Package io.github.lukehutch.fastclasspathscanner.utils

Class InputStreamOrByteBufferAdapter

java.lang.Object

io.github.lukehutch.fastclasspathscanner.utils.InputStreamOrByteBufferAdapter

public abstract class InputStreamOrByteBufferAdapter
extends Object

Buffer class that can wrap either an InputStream or a ByteBuffer, depending on which is available.

Field Summary

Fields

Modifier and Type	Field	Description
byte[]	buf	Bytes read from the beginning of the classfile.
int	curr	The current position in the buffer.
int	used	Bytes used in the buffer.

Constructor Summary

Constructors

Constructor	Description
InputStreamOrByteBufferAdapter()

Method Summary

Modifier and Type	Method	Description
static InputStreamOrByteBufferAdapter	create(InputStream inputStream)	Create a new InputStream adapter.
static InputStreamOrByteBufferAdapter	create(ByteBuffer byteBuffer)	Create a new ByteBuffer adapter.
abstract int	read(byte[] array, int off, int len)
void	readInitialChunk()
int	readInt()	Read an int from the buffer.
int	readInt(int offset)	Read an int from the buffer at a specific offset before the current read point.
long	readLong()	Read a long from the buffer.
long	readLong(int offset)	Read a long from the buffer at a specific offset before the current read point.
String	readString(int strStart, boolean replaceSlashWithDot, boolean stripLSemicolon)	Reads the "modified UTF8" format defined in the Java classfile spec, optionally replacing '/' with '.', and optionally removing the prefix "L" and the suffix ";".
int	readUnsignedByte()	Read an unsigned byte from the buffer.
int	readUnsignedByte(int offset)	Read an unsigned byte from the buffer at a specific offset before the current read point.
int	readUnsignedShort()	Read an unsigned short from the buffer.
int	readUnsignedShort(int offset)	Read an unsigned short from the buffer at a specific offset before the current read point.
void	skip(int bytesToSkip)	Skip the given number of bytes in the input stream.

Methods inherited from class java.lang.Object

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

Field Detail

buf

public byte[] buf

Bytes read from the beginning of the classfile. This array is reused across calls.

curr

public int curr

The current position in the buffer.

used

public int used

Bytes used in the buffer.

Constructor Detail

InputStreamOrByteBufferAdapter

public InputStreamOrByteBufferAdapter()

Method Detail

readInitialChunk

public void readInitialChunk()
                      throws IOException

Throws:

IOException

readUnsignedByte

public int readUnsignedByte()
                     throws IOException,
                            InterruptedException

Read an unsigned byte from the buffer.

Throws:

IOException

InterruptedException

readUnsignedByte

public int readUnsignedByte(int offset)

Read an unsigned byte from the buffer at a specific offset before the current read point.

readUnsignedShort

public int readUnsignedShort()
                      throws IOException,
                             InterruptedException

Read an unsigned short from the buffer.

Throws:

IOException

InterruptedException

readUnsignedShort

public int readUnsignedShort(int offset)

Read an unsigned short from the buffer at a specific offset before the current read point.

readInt

public int readInt()
            throws IOException,
                   InterruptedException

Read an int from the buffer.

Throws:

IOException

InterruptedException

readInt

public int readInt(int offset)
            throws IOException

Read an int from the buffer at a specific offset before the current read point.

Throws:

IOException

readLong

public long readLong()
              throws IOException,
                     InterruptedException

Read a long from the buffer.

Throws:

IOException

InterruptedException

readLong

public long readLong(int offset)
              throws IOException

Read a long from the buffer at a specific offset before the current read point.

Throws:

IOException

skip

public void skip(int bytesToSkip)
          throws IOException,
                 InterruptedException

Skip the given number of bytes in the input stream.

Throws:

IOException

InterruptedException

readString

public String readString(int strStart,
                         boolean replaceSlashWithDot,
                         boolean stripLSemicolon)

Reads the "modified UTF8" format defined in the Java classfile spec, optionally replacing '/' with '.', and optionally removing the prefix "L" and the suffix ";".

read

public abstract int read(byte[] array,
                         int off,
                         int len)
                  throws IOException

Throws:

IOException

create

public static InputStreamOrByteBufferAdapter create(InputStream inputStream)
                                             throws IOException

Create a new InputStream adapter.

Throws:

IOException

create

public static InputStreamOrByteBufferAdapter create(ByteBuffer byteBuffer)
                                             throws IOException

Create a new ByteBuffer adapter.

Throws:

IOException