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qisciicodec.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtCore module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
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16**-
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18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
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21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
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37**-
38****************************************************************************/-
39#include "qisciicodec_p.h"-
40#include "qtextcodec_p.h"-
41#include "qlist.h"-
42-
43#ifndef QT_NO_CODECS-
44-
45QT_BEGIN_NAMESPACE-
46-
47/*!-
48 \class QIsciiCodec-
49 \inmodule QtCore-
50 \brief The QIsciiCodec class provides conversion to and from the ISCII encoding.-
51-
52 \internal-
53*/-
54-
55-
56struct Codecs {-
57 const char name[10];-
58 ushort base;-
59};-
60-
61static const Codecs codecs [] = {-
62 { "iscii-dev", 0x900 },-
63 { "iscii-bng", 0x980 },-
64 { "iscii-pnj", 0xa00 },-
65 { "iscii-gjr", 0xa80 },-
66 { "iscii-ori", 0xb00 },-
67 { "iscii-tml", 0xb80 },-
68 { "iscii-tlg", 0xc00 },-
69 { "iscii-knd", 0xc80 },-
70 { "iscii-mlm", 0xd00 }-
71};-
72-
73QTextCodec *QIsciiCodec::create(const char *name)-
74{-
75 for (int i = 0; i < 9; ++i) {
i < 9Description
TRUEevaluated 45 times by 1 test
Evaluated by:
  • tst_QTextCodec
FALSEnever evaluated
0-45
76 if (qTextCodecNameMatch(name, codecs[i].name))
qTextCodecName...odecs[i].name)Description
TRUEevaluated 9 times by 1 test
Evaluated by:
  • tst_QTextCodec
FALSEevaluated 36 times by 1 test
Evaluated by:
  • tst_QTextCodec
9-36
77 return new QIsciiCodec(i);
executed 9 times by 1 test: return new QIsciiCodec(i);
Executed by:
  • tst_QTextCodec
9
78 }
executed 36 times by 1 test: end of block
Executed by:
  • tst_QTextCodec
36
79 return 0;
never executed: return 0;
0
80}-
81-
82QIsciiCodec::~QIsciiCodec()-
83{-
84}-
85-
86QByteArray QIsciiCodec::name() const-
87{-
88 return codecs[idx].name;
executed 1656 times by 1 test: return codecs[idx].name;
Executed by:
  • tst_QTextCodec
1656
89}-
90-
91int QIsciiCodec::mibEnum() const-
92{-
93 /* There is no MIBEnum for Iscii */-
94 return -3000-idx;
never executed: return -3000-idx;
0
95}-
96-
97static const uchar inv = 0xFF;-
98-
99/* iscii range from 0xa0 - 0xff */-
100static const uchar iscii_to_uni_table[0x60] = {-
101 0x00, 0x01, 0x02, 0x03,-
102 0x05, 0x06, 0x07, 0x08,-
103 0x09, 0x0a, 0x0b, 0x0e,-
104 0x0f, 0x20, 0x0d, 0x12,-
105-
106 0x13, 0x14, 0x11, 0x15,-
107 0x16, 0x17, 0x18, 0x19,-
108 0x1a, 0x1b, 0x1c, 0x1d,-
109 0x1e, 0x1f, 0x20, 0x21,-
110-
111 0x22, 0x23, 0x24, 0x25,-
112 0x26, 0x27, 0x28, 0x29,-
113 0x2a, 0x2b, 0x2c, 0x2d,-
114 0x2e, 0x2f, 0x5f, 0x30,-
115-
116 0x31, 0x32, 0x33, 0x34,-
117 0x35, 0x36, 0x37, 0x38,-
118 0x39, inv, 0x3e, 0x3f,-
119 0x40, 0x41, 0x42, 0x43,-
120-
121 0x46, 0x47, 0x48, 0x45,-
122 0x4a, 0x4b, 0x4c, 0x49,-
123 0x4d, 0x3c, 0x64, 0x00,-
124 0x00, 0x00, 0x00, 0x00,-
125-
126 0x00, 0x66, 0x67, 0x68,-
127 0x69, 0x6a, 0x6b, 0x6c,-
128 0x6d, 0x6e, 0x6f, 0x00,-
129 0x00, 0x00, 0x00, 0x00-
130};-
131-
132static const uchar uni_to_iscii_table[0x80] = {-
133 0x00, 0xa1, 0xa2, 0xa3,-
134 0x00, 0xa4, 0xa5, 0xa6,-
135 0xa7, 0xa8, 0xa9, 0xaa,-
136 0x00, 0xae, 0xab, 0xac,-
137-
138 0xad, 0xb2, 0xaf, 0xb0,-
139 0xb1, 0xb3, 0xb4, 0xb5,-
