#!/usr/bin/env python
# encoding: utf-8
#
# Copyright (c) 2010 Doug Hellmann.  All rights reserved.
#
"""Create a file with nonnative BOM.
"""
#end_pymotw_header

import codecs
from codecs_to_hex import to_hex

# Pick the nonnative version of UTF-16 encoding
if codecs.BOM_UTF16 == codecs.BOM_UTF16_BE:
    bom = codecs.BOM_UTF16_LE
    encoding = 'utf_16_le'
else:
    bom = codecs.BOM_UTF16_BE
    encoding = 'utf_16_be'

print 'Native order  :', to_hex(codecs.BOM_UTF16, 2)
print 'Selected order:', to_hex(bom, 2)

# Encode the text.
encoded_text = u'pi: \u03c0'.encode(encoding)
print '{:14}: {}'.format(encoding, to_hex(encoded_text, 2))

with open('nonnative-encoded.txt', mode='wb') as f:
    # Write the selected byte-order marker.  It is not included
    # in the encoded text because the byte order was given
    # explicitly when selecting the encoding.
    f.write(bom)
    # Write the byte string for the encoded text.
    f.write(encoded_text)