| // Copyright (C) 2006 Davis E. King ([email protected]) | |
| // License: Boost Software License See LICENSE.txt for the full license. | |
| namespace dlib | |
| { | |
| class base64 | |
| { | |
| /*! | |
| INITIAL VALUE | |
| - bad_value == 100 | |
| - encode_table == a pointer to an array of 64 chars | |
| - where x is a 6 bit value the following is true: | |
| - encode_table[x] == the base64 encoding of x | |
| - decode_table == a pointer to an array of UCHAR_MAX chars | |
| - where x is any char value: | |
| - if (x is a valid character in the base64 coding scheme) then | |
| - decode_table[x] == the 6 bit value that x encodes | |
| - else | |
| - decode_table[x] == bad_value | |
| CONVENTION | |
| - The state of this object never changes so just refer to its | |
| initial value. | |
| !*/ | |
| public: | |
| // this is here for backwards compatibility with older versions of dlib. | |
| typedef base64 kernel_1a; | |
| class decode_error : public dlib::error { public: | |
| decode_error( const std::string& e) : error(e) {}}; | |
| base64 ( | |
| ); | |
| virtual ~base64 ( | |
| ); | |
| enum line_ending_type | |
| { | |
| CR, // i.e. "\r" | |
| LF, // i.e. "\n" | |
| CRLF // i.e. "\r\n" | |
| }; | |
| line_ending_type line_ending ( | |
| ) const; | |
| void set_line_ending ( | |
| line_ending_type eol_style_ | |
| ); | |
| void encode ( | |
| std::istream& in, | |
| std::ostream& out | |
| ) const; | |
| void decode ( | |
| std::istream& in, | |
| std::ostream& out | |
| ) const; | |
| private: | |
| char* encode_table; | |
| unsigned char* decode_table; | |
| const unsigned char bad_value; | |
| line_ending_type eol_style; | |
| // restricted functions | |
| base64(base64&); // copy constructor | |
| base64& operator=(base64&); // assignment operator | |
| }; | |
| } | |