pl.maciejwalkowiak.plist.spring.PlistHttpMessageConverter.java Source code

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Here is the source code for pl.maciejwalkowiak.plist.spring.PlistHttpMessageConverter.java

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/*
 * Copyright (c) 2014 Maciej Walkowiak
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package pl.maciejwalkowiak.plist.spring;

import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.AbstractHttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.http.converter.HttpMessageNotWritableException;
import pl.maciejwalkowiak.plist.PlistSerializer;
import pl.maciejwalkowiak.plist.PlistSerializerImpl;

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;

public class PlistHttpMessageConverter extends AbstractHttpMessageConverter<Object> {

    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

    private PlistSerializer plistSerializer;

    private boolean addHeader;

    /**
     * Construct a new {@code PlistHttpMessageConverter}.
     */
    public PlistHttpMessageConverter(boolean addHeader) {
        super(new MediaType("application", "x-plist", DEFAULT_CHARSET),
                new MediaType("application", "x-apple-aspen-mdm-checkin", DEFAULT_CHARSET));

        this.addHeader = addHeader;
        plistSerializer = new PlistSerializerImpl();
    }

    @Override
    protected boolean supports(Class<?> clazz) {
        throw new UnsupportedOperationException();
    }

    @Override
    public boolean canRead(Class<?> clazz, MediaType mediaType) {
        return false;
    }

    @Override
    public boolean canWrite(Class<?> clazz, MediaType mediaType) {
        return canWrite(mediaType);
    }

    @Override
    protected Object readInternal(Class<?> aClass, HttpInputMessage httpInputMessage)
            throws IOException, HttpMessageNotReadableException {
        return null;
    }

    private Charset getCharset(HttpHeaders headers) {
        if (headers == null || headers.getContentType() == null || headers.getContentType().getCharSet() == null) {
            return DEFAULT_CHARSET;
        }
        return headers.getContentType().getCharSet();
    }

    @Override
    protected void writeInternal(Object o, HttpOutputMessage httpOutputMessage)
            throws IOException, HttpMessageNotWritableException {

        Charset charset = getCharset(httpOutputMessage.getHeaders());
        OutputStreamWriter writer = new OutputStreamWriter(httpOutputMessage.getBody(), charset);

        String result = addHeader ? plistSerializer.toXmlPlist(o) : plistSerializer.serialize(o);

        writer.write(result);
        writer.close();
    }
}