1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "core/fxcrt/fx_arabic.h"
8
9 #include <algorithm>
10 #include <vector>
11
12 #include "core/fxcrt/fx_ucd.h"
13 #include "third_party/base/stl_util.h"
14
15 namespace {
16
17 const FX_ARBFORMTABLE g_FX_ArabicFormTables[] = {
18 {0xFE81, 0xFE82, 0xFE81, 0xFE82}, {0xFE83, 0xFE84, 0xFE83, 0xFE84},
19 {0xFE85, 0xFE86, 0xFE85, 0xFE86}, {0xFE87, 0xFE88, 0xFE87, 0xFE88},
20 {0xFE89, 0xFE8A, 0xFE8B, 0xFE8C}, {0xFE8D, 0xFE8E, 0xFE8D, 0xFE8E},
21 {0xFE8F, 0xFE90, 0xFE91, 0xFE92}, {0xFE93, 0xFE94, 0xFE93, 0xFE94},
22 {0xFE95, 0xFE96, 0xFE97, 0xFE98}, {0xFE99, 0xFE9A, 0xFE9B, 0xFE9C},
23 {0xFE9D, 0xFE9E, 0xFE9F, 0xFEA0}, {0xFEA1, 0xFEA2, 0xFEA3, 0xFEA4},
24 {0xFEA5, 0xFEA6, 0xFEA7, 0xFEA8}, {0xFEA9, 0xFEAA, 0xFEA9, 0xFEAA},
25 {0xFEAB, 0xFEAC, 0xFEAB, 0xFEAC}, {0xFEAD, 0xFEAE, 0xFEAD, 0xFEAE},
26 {0xFEAF, 0xFEB0, 0xFEAF, 0xFEB0}, {0xFEB1, 0xFEB2, 0xFEB3, 0xFEB4},
27 {0xFEB5, 0xFEB6, 0xFEB7, 0xFEB8}, {0xFEB9, 0xFEBA, 0xFEBB, 0xFEBC},
28 {0xFEBD, 0xFEBE, 0xFEBF, 0xFEC0}, {0xFEC1, 0xFEC2, 0xFEC3, 0xFEC4},
29 {0xFEC5, 0xFEC6, 0xFEC7, 0xFEC8}, {0xFEC9, 0xFECA, 0xFECB, 0xFECC},
30 {0xFECD, 0xFECE, 0xFECF, 0xFED0}, {0x063B, 0x063B, 0x063B, 0x063B},
31 {0x063C, 0x063C, 0x063C, 0x063C}, {0x063D, 0x063D, 0x063D, 0x063D},
32 {0x063E, 0x063E, 0x063E, 0x063E}, {0x063F, 0x063F, 0x063F, 0x063F},
33 {0x0640, 0x0640, 0x0640, 0x0640}, {0xFED1, 0xFED2, 0xFED3, 0xFED4},
34 {0xFED5, 0xFED6, 0xFED7, 0xFED8}, {0xFED9, 0xFEDA, 0xFEDB, 0xFEDC},
35 {0xFEDD, 0xFEDE, 0xFEDF, 0xFEE0}, {0xFEE1, 0xFEE2, 0xFEE3, 0xFEE4},
36 {0xFEE5, 0xFEE6, 0xFEE7, 0xFEE8}, {0xFEE9, 0xFEEA, 0xFEEB, 0xFEEC},
37 {0xFEED, 0xFEEE, 0xFEED, 0xFEEE}, {0xFEEF, 0xFEF0, 0xFBFE, 0xFBFF},
38 {0xFEF1, 0xFEF2, 0xFEF3, 0xFEF4}, {0x064B, 0x064B, 0x064B, 0x064B},
39 {0x064C, 0x064C, 0x064C, 0x064C}, {0x064D, 0x064D, 0x064D, 0x064D},
40 {0x064E, 0x064E, 0x064E, 0x064E}, {0x064F, 0x064F, 0x064F, 0x064F},
41 {0x0650, 0x0650, 0x0650, 0x0650}, {0x0651, 0x0651, 0x0651, 0x0651},
42 {0x0652, 0x0652, 0x0652, 0x0652}, {0x0653, 0x0653, 0x0653, 0x0653},
43 {0x0654, 0x0654, 0x0654, 0x0654}, {0x0655, 0x0655, 0x0655, 0x0655},
44 {0x0656, 0x0656, 0x0656, 0x0656}, {0x0657, 0x0657, 0x0657, 0x0657},
45 {0x0658, 0x0658, 0x0658, 0x0658}, {0x0659, 0x0659, 0x0659, 0x0659},
46 {0x065A, 0x065A, 0x065A, 0x065A}, {0x065B, 0x065B, 0x065B, 0x065B},
47 {0x065C, 0x065C, 0x065C, 0x065C}, {0x065D, 0x065D, 0x065D, 0x065D},
48 {0x065E, 0x065E, 0x065E, 0x065E}, {0x065F, 0x065F, 0x065F, 0x065F},
49 {0x0660, 0x0660, 0x0660, 0x0660}, {0x0661, 0x0661, 0x0661, 0x0661},
50 {0x0662, 0x0662, 0x0662, 0x0662}, {0x0663, 0x0663, 0x0663, 0x0663},
51 {0x0664, 0x0664, 0x0664, 0x0664}, {0x0665, 0x0665, 0x0665, 0x0665},
52 {0x0666, 0x0666, 0x0666, 0x0666}, {0x0667, 0x0667, 0x0667, 0x0667},
53 {0x0668, 0x0668, 0x0668, 0x0668}, {0x0669, 0x0669, 0x0669, 0x0669},
54 {0x066A, 0x066A, 0x066A, 0x066A}, {0x066B, 0x066B, 0x066B, 0x066B},
55 {0x066C, 0x066C, 0x066C, 0x066C}, {0x066D, 0x066D, 0x066D, 0x066D},
56 {0x066E, 0x066E, 0x066E, 0x066E}, {0x066F, 0x066F, 0x066F, 0x066F},
57 {0x0670, 0x0670, 0x0670, 0x0670}, {0xFB50, 0xFB51, 0xFB50, 0xFB51},
58 {0x0672, 0x0672, 0x0672, 0x0672}, {0x0673, 0x0673, 0x0673, 0x0673},
59 {0x0674, 0x0674, 0x0674, 0x0674}, {0x0675, 0x0675, 0x0675, 0x0675},
60 {0x0676, 0x0676, 0x0676, 0x0676}, {0x0677, 0x0677, 0x0677, 0x0677},
61 {0x0678, 0x0678, 0x0678, 0x0678}, {0xFB66, 0xFB67, 0xFB68, 0xFB69},
62 {0xFB5E, 0xFB5F, 0xFB60, 0xFB61}, {0xFB52, 0xFB53, 0xFB54, 0xFB55},
63 {0x067C, 0x067C, 0x067C, 0x067C}, {0x067D, 0x067D, 0x067D, 0x067D},
64 {0xFB56, 0xFB57, 0xFB58, 0xFB59}, {0xFB62, 0xFB63, 0xFB64, 0xFB65},
65 {0xFB5A, 0xFB5B, 0xFB5C, 0xFB5D}, {0x0681, 0x0681, 0x0681, 0x0681},
66 {0x0682, 0x0682, 0x0682, 0x0682}, {0xFB76, 0xFB77, 0xFB78, 0xFB79},
