xpcom/string/src/nsStringComparator.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   3 /* ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
  10  *
  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
  14  * License.
  15  *
  16  * The Original Code is Mozilla.
  17  *
  18  * The Initial Developer of the Original Code is IBM Corporation.
  19  * Portions created by IBM Corporation are Copyright (C) 2003
  20  * IBM Corporation. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Darin Fisher <darin@meer.net>
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
  27  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
  30  * under the terms of either the GPL or the LGPL, and not to allow others to
  31  * use your version of this file under the terms of the MPL, indicate your
  32  * decision by deleting the provisions above and replace them with the notice
  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #include <ctype.h>
  40 #include "nsAString.h"
  41 #include "plstr.h"
  42
  43
  44   // define nsStringComparator
  45 #include "string-template-def-unichar.h"
  46 #include "nsTStringComparator.cpp"
  47 #include "string-template-undef.h"
  48
  49   // define nsCStringComparator
  50 #include "string-template-def-char.h"
  51 #include "nsTStringComparator.cpp"
  52 #include "string-template-undef.h"
  53
  54
  55 int
  56 nsCaseInsensitiveCStringComparator::operator()( const char_type* lhs, const char_type* rhs, PRUint32 aLength ) const
  57   {
  58     PRInt32 result=PRInt32(PL_strncasecmp(lhs, rhs, aLength));
  59     //Egads. PL_strncasecmp is returning *very* negative numbers.
  60     //Some folks expect -1,0,1, so let's temper its enthusiasm.
  61     if (result<0)
  62       result=-1;
  63     return result;
  64   }
  65
  66 int
  67 nsCaseInsensitiveCStringComparator::operator()( char lhs, char rhs ) const
  68   {
  69     if (lhs == rhs) return 0;
  70
  71     lhs = tolower(lhs);
  72     rhs = tolower(rhs);
  73
  74     return lhs - rhs;
  75   }