/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
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 * Version 1.1 (the "License"); you may not use this file except in
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 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or 
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * ***** END LICENSE BLOCK ***** */

/*
 * There is a 1-to-many relationship between MIME-types and file extensions
 * I.e. there can be many file extensions that have the same mime type.
 */

#ifndef ___nsXMLMIMEDataSource__h___
#define ___nsXMLMIMEDataSource__h___

#include "nsIMIMEDataSource.h"
#include "nsCOMPtr.h"
#include "nsIURI.h"
#include "nsHashtable.h"
#include "nsISupportsArray.h"
#include "nsIFile.h"
class nsIFile;

class nsXMLMIMEDataSource : public nsIMIMEDataSource {

    NS_DECL_ISUPPORTS
    NS_DECL_NSIMIMEDATASOURCE

    // nsMIMEService methods
    nsXMLMIMEDataSource();
    virtual ~nsXMLMIMEDataSource();
    nsresult Init();
    static NS_METHOD Create(nsISupports* aOuter, const nsIID& aIID, void* *aResult);

private:
	nsresult AddMapping(const char* mimeType, 
                          const char* extension,
                          const char* description,
                          nsIURI* dataURI, PRUint32 type=PRUint32(0x3F3F3F3F), PRUint32 creator=PRUint32(0x3F3F3F3F));
	nsresult AppendExtension(const char* mimeType, const char* extension);
	nsresult RemoveExtension(const char* aExtension);

    nsresult InitFromURI(nsIURI *aUri);
    nsresult InitFromHack();

    nsCOMPtr<nsIFile>						mFile; // File to load the datasource from
    nsHashtable                 *mInfoObjects; // used for fast access and
                                               // multi index lookups
		
		nsHashtable									mMacCache; // Cache for lookup of file creator types
						
    nsCOMPtr<nsISupportsArray>   mInfoArray;   // used for enumeration
};

#endif // ___nsXMLMIMEDataSource__h___
