30 lines
757 B
C
30 lines
757 B
C
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#ifndef IINPUTSTREAM_H
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#define IINPUTSTREAM_H
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#include "IInterface.h"
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#include "BasicTypes.h"
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#include "XIO.h"
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class IInputStream : public IInterface {
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public:
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// manipulators
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// close the stream
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virtual void close() throw(XIO) = 0;
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// read up to maxCount bytes into buffer, return number read.
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// blocks if no data is currently available. if buffer is NULL
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// then the data is discarded.
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virtual UInt32 read(void* buffer, UInt32 maxCount) throw(XIO) = 0;
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// accessors
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// get a conservative estimate of the available bytes to read
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// (i.e. a number not greater than the actual number of bytes).
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// some streams may not be able to determine this and will always
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// return zero.
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virtual UInt32 getSize() const throw() = 0;
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};
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#endif
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