ZStreamR_SHA1 Class Reference

A read filter stream that SHA1 hashes data read through it. More...

#include <ZStream_SHA1.h>

Inheritance diagram for ZStreamR_SHA1:

List of all members.

Public Member Functions
	ZStreamR_SHA1 (uint8 oDigest[20], const ZStreamR &iStreamSource)
	Constructor for use inline.
virtual size_t	Imp_CountReadable ()
	Returns the number of bytes guaranteed to be readable without blocking.

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Detailed Description

A read filter stream that SHA1 hashes data read through it.

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Constructor & Destructor Documentation

ZStreamR_SHA1::ZStreamR_SHA1	(	uint8	oDigest[20],
		const ZStreamR &	iStreamSource
	)

Constructor for use inline.

This constructor remembers the address of oDigest, and when destroyed will place the digest in that array. This constructor is useful when a ZStreamR is already being used to read some data, but for which we would like to gather a digest. e.g. going from this:

sourceStream.Read(dest, destSize);

to this:

uint8 theDigest[20];
ZStreamR_SHA1(theDigest, sourceStream).Read(dest, destSize);

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Member Function Documentation

size_t ZStreamR_SHA1::Imp_CountReadable

(

)

[virtual]

Returns the number of bytes guaranteed to be readable without blocking.

If the stream does not or cannot know this information it should return zero. A zero return thus does not mean no data is available, simply that a subsequent Read or Skip may block indefinitely.

Reimplemented from ZStreamR.

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

• src/stream/ZStream_SHA1.h
• src/stream/ZStream_SHA1.cpp

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