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// -*- C++ -*-
// Copyright (C) 2005-2015 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the terms
// of the GNU General Public License as published by the Free Software
// Foundation; either version 3, or (at your option) any later
// version.
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied
// warranty.
/**
* @file text_populate.hpp
* Contains a function for populating a vector with text words from
* a file.
*/
#ifndef PB_DS_TEXT_POPULATE_HPP
#define PB_DS_TEXT_POPULATE_HPP
#include <io/illegal_input_error.hpp>
#include <set>
#include <fstream>
#include <string>
#include <iostream>
namespace __gnu_pbds
{
namespace test
{
template<typename Vec>
void
text_populate(const std::string& r_f_name, Vec& r_a_txt)
{
const size_t size = r_a_txt.size();
try
{
std::ifstream f(r_f_name.c_str());
if (!f.good())
{
std::cerr << "Cannot open file " << r_f_name.c_str() <<
std::endl;
throw __gnu_pbds::test::illegal_input_error();
}
size_t i = 0;
while (f.good()&& i < size)
{
f >> r_a_txt[i].first;
r_a_txt[i].second = 0;
++i;
}
if (i < size)
{
std::cerr << "Read only " << static_cast<unsigned long>(i) <<
" words" << std::endl;
throw __gnu_pbds::test::illegal_input_error();
}
}
catch(...)
{
std::cerr << "Error reading from file" << std::endl;
throw;
}
}
template<typename Vec>
void
distinct_text_populate(const std::string& r_f_name, Vec& r_a_txt)
{
const size_t size = r_a_txt.size();
try
{
std::ifstream f(r_f_name.c_str());
if (!f.good())
{
std::cerr << "Cannot open file " << r_f_name.c_str() <<
std::endl;
throw __gnu_pbds::test::illegal_input_error();
}
typedef std::set< typename Vec::value_type::first_type> set_t;
set_t s;
while (f.good()&& s.size() < size)
{
typename Vec::value_type::first_type v;
f >> v;
if (s.find(v) == s.end())
{
r_a_txt[s.size()] = std::make_pair(v, 0);
s.insert(v);
}
}
if (s.size() < size)
{
std::cerr << "Read only " << static_cast<unsigned long>(s.size()) <<
" words" << std::endl;
throw __gnu_pbds::test::illegal_input_error();
}
}
catch(...)
{
std::cerr << "Error reading from file" << std::endl;
throw;
}
}
} // namespace test
} // namespace __gnu_pbds
#endif // #ifndef PB_DS_TEXT_POPULATE_HPP
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