Dépôt officiel du code source de l'ERP OpenConcerto

/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2011-2019 OpenConcerto, by ILM Informatique. All rights reserved.

 *

 * The contents of this file are subject to the terms of the GNU General Public License Version 3

 * only ("GPL"). You may not use this file except in compliance with the License. You can obtain a

 * copy of the License at http://www.gnu.org/licenses/gpl-3.0.html See the License for the specific

 * language governing permissions and limitations under the License.

 *

 * When distributing the software, include this License Header Notice in each file.

 */

 package org.openconcerto.utils.text;

import org.openconcerto.utils.i18n.I18nUtils;

import java.text.FieldPosition;

import java.text.Format;

import java.text.ParsePosition;

import java.util.Arrays;

import java.util.Locale;

import java.util.ResourceBundle;

import net.jcip.annotations.Immutable;

@Immutable

public class BooleanFormat extends Format {

    static private final boolean[] BOOLEAN_VALUES = new boolean[] { false, true };

    static private final BooleanFormat NUMBER_INSTANCE = new BooleanFormat("0", "1");

    static private String[] getFormattedBooleans(final Locale l, final boolean yesNo) {

        final ResourceBundle bundle = ResourceBundle.getBundle(I18nUtils.RSRC_BASENAME, l);

        final String[] res = new String[BOOLEAN_VALUES.length];

        for (int i = 0; i < res.length; i++) {

            final boolean b = BOOLEAN_VALUES[i];

            res[i] = bundle.getString(yesNo ? I18nUtils.getYesNoKey(b) : I18nUtils.getBooleanKey(b));

        }

        return res;

    }

    static public BooleanFormat createYesNo(final Locale l) {

        return new BooleanFormat(getFormattedBooleans(l, true));

    }

    static public BooleanFormat createTrueFalse(final Locale l) {

        return new BooleanFormat(getFormattedBooleans(l, false));

    }

    static public final BooleanFormat getNumberInstance() {

        return NUMBER_INSTANCE;

    }

    static public final BooleanFormat[] getAll(final Locale l) {

        return new BooleanFormat[] { createTrueFalse(l), createYesNo(l), getNumberInstance() };

    }

    private final String[] formattedValues;

    public BooleanFormat() {

        this(getFormattedBooleans(Locale.getDefault(), false));

    }

    public BooleanFormat(final String falseValue, final String trueValue) {

        this(new String[] { falseValue, trueValue });

    }

    // not public because parameter isn't copied

    private BooleanFormat(final String[] formattedValues) {

        this.formattedValues = formattedValues;

    }

    public final String format(boolean b) {

        return this.formattedValues[b ? 1 : 0];

    }

    protected final String format(Boolean b) {

        return b == null ? "" : format(b.booleanValue());

    }

    @Override

    public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {

        if (obj == null) {

            return toAppendTo;

        } else if (obj instanceof Boolean) {

            return toAppendTo.append(this.format((Boolean) obj));

        } else {

            throw new IllegalArgumentException("Not a boolean : " + obj);

        }

    }

    @Override

    public Object parseObject(String source, ParsePosition pos) {

        for (final boolean b : BOOLEAN_VALUES) {

            final String value = format(b);

            if (source.substring(pos.getIndex()).startsWith(value)) {

                pos.setIndex(pos.getIndex() + value.length());

                return b;

            }

        }

        pos.setErrorIndex(pos.getIndex());

        return null;

    }

    @Override

    public int hashCode() {

        final int prime = 31;

        int result = 1;

        result = prime * result + Arrays.hashCode(this.formattedValues);

        return result;

    }

    @Override

    public boolean equals(Object obj) {

        if (this == obj)

            return true;

        if (obj == null)

            return false;

        if (getClass() != obj.getClass())

            return false;

        final BooleanFormat other = (BooleanFormat) obj;

        return Arrays.equals(this.formattedValues, other.formattedValues);

    }

    @Override

    public String toString() {

        return this.getClass().getSimpleName() + " with " + Arrays.asList(this.formattedValues);

    }

}