| /* |
| * Copyright (C) 1999-2000 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. |
| */ |
| |
| /* |
| * UCS-4-SWAPPED = UCS-4-INTERNAL with inverted endianness |
| */ |
| |
| static int |
| ucs4swapped_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) |
| { |
| /* This function assumes that 'unsigned int' has exactly 32 bits. */ |
| if (sizeof(unsigned int) != 4) abort(); |
| |
| if (n >= 4) { |
| unsigned int x = *(const unsigned int *)s; |
| x = (x >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | (x << 24); |
| *pwc = x; |
| return 4; |
| } |
| return RET_TOOFEW(0); |
| } |
| |
| static int |
| ucs4swapped_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) |
| { |
| /* This function assumes that 'unsigned int' has exactly 32 bits. */ |
| if (sizeof(unsigned int) != 4) abort(); |
| |
| if (n >= 4) { |
| unsigned int x = wc; |
| x = (x >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | (x << 24); |
| *(unsigned int *)r = x; |
| return 4; |
| } else |
| return RET_TOOSMALL; |
| } |