1867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod/* 227aba594c90b4444c35273a38f5fedc8e09d9a88Behdad Esfahbod * Copyright © 2011,2012 Google, Inc. 3867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * 4867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * This is part of HarfBuzz, a text shaping library. 5867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * 6867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * Permission is hereby granted, without written agreement and without 7867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * license or royalty fees, to use, copy, modify, and distribute this 8867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * software and its documentation for any purpose, provided that the 9867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * above copyright notice and the following two paragraphs appear in 10867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * all copies of this software. 11867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * 12867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR 13867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 14867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN 15867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 16867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * DAMAGE. 17867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * 18867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, 19867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 20867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 21867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO 22867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. 23867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * 24867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod * Google Author(s): Behdad Esfahbod 25867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod */ 26867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 27867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod#ifndef HB_OT_SHAPE_COMPLEX_INDIC_MACHINE_HH 28867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod#define HB_OT_SHAPE_COMPLEX_INDIC_MACHINE_HH 29867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 30867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod#include "hb-private.hh" 31867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 32867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod%%{ 33867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod machine indic_syllable_machine; 34867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod alphtype unsigned char; 35867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod write data; 36867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod}%% 37867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 38867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod%%{ 39867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 40c7fe56a1d5d3e969b6ec51cd9ecd471706a19568Behdad Esfahbod# Same order as enum indic_category_t. Not sure how to avoid duplication. 41867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad EsfahbodX = 0; 42867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad EsfahbodC = 1; 43db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodV = 2; 44db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodN = 3; 45db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodH = 4; 46db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodZWNJ = 5; 47db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodZWJ = 6; 48db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodM = 7; 49db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodSM = 8; 50db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodVD = 9; 51db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodA = 10; 52db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodNBSP = 11; 53db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodDOTTEDCIRCLE = 12; 54db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodRS = 13; 55db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodCoeng = 14; 56db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodRepha = 15; 57db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad EsfahbodRa = 16; 589cac1338c4bc3e9034cbfa104291ed0329debefeBehdad EsfahbodCM = 17; 59867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 609cac1338c4bc3e9034cbfa104291ed0329debefeBehdad Esfahbodc = (C | Ra)CM*; # is_consonant 61552d19b7a11f7dff888587fce4d56d9f8e47e819Behdad Esfahbodn = ((ZWNJ?.RS)? (N.N?)?); # is_consonant_modifier 6225bc489498ef7d0beb8fe9ab663e3f0b2f52c9c2Behdad Esfahbodz = ZWJ|ZWNJ; # is_joiner 6325bc489498ef7d0beb8fe9ab663e3f0b2f52c9c2Behdad Esfahbodh = H | Coeng; # is_halant_or_coeng 64db8981f1e0e8625714568c6d0f11f0b317b11d0aBehdad Esfahbodreph = (Ra H | Repha); # possible reph 654c3691d2a32ca7e54a54f7c08098fd96fa7af39eBehdad Esfahbod 664ed717ef61813fa16cf74f2874848e9feb81568fBehdad Esfahbodcn = c.ZWJ?.n?; 67422ecd2d3c198a36d07d409341cb82ea57c7ad6bBehdad Esfahbodforced_rakar = ZWJ H ZWJ Ra; 68dff0ece11d61978c04e839501f179a5c3077f340Behdad Esfahbodmatra_group = z{0,3}.M.N?.