UtfUtil (JCMS API)

java.lang.Object
- com.jalios.io.mimetype.UtfUtil

```
public class UtfUtil
extends java.lang.Object
```
Utility methods and classes for handling UTF (Unicode Transformation Format) streams. Licence concern : This method is based upon Aperture MagicMimeTypeIdentifier. The code was modified at the margin to be compatible with JRE 1.4.2. Given the licence of Aperture : Open Software Licence (OSL), this modified code of Aperture classes are held at the disposal on demand at support@jalios.com Concerned classes : UtfUtil MagicNumber MagicMimeTypeIdentifier MagicString MagicNumber

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`MAX_BOM_LENGTH`
`static byte[]`	`UTF16BE_BOM`
`static byte[]`	`UTF16LE_BOM`
`static byte[]`	`UTF32BE_BOM`
`static byte[]`	`UTF32LE_BOM`
`static byte[]`	`UTF8_BOM`

Constructor Summary

Constructors
Constructor Description

UtfUtil()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static byte[]`	`findMatchingBOM(byte[] bytes)`	Determines whether the specified byte array starts with a UTF Byte Order Mark and, if so, returns the matching BOM constant.
`static java.lang.String`	`getCharsetName(byte[] byteOrderMark)`	Returns the canonical charset name consistent with the specified Byte Order Mark.

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

- Field Detail
  - UTF8_BOM
```
public static final byte[] UTF8_BOM
```
  - UTF16BE_BOM
```
public static final byte[] UTF16BE_BOM
```
  - UTF16LE_BOM
```
public static final byte[] UTF16LE_BOM
```
  - UTF32BE_BOM
```
public static final byte[] UTF32BE_BOM
```
  - UTF32LE_BOM
```
public static final byte[] UTF32LE_BOM
```
  - MAX_BOM_LENGTH
```
public static final int MAX_BOM_LENGTH
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - UtfUtil
```
public UtfUtil()
```
- Method Detail
  - findMatchingBOM
```
public static byte[] findMatchingBOM(byte[] bytes)
```
    Determines whether the specified byte array starts with a UTF Byte Order Mark and, if so, returns the matching BOM constant.
    
    Parameters:
    
    bytes - The byte array that is tested for the presence of a UTF Byte Order Mark.
    
    Returns:
    
    The Byte Order Mark found at the start of the array (one of the constants in this class) or 'null' when a Byte Order Mark could not be found.
  - getCharsetName
```
public static java.lang.String getCharsetName(byte[] byteOrderMark)
```
    Returns the canonical charset name consistent with the specified Byte Order Mark.
    
    Parameters:
    
    byteOrderMark - A Unicode Byte Order Mark.
    
    Returns:
    
    A canonical charset name, or null when the Byte Order Mark was not recognized.