view hg @ 27082:4898e442f392

histedit: make verification configurable

Before we can add a 'base' action to histedit need to change verification
so that action can specify which steps of verification should run for it.

Also it's everything we need for the exec and stop actions implementation.

I thought about baking verification into each histedit action (so each
of them is responsible for verifying its constraints) but it felt wrong
because:
 - every action would need to know its context (eg. the list of all other
   actions)
 - a lot of duplicated work will be added - each action will iterate through
   all others
 - the steps of the verification would need to be extracted and named anyway
   in order to be reused

The verifyrules function grows too big now. I plan to refator it in one of
the next series.

#!/usr/bin/env python
#
# mercurial - scalable distributed SCM
#
# Copyright 2005-2007 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

import os
import sys

if os.environ.get('HGUNICODEPEDANTRY', False):
    reload(sys)
    sys.setdefaultencoding("undefined")


libdir = '@LIBDIR@'

if libdir != '@' 'LIBDIR' '@':
    if not os.path.isabs(libdir):
        libdir = os.path.join(os.path.dirname(os.path.realpath(__file__)),
                              libdir)
        libdir = os.path.abspath(libdir)
    sys.path.insert(0, libdir)

# enable importing on demand to reduce startup time
try:
    from mercurial import demandimport; demandimport.enable()
except ImportError:
    import sys
    sys.stderr.write("abort: couldn't find mercurial libraries in [%s]\n" %
                     ' '.join(sys.path))
    sys.stderr.write("(check your install and PYTHONPATH)\n")
    sys.exit(-1)

import mercurial.util
import mercurial.dispatch

for fp in (sys.stdin, sys.stdout, sys.stderr):
    mercurial.util.setbinary(fp)

mercurial.dispatch.run()