/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * 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.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsIEntityConverter.h"
#include "nsIFactory.h"
#include "nsIStringBundle.h"
#include "nsCOMPtr.h"

nsresult NS_NewEntityConverter(nsISupports** oResult);

#define kVERSION_STRING_LEN 128

class nsEntityVersionList
{
public:
    nsEntityVersionList() : mEntities(NULL) {}
    
    PRUint32 mVersion;
    PRUnichar mEntityListName[kVERSION_STRING_LEN+1];
    nsCOMPtr<nsIStringBundle> mEntities;
};

class nsEntityConverter: public nsIEntityConverter
{
public:
	
	//
	// implementation methods
	//
	nsEntityConverter();
	virtual ~nsEntityConverter();

	//
	// nsISupports
	//
	NS_DECL_ISUPPORTS

	//
	// nsIEntityConverter
	//
	NS_IMETHOD ConvertUTF32ToEntity(PRUint32 character, PRUint32 entityVersion, char **_retval);
	NS_IMETHOD ConvertToEntity(PRUnichar character, PRUint32 entityVersion, char **_retval);

	NS_IMETHOD ConvertToEntities(const PRUnichar *inString, PRUint32 entityVersion, PRUnichar **_retval);

protected:

  // load a version property file and generate a version list (number/name pair)
  NS_IMETHOD LoadVersionPropertyFile();

  // map version number to version string
  const PRUnichar* GetVersionName(PRUint32 versionNumber);

  // map version number to a string bundle
  nsIStringBundle* GetVersionBundleInstance(PRUint32 versionNumber);

  // load a string bundle file
  already_AddRefed<nsIStringBundle> LoadEntityBundle(PRUint32 version);


  nsEntityVersionList *mVersionList;            // array of version number/name pairs
  PRUint32 mVersionListLength;                  // number of supported versions
};
