PBase64 Class Reference

#include <cypher.h>

Inheritance diagram for PBase64:

List of all members.

Public Member Functions
	PBase64 ()
void	StartEncoding (PBoolean useCRLFs=PTrue)
void	ProcessEncoding (const PString &str)
void	ProcessEncoding (const char *cstr)
void	ProcessEncoding (const PBYTEArray &data)
void	ProcessEncoding (const void *dataBlock, PINDEX length)
PString	GetEncodedString ()
PString	CompleteEncoding ()
void	StartDecoding ()
PBoolean	ProcessDecoding (const PString &str)
PBoolean	ProcessDecoding (const char *cstr)
PBoolean	GetDecodedData (void *dataBlock, PINDEX length)
PBYTEArray	GetDecodedData ()
PBoolean	IsDecodeOK ()
Static Public Member Functions
static PString	Encode (const PString &str)
static PString	Encode (const char *cstr)
static PString	Encode (const PBYTEArray &data)
static PString	Encode (const void *dataBlock, PINDEX length)
static PString	Decode (const PString &str)
static PBoolean	Decode (const PString &str, PBYTEArray &data)
static PBoolean	Decode (const PString &str, void *dataBlock, PINDEX length)

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Detailed Description

This class is used to encode/decode data using the MIME standard base64 encoding mechanism as defined in RFC1521.

To encode a large block of data use the following seqeunce: {verbatim} PBase64 base; base.StartEncoding(); while (Read(dataChunk)) { base.ProcessEncoding(dataChunk); out << base.GetEncodedString(); } out << base.CompleteEncoding(); {verbatim}

if smaller blocks that fit easily in memory are to be encoded the Encode()# functions can be used to everything in one go.

To decode a large block of data use the following sequence: {verbatim}

PBase64 base; base.StartDecoding(); while (Read(str) && ProcessDecoding(str)) Write(base.GetDecodedData()); Write(base.GetDecodedData()); {verbatim}

if smaller blocks that fit easily in memory are to be decoded the Decode()# functions can be used to everything in one go.

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Constructor & Destructor Documentation

PBase64::PBase64

(

)

Construct a base 64 encoder/decoder and initialise both encode and decode members as in StartEncoding()# and StartDecoding()#.

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Member Function Documentation

PString PBase64::CompleteEncoding

(

)

Complete the base 64 encoding and return the remainder of the encoded Base64 string. Previous data may have been already removed by the GetInterim()# function.

Returns:

Base64 encoded string for the processed data.

static PBoolean PBase64::Decode	(	const PString &	str,
		void *	dataBlock,
		PINDEX	length
	)			[static]

static PBoolean PBase64::Decode	(	const PString &	str,
		PBYTEArray &	data
	)			[static]

static PString PBase64::Decode

(

const PString &

str

)

[static]

Convert a printable text string to binary data using the Internet MIME standard base 64 content transfer encoding.

The base64 string is checked and PTrue returned if all perfectly correct. If PFalse is returned then the string had extraneous or illegal characters in it that were ignored. This does not mean that the data is not valid, only that it is suspect.

Returns:

Base 64 string decoded from input string.

static PString PBase64::Encode	(	const void *	dataBlock,
		PINDEX	length
	)			[static]

static PString PBase64::Encode

(

const PBYTEArray &

data

)

[static]

static PString PBase64::Encode

(

const char *

cstr

)

[static]

static PString PBase64::Encode

(

const PString &

str

)

[static]

PBYTEArray PBase64::GetDecodedData

(

)

PBoolean PBase64::GetDecodedData	(	void *	dataBlock,
		PINDEX	length
	)

Get the data decoded so far from the Base64 strings processed.

Returns:

Decoded data for the processed Base64 string.

PString PBase64::GetEncodedString

(

)

Get the partial Base64 string for the data encoded so far.

Returns:

Base64 encoded string for the processed data.

PBoolean PBase64::IsDecodeOK

(

)

[inline]

Return a flag to indicate that the input was decoded without any extraneous or illegal characters in it that were ignored. This does not mean that the data is not valid, only that it is suspect.

Returns:

Decoded data for the processed Base64 string.

PBoolean PBase64::ProcessDecoding

(

const char *

cstr

)

PBoolean PBase64::ProcessDecoding

(

const PString &

str

)

Incorporate the specified data into the base 64 decoding.

Returns:

PTrue if block was last in the Base64 encoded string.

void PBase64::ProcessEncoding	(	const void *	dataBlock,
		PINDEX	length
	)

void PBase64::ProcessEncoding

(

const PBYTEArray &

data

)

void PBase64::ProcessEncoding

(

const char *

cstr

)

void PBase64::ProcessEncoding

(

const PString &

str

)

void PBase64::StartDecoding

(

)

void PBase64::StartEncoding

(

PBoolean

useCRLFs = PTrue

)

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The documentation for this class was generated from the following file:

• cypher.h

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