xpcom/string/nsStringComparator.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include <ctype.h>
   8 #include "nsAString.h"
   9 #include "plstr.h"
  10
  11
  12 // define nsStringComparator
  13 #include "string-template-def-unichar.h"
  14 #include "nsTStringComparator.cpp"
  15 #include "string-template-undef.h"
  16
  17 // define nsCStringComparator
  18 #include "string-template-def-char.h"
  19 #include "nsTStringComparator.cpp"
  20 #include "string-template-undef.h"
  21
  22
  23 int
  24 nsCaseInsensitiveCStringComparator::operator()(const char_type* aLhs,
  25                                                const char_type* aRhs,
  26                                                uint32_t aLhsLength,
  27                                                uint32_t aRhsLength) const
  28 {
  29   if (aLhsLength != aRhsLength) {
  30     return (aLhsLength > aRhsLength) ? 1 : -1;
  31   }
  32   int32_t result = int32_t(PL_strncasecmp(aLhs, aRhs, aLhsLength));
  33   //Egads. PL_strncasecmp is returning *very* negative numbers.
  34   //Some folks expect -1,0,1, so let's temper its enthusiasm.
  35   if (result < 0) {
  36     result = -1;
  37   }
  38   return result;
  39 }