Extension to reorder mq patches

[Andrei Vermel]

Below is an extension to avoid using an editor for MQ patch reordering in
.hg/patches/series. It moves specified patches to the top of patch queue.
It's trivial but handy.

Usage:

X:\>hg qseries
1.diff
2.diff
3.diff
4.diff
5.diff

X:\>hg qup 2.diff 4.diff

X:\>hg qseries
2.diff
4.diff
1.diff
3.diff
5.diff


# qup.py - pull and merge remote changes
#
# Copyright 2008 Andrei Vermel <andrei.vermel at gmail.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.

from mercurial.i18n import _
from mercurial.node import *
from mercurial import commands, cmdutil, hg, node, util
import os

def qup(ui, repo, *patches, **opts):
    '''Move MW patches to top'''
    try:
        series = file(repo.path+'/patches/series', 'r+')
    except:
        raise util.Abort(_('patch queue not found'))

    q = repo.mq

    if not patches:
        raise util.Abort(_('qup requires at least one patch name'))
    if q.check_toppatch(repo):
        raise util.Abort(_('can\'t modify series when patches applied'))

    tofront={}
    toback=[]
    for line in series:
        if line.strip().startswith('#'):
            toback.append(line)
        else:
            spl = line.split('#')
            firstword=''
            if spl:
                firstword = spl[0].strip()
            if firstword in patches:
                tofront[firstword]=line
            else:
                toback.append(line)

    if not tofront:
        raise util.Abort(_('none of specified patches found in the series'))
    series.seek(0)
    series.truncate()
    for patch in patches:
        try:
            series.write(tofront[patch].rstrip('\n')+'\n')
        except:
            print ('patch %s not in the series' % patch)
    series.writelines(toback)

cmdtable = {
    'qup':
        (qup, [],
        _('hg qup PATCH...')),
}
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