Module org.sejda.commons

Package org.sejda.commons.util

Class NumericalSortFilenameComparator

java.lang.Object

org.sejda.commons.util.NumericalSortFilenameComparator

All Implemented Interfaces:

Comparator<File>

public class NumericalSortFilenameComparator
extends Object
implements Comparator<File>

Comparator for filenames that performs a numerical sort if the file names start or end with digits. It allows to specify a fallback comparator to use in case the numerical sort fails. The goal is to behave as close as possible to file managers sorting results.

Author:

Andrea Vacondio

Constructor Summary

Constructors

Constructor	Description
NumericalSortFilenameComparator()	Comparator performing numerical sort with fallback to file name case-insensitive compare in case numerical sort fails
NumericalSortFilenameComparator(Comparator<File> fallback)

Method Summary

Modifier and Type	Method	Description
int	compare(File a, File b)

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

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

NumericalSortFilenameComparator

public NumericalSortFilenameComparator(Comparator<File> fallback)

Parameters:

fallback - the comparator to use when numerical sorting fails. Default is file name case-insensitive compare

NumericalSortFilenameComparator

public NumericalSortFilenameComparator()

Comparator performing numerical sort with fallback to file name case-insensitive compare in case numerical sort fails

Method Details

compare

public int compare(File a,
 File b)

Specified by:

compare in interface Comparator<File>