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/*******************************************************************************
* Copyright (c) 2007, 2009 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.jpa.gen.internal.util;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.osgi.framework.Bundle;
/**
* Collections of utility methods handling URLs.
*
*/
public class UrlUtil
{
/**
* The <code>file</code> string indicating a url file protocol.
*/
public static final String FILE_PROTOCOL = "file";
/**
* The <code>file</code> string indicating a url http protocol.
*/
public static final String HTTP_PROTOCOL = "http";
/**
* The <code>file</code> string indicating a url http protocol.
*/
public static final String HTTPS_PROTOCOL = "https";
/**
* The <code>file</code> string indicating a url file protocol.
*/
public static final String JAR_PROTOCOL = "jar";
/**
* Returns true if the specified url is to a file, i.e its protocol is <code>file</code>.
*/
public static boolean isFileUrl(URL url) {
return url != null && FILE_PROTOCOL.equals(url.getProtocol());
}
/**
* Returns true if the specified url is to a jar, i.e its protocol is <code>jar</code>.
* For example <code>jar:file:/C:/testapps/example/WEB-INF/lib/struts.jar!/META-INF/tlds/struts-bean.tld</code>.
*/
public static boolean isJarUrl(URL url) {
return url != null && JAR_PROTOCOL.equals(url.getProtocol());
}
/**
* Returns true if the specified url protocol is http.
*/
public static boolean isHttpUrl(URL url) {
String protocol = url.getProtocol();
return url != null && (HTTP_PROTOCOL.equals(protocol) || HTTPS_PROTOCOL.equals(protocol));
}
/**
* Returns the <code>File</code> corresponding to a url, or null if the url
* protocol is not file.
*/
public static java.io.File getUrlFile(URL url) {
if (isFileUrl(url) && !isJarUrl( url ) ){
File ret = new java.io.File(url.getFile());
return ret ;
}
return null;
}
/**
* Returns the url to a jar file given a url to a file inside
* the jar.
* For example if given
* <code>jar:file:/C:/testapps/example/WEB-INF/lib/struts.jar!/META-INF/tlds/struts-bean.tld</code>
* this method returns <code>file:/C:/testapps/example/WEB-INF/lib/struts.jar</code>.
*
* <p>Returns null if the given url is not recognized as a url to a file
* inside a jar.
*/
public static URL getJarFileUrl(URL url) {
if (!isJarUrl(url)) {
return null;
}
String file = url.getFile(); //file:/C:/testapps/example/WEB-INF/lib/struts.jar!/META-INF/tlds/struts-bean.tld
int index = file.indexOf('!');
if (index < 0) {
return null;
}
String jarFileUrlStr = file.substring(0, index);
try {
return new URL(jarFileUrlStr);
} catch (MalformedURLException e) {
return null;
}
}
public static boolean isRemote(String url){
return url.startsWith("http:")||url.startsWith("https:")||url.startsWith("www.");
}
public static File getTemplateFolder(String plugId , String strPath ){
Bundle bundle = Platform.getBundle( plugId );
Path path = new Path( strPath );
URL url = FileLocator.find(bundle, path, null);
try {
URL templUrl;
templUrl = FileLocator.resolve(url);
File templDir = UrlUtil.getUrlFile(templUrl);
return templDir ;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
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