1 | // |
---|
2 | // Base64Encoder.cpp |
---|
3 | // |
---|
4 | // $Id: //poco/1.3/Foundation/src/Base64Encoder.cpp#2 $ |
---|
5 | // |
---|
6 | // Library: Foundation |
---|
7 | // Package: Streams |
---|
8 | // Module: Base64 |
---|
9 | // |
---|
10 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
---|
11 | // and Contributors. |
---|
12 | // |
---|
13 | // Permission is hereby granted, free of charge, to any person or organization |
---|
14 | // obtaining a copy of the software and accompanying documentation covered by |
---|
15 | // this license (the "Software") to use, reproduce, display, distribute, |
---|
16 | // execute, and transmit the Software, and to prepare derivative works of the |
---|
17 | // Software, and to permit third-parties to whom the Software is furnished to |
---|
18 | // do so, all subject to the following: |
---|
19 | // |
---|
20 | // The copyright notices in the Software and this entire statement, including |
---|
21 | // the above license grant, this restriction and the following disclaimer, |
---|
22 | // must be included in all copies of the Software, in whole or in part, and |
---|
23 | // all derivative works of the Software, unless such copies or derivative |
---|
24 | // works are solely in the form of machine-executable object code generated by |
---|
25 | // a source language processor. |
---|
26 | // |
---|
27 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
---|
28 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
---|
29 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
---|
30 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
---|
31 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
---|
32 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
---|
33 | // DEALINGS IN THE SOFTWARE. |
---|
34 | // |
---|
35 | |
---|
36 | |
---|
37 | #include <Poco/Base64Encoder.h> |
---|
38 | |
---|
39 | |
---|
40 | namespace Poco { |
---|
41 | |
---|
42 | |
---|
43 | const unsigned char Base64EncoderBuf::OUT_ENCODING[64] = |
---|
44 | { |
---|
45 | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', |
---|
46 | 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', |
---|
47 | 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', |
---|
48 | 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', |
---|
49 | 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', |
---|
50 | 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', |
---|
51 | 'w', 'x', 'y', 'z', '0', '1', '2', '3', |
---|
52 | '4', '5', '6', '7', '8', '9', '+', '/' |
---|
53 | }; |
---|
54 | |
---|
55 | |
---|
56 | Base64EncoderBuf::Base64EncoderBuf(std::ostream& ostr): |
---|
57 | _groupLength(0), |
---|
58 | _pos(0), |
---|
59 | _lineLength(72), |
---|
60 | _ostr(ostr) |
---|
61 | { |
---|
62 | } |
---|
63 | |
---|
64 | |
---|
65 | Base64EncoderBuf::~Base64EncoderBuf() |
---|
66 | { |
---|
67 | try |
---|
68 | { |
---|
69 | close(); |
---|
70 | } |
---|
71 | catch (...) |
---|
72 | { |
---|
73 | } |
---|
74 | } |
---|
75 | |
---|
76 | |
---|
77 | void Base64EncoderBuf::setLineLength(int lineLength) |
---|
78 | { |
---|
79 | _lineLength = lineLength; |
---|
80 | } |
---|
81 | |
---|
82 | |
---|
83 | int Base64EncoderBuf::getLineLength() const |
---|
84 | { |
---|
85 | return _lineLength; |
---|
86 | } |
---|
87 | |
---|
88 | |
---|
89 | int Base64EncoderBuf::writeToDevice(char c) |
---|
90 | { |
---|
91 | _group[_groupLength++] = (unsigned char) c; |
---|
92 | if (_groupLength == 3) |
---|
93 | { |
---|
94 | unsigned char idx; |
---|
95 | idx = _group[0] >> 2; |
---|
96 | _ostr.put(OUT_ENCODING[idx]); |
---|
97 | idx = ((_group[0] & 0x03) << 4) | (_group[1] >> 4); |
---|
98 | _ostr.put(OUT_ENCODING[idx]); |
---|
99 | idx = ((_group[1] & 0x0F) << 2) | (_group[2] >> 6); |
---|
100 | _ostr.put(OUT_ENCODING[idx]); |
---|
101 | idx = _group[2] & 0x3F; |
---|
102 | _ostr.put(OUT_ENCODING[idx]); |
---|
103 | _pos += 4; |
---|
104 | if (_lineLength > 0 && _pos >= _lineLength) |
---|
105 | { |
---|
106 | _ostr << "\r\n"; |
---|
107 | _pos = 0; |
---|
108 | } |
---|
109 | _groupLength = 0; |
---|
110 | } |
---|
111 | return _ostr ? charToInt(c) : -1; |
---|
112 | } |
---|
113 | |
---|
114 | |
---|
115 | int Base64EncoderBuf::close() |
---|
116 | { |
---|
117 | sync(); |
---|
118 | if (_groupLength == 1) |
---|
119 | { |
---|
120 | _group[1] = 0; |
---|
121 | unsigned char idx; |
---|
122 | idx = _group[0] >> 2; |
---|
123 | _ostr.put(OUT_ENCODING[idx]); |
---|
124 | idx = ((_group[0] & 0x03) << 4) | (_group[1] >> 4); |
---|
125 | _ostr.put(OUT_ENCODING[idx]); |
---|
126 | _ostr << "=="; |
---|
127 | } |
---|
128 | else if (_groupLength == 2) |
---|
129 | { |
---|
130 | _group[2] = 0; |
---|
131 | unsigned char idx; |
---|
132 | idx = _group[0] >> 2; |
---|
133 | _ostr.put(OUT_ENCODING[idx]); |
---|
134 | idx = ((_group[0] & 0x03) << 4) | (_group[1] >> 4); |
---|
135 | _ostr.put(OUT_ENCODING[idx]); |
---|
136 | idx = ((_group[1] & 0x0F) << 2) | (_group[2] >> 6); |
---|
137 | _ostr.put(OUT_ENCODING[idx]); |
---|
138 | _ostr.put('='); |
---|
139 | } |
---|
140 | _ostr.flush(); |
---|
141 | _groupLength = 0; |
---|
142 | return _ostr ? 0 : -1; |
---|
143 | } |
---|
144 | |
---|
145 | |
---|
146 | Base64EncoderIOS::Base64EncoderIOS(std::ostream& ostr): _buf(ostr) |
---|
147 | { |
---|
148 | poco_ios_init(&_buf); |
---|
149 | } |
---|
150 | |
---|
151 | |
---|
152 | Base64EncoderIOS::~Base64EncoderIOS() |
---|
153 | { |
---|
154 | } |
---|
155 | |
---|
156 | |
---|
157 | int Base64EncoderIOS::close() |
---|
158 | { |
---|
159 | return _buf.close(); |
---|
160 | } |
---|
161 | |
---|
162 | |
---|
163 | Base64EncoderBuf* Base64EncoderIOS::rdbuf() |
---|
164 | { |
---|
165 | return &_buf; |
---|
166 | } |
---|
167 | |
---|
168 | |
---|
169 | Base64Encoder::Base64Encoder(std::ostream& ostr): Base64EncoderIOS(ostr), std::ostream(&_buf) |
---|
170 | { |
---|
171 | } |
---|
172 | |
---|
173 | |
---|
174 | Base64Encoder::~Base64Encoder() |
---|
175 | { |
---|
176 | } |
---|
177 | |
---|
178 | |
---|
179 | } // namespace Poco |
---|