ByteOps (The Adobe Experience Manager SDK 2020.8.4081.20200820T070745Z-200730)

java.lang.Object
- com.adobe.internal.pdftoolkit.core.util.ByteOps

```
public final class ByteOps
extends Object
```
This class provides many utility methods over bytes.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static int`	`copy(byte[] src, int srcOff, byte[] dst, int dstOff, int len)` Copies source to destion array.
`static int`	`endsWithPartial(byte[] src, int srcOff, byte[] suffix, int sufOff)` Returns the index at which this suffix exists in the src array.
`static int`	`equalArrays(byte[] src, int srcOff, byte[] dst, int dstOff, int len)` Checks the equality of two byte arrays.
`static byte`	`getHex(byte b)` Converts the specified hexidecimal character to a byte value.
`static byte[]`	`getHex(byte[] src)` Returns hex representation of src.
`static byte[]`	`getHex(byte[] src, int size)` Hex encodes the data in src to a new byte array that is of length size.
`static ASName`	`getHexName(byte[] in)` Converts the contents of a byte[] to a hex name (lowercase).
`static ASName`	`getHexName(byte[] in, boolean uppercase)` Converts the contents of a byte[] to a hex name.
`static String`	`getHexString(byte[] in)` Converts the contents of a byte[] to a hex string.
`static String`	`getHexString(byte[] in, int size)` Converts the contents of a byte[] to a hex string.
`static String`	`getHexString2(byte[] in)` Converts the contents of a byte[] to a hex string.
`static byte`	`getNumericalValue(byte b)` Returns the numerical value for a byte that is used to represent a character.
`static String`	`getUnicode(byte[] unicodeBytes)` In presumption that the input byte array contains Unicode characters converts them to Java String.
`static boolean`	`isASCII(byte[] bytes)`
`static boolean`	`isDigit(byte b)` Determines whether the specified byte represents a decimal digit.
`static boolean`	`isHexDigit(byte b)` Determines whether the specified byte represents a hex digit.
`static boolean`	`isLeadingOctalDigit(byte b)` Determines whether the specified byte represents a leading octal digit.
`static boolean`	`isLiteral(byte b)` Determines whether the specified byte represents a literal PDF character.
`static boolean`	`isOctalDigit(byte b)` Determines whether the specified byte represents an octal digit.
`static boolean`	`isRegular(byte b)` Determines whether the specified byte represents a regular PDF character.
`static boolean`	`isWhitespace(byte b)` Determines whether the specified byte represents a PDF whitespace character.
`static boolean`	`isWhitespace(char c)` Determines whether the specified character represents a PDF whitespace character.
`static int`	`readField(byte[] s, int pos)` Reads two characters that are assumed to be digits and combines them into a decimal value.
`static byte[]`	`splitInt2Bytes(int src, int count)` Converts the integer passed here to byte array.
`static byte[]`	`toByte(short word0)`
`static byte[]`	`xorArray(byte[] array, byte with)` Computes the XOR of the individual bytes of arrays passed here and returns it.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - isWhitespace
```
public static final boolean isWhitespace(byte b)
```
    Determines whether the specified byte represents a PDF whitespace character. Whitespace characters are defined in section 3.1.1 of the PDF Reference Manual version 1.4.
    
    Parameters:
    
    b - Character to test
    
    Returns:
    
    true if the character is whitespace.
  - isWhitespace
```
public static final boolean isWhitespace(char c)
```
    Determines whether the specified character represents a PDF whitespace character. Whitespace characters are defined in section 3.1.1 of the PDF Reference Manual version 1.4.
    
    Parameters:
    
    c - Character to test
    
    Returns:
    
    true if the character is whitespace.
  - isASCII
```
public static boolean isASCII(byte[] bytes)
```
  - xorArray
```
public static final byte[] xorArray(byte[] array,
                                    byte with)
```
    Computes the XOR of the individual bytes of arrays passed here and returns it.
  - endsWithPartial
```
public static int endsWithPartial(byte[] src,
                                  int srcOff,
                                  byte[] suffix,
                                  int sufOff)
```
    Returns the index at which this suffix exists in the src array.
  - equalArrays
```
public static final int equalArrays(byte[] src,
                                    int srcOff,
                                    byte[] dst,
                                    int dstOff,
                                    int len)
```
    Checks the equality of two byte arrays.
  - copy
```
public static final int copy(byte[] src,
                             int srcOff,
                             byte[] dst,
                             int dstOff,
                             int len)
```
    Copies source to destion array.
  - splitInt2Bytes
```
public static final byte[] splitInt2Bytes(int src,
                                          int count)
```
    Converts the integer passed here to byte array.
  - isRegular
```
public static final boolean isRegular(byte b)
```
    Determines whether the specified byte represents a regular PDF character. Regular characters are defined in section 3.1.1 of the PDF Reference Manual version 1.4.
    
    Parameters:
    
    b - Character to test
    
    Returns:
    
    true if the character is regular.
  - isLiteral
```
public static final boolean isLiteral(byte b)
```
    Determines whether the specified byte represents a literal PDF character. String literal characters are defined in section 3.2.3 of the PDF Reference Manual version 1.4.
    
