1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
#include "qisciicodec_p.h"
#ifndef TQT_NO_CODECS
#define TQValidChar(u) ((u) ? TQChar((u)) : TQChar::replacement)
/*!
\class TQIsciiCodec
\brief The TQIsciiCodec class provides conversion to and from the ISCII encoding.
\ingroup i18n
\internal
*/
TQIsciiCodec::TQIsciiCodec(int i)
: idx(i)
{
}
int TQIsciiCodec::mibEnum() const
{
/* There is no MIBEnum for Iscii */
return -3000-idx;
}
struct Codecs {
const char *name;
ushort base;
};
static const Codecs codecs [] = {
{ "Iscii-Dev", 0x900 },
{ "Iscii-Bng", 0x980 },
{ "Iscii-Pnj", 0xa00 },
{ "Iscii-Gjr", 0xa80 },
{ "Iscii-Ori", 0xb00 },
{ "Iscii-Tml", 0xb80 },
{ "Iscii-Tlg", 0xc00 },
{ "Iscii-Knd", 0xc80 },
{ "Iscii-Mlm", 0xd00 }
};
const char* TQIsciiCodec::name() const
{
return codecs[idx].name;
}
const char* TQIsciiCodec::mimeName() const
{
return codecs[idx].name;
}
int TQIsciiCodec::heuristicNameMatch(const char* hint) const
{
const char *p = strchr(hint, '.');
if (p)
p++;
else
p = hint;
if (TQString::fromLatin1(p).lower() == TQString::fromLatin1(codecs[idx].name).lower())
return 4;
else
return TQTextCodec::heuristicNameMatch(hint);
}
int TQIsciiCodec::heuristicContentMatch(const char*, int) const
{
return 0;
}
#define INV 0xff
/* iscii range from 0xa0 - 0xff */
static const uchar iscii_to_uni_table[0x60] = {
0x00, 0x01, 0x02, 0x03,
0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0e,
0x0f, 0x20, 0x0d, 0x12,
0x13, 0x14, 0x11, 0x15,
0x16, 0x17, 0x18, 0x19,
0x1a, 0x1b, 0x1c, 0x1d,
0x1e, 0x1f, 0x20, 0x21,
0x22, 0x23, 0x24, 0x25,
0x26, 0x27, 0x28, 0x29,
0x2a, 0x2b, 0x2c, 0x2d,
0x2e, 0x2f, 0x5f, 0x30,
0x31, 0x32, 0x33, 0x34,
0x35, 0x36, 0x37, 0x38,
0x39, INV, 0x3e, 0x3f,
0x40, 0x41, 0x42, 0x43,
0x46, 0x47, 0x48, 0x45,
0x4a, 0x4b, 0x4c, 0x49,
0x4d, 0x3c, 0x64, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x66, 0x67, 0x68,
0x69, 0x6a, 0x6b, 0x6c,
0x6d, 0x6e, 0x6f, 0x00,
0x00, 0x00, 0x00, 0x00
};
static const uchar uni_to_iscii_table[0x80] = {
0x00, 0xa1, 0xa2, 0xa3,
0x00, 0xa4, 0xa5, 0xa6,
0xa7, 0xa8, 0xa9, 0xaa,
0x00, 0xae, 0xab, 0xac,
0xad, 0xb2, 0xaf, 0xb0,
0xb1, 0xb3, 0xb4, 0xb5,
0xb6, 0xb7, 0xb8, 0xb9,
0xba, 0xbb, 0xbc, 0xbd,
0xbe, 0xbf, 0xc0, 0xc1,
0xc2, 0xc3, 0xc4, 0xc5,
0xc6, 0xc7, 0xc8, 0xc9,
0xca, 0xcb, 0xcc, 0xcd,
0xcf, 0xd0, 0xd1, 0xd2,
0xd3, 0xd4, 0xd5, 0xd6,
0xd7, 0xd8, 0x00, 0x00,
0xe9, 0x00, 0xda, 0xdb,
0xdc, 0xdd, 0xde, 0xdf,
0x00, 0xe3, 0xe0, 0xe1,
0xe2, 0xe7, 0xe4, 0xe5,
0xe6, 0xe8, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x01, 0x02, 0x03, 0x04, // decomposable into the uc codes listed here + nukta
0x05, 0x06, 0x07, 0xce,
0x00, 0x00, 0x00, 0x00,
0xea, 0x08, 0xf1, 0xf2,
0xf3, 0xf4, 0xf5, 0xf6,
0xf7, 0xf8, 0xf9, 0xfa,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00
};
static const uchar uni_to_iscii_pairs[] = {
0x00, 0x00,
0x15, 0x3c, // 0x958
0x16, 0x3c, // 0x959
0x17, 0x3c, // 0x95a
0x1c, 0x3c, // 0x95b
0x21, 0x3c, // 0x95c
0x22, 0x3c, // 0x95d
0x2b, 0x3c, // 0x95e
0x64, 0x64 // 0x965
};
TQCString TQIsciiCodec::fromUnicode(const TQString& uc, int& len_in_out) const
{
int l = uc.length();
if (len_in_out > 0)
l = TQMIN(l, len_in_out);
TQCString result(2*l); //worst case
const TQChar *data = uc.unicode();
uchar *ch = (uchar *)result.data();
int base = codecs[idx].base;
bool halant = FALSE;
for (int i =0; i < l; ++i) {
int pos = data[i].unicode() - base;
if (pos > 0 && pos < 0x80) {
uchar iscii = uni_to_iscii_table[pos];
if (iscii > 0x80) {
*ch++ = iscii;
} else if (iscii) {
const uchar *pair = uni_to_iscii_pairs + 2*iscii;
*ch++ = *pair++;
*ch++ = *pair++;
} else {
*ch++ = '?';
}
} else {
if (data[i].unicode() == 0x200c) { // ZWNJ
if (halant)
// Consonant Halant ZWNJ -> Consonant Halant Halant
*ch++ = 0xe8;
} else if (data[i].unicode() == 0x200d) { // ZWJ
if (halant)
// Consonant Halant ZWJ -> Consonant Halant Nukta
*ch++ = 0xe9;
} else {
*ch++ = '?';
}
}
halant = (pos == 0x4d);
}
len_in_out = ch - (uchar *)result.data();
result.truncate(len_in_out);
return result;
}
TQString TQIsciiCodec::toUnicode( const char* chars, int len_in ) const
{
TQString result;
result.setLength(len_in);
TQChar *uc = (TQChar *)result.unicode();
int base = codecs[idx].base;
bool halant = FALSE;
for (int i = 0; i < len_in; ++i) {
ushort ch = (uchar) chars[i];
if (ch < 0xa0)
*uc++ = TQValidChar(ch);
else {
ushort c = iscii_to_uni_table[ch - 0xa0];
if (halant && (c == INV || c == 0xe9)) {
// Consonant Halant INV -> Consonant Halant ZWJ
// Consonant Halant Nukta -> Consonant Halant ZWJ
*uc++ = TQChar(0x200d);
} else if (halant && c == 0xe8) {
// Consonant Halant Halant -> Consonant Halant ZWNJ
*uc++ = TQChar(0x200c);
} else {
*uc++ = TQChar(c+base);
}
}
halant = ((uchar)chars[i] == 0xe8);
}
return result;
}
#endif // TQT_NO_CODECS
|
