2016-03-22 20:45:57 +03:00
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# arcdiff.py - extension adding an option to the diff command to show changes
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# since the last arcanist diff
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#
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# Copyright 2016 Facebook, Inc.
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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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2017-01-20 11:24:45 +03:00
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import os
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2016-11-25 03:23:21 +03:00
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from mercurial import commands, error, extensions
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2016-03-22 20:45:57 +03:00
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from mercurial.i18n import _
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2016-04-27 19:50:13 +03:00
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from phabricator import (
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arcconfig,
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conduit,
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diffprops,
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)
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2016-04-27 19:27:56 +03:00
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2016-03-22 20:45:57 +03:00
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def extsetup(ui):
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entry = extensions.wrapcommand(commands.table, 'diff', _diff)
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options = entry[1]
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options.append(('', 'since-last-arc-diff', None,
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_('show changes since last `arc diff`')))
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2016-05-12 23:11:08 +03:00
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def _differentialhash(ui, repo, phabrev):
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client = conduit.Client()
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2016-03-22 20:45:57 +03:00
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try:
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2016-05-12 23:11:08 +03:00
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client.apply_arcconfig(arcconfig.load_for_path(repo.root))
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diffid = diffprops.getcurrentdiffidforrev(client, phabrev)
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if diffid is None:
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return None
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localcommits = diffprops.getlocalcommitfordiffid(client, diffid)
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return localcommits.get('commit', None) if localcommits else None
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2016-04-27 19:27:56 +03:00
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except conduit.ClientError as e:
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ui.warn(_('Error calling conduit: %s\n') % str(e))
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2016-03-22 20:45:57 +03:00
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return None
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2016-04-27 19:27:56 +03:00
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except arcconfig.ArcConfigError as e:
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raise error.Abort(str(e))
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2016-03-22 20:45:57 +03:00
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def _diff(orig, ui, repo, *pats, **opts):
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if not opts.get('since_last_arc_diff'):
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return orig(ui, repo, *pats, **opts)
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ctx = repo['.']
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2016-04-27 19:50:13 +03:00
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phabrev = diffprops.parserevfromcommitmsg(ctx.description())
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2016-03-22 20:45:57 +03:00
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2016-04-27 19:50:13 +03:00
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if phabrev is None:
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2016-09-21 17:45:25 +03:00
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mess = _('local changeset is not associated with a differential '
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'revision')
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2016-03-22 20:45:57 +03:00
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raise error.Abort(mess)
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2016-05-12 23:11:08 +03:00
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rev = _differentialhash(ui, repo, phabrev)
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2016-03-22 20:45:57 +03:00
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if rev is None:
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2016-09-21 17:45:25 +03:00
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mess = _('unable to determine previous changeset hash')
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2016-03-22 20:45:57 +03:00
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raise error.Abort(mess)
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rev = str(rev)
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opts['rev'] = [rev]
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# if patterns aren't provided, restrict diff to files in both changesets
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# this prevents performing a diff on rebased changes
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if len(pats) == 0:
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prev = set(repo.unfiltered()[rev].files())
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curr = set(repo['.'].files())
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2017-01-20 11:24:45 +03:00
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pats = tuple(os.path.join(repo.root, p) for p in prev | curr)
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2016-03-22 20:45:57 +03:00
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return orig(ui, repo, *pats, **opts)
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