1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/harfbuzz/src/hb-ot-shape-complex-hebrew.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,172 @@
1.4 +/*
1.5 + * Copyright © 2010,2012 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 +#include "hb-ot-shape-complex-private.hh"
1.31 +
1.32 +
1.33 +static bool
1.34 +compose_hebrew (const hb_ot_shape_normalize_context_t *c,
1.35 + hb_codepoint_t a,
1.36 + hb_codepoint_t b,
1.37 + hb_codepoint_t *ab)
1.38 +{
1.39 + /* Hebrew presentation-form shaping.
1.40 + * https://bugzilla.mozilla.org/show_bug.cgi?id=728866
1.41 + * Hebrew presentation forms with dagesh, for characters 0x05D0..0x05EA;
1.42 + * Note that some letters do not have a dagesh presForm encoded.
1.43 + */
1.44 + static const hb_codepoint_t sDageshForms[0x05EA - 0x05D0 + 1] = {
1.45 + 0xFB30, /* ALEF */
1.46 + 0xFB31, /* BET */
1.47 + 0xFB32, /* GIMEL */
1.48 + 0xFB33, /* DALET */
1.49 + 0xFB34, /* HE */
1.50 + 0xFB35, /* VAV */
1.51 + 0xFB36, /* ZAYIN */
1.52 + 0x0000, /* HET */
1.53 + 0xFB38, /* TET */
1.54 + 0xFB39, /* YOD */
1.55 + 0xFB3A, /* FINAL KAF */
1.56 + 0xFB3B, /* KAF */
1.57 + 0xFB3C, /* LAMED */
1.58 + 0x0000, /* FINAL MEM */
1.59 + 0xFB3E, /* MEM */
1.60 + 0x0000, /* FINAL NUN */
1.61 + 0xFB40, /* NUN */
1.62 + 0xFB41, /* SAMEKH */
1.63 + 0x0000, /* AYIN */
1.64 + 0xFB43, /* FINAL PE */
1.65 + 0xFB44, /* PE */
1.66 + 0x0000, /* FINAL TSADI */
1.67 + 0xFB46, /* TSADI */
1.68 + 0xFB47, /* QOF */
1.69 + 0xFB48, /* RESH */
1.70 + 0xFB49, /* SHIN */
1.71 + 0xFB4A /* TAV */
1.72 + };
1.73 +
1.74 + bool found = c->unicode->compose (a, b, ab);
1.75 +
1.76 + if (!found)
1.77 + {
1.78 + /* Special-case Hebrew presentation forms that are excluded from
1.79 + * standard normalization, but wanted for old fonts. */
1.80 + switch (b) {
1.81 + case 0x05B4: /* HIRIQ */
1.82 + if (a == 0x05D9) { /* YOD */
1.83 + *ab = 0xFB1D;
1.84 + found = true;
1.85 + }
1.86 + break;
1.87 + case 0x05B7: /* patah */
1.88 + if (a == 0x05F2) { /* YIDDISH YOD YOD */
1.89 + *ab = 0xFB1F;
1.90 + found = true;
1.91 + } else if (a == 0x05D0) { /* ALEF */
1.92 + *ab = 0xFB2E;
1.93 + found = true;
1.94 + }
1.95 + break;
1.96 + case 0x05B8: /* QAMATS */
1.97 + if (a == 0x05D0) { /* ALEF */
1.98 + *ab = 0xFB2F;
1.99 + found = true;
1.100 + }
1.101 + break;
1.102 + case 0x05B9: /* HOLAM */
1.103 + if (a == 0x05D5) { /* VAV */
1.104 + *ab = 0xFB4B;
1.105 + found = true;
1.106 + }
1.107 + break;
1.108 + case 0x05BC: /* DAGESH */
1.109 + if (a >= 0x05D0 && a <= 0x05EA) {
1.110 + *ab = sDageshForms[a - 0x05D0];
1.111 + found = (*ab != 0);
1.112 + } else if (a == 0xFB2A) { /* SHIN WITH SHIN DOT */
1.113 + *ab = 0xFB2C;
1.114 + found = true;
1.115 + } else if (a == 0xFB2B) { /* SHIN WITH SIN DOT */
1.116 + *ab = 0xFB2D;
1.117 + found = true;
1.118 + }
1.119 + break;
1.120 + case 0x05BF: /* RAFE */
1.121 + switch (a) {
1.122 + case 0x05D1: /* BET */
1.123 + *ab = 0xFB4C;
1.124 + found = true;
1.125 + break;
1.126 + case 0x05DB: /* KAF */
1.127 + *ab = 0xFB4D;
1.128 + found = true;
1.129 + break;
1.130 + case 0x05E4: /* PE */
1.131 + *ab = 0xFB4E;
1.132 + found = true;
1.133 + break;
1.134 + }
1.135 + break;
1.136 + case 0x05C1: /* SHIN DOT */
1.137 + if (a == 0x05E9) { /* SHIN */
1.138 + *ab = 0xFB2A;
1.139 + found = true;
1.140 + } else if (a == 0xFB49) { /* SHIN WITH DAGESH */
1.141 + *ab = 0xFB2C;
1.142 + found = true;
1.143 + }
1.144 + break;
1.145 + case 0x05C2: /* SIN DOT */
1.146 + if (a == 0x05E9) { /* SHIN */
1.147 + *ab = 0xFB2B;
1.148 + found = true;
1.149 + } else if (a == 0xFB49) { /* SHIN WITH DAGESH */
1.150 + *ab = 0xFB2D;
1.151 + found = true;
1.152 + }
1.153 + break;
1.154 + }
1.155 + }
1.156 +
1.157 + return found;
1.158 +}
1.159 +
1.160 +
1.161 +const hb_ot_complex_shaper_t _hb_ot_complex_shaper_hebrew =
1.162 +{
1.163 + "hebrew",
1.164 + NULL, /* collect_features */
1.165 + NULL, /* override_features */
1.166 + NULL, /* data_create */
1.167 + NULL, /* data_destroy */
1.168 + NULL, /* preprocess_text */
1.169 + HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
1.170 + NULL, /* decompose */
1.171 + compose_hebrew,
1.172 + NULL, /* setup_masks */
1.173 + HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT,
1.174 + true, /* fallback_position */
1.175 +};
