/* ***** 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 the Mozilla OS/2 libraries.
 *
 * The Initial Developer of the Original Code is
 * John Fairhurst, <john_fairhurst@iname.com>.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * 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 ***** */
#ifndef _nscollationos2_h_
#define _nscollationos2_h_


#include "nsICollation.h"
#include "nsCollation.h"  // static library
#include "nsCRT.h"



class nsCollationOS2 : public nsICollation {

protected:
  nsCollation   *mCollation;
  nsString      mLocale;
  nsString      mSavedLocale;

public:
  NS_DECL_ISUPPORTS

  // compare two strings
  // result is same as strcmp
  NS_IMETHOD CompareString(const nsCollationStrength strength, 
                           const nsAString& string1, const nsAString& string2, PRInt32* result);

  // allocate sort key from input string
  // returns newly allocated key and its byte length
  NS_IMETHOD AllocateRawSortKey(const nsCollationStrength strength, 
                                const nsAString& stringIn, PRUint8** key, PRUint32 *outLen);

  // compare two sort keys
  // length is character length not byte length, result is same as strcmp
  NS_IMETHOD CompareRawSortKey(const PRUint8* key1, const PRUint32 len1, 
                               const PRUint8* key2, const PRUint32 len2, 
                               PRInt32* result) 
                               {*result = nsCRT::strcmp((PRUnichar *)key1, (PRUnichar *)key2); return NS_OK;}
   
  // init this interface to a specified locale (should only be called by collation factory)
  //
  NS_IMETHOD Initialize(nsILocale* locale);

  nsCollationOS2();

  virtual ~nsCollationOS2();
};

#endif /* nsCollationOS2_h__ */ 
