1 // Copyright 2018 The PDFium Authors
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_codepage.h"
8
9 #include <algorithm>
10 #include <iterator>
11 #include <utility>
12
13 #include "build/build_config.h"
14 #include "third_party/base/numerics/safe_math.h"
15
16 #if BUILDFLAG(IS_WIN)
17 #include <windows.h>
18 #endif
19
20 namespace {
21
22 const uint16_t kFX_MSDOSThaiUnicodes[128] = {
23 0x20AC, 0x0000, 0x0000, 0x0000, 0x0000, 0x2026, 0x0000, 0x0000, 0x0000,
24 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
25 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x0000, 0x0000,
26 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x00A0, 0x0E01, 0x0E02, 0x0E03,
27 0x0E04, 0x0E05, 0x0E06, 0x0E07, 0x0E08, 0x0E09, 0x0E0A, 0x0E0B, 0x0E0C,
28 0x0E0D, 0x0E0E, 0x0E0F, 0x0E10, 0x0E11, 0x0E12, 0x0E13, 0x0E14, 0x0E15,
29 0x0E16, 0x0E17, 0x0E18, 0x0E19, 0x0E1A, 0x0E1B, 0x0E1C, 0x0E1D, 0x0E1E,
30 0x0E1F, 0x0E20, 0x0E21, 0x0E22, 0x0E23, 0x0E24, 0x0E25, 0x0E26, 0x0E27,
31 0x0E28, 0x0E29, 0x0E2A, 0x0E2B, 0x0E2C, 0x0E2D, 0x0E2E, 0x0E2F, 0x0E30,
32 0x0E31, 0x0E32, 0x0E33, 0x0E34, 0x0E35, 0x0E36, 0x0E37, 0x0E38, 0x0E39,
33 0x0E3A, 0x0000, 0x0000, 0x0000, 0x0000, 0x0E3F, 0x0E40, 0x0E41, 0x0E42,
34 0x0E43, 0x0E44, 0x0E45, 0x0E46, 0x0E47, 0x0E48, 0x0E49, 0x0E4A, 0x0E4B,
35 0x0E4C, 0x0E4D, 0x0E4E, 0x0E4F, 0x0E50, 0x0E51, 0x0E52, 0x0E53, 0x0E54,
36 0x0E55, 0x0E56, 0x0E57, 0x0E58, 0x0E59, 0x0E5A, 0x0E5B, 0x0000, 0x0000,
37 0x0000, 0x0000,
38 };
39
40 const uint16_t kFX_MSWinEasternEuropeanUnicodes[128] = {
41 0x20AC, 0x0000, 0x201A, 0x0000, 0x201E, 0x2026, 0x2020, 0x2021, 0x0000,
42 0x2030, 0x0160, 0x2039, 0x015A, 0x0164, 0x017D, 0x0179, 0x0000, 0x2018,
43 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x2122, 0x0161,
44 0x203A, 0x015B, 0x0165, 0x017E, 0x017A, 0x00A0, 0x02C7, 0x02D8, 0x0141,
45 0x00A4, 0x0104, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x015E, 0x00AB, 0x00AC,
46 0x00AD, 0x00AE, 0x017B, 0x00B0, 0x00B1, 0x02DB, 0x0142, 0x00B4, 0x00B5,
47 0x00B6, 0x00B7, 0x00B8, 0x0105, 0x015F, 0x00BB, 0x013D, 0x02DD, 0x013E,
48 0x017C, 0x0154, 0x00C1, 0x00C2, 0x0102, 0x00C4, 0x0139, 0x0106, 0x00C7,
49 0x010C, 0x00C9, 0x0118, 0x00CB, 0x011A, 0x00CD, 0x00CE, 0x010E, 0x0110,
50 0x0143, 0x0147, 0x00D3, 0x00D4, 0x0150, 0x00D6, 0x00D7, 0x0158, 0x016E,
51 0x00DA, 0x0170, 0x00DC, 0x00DD, 0x0162, 0x00DF, 0x0155, 0x00E1, 0x00E2,
52 0x0103, 0x00E4, 0x013A, 0x0107, 0x00E7, 0x010D, 0x00E9, 0x0119, 0x00EB,
53 0x011B, 0x00ED, 0x00EE, 0x010F, 0x0111, 0x0144, 0x0148, 0x00F3, 0x00F4,
54 0x0151, 0x00F6, 0x00F7, 0x0159, 0x016F, 0x00FA, 0x0171, 0x00FC, 0x00FD,
55 0x0163, 0x02D9,
56 };
57
58 const uint16_t kFX_MSWinCyrillicUnicodes[128] = {
59 0x0402, 0x0403, 0x201A, 0x0453, 0x201E, 0x2026, 0x2020, 0x2021, 0x20AC,
60 0x2030, 0x0409, 0x2039, 0x040A, 0x040C, 0x040B, 0x040F, 0x0452, 0x2018,
