gecko-dev/xpcom/ds/nsStaticNameTable.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License (the "GPL"), in which case the
* provisions of the GPL are applicable instead of those above.
* If you wish to allow use of your version of this file only
* under the terms of the GPL and not to allow others to use your
* version of this file under the NPL, indicate your decision by
* deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete
* the provisions above, a recipient may use your version of this
* file under either the NPL or the GPL.
*/
/* Classes to manage lookup of static names in a table. */
#ifndef nsStaticNameTable_h___
#define nsStaticNameTable_h___
#include "nsHashtable.h"
/* This class supports case insensitve lookup.
*
* It differs from atom tables:
* - It supports case insensitive lookup.
* - It has minimal footprint by not copying the string table.
* - It does no locking.
* - It returns zero based indexes and const nsCSring& as required by its
* callers in the parser.
* - It is not an xpcom interface - meant for fast lookup in static tables.
*
* ***REQUIREMENTS***
* - It *requires* that all entries in the table be lowewcase only.
* - It *requires* that the table of strings be in memory that lives at least
* as long as this table object - typically a static string array.
*/
class NS_COM nsStaticCaseInsensitiveNameTable
{
public:
enum { NOT_FOUND = -1 };
PRBool Init(const char* Names[], PRInt32 Count);
PRInt32 Lookup(const nsCString& aName);
PRInt32 Lookup(const nsString& aName);
const nsCString& GetStringValue(PRInt32 index);
PRBool IsNullString(const nsCString& s) {return s == mNullStr;}
nsStaticCaseInsensitiveNameTable();
~nsStaticCaseInsensitiveNameTable();
private:
nsCString* mNameArray;
nsHashtable* mNameTable;
PRInt32 mCount;
nsCString mNullStr;
};
#endif /* nsStaticNameTable_h___ */