1 /* 2 * Copyright (C) 1999-2001 Free Software Foundation, Inc. 3 * This file is part of the GNU LIBICONV Library. 4 * 5 * The GNU LIBICONV Library is free software; you can redistribute it 6 * and/or modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either version 2 8 * of the License, or (at your option) any later version. 9 * 10 * The GNU LIBICONV Library is distributed in the hope that it will be 11 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public 16 * License along with the GNU LIBICONV Library; see the file COPYING.LIB. 17 * If not, write to the Free Software Foundation, Inc., 51 Franklin Street, 18 * Fifth Floor, Boston, MA 02110-1301, USA. 19 */ 20 21 /* 22 * UCS-2-INTERNAL = UCS-2 with machine dependent endianness and alignment 23 */ 24 25 static int 26 ucs2internal_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) 27 { 28 if (n >= 2) { 29 unsigned short x = *(const unsigned short *)s; 30 if (x >= 0xd800 && x < 0xe000) { 31 return RET_ILSEQ; 32 } else { 33 *pwc = x; 34 return 2; 35 } 36 } 37 return RET_TOOFEW(0); 38 } 39 40 static int 41 ucs2internal_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) 42 { 43 if (wc < 0x10000 && !(wc >= 0xd800 && wc < 0xe000)) { 44 if (n >= 2) { 45 *(unsigned short *)r = wc; 46 return 2; 47 } else 48 return RET_TOOSMALL; 49 } else 50 return RET_ILUNI; 51 } 52