61 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x2122, 0x0459,
62 0x203A, 0x045A, 0x045C, 0x045B, 0x045F, 0x00A0, 0x040E, 0x045E, 0x0408,
63 0x00A4, 0x0490, 0x00A6, 0x00A7, 0x0401, 0x00A9, 0x0404, 0x00AB, 0x00AC,
64 0x00AD, 0x00AE, 0x0407, 0x00B0, 0x00B1, 0x0406, 0x0456, 0x0491, 0x00B5,
65 0x00B6, 0x00B7, 0x0451, 0x2116, 0x0454, 0x00BB, 0x0458, 0x0405, 0x0455,
66 0x0457, 0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0416, 0x0417,
67 0x0418, 0x0419, 0x041A, 0x041B, 0x041C, 0x041D, 0x041E, 0x041F, 0x0420,
68 0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427, 0x0428, 0x0429,
69 0x042A, 0x042B, 0x042C, 0x042D, 0x042E, 0x042F, 0x0430, 0x0431, 0x0432,
70 0x0433, 0x0434, 0x0435, 0x0436, 0x0437, 0x0438, 0x0439, 0x043A, 0x043B,
71 0x043C, 0x043D, 0x043E, 0x043F, 0x0440, 0x0441, 0x0442, 0x0443, 0x0444,
72 0x0445, 0x0446, 0x0447, 0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D,
73 0x044E, 0x044F,
74 };
75
76 const uint16_t kFX_MSWinGreekUnicodes[128] = {
77 0x20AC, 0x0000, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x0000,
78 0x2030, 0x0000, 0x2039, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
79 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x2122, 0x0000,
80 0x203A, 0x0000, 0x0000, 0x0000, 0x0000, 0x00A0, 0x0385, 0x0386, 0x00A3,
81 0x00A4, 0x00A5, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x0000, 0x00AB, 0x00AC,
82 0x00AD, 0x00AE, 0x2015, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x0384, 0x00B5,
83 0x00B6, 0x00B7, 0x0388, 0x0389, 0x038A, 0x00BB, 0x038C, 0x00BD, 0x038E,
84 0x038F, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396, 0x0397,
85 0x0398, 0x0399, 0x039A, 0x039B, 0x039C, 0x039D, 0x039E, 0x039F, 0x03A0,
86 0x03A1, 0x0000, 0x03A3, 0x03A4, 0x03A5, 0x03A6, 0x03A7, 0x03A8, 0x03A9,
87 0x03AA, 0x03AB, 0x03AC, 0x03AD, 0x03AE, 0x03AF, 0x03B0, 0x03B1, 0x03B2,
88 0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7, 0x03B8, 0x03B9, 0x03BA, 0x03BB,
89 0x03BC, 0x03BD, 0x03BE, 0x03BF, 0x03C0, 0x03C1, 0x03C2, 0x03C3, 0x03C4,
90 0x03C5, 0x03C6, 0x03C7, 0x03C8, 0x03C9, 0x03CA, 0x03CB, 0x03CC, 0x03CD,
91 0x03CE, 0x0000,
92 };
93
94 const uint16_t kFX_MSWinTurkishUnicodes[128] = {
95 0x20AC, 0x0000, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x02C6,
96 0x2030, 0x0160, 0x2039, 0x0152, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
97 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x02DC, 0x2122, 0x0161,
98 0x203A, 0x0153, 0x0000, 0x0000, 0x0178, 0x00A0, 0x00A1, 0x00A2, 0x00A3,
99 0x00A4, 0x00A5, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x00AA, 0x00AB, 0x00AC,
100 0x00AD, 0x00AE, 0x00AF, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5,
101 0x00B6, 0x00B7, 0x00B8, 0x00B9, 0x00BA, 0x00BB, 0x00BC, 0x00BD, 0x00BE,
102 0x00BF, 0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x00C7,
