source: trunk/yat/utility/utility.h @ 1005

Last change on this file since 1005 was 1005, checked in by Peter, 14 years ago

adding conversion function - from string to numerical type

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.3 KB
Line 
1#ifndef _theplu_yat_utility_utility_
2#define _theplu_yat_utility_utility_
3
4// $Id: utility.h 1005 2008-01-24 16:26:08Z peter $
5
6/*
7  Copyright (C) 2005 Jari Häkkinen, Markus Ringnér, Peter Johansson
8  Copyright (C) 2006 Jari Häkkinen
9  Copyright (C) 2007 Peter Johansson
10
11  This file is part of the yat library, http://trac.thep.lu.se/yat
12
13  The yat library is free software; you can redistribute it and/or
14  modify it under the terms of the GNU General Public License as
15  published by the Free Software Foundation; either version 2 of the
16  License, or (at your option) any later version.
17
18  The yat library is distributed in the hope that it will be useful,
19  but WITHOUT ANY WARRANTY; without even the implied warranty of
20  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21  General Public License for more details.
22
23  You should have received a copy of the GNU General Public License
24  along with this program; if not, write to the Free Software
25  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26  02111-1307, USA.
27*/
28
29///
30/// @file utility/utility.h
31///
32/// @brief Some useful functions are placed here
33///
34
35#include <string>
36#include <stdexcept>
37#include <sstream>
38#include <utility>
39#include <vector>
40
41namespace theplu {
42namespace yat {
43namespace utility {
44
45  class vector;
46
47  /**
48     \brief convert string to (numerical) type
49
50     \throw runtime_error if conversion fails
51   */
52  template<typename T>
53  T convert(const std::string& s)
54  {
55    std::stringstream ss(s);
56    T a;
57    ss >> a;
58    bool ok = true;
59    if(ss.fail()) 
60      ok = false;
61    // Check that nothing is left on stream
62    std::string b;
63    ss >> b;
64    if (!b.empty() || !ok)
65      throw std::runtime_error(std::string("convert(\"")+s+std::string("\")"));
66    return a;
67  }
68
69  ///
70  /// @return true if string is a double
71  ///
72  bool is_double(const std::string&);
73
74  /**
75     @return true if string \a s fulfills regular expression \verbatim
76     ^\w* \endverbatim \a other \verbatim \w*$ \endverbatim (case
77     insensitive)
78  */
79  bool is_equal(std::string s, std::string other);
80
81  ///
82  /// @return true if string is a float
83  ///
84  bool is_float(const std::string&);
85
86  ///
87  /// @return true if string is an int
88  ///
89  bool is_int(const std::string&);
90
91  ///
92  /// @return true if string is "nan" (case-insensitive)
93  ///
94  bool is_nan(const std::string& s);
95
96}}} // of namespace utility, yat, and theplu
97
98#endif
Note: See TracBrowser for help on using the repository browser.