cdr.forms.DepositFile.java Source code

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Here is the source code for cdr.forms.DepositFile.java

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/**
 * Copyright 2010 The University of North Carolina at Chapel Hill
 *
 * 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 cdr.forms;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.regex.Pattern;

import org.apache.commons.codec.binary.Hex;

public class DepositFile {

    private File file;
    private String filename;
    private String contentType;
    private long size;
    private boolean external;

    public File getFile() {
        return file;
    }

    public void setFile(File file) {
        this.file = file;
    }

    public String getFilename() {
        return filename;
    }

    public void setFilename(String filename) {
        this.filename = filename;
    }

    public String getContentType() {
        return contentType;
    }

    public void setContentType(String contentType) {
        this.contentType = contentType;
    }

    public long getSize() {
        return size;
    }

    public void setSize(long size) {
        this.size = size;
    }

    public String getExtension() {
        String extension = "";
        int index = filename.lastIndexOf('.');
        if (index > 0)
            extension = filename.substring(index);
        if (!Pattern.matches("^\\.[a-zA-Z0-9]+$", extension))
            extension = "";
        return extension;
    }

    public boolean isExternal() {
        return external;
    }

    public void setExternal(boolean external) {
        this.external = external;
    }

    public String getHexDigest(String algorithm) throws NoSuchAlgorithmException, IOException {

        return new String(Hex.encodeHex(this.getDigest(algorithm)));

    }

    private byte[] getDigest(String algorithm) throws NoSuchAlgorithmException, IOException {

        InputStream input = null;

        try {

            MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
            messageDigest.reset();

            input = new FileInputStream(file);

            byte[] buffer = new byte[1048576];
            int count;

            while ((count = input.read(buffer, 0, buffer.length)) != -1) {
                messageDigest.update(buffer, 0, count);
            }

            return messageDigest.digest();

        } finally {

            if (input != null) {
                input.close();
            }

        }

    }

}