--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/share/native/libfontmanager/harfbuzz/hb-unicode.hh Fri Mar 01 16:59:19 2019 -0800
@@ -0,0 +1,394 @@
+/*
+ * Copyright © 2009 Red Hat, Inc.
+ * Copyright © 2011 Codethink Limited
+ * Copyright © 2010,2011,2012 Google, Inc.
+ *
+ * This is part of HarfBuzz, a text shaping library.
+ *
+ * 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
+ * Codethink Author(s): Ryan Lortie
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_UNICODE_HH
+#define HB_UNICODE_HH
+
+#include "hb.hh"
+
+
+extern HB_INTERNAL const uint8_t _hb_modified_combining_class[256];
+
+/*
+ * hb_unicode_funcs_t
+ */
+
+#define HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS \
+ HB_UNICODE_FUNC_IMPLEMENT (combining_class) \
+ HB_UNICODE_FUNC_IMPLEMENT (eastasian_width) \
+ HB_UNICODE_FUNC_IMPLEMENT (general_category) \
+ HB_UNICODE_FUNC_IMPLEMENT (mirroring) \
+ HB_UNICODE_FUNC_IMPLEMENT (script) \
+ HB_UNICODE_FUNC_IMPLEMENT (compose) \
+ HB_UNICODE_FUNC_IMPLEMENT (decompose) \
+ HB_UNICODE_FUNC_IMPLEMENT (decompose_compatibility) \
+ /* ^--- Add new callbacks here */
+
+/* Simple callbacks are those taking a hb_codepoint_t and returning a hb_codepoint_t */
+#define HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS_SIMPLE \
+ HB_UNICODE_FUNC_IMPLEMENT (hb_unicode_combining_class_t, combining_class) \
+ HB_UNICODE_FUNC_IMPLEMENT (unsigned int, eastasian_width) \
+ HB_UNICODE_FUNC_IMPLEMENT (hb_unicode_general_category_t, general_category) \
+ HB_UNICODE_FUNC_IMPLEMENT (hb_codepoint_t, mirroring) \
+ HB_UNICODE_FUNC_IMPLEMENT (hb_script_t, script) \
+ /* ^--- Add new simple callbacks here */
+
+struct hb_unicode_funcs_t
+{
+ hb_object_header_t header;
+
+ hb_unicode_funcs_t *parent;
+
+#define HB_UNICODE_FUNC_IMPLEMENT(return_type, name) \
+ return_type name (hb_codepoint_t unicode) { return func.name (this, unicode, user_data.name); }
+HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS_SIMPLE
+#undef HB_UNICODE_FUNC_IMPLEMENT
+
+ hb_bool_t compose (hb_codepoint_t a, hb_codepoint_t b,
+ hb_codepoint_t *ab)
+ {
+ *ab = 0;
+ if (unlikely (!a || !b)) return false;
+ return func.compose (this, a, b, ab, user_data.compose);
+ }
+
+ hb_bool_t decompose (hb_codepoint_t ab,
+ hb_codepoint_t *a, hb_codepoint_t *b)
+ {
+ *a = ab; *b = 0;
+ return func.decompose (this, ab, a, b, user_data.decompose);
+ }
+
+ unsigned int decompose_compatibility (hb_codepoint_t u,
+ hb_codepoint_t *decomposed)
+ {
+ unsigned int ret = func.decompose_compatibility (this, u, decomposed, user_data.decompose_compatibility);
+ if (ret == 1 && u == decomposed[0]) {
+ decomposed[0] = 0;
+ return 0;
+ }
+ decomposed[ret] = 0;
+ return ret;
+ }
+
+ unsigned int
+ modified_combining_class (hb_codepoint_t u)
+ {
+ /* XXX This hack belongs to the Myanmar shaper. */
+ if (unlikely (u == 0x1037u)) u = 0x103Au;
+
+ /* XXX This hack belongs to the USE shaper (for Tai Tham):
+ * Reorder SAKOT to ensure it comes after any tone marks. */
+ if (unlikely (u == 0x1A60u)) return 254;
+
+ /* XXX This hack belongs to the Tibetan shaper:
+ * Reorder PADMA to ensure it comes after any vowel marks. */
+ if (unlikely (u == 0x0FC6u)) return 254;
+ /* Reorder TSA -PHRU to reorder before U+0F74 */
+ if (unlikely (u == 0x0F39u)) return 127;
+
+ return _hb_modified_combining_class[combining_class (u)];
+ }
+
+ static hb_bool_t
+ is_variation_selector (hb_codepoint_t unicode)
+ {
+ /* U+180B..180D MONGOLIAN FREE VARIATION SELECTORs are handled in the
+ * Arabic shaper. No need to match them here. */
+ return unlikely (hb_in_ranges<hb_codepoint_t> (unicode,
+ 0xFE00u, 0xFE0Fu, /* VARIATION SELECTOR-1..16 */
+ 0xE0100u, 0xE01EFu)); /* VARIATION SELECTOR-17..256 */
+ }
+
+ /* Default_Ignorable codepoints:
+ *
+ * Note: While U+115F, U+1160, U+3164 and U+FFA0 are Default_Ignorable,
+ * we do NOT want to hide them, as the way Uniscribe has implemented them
+ * is with regular spacing glyphs, and that's the way fonts are made to work.
