name.richardson.james.bukkit.utilities.command.argument.AbstractArgument.java Source code

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Here is the source code for name.richardson.james.bukkit.utilities.command.argument.AbstractArgument.java

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/*
 * Copyright (c) 2014 James Richardson.
 *
 * AbstractArgument.java is part of BukkitUtilities.
 *
 * bukkit-utilities 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.
 *
 * bukkit-utilities 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
 * bukkit-utilities. If not, see <http://www.gnu.org/licenses/>.
 */

package name.richardson.james.bukkit.utilities.command.argument;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;

import org.apache.commons.lang.StringUtils;

import name.richardson.james.bukkit.utilities.command.argument.suggester.Suggester;

public abstract class AbstractArgument implements Argument, ArgumentMetadata {

    private final ArgumentMetadata metadata;
    private Suggester suggester;
    private String value;
    private Collection<String> values = new ArrayList<String>();

    public AbstractArgument(final ArgumentMetadata metadata, Suggester suggester) {
        this.metadata = metadata;
        this.suggester = suggester;
    }

    protected final String[] getSeparatedValues(final String argument) {
        return StringUtils.split(argument, ",");
    }

    public final String getId() {
        return metadata.getId();
    }

    @Override
    public final String getName() {
        return metadata.getName();
    }

    public void parseValue(final String argument) {
        setValue(null);
        String[] match = getMatch(argument);
        if (match != null)
            setValues(match);
    }

    public final String getError() {
        return metadata.getError();
    }

    @Override
    public final String getDescription() {
        return metadata.getDescription();
    }

    @Override
    public String getString() {
        String value = null;
        Iterator<String> iterator = values.iterator();
        if (iterator.hasNext())
            value = iterator.next();
        return value;
    }

    public final Collection<String> getStrings() {
        if (values.contains(null) && values.size() == 1) {
            return Collections.emptyList();
        } else {
            return Collections.unmodifiableCollection(values);
        }
    }

    protected abstract String[] getMatch(String argument);

    protected final Suggester getSuggester() {
        return suggester;
    }

    protected final void setValue(final String value) {
        this.values.clear();
        this.values.add(value);
    }

    protected final void setValues(final String[] values) {
        this.values.clear();
        for (String value : values) {
            this.values.add(value);
        }
    }

}