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/*
 * Copyright 2011, Unitils.org
 * 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.unitils.io.conversion.impl;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringWriter;

import org.unitils.io.conversion.ConversionStrategy;
import org.unitils.thirdparty.org.apache.commons.io.IOUtils;

/**
 * This conversion strategy will try to convert the input stream into a String. The default file extension for this
 * conversion strategy is txt. So when not overriding the default file when using the @FileContent the file should
 * end with '.txt' .
 *
 * @author Jeroen Horemans
 * @author Tim Ducheyne
 * @author Thomas De Rycke
 * @since 3.3
 */
public class StringConversionStrategy
    implements ConversionStrategy {
    @Override
    public String convertContent(InputStream inputStream, String encoding)
        throws IOException {
        StringWriter writer = new StringWriter();
        InputStreamReader in = new InputStreamReader(inputStream, encoding);

        IOUtils.copy(in, writer);
        return writer.toString();
    }

    @Override
    public String getDefaultFileExtension() {
        return "txt";
    }

    @Override
    public Class getTargetType() {
        return String.class;
    }
}