diff options
Diffstat (limited to 'MSVC/iconv/utf16be.h')
-rw-r--r-- | MSVC/iconv/utf16be.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/MSVC/iconv/utf16be.h b/MSVC/iconv/utf16be.h new file mode 100644 index 0000000..bb2c129 --- /dev/null +++ b/MSVC/iconv/utf16be.h @@ -0,0 +1,77 @@ +/* + * 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., 59 Temple Place - + * Suite 330, Boston, MA 02111-1307, USA. + */ + +/* + * UTF-16BE + */ + +/* Specification: RFC 2781 */ + +static int +utf16be_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) +{ + int count = 0; + if (n >= 2) { + ucs4_t wc = (s[0] << 8) + s[1]; + if (wc >= 0xd800 && wc < 0xdc00) { + if (n >= 4) { + ucs4_t wc2 = (s[2] << 8) + s[3]; + if (!(wc2 >= 0xdc00 && wc2 < 0xe000)) + return RET_ILSEQ; + *pwc = 0x10000 + ((wc - 0xd800) << 10) + (wc2 - 0xdc00); + return count+4; + } + } else if (wc >= 0xdc00 && wc < 0xe000) { + return RET_ILSEQ; + } else { + *pwc = wc; + return count+2; + } + } + return RET_TOOFEW(count); +} + +static int +utf16be_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) +{ + if (!(wc >= 0xd800 && wc < 0xe000)) { + if (wc < 0x10000) { + if (n >= 2) { + r[0] = (unsigned char) (wc >> 8); + r[1] = (unsigned char) wc; + return 2; + } else + return RET_TOOSMALL; + } + else if (wc < 0x110000) { + if (n >= 4) { + ucs4_t wc1 = 0xd800 + ((wc - 0x10000) >> 10); + ucs4_t wc2 = 0xdc00 + ((wc - 0x10000) & 0x3ff); + r[0] = (unsigned char) (wc1 >> 8); + r[1] = (unsigned char) wc1; + r[2] = (unsigned char) (wc2 >> 8); + r[3] = (unsigned char) wc2; + return 4; + } else + return RET_TOOSMALL; + } + } + return RET_ILUNI; +} |