67 {0xFB72, 0xFB73, 0xFB74, 0xFB75}, {0x0685, 0x0685, 0x0685, 0x0685},
68 {0xFB7A, 0xFB7B, 0xFB7C, 0xFB7D}, {0xFB7E, 0xFB7F, 0xFB80, 0xFB81},
69 {0xFB88, 0xFB89, 0xFB88, 0xFB89}, {0x0689, 0x0689, 0x0689, 0x0689},
70 {0x068A, 0x068A, 0x068A, 0x068A}, {0x068B, 0x068B, 0x068B, 0x068B},
71 {0xFB84, 0xFB85, 0xFB84, 0xFB85}, {0xFB82, 0xFB83, 0xFB82, 0xFB83},
72 {0xFB86, 0xFB87, 0xFB86, 0xFB87}, {0x068F, 0x068F, 0x068F, 0x068F},
73 {0x0690, 0x0690, 0x0690, 0x0690}, {0xFB8C, 0xFB8D, 0xFB8C, 0xFB8D},
74 {0x0692, 0x0692, 0x0692, 0x0692}, {0x0693, 0x0693, 0x0693, 0x0693},
75 {0x0694, 0x0694, 0x0694, 0x0694}, {0x0695, 0x0695, 0x0695, 0x0695},
76 {0x0696, 0x0696, 0x0696, 0x0696}, {0x0697, 0x0697, 0x0697, 0x0697},
77 {0xFB8A, 0xFB8B, 0xFB8A, 0xFB8B}, {0x0699, 0x0699, 0x0699, 0x0699},
78 {0x069A, 0x069A, 0x069A, 0x069A}, {0x069B, 0x069B, 0x069B, 0x069B},
79 {0x069C, 0x069C, 0x069C, 0x069C}, {0x069D, 0x069D, 0x069D, 0x069D},
80 {0x069E, 0x069E, 0x069E, 0x069E}, {0x069F, 0x069F, 0x069F, 0x069F},
81 {0x06A0, 0x06A0, 0x06A0, 0x06A0}, {0x06A1, 0x06A1, 0x06A1, 0x06A1},
82 {0x06A2, 0x06A2, 0x06A2, 0x06A2}, {0x06A3, 0x06A3, 0x06A3, 0x06A3},
83 {0xFB6A, 0xFB6B, 0xFB6C, 0xFB6D}, {0x06A5, 0x06A5, 0x06A5, 0x06A5},
84 {0xFB6E, 0xFB6F, 0xFB70, 0xFB71}, {0x06A7, 0x06A7, 0x06A7, 0x06A7},
85 {0x06A8, 0x06A8, 0x06A8, 0x06A8}, {0xFB8E, 0xFB8F, 0xFB90, 0xFB91},
86 {0x06AA, 0x06AA, 0x06AA, 0x06AA}, {0x06AB, 0x06AB, 0x06AB, 0x06AB},
87 {0x06AC, 0x06AC, 0x06AC, 0x06AC}, {0xFBD3, 0xFBD4, 0xFBD5, 0xFBD6},
88 {0x06AE, 0x06AE, 0x06AE, 0x06AE}, {0xFB92, 0xFB93, 0xFB94, 0xFB95},
89 {0x06B0, 0x06B0, 0x06B0, 0x06B0}, {0xFB9A, 0xFB9B, 0xFB9C, 0xFB9D},
90 {0x06B2, 0x06B2, 0x06B2, 0x06B2}, {0xFB96, 0xFB97, 0xFB98, 0xFB99},
91 {0x06B4, 0x06B4, 0x06B4, 0x06B4}, {0x06B5, 0x06B5, 0x06B5, 0x06B5},
92 {0x06B6, 0x06B6, 0x06B6, 0x06B6}, {0x06B7, 0x06B7, 0x06B7, 0x06B7},
93 {0x06B8, 0x06B8, 0x06B8, 0x06B8}, {0x06B9, 0x06B9, 0x06B9, 0x06B9},
94 {0xFB9E, 0xFB9F, 0xFBE8, 0xFBE9}, {0xFBA0, 0xFBA1, 0xFBA2, 0xFBA3},
95 {0x06BC, 0x06BC, 0x06BC, 0x06BC}, {0x06BD, 0x06BD, 0x06BD, 0x06BD},
96 {0xFBAA, 0xFBAB, 0xFBAC, 0xFBAD}, {0x06BF, 0x06BF, 0x06BF, 0x06BF},
97 {0xFBA4, 0xFBA5, 0xFBA4, 0xFBA5}, {0xFBA6, 0xFBA7, 0xFBA8, 0xFBA9},
98 {0x06C2, 0x06C2, 0x06C2, 0x06C2}, {0x06C3, 0x06C3, 0x06C3, 0x06C3},
99 {0x06C4, 0x06C4, 0x06C4, 0x06C4}, {0xFBE0, 0xFBE1, 0xFBE0, 0xFBE1},
100 {0xFBD9, 0xFBDA, 0xFBD9, 0xFBDA}, {0xFBD7, 0xFBD8, 0xFBD7, 0xFBD8},
101 {0xFBDB, 0xFBDC, 0xFBDB, 0xFBDC}, {0xFBE2, 0xFBE3, 0xFBE2, 0xFBE3},
102 {0x06CA, 0x06CA, 0x06CA, 0x06CA}, {0xFBDE, 0xFBDF, 0xFBDE, 0xFBDF},
103 {0xFBFC, 0xFBFD, 0xFBFE, 0xFBFF}, {0x06CD, 0x06CD, 0x06CD, 0x06CD},
104 {0x06CE, 0x06CE, 0x06CE, 0x06CE}, {0x06CF, 0x06CF, 0x06CF, 0x06CF},
105 {0xFBE4, 0xFBE5, 0xFBE6, 0xFBE7}, {0x06D1, 0x06D1, 0x06D1, 0x06D1},
106 {0xFBAE, 0xFBAF, 0xFBAE, 0xFBAF}, {0xFBB0, 0xFBB1, 0xFBB0, 0xFBB1},
107 {0x06D4, 0x06D4, 0x06D4, 0x06D4}, {0x06D5, 0x06D5, 0x06D5, 0x06D5},
108 };
109
110 const FX_ARAALEF gs_FX_AlefTable[] = {
111 {0x0622, 0xFEF5},
112 {0x0623, 0xFEF7},
113 {0x0625, 0xFEF9},
114 {0x0627, 0xFEFB},
115 };
116
117 const FX_ARASHADDA gs_FX_ShaddaTable[] = {
118 {0x064C, 0xFC5E}, {0x064D, 0xFC5F}, {0x064E, 0xFC60},
119 {0x064F, 0xFC61}, {0x0650, 0xFC62},
120 };
121
122 const int32_t gc_FX_BidiNTypes[] = {
123 FX_BIDICLASS_N, FX_BIDICLASS_L, FX_BIDICLASS_R, FX_BIDICLASS_AN,
124 FX_BIDICLASS_EN, FX_BIDICLASS_AL, FX_BIDICLASS_NSM, FX_BIDICLASS_CS,
125 FX_BIDICLASS_ES, FX_BIDICLASS_ET, FX_BIDICLASS_BN, FX_BIDICLASS_BN,
126 FX_BIDICLASS_N, FX_BIDICLASS_B, FX_BIDICLASS_RLO, FX_BIDICLASS_RLE,
127 FX_BIDICLASS_LRO, FX_BIDICLASS_LRE, FX_BIDICLASS_PDF, FX_BIDICLASS_ON,
128 };
129
130 const int32_t gc_FX_BidiWeakStates[][10] = {