+ * As such, we make exceptions for those four.
+ * Also ignoring U+1BCA0..1BCA3. https://github.com/harfbuzz/harfbuzz/issues/503
+ *
+ * Unicode 7.0:
+ * $ grep '; Default_Ignorable_Code_Point ' DerivedCoreProperties.txt | sed 's/;.*#/#/'
+ * 00AD # Cf SOFT HYPHEN
+ * 034F # Mn COMBINING GRAPHEME JOINER
+ * 061C # Cf ARABIC LETTER MARK
+ * 115F..1160 # Lo [2] HANGUL CHOSEONG FILLER..HANGUL JUNGSEONG FILLER
+ * 17B4..17B5 # Mn [2] KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT AA
+ * 180B..180D # Mn [3] MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE
+ * 180E # Cf MONGOLIAN VOWEL SEPARATOR
+ * 200B..200F # Cf [5] ZERO WIDTH SPACE..RIGHT-TO-LEFT MARK
+ * 202A..202E # Cf [5] LEFT-TO-RIGHT EMBEDDING..RIGHT-TO-LEFT OVERRIDE
+ * 2060..2064 # Cf [5] WORD JOINER..INVISIBLE PLUS
+ * 2065 # Cn <reserved-2065>
+ * 2066..206F # Cf [10] LEFT-TO-RIGHT ISOLATE..NOMINAL DIGIT SHAPES
+ * 3164 # Lo HANGUL FILLER
+ * FE00..FE0F # Mn [16] VARIATION SELECTOR-1..VARIATION SELECTOR-16
+ * FEFF # Cf ZERO WIDTH NO-BREAK SPACE
+ * FFA0 # Lo HALFWIDTH HANGUL FILLER
+ * FFF0..FFF8 # Cn [9] <reserved-FFF0>..<reserved-FFF8>
+ * 1BCA0..1BCA3 # Cf [4] SHORTHAND FORMAT LETTER OVERLAP..SHORTHAND FORMAT UP STEP
+ * 1D173..1D17A # Cf [8] MUSICAL SYMBOL BEGIN BEAM..MUSICAL SYMBOL END PHRASE
+ * E0000 # Cn <reserved-E0000>
+ * E0001 # Cf LANGUAGE TAG
+ * E0002..E001F # Cn [30] <reserved-E0002>..<reserved-E001F>
+ * E0020..E007F # Cf [96] TAG SPACE..CANCEL TAG
+ * E0080..E00FF # Cn [128] <reserved-E0080>..<reserved-E00FF>
+ * E0100..E01EF # Mn [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
+ * E01F0..E0FFF # Cn [3600] <reserved-E01F0>..<reserved-E0FFF>
+ */
+ static hb_bool_t
+ is_default_ignorable (hb_codepoint_t ch)
+ {
+ hb_codepoint_t plane = ch >> 16;
+ if (likely (plane == 0))
+ {
+ /* BMP */
+ hb_codepoint_t page = ch >> 8;
+ switch (page) {
+ case 0x00: return unlikely (ch == 0x00ADu);
+ case 0x03: return unlikely (ch == 0x034Fu);
+ case 0x06: return unlikely (ch == 0x061Cu);
+ case 0x17: return hb_in_range<hb_codepoint_t> (ch, 0x17B4u, 0x17B5u);
+ case 0x18: return hb_in_range<hb_codepoint_t> (ch, 0x180Bu, 0x180Eu);
+ case 0x20: return hb_in_ranges<hb_codepoint_t> (ch, 0x200Bu, 0x200Fu,
+ 0x202Au, 0x202Eu,
+ 0x2060u, 0x206Fu);
+ case 0xFE: return hb_in_range<hb_codepoint_t> (ch, 0xFE00u, 0xFE0Fu) || ch == 0xFEFFu;
+ case 0xFF: return hb_in_range<hb_codepoint_t> (ch, 0xFFF0u, 0xFFF8u);
+ default: return false;
+ }
+ }
+ else
+ {
+ /* Other planes */
+ switch (plane) {
+ case 0x01: return hb_in_range<hb_codepoint_t> (ch, 0x1D173u, 0x1D17Au);
+ case 0x0E: return hb_in_range<hb_codepoint_t> (ch, 0xE0000u, 0xE0FFFu);
+ default: return false;
+ }
+ }
+ }
+
+ /* Space estimates based on:
+ * https://unicode.org/charts/PDF/U2000.pdf
+ * https://docs.microsoft.com/en-us/typography/develop/character-design-standards/whitespace
+ */
+ enum space_t {
+ NOT_SPACE = 0,
+ SPACE_EM = 1,
+ SPACE_EM_2 = 2,
+ SPACE_EM_3 = 3,
+ SPACE_EM_4 = 4,
+ SPACE_EM_5 = 5,
+ SPACE_EM_6 = 6,
+ SPACE_EM_16 = 16,
+ SPACE_4_EM_18, /* 4/18th of an EM! */
+ SPACE,
