#ifdef HAVE_GLIB
/*
Port from c++ is protected by a GNU Lesser GPLv3
Copyright © 2013 Sylvain BERTRAND <sylvain.bertrand@gmail.com>
                                  <sylware@legeek.net>       
*/
#include "hb.h"
#include "hb-private.h"
#include "hb-atomic-private.h"
#include "hb-glib.h"
#include "hb-unicode-private.h"

GUnicodeScript hb_glib_script_from_script(hb_script_t script)
{
	return g_unicode_script_from_iso15924(script);
}

hb_script_t hb_glib_script_to_script(GUnicodeScript script)
{
	return (hb_script_t) g_unicode_script_to_iso15924(script);
}

static hb_unicode_combining_class_t
hb_glib_unicode_combining_class(hb_unicode_funcs_t * ufuncs HB_UNUSED,
				hb_codepoint_t unicode,
				void *user_data HB_UNUSED)
{
	return (hb_unicode_combining_class_t)
	    g_unichar_combining_class(unicode);
}

static unsigned int hb_glib_unicode_eastasian_width(hb_unicode_funcs_t *
						    ufuncs HB_UNUSED,
						    hb_codepoint_t unicode,
						    void *user_data HB_UNUSED)
{
	return g_unichar_iswide(unicode) ? 2 : 1;
}

static hb_unicode_general_category_t
hb_glib_unicode_general_category(hb_unicode_funcs_t * ufuncs HB_UNUSED,
				 hb_codepoint_t unicode,
				 void *user_data HB_UNUSED)
{
	/*hb_unicode_general_category_t and GUnicodeType are identical */
	return (hb_unicode_general_category_t) g_unichar_type(unicode);
}

static hb_codepoint_t hb_glib_unicode_mirroring(hb_unicode_funcs_t *
						ufuncs HB_UNUSED,
						hb_codepoint_t unicode,
						void *user_data HB_UNUSED)
{
	g_unichar_get_mirror_char(unicode, &unicode);
	return unicode;
}

static hb_script_t hb_glib_unicode_script(hb_unicode_funcs_t * ufuncs HB_UNUSED,
					  hb_codepoint_t unicode,
					  void *user_data HB_UNUSED)
{
	return hb_glib_script_to_script(g_unichar_get_script(unicode));
}

static hb_bool_t hb_glib_unicode_compose(hb_unicode_funcs_t * ufuncs HB_UNUSED,
					 hb_codepoint_t a, hb_codepoint_t b,
					 hb_codepoint_t * ab,
					 void *user_data HB_UNUSED)
{
	return g_unichar_compose(a, b, ab);
}

static hb_bool_t hb_glib_unicode_decompose(hb_unicode_funcs_t *
					   ufuncs HB_UNUSED, hb_codepoint_t ab,
					   hb_codepoint_t * a,
					   hb_codepoint_t * b,
					   void *user_data HB_UNUSED)
{
	return g_unichar_decompose(ab, a, b);
}

static unsigned int hb_glib_unicode_decompose_compatibility(hb_unicode_funcs_t *
							    ufuncs HB_UNUSED,
							    hb_codepoint_t u,
							    hb_codepoint_t *
							    decomposed,
							    void *user_data
							    HB_UNUSED)
{
	return g_unichar_fully_decompose(u, TRUE, decomposed,
					 HB_UNICODE_MAX_DECOMPOSITION_LEN);
}

/*XXX:should go in lib "global init"*/
static hb_unicode_funcs_t hb_glib_unicode_funcs = {
	REF_CNT_INVALID_VAL,	/*ref_cnt */
	NULL,			/*parent */
	TRUE,			/*immutable */
	{			/*func */
	 hb_glib_unicode_combining_class,
	 hb_glib_unicode_eastasian_width,
	 hb_glib_unicode_general_category,
	 hb_glib_unicode_mirroring,
	 hb_glib_unicode_script,
	 hb_glib_unicode_compose,
	 hb_glib_unicode_decompose,
	 hb_glib_unicode_decompose_compatibility},
	{			/*user_data */
	 NULL,			/*combining_class */
	 NULL,			/*eastasian_width */
	 NULL,			/*general_category */
	 NULL,			/*mirroring */
	 NULL,			/*script */
	 NULL,			/*compose */
	 NULL,			/*decompose */
	 NULL			/*decompose_compatibility */
	 },
	{			/*destroy */
	 NULL,			/*combining_class */
	 NULL,			/*eastasian_width */
	 NULL,			/*general_category */
	 NULL,			/*mirroring */
	 NULL,			/*script */
	 NULL,			/*compose */
	 NULL,			/*decompose */
	 NULL			/*decompose_compatibility */
	 }
};

hb_unicode_funcs_t *hb_glib_get_unicode_funcs(void)
{
	return &hb_glib_unicode_funcs;
}
#endif