mirror of https://github.com/AxioDL/nod.git
80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
#ifndef __NOD_IDISC_IO__
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#define __NOD_IDISC_IO__
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#include <memory>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#if NOD_ATHENA
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#include <athena/IStreamReader.hpp>
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#include <athena/IStreamWriter.hpp>
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#endif
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namespace nod
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{
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class IDiscIO
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{
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public:
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virtual ~IDiscIO() {}
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struct IReadStream
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{
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virtual ~IReadStream() {}
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virtual uint64_t read(void* buf, uint64_t length)=0;
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virtual void seek(int64_t offset, int whence=SEEK_SET)=0;
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virtual uint64_t position() const=0;
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};
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virtual std::unique_ptr<IReadStream> beginReadStream(uint64_t offset=0) const=0;
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struct IWriteStream
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{
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virtual ~IWriteStream() {}
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virtual uint64_t write(const void* buf, uint64_t length)=0;
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};
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virtual std::unique_ptr<IWriteStream> beginWriteStream(uint64_t offset=0) const=0;
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};
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struct IPartReadStream
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{
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virtual ~IPartReadStream() {}
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virtual void seek(int64_t offset, int whence=SEEK_SET)=0;
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virtual uint64_t position() const=0;
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virtual uint64_t read(void* buf, uint64_t length)=0;
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};
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struct IPartWriteStream
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{
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virtual ~IPartWriteStream() {}
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virtual void close()=0;
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virtual uint64_t position() const=0;
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virtual uint64_t write(const void* buf, uint64_t length)=0;
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};
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#if NOD_ATHENA
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class AthenaPartReadStream : public athena::io::IStreamReader
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{
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std::unique_ptr<IPartReadStream> m_rs;
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public:
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AthenaPartReadStream(std::unique_ptr<IPartReadStream>&& rs) : m_rs(std::move(rs)) {}
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inline void seek(atInt64 off, athena::SeekOrigin origin)
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{
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if (origin == athena::Begin)
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m_rs->seek(off, SEEK_SET);
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else if (origin == athena::Current)
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m_rs->seek(off, SEEK_CUR);
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}
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inline atUint64 position() const {return m_rs->position();}
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inline atUint64 length() const {return 0;}
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inline atUint64 readUBytesToBuf(void* buf, atUint64 sz) {m_rs->read(buf, sz); return sz;}
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};
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#endif
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}
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#endif // __NOD_IDISC_IO__
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