/* 
 * Conversion table for ISO8859-1 charset 
 * 
 * This program 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 to the Free Software 
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
 */
#include "includes.h"

static size_t latin1_pull(void *cd, char **inbuf, size_t *inbytesleft,
			 char **outbuf, size_t *outbytesleft)
{
  while (*inbytesleft >= 1 && *outbytesleft >= 2) {
    *(uint16*)(*outbuf) = **inbuf;
    (*inbytesleft)  -= 1;
    (*outbytesleft) -= 2;
    (*inbuf)  += 1;
    (*outbuf) += 2;
  }

  if (*inbytesleft > 0) {
    errno = E2BIG;
    return -1;
  }
  
  return 0;
}

static size_t latin1_push(void *cd, char **inbuf, size_t *inbytesleft,
			 char **outbuf, size_t *outbytesleft)
{
  while (*inbytesleft >= 2 && *outbytesleft >= 1) {
    int i;
    int done=0;
    uint16 ch = SVAL(*inbuf,0);
    (*outbuf)[0] = ch;
    (*inbytesleft) -= 2;
    (*outbytesleft) -= 1;
    (*inbuf)  += 2;
    (*outbuf) += 1;
  }
  
  if (*inbytesleft == 1) {
    errno = EINVAL;
    return -1;
  }

  if (*inbytesleft > 1) {
    errno = E2BIG;
    return -1;
  }
  
  return 0;
}

struct charset_functions latin1_functions = {"ISO8859-1", latin1_pull, latin1_push};

NTSTATUS charset_latin1_init(void)
{
	return smb_register_charset(&latin1_functions);
}