net.sf.saxon.value
Class Whitespace

java.lang.Object
  net.sf.saxon.value.Whitespace

public class Whitespace
extends Object

This class provides helper methods and constants for handling whitespace

Field Summary

static int	ALL
static int	COLLAPSE
static int	IGNORABLE
static int	NONE The values NONE, IGNORABLE, and ALL identify which kinds of whitespace text node should be stripped when building a source tree
static int	PRESERVE The values PRESERVE, REPLACE, and COLLAPSE represent the three options for whitespace normalization.
static int	REPLACE
static int	UNSPECIFIED

Method Summary

static CharSequence	applyWhitespaceNormalization(int action, CharSequence value) Apply schema-defined whitespace normalization to a string
static CharSequence	collapseWhitespace(CharSequence in) Collapse whitespace as defined in XML Schema
static boolean	containsWhitespace(CharSequence value) Determine if a string contains any whitespace
static boolean	isWhite(CharSequence content) Determine if a string is all-whitespace
static boolean	isWhitespace(int ch) Test whether a character is whitespace
static CharSequence	normalizeWhitespace(CharSequence in) Normalize whitespace as defined in XML Schema
static CharSequence	removeAllWhitespace(CharSequence value) Remove all whitespace characters from a string
static CharSequence	removeLeadingWhitespace(CharSequence value) Remove leading whitespace characters from a string
static CharSequence	trimWhitespace(CharSequence in) Remove leading and trailing whitespace.

Methods inherited from class java.lang.Object

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

Field Detail

PRESERVE

public static final int PRESERVE

The values PRESERVE, REPLACE, and COLLAPSE represent the three options for whitespace normalization. They are deliberately chosen in ascending strength order; given a number of whitespace facets, only the strongest needs to be carried out.

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Constant Field Values

REPLACE

public static final int REPLACE

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Constant Field Values

COLLAPSE

public static final int COLLAPSE

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Constant Field Values

NONE

public static final int NONE

The values NONE, IGNORABLE, and ALL identify which kinds of whitespace text node should be stripped when building a source tree

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Constant Field Values

IGNORABLE

public static final int IGNORABLE

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Constant Field Values

ALL

public static final int ALL

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Constant Field Values

UNSPECIFIED

public static final int UNSPECIFIED

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Constant Field Values

Method Detail

isWhitespace

public static boolean isWhitespace(int ch)

Test whether a character is whitespace

applyWhitespaceNormalization

public static CharSequence applyWhitespaceNormalization(int action,
                                                        CharSequence value)

Apply schema-defined whitespace normalization to a string

Parameters:

action - the action to be applied: one of PRESERVE, REPLACE, or COLLAPSE

value - the value to be normalized

Returns:

the value after normalization

removeAllWhitespace

public static CharSequence removeAllWhitespace(CharSequence value)

Remove all whitespace characters from a string

removeLeadingWhitespace

public static CharSequence removeLeadingWhitespace(CharSequence value)

Remove leading whitespace characters from a string

containsWhitespace

public static boolean containsWhitespace(CharSequence value)

Determine if a string contains any whitespace

isWhite

public static final boolean isWhite(CharSequence content)

Determine if a string is all-whitespace

Parameters:

content - the string to be tested

Returns:

true if the supplied string contains no non-whitespace characters

normalizeWhitespace

public static CharSequence normalizeWhitespace(CharSequence in)

Normalize whitespace as defined in XML Schema

collapseWhitespace

public static CharSequence collapseWhitespace(CharSequence in)

Collapse whitespace as defined in XML Schema

trimWhitespace

public static CharSequence trimWhitespace(CharSequence in)

Remove leading and trailing whitespace. This has the same effect as collapseWhitespace, but is cheaper, for use by data types that do not allow internal whitespace.

Parameters:

in - the input string whose whitespace is to be removed

Returns:

the result of removing excess whitespace