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47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
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#include "host_file.hpp"
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#include <boost/iostreams/device/file_descriptor.hpp>
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#include <boost/iostreams/operations.hpp>
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namespace FileSystem {
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class NativeFile final : public HLE::PXI::FS::File {
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public:
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boost::iostreams::file_descriptor_source source;
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public:
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NativeFile(int file_descriptor) : source(file_descriptor, boost::iostreams::never_close_handle) {
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}
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HLE::OS::ResultAnd<> Open(HLE::PXI::FS::FileContext&, bool create) override {
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// Nothing to do
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return std::make_tuple(HLE::OS::RESULT_OK);
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}
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HLE::OS::ResultAnd<uint64_t> GetSize(HLE::PXI::FS::FileContext&) override {
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auto begin = boost::iostreams::seek(source, 0, std::ios_base::beg);
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auto end = boost::iostreams::seek(source, 0, std::ios_base::end);
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return std::make_tuple(HLE::OS::RESULT_OK, static_cast<uint64_t>(end - begin));
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}
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HLE::OS::ResultAnd<uint32_t> Read(HLE::PXI::FS::FileContext& context, uint64_t offset, uint32_t num_bytes, HLE::PXI::FS::FileBuffer&& dest) override {
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boost::iostreams::seek(source, offset, std::ios_base::beg);
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std::vector<char> data;
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data.resize(num_bytes);
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boost::iostreams::read(source, data.data(), num_bytes);
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dest.Write(data.data(), num_bytes);
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return std::make_tuple(HLE::OS::RESULT_OK, num_bytes);
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}
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void Close() override {
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}
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};
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std::unique_ptr<HLE::PXI::FS::File> OpenNativeFile(int file_desctiptor) {
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return std::unique_ptr<HLE::PXI::FS::File>(new NativeFile(file_desctiptor));
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}
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} // namespace FileSystem
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