140 0xb6, 0xb7, 0xb8, 0xb9,-
141 0xba, 0xbb, 0xbc, 0xbd,-
142-
143 0xbe, 0xbf, 0xc0, 0xc1,-
144 0xc2, 0xc3, 0xc4, 0xc5,-
145 0xc6, 0xc7, 0xc8, 0xc9,-
146 0xca, 0xcb, 0xcc, 0xcd,-
147-
148 0xcf, 0xd0, 0xd1, 0xd2,-
149 0xd3, 0xd4, 0xd5, 0xd6,-
150 0xd7, 0xd8, 0x00, 0x00,-
151 0xe9, 0x00, 0xda, 0xdb,-
152-
153 0xdc, 0xdd, 0xde, 0xdf,-
154 0x00, 0xe3, 0xe0, 0xe1,-
155 0xe2, 0xe7, 0xe4, 0xe5,-
156 0xe6, 0xe8, 0x00, 0x00,-
157-
158 0x00, 0x00, 0x00, 0x00,-
159 0x00, 0x00, 0x00, 0x00,-
160 0x01, 0x02, 0x03, 0x04, // decomposable into the uc codes listed here + nukta-
161 0x05, 0x06, 0x07, 0xce,-
162-
163 0x00, 0x00, 0x00, 0x00,-
164 0xea, 0x08, 0xf1, 0xf2,-
165 0xf3, 0xf4, 0xf5, 0xf6,-
166 0xf7, 0xf8, 0xf9, 0xfa,-
167-
168 0x00, 0x00, 0x00, 0x00,-
169 0x00, 0x00, 0x00, 0x00,-
170 0x00, 0x00, 0x00, 0x00,-
171 0x00, 0x00, 0x00, 0x00-
172};-
173-
174static const uchar uni_to_iscii_pairs[] = {-
175 0x00, 0x00,-
176 0x15, 0x3c, // 0x958-
177 0x16, 0x3c, // 0x959-
178 0x17, 0x3c, // 0x95a-
179 0x1c, 0x3c, // 0x95b-
180 0x21, 0x3c, // 0x95c-
181 0x22, 0x3c, // 0x95d-
182 0x2b, 0x3c, // 0x95e-
183 0x64, 0x64 // 0x965-
184};-
185-
186-
187QByteArray QIsciiCodec::convertFromUnicode(const QChar *uc, int len, ConverterState *state) const-
188{-
189 char replacement = '?';-
190 bool halant = false;-
191 if (state) {
stateDescription
TRUEevaluated 1440 times by 1 test
Evaluated by:
  • tst_QTextCodec
FALSEnever evaluated
0-1440
192 if (state->flags & ConvertInvalidToNull)
state->flags &...tInvalidToNullDescription
TRUEevaluated 1440 times by 1 test
Evaluated by:
  • tst_QTextCodec
FALSEnever evaluated
0-1440
193 replacement = 0;
executed 1440 times by 1 test: replacement = 0;
Executed by:
  • tst_QTextCodec
1440
194 halant = state->state_data[0];-
195 }
executed 1440 times by 1 test: end of block
Executed by:
  • tst_QTextCodec
1440
196 int invalid = 0;-
197-
198 QByteArray result(2 * len, Qt::Uninitialized); //worst case-
199-
200 uchar *ch = reinterpret_cast<uchar *>(result.data());-
201-
202 const int base = codecs[idx].base;-
203-
204 for (int i =0; i < len; ++i) {
i < lenDescription
TRUEevaluated 2862 times by 1 test
Evaluated by:
  • tst_QTextCodec
FALSEevaluated 1440 times by 1 test
Evaluated by:
  • tst_QTextCodec
1440-2862
205 const ushort codePoint = uc[i].unicode();-
206-
207 /* The low 7 bits of ISCII is plain ASCII. However, we go all the-
208 * way up to 0xA0 such that we can roundtrip with convertToUnicode()'s-
209 * behavior. */-
210 if(codePoint < 0xA0) {
codePoint < 0xA0Description
TRUEevaluated 2862 times by 1 test
Evaluated by:
  • tst_QTextCodec
FALSEnever evaluated
0-2862
211 *ch++ = static_cast<uchar>(codePoint);-
212 continue;
executed 2862 times by 1 test: continue;
Executed by:
  • tst_QTextCodec
2862
213 }-
214-
215 const int pos = codePoint - base;-
216 if (pos > 0 && pos < 0x80) {
pos > 0Description
TRUEnever evaluated
FALSEnever evaluated
pos < 0x80Description
TRUEnever evaluated
FALSEnever evaluated
0
217 uchar iscii = uni_to_iscii_table[pos];-
218 if (iscii > 0x80) {
iscii > 0x80Description
TRUEnever evaluated
FALSEnever evaluated
0
219 *ch++ = iscii;-
220 } else if (iscii) {
never executed: end of block
isciiDescription
TRUEnever evaluated
FALSEnever evaluated
0
221 Q_ASSERT((2 * iscii) < (sizeof(uni_to_iscii_pairs) / sizeof(uni_to_iscii_pairs[0])));-
222 const uchar *pair = uni_to_iscii_pairs + 2*iscii;-
223 *ch++ = *pair++;-
