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/*
* Copyright (C) 1999-2004, International Business Machines Corporation and others. All Rights Reserved.
* Copyright (C) 2006 George Staikos <staikos@kde.org>
* Copyright (C) 2006 Alexey Proskuryakov <ap@nypop.com>
* Copyright (C) 2007 Apple Computer, Inc. All rights reserved.
* Copyright (C) 2008 Jürg Billeter <j@bitron.ch>
* Copyright (C) 2008 Dominik Röttsches <dominik.roettsches@access-company.com>
*
* This 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.
*
* This 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 this 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.
*
*/
#ifndef UnicodeMacrosFromICU_h
#define UnicodeMacrosFromICU_h
// some defines from ICU
#define U_IS_BMP(c) ((UChar32)(c)<=0xffff)
#define U16_IS_LEAD(c) (((c)&0xfffffc00)==0xd800)
#define U16_IS_TRAIL(c) (((c)&0xfffffc00)==0xdc00)
#define U16_SURROGATE_OFFSET ((0xd800<<10UL)+0xdc00-0x10000)
#define U16_GET_SUPPLEMENTARY(lead, trail) \
(((UChar32)(lead)<<10UL)+(UChar32)(trail)-U16_SURROGATE_OFFSET)
#define U16_LEAD(supplementary) (UChar)(((supplementary)>>10)+0xd7c0)
#define U16_TRAIL(supplementary) (UChar)(((supplementary)&0x3ff)|0xdc00)
#define U16_LENGTH(c) ((uint32_t)(c) <= 0xffff ? 1 : 2)
#define U_IS_SUPPLEMENTARY(c) ((UChar32)((c)-0x10000)<=0xfffff)
#define U_IS_SURROGATE(c) (((c)&0xfffff800)==0xd800)
#define U16_IS_SINGLE(c) !U_IS_SURROGATE(c)
#define U16_IS_SURROGATE(c) U_IS_SURROGATE(c)
#define U16_IS_SURROGATE_LEAD(c) (((c)&0x400)==0)
#define U16_GET(s, start, i, length, c) { \
(c)=(s)[i]; \
if(U16_IS_SURROGATE(c)) { \
uint16_t __c2; \
if(U16_IS_SURROGATE_LEAD(c)) { \
if((i)+1<(length) && U16_IS_TRAIL(__c2=(s)[(i)+1])) { \
(c)=U16_GET_SUPPLEMENTARY((c), __c2); \
} \
} else { \
if((i)-1>=(start) && U16_IS_LEAD(__c2=(s)[(i)-1])) { \
(c)=U16_GET_SUPPLEMENTARY(__c2, (c)); \
} \
} \
} \
}
#define U16_PREV(s, start, i, c) { \
(c)=(s)[--(i)]; \
if(U16_IS_TRAIL(c)) { \
uint16_t __c2; \
if((i)>(start) && U16_IS_LEAD(__c2=(s)[(i)-1])) { \
--(i); \
(c)=U16_GET_SUPPLEMENTARY(__c2, (c)); \
} \
} \
}
#define U16_BACK_1(s, start, i) { \
if(U16_IS_TRAIL((s)[--(i)]) && (i)>(start) && U16_IS_LEAD((s)[(i)-1])) { \
--(i); \
} \
}
#define U16_NEXT(s, i, length, c) { \
(c)=(s)[(i)++]; \
if(U16_IS_LEAD(c)) { \
uint16_t __c2; \
if((i)<(length) && U16_IS_TRAIL(__c2=(s)[(i)])) { \
++(i); \
(c)=U16_GET_SUPPLEMENTARY((c), __c2); \
} \
} \
}
#define U16_FWD_1(s, i, length) { \
if(U16_IS_LEAD((s)[(i)++]) && (i)<(length) && U16_IS_TRAIL((s)[i])) { \
++(i); \
} \
}
#define U_MASK(x) ((uint32_t)1<<(x))
#endif
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