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random_string_generator.hh

00001 /*
00002 *  Name:      random_string_generator.hh
00003 *  Author:    Rafael Jesus Alcantara Perez
00004 *  Summary:   Random string generator class
00005 *  Date:      $Date: 2003/04/14 00:18:35 $
00006 *  Revision:  $Revision: 1.1 $
00007 *
00008 *  Copyright (C) 1994-2002  Rafael Jesus Alcantara Perez <rafa@dedalo-ing.com>
00009 *
00010 *  This program is free software; you can redistribute it and/or modify
00011 *  it under the terms of the GNU General Public License as published by
00012 *  the Free Software Foundation; either version 2 of the License, or
00013 *  (at your option) any later version.
00014 *
00015 *  This program is distributed in the hope that it will be useful,
00016 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00017 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018 *  GNU General Public License for more details.
00019 *
00020 *  You should have received a copy of the GNU General Public License
00021 *  along with this program; if not, write to the Free Software
00022 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
00023 *  MA 02111-1307, USA.
00024 */
00025 
00026 #ifndef _MPCL_UTIL_STRATEGY_RANDOM_STRING_GENERATOR__
00027 #define _MPCL_UTIL_STRATEGY_RANDOM_STRING_GENERATOR__
00028 
00029 #include "general-functions.hh"
00030 #include "../../text/string.hh"
00031 
00032 
00034 namespace mpcl
00035 {
00036 
00038   namespace util
00039   {
00040 
00042     namespace strategy
00043     {
00044 
00049       class TRandomStringGenerator
00050       {
00051 
00052         private:
00053 
00055           const TString   kyAlphabet;
00056 
00058           const TString::size_type   kzMaxAlphabetIndex;
00059 
00060 
00061         public:
00062 
00063           //
00064           //  C O N S T R U C T O R S
00065           //
00066 
00070           TRandomStringGenerator (const char* pkcALPHABET) :
00071             kyAlphabet         (pkcALPHABET)               ,
00072             kzMaxAlphabetIndex (kyAlphabet.size() - 1)     {}
00073 
00080           TString execute (const TString::size_type& kzSIZE)
00081           {
00082             MRandomNumberGenerator<TString::size_type>   mRandomNumberGenerator;
00083             TString                                      yResult;
00084 
00085             for (TString::size_type I = 0; ( I < kzSIZE ) ;++I)
00086             {
00087               yResult.append (1, kyAlphabet [mRandomNumberGenerator (kzMaxAlphabetIndex)]);
00088             }
00089             return yResult;
00090           }
00091 
00092       };  // class TRandomStringGenerator
00093 
00094     }  // namespace strategy
00095 
00096   }  // namespace util
00097 
00098 }  // namespace mpcl
00099 
00100 
00101 #endif  // not _MPCL_UTIL_STRATEGY_RANDOM_STRING_GENERATOR__

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