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// Copyright 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "DiscIO/VolumeFileBlobReader.h"
#include "DiscIO/Filesystem.h"
#include "DiscIO/Volume.h"
namespace DiscIO
{
std::unique_ptr<VolumeFileBlobReader> VolumeFileBlobReader::Create(const Volume& volume,
const FileSystem& file_system,
const std::string& file_path)
{
if (!file_system.IsValid())
return nullptr;
std::unique_ptr<FileInfo> file_info = file_system.FindFileInfo(file_path);
if (!file_info || file_info->IsDirectory())
return nullptr;
return std::unique_ptr<VolumeFileBlobReader>{
new VolumeFileBlobReader(volume, file_system, std::move(file_info))};
}
VolumeFileBlobReader::VolumeFileBlobReader(const Volume& volume, const FileSystem& file_system,
std::unique_ptr<FileInfo> file_info)
: m_volume(volume), m_file_system(file_system), m_file_info(std::move(file_info))
{
}
u64 VolumeFileBlobReader::GetDataSize() const
{
return m_file_info->GetSize();
}
u64 VolumeFileBlobReader::GetRawSize() const
{
return GetDataSize();
}
bool VolumeFileBlobReader::Read(u64 offset, u64 length, u8* out_ptr)
{
if (offset + length > m_file_info->GetSize())
return false;
return m_volume.Read(m_file_info->GetOffset() + offset, length, out_ptr,
m_file_system.GetPartition());
}
} // namespace
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