org.unix4j.util.sort

Class TrimBlanksStringComparator

java.lang.Object

org.unix4j.util.sort.TrimBlanksStringComparator

All Implemented Interfaces:

java.util.Comparator<java.lang.String>

public class TrimBlanksStringComparator
extends java.lang.Object
implements java.util.Comparator<java.lang.String>

Comparator for strings or character sequences trimming leading or trailing blanks or both before forwarding the actual comparison to a delegate comparator.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TrimBlanksStringComparator.Mode Mode defining which end of the strings should be trimmed for blanks.

Constructor Summary

Constructors

Constructor and Description
TrimBlanksStringComparator(TrimBlanksStringComparator.Mode mode, java.util.Comparator<? super java.lang.CharSequence> comparator) Constructor with mode and delegate comparator performing the actual string comparison on the trimmed strings or character sequences.

Method Summary

Modifier and Type	Method and Description
int	compare(java.lang.String s1, java.lang.String s2)
(package private) static int	findEndTrimBlanks(java.lang.CharSequence s) Finds and returns the end of the given character sequence after trimming spaces and tabs.
(package private) static int	findStartTrimBlanks(java.lang.CharSequence s) Finds and returns the start of the given character sequence after trimming spaces and tabs.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

TrimBlanksStringComparator

public TrimBlanksStringComparator(TrimBlanksStringComparator.Mode mode,
                                  java.util.Comparator<? super java.lang.CharSequence> comparator)

Constructor with mode and delegate comparator performing the actual string comparison on the trimmed strings or character sequences.

Parameters:

mode - the mode defining which end of the character sequence should be trimmed

comparator - delegate comparator performing the actual comparison after trimming

Method Detail

compare

public int compare(java.lang.String s1,
                   java.lang.String s2)

Specified by:

compare in interface java.util.Comparator<java.lang.String>

findStartTrimBlanks

static int findStartTrimBlanks(java.lang.CharSequence s)

Finds and returns the start of the given character sequence after trimming spaces and tabs.

Parameters:

s - the character sequence

Returns:

the index containing the first non-blank character, or the length of the character sequence if all characters are blank

See Also:

StringUtil.findStartTrimWhitespace(CharSequence)

findEndTrimBlanks

static int findEndTrimBlanks(java.lang.CharSequence s)

Finds and returns the end of the given character sequence after trimming spaces and tabs.

Parameters:

s - the character sequence

Returns:

the index after the last non-blank character, or zero if all characters are blank

See Also:

StringUtil.findEndTrimWhitespace(CharSequence)