org.apache.pdfbox.util

Class Hex

java.lang.Object

org.apache.pdfbox.util.Hex

public final class Hex
extends Object

Utility functions for hex encoding.

Author:

John Hewson

Method Summary

Modifier and Type	Method and Description
static byte[]	getBytes(byte b) Returns the bytes corresponding to the ASCII hex encoding of the given byte.
static byte[]	getBytes(byte[] bytes) Returns the bytes corresponding to the ASCII hex encoding of the given bytes.
static char[]	getChars(short num) Returns the characters corresponding to the ASCII hex encoding of the given short.
static char[]	getCharsUTF16BE(String text) Takes the characters in the given string, convert it to bytes in UTF16-BE format and build a char array that corresponds to the ASCII hex encoding of the resulting bytes.
static String	getString(byte b) Returns a hex string of the given byte.
static String	getString(byte[] bytes) Returns a hex string of the given byte array.
static void	writeHexByte(byte b, OutputStream output) Writes the given byte as hex value to the given output stream.
static void	writeHexBytes(byte[] bytes, OutputStream output) Writes the given byte array as hex value to the given output stream.

Methods inherited from class java.lang.Object

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

Method Detail

getString

public static String getString(byte b)

Returns a hex string of the given byte.

getString

public static String getString(byte[] bytes)

Returns a hex string of the given byte array.

getBytes

public static byte[] getBytes(byte b)

Returns the bytes corresponding to the ASCII hex encoding of the given byte.

getBytes

public static byte[] getBytes(byte[] bytes)

Returns the bytes corresponding to the ASCII hex encoding of the given bytes.

getChars

public static char[] getChars(short num)

Returns the characters corresponding to the ASCII hex encoding of the given short.

getCharsUTF16BE

public static char[] getCharsUTF16BE(String text)

Takes the characters in the given string, convert it to bytes in UTF16-BE format and build a char array that corresponds to the ASCII hex encoding of the resulting bytes. Example:

   getCharsUTF16BE("ab") == new char[]{'0','0','6','1','0','0','6','2'}
 

Parameters:

text - The string to convert

Returns:

The string converted to hex

writeHexByte

public static void writeHexByte(byte b,
                                OutputStream output)
                         throws IOException

Writes the given byte as hex value to the given output stream.

Parameters:

b - the byte to be written

output - the output stream to be written to

Throws:

IOException - exception if anything went wrong

writeHexBytes

public static void writeHexBytes(byte[] bytes,
                                 OutputStream output)
                          throws IOException

Writes the given byte array as hex value to the given output stream.

Parameters:

bytes - the byte array to be written

output - the output stream to be written to

Throws:

IOException - exception if anything went wrong