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/*
* unancient.cpp
* -------------
* Purpose: Implementation file for extracting modules from compressed files supported by libancient
* Notes : (currently none)
* Authors: OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#include "stdafx.h"
#include "unancient.h"
#ifdef MPT_WITH_ANCIENT
#include <ancient/ancient.hpp>
#endif // MPT_WITH_ANCIENT
OPENMPT_NAMESPACE_BEGIN
#ifdef MPT_WITH_ANCIENT
CAncientArchive::CAncientArchive(FileReader &file)
: ArchiveBase(file)
{
inFile.Rewind();
try
{
auto dataView = inFile.GetPinnedView();
if(!ancient::Decompressor::detect(mpt::byte_cast<const std::uint8_t*>(dataView.data()), dataView.size()))
{
return;
}
ancient::Decompressor decompressor{mpt::byte_cast<const std::uint8_t*>(dataView.data()), dataView.size(), true, true};
if(decompressor.getImageSize() || decompressor.getImageOffset())
{
// skip disk images
return;
}
ArchiveFileInfo fileInfo;
fileInfo.name = inFile.GetOptionalFileName().value_or(P_(""));
fileInfo.type = ArchiveFileType::Normal;
fileInfo.size = decompressor.getRawSize().value_or(0);
contents.push_back(fileInfo);
} catch(const ancient::Error &)
{
return;
}
}
CAncientArchive::~CAncientArchive()
{
return;
}
bool CAncientArchive::ExtractFile(std::size_t index)
{
if(index >= contents.size())
{
return false;
}
data.clear();
inFile.Rewind();
try
{
auto dataView = inFile.GetPinnedView();
ancient::Decompressor decompressor{mpt::byte_cast<const std::uint8_t*>(dataView.data()), dataView.size(), true, true};
data = mpt::buffer_cast<std::vector<char>>(decompressor.decompress(true));
} catch (const ancient::Error &)
{
return false;
}
return (data.size() > 0);
}
#endif // MPT_WITH_ANCIENT
OPENMPT_NAMESPACE_END
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