utf8.c

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/*
 * This file is part of LibParserUtils.
 * Licensed under the MIT License,
 *                http://www.opensource.org/licenses/mit-license.php
 * Copyright 2007 John-Mark Bell <jmb@netsurf-browser.org>
 */

#include <stdbool.h>
#include <stdlib.h>
#include <string.h>

#include <parserutils/charset/utf8.h>
#include "charset/encodings/utf8impl.h"

const uint8_t numContinuations[256] = {
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
        3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5,
};

parserutils_error parserutils_charset_utf8_to_ucs4(const uint8_t *s, size_t len,
                uint32_t *ucs4, size_t *clen)
{
        parserutils_error error;

        UTF8_TO_UCS4(s, len, ucs4, clen, error);

        return error;
}

parserutils_error parserutils_charset_utf8_from_ucs4(uint32_t ucs4, 
                uint8_t **s, size_t *len)
{
        parserutils_error error;

        UTF8_FROM_UCS4(ucs4, s, len, error);

        return error;
}

parserutils_error parserutils_charset_utf8_length(const uint8_t *s, size_t max,
                size_t *len)
{
        parserutils_error error;

        UTF8_LENGTH(s, max, len, error);

        return error;
}

parserutils_error parserutils_charset_utf8_char_byte_length(const uint8_t *s,
                size_t *len)
{
        parserutils_error error;

        UTF8_CHAR_BYTE_LENGTH(s, len, error);

        return error;
}

parserutils_error parserutils_charset_utf8_prev(const uint8_t *s, uint32_t off,
                uint32_t *prevoff)
{
        parserutils_error error;

        UTF8_PREV(s, off, prevoff, error);

        return error;
}

parserutils_error parserutils_charset_utf8_next(const uint8_t *s, uint32_t len,
                uint32_t off, uint32_t *nextoff)
{
        parserutils_error error;

        UTF8_NEXT(s, len, off, nextoff, error);

        return error;
}

parserutils_error parserutils_charset_utf8_next_paranoid(const uint8_t *s, 
                uint32_t len, uint32_t off, uint32_t *nextoff)
{
        parserutils_error error;

        UTF8_NEXT_PARANOID(s, len, off, nextoff, error);

        return error;
}