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Compression.cpp
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93 lines (73 loc) · 3.19 KB
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
#include "pch.h"
#include "Public/winget/Compression.h"
namespace AppInstaller::Compression
{
Compressor::Compressor(DWORD algorithm)
{
THROW_IF_WIN32_BOOL_FALSE(CreateCompressor(algorithm, nullptr, &m_compressor));
}
std::vector<uint8_t> Compressor::Compress(std::string_view data)
{
std::vector<uint8_t> result;
if (!data.empty())
{
SIZE_T compressedBufferSize = 0;
THROW_HR_IF(E_UNEXPECTED, ::Compress(m_compressor.get(), data.data(), data.size(), nullptr, 0, &compressedBufferSize));
THROW_LAST_ERROR_IF(GetLastError() != ERROR_INSUFFICIENT_BUFFER);
result.resize(compressedBufferSize);
SIZE_T compressedDataSize = 0;
THROW_IF_WIN32_BOOL_FALSE(::Compress(m_compressor.get(), data.data(), data.size(), &result[0], result.size(), &compressedDataSize));
result.resize(compressedDataSize);
}
return result;
}
void Compressor::Reset()
{
THROW_IF_WIN32_BOOL_FALSE(ResetCompressor(m_compressor.get()));
}
void Compressor::SetInformation(COMPRESS_INFORMATION_CLASS information, DWORD value)
{
THROW_IF_WIN32_BOOL_FALSE(SetCompressorInformation(m_compressor.get(), information, &value, sizeof(value)));
}
DWORD Compressor::GetInformation(COMPRESS_INFORMATION_CLASS information)
{
DWORD result = 0;
THROW_IF_WIN32_BOOL_FALSE(QueryCompressorInformation(m_compressor.get(), information, &result, sizeof(result)));
return result;
}
Decompressor::Decompressor(DWORD algorithm)
{
THROW_IF_WIN32_BOOL_FALSE(CreateDecompressor(algorithm, nullptr, &m_decompressor));
}
std::vector<uint8_t> Decompressor::Decompress(const std::vector<uint8_t>& data)
{
std::vector<uint8_t> result;
if (!data.empty())
{
SIZE_T decompressedBufferSize = 0;
THROW_HR_IF(E_UNEXPECTED, ::Decompress(m_decompressor.get(), data.data(), data.size(), nullptr, 0, &decompressedBufferSize));
THROW_LAST_ERROR_IF(GetLastError() != ERROR_INSUFFICIENT_BUFFER);
result.resize(decompressedBufferSize);
SIZE_T decompressedDataSize = 0;
THROW_IF_WIN32_BOOL_FALSE(::Decompress(m_decompressor.get(), data.data(), data.size(), &result[0], result.size(), &decompressedDataSize));
result.resize(decompressedDataSize);
}
return result;
}
void Decompressor::Reset()
{
THROW_IF_WIN32_BOOL_FALSE(ResetDecompressor(m_decompressor.get()));
}
void Decompressor::SetInformation(COMPRESS_INFORMATION_CLASS information, DWORD value)
{
THROW_IF_WIN32_BOOL_FALSE(SetDecompressorInformation(m_decompressor.get(), information, &value, sizeof(value)));
}
DWORD Decompressor::GetInformation(COMPRESS_INFORMATION_CLASS information)
{
DWORD result = 0;
THROW_IF_WIN32_BOOL_FALSE(QueryDecompressorInformation(m_decompressor.get(), information, &result, sizeof(result)));
return result;
}
}