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-rw-r--r--thirdparty/harfbuzz/src/hb-ot-shaper-vowel-constraints.cc443
1 files changed, 443 insertions, 0 deletions
diff --git a/thirdparty/harfbuzz/src/hb-ot-shaper-vowel-constraints.cc b/thirdparty/harfbuzz/src/hb-ot-shaper-vowel-constraints.cc
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index 0000000000..cb4db4a8b2
--- /dev/null
+++ b/thirdparty/harfbuzz/src/hb-ot-shaper-vowel-constraints.cc
@@ -0,0 +1,443 @@
+/* == Start of generated functions == */
+/*
+ * The following functions are generated by running:
+ *
+ * ./gen-vowel-constraints.py ms-use/IndicShapingInvalidCluster.txt Scripts.txt
+ *
+ * on files with these headers:
+ *
+ * # IndicShapingInvalidCluster.txt
+ * # Date: 2015-03-12, 21:17:00 GMT [AG]
+ * # Date: 2019-11-08, 23:22:00 GMT [AG]
+ *
+ * # Scripts-15.0.0.txt
+ * # Date: 2022-04-26, 23:15:02 GMT
+ */
+
+#include "hb.hh"
+
+#ifndef HB_NO_OT_SHAPE
+
+#include "hb-ot-shaper-vowel-constraints.hh"
+
+static void
+_output_dotted_circle (hb_buffer_t *buffer)
+{
+ (void) buffer->output_glyph (0x25CCu);
+ _hb_glyph_info_reset_continuation (&buffer->prev());
+}
+
+static void
+_output_with_dotted_circle (hb_buffer_t *buffer)
+{
+ _output_dotted_circle (buffer);
+ (void) buffer->next_glyph ();
+}
+
+void
+_hb_preprocess_text_vowel_constraints (const hb_ot_shape_plan_t *plan HB_UNUSED,
+ hb_buffer_t *buffer,
+ hb_font_t *font HB_UNUSED)
+{
+#ifdef HB_NO_OT_SHAPER_VOWEL_CONSTRAINTS
+ return;
+#endif
+ if (buffer->flags & HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE)
+ return;
+
+ /* UGLY UGLY UGLY business of adding dotted-circle in the middle of
+ * vowel-sequences that look like another vowel. Data for each script
+ * collected from the USE script development spec.
+ *
+ * https://github.com/harfbuzz/harfbuzz/issues/1019
+ */
+ buffer->clear_output ();
+ unsigned int count = buffer->len;
+ switch ((unsigned) buffer->props.script)
+ {
+ case HB_SCRIPT_DEVANAGARI:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0905u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x093Au: case 0x093Bu: case 0x093Eu: case 0x0945u:
+ case 0x0946u: case 0x0949u: case 0x094Au: case 0x094Bu:
+ case 0x094Cu: case 0x094Fu: case 0x0956u: case 0x0957u:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x0906u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x093Au: case 0x0945u: case 0x0946u: case 0x0947u:
+ case 0x0948u:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x0909u:
+ matched = 0x0941u == buffer->cur (1).codepoint;
+ break;
+ case 0x090Fu:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0945u: case 0x0946u: case 0x0947u:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x0930u:
+ if (0x094Du == buffer->cur (1).codepoint &&
+ buffer->idx + 2 < count &&
+ 0x0907u == buffer->cur (2).codepoint)
+ {
+ (void) buffer->next_glyph ();
+ matched = true;
+ }
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_BENGALI:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0985u:
+ matched = 0x09BEu == buffer->cur (1).codepoint;
+ break;
+ case 0x098Bu:
+ matched = 0x09C3u == buffer->cur (1).codepoint;
+ break;
+ case 0x098Cu:
+ matched = 0x09E2u == buffer->cur (1).codepoint;
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_GURMUKHI:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0A05u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0A3Eu: case 0x0A48u: case 0x0A4Cu:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x0A72u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0A3Fu: case 0x0A40u: case 0x0A47u:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x0A73u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0A41u: case 0x0A42u: case 0x0A4Bu:
+ matched = true;
+ break;
+ }
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_GUJARATI:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0A85u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0ABEu: case 0x0AC5u: case 0x0AC7u: case 0x0AC8u:
+ case 0x0AC9u: case 0x0ACBu: case 0x0ACCu:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x0AC5u:
