/*

    File: unicode.c

    Copyright (C) 2007 Christophe GRENIER <grenier@cgsecurity.org>
  
    This software is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
  
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
  
    You should have received a copy of the GNU General Public License along
    with this program; if not, write the Free Software Foundation, Inc., 51
    Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 */


#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "types.h"
#include "common.h"
#include "unicode.h"

unsigned int UCSle2str(char *to, const uint16_t *from, const unsigned int len)
{
  unsigned int i;
  /*@
    @ loop assigns i, to[0 .. i];
    @ loop variant len - i;
    @*/
  for (i = 0; i < len && le16(from[i])!=0; i++)
  {
    if (le16(from[i]) & 0xff00)
      to[i] = '?';
    else
      to[i] = (char) (le16(from[i]));
  }
  if(i < len)
    to[i] = '\0';
  return i;
}

unsigned int str2UCSle(uint16_t *to, const char *from, const unsigned int len)
{
  unsigned int i;
  /*@
    @ loop assigns i, to[0 .. i];
    @ loop variant len - i;
    @*/
  for (i = 0; (i < len) && from[i]; i++)
  {
    to[i] = le16(from[i]);
  }
  if(i < len)
    to[i] = '\0';
  return i;
}