106 lines
2.3 KiB
Plaintext
106 lines
2.3 KiB
Plaintext
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/*
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* Copyright © 2011 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Behdad Esfahbod
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*/
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#ifndef HB_OT_SHAPE_COMPLEX_INDIC_MACHINE_HH
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#define HB_OT_SHAPE_COMPLEX_INDIC_MACHINE_HH
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#include "hb-private.hh"
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HB_BEGIN_DECLS
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%%{
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machine indic_syllable_machine;
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alphtype unsigned char;
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write data;
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}%%
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%%{
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X = 0;
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C = 1;
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Ra = 2;
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V = 3;
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N = 4;
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H = 5;
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ZWNJ = 6;
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ZWJ = 7;
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M = 8;
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SM = 9;
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VD = 10;
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A = 11;
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NBSP = 12;
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c = C | Ra;
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z = ZWJ|ZWNJ;
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matra_group = M N? H?;
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syllable_tail = SM? (VD VD?)?;
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action matched_syllable {
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//fprintf (stderr, "Syll %d\n", p);
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}
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consonant_syllable = (c.N? (z.H|H.z?))* c.N? A? (H.z? | matra_group*)? syllable_tail %(matched_syllable);
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vowel_syllable = (Ra H)? V N? (z.H.c | ZWJ.c)? matra_group* syllable_tail;
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standalone_cluster = (Ra H)? NBSP N? (z? H c)? matra_group* syllable_tail;
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non_indic = X;
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syllable =
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consonant_syllable
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| vowel_syllable
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| standalone_cluster
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| non_indic
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;
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main := syllable**;
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}%%
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#include <stdio.h>
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#include <string.h>
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static void
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find_syllables (hb_ot_shape_context_t *c)
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{
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unsigned int p, pe, eof;
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int cs;
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%%{
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write init;
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getkey c->buffer->info[p].indic_category();
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}%%
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p = 0;
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pe = eof = c->buffer->len;
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%%{
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write exec;
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}%%
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}
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HB_END_DECLS
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#endif /* HB_OT_SHAPE_COMPLEX_INDIC_MACHINE_HH */
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