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/* 
 * Copyright (C) 1999-2001 Free Software Foundation, Inc. 
 * This file is part of the GNU LIBICONV Library. 
 * 
 * The GNU LIBICONV Library is free software; you can redistribute it 
 * and/or modify it under the terms of the GNU Library General Public 
 * License as published by the Free Software Foundation; either version 2 
 * of the License, or (at your option) any later version. 
 * 
 * The GNU LIBICONV Library 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 
 * Library General Public License for more details. 
 * 
 * You should have received a copy of the GNU Library General Public 
 * License along with the GNU LIBICONV Library; see the file COPYING.LIB. 
 * If not, write to the Free Software Foundation, Inc., 51 Franklin Street, 
 * Fifth Floor, Boston, MA 02110-1301, USA. 
 */ 
 
/* 
 * ISO646-JP 
 * also known as JIS_C6220-1969-RO 
 */ 
 
/* This is the lower half of JIS_X0201. */ 
 
static int 
iso646_jp_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) 
{ 
  unsigned char c = *s; 
  if (c < 0x80) { 
    if (c == 0x5c) 
      *pwc = (ucs4_t) 0x00a5; 
    else if (c == 0x7e) 
      *pwc = (ucs4_t) 0x203e; 
    else 
      *pwc = (ucs4_t) c; 
    return 1; 
  } 
  return RET_ILSEQ; 
} 
 
static int 
iso646_jp_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) 
{ 
  if (wc < 0x0080 && !(wc == 0x005c || wc == 0x007e)) { 
    *r = wc; 
    return 1; 
  } 
  if (wc == 0x00a5) { 
    *r = 0x5c; 
    return 1; 
  } 
  if (wc == 0x203e) { 
    *r = 0x7e; 
    return 1; 
  } 
  return RET_ILUNI; 
}