Java Resource File toStream(String resource)

Description

to Stream

License

Open Source License

Declaration

private static InputStream toStream(String resource)
            throws MalformedURLException, IOException 

Method Source Code

//package com.java2s;
/**//from   w ww  .j a  va2  s  . com
 * Copyright (c) 2008 Sonatype, Inc. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

public class Main {
    public static final String PROTOCOL_DELIM = "://";
    public static final int PROTOCOL_DELIM_LEN = PROTOCOL_DELIM.length();
    public static final String[] URL_PROTOCOLS = new String[] { "http",
            "https", "dav", "file", "davs", "webdav", "webdavs",
            "dav+http", "dav+https" };

    private static InputStream toStream(String resource)
            throws MalformedURLException, IOException {
        if (resource == null)
            return null;

        int ind = resource.indexOf(PROTOCOL_DELIM);

        if (ind > 1) {
            String protocol = resource.substring(0, ind);
            resource = resource.substring(ind + PROTOCOL_DELIM_LEN);

            for (int i = 0; i < URL_PROTOCOLS.length; i++) {
                String p = URL_PROTOCOLS[i];

                if (protocol.regionMatches(true, 0, p, 0, p.length()))
                    return new URL(p + PROTOCOL_DELIM + resource)
                            .openStream();
            }
        }

        return new FileInputStream(new File(resource));
    }
}

Related

1. put(String resource, Map headers, String data)
2. resourceExists(String s)
3. runtimeResourceLocation(String src)
4. sanitizeResource(String inputResource)
5. toFile(Class c, String resource)
6. unpackDeps(final String resource, final ClassLoader cl)