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harfbuzz/src/hb-ot-shape-complex-vowel-c...

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/* == Start of generated functions == */
/*
* The following functions are generated by running:
*
* ./gen-vowel-constraints.py use Scripts.txt
*
* on files with these headers:
*
* # Copied from https://docs.microsoft.com/en-us/typography/script-development/use
* # On October 23, 2018; with documentd dated 02/07/2018.
*
* # Scripts-12.0.0.txt
* # Date: 2019-01-28, 22:16:47 GMT
*/
#include "hb-ot-shape-complex-vowel-constraints.hh"
static void
_output_dotted_circle (hb_buffer_t *buffer)
{
hb_glyph_info_t &dottedcircle = buffer->output_glyph (0x25CCu);
_hb_glyph_info_reset_continuation (&dottedcircle);
}
static void
_output_with_dotted_circle (hb_buffer_t *buffer)
{
_output_dotted_circle (buffer);
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_SHAPE_COMPLEX_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
*/
bool processed = false;
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)
{
buffer->next_glyph ();
buffer->next_glyph ();
_output_dotted_circle (buffer);
}
break;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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:
matched = true;
break;
}
break;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
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;
}
buffer->next_glyph ();
if (matched) _output_with_dotted_circle (buffer);
}
processed = true;
break;
default:
break;
}
if (processed)
{
if (buffer->idx < count)
buffer->next_glyph ();
buffer->swap_buffers ();
}
}
/* == End of generated functions == */