org.codehaus.plexus.interpolation.util

Class ValueSourceUtils

java.lang.Object

org.codehaus.plexus.interpolation.util.ValueSourceUtils

public final class ValueSourceUtils
extends java.lang.Object

Utility methods shared by multiple ValueSource implementations.

Version:

$Id$

Author:

jdcasey

Method Summary

Methods

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

Methods inherited from class java.lang.Object

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

Method Detail

trimPrefix

public static java.lang.String trimPrefix(java.lang.String expression,
                          java.util.Collection<java.lang.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 java.lang.String trimPrefix(java.lang.String expression,
                          java.lang.String[] possiblePrefixes,
                          boolean allowUnprefixedExpressions)