224 *ch++ = *pair++;-
225 } else {
never executed: end of block
0
226 *ch++ = replacement;-
227 ++invalid;-
228 }
never executed: end of block
0
229 } else {-
230 if (uc[i].unicode() == 0x200c) { // ZWNJ
uc[i].unicode() == 0x200cDescription
TRUEnever evaluated
FALSEnever evaluated
0
231 if (halant)
halantDescription
TRUEnever evaluated
FALSEnever evaluated
0
232 // Consonant Halant ZWNJ -> Consonant Halant Halant-
233 *ch++ = 0xe8;
never executed: *ch++ = 0xe8;
0
234 } else if (uc[i].unicode() == 0x200d) { // ZWJ
never executed: end of block
uc[i].unicode() == 0x200dDescription
TRUEnever evaluated
FALSEnever evaluated
0
235 if (halant)
halantDescription
TRUEnever evaluated
FALSEnever evaluated
0
236 // Consonant Halant ZWJ -> Consonant Halant Nukta-
237 *ch++ = 0xe9;
never executed: *ch++ = 0xe9;
0
238 } else {
never executed: end of block
0
239 *ch++ = replacement;-
240 ++invalid;-
241 }
never executed: end of block
0
242 }-
243 halant = (pos == 0x4d);-
244 }
never executed: end of block
0
245 result.truncate(ch - (uchar *)result.data());-
246-
247 if (state) {
stateDescription
TRUEevaluated 1440 times by 1 test
Evaluated by:
  • tst_QTextCodec
FALSEnever evaluated
0-1440
248 state->invalidChars += invalid;-
249 state->state_data[0] = halant;-
250 }
executed 1440 times by 1 test: end of block
Executed by:
  • tst_QTextCodec
1440
251 return result;
executed 1440 times by 1 test: return result;
Executed by:
  • tst_QTextCodec
1440
252}-
253-
254QString QIsciiCodec::convertToUnicode(const char* chars, int len, ConverterState *state) const-
255{-
256 bool halant = false;-
257 if (state) {
stateDescription
TRUEnever evaluated
FALSEnever evaluated
0
258 halant = state->state_data[0];-
259 }
never executed: end of block
0
260-
261 QString result(len, Qt::Uninitialized);-
262 QChar *uc = result.data();-
263-
264 const int base = codecs[idx].base;-
265-
266 for (int i = 0; i < len; ++i) {
i < lenDescription
TRUEnever evaluated
FALSEnever evaluated
0
267 ushort ch = (uchar) chars[i];-
268 if (ch < 0xa0)
ch < 0xa0Description
TRUEnever evaluated
FALSEnever evaluated
0
269 *uc++ = ch;
never executed: *uc++ = ch;
0
270 else {-
271 ushort c = iscii_to_uni_table[ch - 0xa0];-
272 if (halant && (c == inv || c == 0xe9)) {
halantDescription
TRUEnever evaluated
FALSEnever evaluated
c == invDescription
TRUEnever evaluated
FALSEnever evaluated
c == 0xe9Description
TRUEnever evaluated
FALSEnever evaluated
0
273 // Consonant Halant inv -> Consonant Halant ZWJ-
274 // Consonant Halant Nukta -> Consonant Halant ZWJ-
275 *uc++ = QChar(0x200d);-
276 } else if (halant && c == 0xe8) {
never executed: end of block
halantDescription
TRUEnever evaluated
FALSEnever evaluated
c == 0xe8Description
TRUEnever evaluated
FALSEnever evaluated
0
277 // Consonant Halant Halant -> Consonant Halant ZWNJ-
278 *uc++ = QChar(0x200c);-
279 } else {
never executed: end of block
0
280 *uc++ = QChar(c+base);-
281 }
never executed: end of block
0
282 }-
283 halant = ((uchar)chars[i] == 0xe8);-
284 }
never executed: end of block
0
285 result.resize(uc - result.unicode());-
286-
287 if (state) {
stateDescription
TRUEnever evaluated
FALSEnever evaluated
0
288 state->state_data[0] = halant;-
289 }
never executed: end of block
0
290 return result;
never executed: return result;
0
291}-
292-
293QT_END_NAMESPACE-
294-
295#endif // QT_NO_CODECS-
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