131 {FX_BWSao, FX_BWSxl, FX_BWSxr, FX_BWScn, FX_BWScn, FX_BWSxa, FX_BWSxa,
132 FX_BWSao, FX_BWSao, FX_BWSao},
133 {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSxr,
134 FX_BWSro, FX_BWSro, FX_BWSrt},
135 {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSxl,
136 FX_BWSlo, FX_BWSlo, FX_BWSlt},
137 {FX_BWSao, FX_BWSxl, FX_BWSxr, FX_BWScn, FX_BWScn, FX_BWSxa, FX_BWSao,
138 FX_BWSao, FX_BWSao, FX_BWSao},
139 {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSro,
140 FX_BWSro, FX_BWSro, FX_BWSrt},
141 {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlo,
142 FX_BWSlo, FX_BWSlo, FX_BWSlt},
143 {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSrt,
144 FX_BWSro, FX_BWSro, FX_BWSrt},
145 {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlt,
146 FX_BWSlo, FX_BWSlo, FX_BWSlt},
147 {FX_BWSao, FX_BWSxl, FX_BWSxr, FX_BWScn, FX_BWScn, FX_BWSxa, FX_BWScn,
148 FX_BWSac, FX_BWSao, FX_BWSao},
149 {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSra,
150 FX_BWSrc, FX_BWSro, FX_BWSrt},
151 {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSre,
152 FX_BWSrs, FX_BWSrs, FX_BWSret},
153 {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSla,
154 FX_BWSlc, FX_BWSlo, FX_BWSlt},
155 {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSle,
156 FX_BWSls, FX_BWSls, FX_BWSlet},
157 {FX_BWSao, FX_BWSxl, FX_BWSxr, FX_BWScn, FX_BWScn, FX_BWSxa, FX_BWSao,
158 FX_BWSao, FX_BWSao, FX_BWSao},
159 {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSro,
160 FX_BWSro, FX_BWSro, FX_BWSrt},
161 {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSro,
162 FX_BWSro, FX_BWSro, FX_BWSrt},
163 {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlo,
164 FX_BWSlo, FX_BWSlo, FX_BWSlt},
165 {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlo,
166 FX_BWSlo, FX_BWSlo, FX_BWSlt},
167 {FX_BWSro, FX_BWSxl, FX_BWSxr, FX_BWSra, FX_BWSre, FX_BWSxa, FX_BWSret,
168 FX_BWSro, FX_BWSro, FX_BWSret},
169 {FX_BWSlo, FX_BWSxl, FX_BWSxr, FX_BWSla, FX_BWSle, FX_BWSxa, FX_BWSlet,
170 FX_BWSlo, FX_BWSlo, FX_BWSlet},
171 };
172
173 const int32_t gc_FX_BidiWeakActions[][10] = {
174 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxA, FX_BWAxxR,
175 FX_BWAxxR, FX_BWAxxN, FX_BWAxxN, FX_BWAxxN},
176 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR,
177 FX_BWAxxR, FX_BWAxxN, FX_BWAxxN, FX_BWAxIx},
178 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR,
179 FX_BWAxxL, FX_BWAxxN, FX_BWAxxN, FX_BWAxIx},
180 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxA, FX_BWAxxR,
181 FX_BWAxxN, FX_BWAxxN, FX_BWAxxN, FX_BWAxxN},
182 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR,
183 FX_BWAxxN, FX_BWAxxN, FX_BWAxxN, FX_BWAxIx},
184 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR,
185 FX_BWAxxN, FX_BWAxxN, FX_BWAxxN, FX_BWAxIx},
186 {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAExE, FX_BWANxR,
187 FX_BWAxIx, FX_BWANxN, FX_BWANxN, FX_BWAxIx},
188 {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWALxL, FX_BWANxR,
189 FX_BWAxIx, FX_BWANxN, FX_BWANxN, FX_BWAxIx},
190 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxA, FX_BWAxxR,
191 FX_BWAxxA, FX_BWAxIx, FX_BWAxxN, FX_BWAxxN},
192 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR,
193 FX_BWAxxA, FX_BWAxIx, FX_BWAxxN, FX_BWAxIx},
194 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR,
195 FX_BWAxxE, FX_BWAxIx, FX_BWAxIx, FX_BWAxxE},
196 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR,
197 FX_BWAxxA, FX_BWAxIx, FX_BWAxxN, FX_BWAxIx},
198 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR,
199 FX_BWAxxL, FX_BWAxIx, FX_BWAxIx, FX_BWAxxL},
200 {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAAxx, FX_BWAAxA, FX_BWANxR,
201 FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANxN},