    Parameters:
    
    b - Character to test
    
    Returns:
    
    true if the character is a literal.
  - isDigit
```
public static final boolean isDigit(byte b)
```
    Determines whether the specified byte represents a decimal digit.
    
    Parameters:
    
    b - Character to test
    
    Returns:
    
    true if the character represents a decimal digit.
  - isHexDigit
```
public static final boolean isHexDigit(byte b)
```
    Determines whether the specified byte represents a hex digit.
    
    Parameters:
    
    b - Character to test
    
    Returns:
    
    true if the character represents a hex digit.
  - isOctalDigit
```
public static final boolean isOctalDigit(byte b)
```
    Determines whether the specified byte represents an octal digit.
    
    Parameters:
    
    b - Character to test
    
    Returns:
    
    true if the character represents an octal digit.
  - isLeadingOctalDigit
```
public static final boolean isLeadingOctalDigit(byte b)
```
    Determines whether the specified byte represents a leading octal digit. A leading octal digit is one that leads a 3 digit octal sequence that will fit within a single byte. That means that the octal digit must be between 0 and 3 inclusive.
    
    Parameters:
    
    b - Character to test
    
    Returns:
    
    true if the character represents an octal digit.
  - getNumericalValue
```
public static final byte getNumericalValue(byte b)
```
    Returns the numerical value for a byte that is used to represent a character. So, if a byte contains the value 0x30 (or the "character" '0') that would return a value of 0. This will work for decimal, octal, and hexadecimal values.
    
    Parameters:
    
    b - Character to test
    
    Returns:
    
    true if the character represents an octal digit.
  - readField
```
public static int readField(byte[] s,
                            int pos)
                     throws PDFParseException
```
    Reads two characters that are assumed to be digits and combines them into a decimal value.
    
    Parameters:
    
    s - Byte array containing two characters to convert to a a numeric value
    
    pos - Position in the array where the characters start
    
    Returns:
    
    Value of the two characters combined and treated as decimal digits (e.g. "12" is returned as the value 12).
    
    Throws:
    
    PDFParseException - If two characters could not be read from the byte array or the characters did not correspond to decimal digits.
  - getHex
```
public static byte[] getHex(byte[] src)
```
    Returns hex representation of src.
  - getHex
```
public static byte[] getHex(byte[] src,
                            int size)
```
    Hex encodes the data in src to a new byte array that is of length size. If the hex encoded data is less than size, then the buffer is padded with zeroes. The size parameter must be equal to or greater than 2 * src.length or an ArrayIndexOutOfBoundsException will occur. The size parameter should also be even since hex encoded data always has an even length.
  - getHexString
```
public static String getHexString(byte[] in)
```
    Converts the contents of a byte[] to a hex string.
  - getHexName
```
public static ASName getHexName(byte[] in)
                         throws UnsupportedEncodingException
```
    Converts the contents of a byte[] to a hex name (lowercase).
    
    Parameters:
    
    in -
    
    Returns:
    
    ASName
    
    Throws:
    
    UnsupportedEncodingException
  - getHexName
```
public static ASName getHexName(byte[] in,
                                boolean uppercase)
```
    Converts the contents of a byte[] to a hex name.
    
    Parameters:
    
    in - the bytes used to make the hex name
    
    uppercase - true if the hex should utilize upper-case alpha characters; false if the alpha characters should be lower-case
    
    Returns:
    
    ASName
  - getHexString
```
public static String getHexString(byte[] in,
                                  int size)
                           throws UnsupportedEncodingException
```
    Converts the contents of a byte[] to a hex string. The size parameter must be equal to or greater than 2 * src.length or an ArrayIndexOutOfBoundsException will occur. The size parameter should also be even since hex encoded data always has an even length.
    
    Throws:
    
    UnsupportedEncodingException
  - getHexString2
```
public static String getHexString2(byte[] in)
```
    Converts the contents of a byte[] to a hex string.
  - getHex
```
public static byte getHex(byte b)
                   throws PDFParseException
```
    Converts the specified hexidecimal character to a byte value. For example, the hex character 'A' is converted to the value 10.
    
    Parameters:
    
    b - Hex character to convert
    
    Returns:
    
    Byte value corresponding to the specified hex character.
    
    Throws:
    
    PDFParseException
  - getUnicode
```
public static String getUnicode(byte[] unicodeBytes)
```
    In presumption that the input byte array contains Unicode characters converts them to Java String. If the input byte array is null, empty or contains non-Unicode characters returns null.
    
    Parameters:
    
    unicodeBytes -
    
    Returns:
    
    String representation of the Unicode characters in a byte array
  - toByte
```
public static final byte[] toByte(short word0)
```

Class ByteOps

Method Summary

Methods inherited from class java.lang.Object

Method Detail

isWhitespace

isWhitespace

isASCII

xorArray

endsWithPartial

equalArrays

copy

splitInt2Bytes

isRegular

isLiteral

isDigit

isHexDigit

isOctalDigit

isLeadingOctalDigit

getNumericalValue

readField

getHex

getHex

getHexString

getHexName

getHexName

getHexString

getHexString2

getHex

getUnicode

toByte