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# csutil/csunicode.h

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    00001 /*
    00002     Copyright (C) 2003 by Frank Richter
    00003
    00004     This library is free software; you can redistribute it and/or
    00005     modify it under the terms of the GNU Library General Public
    00006     License as published by the Free Software Foundation; either
    00007     version 2 of the License, or (at your option) any later version.
    00008
    00009     This library is distributed in the hope that it will be useful,
    00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012     Library General Public License for more details.
    00013
    00014     You should have received a copy of the GNU Library General Public
    00015     License along with this library; if not, write to the Free
    00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00017 */
    00018
    00019 #ifndef __CS_CSUNICODE_H__
    00020 #define __CS_CSUNICODE_H__
    00021
    00029 #include "cssysdef.h"
    00030
    00031 #if !defined(CS_WCHAR_T_SIZE)
    00032 #  error Unknown wchar_t size.
    00033 #elif (CS_WCHAR_T_SIZE != 1) && \
    00034       (CS_WCHAR_T_SIZE != 2) && \
    00035       (CS_WCHAR_T_SIZE != 4)
    00036 #  error Unsupported wchar_t size.
    00037 #endif
    00038
    00040 typedef uint8 utf8_char;
    00042 typedef uint16 utf16_char;
    00044 typedef uint32 utf32_char;
    00045
    00048
    00049 #define CS_UC_CHAR_REPLACER             0xFFFD
    00051 #define CS_UC_INVALID                   0xFFFF
    00053 #define CS_UC_BOM                       0xFFFE
    00055 #define CS_UC_LAST_CHAR                 0x10FFFF
    00056
    00058 #define CS_UC_IS_SURROGATE(C)           (((C) & 0xFFFFF800) == 0x0000D800)
    00060 #define CS_UC_IS_HIGH_SURROGATE(C)      (((C) & 0xFFFFFC00) == 0x0000DC00)
    00062 #define CS_UC_IS_LOW_SURROGATE(C)       (((C) & 0xFFFFFC00) == 0x0000D800)
    00063
    00065 #define CS_UC_IS_NONCHARACTER(C)        (((C) == CS_UC_INVALID) || \
    00066                                          ((C) == CS_UC_BOM) || \
    00067                                          (((C) >= 0xFDD0) && ((C) <= 0xFDEF)) \
    00068                                          || ((C) > CS_UC_LAST_CHAR))
    00069
    00071 #define CS_UC_CHAR_HIGH_SURROGATE_FIRST         0xD800
    00073 #define CS_UC_CHAR_HIGH_SURROGATE_LAST          0xDBFF
    00075 #define CS_UC_CHAR_LOW_SURROGATE_FIRST          0xDC00
    00077 #define CS_UC_CHAR_LOW_SURROGATE_LAST           0xDFFF
    00078
    00083 #endif