+ SPACE_FIGURE,
+ SPACE_PUNCTUATION,
+ SPACE_NARROW,
+ };
+ static space_t
+ space_fallback_type (hb_codepoint_t u)
+ {
+ switch (u)
+ {
+ /* All GC=Zs chars that can use a fallback. */
+ default: return NOT_SPACE; /* U+1680 OGHAM SPACE MARK */
+ case 0x0020u: return SPACE; /* U+0020 SPACE */
+ case 0x00A0u: return SPACE; /* U+00A0 NO-BREAK SPACE */
+ case 0x2000u: return SPACE_EM_2; /* U+2000 EN QUAD */
+ case 0x2001u: return SPACE_EM; /* U+2001 EM QUAD */
+ case 0x2002u: return SPACE_EM_2; /* U+2002 EN SPACE */
+ case 0x2003u: return SPACE_EM; /* U+2003 EM SPACE */
+ case 0x2004u: return SPACE_EM_3; /* U+2004 THREE-PER-EM SPACE */
+ case 0x2005u: return SPACE_EM_4; /* U+2005 FOUR-PER-EM SPACE */
+ case 0x2006u: return SPACE_EM_6; /* U+2006 SIX-PER-EM SPACE */
+ case 0x2007u: return SPACE_FIGURE; /* U+2007 FIGURE SPACE */
+ case 0x2008u: return SPACE_PUNCTUATION; /* U+2008 PUNCTUATION SPACE */
+ case 0x2009u: return SPACE_EM_5; /* U+2009 THIN SPACE */
+ case 0x200Au: return SPACE_EM_16; /* U+200A HAIR SPACE */
+ case 0x202Fu: return SPACE_NARROW; /* U+202F NARROW NO-BREAK SPACE */
+ case 0x205Fu: return SPACE_4_EM_18; /* U+205F MEDIUM MATHEMATICAL SPACE */
+ case 0x3000u: return SPACE_EM; /* U+3000 IDEOGRAPHIC SPACE */
+ }
+ }
+
+ struct {
+#define HB_UNICODE_FUNC_IMPLEMENT(name) hb_unicode_##name##_func_t name;
+ HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_UNICODE_FUNC_IMPLEMENT
+ } func;
+
+ struct {
+#define HB_UNICODE_FUNC_IMPLEMENT(name) void *name;
+ HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_UNICODE_FUNC_IMPLEMENT
+ } user_data;
+
+ struct {
+#define HB_UNICODE_FUNC_IMPLEMENT(name) hb_destroy_func_t name;
+ HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_UNICODE_FUNC_IMPLEMENT
+ } destroy;
+};
+DECLARE_NULL_INSTANCE (hb_unicode_funcs_t);
+
+
+/*
+ * Modified combining marks
+ */
+
+/* Hebrew
+ *
+ * We permute the "fixed-position" classes 10-26 into the order
+ * described in the SBL Hebrew manual:
+ *
+ * https://www.sbl-site.org/Fonts/SBLHebrewUserManual1.5x.pdf
+ *
+ * (as recommended by:
+ * https://forum.fontlab.com/archive-old-microsoft-volt-group/vista-and-diacritic-ordering/msg22823/)
+ *
+ * More details here:
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=662055
+ */
+#define HB_MODIFIED_COMBINING_CLASS_CCC10 22 /* sheva */
+#define HB_MODIFIED_COMBINING_CLASS_CCC11 15 /* hataf segol */
+#define HB_MODIFIED_COMBINING_CLASS_CCC12 16 /* hataf patah */
+#define HB_MODIFIED_COMBINING_CLASS_CCC13 17 /* hataf qamats */
+#define HB_MODIFIED_COMBINING_CLASS_CCC14 23 /* hiriq */
+#define HB_MODIFIED_COMBINING_CLASS_CCC15 18 /* tsere */
+#define HB_MODIFIED_COMBINING_CLASS_CCC16 19 /* segol */
+#define HB_MODIFIED_COMBINING_CLASS_CCC17 20 /* patah */
+#define HB_MODIFIED_COMBINING_CLASS_CCC18 21 /* qamats */
+#define HB_MODIFIED_COMBINING_CLASS_CCC19 14 /* holam */
+#define HB_MODIFIED_COMBINING_CLASS_CCC20 24 /* qubuts */
+#define HB_MODIFIED_COMBINING_CLASS_CCC21 12 /* dagesh */
+#define HB_MODIFIED_COMBINING_CLASS_CCC22 25 /* meteg */
+#define HB_MODIFIED_COMBINING_CLASS_CCC23 13 /* rafe */
