base64 Namespace Reference

Detailed Description

holds some functions for encoding and decoding base64 data

Functions

const string Base64Table ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/")

this lookup table defines the base64 encoding

string encode (char buf[], unsigned int len)

returns a string containing the base64 encoding of len bytes from buf

unsigned int decodeSize (const std::string &data)

returns the number of bytes which will be decoded from data

char * decode (const std::string &data)

returns a pointer to a newly allocated region contained the binary data decoded from data

bool decode (const std::string &data, char buf[], unsigned int len)

decodes data into buf, which you need to provide the size of in len

Variables

static const char fillchar = '='

used to mark partial words at the end

static const string::size_type np = string::npos

shorthand for the "no position" return code from string

const string::size_type DecodeTable []

Decode Table gives the index of any valid base64 character in the Base64 table].

Function Documentation

unsigned int base64::decodeSize ( const std::string & data )

returns the number of bytes which will be decoded from data

Does not check data for correctness, just counts the fill characters at the end of the string

Definition at line 117 of file Base64.cc.

Referenced by decode().

char * base64::decode ( const std::string & data )

returns a pointer to a newly allocated region contained the binary data decoded from data

If data is malformed NULL will be returned

Definition at line 138 of file Base64.cc.

Referenced by LoadSave::checkCreator(), and LoadSave::decodeInc().

bool base64::decode	(	const std::string &	data,
		char	buf[],
		unsigned int	len
	)

decodes data into buf, which you need to provide the size of in len

If buf is not large enough or data is malformed, false will be returned; otherwise true

Definition at line 147 of file Base64.cc.

Variable Documentation

const string::size_type base64::DecodeTable[]

Initial value:

 {
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,62,np,np,np,63,52,53,  
    54,55,56,57,58,59,60,61,np,np,  
    np,np,np,np,np, 0, 1, 2, 3, 4,  
    5, 6, 7, 8, 9,10,11,12,13,14,  
    15,16,17,18,19,20,21,22,23,24,  
    25,np,np,np,np,np,np,26,27,28,  
    29,30,31,32,33,34,35,36,37,38,  
    39,40,41,42,43,44,45,46,47,48,  
    49,50,51,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np,np,np,np,np,  
    np,np,np,np,np,np               
  }

Decode Table gives the index of any valid base64 character in the Base64 table].

65 == A, 97 == a, 48 == 0, 43 == +, 47 == /

Definition at line 43 of file Base64.cc.

Referenced by decode(), and decodeSize().