/*
 * Copyright (C) 2012 Grigori Goronzy <greg@kinoho.net>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdlib.h>
#include <hb.h>
#include "ucdn.h"

static const hb_script_t ucdn_script_translate[] = {
    HB_SCRIPT_COMMON,
    HB_SCRIPT_LATIN,
    HB_SCRIPT_GREEK,
    HB_SCRIPT_CYRILLIC,
    HB_SCRIPT_ARMENIAN,
    HB_SCRIPT_HEBREW,
    HB_SCRIPT_ARABIC,
    HB_SCRIPT_SYRIAC,
    HB_SCRIPT_THAANA,
    HB_SCRIPT_DEVANAGARI,
    HB_SCRIPT_BENGALI,
    HB_SCRIPT_GURMUKHI,
    HB_SCRIPT_GUJARATI,
    HB_SCRIPT_ORIYA,
    HB_SCRIPT_TAMIL,
    HB_SCRIPT_TELUGU,
    HB_SCRIPT_KANNADA,
    HB_SCRIPT_MALAYALAM,
    HB_SCRIPT_SINHALA,
    HB_SCRIPT_THAI,
    HB_SCRIPT_LAO,
    HB_SCRIPT_TIBETAN,
    HB_SCRIPT_MYANMAR,
    HB_SCRIPT_GEORGIAN,
    HB_SCRIPT_HANGUL,
    HB_SCRIPT_ETHIOPIC,
    HB_SCRIPT_CHEROKEE,
    HB_SCRIPT_CANADIAN_ABORIGINAL,
    HB_SCRIPT_OGHAM,
    HB_SCRIPT_RUNIC,
    HB_SCRIPT_KHMER,
    HB_SCRIPT_MONGOLIAN,
    HB_SCRIPT_HIRAGANA,
    HB_SCRIPT_KATAKANA,
    HB_SCRIPT_BOPOMOFO,
    HB_SCRIPT_HAN,
    HB_SCRIPT_YI,
    HB_SCRIPT_OLD_ITALIC,
    HB_SCRIPT_GOTHIC,
    HB_SCRIPT_DESERET,
    HB_SCRIPT_INHERITED,
    HB_SCRIPT_TAGALOG,
    HB_SCRIPT_HANUNOO,
    HB_SCRIPT_BUHID,
    HB_SCRIPT_TAGBANWA,
    HB_SCRIPT_LIMBU,
    HB_SCRIPT_TAI_LE,
    HB_SCRIPT_LINEAR_B,
    HB_SCRIPT_UGARITIC,
    HB_SCRIPT_SHAVIAN,
    HB_SCRIPT_OSMANYA,
    HB_SCRIPT_CYPRIOT,
    HB_SCRIPT_BRAILLE,
    HB_SCRIPT_BUGINESE,
    HB_SCRIPT_COPTIC,
    HB_SCRIPT_NEW_TAI_LUE,
    HB_SCRIPT_GLAGOLITIC,
    HB_SCRIPT_TIFINAGH,
    HB_SCRIPT_SYLOTI_NAGRI,
    HB_SCRIPT_OLD_PERSIAN,
    HB_SCRIPT_KHAROSHTHI,
    HB_SCRIPT_BALINESE,
    HB_SCRIPT_CUNEIFORM,
    HB_SCRIPT_PHOENICIAN,
    HB_SCRIPT_PHAGS_PA,
    HB_SCRIPT_NKO,
    HB_SCRIPT_SUNDANESE,
    HB_SCRIPT_LEPCHA,
    HB_SCRIPT_OL_CHIKI,
    HB_SCRIPT_VAI,
    HB_SCRIPT_SAURASHTRA,
    HB_SCRIPT_KAYAH_LI,
    HB_SCRIPT_REJANG,
    HB_SCRIPT_LYCIAN,
    HB_SCRIPT_CARIAN,
    HB_SCRIPT_LYDIAN,
    HB_SCRIPT_CHAM,
    HB_SCRIPT_TAI_THAM,
    HB_SCRIPT_TAI_VIET,
    HB_SCRIPT_AVESTAN,
    HB_SCRIPT_EGYPTIAN_HIEROGLYPHS,
    HB_SCRIPT_SAMARITAN,
    HB_SCRIPT_LISU,
    HB_SCRIPT_BAMUM,
    HB_SCRIPT_JAVANESE,
    HB_SCRIPT_MEETEI_MAYEK,
    HB_SCRIPT_IMPERIAL_ARAMAIC,
    HB_SCRIPT_OLD_SOUTH_ARABIAN,
    HB_SCRIPT_INSCRIPTIONAL_PARTHIAN,
    HB_SCRIPT_INSCRIPTIONAL_PAHLAVI,
    HB_SCRIPT_OLD_TURKIC,
    HB_SCRIPT_KAITHI,
    HB_SCRIPT_BATAK,
    HB_SCRIPT_BRAHMI,
    HB_SCRIPT_MANDAIC,
    HB_SCRIPT_CHAKMA,
    HB_SCRIPT_MEROITIC_CURSIVE,
    HB_SCRIPT_MEROITIC_HIEROGLYPHS,
    HB_SCRIPT_MIAO,
    HB_SCRIPT_SHARADA,
    HB_SCRIPT_SORA_SOMPENG,
    HB_SCRIPT_TAKRI,
    HB_SCRIPT_UNKNOWN,
};

