src/lib-charset/charset-utf8-only.c

/* Copyright (c) 2002-2018 Dovecot authors, see the included COPYING file */

#include "lib.h"
#include "charset-utf8-private.h"

struct charset_translation {
    normalizer_func_t *normalizer;
};

static int
utf8only_charset_to_utf8_begin(const char *charset,
                   normalizer_func_t *normalizer,
                   struct charset_translation **t_r)
{
    struct charset_translation *t;

    if (!charset_is_utf8(charset)) {
        /* no support for charsets that need translation */
        return -1;
    }

    t = i_new(struct charset_translation, 1);
    t->normalizer = normalizer;
    *t_r = t;
    return 0;
}

static void utf8only_charset_to_utf8_end(struct charset_translation *t)
{
    i_free(t);
}

static void
utf8only_charset_to_utf8_reset(struct charset_translation *t ATTR_UNUSED)
{
}

static enum charset_result
utf8only_charset_to_utf8(struct charset_translation *t,
             const unsigned char *src, size_t *src_size,
             buffer_t *dest)
{
    return charset_utf8_to_utf8(t->normalizer, src, src_size, dest);
}

const struct charset_utf8_vfuncs charset_utf8only = {
    .to_utf8_begin = utf8only_charset_to_utf8_begin,
    .to_utf8_end = utf8only_charset_to_utf8_end,
    .to_utf8_reset = utf8only_charset_to_utf8_reset,
    .to_utf8 = utf8only_charset_to_utf8,
};