org.lucidj.gluon.GluonUtil.java Source code

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Here is the source code for org.lucidj.gluon.GluonUtil.java

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/*
 * Copyright 2017 NEOautus Ltd. (http://neoautus.com)
 *
 * 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.lucidj.gluon;

import java.io.IOException;
import java.io.Writer;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

import org.apache.commons.lang3.StringEscapeUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class GluonUtil {
    private final static Logger log = LoggerFactory.getLogger(GluonUtil.class);

    private static void dump_instance(GluonInstance instance, Writer writer, int level) throws IOException {
        String indent = new String(new char[level * 8]).replace('\0', ' ');

        String[] keyset = instance.getPropertyKeys();

        String class_name = instance._getValueObject() == null ? ""
                : " (" + instance._getValueObject().getClass().getName() + ") "
                        + (instance.isPrimitive() ? "PRIMITIVE" : "OBJECT");

        writer.write(indent + "Backing Object: "
                + ((instance._getValueObject() == null) ? "<null>" : instance._getValueObject()) + class_name
                + "\n");
        writer.write(indent + "Representation: "
                + ((instance.getValue() == null) ? "<null>" : StringEscapeUtils.escapeJava(instance.getValue()))
                + "\n");

        // First write all X- properties
        if (keyset == null) {
            //writer.write (indent + "No Properties\n");
        } else {
            for (String key : keyset) {
                GluonInstance entry = instance.getPropertyEntry(key);
                writer.write(
                        indent + "Property: " + key + "=" + StringEscapeUtils.escapeJava(entry.getValue()) + "\n");
                dump_instance(entry, writer, level + 1);
            }
        }

        if (instance.getObjectEntries() == null) {
            //writer.write (indent + "No Objects\n");
        } else {
            for (GluonInstance obj : instance.getObjectEntries()) {
                writer.write(indent + "Object:\n");
                dump_instance(obj, writer, level + 1);
            }
        }
    }

    public static Path get_data_dir() {
        Path data_dir = Paths.get(System.getProperty("system.data"), "cache", GluonUtil.class.getName());

        if (!Files.exists(data_dir)) {
            try {
                Files.createDirectory(data_dir);
            } catch (IOException e) {
                return (null);
            }
        }
        return (data_dir);
    }

    public static void dumpRepresentation(GluonInstance root, String filename) {
        // TODO: THIS SHOULD BE RECONFIGURABLE
        Path userdir = get_data_dir();

        if (userdir == null) {
            return;
        }

        Path destination_path = userdir.resolve(filename);
        Charset cs = Charset.forName("UTF-8");
        Writer writer = null;

        try {
            writer = Files.newBufferedWriter(destination_path, cs);
            dump_instance(root, writer, 1);
        } catch (Exception e) {
            log.error("Exception on serialization", e);
        } finally {
            try {
                if (writer != null) {
                    writer.close();
                }
            } catch (Exception ignore) {
            }
            ;
        }
    }
}

// EOF