202 {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAAxx, FX_BWANxE, FX_BWANxR,
203 FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANIx},
204 {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAExE, FX_BWANxR,
205 FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANIx},
206 {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWAAxx, FX_BWANxL, FX_BWANxR,
207 FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANIx},
208 {FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWANxx, FX_BWALxL, FX_BWANxR,
209 FX_BWANxN, FX_BWANxN, FX_BWANxN, FX_BWANIx},
210 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxE, FX_BWAxxR,
211 FX_BWAxxE, FX_BWAxxN, FX_BWAxxN, FX_BWAxxE},
212 {FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxx, FX_BWAxxL, FX_BWAxxR,
213 FX_BWAxxL, FX_BWAxxN, FX_BWAxxN, FX_BWAxxL},
214 };
215
216 const int32_t gc_FX_BidiNeutralStates[][5] = {
217 {FX_BNSrn, FX_BNSl, FX_BNSr, FX_BNSr, FX_BNSr},
218 {FX_BNSln, FX_BNSl, FX_BNSr, FX_BNSa, FX_BNSl},
219 {FX_BNSrn, FX_BNSl, FX_BNSr, FX_BNSr, FX_BNSr},
220 {FX_BNSln, FX_BNSl, FX_BNSr, FX_BNSa, FX_BNSl},
221 {FX_BNSna, FX_BNSl, FX_BNSr, FX_BNSa, FX_BNSl},
222 {FX_BNSna, FX_BNSl, FX_BNSr, FX_BNSa, FX_BNSl},
223 };
224 const int32_t gc_FX_BidiNeutralActions[][5] = {
225 {FX_BNAIn, 0, 0, 0, 0},
226 {FX_BNAIn, 0, 0, 0, FX_BIDICLASS_L},
227 {FX_BNAIn, FX_BNAEn, FX_BNARn, FX_BNARn, FX_BNARn},
228 {FX_BNAIn, FX_BNALn, FX_BNAEn, FX_BNAEn, FX_BNALnL},
229 {FX_BNAIn, 0, 0, 0, FX_BIDICLASS_L},
230 {FX_BNAIn, FX_BNAEn, FX_BNARn, FX_BNARn, FX_BNAEn},
231 };
232
233 const int32_t gc_FX_BidiAddLevel[][4] = {
234 {0, 1, 2, 2},
235 {1, 0, 1, 1},
236 };
237
ParseChar(const CFX_Char * pTC,FX_WCHAR & wChar,FX_CHARTYPE & eType)238 const FX_ARBFORMTABLE* ParseChar(const CFX_Char* pTC,
239 FX_WCHAR& wChar,
240 FX_CHARTYPE& eType) {
241 if (!pTC) {
242 eType = FX_CHARTYPE_Unknown;
243 wChar = 0xFEFF;
244 return nullptr;
245 }
246 eType = pTC->GetCharType();
247 wChar = (FX_WCHAR)pTC->m_wCharCode;
248 const FX_ARBFORMTABLE* pFT = FX_GetArabicFormTable(wChar);
249 if (!pFT || eType >= FX_CHARTYPE_ArabicNormal)
250 eType = FX_CHARTYPE_Unknown;
251
252 return pFT;
253 }
254
255 } // namespace
256
FX_GetArabicFormTable(FX_WCHAR unicode)257 const FX_ARBFORMTABLE* FX_GetArabicFormTable(FX_WCHAR unicode) {
258 if (unicode < 0x622 || unicode > 0x6d5) {
259 return nullptr;
260 }
261 return g_FX_ArabicFormTables + unicode - 0x622;
262 }
FX_GetArabicFromAlefTable(FX_WCHAR alef)263 FX_WCHAR FX_GetArabicFromAlefTable(FX_WCHAR alef) {
264 static const int32_t s_iAlefCount =
265 sizeof(gs_FX_AlefTable) / sizeof(FX_ARAALEF);
266 for (int32_t iStart = 0; iStart < s_iAlefCount; iStart++) {
267 const FX_ARAALEF& v = gs_FX_AlefTable[iStart];
268 if (v.wAlef == alef) {
269 return v.wIsolated;
270 }
271 }
272 return alef;
273 }
FX_GetArabicFromShaddaTable(FX_WCHAR shadda)274 FX_WCHAR FX_GetArabicFromShaddaTable(FX_WCHAR shadda) {
275 static const int32_t s_iShaddaCount =
276 sizeof(gs_FX_ShaddaTable) / sizeof(FX_ARASHADDA);
277 for (int32_t iStart = 0; iStart < s_iShaddaCount; iStart++) {
278 const FX_ARASHADDA& v = gs_FX_ShaddaTable[iStart];
279 if (v.wShadda == shadda) {
280 return v.wIsolated;
281 }
282 }
283 return shadda;
284 }
285
286 namespace pdfium {
287 namespace arabic {
288
IsArabicChar(FX_WCHAR wch)289 bool IsArabicChar(FX_WCHAR wch) {
290 uint32_t dwRet =
291 kTextLayoutCodeProperties[(uint16_t)wch] & FX_CHARTYPEBITSMASK;
292 return dwRet >= FX_CHARTYPE_ArabicAlef;
293 }
294
IsArabicFormChar(FX_WCHAR wch)295 bool IsArabicFormChar(FX_WCHAR wch) {
296 return (kTextLayoutCodeProperties[(uint16_t)wch] & FX_CHARTYPEBITSMASK) ==
297 FX_CHARTYPE_ArabicForm;
298 }
299
GetFormChar(FX_WCHAR wch,FX_WCHAR prev,FX_WCHAR next)300 FX_WCHAR GetFormChar(FX_WCHAR wch, FX_WCHAR prev, FX_WCHAR next) {
