This library provides functions to convert a base64 encoded value to 32bit signed/unsigned integer. More...

#include <vector>
#include <string>

Include dependency graph for base64Decoder.h:

This graph shows which files directly or indirectly include this file:

Functions
long	base64_decode (const std::string &in, const unsigned int startByteIndex, const unsigned int endByteIndex, const unsigned int size, bool isSigned)
	Function decodes a Base64 string and returns the decoded string (or only parts of it) up to a maximum of 8 byte signed/unsigned data types wrapped in an int64 return value. More...

std::vector< unsigned char >	base64_to_binary (const std::string &in)
	Decodes a base64 encoded string to bytes. More...

long	convertValue (const unsigned long value, const unsigned int size, bool isSigned)
	Converts a 32bit signed/unsigned integer from its bit representation to signed 64bit integer. More...

unsigned long	getValueAt (std::vector< unsigned char > &bytes, const unsigned int startByteIndex, const unsigned int endByteIndex)
	Concatenates bytes from index a to index b of a byte array. More...

Detailed Description

This library provides functions to convert a base64 encoded value to 32bit signed/unsigned integer.

Definition in file base64Decoder.h.

Function Documentation

long base64_decode	(	const std::string &	in,
		const unsigned int	startByteIndex,
		const unsigned int	endByteIndex,
		const unsigned int	size,
		bool	isSigned
	)

inline

Function decodes a Base64 string and returns the decoded string (or only parts of it) up to a maximum of 8 byte signed/unsigned data types wrapped in an int64 return value.

This Fuction decodes a Base64 string and returns a specific byte or multiple bytes at the given indices, where this information is converted as a desired datatype and returned as int64. Example for decoding a Base64 string, getting the second byte, reading this value as an int16: base64_decode("Afb/", 1, 2, 16, true).

Parameters

[in]	in	input Base64 string.
[in]	startByteIndex	index number (starting with zero) of the first byte of the value that has to be read.
[in]	endByteIndex	index number (starting with zero) of the last byte of the value that has to be read.
[in]	size	size in bits of the value that is to be read from the decoded string.
[in]	isSigned	whether the value from the decoded string is to be read as signed or unsigned.

Returns: Decoded information as an int64.

Definition at line 134 of file base64Decoder.h.

std::vector<unsigned char> base64_to_binary ( const std::string & in )

inline

Decodes a base64 encoded string to bytes.

Parameters

[in] in input string to be decoded

Returns: byte array decoded from the input string

Author: azawadzki - from: https://stackoverflow.com/questions/180947/base64-decode-snippet-in-c

Definition at line 18 of file base64Decoder.h.

long convertValue	(	const unsigned long	value,
		const unsigned int	size,
		bool	isSigned
	)

inline

Converts a 32bit signed/unsigned integer from its bit representation to signed 64bit integer.

Parameters

[in]	value	input number encoded in 64 bits
[in]	size	byte size the output is supposed to have
[in]	isSigned	should the output be signed or unsigned?

Returns: output signed/unsigned 32bit integer inside a signed 64bit integer

Definition at line 91 of file base64Decoder.h.

unsigned long getValueAt	(	std::vector< unsigned char > &	bytes,
		const unsigned int	startByteIndex,
		const unsigned int	endByteIndex
	)

inline

Concatenates bytes from index a to index b of a byte array.

Parameters

[in]	bytes	byte array
[in]	startByteIndex	start index a
[in]	endByteIndex	end index b

Returns: unsigned 64bit integer containing the concatenated bytes

Definition at line 68 of file base64Decoder.h.

Functions

Detailed Description

Function Documentation