string_utils.hxx

   1 //  $Id: string_utils.hxx,v 1.2 2003/07/24 10:10:02 grumbel Exp $
   2 //
   3 //  Construo - A wire-frame construction gamee
   4 //  Copyright (C) 2002 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #ifndef HEADER_CONSTRUO_STRING_UTILS_HXX
  21 #define HEADER_CONSTRUO_STRING_UTILS_HXX
  22
  23 #include <string>
  24 #include <sstream>
  25
  26 namespace StringUtils
  27 {
  28   template <class T>
  29   std::string to_string (const T& any)
  30   {
  31     std::ostringstream oss;
  32     oss << any;
  33     return oss.str();
  34   }
  35
  36   /** Convert the contents in string \a rep to type \a T, if conversion
  37       fails false is returned and the value of \a x is unchanged, if
  38       true is returned the conversation was successfull. */
  39   template <class T>
  40   bool from_string(const std::string& rep, T& x)
  41   {
  42     // this is necessary so that if "x" is not modified if the conversion fails
  43     T temp;
  44     std::istringstream iss(rep);
  45     iss >> temp;
  46
  47     if (iss.fail())
  48       {
  49         return false;
  50       }
  51     else
  52       {
  53         x = temp;
  54         return true;
  55       }
  56   }
  57
  58   bool has_prefix (const std::string& str, const std::string& prefix);
  59   bool has_suffix (const std::string& str, const std::string& suffix);
  60 }
  61
  62 #endif
  63
  64 /* EOF */