harfbuzz/src/hb-glib.cc

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/*
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* Copyright © 2009 Red Hat, Inc.
* Copyright © 2011 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Red Hat Author(s): Behdad Esfahbod
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* Google Author(s): Behdad Esfahbod
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*/
#include "hb-private.hh"
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#include "hb-glib.h"
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#include "hb-unicode-private.hh"
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#include <glib.h>
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HB_BEGIN_DECLS
static const hb_script_t
glib_script_to_script[] =
{
HB_SCRIPT_COMMON,
HB_SCRIPT_INHERITED,
HB_SCRIPT_ARABIC,
HB_SCRIPT_ARMENIAN,
HB_SCRIPT_BENGALI,
HB_SCRIPT_BOPOMOFO,
HB_SCRIPT_CHEROKEE,
HB_SCRIPT_COPTIC,
HB_SCRIPT_CYRILLIC,
HB_SCRIPT_DESERET,
HB_SCRIPT_DEVANAGARI,
HB_SCRIPT_ETHIOPIC,
HB_SCRIPT_GEORGIAN,
HB_SCRIPT_GOTHIC,
HB_SCRIPT_GREEK,
HB_SCRIPT_GUJARATI,
HB_SCRIPT_GURMUKHI,
HB_SCRIPT_HAN,
HB_SCRIPT_HANGUL,
HB_SCRIPT_HEBREW,
HB_SCRIPT_HIRAGANA,
HB_SCRIPT_KANNADA,
HB_SCRIPT_KATAKANA,
HB_SCRIPT_KHMER,
HB_SCRIPT_LAO,
HB_SCRIPT_LATIN,
HB_SCRIPT_MALAYALAM,
HB_SCRIPT_MONGOLIAN,
HB_SCRIPT_MYANMAR,
HB_SCRIPT_OGHAM,
HB_SCRIPT_OLD_ITALIC,
HB_SCRIPT_ORIYA,
HB_SCRIPT_RUNIC,
HB_SCRIPT_SINHALA,
HB_SCRIPT_SYRIAC,
HB_SCRIPT_TAMIL,
HB_SCRIPT_TELUGU,
HB_SCRIPT_THAANA,
HB_SCRIPT_THAI,
HB_SCRIPT_TIBETAN,
HB_SCRIPT_CANADIAN_ABORIGINAL,
HB_SCRIPT_YI,
HB_SCRIPT_TAGALOG,
HB_SCRIPT_HANUNOO,
HB_SCRIPT_BUHID,
HB_SCRIPT_TAGBANWA,
/* Unicode-4.0 additions */
HB_SCRIPT_BRAILLE,
HB_SCRIPT_CYPRIOT,
HB_SCRIPT_LIMBU,
HB_SCRIPT_OSMANYA,
HB_SCRIPT_SHAVIAN,
HB_SCRIPT_LINEAR_B,
HB_SCRIPT_TAI_LE,
HB_SCRIPT_UGARITIC,
/* Unicode-4.1 additions */
HB_SCRIPT_NEW_TAI_LUE,
HB_SCRIPT_BUGINESE,
HB_SCRIPT_GLAGOLITIC,
HB_SCRIPT_TIFINAGH,
HB_SCRIPT_SYLOTI_NAGRI,
HB_SCRIPT_OLD_PERSIAN,
HB_SCRIPT_KHAROSHTHI,
/* Unicode-5.0 additions */
HB_SCRIPT_UNKNOWN,
HB_SCRIPT_BALINESE,
HB_SCRIPT_CUNEIFORM,
HB_SCRIPT_PHOENICIAN,
HB_SCRIPT_PHAGS_PA,
HB_SCRIPT_NKO,
/* Unicode-5.1 additions */
HB_SCRIPT_KAYAH_LI,
HB_SCRIPT_LEPCHA,
HB_SCRIPT_REJANG,
HB_SCRIPT_SUNDANESE,
HB_SCRIPT_SAURASHTRA,
HB_SCRIPT_CHAM,
HB_SCRIPT_OL_CHIKI,
HB_SCRIPT_VAI,
HB_SCRIPT_CARIAN,
HB_SCRIPT_LYCIAN,
HB_SCRIPT_LYDIAN,
/* Unicode-5.2 additions */
HB_SCRIPT_AVESTAN,
HB_SCRIPT_BAMUM,
HB_SCRIPT_EGYPTIAN_HIEROGLYPHS,
HB_SCRIPT_IMPERIAL_ARAMAIC,
HB_SCRIPT_INSCRIPTIONAL_PAHLAVI,
HB_SCRIPT_INSCRIPTIONAL_PARTHIAN,
HB_SCRIPT_JAVANESE,
HB_SCRIPT_KAITHI,
HB_SCRIPT_TAI_THAM,
HB_SCRIPT_LISU,
HB_SCRIPT_MEETEI_MAYEK,
HB_SCRIPT_OLD_SOUTH_ARABIAN,
HB_SCRIPT_OLD_TURKIC,
HB_SCRIPT_SAMARITAN,
HB_SCRIPT_TAI_VIET,
/* Unicode-6.0 additions */
HB_SCRIPT_BATAK,
HB_SCRIPT_BRAHMI,
HB_SCRIPT_MANDAIC
};
hb_script_t
hb_glib_script_to_script (GUnicodeScript script)
{
if (likely ((unsigned int) script < ARRAY_LENGTH (glib_script_to_script)))
return glib_script_to_script[script];
if (unlikely (script == G_UNICODE_SCRIPT_INVALID_CODE))
return HB_SCRIPT_INVALID;
return HB_SCRIPT_UNKNOWN;
}
GUnicodeScript
hb_glib_script_from_script (hb_script_t script)
{
unsigned int count = ARRAY_LENGTH (glib_script_to_script);
for (unsigned int i = 0; i < count; i++)
if (glib_script_to_script[i] == script)
return (GUnicodeScript) i;
if (unlikely (script == HB_SCRIPT_INVALID))
return G_UNICODE_SCRIPT_INVALID_CODE;
return G_UNICODE_SCRIPT_UNKNOWN;
}
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static unsigned int
hb_glib_get_combining_class (hb_unicode_funcs_t *ufuncs,
hb_codepoint_t unicode,
void *user_data)
{
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return g_unichar_combining_class (unicode);
}
static unsigned int
hb_glib_get_eastasian_width (hb_unicode_funcs_t *ufuncs,
hb_codepoint_t unicode,
void *user_data)
{
return g_unichar_iswide (unicode) ? 2 : 1;
}
static hb_unicode_general_category_t
hb_glib_get_general_category (hb_unicode_funcs_t *ufuncs,
hb_codepoint_t unicode,
void *user_data)
{
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/* 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_get_mirroring (hb_unicode_funcs_t *ufuncs,
hb_codepoint_t unicode,
void *user_data)
{
g_unichar_get_mirror_char (unicode, &unicode);
return unicode;
}
static hb_script_t
hb_glib_get_script (hb_unicode_funcs_t *ufuncs,
hb_codepoint_t unicode,
void *user_data)
{
return hb_glib_script_to_script (g_unichar_get_script (unicode));
}
static hb_unicode_funcs_t glib_ufuncs = {
HB_REFERENCE_COUNT_INVALID, /* ref_count */
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NULL, /* parent */
TRUE, /* immutable */
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{
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hb_glib_get_combining_class,
hb_glib_get_eastasian_width,
hb_glib_get_general_category,
hb_glib_get_mirroring,
hb_glib_get_script
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}
};
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hb_unicode_funcs_t *
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hb_glib_get_unicode_funcs (void)
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{
return &glib_ufuncs;
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}
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HB_END_DECLS