(H | forced_rakar)?; 69aa7141efe49991a1160489106984e95163fe2ab8Behdad Esfahbodsyllable_tail = (Coeng (cn|V))? (SM.ZWNJ?)? (VD VD?)?; 7018c06e189bd078affbb84c3bb5bb80687a227c5eBehdad Esfahbodplace_holder = NBSP | DOTTEDCIRCLE; 714ed717ef61813fa16cf74f2874848e9feb81568fBehdad Esfahbodhalant_group = (z?.h.(ZWJ.N?)?); 729e4f94a72cea6d65a6a7ba5a47db92e00dbfbb91Behdad Esfahbodfinal_halant_group = halant_group | h.ZWNJ; 73f0b8ed1b6dd9f1d2b9084c101a6fc5dee0cc22a8Behdad Esfahbodhalant_or_matra_group = (final_halant_group | (h.ZWJ)? matra_group{0,4}); 74867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 75867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 769fa052733eb93a3ce1205f63ff8f74cb295cbe99Behdad Esfahbodconsonant_syllable = Repha? (cn.halant_group){0,4} cn A? halant_or_matra_group? syllable_tail; 7773d71cc527d28fd5519c5d965c272ea1fb149a0eBehdad Esfahbodvowel_syllable = reph? V.n? (ZWJ | (halant_group.cn){0,4} halant_or_matra_group? syllable_tail); 789fa052733eb93a3ce1205f63ff8f74cb295cbe99Behdad Esfahbodstandalone_cluster = reph? place_holder.n? (halant_group.cn){0,4} halant_or_matra_group? syllable_tail; 79596740db04e7c1dadae0d8be6e401089fcaffc2dBehdad Esfahbodbroken_cluster = reph? n? (halant_group.cn){0,4} halant_or_matra_group syllable_tail; 804be46bade26faf13f7b4d447e9cc608e183955dcBehdad Esfahbodother = any; 81867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 824be46bade26faf13f7b4d447e9cc608e183955dcBehdad Esfahbodmain := |* 83327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod consonant_syllable => { found_syllable (consonant_syllable); }; 84327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod vowel_syllable => { found_syllable (vowel_syllable); }; 85327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod standalone_cluster => { found_syllable (standalone_cluster); }; 86166b5cf7ec2d37fb54a909c437ccdec1edaf37aaBehdad Esfahbod broken_cluster => { found_syllable (broken_cluster); }; 87327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod other => { found_syllable (non_indic_cluster); }; 884be46bade26faf13f7b4d447e9cc608e183955dcBehdad Esfahbod*|; 89867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 90867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 91867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod}%% 92867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 93327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod#define found_syllable(syllable_type) \ 944be46bade26faf13f7b4d447e9cc608e183955dcBehdad Esfahbod HB_STMT_START { \ 95327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod if (0) fprintf (stderr, "syllable %d..%d %s\n", last, p+1, #syllable_type); \ 964be46bade26faf13f7b4d447e9cc608e183955dcBehdad Esfahbod for (unsigned int i = last; i < p+1; i++) \ 97327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod info[i].syllable() = (syllable_serial << 4) | syllable_type; \ 984be46bade26faf13f7b4d447e9cc608e183955dcBehdad Esfahbod last = p+1; \ 994be46bade26faf13f7b4d447e9cc608e183955dcBehdad Esfahbod syllable_serial++; \ 100327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod if (unlikely (syllable_serial == 16)) syllable_serial = 1; \ 1014be46bade26faf13f7b4d447e9cc608e183955dcBehdad Esfahbod } HB_STMT_END 102867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 103743807a3ce1b2229e5307a8aea074a7544623d8dBehdad Esfahbodstatic void 104166b5cf7ec2d37fb54a909c437ccdec1edaf37aaBehdad Esfahbodfind_syllables (hb_buffer_t *buffer) 105867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod{ 106e7562f53fe6a506d2c6d59d6688e4fa468bba462Behdad Esfahbod unsigned int p, pe, eof, ts HB_UNUSED, te HB_UNUSED, act HB_UNUSED; 107867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod int cs; 108ef24cc8c8e2478a6352c340f4611a617646de4ccBehdad Esfahbod hb_glyph_info_t *info = buffer->info; 109867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod %%{ 110867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod write init; 111ef24cc8c8e2478a6352c340f4611a617646de4ccBehdad Esfahbod getkey info[p].indic_category(); 112867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod }%% 113867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 114867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod p = 0; 11576f76812ac7cca8ac6935952a2360d5e151480faBehdad Esfahbod pe = eof = buffer->len; 116867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 117d69d5ceaa0ad30e8d4b9783507c59c6d4221de4fBehdad Esfahbod unsigned int last = 0; 118327d14ef188396006d54af976506ab6f8bb2869aBehdad Esfahbod unsigned int syllable_serial = 1; 119867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod %%{ 120867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod write exec; 121867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod }%% 122867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod} 123867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod 124867361c3ad39629a8d5b7dc48d558a1c19e37d43Behdad Esfahbod#endif /* HB_OT_SHAPE_COMPLEX_INDIC_MACHINE_HH */ 125