103 0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF, 0x011E,
104 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x00D7, 0x00D8, 0x00D9,
105 0x00DA, 0x00DB, 0x00DC, 0x0130, 0x015E, 0x00DF, 0x00E0, 0x00E1, 0x00E2,
106 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7, 0x00E8, 0x00E9, 0x00EA, 0x00EB,
107 0x00EC, 0x00ED, 0x00EE, 0x00EF, 0x011F, 0x00F1, 0x00F2, 0x00F3, 0x00F4,
108 0x00F5, 0x00F6, 0x00F7, 0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x0131,
109 0x015F, 0x00FF,
110 };
111
112 const uint16_t kFX_MSWinHebrewUnicodes[128] = {
113 0x20AC, 0x0000, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x02C6,
114 0x2030, 0x0000, 0x2039, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
115 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x02DC, 0x2122, 0x0000,
116 0x203A, 0x0000, 0x0000, 0x0000, 0x0000, 0x00A0, 0x00A1, 0x00A2, 0x00A3,
117 0x20AA, 0x00A5, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x00D7, 0x00AB, 0x00AC,
118 0x00AD, 0x00AE, 0x00AF, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5,
119 0x00B6, 0x00B7, 0x00B8, 0x00B9, 0x00F7, 0x00BB, 0x00BC, 0x00BD, 0x00BE,
120 0x00BF, 0x05B0, 0x05B1, 0x05B2, 0x05B3, 0x05B4, 0x05B5, 0x05B6, 0x05B7,
121 0x05B8, 0x05B9, 0x0000, 0x05BB, 0x05BC, 0x05BD, 0x05BE, 0x05BF, 0x05C0,
122 0x05C1, 0x05C2, 0x05C3, 0x05F0, 0x05F1, 0x05F2, 0x05F3, 0x05F4, 0x0000,
123 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x05D0, 0x05D1, 0x05D2,
124 0x05D3, 0x05D4, 0x05D5, 0x05D6, 0x05D7, 0x05D8, 0x05D9, 0x05DA, 0x05DB,
125 0x05DC, 0x05DD, 0x05DE, 0x05DF, 0x05E0, 0x05E1, 0x05E2, 0x05E3, 0x05E4,
126 0x05E5, 0x05E6, 0x05E7, 0x05E8, 0x05E9, 0x05EA, 0x0000, 0x0000, 0x200E,
127 0x200F, 0x0000,
128 };
129
130 const uint16_t kFX_MSWinArabicUnicodes[128] = {
131 0x20AC, 0x067E, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x02C6,
132 0x2030, 0x0679, 0x2039, 0x0152, 0x0686, 0x0698, 0x0688, 0x06AF, 0x2018,
133 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x06A9, 0x2122, 0x0691,
134 0x203A, 0x0153, 0x200C, 0x200D, 0x06BA, 0x00A0, 0x060C, 0x00A2, 0x00A3,
135 0x00A4, 0x00A5, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x06BE, 0x00AB, 0x00AC,
136 0x00AD, 0x00AE, 0x00AF, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5,
137 0x00B6, 0x00B7, 0x00B8, 0x00B9, 0x061B, 0x00BB, 0x00BC, 0x00BD, 0x00BE,
138 0x061F, 0x06C1, 0x0621, 0x0622, 0x0623, 0x0624, 0x0625, 0x0626, 0x0627,
139 0x0628, 0x0629, 0x062A, 0x062B, 0x062C, 0x062D, 0x062E, 0x062F, 0x0630,
140 0x0631, 0x0632, 0x0633, 0x0634, 0x0635, 0x0636, 0x00D7, 0x0637, 0x0638,
141 0x0639, 0x063A, 0x0640, 0x0641, 0x0642, 0x0643, 0x00E0, 0x0644, 0x00E2,
142 0x0645, 0x0646, 0x0647, 0x0648, 0x00E7, 0x00E8, 0x00E9, 0x00EA, 0x00EB,
143 0x0649, 0x064A, 0x00EE, 0x00EF, 0x064B, 0x064C, 0x064D, 0x064E, 0x00F4,
