StreamUtils.java

package SevenZip.Common;

import java.io.IOException;
import java.io.InputStream;

public class StreamUtils {
	
    static public int ReadStream(InputStream stream, byte[] data, int off, int size) throws IOException {
        int processedSize = 0;

        while(size != 0) {
             int processedSizeLoc = stream.read(data,off + processedSize,size);
             if (processedSizeLoc > 0)
             {
                processedSize += processedSizeLoc;
                size -= processedSizeLoc;
             }
             if (processedSizeLoc == -1) {
                 if (processedSize > 0) return processedSize;
                 return -1; // EOF
             }
        }
        return processedSize;
    }
    
    // HRESULT WriteStream(ISequentialOutStream *stream, const void *data, UInt32 size, UInt32 *processedSize);
}