QuaAdler32 Class Reference

Adler32 checksum. More...

#include <quazip/quaadler32.h>

Inheritance diagram for QuaAdler32:

Collaboration diagram for QuaAdler32:

Public Member Functions
	QuaAdler32 ()
quint32	calculate (const QByteArray &data)
	Calculates the checksum for data. More...
void	reset ()
	Resets the calculation on a checksun for a stream. More...
void	update (const QByteArray &buf)
	Updates the calculated checksum for the stream. More...
quint32	value ()
	Value of the checksum calculated for the stream passed throw update(). More...

Private Attributes
quint32	checksum

Detailed Description

This class wrappers the adler32 function with the QuaChecksum32 interface. See QuaChecksum32 for more info.

Definition at line 38 of file quaadler32.h.

Constructor & Destructor Documentation

QuaAdler32::QuaAdler32

(

)

Definition at line 30 of file quaadler32.cpp.

References reset().

{
    reset();
}

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Member Function Documentation

quint32 QuaAdler32::calculate ( const QByteArray &  data )

virtual

data source data

Returns

data checksum

This function has no efect on the value returned by value().

Implements QuaChecksum32.

Definition at line 35 of file quaadler32.cpp.

{
    return adler32( adler32(0L, Z_NULL, 0), (const Bytef*)data.data(), data.size() );
}

void QuaAdler32::reset ( )

virtual

Implements QuaChecksum32.

Definition at line 40 of file quaadler32.cpp.

References checksum.

Referenced by QuaAdler32().

{
    checksum = adler32(0L, Z_NULL, 0);
}

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void QuaAdler32::update ( const QByteArray &  buf )

virtual

buf next portion of data from the stream

Implements QuaChecksum32.

Definition at line 45 of file quaadler32.cpp.

References checksum.

{
    checksum = adler32( checksum, (const Bytef*)buf.data(), buf.size() );
}

quint32 QuaAdler32::value ( )

virtual

Returns

checksum

Implements QuaChecksum32.

Definition at line 50 of file quaadler32.cpp.

References checksum.

{
    return checksum;
}

Field Documentation

quint32 QuaAdler32::checksum

private

Definition at line 51 of file quaadler32.h.

Referenced by reset(), update(), and value().

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

• src/ckb/quazip/quaadler32.h
• src/ckb/quazip/quaadler32.cpp