+#define HB_MODIFIED_COMBINING_CLASS_CCC24 10 /* shin dot */
+#define HB_MODIFIED_COMBINING_CLASS_CCC25 11 /* sin dot */
+#define HB_MODIFIED_COMBINING_CLASS_CCC26 26 /* point varika */
+
+/*
+ * Arabic
+ *
+ * Modify to move Shadda (ccc=33) before other marks. See:
+ * https://unicode.org/faq/normalization.html#8
+ * https://unicode.org/faq/normalization.html#9
+ */
+#define HB_MODIFIED_COMBINING_CLASS_CCC27 28 /* fathatan */
+#define HB_MODIFIED_COMBINING_CLASS_CCC28 29 /* dammatan */
+#define HB_MODIFIED_COMBINING_CLASS_CCC29 30 /* kasratan */
+#define HB_MODIFIED_COMBINING_CLASS_CCC30 31 /* fatha */
+#define HB_MODIFIED_COMBINING_CLASS_CCC31 32 /* damma */
+#define HB_MODIFIED_COMBINING_CLASS_CCC32 33 /* kasra */
+#define HB_MODIFIED_COMBINING_CLASS_CCC33 27 /* shadda */
+#define HB_MODIFIED_COMBINING_CLASS_CCC34 34 /* sukun */
+#define HB_MODIFIED_COMBINING_CLASS_CCC35 35 /* superscript alef */
+
+/* Syriac */
+#define HB_MODIFIED_COMBINING_CLASS_CCC36 36 /* superscript alaph */
+
+/* Telugu
+ *
+ * Modify Telugu length marks (ccc=84, ccc=91).
+ * These are the only matras in the main Indic scripts range that have
+ * a non-zero ccc. That makes them reorder with the Halant that is
+ * ccc=9. Just zero them, we don't need them in our Indic shaper.
+ */
+#define HB_MODIFIED_COMBINING_CLASS_CCC84 0 /* length mark */
+#define HB_MODIFIED_COMBINING_CLASS_CCC91 0 /* ai length mark */
+
+/* Thai
+ *
+ * Modify U+0E38 and U+0E39 (ccc=103) to be reordered before U+0E3A (ccc=9).
+ * Assign 3, which is unassigned otherwise.
+ * Uniscribe does this reordering too.
+ */
+#define HB_MODIFIED_COMBINING_CLASS_CCC103 3 /* sara u / sara uu */
+#define HB_MODIFIED_COMBINING_CLASS_CCC107 107 /* mai * */
+
+/* Lao */
+#define HB_MODIFIED_COMBINING_CLASS_CCC118 118 /* sign u / sign uu */
+#define HB_MODIFIED_COMBINING_CLASS_CCC122 122 /* mai * */
+
+/* Tibetan
+ *
+ * In case of multiple vowel-signs, use u first (but after achung)
+ * this allows Dzongkha multi-vowel shortcuts to render correctly
+ */
+#define HB_MODIFIED_COMBINING_CLASS_CCC129 129 /* sign aa */
+#define HB_MODIFIED_COMBINING_CLASS_CCC130 132 /* sign i */
+#define HB_MODIFIED_COMBINING_CLASS_CCC132 131 /* sign u */
+
+/* Misc */
+
+#define HB_UNICODE_GENERAL_CATEGORY_IS_MARK(gen_cat) \
+ (FLAG_UNSAFE (gen_cat) & \
+ (FLAG (HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK) | \
+ FLAG (HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) | \
+ FLAG (HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)))
+
+
+/*
+ * Ranges, used for bsearch tables.
+ */
+
+struct hb_unicode_range_t
+{
+ static int
+ cmp (const void *_key, const void *_item)
+ {
+ hb_codepoint_t cp = *((hb_codepoint_t *) _key);
+ const hb_unicode_range_t *range = (hb_unicode_range_t *) _item;
+
+ if (cp < range->start)
+ return -1;
+ else if (cp <= range->end)
+ return 0;
+ else
+ return +1;
+ }
+
+ hb_codepoint_t start;
+ hb_codepoint_t end;
+};
+
+/*
+ * Emoji.
+ */
+
+HB_INTERNAL bool
+_hb_unicode_is_emoji_Extended_Pictographic (hb_codepoint_t cp);
+
+
+#endif /* HB_UNICODE_HH */