blob: bdd2ae11bd12c3a2d4fa99aea0303142f7d84e31 (
plain)
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
|
/******************************************************************************
*
* unicodertf.cpp - SWFilter descendant to convert UTF-8 to RTF tags
*
* $Id: unicodertf.cpp 3081 2014-03-05 19:52:08Z chrislit $
*
* Copyright 2001-2013 CrossWire Bible Society (http://www.crosswire.org)
* CrossWire Bible Society
* P. O. Box 2528
* Tempe, AZ 85280-2528
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include <stdio.h>
#include <unicodertf.h>
#include <swbuf.h>
SWORD_NAMESPACE_START
UnicodeRTF::UnicodeRTF() {
}
char UnicodeRTF::processText(SWBuf &text, const SWKey *key, const SWModule *module)
{
const unsigned char *from;
char digit[10];
unsigned long ch;
signed short utf16;
unsigned char from2[7];
SWBuf orig = text;
from = (const unsigned char *)orig.c_str();
// -------------------------------
for (text = ""; *from; from++) {
ch = 0;
//case: ANSI
if ((*from & 128) != 128) {
text += *from;
continue;
}
//case: Invalid UTF-8 (illegal continuing byte in initial position)
if ((*from & 128) && ((*from & 64) != 64)) {
continue;
}
//case: 2+ byte codepoint
from2[0] = *from;
from2[0] <<= 1;
int subsequent;
for (subsequent = 1; (from2[0] & 128) && (subsequent < 7); subsequent++) {
from2[0] <<= 1;
from2[subsequent] = from[subsequent];
from2[subsequent] &= 63;
ch <<= 6;
ch |= from2[subsequent];
}
subsequent--;
from2[0] <<= 1;
char significantFirstBits = 8 - (2+subsequent);
ch |= (((short)from2[0]) << (((6*subsequent)+significantFirstBits)-8));
from += subsequent;
if (ch < 0x10000) {
utf16 = (signed short)ch;
text += '\\';
text += 'u';
sprintf(digit, "%d", utf16);
text += digit;
text += '?';
}
else {
utf16 = (signed short)((ch - 0x10000) / 0x400 + 0xD800);
text += '\\';
text += 'u';
sprintf(digit, "%d", utf16);
text += digit;
text += '?';
utf16 = (signed short)((ch - 0x10000) % 0x400 + 0xDC00);
text += '\\';
text += 'u';
sprintf(digit, "%d", utf16);
text += digit;
text += '?';
}
}
return 0;
}
SWORD_NAMESPACE_END
|
