freemarker-generator-tools/src/main/java/org/apache/freemarker/generator/tools/properties/PropertiesTool.java

/*
 * 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.freemarker.generator.tools.properties;

import org.apache.freemarker.generator.base.datasource.DataSource;
import org.apache.freemarker.generator.base.util.PropertiesFactory;

import java.io.IOException;
import java.io.InputStream;
import java.util.Collection;
import java.util.List;
import java.util.Properties;
import java.util.stream.Collectors;

public class PropertiesTool {

    public Properties parse(DataSource dataSource) {
        try (InputStream is = dataSource.getUnsafeInputStream()) {
            return PropertiesFactory.create(is);
        } catch (IOException e) {
            throw new RuntimeException("Failed to parse properties: " + dataSource, e);
        }
    }

    public List<Properties> parse(Collection<DataSource> dataSources) {
        return dataSources.stream()
                .map(this::parse)
                .collect(Collectors.toList());
    }

    public Properties parse(String value) {
        return PropertiesFactory.create(value);
    }

    @Override
    public String toString() {
        return "Process JDK properties files";
    }
}