forked from mia/Aegisub
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* UTF-32LE
|
|
*/
|
|
|
|
/* Specification: Unicode 3.1 Standard Annex #19 */
|
|
|
|
static int
|
|
utf32le_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
|
|
{
|
|
if (n >= 4) {
|
|
ucs4_t wc = s[0] + (s[1] << 8) + (s[2] << 16) + (s[3] << 24);
|
|
if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) {
|
|
*pwc = wc;
|
|
return 4;
|
|
} else
|
|
return RET_ILSEQ;
|
|
}
|
|
return RET_TOOFEW(0);
|
|
}
|
|
|
|
static int
|
|
utf32le_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
|
|
{
|
|
if (wc < 0x110000 && !(wc >= 0xd800 && wc < 0xe000)) {
|
|
if (n >= 4) {
|
|
r[0] = (unsigned char) wc;
|
|
r[1] = (unsigned char) (wc >> 8);
|
|
r[2] = (unsigned char) (wc >> 16);
|
|
r[3] = 0;
|
|
return 4;
|
|
} else
|
|
return RET_TOOSMALL;
|
|
}
|
|
return RET_ILUNI;
|
|
}
|