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PipedInputStream和PipedOutputStream管道传输数据
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import java.io.IOException; | |
import java.io.InputStream; | |
import java.io.OutputStream; | |
import java.io.PipedInputStream; | |
import java.io.PipedOutputStream; | |
import java.util.concurrent.atomic.AtomicBoolean; | |
/** | |
* @author assistne | |
* @since 2018/5/11 | |
*/ | |
public class Pipe { | |
private InputStream mInputStream; | |
private OutputStream mOutputStream; | |
private AtomicBoolean mIsOutClosed = new AtomicBoolean(); | |
public Pipe(int size) { | |
mInputStream = new PipedInputStream(size); | |
try { | |
mOutputStream = new PipedOutputStream((PipedInputStream) mInputStream); | |
} catch (IOException e) { | |
// 不可能 | |
/* no-op */ | |
} | |
mIsOutClosed.set(false); | |
} | |
public boolean shouldReadInTo(byte[] temp) { | |
return canFullFill(temp) || mIsOutClosed.get(); | |
} | |
public boolean canFullFill(byte[] container) { | |
try { | |
return mInputStream.available() >= container.length; | |
} catch (IOException e) { | |
return false; | |
} | |
} | |
public void write(byte[] data) throws IOException { | |
mOutputStream.write(data); | |
} | |
public int read(byte[] out) throws IOException { | |
return mInputStream.read(out); | |
} | |
public void close() { | |
closeOut(); | |
closeIn(); | |
} | |
public void closeIn() { | |
try { | |
mInputStream.close(); | |
} catch (IOException e) { | |
/* no-op */ | |
} | |
} | |
public void closeOut() { | |
try { | |
mOutputStream.close(); | |
} catch (IOException e) { | |
/* no-op */ | |
} | |
mIsOutClosed.set(true); | |
} | |
} |
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