ipc/ipcd/shared/src/ipcStringList.h

   1 /* ***** BEGIN LICENSE BLOCK *****
   2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   3  *
   4  * The contents of this file are subject to the Mozilla Public License Version
   5  * 1.1 (the "License"); you may not use this file except in compliance with
   6  * the License. You may obtain a copy of the License at
   7  * http://www.mozilla.org/MPL/
   8  *
   9  * Software distributed under the License is distributed on an "AS IS" basis,
  10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  11  * for the specific language governing rights and limitations under the
  12  * License.
  13  *
  14  * The Original Code is Mozilla IPC.
  15  *
  16  * The Initial Developer of the Original Code is
  17  * Netscape Communications Corporation.
  18  * Portions created by the Initial Developer are Copyright (C) 2002
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Darin Fisher <darin@netscape.com>
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
  26  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  27  * in which case the provisions of the GPL or the LGPL are applicable instead
  28  * of those above. If you wish to allow use of your version of this file only
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  33  * the provisions above, a recipient may use your version of this file under
  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 #ifndef ipcStringList_h__
  39 #define ipcStringList_h__
  40
  41 #include <string.h>
  42 #include "plstr.h"
  43 #include "nscore.h"
  44 #include "ipcList.h"
  45
  46 //-----------------------------------------------------------------------------
  47 // string node
  48 //-----------------------------------------------------------------------------
  49
  50 class ipcStringNode
  51 {
  52 public:
  53     ipcStringNode() {}
  54
  55     const char *Value() const { return mData; }
  56
  57     PRBool Equals(const char *val) const { return strcmp(mData, val) == 0; }
  58     PRBool EqualsIgnoreCase(const char *val) const { return PL_strcasecmp(mData, val) == 0; }
  59
  60     class ipcStringNode *mNext;
  61 private:
  62     void *operator new(size_t size, const char *str) CPP_THROW_NEW;
  63
  64     // this is actually bigger
  65     char mData[1];
  66
  67     friend class ipcStringList;
  68 };
  69
  70 //-----------------------------------------------------------------------------
  71 // singly-linked list of strings
  72 //-----------------------------------------------------------------------------
  73
  74 class ipcStringList : public ipcList<ipcStringNode>
  75 {
  76 public:
  77     typedef ipcList<ipcStringNode> Super;
  78
  79     void Prepend(const char *str)
  80     {
  81         Super::Prepend(new (str) ipcStringNode());
  82     }
  83
  84     void Append(const char *str)
  85     {
  86         Super::Append(new (str) ipcStringNode());
  87     }
  88
  89     const ipcStringNode *Find(const char *str) const
  90     {
  91         return FindNode(mHead, str);
  92     }
  93
  94     void FindAndDelete(const char *str)
  95     {
  96         ipcStringNode *node = FindNodeBefore(mHead, str);
  97         if (node)
  98             DeleteAfter(node);
  99         else
 100             DeleteFirst();
 101     }
 102
 103 private:
 104     static NS_HIDDEN_(ipcStringNode *) FindNode      (ipcStringNode *head, const char *str);
 105     static NS_HIDDEN_(ipcStringNode *) FindNodeBefore(ipcStringNode *head, const char *str);
 106 };
 107
 108 #endif // !ipcStringList_h__