com.guardtime.ksi.tlv

Class TLVInputStream

java.lang.Object

java.io.InputStream

com.guardtime.ksi.tlv.TLVInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class TLVInputStream
extends InputStream

Specialized input stream for decoding TLV data.

Field Summary

Fields

Modifier and Type	Field and Description
static int	TLV16_HEADER_LENGTH
static int	TLV8_HEADER_LENGTH

Constructor Summary

Constructors

Constructor and Description
TLVInputStream(InputStream stream) Creates a TLVInputStream that uses the specified underlying InputStream.

Method Summary

Modifier and Type	Method and Description
void	close() Closes this input stream and releases any system resources associated with the stream.
boolean	hasNextElement() Checks if stream contains bytes to read.
int	read() Reads the next byte of data from this input stream.
TLVElement	readElement() Reads the next TLV element from the stream.

Methods inherited from class java.io.InputStream

available, mark, markSupported, read, read, reset, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TLV16_HEADER_LENGTH

public static final int TLV16_HEADER_LENGTH

See Also:

Constant Field Values

TLV8_HEADER_LENGTH

public static final int TLV8_HEADER_LENGTH

See Also:

Constant Field Values

Constructor Detail

TLVInputStream

public TLVInputStream(InputStream stream)
               throws TLVParserException

Creates a TLVInputStream that uses the specified underlying InputStream. The input will be wrapped by DataInputStream.

Parameters:

stream - the specified input stream to use, not null.

Throws:

TLVParserException - when input stream is null.

Method Detail

readElement

public TLVElement readElement()
                       throws IOException,
                              TLVParserException

Reads the next TLV element from the stream.

Returns:

Instance of TLVElement.

Throws:

IOException - when reading from underlying stream fails.

TLVParserException - when input stream is null.

hasNextElement

public boolean hasNextElement()
                       throws IOException

Checks if stream contains bytes to read.

Returns:

True, if stream contains at least one byte that can be read.

Throws:

IOException - when reading from underlying stream fails.

read

public int read()
         throws IOException

Reads the next byte of data from this input stream.

Specified by:

read in class InputStream

Returns:

The total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

Throws:

IOException - when reading from underlying stream fails.

close

public void close()
           throws IOException

Closes this input stream and releases any system resources associated with the stream.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

Throws:

IOException - if an I/O error occurs.