144 0x064F, 0x0650, 0x00F7, 0x0651, 0x00F9, 0x0652, 0x00FB, 0x00FC, 0x200E,
145 0x200F, 0x06D2,
146 };
147
148 const uint16_t kFX_MSWinBalticUnicodes[128] = {
149 0x20AC, 0x0000, 0x201A, 0x0000, 0x201E, 0x2026, 0x2020, 0x2021, 0x0000,
150 0x2030, 0x0000, 0x2039, 0x0000, 0x00A8, 0x02C7, 0x00B8, 0x0000, 0x2018,
151 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x2122, 0x0000,
152 0x203A, 0x0000, 0x00AF, 0x02DB, 0x0000, 0x00A0, 0x0000, 0x00A2, 0x00A3,
153 0x00A4, 0x0000, 0x00A6, 0x00A7, 0x00D8, 0x00A9, 0x0156, 0x00AB, 0x00AC,
154 0x00AD, 0x00AE, 0x00C6, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5,
155 0x00B6, 0x00B7, 0x00F8, 0x00B9, 0x0157, 0x00BB, 0x00BC, 0x00BD, 0x00BE,
156 0x00E6, 0x0104, 0x012E, 0x0100, 0x0106, 0x00C4, 0x00C5, 0x0118, 0x0112,
157 0x010C, 0x00C9, 0x0179, 0x0116, 0x0122, 0x0136, 0x012A, 0x013B, 0x0160,
158 0x0143, 0x0145, 0x00D3, 0x014C, 0x00D5, 0x00D6, 0x00D7, 0x0172, 0x0141,
159 0x015A, 0x016A, 0x00DC, 0x017B, 0x017D, 0x00DF, 0x0105, 0x012F, 0x0101,
160 0x0107, 0x00E4, 0x00E5, 0x0119, 0x0113, 0x010D, 0x00E9, 0x017A, 0x0117,
161 0x0123, 0x0137, 0x012B, 0x013C, 0x0161, 0x0144, 0x0146, 0x00F3, 0x014D,
162 0x00F5, 0x00F6, 0x00F7, 0x0173, 0x0142, 0x015B, 0x016B, 0x00FC, 0x017C,
163 0x017E, 0x02D9,
164 };
165
166 struct FX_CHARSET_MAP {
167 FX_Charset charset;
168 FX_CodePage codepage;
169 };
170
171 const FX_CHARSET_MAP kFXCharset2CodePageTable[] = {
172 {FX_Charset::kANSI, FX_CodePage::kMSWin_WesternEuropean},
173 {FX_Charset::kDefault, FX_CodePage::kDefANSI},
174 {FX_Charset::kSymbol, FX_CodePage::kSymbol},
175 {FX_Charset::kMAC_Roman, FX_CodePage::kMAC_Roman},
176 {FX_Charset::kMAC_ShiftJIS, FX_CodePage::kMAC_ShiftJIS},
177 {FX_Charset::kMAC_Korean, FX_CodePage::kMAC_Korean},
178 {FX_Charset::kMAC_ChineseSimplified, FX_CodePage::kMAC_ChineseSimplified},
179 {FX_Charset::kMAC_ChineseTraditional, FX_CodePage::kMAC_ChineseTraditional},
180 {FX_Charset::kMAC_Hebrew, FX_CodePage::kMAC_Hebrew},
181 {FX_Charset::kMAC_Arabic, FX_CodePage::kMAC_Arabic},
182 {FX_Charset::kMAC_Greek, FX_CodePage::kMAC_Greek},
183 {FX_Charset::kMAC_Turkish, FX_CodePage::kMAC_Turkish},
184 {FX_Charset::kMAC_Thai, FX_CodePage::kMAC_Thai},
185 {FX_Charset::kMAC_EasternEuropean, FX_CodePage::kMAC_EasternEuropean},
186 {FX_Charset::kMAC_Cyrillic, FX_CodePage::kMAC_Cyrillic},
187 {FX_Charset::kShiftJIS, FX_CodePage::kShiftJIS},
188 {FX_Charset::kHangul, FX_CodePage::kHangul},
189 {FX_Charset::kJohab, FX_CodePage::kJohab},
190 {FX_Charset::kChineseSimplified, FX_CodePage::kChineseSimplified},
191 {FX_Charset::kChineseTraditional, FX_CodePage::kChineseTraditional},
192 {FX_Charset::kMSWin_Greek, FX_CodePage::kMSWin_Greek},
193 {FX_Charset::kMSWin_Turkish, FX_CodePage::kMSWin_Turkish},
194 {FX_Charset::kMSWin_Vietnamese, FX_CodePage::kMSWin_Vietnamese},
