| QuaZIP quazip-0-4-4 | 
Checksum interface. More...
#include <quazip/quachecksum32.h>

| Public Member Functions | |
| virtual quint32 | calculate (const QByteArray &data)=0 | 
| Calculates the checksum for data. | |
| virtual void | reset ()=0 | 
| Resets the calculation on a checksun for a stream. | |
| virtual void | update (const QByteArray &buf)=0 | 
| Updates the calculated checksum for the stream. | |
| virtual quint32 | value ()=0 | 
| Value of the checksum calculated for the stream passed throw update(). | |
Checksum interface.
This is an interface for 32 bit checksums. Classes implementing this interface can calcunate a certin checksum in a single step:
QChecksum32 *crc32 = new QuaCrc32(); rasoult = crc32->calculate(data);
or by streaming the data:
QChecksum32 *crc32 = new QuaCrc32(); while(!fileA.atEnd()) crc32->update(fileA.read(bufSize)); resoultA = crc32->value(); crc32->reset(); while(!fileB.atEnd()) crc32->update(fileB.read(bufSize)); resoultB = crc32->value();
| virtual quint32 QuaChecksum32::calculate | ( | const QByteArray & | data | ) |  [pure virtual] | 
Calculates the checksum for data.
data source data
This function has no efect on the value returned by value().
Implemented in QuaAdler32, and QuaCrc32.
| virtual void QuaChecksum32::update | ( | const QByteArray & | buf | ) |  [pure virtual] | 
Updates the calculated checksum for the stream.
buf next portion of data from the stream
Implemented in QuaAdler32, and QuaCrc32.
| virtual quint32 QuaChecksum32::value | ( | ) |  [pure virtual] | 
Value of the checksum calculated for the stream passed throw update().
Implemented in QuaAdler32, and QuaCrc32.
 1.7.4
 1.7.4