org.jaxen.function
Class NormalizeSpaceFunction

java.lang.Object
  org.jaxen.function.NormalizeSpaceFunction

All Implemented Interfaces:

Function

public class NormalizeSpaceFunction
extends java.lang.Object
implements Function

4.2 string normalize-space(string)

The normalize-space function returns the argument string with whitespace normalized by stripping leading and trailing whitespace and replacing sequences of whitespace characters by a single space. Whitespace characters are the same as those allowed by the S production in XML. If the argument is omitted, it defaults to the context node converted to a string, in other words the string-value of the context node.

Author:

James Strachan (james@metastuff.com)

See Also:

Section 4.2 of the XPath Specification

Constructor Summary

NormalizeSpaceFunction()
Create a new NormalizeSpaceFunction object.

Method Summary

java.lang.Object	call(Context context, java.util.List args) Returns the string-value of the first item in args after removing all leading and trailing white space, and replacing each other sequence of whitespace by a single space.
static java.lang.String	evaluate(java.lang.Object strArg, Navigator nav) Returns the string-value of strArg after removing all leading and trailing white space, and replacing each other sequence of whitespace by a single space.
private static boolean	isXMLSpace(char c)

Methods inherited from class java.lang.Object

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

Constructor Detail

NormalizeSpaceFunction

public NormalizeSpaceFunction()

Create a new NormalizeSpaceFunction object.

Method Detail

call

public java.lang.Object call(Context context,
                             java.util.List args)
                      throws FunctionCallException

Returns the string-value of the first item in args after removing all leading and trailing white space, and replacing each other sequence of whitespace by a single space. Whitespace consists of the characters space (0x32), carriage return (0x0D), linefeed (0x0A), and tab (0x09).

Specified by:

call in interface Function

Parameters:

context - the context at the point in the expression when the function is called

args - a list that contains exactly one item

Returns:

a normalized String

Throws:

FunctionCallException - if args does not have length one

evaluate

public static java.lang.String evaluate(java.lang.Object strArg,
                                        Navigator nav)

Returns the string-value of strArg after removing all leading and trailing white space, and replacing each other sequence of whitespace by a single space. Whitespace consists of the characters space (0x32), carriage return (0x0D), linefeed (0x0A), and tab (0x09).

Parameters:

strArg - the object whose string-value is normalized

nav - the context at the point in the expression when the function is called

Returns:

the normalized string-value

isXMLSpace

private static boolean isXMLSpace(char c)