1 #include "quacrc32.h"

     2 

     3 #include "zlib.h"

     4 

     5 QuaCrc32::QuaCrc32()

     6 {

     7 	reset();

     8 }

     9 

    10 quint32 QuaCrc32::calculate(const QByteArray &data)

    11 {

    12 	return crc32( crc32(0L, Z_NULL, 0), (const Bytef*)data.data(), data.size() );

    13 }

    14 

    15 void QuaCrc32::reset()

    16 {

    17 	checksum = crc32(0L, Z_NULL, 0);

    18 }

    19 

    20 void QuaCrc32::update(const QByteArray &buf)

    21 {

    22 	checksum = crc32( checksum, (const Bytef*)buf.data(), buf.size() );

    23 }

    24 

    25 quint32 QuaCrc32::value()

    26 {

    27 	return checksum;

    28 }