driver-legacy/src/main/com/mongodb/gridfs/GridFSInputFile.java
private int _readStream2Buffer() throws IOException {
        int bytesRead = 0;
        while (currentBufferPosition < chunkSize && bytesRead >= 0) {
            bytesRead = inputStream.read(buffer, currentBufferPosition, (int) chunkSize - currentBufferPosition);
            if (bytesRead > 0) {
                currentBufferPosition += bytesRead;
            } else if (bytesRead == 0) {
                throw new RuntimeException("i'm doing something wrong");
            }
        }
        return bytesRead;
    }
private int _readStream2Buffer() throws IOException {
        int bytesRead = 0;
        while (currentBufferPosition < chunkSize && bytesRead >= 0) {
            bytesRead = inputStream.read(buffer, currentBufferPosition, (int) chunkSize - currentBufferPosition);
            if (bytesRead > 0) {
                currentBufferPosition += bytesRead;
            } else if (bytesRead == 0) {
                throw new RuntimeException("i'm doing something wrong");
            }
        }
        return bytesRead;
    }
private int _readStream2Buffer ( ) throws IOException { int bytesRead = 0 ; while ( currentBufferPosition < chunkSize && bytesRead >= 0 ) { bytesRead = inputStream . read ( buffer , currentBufferPosition , ( int ) chunkSize - currentBufferPosition ) ; if ( bytesRead > 0 ) { currentBufferPosition += bytesRead ; } else if ( bytesRead == 0 ) { throw new RuntimeException ( "i'm doing something wrong" ) ; } } return bytesRead ; }
Reads a buffer full from the {@link java.io.InputStream}.

@return Number of bytes read from stream.
@throws IOException if the reading from the stream fails.
Reads a buffer full from the { @link java . io . InputStream } .