libstdc++-v3/testsuite/util/io/verified_cmd_line_input.cc

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2019 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 3, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20
  21 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  22
  23 // Permission to use, copy, modify, sell, and distribute this software
  24 // is hereby granted without fee, provided that the above copyright
  25 // notice appears in all copies, and that both that copyright notice
  26 // and this permission notice appear in supporting documentation. None
  27 // of the above authors, nor IBM Haifa Research Laboratories, make any
  28 // representation about the suitability of this software for any
  29 // purpose. It is provided "as is" without express or implied
  30 // warranty.
  31
  32 /**
  33  * @file verified_cmd_line_input.cpp
  34  * Contains definitions for tests - verified command line input.
  35  */
  36
  37 #include <util/io/verified_cmd_line_input.hpp>
  38 #include <limits.h>
  39 #include <utility>
  40 #include <stdlib.h>
  41 #include <bits/functexcept.h>
  42
  43 namespace __gnu_pbds
  44 {
  45   namespace test
  46   {
  47     void
  48     verify_argc(size_t given, size_t required)
  49     {
  50       if (given != required)
  51         __throw_illegal_input_error();
  52     }
  53
  54     void
  55     verify_prob(double prob)
  56     {
  57       if (prob < 0 || prob > 1)
  58         __throw_illegal_input_error();
  59     }
  60
  61     std::string
  62     get_cmd_line_str(int argc, char* a_p_argv[], int argn)
  63     {
  64       if (argc <= argn)
  65         __throw_illegal_input_error();
  66       const std::string ret(a_p_argv[argn]);
  67       return ret;
  68     }
  69
  70     double
  71     get_cmd_line_prob(int argc, char* a_p_argv[], int argn)
  72     {
  73       if (argc <= argn)
  74         __throw_illegal_input_error();
  75       const double ret = ::atof(a_p_argv[argn]);
  76       verify_prob(ret);
  77       return ret;
  78     }
  79
  80     size_t
  81     get_cmd_line_size(int argc, char* a_p_argv[], int argn)
  82     {
  83       if (argc <= argn)
  84         __throw_illegal_input_error();
  85       const size_t ret = static_cast<size_t>(::atoi(a_p_argv[argn]));
  86       return ret;
  87     }
  88
  89     bool
  90     get_cmd_line_bool(int argc, char* a_p_argv[], int argn)
  91     {
  92       if (argc <= argn)
  93         __throw_illegal_input_error();
  94
  95       const std::string opt(a_p_argv[argn]);
  96       if (opt.size() != 1)
  97         __throw_illegal_input_error();
  98       if (opt[0] == 't')
  99         return true;
 100       if (opt[0] == 'f')
 101         return false;
 102       __throw_illegal_input_error();
 103       return false;
 104     }
 105   } // namespace test
 106 } // namespace __gnu_pbds