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//
// Checksum.cpp
//
// Library: Foundation
// Package: Core
// Module: Checksum
//
// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Checksum.h"
#if defined(POCO_UNBUNDLED)
#include <zlib.h>
#else
#error #include "Poco/zlib.h"
#endif
namespace Poco {
Checksum::Checksum():
_type(TYPE_CRC32),
_value(crc32(0L, Z_NULL, 0))
{
}
Checksum::Checksum(Type t):
_type(t),
_value(0)
{
if (t == TYPE_CRC32)
_value = crc32(0L, Z_NULL, 0);
else
_value = adler32(0L, Z_NULL, 0);
}
Checksum::~Checksum()
{
}
void Checksum::update(const char* data, unsigned length)
{
if (_type == TYPE_ADLER32)
_value = adler32(_value, reinterpret_cast<const Bytef*>(data), length);
else
_value = crc32(_value, reinterpret_cast<const Bytef*>(data), length);
}
} // namespace Poco
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