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/*
* Copyright (c) 2015, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UNICODE_DEF_H
#define UNICODE_DEF_H
#include "ue2common.h"
#define MAX_UNICODE 0x10FFFF
#define INVALID_UNICODE 0xffffffff /* unicode could never go above 2^31 */
#define UTF_2CHAR_MIN (1U << 7)
#define UTF_3CHAR_MIN (1U << 11)
#define UTF_4CHAR_MIN (1U << 16)
#define UTF_CONT_SHIFT 6
#define UTF_CONT_BYTE_RANGE (1U << UTF_CONT_SHIFT)
#define UTF_CONT_BYTE_HEADER ((u8)0x80) /* 10xx xxxx */
#define UTF_TWO_BYTE_HEADER ((u8)0xc0) /* 110x xxxx */
#define UTF_THREE_BYTE_HEADER ((u8)0xe0) /* 1110 xxxx */
#define UTF_FOUR_BYTE_HEADER ((u8)0xf0) /* 1111 0xxx */
#define UTF_CONT_BYTE_VALUE_MASK 0x3f
#define UTF_CONT_MIN UTF_CONT_BYTE_HEADER
#define UTF_CONT_MAX (UTF_TWO_BYTE_HEADER - 1)
#define UTF_TWO_BYTE_MIN UTF_TWO_BYTE_HEADER
#define UTF_TWO_BYTE_MAX (UTF_THREE_BYTE_HEADER - 1)
#define UTF_THREE_BYTE_MIN UTF_THREE_BYTE_HEADER
#define UTF_THREE_BYTE_MAX (UTF_FOUR_BYTE_HEADER - 1)
#define UTF_FOUR_BYTE_MIN UTF_FOUR_BYTE_HEADER
#define UTF_FOUR_BYTE_MAX ((u8)0xf4)
#define UTF_CONT_CR CharReach(UTF_CONT_MIN, UTF_CONT_MAX)
#define UTF_ASCII_CR CharReach(0, 127)
#define UTF_START_CR CharReach(UTF_TWO_BYTE_MIN, UTF_FOUR_BYTE_MAX)
#define UTF_TWO_START_CR CharReach(UTF_TWO_BYTE_MIN, UTF_TWO_BYTE_MAX)
#define UTF_THREE_START_CR CharReach(UTF_THREE_BYTE_MIN, UTF_THREE_BYTE_MAX)
#define UTF_FOUR_START_CR CharReach(UTF_FOUR_BYTE_MIN, UTF_FOUR_BYTE_MAX)
#define UNICODE_SURROGATE_MIN 0xd800
#define UNICODE_SURROGATE_MAX 0xdfff
#ifdef __cplusplus
namespace ue2 {
typedef u32 unichar; /* represents a unicode code point */
static UNUSED
u8 makeContByte(u8 val) {
return UTF_CONT_BYTE_HEADER | (val & UTF_CONT_BYTE_VALUE_MASK);
}
} // namespace
#endif // __cplusplus
#endif
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