135 lines
3.5 KiB
Ragel
135 lines
3.5 KiB
Ragel
/*
|
|
* Copyright © 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.
|
|
*
|
|
* Google Author(s): Behdad Esfahbod
|
|
*/
|
|
|
|
#ifndef HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH
|
|
#define HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH
|
|
|
|
#include "hb.hh"
|
|
|
|
enum myanmar_syllable_type_t {
|
|
myanmar_consonant_syllable,
|
|
myanmar_punctuation_cluster,
|
|
myanmar_broken_cluster,
|
|
myanmar_non_myanmar_cluster,
|
|
};
|
|
|
|
%%{
|
|
machine myanmar_syllable_machine;
|
|
alphtype unsigned char;
|
|
write exports;
|
|
write data;
|
|
}%%
|
|
|
|
%%{
|
|
|
|
export A = 10;
|
|
export As = 18;
|
|
export C = 1;
|
|
export D = 32;
|
|
export D0 = 20;
|
|
export DB = 3;
|
|
export GB = 11;
|
|
export H = 4;
|
|
export IV = 2;
|
|
export MH = 21;
|
|
export MR = 22;
|
|
export MW = 23;
|
|
export MY = 24;
|
|
export PT = 25;
|
|
export V = 8;
|
|
export VAbv = 26;
|
|
export VBlw = 27;
|
|
export VPre = 28;
|
|
export VPst = 29;
|
|
export VS = 30;
|
|
export ZWJ = 6;
|
|
export ZWNJ = 5;
|
|
export Ra = 16;
|
|
export P = 31;
|
|
export CS = 19;
|
|
|
|
j = ZWJ|ZWNJ; # Joiners
|
|
k = (Ra As H); # Kinzi
|
|
|
|
c = C|Ra; # is_consonant
|
|
|
|
medial_group = MY? As? MR? ((MW MH? | MH) As?)?;
|
|
main_vowel_group = (VPre.VS?)* VAbv* VBlw* A* (DB As?)?;
|
|
post_vowel_group = VPst MH? As* VAbv* A* (DB As?)?;
|
|
pwo_tone_group = PT A* DB? As?;
|
|
|
|
complex_syllable_tail = As* medial_group main_vowel_group post_vowel_group* pwo_tone_group* V* j?;
|
|
syllable_tail = (H (c|IV).VS?)* (H | complex_syllable_tail);
|
|
|
|
consonant_syllable = (k|CS)? (c|IV|D|GB).VS? syllable_tail;
|
|
punctuation_cluster = P V;
|
|
broken_cluster = k? VS? syllable_tail;
|
|
other = any;
|
|
|
|
main := |*
|
|
consonant_syllable => { found_syllable (myanmar_consonant_syllable); };
|
|
j => { found_syllable (myanmar_non_myanmar_cluster); };
|
|
punctuation_cluster => { found_syllable (myanmar_punctuation_cluster); };
|
|
broken_cluster => { found_syllable (myanmar_broken_cluster); };
|
|
other => { found_syllable (myanmar_non_myanmar_cluster); };
|
|
*|;
|
|
|
|
|
|
}%%
|
|
|
|
#define found_syllable(syllable_type) \
|
|
HB_STMT_START { \
|
|
if (0) fprintf (stderr, "syllable %d..%d %s\n", ts, te, #syllable_type); \
|
|
for (unsigned int i = ts; i < te; i++) \
|
|
info[i].syllable() = (syllable_serial << 4) | syllable_type; \
|
|
syllable_serial++; \
|
|
if (unlikely (syllable_serial == 16)) syllable_serial = 1; \
|
|
} HB_STMT_END
|
|
|
|
static void
|
|
find_syllables_myanmar (hb_buffer_t *buffer)
|
|
{
|
|
unsigned int p, pe, eof, ts, te, act HB_UNUSED;
|
|
int cs;
|
|
hb_glyph_info_t *info = buffer->info;
|
|
%%{
|
|
write init;
|
|
getkey info[p].myanmar_category();
|
|
}%%
|
|
|
|
p = 0;
|
|
pe = eof = buffer->len;
|
|
|
|
unsigned int syllable_serial = 1;
|
|
%%{
|
|
write exec;
|
|
}%%
|
|
}
|
|
|
|
#undef found_syllable
|
|
|
|
#endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH */
|