gfx/harfbuzz/src/hb-ot-shape-complex-hebrew.cc@6474c204b198
gfx/harfbuzz/src/hb-ot-shape-complex-hebrew.cc
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*
2 * Copyright © 2010,2012 Google, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Google Author(s): Behdad Esfahbod
25 */
27 #include "hb-ot-shape-complex-private.hh"
30 static bool
31 compose_hebrew (const hb_ot_shape_normalize_context_t *c,
32 hb_codepoint_t a,
33 hb_codepoint_t b,
34 hb_codepoint_t *ab)
35 {
36 /* Hebrew presentation-form shaping.
37 * https://bugzilla.mozilla.org/show_bug.cgi?id=728866
38 * Hebrew presentation forms with dagesh, for characters 0x05D0..0x05EA;
39 * Note that some letters do not have a dagesh presForm encoded.
40 */
41 static const hb_codepoint_t sDageshForms[0x05EA - 0x05D0 + 1] = {
42 0xFB30, /* ALEF */
43 0xFB31, /* BET */
44 0xFB32, /* GIMEL */
45 0xFB33, /* DALET */
46 0xFB34, /* HE */
47 0xFB35, /* VAV */
48 0xFB36, /* ZAYIN */
49 0x0000, /* HET */
50 0xFB38, /* TET */
51 0xFB39, /* YOD */
52 0xFB3A, /* FINAL KAF */
53 0xFB3B, /* KAF */
54 0xFB3C, /* LAMED */
55 0x0000, /* FINAL MEM */
56 0xFB3E, /* MEM */
57 0x0000, /* FINAL NUN */
58 0xFB40, /* NUN */
59 0xFB41, /* SAMEKH */
60 0x0000, /* AYIN */
61 0xFB43, /* FINAL PE */
62 0xFB44, /* PE */
63 0x0000, /* FINAL TSADI */
64 0xFB46, /* TSADI */
65 0xFB47, /* QOF */
66 0xFB48, /* RESH */
67 0xFB49, /* SHIN */
68 0xFB4A /* TAV */
69 };
71 bool found = c->unicode->compose (a, b, ab);
73 if (!found)
74 {
75 /* Special-case Hebrew presentation forms that are excluded from
76 * standard normalization, but wanted for old fonts. */
77 switch (b) {
78 case 0x05B4: /* HIRIQ */
79 if (a == 0x05D9) { /* YOD */
80 *ab = 0xFB1D;
81 found = true;
82 }
83 break;
84 case 0x05B7: /* patah */
85 if (a == 0x05F2) { /* YIDDISH YOD YOD */
86 *ab = 0xFB1F;
87 found = true;
88 } else if (a == 0x05D0) { /* ALEF */
89 *ab = 0xFB2E;
90 found = true;
91 }
92 break;
93 case 0x05B8: /* QAMATS */
94 if (a == 0x05D0) { /* ALEF */
95 *ab = 0xFB2F;
96 found = true;
97 }
98 break;
99 case 0x05B9: /* HOLAM */
100 if (a == 0x05D5) { /* VAV */
101 *ab = 0xFB4B;
102 found = true;
103 }
104 break;
105 case 0x05BC: /* DAGESH */
106 if (a >= 0x05D0 && a <= 0x05EA) {
107 *ab = sDageshForms[a - 0x05D0];
108 found = (*ab != 0);
109 } else if (a == 0xFB2A) { /* SHIN WITH SHIN DOT */
110 *ab = 0xFB2C;
111 found = true;
112 } else if (a == 0xFB2B) { /* SHIN WITH SIN DOT */
113 *ab = 0xFB2D;
114 found = true;
115 }
116 break;
117 case 0x05BF: /* RAFE */
118 switch (a) {
119 case 0x05D1: /* BET */
120 *ab = 0xFB4C;
121 found = true;
122 break;
123 case 0x05DB: /* KAF */
124 *ab = 0xFB4D;
125 found = true;
126 break;
127 case 0x05E4: /* PE */
128 *ab = 0xFB4E;
129 found = true;
130 break;
131 }
132 break;
133 case 0x05C1: /* SHIN DOT */
134 if (a == 0x05E9) { /* SHIN */
135 *ab = 0xFB2A;
136 found = true;
137 } else if (a == 0xFB49) { /* SHIN WITH DAGESH */
138 *ab = 0xFB2C;
139 found = true;
140 }
141 break;
142 case 0x05C2: /* SIN DOT */
143 if (a == 0x05E9) { /* SHIN */
144 *ab = 0xFB2B;
145 found = true;
146 } else if (a == 0xFB49) { /* SHIN WITH DAGESH */
147 *ab = 0xFB2D;
148 found = true;
149 }
150 break;
151 }
152 }
154 return found;
155 }
158 const hb_ot_complex_shaper_t _hb_ot_complex_shaper_hebrew =
159 {
160 "hebrew",
161 NULL, /* collect_features */
162 NULL, /* override_features */
163 NULL, /* data_create */
164 NULL, /* data_destroy */
165 NULL, /* preprocess_text */
166 HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
167 NULL, /* decompose */
168 compose_hebrew,
169 NULL, /* setup_masks */
170 HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT,
171 true, /* fallback_position */
172 };
