1use super::buffer::{hb_buffer_t, HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE};
2use super::{hb_font_t, hb_glyph_info_t};
3use crate::BufferFlags;
4
5pub fn insert_dotted_circles(
6 face: &hb_font_t,
7 buffer: &mut hb_buffer_t,
8 broken_syllable_type: u8,
9 dottedcircle_category: u8,
10 repha_category: Option<u8>,
11 dottedcircle_position: Option<u8>,
12) -> bool {
13 if buffer
14 .flags
15 .contains(BufferFlags::DO_NOT_INSERT_DOTTED_CIRCLE)
16 {
17 return false;
18 }
19
20 if (buffer.scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE) == 0 {
21 return false;
22 }
23
24 let dottedcircle_glyph = match face.get_nominal_glyph(0x25CC) {
25 Some(g) => g.0 as u32,
26 None => return false,
27 };
28
29 let mut dottedcircle = hb_glyph_info_t {
30 glyph_id: 0x25CC,
31 ..hb_glyph_info_t::default()
32 };
33 dottedcircle.set_ot_shaper_var_u8_category(dottedcircle_category);
34 if let Some(dottedcircle_position) = dottedcircle_position {
35 dottedcircle.set_ot_shaper_var_u8_auxiliary(dottedcircle_position);
36 }
37 dottedcircle.glyph_id = dottedcircle_glyph;
38
39 buffer.clear_output();
40
41 buffer.idx = 0;
42 let mut last_syllable = 0;
43 while buffer.idx < buffer.len {
44 let syllable = buffer.cur(0).syllable();
45 if last_syllable != syllable && (syllable & 0x0F) == broken_syllable_type {
46 last_syllable = syllable;
47
48 let mut ginfo = dottedcircle;
49 ginfo.cluster = buffer.cur(0).cluster;
50 ginfo.mask = buffer.cur(0).mask;
51 ginfo.set_syllable(buffer.cur(0).syllable());
52
53 // Insert dottedcircle after possible Repha.
54 if let Some(repha_category) = repha_category {
55 while buffer.idx < buffer.len
56 && last_syllable == buffer.cur(0).syllable()
57 && buffer.cur(0).ot_shaper_var_u8_category() == repha_category
58 {
59 buffer.next_glyph();
60 }
61 }
62
63 buffer.output_info(ginfo);
64 } else {
65 buffer.next_glyph();
66 }
67 }
68
69 buffer.sync();
70
71 true
72}
73