blob: 1bf8d3bed6ce4ca877665793de0aae0db4d3fd39 (
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
|
/******************************************************************************
*
* utf8latin1.cpp - SWFilter descendant to convert UTF-8 to Latin-1
*
* $Id: utf8latin1.cpp 2980 2013-09-14 21:51:47Z scribe $
*
* 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 <stdlib.h>
#include <stdio.h>
#include <utf8latin1.h>
#include <swbuf.h>
SWORD_NAMESPACE_START
UTF8Latin1::UTF8Latin1(char rchar) : replacementChar(rchar) {
}
char UTF8Latin1::processText(SWBuf &text, const SWKey *key, const SWModule *module)
{
unsigned char *from;
unsigned long uchar;
unsigned char significantFirstBits, subsequent;
if ((unsigned long)key < 2) {// hack, we're en(1)/de(0)ciphering
return (char)-1;
}
SWBuf orig = text;
from = (unsigned char*)orig.c_str();
// -------------------------------
for (text = ""; *from; from++) {
uchar = 0;
if ((*from & 128) != 128) {
// if (*from != ' ')
uchar = *from;
}
else if ((*from & 128) && ((*from & 64) != 64)) {
// error, do nothing
continue;
}
else {
*from <<= 1;
for (subsequent = 1; (*from & 128); subsequent++) {
*from <<= 1;
from[subsequent] &= 63;
uchar <<= 6;
uchar |= from[subsequent];
}
subsequent--;
*from <<=1;
significantFirstBits = 8 - (2+subsequent);
uchar |= (((short)*from) << (((6*subsequent)+significantFirstBits)-8));
from += subsequent;
}
if (uchar < 0xff) {
text += (unsigned char)uchar;
}
else {
text += replacementChar;
}
}
return 0;
}
SWORD_NAMESPACE_END
|
