diff options
author | Pixel <pixel@nobis-crew.org> | 2011-10-11 16:45:31 -0700 |
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committer | Pixel <pixel@nobis-crew.org> | 2011-10-11 16:45:31 -0700 |
commit | ead67afc96cdff3e74bb616e8e3a8b0a7695a28a (patch) | |
tree | 4d074d11a7983bdbde3f6da7d311cddd9696ef0d /win32/iconv/utf16.h | |
parent | d2252afcd74af0248c6141c8086d03e12a0a316f (diff) |
Making the project compile with mingw32, on the same Makefile. No more separate Makefiles insanity.
Diffstat (limited to 'win32/iconv/utf16.h')
-rw-r--r-- | win32/iconv/utf16.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/win32/iconv/utf16.h b/win32/iconv/utf16.h new file mode 100644 index 0000000..55447d7 --- /dev/null +++ b/win32/iconv/utf16.h @@ -0,0 +1,109 @@ +/* + * 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-16 + */ + +/* Specification: RFC 2781 */ + +/* Here we accept FFFE/FEFF marks as endianness indicators everywhere + in the stream, not just at the beginning. (This is contrary to what + RFC 2781 section 3.2 specifies, but it allows concatenation of byte + sequences to work flawlessly, while disagreeing with the RFC behaviour + only for strings containing U+FEFF characters, which is quite rare.) + The default is big-endian. */ +/* The state is 0 if big-endian, 1 if little-endian. */ +static int +utf16_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) +{ + state_t state = conv->istate; + int count = 0; + for (; n >= 2;) { + ucs4_t wc = (state ? s[0] + (s[1] << 8) : (s[0] << 8) + s[1]); + if (wc == 0xfeff) { + } else if (wc == 0xfffe) { + state ^= 1; + } else if (wc >= 0xd800 && wc < 0xdc00) { + if (n >= 4) { + ucs4_t wc2 = (state ? s[2] + (s[3] << 8) : (s[2] << 8) + s[3]); + if (!(wc2 >= 0xdc00 && wc2 < 0xe000)) + return RET_ILSEQ; + *pwc = 0x10000 + ((wc - 0xd800) << 10) + (wc2 - 0xdc00); + conv->istate = state; + return count+4; + } else + break; + } else if (wc >= 0xdc00 && wc < 0xe000) { + return RET_ILSEQ; + } else { + *pwc = wc; + conv->istate = state; + return count+2; + } + s += 2; n -= 2; count += 2; + } + conv->istate = state; + return RET_TOOFEW(count); +} + +/* We output UTF-16 in big-endian order, with byte-order mark. + See RFC 2781 section 3.3 for a rationale: Some document formats + mandate a BOM; the file concatenation issue is not so severe as + long as the above utf16_mbtowc function is used. */ +/* The state is 0 at the beginning, 1 after the BOM has been written. */ +static int +utf16_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) +{ + if (wc != 0xfffe && !(wc >= 0xd800 && wc < 0xe000)) { + int count = 0; + if (!conv->ostate) { + if (n >= 2) { + r[0] = 0xFE; + r[1] = 0xFF; + r += 2; n -= 2; count += 2; + } else + return RET_TOOSMALL; + } + if (wc < 0x10000) { + if (n >= 2) { + r[0] = (unsigned char) (wc >> 8); + r[1] = (unsigned char) wc; + conv->ostate = 1; + return count+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; + conv->ostate = 1; + return count+4; + } else + return RET_TOOSMALL; + } + } + return RET_ILUNI; +} |