32 lines
873 B
C++
32 lines
873 B
C++
#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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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() = 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. returns (UInt32)-1 if there's
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// no data for timeout seconds; if timeout < 0 then it blocks
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// until data is available.
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// (cancellation point)
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virtual UInt32 read(void* buffer, UInt32 maxCount, double timeout) = 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 = 0;
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};
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#endif
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