195 {FX_Charset::kMSWin_Hebrew, FX_CodePage::kMSWin_Hebrew},
196 {FX_Charset::kMSWin_Arabic, FX_CodePage::kMSWin_Arabic},
197 {FX_Charset::kMSWin_Baltic, FX_CodePage::kMSWin_Baltic},
198 {FX_Charset::kMSWin_Cyrillic, FX_CodePage::kMSWin_Cyrillic},
199 {FX_Charset::kThai, FX_CodePage::kMSDOS_Thai},
200 {FX_Charset::kMSWin_EasternEuropean, FX_CodePage::kMSWin_EasternEuropean},
201 {FX_Charset::kUS, FX_CodePage::kMSDOS_US},
202 {FX_Charset::kOEM, FX_CodePage::kMSDOS_WesternEuropean},
203 };
204
205 } // namespace
206
207 const FX_CharsetUnicodes kFX_CharsetUnicodes[8] = {
208 {FX_Charset::kThai, kFX_MSDOSThaiUnicodes},
209 {FX_Charset::kMSWin_EasternEuropean, kFX_MSWinEasternEuropeanUnicodes},
210 {FX_Charset::kMSWin_Cyrillic, kFX_MSWinCyrillicUnicodes},
211 {FX_Charset::kMSWin_Greek, kFX_MSWinGreekUnicodes},
212 {FX_Charset::kMSWin_Turkish, kFX_MSWinTurkishUnicodes},
213 {FX_Charset::kMSWin_Hebrew, kFX_MSWinHebrewUnicodes},
214 {FX_Charset::kMSWin_Arabic, kFX_MSWinArabicUnicodes},
215 {FX_Charset::kMSWin_Baltic, kFX_MSWinBalticUnicodes},
216 };
217
FX_GetACP()218 FX_CodePage FX_GetACP() {
219 #if BUILDFLAG(IS_WIN)
220 return static_cast<FX_CodePage>(GetACP());
221 #else
222 return FX_CodePage::kDefANSI;
223 #endif
224 }
225
FX_GetCodePageFromCharset(FX_Charset charset)226 FX_CodePage FX_GetCodePageFromCharset(FX_Charset charset) {
227 auto* result = std::lower_bound(
228 std::begin(kFXCharset2CodePageTable), std::end(kFXCharset2CodePageTable),
229 charset, [](const FX_CHARSET_MAP& iter, const FX_Charset& charset) {
230 return iter.charset < charset;
231 });
232 if (result != std::end(kFXCharset2CodePageTable) &&
233 result->charset == charset) {
234 return result->codepage;
235 }
236 return FX_CodePage::kFailure;
237 }
238
FX_GetCharsetFromCodePage(FX_CodePage codepage)239 FX_Charset FX_GetCharsetFromCodePage(FX_CodePage codepage) {
240 for (const auto& it : kFXCharset2CodePageTable) {
241 if (it.codepage == codepage)
242 return it.charset;
243 }
244 return FX_Charset::kANSI;
245 }
246
FX_GetCharsetFromInt(int value)247 FX_Charset FX_GetCharsetFromInt(int value) {
248 switch (value) {
249 case static_cast<int>(FX_Charset::kANSI):
250 case static_cast<int>(FX_Charset::kDefault):
251 case static_cast<int>(FX_Charset::kSymbol):
252 case static_cast<int>(FX_Charset::kMAC_Roman):
253 case static_cast<int>(FX_Charset::kMAC_ShiftJIS):
254 case static_cast<int>(FX_Charset::kMAC_Korean):
255 case static_cast<int>(FX_Charset::kMAC_ChineseSimplified):
256 case static_cast<int>(FX_Charset::kMAC_ChineseTraditional):
257 case static_cast<int>(FX_Charset::kMAC_Hebrew):
258 case static_cast<int>(FX_Charset::kMAC_Arabic):
259 case static_cast<int>(FX_Charset::kMAC_Greek):
260 case static_cast<int>(FX_Charset::kMAC_Turkish):
261 case static_cast<int>(FX_Charset::kMAC_Thai):
