diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-glib.cc')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-glib.cc | 279 |
1 files changed, 50 insertions, 229 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-glib.cc b/src/3rdparty/harfbuzz-ng/src/hb-glib.cc index db02b6760e..1da81696e7 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-glib.cc +++ b/src/3rdparty/harfbuzz-ng/src/hb-glib.cc @@ -41,166 +41,46 @@ * @short_description: GLib integration * @include: hb-glib.h * - * Functions for using HarfBuzz with the GLib library to provide Unicode data. + * Functions for using HarfBuzz with the GLib library. + * + * HarfBuzz supports using GLib to provide Unicode data, by attaching + * GLib functions to the virtual methods in a #hb_unicode_funcs_t function + * structure. **/ -#if !GLIB_CHECK_VERSION(2,29,14) -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_SYLLABICS, - 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, - - /* Unicode-6.1 additions */ - HB_SCRIPT_CHAKMA, - HB_SCRIPT_MEROITIC_CURSIVE, - HB_SCRIPT_MEROITIC_HIEROGLYPHS, - HB_SCRIPT_MIAO, - HB_SCRIPT_SHARADA, - HB_SCRIPT_SORA_SOMPENG, - HB_SCRIPT_TAKRI -}; -#endif - +/** + * hb_glib_script_to_script: + * @script: The GUnicodeScript identifier to query + * + * Fetches the #hb_script_t script that corresponds to the + * specified GUnicodeScript identifier. + * + * Return value: the #hb_script_t script found + * + * Since: 0.9.38 + **/ hb_script_t hb_glib_script_to_script (GUnicodeScript script) { -#if GLIB_CHECK_VERSION(2,29,14) return (hb_script_t) g_unicode_script_to_iso15924 (script); -#else - 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; -#endif } +/** + * hb_glib_script_from_script: + * @script: The #hb_script_t to query + * + * Fetches the GUnicodeScript identifier that corresponds to the + * specified #hb_script_t script. + * + * Return value: the GUnicodeScript identifier found + * + * Since: 0.9.38 + **/ GUnicodeScript hb_glib_script_from_script (hb_script_t script) { -#if GLIB_CHECK_VERSION(2,29,14) return g_unicode_script_from_iso15924 (script); -#else - 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; -#endif } @@ -249,32 +129,9 @@ hb_glib_unicode_compose (hb_unicode_funcs_t *ufuncs HB_UNUSED, { #if GLIB_CHECK_VERSION(2,29,12) return g_unichar_compose (a, b, ab); +#else + return false; #endif - - /* We don't ifdef-out the fallback code such that compiler always - * sees it and makes sure it's compilable. */ - - gchar utf8[12]; - gchar *normalized; - int len; - hb_bool_t ret; - - len = g_unichar_to_utf8 (a, utf8); - len += g_unichar_to_utf8 (b, utf8 + len); - normalized = g_utf8_normalize (utf8, len, G_NORMALIZE_NFC); - len = g_utf8_strlen (normalized, -1); - if (unlikely (!len)) - return false; - - if (len == 1) { - *ab = g_utf8_get_char (normalized); - ret = true; - } else { - ret = false; - } - - g_free (normalized); - return ret; } static hb_bool_t @@ -286,61 +143,13 @@ hb_glib_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED, { #if GLIB_CHECK_VERSION(2,29,12) return g_unichar_decompose (ab, a, b); +#else + return false; #endif - - /* We don't ifdef-out the fallback code such that compiler always - * sees it and makes sure it's compilable. */ - - gchar utf8[6]; - gchar *normalized; - int len; - hb_bool_t ret; - - len = g_unichar_to_utf8 (ab, utf8); - normalized = g_utf8_normalize (utf8, len, G_NORMALIZE_NFD); - len = g_utf8_strlen (normalized, -1); - if (unlikely (!len)) - return false; - - if (len == 1) { - *a = g_utf8_get_char (normalized); - *b = 0; - ret = *a != ab; - } else if (len == 2) { - *a = g_utf8_get_char (normalized); - *b = g_utf8_get_char (g_utf8_next_char (normalized)); - /* Here's the ugly part: if ab decomposes to a single character and - * that character decomposes again, we have to detect that and undo - * the second part :-(. */ - gchar *recomposed = g_utf8_normalize (normalized, -1, G_NORMALIZE_NFC); - hb_codepoint_t c = g_utf8_get_char (recomposed); - if (c != ab && c != *a) { - *a = c; - *b = 0; - } - g_free (recomposed); - ret = true; - } else { - /* If decomposed to more than two characters, take the last one, - * and recompose the rest to get the first component. */ - gchar *end = g_utf8_offset_to_pointer (normalized, len - 1); - gchar *recomposed; - *b = g_utf8_get_char (end); - recomposed = g_utf8_normalize (normalized, end - normalized, G_NORMALIZE_NFC); - /* We expect that recomposed has exactly one character now. */ - *a = g_utf8_get_char (recomposed); - g_free (recomposed); - ret = true; - } - - g_free (normalized); - return ret; } -#if HB_USE_ATEXIT -static void free_static_glib_funcs (); -#endif +static inline void free_static_glib_funcs (); static struct hb_glib_unicode_funcs_lazy_loader_t : hb_unicode_funcs_lazy_loader_t<hb_glib_unicode_funcs_lazy_loader_t> { @@ -357,22 +166,28 @@ static struct hb_glib_unicode_funcs_lazy_loader_t : hb_unicode_funcs_lazy_loader hb_unicode_funcs_make_immutable (funcs); -#if HB_USE_ATEXIT - atexit (free_static_glib_funcs); -#endif + hb_atexit (free_static_glib_funcs); return funcs; } } static_glib_funcs; -#if HB_USE_ATEXIT -static +static inline void free_static_glib_funcs () { static_glib_funcs.free_instance (); } -#endif +/** + * hb_glib_get_unicode_funcs: + * + * Fetches a Unicode-functions structure that is populated + * with the appropriate GLib function for each method. + * + * Return value: (transfer none): a pointer to the #hb_unicode_funcs_t Unicode-functions structure + * + * Since: 0.9.38 + **/ hb_unicode_funcs_t * hb_glib_get_unicode_funcs () { @@ -391,6 +206,12 @@ _hb_g_bytes_unref (void *data) /** * hb_glib_blob_create: + * @gbytes: the GBytes structure to work upon + * + * Creates an #hb_blob_t blob from the specified + * GBytes data structure. + * + * Return value: (transfer full): the new #hb_blob_t blob object * * Since: 0.9.38 **/ |