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