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// Copyright (C) 2006 Davis E. King ([email protected])
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_BASE64_KERNEl_1_
#define DLIB_BASE64_KERNEl_1_
#include "../algs.h"
#include "base64_kernel_abstract.h"
#include <iosfwd>
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
};
}
#ifdef NO_MAKEFILE
#include "base64_kernel_1.cpp"
#endif
#endif // DLIB_BASE64_KERNEl_1_
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