org.crsh.util

Class Utils

java.lang.Object

org.crsh.util.Utils

public class Utils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
private static Iterator	EMPTY_ITERATOR .
private static Pattern	FOO

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Methods

Modifier and Type	Method and Description
static <E> E	first(Iterable<E> elements)
static String	globexToRegex(String globex) Create a pattern that transforms a glob expression into a regular expression, the following task are supported * : Match any number of unknown characters ? : Match one unknown character [characters] : Match a character as part of a group of characters \ : Escape character
static int	indexOf(CharSequence s, int off, char c)
static <E> Iterator<E>	iterator()
static <E> Iterator<E>	iterator(E element)
static <E> List<E>	list(E... elements)
static <E> List<E>	list(Iterable<E> iterable)
static <E> List<E>	list(Iterator<E> iterator)
static <K,V> HashMap<K,V>	map(K key, V value)
static <K,V,M extends Map<K,V>> M	map(M map, K key, V value)
static <E> ArrayList<E>	newArrayList()
static <K,V> HashMap<K,V>	newHashMap()
static <E> HashSet<E>	newHashSet()
static <E> LinkedList<E>	newLinkedList()
static <E> E	notNull(E e1, E e2)
static String	trimLeft(String s)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_ITERATOR

private static final Iterator EMPTY_ITERATOR

.

FOO

private static final Pattern FOO

Constructor Detail

Utils

public Utils()

Method Detail

iterator

public static <E> Iterator<E> iterator()

iterator

public static <E> Iterator<E> iterator(E element)

newArrayList

public static <E> ArrayList<E> newArrayList()

newLinkedList

public static <E> LinkedList<E> newLinkedList()

newHashSet

public static <E> HashSet<E> newHashSet()

newHashMap

public static <K,V> HashMap<K,V> newHashMap()

first

public static <E> E first(Iterable<E> elements)

map

public static <K,V,M extends Map<K,V>> M map(M map,
                             K key,
                             V value)

map

public static <K,V> HashMap<K,V> map(K key,
                     V value)

list

public static <E> List<E> list(E... elements)

list

public static <E> List<E> list(Iterable<E> iterable)

list

public static <E> List<E> list(Iterator<E> iterator)

indexOf

public static int indexOf(CharSequence s,
          int off,
          char c)

trimLeft

public static String trimLeft(String s)

notNull

public static <E> E notNull(E e1,
            E e2)

globexToRegex

public static String globexToRegex(String globex)
                            throws NullPointerException

Create a pattern that transforms a glob expression into a regular expression, the following task are supported

• * : Match any number of unknown characters
• ? : Match one unknown character
• [characters] : Match a character as part of a group of characters
• \ : Escape character

Parameters:

globex - the glob expression

Returns:

the regular expression

Throws:

NullPointerException - when the globex argument is null