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Contains the entire NEBA core implementation, i.e. the framework that interprets the NEBA API annotations and provides implementations for the service and lifecycle callback interfaces provided in the NEBA API. This package must not export anything as its implementation details are entirely private.

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/**
 * Copyright 2013 the original author or authors.
 * 
 * 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 io.neba.core.mvc;

import org.apache.sling.api.request.RequestParameter;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;

import static org.apache.commons.io.IOUtils.closeQuietly;
import static org.apache.commons.io.IOUtils.copy;

/**
 * Uses the {@link org.apache.sling.api.SlingHttpServletRequest} {@link RequestParameter} API
 * to provide a {@link MultipartFile}.
 *  
 * @author Olaf Otto
 */
public class SlingMultipartFile implements MultipartFile {
	private final RequestParameter source;
	private final String name;

	public SlingMultipartFile(String paramName, RequestParameter requestParameter) {
		this.source = requestParameter;
		this.name = paramName;
	}

	@Override
	public String getName() {
		return this.name;
	}

	@Override
	public String getOriginalFilename() {
		return this.source.getFileName();
	}

	@Override
	public String getContentType() {
		return this.source.getContentType();
	}

	@Override
	public boolean isEmpty() {
		return this.source.getSize() == 0L;
	}

	@Override
	public long getSize() {
		return this.source.getSize();
	}

	@Override
	public byte[] getBytes() throws IOException {
		return this.source.get();
	}

	@Override
	public InputStream getInputStream() throws IOException {
		return this.source.getInputStream();
	}

	@Override
	public void transferTo(File dest) throws IOException, IllegalStateException {
		if (dest.exists() && !dest.delete()) {
			throw new IOException(
					"Destination file [" + dest.getAbsolutePath() + "] already exists and could not be deleted");
		}
		final InputStream in = getInputStream();
		final OutputStream out = new BufferedOutputStream(new FileOutputStream(dest));
		try {
            copy(in, out);
            out.flush();
		} finally {
            closeQuietly(out);
		    closeQuietly(in);
		}
	}
}