Application: gvSIG desktop » Library: org.gvsig.tools

/*

 * gvSIG. Desktop Geographic Information System.

 * 

 * Copyright (C) 2007-2020 gvSIG Association.

 * 

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 * 

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License 

 * along with this program. If not, see <https://www.gnu.org/licenses/>. 

 * 

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.tools.util;

import java.math.BigDecimal;

import java.math.BigInteger;

import java.util.Comparator;

import org.apache.commons.io.FilenameUtils;

import org.apache.commons.io.IOCase;

import org.apache.commons.lang3.StringUtils;

/**

 *

 * @author gvSIG Team

 */

public class CompareUtils {

    public static final Comparator EQUALS_IGNORECASE_COMPARATOR = new NullSafeComparator() {

        @Override

        public int safeCompare(Object o1, Object o2) {

            return StringUtils.compareIgnoreCase(o1.toString(), o2.toString());

        }

    };

    public static abstract class NullSafeComparator<T> implements Comparator<T> {

        private final boolean nullIsLess;

        public NullSafeComparator(boolean nullIsLess) {

            this.nullIsLess = nullIsLess;

        }

        public NullSafeComparator() {

            this(true);

        }

        @Override

        public final int compare(T o1, T o2) {

            if (o1 == o2) {

                return 0;

            }

            if (o1 == null) {

                return nullIsLess ? -1 : 1;

            }

            if (o2 == null) {

                return nullIsLess ? 1 : - 1;

            }

            return safeCompare(o1, o2);        

        }

        public abstract int safeCompare(T o1, T o2);

    }

    public static boolean equals(String str1, String str2) {

        return compare(str1, str2, true)==0;

    }

    public static int compare(Comparable c1, Comparable c2) {

        return compare(c1, c2, true);

    }

    public static int compare(Comparator comparator, Object c1, Object c2) {

        return compare(comparator, c1, c2, true);

    }

    public static int compare(Comparator comparator, Object c1, Object c2, boolean nullIsLess) {

        if (c1 == c2) {

            return 0;

        }

        if (c1 == null) {

            return nullIsLess ? -1 : 1;

        }

        if (c2 == null) {

            return nullIsLess ? 1 : - 1;

        }

        if( comparator!=null ) {

            return comparator.compare(c1, c2);        

        }

        if( c1 instanceof Comparable && c2 instanceof Comparable ) {

            return ((Comparable)c1).compareTo(((Comparable)c2));

        }

        return EQUALS_IGNORECASE_COMPARATOR.compare(c1, c2);

    }

    public static int compare(Comparable c1, Comparable c2, boolean nullIsLess) {

        if (c1 == c2) {

            return 0;

        }

        if (c1 == null) {

            return nullIsLess ? -1 : 1;

        }

        if (c2 == null) {

            return nullIsLess ? 1 : - 1;

        }

        if( c1 instanceof CharSequence || c2 instanceof CharSequence ) {

            return compare(c1.toString(), c2.toString(), true);

        }

        if( c2 instanceof Number ){

            if (c1 instanceof Double) { // Double - Number

                return c1.compareTo(((Number)c2).doubleValue());

            }

            if (c1 instanceof Float) { // Float - Number

                return c1.compareTo(((Number)c2).floatValue());

            }

            if (c1 instanceof BigDecimal) { // BigDecimal - Number

                if (c2 instanceof BigDecimal) { // BigDecimal - BigDecimal

                    return c1.compareTo(c2);

                } else { // BigDecimal - Number

                    double value = ((Number)c2).doubleValue();

                    if(value == Double.NEGATIVE_INFINITY){

                        return 1;

                    }

                    if(value == Double.POSITIVE_INFINITY){

                        return -1;

                    }

                    return c1.compareTo(BigDecimal.valueOf(value));

                }

            }

            if (c1 instanceof BigInteger) { // BigInteger - Number

                if (c2 instanceof BigInteger) { // BigInteger - BigInteger

                    return c1.compareTo(c2);

                } else {

                    long value = ((Number)c2).longValue();

                    return c1.compareTo(BigInteger.valueOf(value));

                }

            }

            if (c1 instanceof Number) {

                if (c2 instanceof Double) { // Number - Double

                    return Double.valueOf(((Number)c1).doubleValue()).compareTo(((Double)c2));

                }

                if (c2 instanceof Float) { // Number - Float

                    return Float.valueOf(((Number)c1).floatValue()).compareTo(((Float)c2));

                }

                if (c2 instanceof BigDecimal) { // Number - BigDecimal

                    double value = ((Number)c1).doubleValue();

                    if(value == Double.NEGATIVE_INFINITY){

                        return -1;

                    }

                    if(value == Double.POSITIVE_INFINITY){

                        return 1;

                    }

                    return BigDecimal.valueOf(value).compareTo((BigDecimal)c2);

                }

                if (c2 instanceof BigInteger) { // Number - BigInteger

                    return BigInteger.valueOf(((Number)c1).longValue()).compareTo((BigInteger)c2);

                }

                // (Long, Int, Byte) - (Long, Int, Byte)

                return Long.valueOf(((Number)c1).longValue()).compareTo(((Number)c2).longValue());

            }

        }

        return c1.compareTo(c2);        

    }

    public static int compare(String str1, String str2) {

        return compare(str1, str2, true);

    }

    @SuppressWarnings("StringEquality")

    public static int compare(String str1, String str2, boolean nullIsLess) {

        if (str1 == str2) {

            return 0;

        }

        if (str1 == null) {

            return nullIsLess ? -1 : 1;

        }

        if (str2 == null) {

            return nullIsLess ? 1 : - 1;

        }

        str2 = StringUtils.stripAccents(str2);

        str1 = StringUtils.stripAccents(str1);

        return StringUtils.compareIgnoreCase(str1, str2, nullIsLess);

    }

    public static boolean match(Object value, String matcher) {

        if( value == null ) {

            return false;

        }

        return match(value.toString(),matcher);

    }

    public static boolean match(String value, String matcher) {

        if ( StringUtils.isBlank(value) ) {

            return false;

        }

        if (StringUtils.isBlank(matcher)) {

            return true;

        }

        matcher = StringUtils.stripAccents(matcher);

        value = StringUtils.stripAccents(value);

        return FilenameUtils.wildcardMatch(value, matcher, IOCase.INSENSITIVE);

    }

    public static boolean matchCaseSensitive(String value, String matcher) {

        if ( StringUtils.isBlank(value) ) {

            return false;

        }

        if (StringUtils.isBlank(matcher)) {

            return true;

        }

        matcher = StringUtils.stripAccents(matcher);

        value = StringUtils.stripAccents(value);

        return FilenameUtils.wildcardMatch(value, matcher, IOCase.SENSITIVE);

    }

    public static boolean matchAccentsSensitive(String value, String matcher) {

        if ( StringUtils.isBlank(value) ) {

            return false;

        }

        if (StringUtils.isBlank(matcher)) {

            return true;

        }

        return FilenameUtils.wildcardMatch(value, matcher, IOCase.INSENSITIVE);

    }

    public static boolean matchCaseAndAccentsSensitive(String value, String matcher) {

        if ( StringUtils.isBlank(value) ) {

            return false;

        }

        if (StringUtils.isBlank(matcher)) {

            return true;

        }

        return FilenameUtils.wildcardMatch(value, matcher, IOCase.SENSITIVE);

    }

}