301 CFX_Char c(wch, kTextLayoutCodeProperties[(uint16_t)wch]);
302 CFX_Char p(prev, kTextLayoutCodeProperties[(uint16_t)prev]);
303 CFX_Char n(next, kTextLayoutCodeProperties[(uint16_t)next]);
304 return GetFormChar(&c, &p, &n);
305 }
306
GetFormChar(const CFX_Char * cur,const CFX_Char * prev,const CFX_Char * next)307 FX_WCHAR GetFormChar(const CFX_Char* cur,
308 const CFX_Char* prev,
309 const CFX_Char* next) {
310 FX_CHARTYPE eCur;
311 FX_WCHAR wCur;
312 const FX_ARBFORMTABLE* ft = ParseChar(cur, wCur, eCur);
313 if (eCur < FX_CHARTYPE_ArabicAlef || eCur >= FX_CHARTYPE_ArabicNormal) {
314 return wCur;
315 }
316 FX_CHARTYPE ePrev;
317 FX_WCHAR wPrev;
318 ParseChar(prev, wPrev, ePrev);
319 if (wPrev == 0x0644 && eCur == FX_CHARTYPE_ArabicAlef) {
320 return 0xFEFF;
321 }
322 FX_CHARTYPE eNext;
323 FX_WCHAR wNext;
324 ParseChar(next, wNext, eNext);
325 bool bAlef = (eNext == FX_CHARTYPE_ArabicAlef && wCur == 0x644);
326 if (ePrev < FX_CHARTYPE_ArabicAlef) {
327 if (bAlef) {
328 return FX_GetArabicFromAlefTable(wNext);
329 }
330 return (eNext < FX_CHARTYPE_ArabicAlef) ? ft->wIsolated : ft->wInitial;
331 }
332 if (bAlef) {
333 wCur = FX_GetArabicFromAlefTable(wNext);
334 return (ePrev != FX_CHARTYPE_ArabicDistortion) ? wCur : ++wCur;
335 }
336 if (ePrev == FX_CHARTYPE_ArabicAlef || ePrev == FX_CHARTYPE_ArabicSpecial) {
337 return (eNext < FX_CHARTYPE_ArabicAlef) ? ft->wIsolated : ft->wInitial;
338 }
339 return (eNext < FX_CHARTYPE_ArabicAlef) ? ft->wFinal : ft->wMedial;
340 }
341
342 } // namespace arabic
343 } // namespace pdfium
344
FX_BidiReverseString(CFX_WideString & wsText,int32_t iStart,int32_t iCount)345 void FX_BidiReverseString(CFX_WideString& wsText,
346 int32_t iStart,
347 int32_t iCount) {
348 ASSERT(iStart > -1 && iStart < wsText.GetLength());
349 ASSERT(iCount >= 0 && iStart + iCount <= wsText.GetLength());
350 FX_WCHAR wch;
351 FX_WCHAR* pStart = const_cast<FX_WCHAR*>(wsText.c_str());
352 pStart += iStart;
353 FX_WCHAR* pEnd = pStart + iCount - 1;
354 while (pStart < pEnd) {
355 wch = *pStart;
356 *pStart++ = *pEnd;
357 *pEnd-- = wch;
358 }
359 }
360
361
FX_BidiGetDeferredNeutrals(int32_t iAction,int32_t iLevel)362 int32_t FX_BidiGetDeferredNeutrals(int32_t iAction, int32_t iLevel) {
363 iAction = (iAction >> 4) & 0xF;
364 if (iAction == (FX_BIDINEUTRALACTION_En >> 4)) {
365 return FX_BidiDirection(iLevel);
366 } else {
367 return iAction;
368 }
369 }
370
FX_BidiGetResolvedNeutrals(int32_t iAction)371 int32_t FX_BidiGetResolvedNeutrals(int32_t iAction) {
372 iAction = (iAction & 0xF);
373 if (iAction == FX_BIDINEUTRALACTION_In) {
374 return 0;
375 } else {
376 return iAction;
377 }
378 }
379
FX_BidiReorderLevel(int32_t iBaseLevel,CFX_WideString & wsText,const CFX_ArrayTemplate<int32_t> & levels,int32_t iStart,bool bReverse)380 int32_t FX_BidiReorderLevel(int32_t iBaseLevel,
381 CFX_WideString& wsText,
382 const CFX_ArrayTemplate<int32_t>& levels,
383 int32_t iStart,
384 bool bReverse) {
385 ASSERT(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
386 ASSERT(wsText.GetLength() == levels.GetSize());
387 ASSERT(iStart >= 0 && iStart < wsText.GetLength());
388 int32_t iSize = wsText.GetLength();
389 if (iSize < 1) {
390 return 0;
391 }
392 bReverse = bReverse || FX_IsOdd(iBaseLevel);
393 int32_t i = iStart, iLevel;
394 for (; i < iSize; i++) {
395 if ((iLevel = levels.GetAt(i)) == iBaseLevel) {
396 continue;
397 }
398 if (iLevel < iBaseLevel) {
399 break;
400 }
401 i += FX_BidiReorderLevel(iBaseLevel + 1, wsText, levels, i, bReverse) - 1;
402 }
403 int32_t iCount = i - iStart;
404 if (bReverse && iCount > 1) {
405 FX_BidiReverseString(wsText, iStart, iCount);
406 }
407 return iCount;
408 }
