hgext/graphlog.py
author Durham Goode <durham@fb.com>
Thu, 10 Nov 2016 02:19:16 -0800
changeset 30361 1070df141718
parent 29841 d5883fd055c6
child 32337 46ba2cdda476
permissions -rw-r--r--
dirstate: change added/modified placeholder hash length to 20 bytes Previously the added/modified placeholder hash for manifests generated from the dirstate was a 21byte long string consisting of the p1 file hash plus a single character to indicate an add or a modify. Normal hashes are only 20 bytes long. This makes it complicated to implement more efficient manifest implementations which rely on the hashes being fixed length. Let's change this hash to just be 20 bytes long, and rely on the astronomical improbability of an actual hash being these 20 bytes (just like we rely on no hash every being the nullid). This changes the possible behavior slightly in that the hash for all added/modified entries in the dirstate manifest will now be the same (so simple node comparisons would say they are equal), but we should never be doing simple node comparisons on these nodes even with the old hashes, because they did not accurately represent the content (i.e. two files based off the same p1 file node, with different working copy contents would have the same hash (even with the appended character) in the old scheme too, so we couldn't depend on the hashes period).
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# ASCII graph log extension for Mercurial
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#
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# Copyright 2007 Joel Rosdahl <joel@rosdahl.net>
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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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'''command to view revision graphs from a shell (DEPRECATED)
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The functionality of this extension has been include in core Mercurial
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since version 2.3. Please use :hg:`log -G ...` instead.
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This extension adds a --graph option to the incoming, outgoing and log
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commands. When this options is given, an ASCII representation of the
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revision graph is also shown.
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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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)
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cmdtable = {}
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command = cmdutil.command(cmdtable)
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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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@command('glog',
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    [('f', 'follow', None,
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     _('follow changeset history, or file history across copies and renames')),
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    ('', 'follow-first', None,
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     _('only follow the first parent of merge changesets (DEPRECATED)')),
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    ('d', 'date', '', _('show revisions matching date spec'), _('DATE')),
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    ('C', 'copies', None, _('show copied files')),
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    ('k', 'keyword', [],
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     _('do case-insensitive search for a given text'), _('TEXT')),
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    ('r', 'rev', [], _('show the specified revision or revset'), _('REV')),
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    ('', 'removed', None, _('include revisions where files were removed')),
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    ('m', 'only-merges', None, _('show only merges (DEPRECATED)')),
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    ('u', 'user', [], _('revisions committed by user'), _('USER')),
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    ('', 'only-branch', [],
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     _('show only changesets within the given named branch (DEPRECATED)'),
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     _('BRANCH')),
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    ('b', 'branch', [],
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     _('show changesets within the given named branch'), _('BRANCH')),
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    ('P', 'prune', [],
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     _('do not display revision or any of its ancestors'), _('REV')),
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    ] + commands.logopts + commands.walkopts,
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    _('[OPTION]... [FILE]'),
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    inferrepo=True)
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def glog(ui, repo, *pats, **opts):
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    """show revision history alongside an ASCII revision graph
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    Print a revision history alongside a revision graph drawn with
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    ASCII characters.
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    Nodes printed as an @ character are parents of the working
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    directory.
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    This is an alias to :hg:`log -G`.
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    """
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    opts['graph'] = True
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    return commands.log(ui, repo, *pats, **opts)