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52 lines
1.7 KiB
52 lines
1.7 KiB
/* |
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* Copyright (C) 1999-2000, 2016 Free Software Foundation, Inc. |
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* This file is part of the GNU LIBICONV Library. |
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* |
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* The GNU LIBICONV Library is free software; you can redistribute it |
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* and/or modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* The GNU LIBICONV Library is distributed in the hope that it will be |
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with the GNU LIBICONV Library; see the file COPYING.LIB. |
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* If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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/* |
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* UCS-4-SWAPPED = UCS-4-INTERNAL with inverted endianness |
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*/ |
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static int |
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ucs4swapped_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n) |
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{ |
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/* This function assumes that 'unsigned int' has exactly 32 bits. */ |
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if (sizeof(unsigned int) != 4) abort(); |
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if (n >= 4) { |
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unsigned int x = *(const unsigned int *)s; |
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x = (x >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | (x << 24); |
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*pwc = x; |
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return 4; |
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} |
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return RET_TOOFEW(0); |
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} |
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static int |
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ucs4swapped_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n) |
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{ |
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/* This function assumes that 'unsigned int' has exactly 32 bits. */ |
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if (sizeof(unsigned int) != 4) abort(); |
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if (n >= 4) { |
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unsigned int x = wc; |
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x = (x >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | (x << 24); |
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*(unsigned int *)r = x; |
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return 4; |
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} else |
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return RET_TOOSMALL; |
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}
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