FX_BidiReorder(int32_t iBaseLevel,CFX_WideString & wsText,const CFX_ArrayTemplate<int32_t> & levels)409 void FX_BidiReorder(int32_t iBaseLevel,
410 CFX_WideString& wsText,
411 const CFX_ArrayTemplate<int32_t>& levels) {
412 ASSERT(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
413 ASSERT(wsText.GetLength() == levels.GetSize());
414 int32_t iSize = wsText.GetLength();
415 if (iSize < 1) {
416 return;
417 }
418 int32_t i = 0;
419 while (i < iSize) {
420 i += FX_BidiReorderLevel(iBaseLevel, wsText, levels, i, false);
421 }
422 }
423
424 template <class baseType>
425 class CFX_BidiLineTemplate {
426 public:
FX_BidiReverseString(std::vector<baseType> & chars,int32_t iStart,int32_t iCount)427 void FX_BidiReverseString(std::vector<baseType>& chars,
428 int32_t iStart,
429 int32_t iCount) {
430 ASSERT(iStart >= 0 && iStart < pdfium::CollectionSize<int32_t>(chars));
431 ASSERT(iCount >= 0 &&
432 iStart + iCount <= pdfium::CollectionSize<int32_t>(chars));
433 std::reverse(chars.begin() + iStart, chars.begin() + iStart + iCount);
434 }
435
FX_BidiSetDeferredRun(std::vector<baseType> & chars,bool bClass,int32_t iStart,int32_t iCount,int32_t iValue)436 void FX_BidiSetDeferredRun(std::vector<baseType>& chars,
437 bool bClass,
438 int32_t iStart,
439 int32_t iCount,
440 int32_t iValue) {
441 ASSERT(iStart >= 0 && iStart <= pdfium::CollectionSize<int32_t>(chars));
442 ASSERT(iStart - iCount > -1);
443 int32_t iLast = iStart - iCount;
444 if (bClass) {
445 for (int32_t i = iStart - 1; i >= iLast; i--)
446 chars[i].m_iBidiClass = (int16_t)iValue;
447 } else {
448 for (int32_t i = iStart - 1; i >= iLast; i--)
449 chars[i].m_iBidiLevel = (int16_t)iValue;
450 }
451 }
452
FX_BidiClassify(std::vector<baseType> & chars,int32_t iCount,bool bWS)453 void FX_BidiClassify(std::vector<baseType>& chars, int32_t iCount, bool bWS) {
454 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
455 if (bWS) {
456 for (int32_t i = 0; i < iCount; i++) {
457 chars[i].m_iBidiClass =
458 (int16_t)(chars[i].m_dwCharProps & FX_BIDICLASSBITSMASK) >>
459 FX_BIDICLASSBITS;
460 }
461 } else {
462 for (int32_t i = 0; i < iCount; i++) {
463 chars[i].m_iBidiClass = (int16_t)
464 gc_FX_BidiNTypes[(chars[i].m_dwCharProps & FX_BIDICLASSBITSMASK) >>
465 FX_BIDICLASSBITS];
466 }
467 }
468 }
469
FX_BidiResolveExplicit(std::vector<baseType> & chars,int32_t iCount,int32_t iBaseLevel)470 void FX_BidiResolveExplicit(std::vector<baseType>& chars,
471 int32_t iCount,
472 int32_t iBaseLevel) {
473 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
474 ASSERT(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
475 for (int32_t i = 0; i < iCount; i++)
476 chars[i].m_iBidiLevel = static_cast<int16_t>(iBaseLevel);
477 }
478
FX_BidiResolveWeak(std::vector<baseType> & chars,int32_t iCount,int32_t iBaseLevel)479 void FX_BidiResolveWeak(std::vector<baseType>& chars,
480 int32_t iCount,
481 int32_t iBaseLevel) {
482 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
483 iCount--;
484 if (iCount < 1) {
485 return;
486 }
487 baseType *pTC, *pTCNext;
488 int32_t iLevelCur = iBaseLevel;
489 int32_t iState = FX_IsOdd(iBaseLevel) ? FX_BWSxr : FX_BWSxl;
490 int32_t i = 0, iNum = 0, iClsCur, iClsRun, iClsNew, iAction;
491 for (; i <= iCount; i++) {
492 pTC = &chars[i];
493 iClsCur = pTC->m_iBidiClass;
494 if (iClsCur == FX_BIDICLASS_BN) {
495 pTC->m_iBidiLevel = (int16_t)iLevelCur;
496 if (i == iCount && iLevelCur != iBaseLevel) {
497 iClsCur = FX_BidiDirection(iLevelCur);
498 pTC->m_iBidiClass = (int16_t)iClsCur;
499 } else if (i < iCount) {
500 pTCNext = &chars[i + 1];
501 int32_t iLevelNext, iLevelNew;
502 iClsNew = pTCNext->m_iBidiClass;
503 iLevelNext = pTCNext->m_iBidiLevel;
504 if (iClsNew != FX_BIDICLASS_BN && iLevelCur != iLevelNext) {
