org.jaxen.function

Class NormalizeSpaceFunction

public class NormalizeSpaceFunction extends 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
Objectcall(Context context, 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 Stringevaluate(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.
static booleanisXMLSpace(char c)

Constructor Detail

NormalizeSpaceFunction

public NormalizeSpaceFunction()
Create a new NormalizeSpaceFunction object.

Method Detail

call

public Object call(Context context, 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. Whitespace consists of the characters space (0x32), carriage return (0x0D), linefeed (0x0A), and tab (0x09).

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 String evaluate(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)