lib/libTrie/Trie.cc

   1 /*
   2  * Copyright (c) 2002,2003 Robert Collins <rbtcollins@hotmail.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  17  *
  18  */
  19
  20 #include "squid.h"
  21 #include "Trie.h"
  22 #include "TrieCharTransform.h"
  23 #include "TrieNode.h"
  24
  25 #if HAVE_UNISTD_H
  26 #include <unistd.h>
  27 #endif
  28
  29 Trie::Trie(TrieCharTransform *aTransform) : head(0) , transform(aTransform)
  30 {}
  31
  32 Trie::~Trie()
  33 {
  34     delete head;
  35     delete transform;
  36 }
  37
  38 bool
  39 Trie::add(char const *aString, size_t theLength, void *privatedata)
  40 {
  41     if (!privatedata)
  42         return false;
  43
  44     if (head) {
  45         if (find(aString, theLength))
  46             return false;
  47
  48         return head->add(aString, theLength, privatedata, transform);
  49     }
  50
  51     head = new TrieNode;
  52
  53     return head->add(aString, theLength, privatedata, transform);
  54 }