| /******************************************************************************* |
| * Copyright (c) 2004 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.common.environment.uri; |
| |
| import java.net.URL; |
| import java.util.Hashtable; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.osgi.util.NLS; |
| import org.eclipse.wst.common.internal.environment.eclipse.Messages; |
| import org.eclipse.wst.common.internal.environment.relative.RelativeScheme; |
| |
| /** |
| * |
| * This class provides a default implementation of the IURIFactory interface. |
| * |
| * @since 1.0 |
| */ |
| public class SimpleURIFactory implements IURIFactory |
| { |
| private Hashtable schemes_ = new Hashtable(); |
| |
| /** |
| * @param uri the uri to be created. |
| * @return Creates and returns a new IURI for the given string. |
| * @throws URIException if an error occurs creating this URI. |
| */ |
| public IURI newURI(String uri) throws URIException |
| { |
| IURIScheme scheme = newURIScheme( uri, false ); |
| |
| return scheme.newURI( uri ); |
| } |
| |
| /** |
| * @param url the url to use to create this uri. |
| * @return Creates and returns a new IURI for the given URL. |
| * @throws URIException if an error occurs creating this URI. |
| */ |
| public IURI newURI(URL url) throws URIException |
| { |
| IURIScheme scheme = newURIScheme( url.toString(), false ); |
| |
| return scheme.newURI( url ); |
| } |
| |
| /** |
| * @param schemeOrURI the scheme name or URI from which this scheme is |
| * to be created. |
| * @return Creates and returns a new IURIScheme for the given scheme string. |
| * If the string contains no colons, the entire string is interpretted |
| * as the name of the scheme. If the string contains a colon, then the |
| * substring up to but excluding the first colon is interpretted as the |
| * name of the scheme, meaning the caller can pass in any IURI string in |
| * order to get a IURIScheme object. |
| * @throws URIException if an error occurs creating this URI scheme. |
| */ |
| public IURIScheme newURIScheme(String schemeOrURI) throws URIException |
| { |
| return newURIScheme( schemeOrURI, true ); |
| } |
| |
| /** |
| * This method registers a scheme for a particular protocol. |
| * |
| * @param protocol the protocol. |
| * @param scheme the scheme. |
| */ |
| public void registerScheme( String protocol, IURIScheme scheme ) |
| { |
| schemes_.put( protocol, scheme ); |
| } |
| |
| private IURIScheme newURIScheme(String schemeOrURI, boolean checkForScheme ) throws URIException |
| { |
| IURIScheme newScheme = null; |
| |
| if( schemeOrURI == null ) |
| { |
| throw new URIException( |
| new Status( IStatus.ERROR, "id", 0, |
| NLS.bind( Messages.MSG_NULL_ARG_SPECIFIED, "newURIScheme"), null ) ); |
| } |
| |
| int colon = schemeOrURI.indexOf(':'); |
| int slash = schemeOrURI.indexOf('/'); |
| |
| // A protocol was specified. Note: a colon appearing after a path is not |
| // considered part of the protocol for this IURI. |
| if( ( checkForScheme && colon == -1 ) || |
| ( colon != -1 && slash == -1) || |
| ( colon != -1 && colon < slash ) ) |
| { |
| // If colon is -1 then we will treat the entire input parameter as the protocol. |
| if( colon == -1 ) colon = schemeOrURI.length(); |
| |
| String protocol = schemeOrURI.substring(0, colon ); |
| newScheme = (IURIScheme)schemes_.get( protocol ); |
| |
| if( newScheme == null ) |
| { |
| throw new URIException( |
| new Status( IStatus.ERROR, "id", 0, |
| NLS.bind( Messages.MSG_SCHEME_NOT_FOUND, schemeOrURI ), null ) ); |
| |
| } |
| } |
| else if( schemeOrURI.startsWith( "/") ) |
| { |
| throw new URIException( |
| new Status( IStatus.ERROR, "id", 0, |
| NLS.bind( Messages.MSG_ABSOLUTE_PATH_WITHOUT_SCHEME, schemeOrURI ), null ) ); |
| |
| } |
| else |
| { |
| newScheme = new RelativeScheme(); |
| } |
| |
| return newScheme; |
| } |
| } |