com.github.zdsiyan.maven.plugin.smartconfig.internal.PropertyConfigurator.java Source code

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Here is the source code for com.github.zdsiyan.maven.plugin.smartconfig.internal.PropertyConfigurator.java

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/*-
 * ========================LICENSE_START=================================
 * Smartconfig Maven Plugin
 * *
 * Copyright (C) 2016 BruceZhang
 * *
 * 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.
 * =========================LICENSE_END==================================
 */

package com.github.zdsiyan.maven.plugin.smartconfig.internal;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.List;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;

import com.github.zdsiyan.maven.plugin.smartconfig.Configurator;
import com.github.zdsiyan.maven.plugin.smartconfig.model.PointHandle;

/**
 * properties?.
 *
 * @author Kevin Zou <kevinz@skfiy.org>
 */
public class PropertyConfigurator implements Configurator {

    @Override
    public ByteArrayOutputStream execute(InputStream in, Charset charset, List<PointHandle> pointhandles)
            throws IOException {
        try {
            PropertiesConfiguration configuration = new PropertiesConfiguration();
            configuration.load(in, charset.name());

            pointhandles.forEach(point -> {
                switch (point.getMode()) {
                case insert:
                    configuration.addProperty(point.getExpression(), point.getValue());
                    break;
                case delete:
                    configuration.setProperty(point.getExpression(), "");
                    break;
                case replace:
                default:
                    configuration.setProperty(point.getExpression(), point.getValue());
                    break;
                }
            });

            // output
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            configuration.save(out, charset.name());
            return out;
        } catch (ConfigurationException ex) {
            // FIXME
            throw new RuntimeException(ex);
        }
    }

}