+ matched = 0x0ABEu == buffer->cur (1).codepoint;
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_ORIYA:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0B05u:
+ matched = 0x0B3Eu == buffer->cur (1).codepoint;
+ break;
+ case 0x0B0Fu: case 0x0B13u:
+ matched = 0x0B57u == buffer->cur (1).codepoint;
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_TAMIL:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ if (0x0B85u == buffer->cur ().codepoint &&
+ 0x0BC2u == buffer->cur (1).codepoint)
+ {
+ matched = true;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_TELUGU:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0C12u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0C4Cu: case 0x0C55u:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x0C3Fu: case 0x0C46u: case 0x0C4Au:
+ matched = 0x0C55u == buffer->cur (1).codepoint;
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_KANNADA:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0C89u: case 0x0C8Bu:
+ matched = 0x0CBEu == buffer->cur (1).codepoint;
+ break;
+ case 0x0C92u:
+ matched = 0x0CCCu == buffer->cur (1).codepoint;
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_MALAYALAM:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0D07u: case 0x0D09u:
+ matched = 0x0D57u == buffer->cur (1).codepoint;
+ break;
+ case 0x0D0Eu:
+ matched = 0x0D46u == buffer->cur (1).codepoint;
+ break;
+ case 0x0D12u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0D3Eu: case 0x0D57u:
+ matched = true;
+ break;
+ }
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_SINHALA:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x0D85u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0DCFu: case 0x0DD0u: case 0x0DD1u:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x0D8Bu: case 0x0D8Fu: case 0x0D94u:
+ matched = 0x0DDFu == buffer->cur (1).codepoint;
+ break;
+ case 0x0D8Du:
+ matched = 0x0DD8u == buffer->cur (1).codepoint;
+ break;
+ case 0x0D91u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x0DCAu: case 0x0DD9u: case 0x0DDAu: case 0x0DDCu:
+ case 0x0DDDu: case 0x0DDEu:
+ matched = true;
+ break;
+ }
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_BRAHMI:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x11005u:
+ matched = 0x11038u == buffer->cur (1).codepoint;
+ break;
+ case 0x1100Bu:
+ matched = 0x1103Eu == buffer->cur (1).codepoint;
+ break;
+ case 0x1100Fu:
+ matched = 0x11042u == buffer->cur (1).codepoint;
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_KHUDAWADI:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x112B0u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x112E0u: case 0x112E5u: case 0x112E6u: case 0x112E7u:
+ case 0x112E8u:
+ matched = true;
+ break;
+ }
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_TIRHUTA:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x11481u:
+ matched = 0x114B0u == buffer->cur (1).codepoint;
+ break;
+ case 0x1148Bu: case 0x1148Du:
+ matched = 0x114BAu == buffer->cur (1).codepoint;
+ break;
+ case 0x114AAu:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x114B5u: case 0x114B6u:
+ matched = true;
+ break;
+ }
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_MODI:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x11600u: case 0x11601u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x11639u: case 0x1163Au:
+ matched = true;
+ break;
+ }
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ case HB_SCRIPT_TAKRI:
+ for (buffer->idx = 0; buffer->idx + 1 < count && buffer->successful;)
+ {
+ bool matched = false;
+ switch (buffer->cur ().codepoint)
+ {
+ case 0x11680u:
+ switch (buffer->cur (1).codepoint)
+ {
+ case 0x116ADu: case 0x116B4u: case 0x116B5u:
+ matched = true;
+ break;
+ }
+ break;
+ case 0x11686u:
+ matched = 0x116B2u == buffer->cur (1).codepoint;
+ break;
+ }
+ (void) buffer->next_glyph ();
+ if (matched) _output_with_dotted_circle (buffer);
+ }
+ break;
+
+ default:
+ break;
+ }
+ buffer->sync ();
+}
+
+
+#endif
+/* == End of generated functions == */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 05:37:22 +0000