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source: code/branches/network3/src/asylum/util/String2Number.h @ 1338

Last change on this file since 1338 was 1064, checked in by rgrieder, 17 years ago
  • replaced all String2Number with ConvertValue
  • replaced all tokenize with SubString
  • dealt with warnings under msvc
  • removed some warnings by placing casts
  • bugfix in audio: local variable pushed into member variable std::vector
  • updated StableHeaders.h
File size: 2.2 KB
Line 
1/*
2 *   ORXONOX - the hottest 3D action shooter ever to exist
3 *                    > www.orxonox.net <
4 *
5 *
6 *   License notice:
7 *
8 *   This program is free software; you can redistribute it and/or
9 *   modify it under the terms of the GNU General Public License
10 *   as published by the Free Software Foundation; either version 2
11 *   of the License, or (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 *
22 *   Author:
23 *      Nicolas Perrenoud <nicolape_at_ee.ethz.ch>
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29#ifndef _String2Number_H__
30#define _String2Number_H__
31
32#include "UtilPrereqs.h"
33
34#include <string>
35#include <sstream>
36#include <iostream>
37
38#include "core/Debug.h"
39
40/**
41 * String to number conversion
42 *
43 * This class converts a number inside a std::string
44 * into a numeric type number (int,float,double)
45 * Number in string can be decimal, hexadecimal or octal
46 *
47 * @author Nicolas Perrenoud<nicolape_at_ee.ethz.ch>
48 *
49 * @example
50 * float f;
51 * String2Number<float>(f, std::string(" 123.45 "));
52 */
53
54template <class T>
55class String2Number
56{
57  private:
58  bool success_;
59
60  public:
61  /**
62   * Constructor
63   *
64   * First value is the target variable, the second vector is the
65   * string where the number is taken from, the third parameter
66   * should be one of std::hex, std::dec or std::oct (dec is default value)
67   */
68  inline String2Number(T& t, const std::string& s, std::ios_base& (*f)(std::ios_base&) =  std::dec, int haltOnError=1)
69  {
70    std::istringstream iss(s);
71    success_ = !(iss >> f >> t).fail();
72
73    if (!success_ && haltOnError==1)
74    {
75      COUT(1) << "Error: Conversion from string to number in \"" << s << "\" failed." << std::endl;
76      exit(1);
77    }
78  }
79};
80
81#endif /* _String2Number_H__ */
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