505 iLevelNew = iLevelNext;
506 if (iLevelCur > iLevelNew) {
507 iLevelNew = iLevelCur;
508 }
509 pTC->m_iBidiLevel = (int16_t)iLevelNew;
510 iClsCur = FX_BidiDirection(iLevelNew);
511 pTC->m_iBidiClass = (int16_t)iClsCur;
512 iLevelCur = iLevelNext;
513 } else {
514 if (iNum > 0) {
515 iNum++;
516 }
517 continue;
518 }
519 } else {
520 if (iNum > 0) {
521 iNum++;
522 }
523 continue;
524 }
525 }
526 ASSERT(iClsCur <= FX_BIDICLASS_BN);
527 iAction = gc_FX_BidiWeakActions[iState][iClsCur];
528 iClsRun = FX_BidiGetDeferredType(iAction);
529 if (iClsRun != FX_BIDIWEAKACTION_XX && iNum > 0) {
530 FX_BidiSetDeferredRun(chars, true, i, iNum, iClsRun);
531 iNum = 0;
532 }
533 iClsNew = FX_BidiGetResolvedType(iAction);
534 if (iClsNew != FX_BIDIWEAKACTION_XX) {
535 pTC->m_iBidiClass = (int16_t)iClsNew;
536 }
537 if (FX_BIDIWEAKACTION_IX & iAction) {
538 iNum++;
539 }
540 iState = gc_FX_BidiWeakStates[iState][iClsCur];
541 }
542 if (iNum > 0) {
543 iClsCur = FX_BidiDirection(iBaseLevel);
544 iClsRun = FX_BidiGetDeferredType(gc_FX_BidiWeakActions[iState][iClsCur]);
545 if (iClsRun != FX_BIDIWEAKACTION_XX) {
546 FX_BidiSetDeferredRun(chars, true, i, iNum, iClsRun);
547 }
548 }
549 }
550
FX_BidiResolveNeutrals(std::vector<baseType> & chars,int32_t iCount,int32_t iBaseLevel)551 void FX_BidiResolveNeutrals(std::vector<baseType>& chars,
552 int32_t iCount,
553 int32_t iBaseLevel) {
554 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
555 ASSERT(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
556 iCount--;
557 if (iCount < 1) {
558 return;
559 }
560 baseType* pTC;
561 int32_t iLevel = iBaseLevel;
562 int32_t iState = FX_IsOdd(iBaseLevel) ? FX_BNSr : FX_BNSl;
563 int32_t i = 0, iNum = 0, iClsCur, iClsRun, iClsNew, iAction;
564 for (; i <= iCount; i++) {
565 pTC = &chars[i];
566 iClsCur = pTC->m_iBidiClass;
567 if (iClsCur == FX_BIDICLASS_BN) {
568 if (iNum) {
569 iNum++;
570 }
571 continue;
572 }
573 ASSERT(iClsCur < FX_BIDICLASS_AL);
574 iAction = gc_FX_BidiNeutralActions[iState][iClsCur];
575 iClsRun = FX_BidiGetDeferredNeutrals(iAction, iLevel);
576 if (iClsRun != FX_BIDICLASS_N && iNum > 0) {
577 FX_BidiSetDeferredRun(chars, true, i, iNum, iClsRun);
578 iNum = 0;
579 }
580 iClsNew = FX_BidiGetResolvedNeutrals(iAction);
581 if (iClsNew != FX_BIDICLASS_N) {
582 pTC->m_iBidiClass = (int16_t)iClsNew;
583 }
584 if (FX_BIDINEUTRALACTION_In & iAction) {
585 iNum++;
586 }
587 iState = gc_FX_BidiNeutralStates[iState][iClsCur];
588 iLevel = pTC->m_iBidiLevel;
589 }
590 if (iNum > 0) {
591 iClsCur = FX_BidiDirection(iLevel);
592 iClsRun = FX_BidiGetDeferredNeutrals(
593 gc_FX_BidiNeutralActions[iState][iClsCur], iLevel);
594 if (iClsRun != FX_BIDICLASS_N) {
595 FX_BidiSetDeferredRun(chars, true, i, iNum, iClsRun);
596 }
597 }
598 }
599
FX_BidiResolveImplicit(std::vector<baseType> & chars,int32_t iCount)600 void FX_BidiResolveImplicit(std::vector<baseType>& chars, int32_t iCount) {
601 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
602 for (int32_t i = 0; i < iCount; i++) {
603 int32_t iCls = chars[i].m_iBidiClass;
604 if (iCls == FX_BIDICLASS_BN) {
605 continue;
606 }
607 ASSERT(iCls > FX_BIDICLASS_ON && iCls < FX_BIDICLASS_AL);
608 int32_t iLevel = chars[i].m_iBidiLevel;
609 iLevel += gc_FX_BidiAddLevel[FX_IsOdd(iLevel)][iCls - 1];
610 chars[i].m_iBidiLevel = (int16_t)iLevel;
611 }
612 }
613
FX_BidiResolveWhitespace(std::vector<baseType> & chars,int32_t iCount,int32_t iBaseLevel)614 void FX_BidiResolveWhitespace(std::vector<baseType>& chars,
615 int32_t iCount,
616 int32_t iBaseLevel) {
617 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
618 ASSERT(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
619 if (iCount < 1) {
620 return;
621 }
622 iCount--;
