org.apache.commons.imaging.common

Class BinaryFunctions

java.lang.Object

org.apache.commons.imaging.common.BinaryFunctions

public final class BinaryFunctions
extends java.lang.Object

Convenience methods for various binary and I/O operations.

Method Summary

Modifier and Type	Method and Description
static int	charsToQuad(char c1, char c2, char c3, char c4)
static boolean	compareBytes(byte[] a, int aStart, byte[] b, int bStart, int length)
static void	copyStreamToStream(java.io.InputStream is, java.io.OutputStream os)
static int	findNull(byte[] src)
static int	findNull(byte[] src, int start)
static byte[]	getRAFBytes(java.io.RandomAccessFile raf, long pos, int length, java.lang.String exception)
static byte[]	getStreamBytes(java.io.InputStream is)
static byte[]	head(byte[] bytes, int count)
static void	printByteBits(java.lang.String msg, byte i)
static void	printCharQuad(java.io.PrintWriter pw, java.lang.String msg, int i)
static void	printCharQuad(java.lang.String msg, int i)
static int	read2Bytes(java.lang.String name, java.io.InputStream is, java.lang.String exception, java.nio.ByteOrder byteOrder)
static int	read3Bytes(java.lang.String name, java.io.InputStream is, java.lang.String exception, java.nio.ByteOrder byteOrder)
static int	read4Bytes(java.lang.String name, java.io.InputStream is, java.lang.String exception, java.nio.ByteOrder byteOrder)
static void	readAndVerifyBytes(java.io.InputStream is, BinaryConstant expected, java.lang.String exception)
static void	readAndVerifyBytes(java.io.InputStream is, byte[] expected, java.lang.String exception)
static byte	readByte(java.lang.String name, java.io.InputStream is, java.lang.String exception)
static byte[]	readBytes(java.io.InputStream is, int count)
static byte[]	readBytes(java.lang.String name, java.io.InputStream is, int length)
static byte[]	readBytes(java.lang.String name, java.io.InputStream is, int length, java.lang.String exception)
static byte[]	remainingBytes(java.lang.String name, byte[] bytes, int count)
static void	skipBytes(java.io.InputStream is, long length)
static void	skipBytes(java.io.InputStream is, long length, java.lang.String exception)
static byte[]	slice(byte[] bytes, int start, int count)
static boolean	startsWith(byte[] haystack, BinaryConstant needle)
static boolean	startsWith(byte[] haystack, byte[] needle)

Methods inherited from class java.lang.Object

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

Method Detail

startsWith

public static boolean startsWith(byte[] haystack,
                                 byte[] needle)

startsWith

public static boolean startsWith(byte[] haystack,
                                 BinaryConstant needle)

readByte

public static byte readByte(java.lang.String name,
                            java.io.InputStream is,
                            java.lang.String exception)
                     throws java.io.IOException

Throws:

java.io.IOException

readBytes

public static byte[] readBytes(java.lang.String name,
                               java.io.InputStream is,
                               int length)
                        throws java.io.IOException

Throws:

java.io.IOException

readBytes

public static byte[] readBytes(java.lang.String name,
                               java.io.InputStream is,
                               int length,
                               java.lang.String exception)
                        throws java.io.IOException

Throws:

java.io.IOException

readBytes

public static byte[] readBytes(java.io.InputStream is,
                               int count)
                        throws java.io.IOException

Throws:

java.io.IOException

readAndVerifyBytes

public static void readAndVerifyBytes(java.io.InputStream is,
                                      byte[] expected,
                                      java.lang.String exception)
                               throws ImageReadException,
                                      java.io.IOException

Throws:

ImageReadException

java.io.IOException

readAndVerifyBytes

public static void readAndVerifyBytes(java.io.InputStream is,
                                      BinaryConstant expected,
                                      java.lang.String exception)
                               throws ImageReadException,
                                      java.io.IOException

Throws:

ImageReadException

java.io.IOException

skipBytes

public static void skipBytes(java.io.InputStream is,
                             long length,
                             java.lang.String exception)
                      throws java.io.IOException

Throws:

java.io.IOException

remainingBytes

public static byte[] remainingBytes(java.lang.String name,
                                    byte[] bytes,
                                    int count)

slice

public static byte[] slice(byte[] bytes,
                           int start,
                           int count)

head

public static byte[] head(byte[] bytes,
                          int count)

compareBytes

public static boolean compareBytes(byte[] a,
                                   int aStart,
                                   byte[] b,
                                   int bStart,
                                   int length)

read4Bytes

public static int read4Bytes(java.lang.String name,
                             java.io.InputStream is,
                             java.lang.String exception,
                             java.nio.ByteOrder byteOrder)
                      throws java.io.IOException

Throws:

java.io.IOException

read3Bytes

public static int read3Bytes(java.lang.String name,
                             java.io.InputStream is,
                             java.lang.String exception,
                             java.nio.ByteOrder byteOrder)
                      throws java.io.IOException

Throws:

java.io.IOException

read2Bytes

public static int read2Bytes(java.lang.String name,
                             java.io.InputStream is,
                             java.lang.String exception,
                             java.nio.ByteOrder byteOrder)
                      throws java.io.IOException

Throws:

java.io.IOException

printCharQuad

public static void printCharQuad(java.lang.String msg,
                                 int i)

printCharQuad

public static void printCharQuad(java.io.PrintWriter pw,
                                 java.lang.String msg,
                                 int i)

printByteBits

public static void printByteBits(java.lang.String msg,
                                 byte i)

charsToQuad

public static int charsToQuad(char c1,
                              char c2,
                              char c3,
                              char c4)

findNull

public static int findNull(byte[] src)

findNull

public static int findNull(byte[] src,
                           int start)

getRAFBytes

public static byte[] getRAFBytes(java.io.RandomAccessFile raf,
                                 long pos,
                                 int length,
                                 java.lang.String exception)
                          throws java.io.IOException

Throws:

java.io.IOException

skipBytes

public static void skipBytes(java.io.InputStream is,
                             long length)
                      throws java.io.IOException

Throws:

java.io.IOException

copyStreamToStream

public static void copyStreamToStream(java.io.InputStream is,
                                      java.io.OutputStream os)
                               throws java.io.IOException

Throws:

java.io.IOException

getStreamBytes

public static byte[] getStreamBytes(java.io.InputStream is)
                             throws java.io.IOException

Throws:

java.io.IOException