utf.h File Reference

#include <stdint.h>

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Macros
#define	UTF8_1BYTE_CODEMAX   0x7F
#define	UTF8_2BYTE_CODEMAX   0x7FF
#define	UTF8_3BYTE_CODEMAX   0xFFFF
#define	UTF8_4BYTE_CODEMAX   0x10FFFF
#define	UTF8_1BYTE_MASK   0x80
#define	UTF8_2BYTE_MASK   0xE0
#define	UTF8_3BYTE_MASK   0xF0
#define	UTF8_4BYTE_MASK   0xF8
#define	UTF8_EXTBYTE_MASK   0xC0
#define	UTF8_1BYTE_PREFIX   0x00
#define	UTF8_2BYTE_PREFIX   0xC0
#define	UTF8_3BYTE_PREFIX   0xE0
#define	UTF8_4BYTE_PREFIX   0xF0
#define	UTF8_EXTBYTE_PREFIX   0x80
#define	UTF8_IS_1BYTE(ptr)    ((ptr[0] & UTF8_1BYTE_MASK) == UTF8_1BYTE_PREFIX)
#define	UTF8_IS_2BYTE(ptr)
#define	UTF8_IS_3BYTE(ptr)
#define	UTF8_IS_4BYTE(ptr)
#define	UTF8_ACCEPT   0
#define	UTF8_REJECT   1

Detailed Description

BSD 2-Clause License

Copyright (c) 2022-2023, Manas Kamal Choudhury All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. 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.

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 HOLDER 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.

Macro Definition Documentation

UTF8_1BYTE_CODEMAX

#define UTF8_1BYTE_CODEMAX   0x7F

UTF8_1BYTE_MASK

#define UTF8_1BYTE_MASK   0x80

UTF8_1BYTE_PREFIX

#define UTF8_1BYTE_PREFIX   0x00

UTF8_2BYTE_CODEMAX

#define UTF8_2BYTE_CODEMAX   0x7FF

UTF8_2BYTE_MASK

#define UTF8_2BYTE_MASK   0xE0

UTF8_2BYTE_PREFIX

#define UTF8_2BYTE_PREFIX   0xC0

UTF8_3BYTE_CODEMAX

#define UTF8_3BYTE_CODEMAX   0xFFFF

UTF8_3BYTE_MASK

#define UTF8_3BYTE_MASK   0xF0

UTF8_3BYTE_PREFIX

#define UTF8_3BYTE_PREFIX   0xE0

UTF8_4BYTE_CODEMAX

#define UTF8_4BYTE_CODEMAX   0x10FFFF

UTF8_4BYTE_MASK

#define UTF8_4BYTE_MASK   0xF8

UTF8_4BYTE_PREFIX

#define UTF8_4BYTE_PREFIX   0xF0

UTF8_ACCEPT

#define UTF8_ACCEPT   0

UTF8_EXTBYTE_MASK

#define UTF8_EXTBYTE_MASK   0xC0

UTF8_EXTBYTE_PREFIX

#define UTF8_EXTBYTE_PREFIX   0x80

UTF8_IS_1BYTE

#define UTF8_IS_1BYTE

(

ptr

)

((ptr[0] & UTF8_1BYTE_MASK) == UTF8_1BYTE_PREFIX)

UTF8_IS_2BYTE

#define UTF8_IS_2BYTE

(

ptr

)

Value:

    (((ptr[0] & UTF8_2BYTE_MASK) == UTF8_2BYTE_PREFIX) && \
    ((ptr[1] & UTF8_EXTBYTE_MASK) == UTF8_EXTBYTE_PREFIX))

UTF8_IS_3BYTE

#define UTF8_IS_3BYTE

(

ptr

)

Value:

    (((ptr[0] & UTF8_3BYTE_MASK) == UTF8_3BYTE_PREFIX) && \
    (((ptr[1] | ptr[2]) & UTF8_EXTBYTE_MASK) == UTF8_EXTBYTE_PREFIX))

UTF8_IS_4BYTE

#define UTF8_IS_4BYTE

(

ptr

)

Value:

    (((ptr[0] & UTF8_4BYTE_MASK) == UTF8_4BYTE_PREFIX) && \
    (((ptr[1] | ptr[2] | ptr[3]) & UTF8_EXTBYTE_MASK) == UTF8_EXTBYTE_PREFIX))

UTF8_REJECT

#define UTF8_REJECT   1