623 int32_t iLevel = iBaseLevel;
624 int32_t i = 0, iNum = 0;
625 for (; i <= iCount; i++) {
626 switch (chars[i].m_iBidiClass) {
627 case FX_BIDICLASS_WS:
628 iNum++;
629 break;
630 case FX_BIDICLASS_RLE:
631 case FX_BIDICLASS_LRE:
632 case FX_BIDICLASS_LRO:
633 case FX_BIDICLASS_RLO:
634 case FX_BIDICLASS_PDF:
635 case FX_BIDICLASS_BN:
636 chars[i].m_iBidiLevel = (int16_t)iLevel;
637 iNum++;
638 break;
639 case FX_BIDICLASS_S:
640 case FX_BIDICLASS_B:
641 if (iNum > 0) {
642 FX_BidiSetDeferredRun(chars, false, i, iNum, iBaseLevel);
643 }
644 chars[i].m_iBidiLevel = (int16_t)iBaseLevel;
645 iNum = 0;
646 break;
647 default:
648 iNum = 0;
649 break;
650 }
651 iLevel = chars[i].m_iBidiLevel;
652 }
653 if (iNum > 0) {
654 FX_BidiSetDeferredRun(chars, false, i, iNum, iBaseLevel);
655 }
656 }
657
FX_BidiReorderLevel(std::vector<baseType> & chars,int32_t iCount,int32_t iBaseLevel,int32_t iStart,bool bReverse)658 int32_t FX_BidiReorderLevel(std::vector<baseType>& chars,
659 int32_t iCount,
660 int32_t iBaseLevel,
661 int32_t iStart,
662 bool bReverse) {
663 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
664 ASSERT(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
665 ASSERT(iStart >= 0 && iStart < iCount);
666 if (iCount < 1) {
667 return 0;
668 }
669 bReverse = bReverse || FX_IsOdd(iBaseLevel);
670 int32_t i = iStart;
671 for (; i < iCount; i++) {
672 int32_t iLevel = chars[i].m_iBidiLevel;
673 if (iLevel == iBaseLevel)
674 continue;
675 if (iLevel < iBaseLevel)
676 break;
677 i += FX_BidiReorderLevel(chars, iCount, iBaseLevel + 1, i, bReverse) - 1;
678 }
679 int32_t iNum = i - iStart;
680 if (bReverse && iNum > 1) {
681 FX_BidiReverseString(chars, iStart, iNum);
682 }
683 return iNum;
684 }
685
FX_BidiReorder(std::vector<baseType> & chars,int32_t iCount,int32_t iBaseLevel)686 void FX_BidiReorder(std::vector<baseType>& chars,
687 int32_t iCount,
688 int32_t iBaseLevel) {
689 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
690 ASSERT(iBaseLevel >= 0 && iBaseLevel <= FX_BIDIMAXLEVEL);
691 int32_t i = 0;
692 while (i < iCount) {
693 i += FX_BidiReorderLevel(chars, iCount, iBaseLevel, i, false);
694 }
695 }
696
FX_BidiPosition(std::vector<baseType> & chars,int32_t iCount)697 void FX_BidiPosition(std::vector<baseType>& chars, int32_t iCount) {
698 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
699 for (int32_t i = 0; i < iCount; ++i)
700 chars[chars[i].m_iBidiPos].m_iBidiOrder = i;
701 }
702
FX_BidiLine(std::vector<baseType> & chars,int32_t iCount,int32_t iBaseLevel)703 void FX_BidiLine(std::vector<baseType>& chars,
704 int32_t iCount,
705 int32_t iBaseLevel) {
706 ASSERT(iCount >= 0 && iCount <= pdfium::CollectionSize<int32_t>(chars));
707 if (iCount < 2) {
708 return;
709 }
710 FX_BidiClassify(chars, iCount, false);
711 FX_BidiResolveExplicit(chars, iCount, iBaseLevel);
712 FX_BidiResolveWeak(chars, iCount, iBaseLevel);
713 FX_BidiResolveNeutrals(chars, iCount, iBaseLevel);
714 FX_BidiResolveImplicit(chars, iCount);
715 FX_BidiClassify(chars, iCount, true);
716 FX_BidiResolveWhitespace(chars, iCount, iBaseLevel);
717 FX_BidiReorder(chars, iCount, iBaseLevel);
718 FX_BidiPosition(chars, iCount);
719 }
720 };
721
FX_BidiLine(std::vector<CFX_TxtChar> & chars,int32_t iCount,int32_t iBaseLevel)722 void FX_BidiLine(std::vector<CFX_TxtChar>& chars,
723 int32_t iCount,
724 int32_t iBaseLevel) {
725 CFX_BidiLineTemplate<CFX_TxtChar> blt;
726 blt.FX_BidiLine(chars, iCount, iBaseLevel);
727 }
FX_BidiLine(std::vector<CFX_RTFChar> & chars,int32_t iCount,int32_t iBaseLevel)728 void FX_BidiLine(std::vector<CFX_RTFChar>& chars,
729 int32_t iCount,
730 int32_t iBaseLevel) {
731 CFX_BidiLineTemplate<CFX_RTFChar> blt;
732 blt.FX_BidiLine(chars, iCount, iBaseLevel);
733 }
734