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[Indic] Better categorize Register Shifters and Khmer Various signs 

Down another 500 or so Khmer failures!
This commit is contained in:
Behdad Esfahbod 2012-07-17 17:53:03 -04:00
parent 39b17837b4
commit 25bc489498
6 changed files with 24 additions and 12 deletions
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14
src/hb-ot-shape-complex-indic-machine.rl
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@ -55,16 +55,16 @@ DOTTEDCIRCLE = 13;
RS = 14;
Coeng = 15;
c = C | Ra;
n = (N.N? | ZWNJ?.RS);
z = ZWJ|ZWNJ;
h = H | Coeng;
matra_group = (M | RS) N? H?;
syllable_tail = SM? (VD VD?)?;
c = C | Ra; # is_consonant
n = (N.N? | ZWNJ?.RS); # is_consonant_modifier
z = ZWJ|ZWNJ; # is_joiner
h = H | Coeng; # is_halant_or_coeng
matra_group = M.N?.H?;
syllable_tail = SM? (Coeng (c|V))? (VD VD?)?;
place_holder = NBSP | DOTTEDCIRCLE;
consonant_syllable = (c.n? (h.z?|z.h))* c.n? A? (h.z? | matra_group*)? (Coeng (c|V))? syllable_tail;
consonant_syllable = (c.n? (h.z?|z.h))* c.n? A? (h.z? | matra_group*)? syllable_tail;
vowel_syllable = (Ra H)? V.n? (z?.h.c | ZWJ.c)* matra_group* syllable_tail;
standalone_cluster = (Ra H)? place_holder.n? (z? h c)* matra_group* syllable_tail;
other = any;

2
src/hb-ot-shape-complex-indic-private.hh
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@ -59,7 +59,7 @@ enum indic_category_t {
OT_A,
OT_NBSP,
OT_DOTTEDCIRCLE, /* Not in the spec, but special in Uniscribe. /Very very/ special! */
OT_RS, /* Register Shifter (and other marks), used in Khmer OT spec */
OT_RS, /* Register Shifter, used in Khmer OT spec */
OT_Coeng
};

8
src/hb-ot-shape-complex-indic.cc
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@ -275,8 +275,8 @@ _hb_ot_shape_complex_setup_masks_indic (hb_ot_map_t *map HB_UNUSED,
info.indic_category() = OT_VD;
if (info.indic_category() == OT_X &&
unlikely (hb_in_range<hb_codepoint_t> (info.codepoint, 0x17CB, 0x17D0)))
info.indic_category() = OT_RS;
unlikely (hb_in_range<hb_codepoint_t> (info.codepoint, 0x17CB, 0x17D2))) /* Khmer Various signs */
info.indic_category() = OT_N;
/* Khmer Virama is different since it can be used to form a final consonant. */
if (unlikely (info.codepoint == 0x17D2))
@ -488,7 +488,7 @@ initial_reordering_consonant_syllable (const hb_ot_map_t *map, hb_buffer_t *buff
{
/* Please update the Uniscribe branch when touching this! */
for (unsigned int i = start + 1; i < end; i++)
if ((FLAG (info[i].indic_category()) & (FLAG (OT_ZWNJ) | FLAG (OT_ZWJ) | FLAG (OT_N) | FLAG (OT_H))))
if ((FLAG (info[i].indic_category()) & (FLAG (OT_ZWNJ) | FLAG (OT_ZWJ) | FLAG (OT_N) | FLAG (OT_RS) | FLAG (OT_H))))
info[i].indic_position() = info[i - 1].indic_position();
} else {
/*
@ -497,7 +497,7 @@ initial_reordering_consonant_syllable (const hb_ot_map_t *map, hb_buffer_t *buff
*/
/* Please update the non-Uniscribe branch when touching this! */
for (unsigned int i = start + 1; i < end; i++)
if ((FLAG (info[i].indic_category()) & (FLAG (OT_ZWNJ) | FLAG (OT_ZWJ) | FLAG (OT_N) | FLAG (OT_H)))) {
if ((FLAG (info[i].indic_category()) & (FLAG (OT_ZWNJ) | FLAG (OT_ZWJ) | FLAG (OT_N) | FLAG (OT_RS) | FLAG (OT_H)))) {
info[i].indic_position() = info[i - 1].indic_position();
if (info[i].indic_category() == OT_H && info[i].indic_position() == POS_PRE_M)
for (unsigned int j = i; j > start; j--)

2
test/shaping/texts/in-tree/shaper-indic/south-east-asian/script-khmer/misc/MANIFEST
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@ -1 +1,3 @@
misc.txt
other-marks-invalid.txt
other-marks.txt

4
test/shaping/texts/in-tree/shaper-indic/south-east-asian/script-khmer/misc/other-marks-invalid.txt Normal file
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@ -0,0 +1,4 @@
ព់្ឈា
ព្ឈា៉
ព្ឈា៌
ព្ឈ៌ា

6
test/shaping/texts/in-tree/shaper-indic/south-east-asian/script-khmer/misc/other-marks.txt Normal file
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@ -0,0 +1,6 @@
ព្ឈា
ព្ឈា់
ព្ឈ់ា
ព្ឈ៉ា
ព៉្ឈា
ព៌្ឈា