#!/usr/bin/env python

import sys, os
import os.path as pos

use_gtk=False
use_qt = False

if '--gtk' in sys.argv:
    use_gtk = True
    sys.argv.remove('--gtk')
if '--qt' in sys.argv:
    use_qt = True
    sys.argv.remove('--qt')

if use_gtk and use_qt:
    print "Cannot use both gtk and Qt!"
    sys.exit(1)

if not (use_gtk or use_qt):
    if pos.isfile(pos.join(os.environ['HOME'], '.hgviewrc')):
        try:
            d = open(pos.join(os.environ['HOME'], '.hgviewrc')).readlines()
        except:
            print "Can't access to your .hgviewrc file! "
            print "Check permissions or specify your desired backend with '--gtk' or '--qt'"
            sys.exit(1)
        else:
            for l in d:
                if l.startswith('backend'):
                    backend = l.split('=')[1].strip()
                    use_gtk = 'gtk' in backend
                    use_qt = 'qt' in backend

    if not (use_gtk or use_qt): # still ...
        use_gtk = True


try:
    import hgview
    # print hgview.__file__
except ImportError:
    import stat
    exec_path = pos.abspath(__file__)
    # Resolve symbolic links
    statinfo = os.lstat(exec_path)
    if stat.S_ISLNK(statinfo.st_mode):
        exec_path = pos.abspath(pos.join(pos.dirname(exec_path),
                                os.readlink(exec_path)))
    py_path = pos.abspath(pos.join(pos.dirname(exec_path), ".."))
    #print "Inserting:", py_path
    sys.path.append(py_path)

if use_qt:
    from hgview.qt4 import hgview_qt4 as hgview
elif use_gtk:
    from hgview.gtk import hgview_gtk as hgview

hgview.main()