include/wvhash.h

   1 /* -*- Mode: C++ -*-
   2  * Worldvisions Weaver Software:
   3  *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
   4  *
   5  * Common hash functions for use with wvscatterhash.h and wvhashtable.h.
   6  */
   7 #ifndef __WVHASH_H
   8 #define __WVHASH_H
   9
  10 #include "wvstring.h"
  11
  12 // predefined hashing functions (note: string hashes are case-insensitive)
  13 unsigned WvHash(WvStringParm s);
  14 unsigned WvHash(const char *s);
  15 unsigned WvHash(const int &i);
  16 unsigned WvHash(const void *p);
  17
  18
  19 // Default comparison function used by WvHashTable
  20 template <class K>
  21 struct OpEqComp
  22 {
  23     static bool compare(const K *key1, const K *key2)
  24         { return *key1 == *key2; }
  25 };
  26
  27
  28 // Case-insensitive comparison function for WvHashTable
  29 template <class K>
  30 struct StrCaseComp
  31 {
  32     static bool compare(const K *key1, const K *key2)
  33         { return strcasecmp(*key1, *key2) == 0; }
  34 };
  35
  36 #endif // __WVHASH_H