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
|
/*
* This file is part of the Code::Blocks IDE and licensed under the GNU Lesser General Public License, version 3
* http://www.gnu.org/licenses/lgpl-3.0.html
*
* $Revision: 12578 $
* $Id: base64.cpp 12578 2021-12-14 08:57:56Z wh11204 $
* $HeadURL: file:///svn/p/codeblocks/code/trunk/src/sdk/base64.cpp $
*/
//*********************************************************************
//* Base64 - a simple base64 encoder and decoder.
//*
//* Copyright (c) 1999, Bob Withers - bwit@pobox.com
//*
//* This code may be freely used for any purpose, either personal
//* or commercial, provided the authors copyright notice remains
//* intact.
//*********************************************************************
//
// converted to wxWindows by Frank Bu?
//
#include "base64.h"
#include <wx/unichar.h>
const wxChar fillchar = '=';
// 00000000001111111111222222
// 01234567890123456789012345
static wxString cvt = _T("ABCDEFGHIJKLMNOPQRSTUVWXYZ"
// 22223333333333444444444455
// 67890123456789012345678901
"abcdefghijklmnopqrstuvwxyz"
// 555555556666
// 234567890123
"0123456789+/");
wxString wxBase64::Encode(const wxString& data)
{
return wxBase64::Encode((const wxUint8*)data.c_str(), data.Length());
}
wxString wxBase64::Encode(const wxUint8* pData, size_t len)
{
size_t c;
wxString ret;
ret.Alloc(len * 4 / 3 + len * 2);
for (size_t i = 0; i < len; ++i)
{
c = (pData[i] >> 2) & 0x3f;
ret.Append(cvt[c], 1);
c = (pData[i] << 4) & 0x3f;
if (++i < len)
c |= (pData[i] >> 4) & 0x0f;
ret.Append(cvt[c], 1);
if (i < len)
{
c = (pData[i] << 2) & 0x3f;
if (++i < len)
c |= (pData[i] >> 6) & 0x03;
ret.Append(cvt[c], 1);
}
else
{
++i;
ret.Append(fillchar, 1);
}
if (i < len)
{
c = pData[i] & 0x3f;
ret.Append(cvt[c], 1);
}
else
{
ret.Append(fillchar, 1);
}
}
return ret;
}
wxString wxBase64::Decode(const wxString& data)
{
int c;
int c1;
size_t len = data.Length();
wxString ret;
ret.Alloc(data.Length() * 3 / 4);
for (size_t i = 0; i < len; ++i)
{
// TODO: check all Find results for -1 as result of wrong input data for release build
c = cvt.Find(data[i]);
wxASSERT_MSG(c >= 0, _T("invalid base64 input"));
++i;
c1 = cvt.Find(data[i]);
wxASSERT_MSG(c1 >= 0, _T("invalid base64 input"));
c = (c << 2) | ((c1 >> 4) & 0x3);
ret.Append(static_cast<wxUniChar>(c), 1);
if (++i < len)
{
c = data[i];
if ((char)fillchar == c)
break;
c = cvt.Find(static_cast<wxUniChar>(c));
wxASSERT_MSG(c >= 0, _T("invalid base64 input"));
c1 = ((c1 << 4) & 0xf0) | ((c >> 2) & 0xf);
ret.Append(static_cast<wxUniChar>(c1), 1);
}
if (++i < len)
{
c1 = data[i];
if ((char)fillchar == c1)
break;
c1 = cvt.Find(static_cast<wxUniChar>(c1));
wxASSERT_MSG(c1 >= 0, _T("invalid base64 input"));
c = ((c << 6) & 0xc0) | c1;
ret.Append(static_cast<wxUniChar>(c), 1);
}
}
return ret;
}
|
