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The free Java library for Asterisk PBX integration.
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/*
 *  Copyright 2004-2006 Stefan Reuter
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.asteriskjava.config;

import org.asteriskjava.lock.LockableMap;
import org.asteriskjava.lock.Locker.LockCloser;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

/**
 * An Asterisk configuration file read from the filesystem.
 *
 * @author srt
 * @version $Id$
 * @since 1.0.0
 */
public class ConfigFileImpl implements ConfigFile {
    private final String filename;
    protected final LockableMap categories;

    public ConfigFileImpl(String filename, Map categories) {
        this.filename = filename;
        this.categories = new LockableMap<>(categories);
    }

    public String getFilename() {
        return filename;
    }

    public Map> getCategories() {
        final Map> c;

        c = new TreeMap<>();

        try (LockCloser closer = categories.withLock()) {
            for (Category category : categories.values()) {
                List lines;

                lines = new ArrayList<>();
                for (ConfigElement element : category.getElements()) {
                    if (element instanceof ConfigVariable) {
                        ConfigVariable cv = (ConfigVariable) element;
                        lines.add(cv.getName() + "=" + cv.getValue());
                    }
                }
                c.put(category.getName(), lines);
            }
        }

        return c;
    }

    public String getValue(String categoryName, String key) {
        final Category category;

        category = getCategory(categoryName);
        if (category == null) {
            return null;
        }

        for (ConfigElement element : category.getElements()) {
            if (element instanceof ConfigVariable) {
                ConfigVariable cv = (ConfigVariable) element;

                if (cv.getName().equals(key)) {
                    return cv.getValue();
                }
            }
        }
        return null;
    }

    public List getValues(String categoryName, String key) {
        final Category category;
        final List result;

        category = getCategory(categoryName);
        result = new ArrayList<>();
        if (category == null) {
            return result;
        }

        for (ConfigElement element : category.getElements()) {
            if (element instanceof ConfigVariable) {
                ConfigVariable cv = (ConfigVariable) element;

                if (cv.getName().equals(key)) {
                    result.add(cv.getValue());
                }
            }
        }
        return result;
    }

    protected Category getCategory(String name) {
        try (LockCloser closer = categories.withLock()) {
            return categories.get(name);
        }
    }
}