io.wcm.devops.conga.plugins.aem.util.ContentElementHandler.java Source code

Introduction

Here is the source code for io.wcm.devops.conga.plugins.aem.util.ContentElementHandler.java

Source

/*
 * #%L
 * wcm.io
 * %%
 * Copyright (C) 2017 wcm.io
 * %%
 * 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.
 * #L%
 */
package io.wcm.devops.conga.plugins.aem.util;

import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang3.StringUtils;
import org.apache.sling.jcr.contentparser.ContentHandler;

import io.wcm.tooling.commons.contentpackagebuilder.element.ContentElement;
import io.wcm.tooling.commons.contentpackagebuilder.element.ContentElementImpl;

/**
 * {@link ContentHandler} implementation that produces a tree of {@link ContentElement} items.
 */
final class ContentElementHandler implements ContentHandler {

    private ContentElement root;
    private static final Pattern PATH_PATTERN = Pattern.compile("^((/[^/]+)*)(/([^/]+))$");

    @Override
    public void resource(String path, Map<String, Object> properties) {
        if (StringUtils.equals(path, "/")) {
            root = new ContentElementImpl(null, properties);
        } else {
            if (root == null) {
                throw new RuntimeException("Root resource not set.");
            }
            Matcher matcher = PATH_PATTERN.matcher(path);
            if (!matcher.matches()) {
                throw new RuntimeException("Unexpected path:" + path);
            }
            String relativeParentPath = StringUtils.stripStart(matcher.group(1), "/");
            String name = matcher.group(4);
            ContentElement parent;
            if (StringUtils.isEmpty(relativeParentPath)) {
                parent = root;
            } else {
                parent = root.getChild(relativeParentPath);
            }
            if (parent == null) {
                throw new RuntimeException("Parent '" + relativeParentPath + "' does not exist.");
            }
            parent.getChildren().put(name, new ContentElementImpl(name, properties));
        }
    }

    public ContentElement getRoot() {
        return root;
    }

}