Package org.codehaus.plexus.interpolation.util

Class ValueSourceUtils

java.lang.Object

org.codehaus.plexus.interpolation.util.ValueSourceUtils

public final class ValueSourceUtils
extends Object

Utility methods shared by multiple ValueSource implementations.

Author:

jdcasey

Method Summary

Modifier and Type	Method	Description
static String	trimPrefix(String expression, String[] possiblePrefixes, boolean allowUnprefixedExpressions)
static String	trimPrefix(String expression, Collection<String> possiblePrefixes, boolean allowUnprefixedExpressions)	If the expression starts with one of the provided prefixes, trim that prefix and return the remaining expression.

Methods inherited from class java.lang.Object

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

Method Details

trimPrefix

public static String trimPrefix(String expression,
 Collection<String> possiblePrefixes,
 boolean allowUnprefixedExpressions)

If the expression starts with one of the provided prefixes, trim that prefix and return the remaining expression. If it doesn't start with a provided prefix, and the allowUnprefixedExpressions flag is true, then return the expression unchanged; if the flag is false, return null. Finally, if the original expression is null, return null without attempting to process it.

Parameters:

expression - The expression to trim

possiblePrefixes - The list of possible expression prefixes to trim

allowUnprefixedExpressions - Whether to return the expression if it doesn't start with one of the prefixes. If true, simply return the original expression; if false, return null.

Returns:

The trimmed expression, or null. See the behavior of allowUnprefixedExpressions in this method for more detail.

trimPrefix

public static String trimPrefix(String expression,
 String[] possiblePrefixes,
 boolean allowUnprefixedExpressions)