[80] | 1 | // |
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| 2 | // Base64Encoder.h |
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| 3 | // |
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| 4 | // $Id: //poco/1.3/Foundation/include/Poco/Base64Encoder.h#3 $ |
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| 5 | // |
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| 6 | // Library: Foundation |
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| 7 | // Package: Streams |
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| 8 | // Module: Base64 |
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| 9 | // |
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| 10 | // Definition of class Base64Encoder. |
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| 11 | // |
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| 12 | // Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. |
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| 13 | // and Contributors. |
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| 14 | // |
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| 15 | // Permission is hereby granted, free of charge, to any person or organization |
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| 16 | // obtaining a copy of the software and accompanying documentation covered by |
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| 17 | // this license (the "Software") to use, reproduce, display, distribute, |
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| 18 | // execute, and transmit the Software, and to prepare derivative works of the |
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| 19 | // Software, and to permit third-parties to whom the Software is furnished to |
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| 20 | // do so, all subject to the following: |
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| 21 | // |
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| 22 | // The copyright notices in the Software and this entire statement, including |
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| 23 | // the above license grant, this restriction and the following disclaimer, |
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| 24 | // must be included in all copies of the Software, in whole or in part, and |
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| 25 | // all derivative works of the Software, unless such copies or derivative |
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| 26 | // works are solely in the form of machine-executable object code generated by |
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| 27 | // a source language processor. |
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| 28 | // |
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| 29 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 30 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 31 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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| 32 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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| 33 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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| 34 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 35 | // DEALINGS IN THE SOFTWARE. |
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| 36 | // |
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| 37 | |
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| 38 | |
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| 39 | #ifndef Foundation_Base64Encoder_INCLUDED |
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| 40 | #define Foundation_Base64Encoder_INCLUDED |
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| 41 | |
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| 42 | |
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| 43 | #include "Poco/Foundation.h" |
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| 44 | #include "Poco/UnbufferedStreamBuf.h" |
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| 45 | #include <ostream> |
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| 46 | |
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| 47 | |
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| 48 | namespace Poco { |
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| 49 | |
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| 50 | |
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| 51 | class Foundation_API Base64EncoderBuf: public UnbufferedStreamBuf |
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| 52 | /// This streambuf base64-encodes all data written |
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| 53 | /// to it and forwards it to a connected |
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| 54 | /// ostream. |
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| 55 | { |
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| 56 | public: |
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| 57 | Base64EncoderBuf(std::ostream& ostr); |
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| 58 | ~Base64EncoderBuf(); |
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| 59 | |
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| 60 | int close(); |
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| 61 | /// Closes the stream buffer. |
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| 62 | |
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| 63 | void setLineLength(int lineLength); |
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| 64 | /// Specify the line length. |
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| 65 | /// |
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| 66 | /// After the given number of characters have been written, |
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| 67 | /// a newline character will be written. |
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| 68 | /// |
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| 69 | /// Specify 0 for an unlimited line length. |
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| 70 | |
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| 71 | int getLineLength() const; |
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| 72 | /// Returns the currently set line length. |
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| 73 | |
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| 74 | private: |
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| 75 | int writeToDevice(char c); |
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| 76 | |
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| 77 | unsigned char _group[3]; |
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| 78 | int _groupLength; |
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| 79 | int _pos; |
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| 80 | int _lineLength; |
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| 81 | std::ostream& _ostr; |
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| 82 | |
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| 83 | static const unsigned char OUT_ENCODING[64]; |
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| 84 | |
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| 85 | friend class Base64DecoderBuf; |
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| 86 | |
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| 87 | Base64EncoderBuf(const Base64EncoderBuf&); |
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| 88 | Base64EncoderBuf& operator = (const Base64EncoderBuf&); |
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| 89 | }; |
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| 90 | |
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| 91 | |
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| 92 | class Foundation_API Base64EncoderIOS: public virtual std::ios |
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| 93 | /// The base class for Base64Encoder. |
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| 94 | /// |
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| 95 | /// This class is needed to ensure the correct initialization |
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| 96 | /// order of the stream buffer and base classes. |
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| 97 | { |
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| 98 | public: |
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| 99 | Base64EncoderIOS(std::ostream& ostr); |
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| 100 | ~Base64EncoderIOS(); |
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| 101 | int close(); |
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| 102 | Base64EncoderBuf* rdbuf(); |
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| 103 | |
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| 104 | protected: |
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| 105 | Base64EncoderBuf _buf; |
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| 106 | |
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| 107 | private: |
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| 108 | Base64EncoderIOS(const Base64EncoderIOS&); |
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| 109 | Base64EncoderIOS& operator = (const Base64EncoderIOS&); |
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| 110 | }; |
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| 111 | |
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| 112 | |
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| 113 | class Foundation_API Base64Encoder: public Base64EncoderIOS, public std::ostream |
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| 114 | /// This ostream base64-encodes all data |
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| 115 | /// written to it and forwards it to |
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| 116 | /// a connected ostream. |
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| 117 | /// Always call close() when done |
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| 118 | /// writing data, to ensure proper |
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| 119 | /// completion of the encoding operation. |
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| 120 | { |
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| 121 | public: |
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| 122 | Base64Encoder(std::ostream& ostr); |
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| 123 | ~Base64Encoder(); |
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| 124 | |
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| 125 | private: |
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| 126 | Base64Encoder(const Base64Encoder&); |
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| 127 | Base64Encoder& operator = (const Base64Encoder&); |
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| 128 | }; |
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| 129 | |
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| 130 | |
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| 131 | } // namespace Poco |
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| 132 | |
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| 133 | |
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| 134 | #endif // Foundation_Base64Encoder_INCLUDED |
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