# To fix or bypass Bug1701389
# ( http://sourceforge.net/tracker/index.php?func=detail&aid=1701389&group_id=5470&atid=105470 )
# @author Iceberg@21cn.com

import __builtin__, codecs

__all__ = ["open"]

def open(filename, mode='rb', encoding=None, errors='strict', buffering=1):
  # @note utf32 is not yet tested
  #print 'before:', mode, encoding
  if encoding in ('utf16', 'utf_16', 'U16') and 'a' in mode:
    try:
      bom = __builtin__.open( filename, 'rb' ).read(2)
      if bom == '\xff\xfe': encoding = 'utf-16-le'
      elif bom == '\xfe\xff': encoding = 'utf-16-be'
      else: pass  # no bom, no magic
    except IOError: pass  # The file does not exist yet. No magic is needed.
  #print 'after:', mode, encoding
  return codecs.open( filename, mode, encoding, errors, buffering )