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/*******************************************************************************
* 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.
*
*/
public class SimpleURIFactory implements IURIFactory
{
private Hashtable schemes_ = new Hashtable();
/**
* Creates and returns a new IURI for the given string.
*/
public IURI newURI(String uri) throws URIException
{
IURIScheme scheme = newURIScheme( uri, false );
return scheme.newURI( uri );
}
/**
* Creates and returns a new IURI for the given URL.
*/
public IURI newURI(URL url) throws URIException
{
IURIScheme scheme = newURIScheme( url.toString(), false );
return scheme.newURI( url );
}
/**
* 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.
*/
public IURIScheme newURIScheme(String schemeOrURI) throws URIException
{
return newURIScheme( schemeOrURI, true );
}
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;
}
}
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