lib/libTrie/TrieCharTransform.h

   1 /*
   2  * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef   LIBTRIE_TRIECHARTRANSFORM_H
  10 #define   LIBTRIE_TRIECHARTRANSFORM_H
  11
  12 /* This is an internal header for libTrie.
  13  * libTrie provides both limited C and full C++
  14  * bindings.
  15  * libTrie itself is written in C++.
  16  * For C bindings see Trie.h
  17  */
  18
  19 /* C bindings */
  20 #ifndef   __cplusplus
  21
  22 /* C++ bindings */
  23 #else
  24 #include <sys/types.h>
  25 #include <utility>
  26 #include <ctype.h>
  27
  28 /* TODO: parameterize this to be more generic -
  29 * i.e. M-ary internal node sizes etc
  30 */
  31
  32 class TrieCharTransform
  33 {
  34
  35 public:
  36     virtual ~TrieCharTransform() {}
  37
  38     virtual char operator () (char const) const = 0;
  39 };
  40
  41 class TrieCaseless : public TrieCharTransform
  42 {
  43     virtual char operator () (char const aChar) const {return tolower(aChar);}
  44 };
  45
  46 #endif /* __cplusplus */
  47
  48 #endif /* LIBTRIE_TRIECHARTRANSFORM_H */
  49