1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/harfbuzz/src/hb-ot-shape-complex-sea-machine.rl Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,102 @@
1.4 +/*
1.5 + * Copyright © 2011,2012,2013 Google, Inc.
1.6 + *
1.7 + * This is part of HarfBuzz, a text shaping library.
1.8 + *
1.9 + * Permission is hereby granted, without written agreement and without
1.10 + * license or royalty fees, to use, copy, modify, and distribute this
1.11 + * software and its documentation for any purpose, provided that the
1.12 + * above copyright notice and the following two paragraphs appear in
1.13 + * all copies of this software.
1.14 + *
1.15 + * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
1.16 + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
1.17 + * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
1.18 + * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
1.19 + * DAMAGE.
1.20 + *
1.21 + * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
1.22 + * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
1.23 + * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
1.24 + * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
1.25 + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
1.26 + *
1.27 + * Google Author(s): Behdad Esfahbod
1.28 + */
1.29 +
1.30 +#ifndef HB_OT_SHAPE_COMPLEX_SEA_MACHINE_HH
1.31 +#define HB_OT_SHAPE_COMPLEX_SEA_MACHINE_HH
1.32 +
1.33 +#include "hb-private.hh"
1.34 +
1.35 +%%{
1.36 + machine sea_syllable_machine;
1.37 + alphtype unsigned char;
1.38 + write data;
1.39 +}%%
1.40 +
1.41 +%%{
1.42 +
1.43 +# Same order as enum sea_category_t. Not sure how to avoid duplication.
1.44 +C = 1;
1.45 +GB = 12; # Generic Base
1.46 +H = 4; # Halant
1.47 +IV = 2; # Independent Vowel
1.48 +MR = 22; # Medial Ra
1.49 +CM = 17; # Consonant Medial
1.50 +VAbv = 26;
1.51 +VBlw = 27;
1.52 +VPre = 28;
1.53 +VPst = 29;
1.54 +T = 3; # Tone Marks
1.55 +A = 10; # Anusvara
1.56 +
1.57 +syllable_tail = (VPre|VAbv|VBlw|VPst|H.C|CM|MR|T|A)*;
1.58 +
1.59 +consonant_syllable = (C|IV|GB) syllable_tail;
1.60 +broken_cluster = syllable_tail;
1.61 +other = any;
1.62 +
1.63 +main := |*
1.64 + consonant_syllable => { found_syllable (consonant_syllable); };
1.65 + broken_cluster => { found_syllable (broken_cluster); };
1.66 + other => { found_syllable (non_sea_cluster); };
1.67 +*|;
1.68 +
1.69 +
1.70 +}%%
1.71 +
1.72 +#define found_syllable(syllable_type) \
1.73 + HB_STMT_START { \
1.74 + if (0) fprintf (stderr, "syllable %d..%d %s\n", last, p+1, #syllable_type); \
1.75 + for (unsigned int i = last; i < p+1; i++) \
1.76 + info[i].syllable() = (syllable_serial << 4) | syllable_type; \
1.77 + last = p+1; \
1.78 + syllable_serial++; \
1.79 + if (unlikely (syllable_serial == 16)) syllable_serial = 1; \
1.80 + } HB_STMT_END
1.81 +
1.82 +static void
1.83 +find_syllables (hb_buffer_t *buffer)
1.84 +{
1.85 + unsigned int p, pe, eof, ts HB_UNUSED, te HB_UNUSED, act HB_UNUSED;
1.86 + int cs;
1.87 + hb_glyph_info_t *info = buffer->info;
1.88 + %%{
1.89 + write init;
1.90 + getkey info[p].sea_category();
1.91 + }%%
1.92 +
1.93 + p = 0;
1.94 + pe = eof = buffer->len;
1.95 +
1.96 + unsigned int last = 0;
1.97 + unsigned int syllable_serial = 1;
1.98 + %%{
1.99 + write exec;
1.100 + }%%
1.101 +}
1.102 +
1.103 +#undef found_syllable
1.104 +
1.105 +#endif /* HB_OT_SHAPE_COMPLEX_SEA_MACHINE_HH */
