ConvertBase64
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
/* This file is derived from the libb64 project which itself was released to public domain.
* For details, see http://sourceforge.net/projects/libb64. Original code by Chris Venter
* c++ wrapper for a base64 encoding and decoding algorithm
*/
#ifndef OSGDB_CONVERTBASE64_H
#define OSGDB_CONVERTBASE64_H 1
#include <iostream>
#include <string>
#include <vector>
#include <osgDB/Export>
namespace osgDB
{
const int BUFFERSIZE = 8192;
typedef enum
{
step_a, step_b, step_c, step_d
} base64_decodestep;
typedef enum
{
step_A, step_B, step_C
} base64_encodestep;
typedef struct
{
base64_encodestep step;
char result;
int stepcount;
} base64_encodestate;
inline void base64_init_encodestate(base64_encodestate* state_in)
{
state_in->step = step_A;
state_in->result = 0;
state_in->stepcount = 0;
}
typedef struct
{
base64_decodestep step;
char plainchar;
} base64_decodestate;
inline void base64_init_decodestate(base64_decodestate* state_in)
{
state_in->step = step_a;
state_in->plainchar = 0;
}
class OSGDB_EXPORT Base64encoder
{
public:
Base64encoder(int buffersize_in = BUFFERSIZE):
_buffersize(buffersize_in)
{
base64_init_encodestate(&_state);
}
int encode(char value_in);
int encode(const char* code_in, const int length_in, char* plaintext_out);
int encode_end(char* plaintext_out);
void encode(std::istream& istream_in, std::ostream& ostream_in);
void encode(const char* chars_in, int length_in, std::string& code_out);
private:
base64_encodestate _state;
int _buffersize;
};
class OSGDB_EXPORT Base64decoder
{
public:
Base64decoder(int buffersize_in = BUFFERSIZE):
_buffersize(buffersize_in)
{
base64_init_decodestate(&_state);
}
int decode(char value_in);
int decode(const char* code_in, const int length_in, char* plaintext_out);
void decode(std::istream& istream_in, std::ostream& ostream_in);
// Decode strings, returns one char* of appropriate size
// Note that deallocation of char* is up to the caller of this method
char* decode(const std::vector<std::string>& str_in, std::vector<unsigned int>& pos_out);
private:
base64_decodestate _state;
int _buffersize;
};
} // namespace osgDB
#endif // BASE64_DECODE_H
osgDB::Base64decoder::decode
int decode(char value_in)
osgDB::Base64decoder::decode
void decode(std::istream &istream_in, std::ostream &ostream_in)
osgDB::Base64decoder::decode
char * decode(const std::vector< std::string > &str_in, std::vector< unsigned int > &pos_out)
osgDB::Base64decoder::Base64decoder
Base64decoder(int buffersize_in=BUFFERSIZE)
Definition ConvertBase64:96
osgDB::Base64decoder::decode
int decode(const char *code_in, const int length_in, char *plaintext_out)
osgDB::Base64encoder::encode
void encode(const char *chars_in, int length_in, std::string &code_out)
osgDB::Base64encoder::Base64encoder
Base64encoder(int buffersize_in=BUFFERSIZE)
Definition ConvertBase64:72
osgDB::Base64encoder::encode
void encode(std::istream &istream_in, std::ostream &ostream_in)
osgDB::Base64encoder::encode_end
int encode_end(char *plaintext_out)
osgDB::Base64encoder::encode
int encode(char value_in)
osgDB::Base64encoder::encode
int encode(const char *code_in, const int length_in, char *plaintext_out)
osgDB
Definition Archive:24
osgDB::base64_encodestep
base64_encodestep
Definition ConvertBase64:38
osgDB::step_B
@ step_B
Definition ConvertBase64:39
osgDB::step_A
@ step_A
Definition ConvertBase64:39
osgDB::step_C
@ step_C
Definition ConvertBase64:39
osgDB::base64_init_decodestate
void base64_init_decodestate(base64_decodestate *state_in)
Definition ConvertBase64:63
osgDB::base64_decodestep
base64_decodestep
Definition ConvertBase64:33
osgDB::step_d
@ step_d
Definition ConvertBase64:34
osgDB::step_b
@ step_b
Definition ConvertBase64:34
osgDB::step_a
@ step_a
Definition ConvertBase64:34
osgDB::step_c
@ step_c
Definition ConvertBase64:34
osgDB::base64_init_encodestate
void base64_init_encodestate(base64_encodestate *state_in)
Definition ConvertBase64:49
osgDB::BUFFERSIZE
const int BUFFERSIZE
Definition ConvertBase64:30
Export
OSGDB_EXPORT
#define OSGDB_EXPORT
Definition osgDB/Export:39
osgDB::base64_decodestate
Definition ConvertBase64:58
osgDB::base64_decodestate::step
base64_decodestep step
Definition ConvertBase64:59
osgDB::base64_decodestate::plainchar
char plainchar
Definition ConvertBase64:60
osgDB::base64_encodestate
Definition ConvertBase64:43
osgDB::base64_encodestate::stepcount
int stepcount
Definition ConvertBase64:46
osgDB::base64_encodestate::step
base64_encodestep step
Definition ConvertBase64:44
osgDB::base64_encodestate::result
char result
Definition ConvertBase64:45