, _('VIEW'))
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def show(ui, repo, view=None, template=None):
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"""show various repository information
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A requested view of repository data is displayed.
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If no view is requested, the list of available views is shown and the
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command aborts.
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.. note::
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There are no backwards compatibility guarantees for the output of this
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command. Output may change in any future Mercurial release.
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Consumers wanting stable command output should specify a template via
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``-T/--template``.
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List of available views:
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"""
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if ui.plain() and not template:
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raise error.Abort(_('"hg show" cannot be used in plain mode because '
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'output is not stable'),
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hint=_('unset HGPLAIN and invoke with -T/--template '
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'to control output'))
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views = showview._table
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if not view:
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ui.pager('show')
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# TODO consider using formatter here so available views can be
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# rendered to custom format.
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ui.write(_('available views:\n'))
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ui.write('\n')
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for name, func in sorted(views.items()):
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ui.write(('%s\n') % func.__doc__)
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ui.write('\n')
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raise error.Abort(_('no view requested'),
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hint=_('use "hg show VIEW" to choose a view'))
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# TODO use same logic as dispatch to perform prefix matching.
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if view not in views:
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raise error.Abort(_('unknown view: %s') % view,
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hint=_('run "hg show" to see available views'))
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template = template or 'show'
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fmtopic = 'show%s' % views[view]._fmtopic
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ui.pager('show')
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with ui.formatter(fmtopic, {'template': template}) as fm:
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return views[view](ui, repo, fm)
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@showview('bookmarks', fmtopic='bookmarks')
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def showbookmarks(ui, repo, fm):
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"""bookmarks and their associated changeset"""
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marks = repo._bookmarks
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if not len(marks):
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# TODO json output is corrupted; consider using formatter
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ui.write(_('(no bookmarks set)\n'))
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return
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active = repo._activebookmark
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longestname = max(len(b) for b in marks)
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# TODO consider exposing longest shortest(node).
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for bm, node in sorted(marks.items()):
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fm.startitem()
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fm.context(ctx=repo[node])
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fm.write('bookmark', '%s', bm)
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fm.write('node', fm.hexfunc(node), fm.hexfunc(node))
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fm.data(active=bm == active,
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longestbookmarklen=longestname)
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# Adjust the docstring of the show command so it shows all registered views.
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# This is a bit hacky because it runs at the end of module load. When moved
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# into core or when another extension wants to provide a view, we'll need
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# to do this more robustly.
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# TODO make this more robust.
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longest = max(map(len, showview._table.keys()))
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for key in sorted(showview._table.keys()):
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cmdtable['show'][0].__doc__ += pycompat.sysstr(' %s %s\n' % (
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key.ljust(longest), showview._table[key]._origdoc))
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