static unsigned int
hb_ucdn_combining_class(hb_unicode_funcs_t *ufuncs, hb_codepoint_t unicode,
        void *user_data)
{
    return ucdn_get_combining_class(unicode);
}

static unsigned int
hb_ucdn_eastasian_width(hb_unicode_funcs_t *ufuncs, hb_codepoint_t unicode,
        void *user_data)
{
    int w = ucdn_get_east_asian_width(unicode);
    return (w == UCDN_EAST_ASIAN_F || w == UCDN_EAST_ASIAN_W) ? 2 : 1;
}

static hb_unicode_general_category_t
hb_ucdn_general_category(hb_unicode_funcs_t *ufuncs,
        hb_codepoint_t unicode, void *user_data)
{
    return (hb_unicode_general_category_t)ucdn_get_general_category(unicode);
}

static hb_codepoint_t
hb_ucdn_mirror(hb_unicode_funcs_t *ufuncs, hb_codepoint_t unicode,
        void *user_data)
{
    return ucdn_mirror(unicode);
}

static hb_script_t
hb_ucdn_script(hb_unicode_funcs_t *ufuncs, hb_codepoint_t unicode,
        void *user_data)
{
    return ucdn_script_translate[ucdn_get_script(unicode)];
}

static hb_bool_t
hb_ucdn_compose(hb_unicode_funcs_t *ufuncs, hb_codepoint_t a,
        hb_codepoint_t b, hb_codepoint_t *ab, void *user_data)
{
    return ucdn_compose(ab, a, b);
}

static hb_bool_t
hb_ucdn_decompose(hb_unicode_funcs_t *ufuncs, hb_codepoint_t ab,
        hb_codepoint_t *a, hb_codepoint_t *b, void *user_data)
{
    return ucdn_decompose(ab, a, b);
}

static unsigned int
hb_ucdn_compat_decompose(hb_unicode_funcs_t *ufuncs, hb_codepoint_t u,
        hb_codepoint_t *decomposed, void *user_data)
{
    return ucdn_compat_decompose(u, decomposed);
}

static hb_unicode_funcs_t *hb_ucdn_make_unicode_funcs(void)
{
    hb_unicode_funcs_t *funcs = hb_unicode_funcs_create(NULL);
    hb_unicode_funcs_set_combining_class_func(funcs, hb_ucdn_combining_class, NULL, NULL);
    hb_unicode_funcs_set_eastasian_width_func(funcs, hb_ucdn_eastasian_width, NULL, NULL);
    hb_unicode_funcs_set_general_category_func(funcs, hb_ucdn_general_category, NULL, NULL);
    hb_unicode_funcs_set_mirroring_func(funcs, hb_ucdn_mirror, NULL, NULL);
    hb_unicode_funcs_set_script_func(funcs, hb_ucdn_script, NULL, NULL);
    hb_unicode_funcs_set_compose_func(funcs, hb_ucdn_compose, NULL, NULL);
    hb_unicode_funcs_set_decompose_func(funcs, hb_ucdn_decompose, NULL, NULL);
    hb_unicode_funcs_set_decompose_compatibility_func(funcs, hb_ucdn_compat_decompose, NULL, NULL);
    hb_unicode_funcs_make_immutable(funcs);

    return funcs;
}