src/kits/shared/NaturalCompare.cpp

   1 /*
   2  * Copyright 2009, Dana Burkart
   3  * Copyright 2009, Stephan Aßmus <superstippi@gmx.de>
   4  * Copyright 2010, Axel Dörfler, axeld@pinc-software.de
   5  * Copyright 2010, Rene Gollent (anevilyak@gmail.com)
   6  * Distributed under the terms of the MIT License.
   7  */
   8
   9
  10 #include <NaturalCompare.h>
  11
  12 #include <ctype.h>
  13 #include <string.h>
  14 #include <strings.h>
  15
  16 #include <Collator.h>
  17 #include <Locale.h>
  18
  19
  20 namespace BPrivate {
  21
  22
  23 // #pragma mark - Natural sorting
  24
  25
  26 //! Compares two strings naturally, as opposed to lexicographically
  27 int
  28 NaturalCompare(const char* stringA, const char* stringB)
  29 {
  30         static BCollator* collator = NULL;
  31
  32         if (collator == NULL)
  33         {
  34                 collator = new BCollator();
  35                 BLocale::Default()->GetCollator(collator);
  36                 collator->SetStrength(B_COLLATE_SECONDARY);
  37                 collator->SetNumericSorting(true);
  38         }
  39
  40         return collator->Compare(stringA, stringB);
  41 }
  42
  43
  44 } // namespace BPrivate