262 case static_cast<int>(FX_Charset::kMAC_EasternEuropean):
263 case static_cast<int>(FX_Charset::kMAC_Cyrillic):
264 case static_cast<int>(FX_Charset::kShiftJIS):
265 case static_cast<int>(FX_Charset::kHangul):
266 case static_cast<int>(FX_Charset::kJohab):
267 case static_cast<int>(FX_Charset::kChineseSimplified):
268 case static_cast<int>(FX_Charset::kChineseTraditional):
269 case static_cast<int>(FX_Charset::kMSWin_Greek):
270 case static_cast<int>(FX_Charset::kMSWin_Turkish):
271 case static_cast<int>(FX_Charset::kMSWin_Vietnamese):
272 case static_cast<int>(FX_Charset::kMSWin_Hebrew):
273 case static_cast<int>(FX_Charset::kMSWin_Arabic):
274 case static_cast<int>(FX_Charset::kMSWin_Baltic):
275 case static_cast<int>(FX_Charset::kMSWin_Cyrillic):
276 case static_cast<int>(FX_Charset::kThai):
277 case static_cast<int>(FX_Charset::kMSWin_EasternEuropean):
278 case static_cast<int>(FX_Charset::kUS):
279 case static_cast<int>(FX_Charset::kOEM):
280 return static_cast<FX_Charset>(value);
281 default:
282 return FX_Charset::kANSI;
283 }
284 }
285
FX_CharSetIsCJK(FX_Charset uCharset)286 bool FX_CharSetIsCJK(FX_Charset uCharset) {
287 return (uCharset == FX_Charset::kChineseSimplified) ||
288 (uCharset == FX_Charset::kChineseTraditional) ||
289 (uCharset == FX_Charset::kHangul) ||
290 (uCharset == FX_Charset::kShiftJIS);
291 }
292
FX_WideCharToMultiByte(FX_CodePage codepage,WideStringView wstr,pdfium::span<char> buf)293 size_t FX_WideCharToMultiByte(FX_CodePage codepage,
294 WideStringView wstr,
295 pdfium::span<char> buf) {
296 #if BUILDFLAG(IS_WIN)
297 int input_len = pdfium::base::checked_cast<int>(wstr.GetLength());
298 int output_len = pdfium::base::checked_cast<int>(buf.size());
299 return WideCharToMultiByte(static_cast<UINT>(codepage), 0,
300 wstr.unterminated_c_str(), input_len, buf.data(),
301 output_len, nullptr, nullptr);
302 #else
303 size_t len = 0;
304 for (size_t i = 0; i < wstr.GetLength(); i++) {
305 if (wstr[i] < 0x100) {
306 if (len < buf.size())
307 buf[len] = static_cast<char>(wstr[i]);
308 len++;
309 }
310 }
311 return len;
312 #endif
313 }
314
FX_MultiByteToWideChar(FX_CodePage codepage,ByteStringView bstr,pdfium::span<wchar_t> buf)315 size_t FX_MultiByteToWideChar(FX_CodePage codepage,
316 ByteStringView bstr,
317 pdfium::span<wchar_t> buf) {
318 #if BUILDFLAG(IS_WIN)
319 const int input_len = pdfium::base::checked_cast<int>(bstr.GetLength());
320 const int output_len = pdfium::base::checked_cast<int>(buf.size());
321 return MultiByteToWideChar(static_cast<UINT>(codepage), 0,
322 bstr.unterminated_c_str(), input_len, buf.data(),
323 output_len);
324 #else
325 size_t wlen = 0;
326 for (size_t i = 0; i < bstr.GetLength(); i++) {
327 if (wlen < buf.size())
328 buf[wlen] = reinterpret_cast<uint8_t>(bstr[i]);
329 wlen++;
330 }
331 return wlen;
332 #endif
333 }
334