/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.jackrabbit.vault.fs.io;

import java.io.IOException;

import org.apache.jackrabbit.vault.util.Constants;
import org.apache.jackrabbit.util.Text;

/**
 * Base class for archives
 */
abstract class AbstractArchive implements Archive {

    @Override
    public Entry getEntry(String path) throws IOException {
        String[] segs = Text.explode(path, '/');
        Entry root = getRoot();
        for (String name: segs) {
            root = root.getChild(name);
            if (root == null) {
                break;
            }
        }
        return root;
    }

    @Override
    public Entry getJcrRoot() throws IOException {
        return getRoot().getChild(Constants.ROOT_DIR);
    }

    @Override
    public Archive getSubArchive(String rootPath, boolean asJcrRoot) throws IOException {
        Entry root = getEntry(rootPath);
        return root == null ? null : new SubArchive(this, root, asJcrRoot);
    }
}