org.apache.sling.scripting.sightly.impl.engine.SightlyEngineConfiguration.java Source code

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Here is the source code for org.apache.sling.scripting.sightly.impl.engine.SightlyEngineConfiguration.java

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 * 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
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package org.apache.sling.scripting.sightly.impl.engine;

import java.io.IOException;
import java.io.InputStream;
import java.util.Dictionary;
import java.util.jar.Attributes;
import java.util.jar.Manifest;

import org.apache.commons.lang.StringUtils;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Service;
import org.apache.sling.commons.osgi.PropertiesUtil;
import org.osgi.service.component.ComponentContext;

/**
 * Holds various HTL engine global configurations.
 */
@Component(metatype = true, label = "Apache Sling Scripting HTL Engine Configuration", description = "HTL Engine Configuration Options")
@Service(SightlyEngineConfiguration.class)
@Properties({
        @Property(name = SightlyEngineConfiguration.SCR_PROP_NAME_KEEPGENERATED, boolValue = SightlyEngineConfiguration.SCR_PROP_DEFAULT_KEEPGENERATED, label = "Keep Generated Java Source Code", description = "If enabled, the Java source code generated during HTL template files compilation will be stored. "
                + "Its location is dependent on the available org.apache.sling.commons.classloader.ClassLoaderWriter.") })
public class SightlyEngineConfiguration {

    public static final String SCR_PROP_NAME_KEEPGENERATED = "org.apache.sling.scripting.sightly.keepgenerated";
    public static final boolean SCR_PROP_DEFAULT_KEEPGENERATED = true;

    private String engineVersion = "0";
    private boolean keepGenerated;
    private String bundleSymbolicName = "org.apache.sling.scripting.sightly";

    public String getEngineVersion() {
        return engineVersion;
    }

    public String getBundleSymbolicName() {
        return bundleSymbolicName;
    }

    public String getScratchFolder() {
        return "/" + bundleSymbolicName.replaceAll("\\.", "/");
    }

    public boolean keepGenerated() {
        return keepGenerated;
    }

    protected void activate(ComponentContext componentContext) {
        InputStream ins = null;
        try {
            ins = getClass().getResourceAsStream("/META-INF/MANIFEST.MF");
            if (ins != null) {
                Manifest manifest = new Manifest(ins);
                Attributes attrs = manifest.getMainAttributes();
                String version = attrs.getValue("ScriptEngine-Version");
                if (version != null) {
                    engineVersion = version;
                }
                String symbolicName = attrs.getValue("Bundle-SymbolicName");
                if (StringUtils.isNotEmpty(symbolicName)) {
                    bundleSymbolicName = symbolicName;
                }
            }
        } catch (IOException ioe) {
        } finally {
            if (ins != null) {
                try {
                    ins.close();
                } catch (IOException ignore) {
                }
            }
        }
        Dictionary properties = componentContext.getProperties();
        keepGenerated = PropertiesUtil.toBoolean(properties.get(SCR_PROP_NAME_KEEPGENERATED),
                SCR_PROP_DEFAULT_KEEPGENERATED);
    }
}