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#pragma once
#include "Object.h"
#include "Bitmask.h"
// A basic stream class.
class Stream : NoCopy {
public:
enum Mode { mNone = 0x0, mRead = 0x1, mWrite = 0x2, mRandom = 0x3 };
Stream();
virtual ~Stream();
// Clone this stream.
virtual Stream *clone() const = 0;
// Non-implemented reads and write simply assert.
virtual nat read(nat size, void *to);
virtual void write(nat size, const void *from);
virtual nat64 pos() const = 0;
virtual nat64 length() const = 0;
virtual void seek(nat64 to) = 0;
virtual bool more() const;
virtual bool valid() const = 0;
// See if any error has occurred.
virtual bool error() const;
// Clear the error flag.
virtual void clearError();
// Write an entire stream.
void write(Stream *from);
protected:
// Error during stream operation.
bool hasError;
private:
// Chunk size when copying streams.
enum { copySize = 1 * 1024 };
};
BITMASK_OPERATORS(Stream::Mode);
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