Java URL Normalize normalizeURL(URL codebase)

Description

Normalizes URLs to standard ones, eliminating pathname symbols.

License

Apache License

Parameter

Parameter	Description
codebase	- the original URL.

Return

- the normalized URL.

Declaration

public static URL normalizeURL(URL codebase) 

Method Source Code

//package com.java2s;
/*//from  ww  w .  j  a v a  2  s . co  m
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.
 */

import java.io.File;

import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;

public class Main {
    /**
     * Normalizes URLs to standard ones, eliminating pathname symbols.
     *
     * @param codebase -
     *            the original URL.
     * @return - the normalized URL.
     */
    public static URL normalizeURL(URL codebase) {
        if (codebase != null && "file".equals(codebase.getProtocol())) {
            try {
                if (codebase.getHost().length() == 0) {
                    String path = codebase.getFile();

                    if (path.length() == 0) {
                        // codebase is "file:"
                        path = "*";
                    }
                    return filePathToURI(new File(path).getAbsolutePath()).normalize().toURL();
                } else {
                    // codebase is "file://<smth>"
                    return codebase.toURI().normalize().toURL();
                }
            } catch (Exception e) {
                // Ignore
            }
        }
        return codebase;
    }

    /**
     * Converts a file path to URI without accessing file system
     * (like {File#toURI()} does).
     *
     * @param path -
     *            file path.
     * @return - the resulting URI.
     * @throw URISyntaxException
     */
    public static URI filePathToURI(String path) throws URISyntaxException {
        path = path.replace(File.separatorChar, '/');

        if (!path.startsWith("/")) {
            return new URI("file", null, new StringBuilder(path.length() + 1).append('/').append(path).toString(),
                    null, null);
        }
        return new URI("file", null, path, null, null);
    }
}

Related

1. NormalizeURL(String URL)
2. normalizeUrl(String url)
3. normalizeUrl(String url)
4. normalizeUrl(String url)
5. normalizeUrl(String url)
6. normalizeUrl(URL url)
7. normalizeUrl(URL url)
8. normalizeURL(URL url)
9. normalizeUrl(URL url)