2012-03-27 23:13:14 +00:00
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// -*- C++ -*-
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2019-06-02 15:48:37 +00:00
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// Copyright (C) 2005-2019 Free Software Foundation, Inc.
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2012-03-27 23:13:14 +00:00
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Permission to use, copy, modify, sell, and distribute this software
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// is hereby granted without fee, provided that the above copyright
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// notice appears in all copies, and that both that copyright notice
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// and this permission notice appear in supporting documentation. None
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// representation about the suitability of this software for any
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// purpose. It is provided "as is" without express or implied
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// warranty.
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/**
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* @file text_populate.hpp
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* Contains a function for populating a vector with text words from
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* a file.
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*/
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#ifndef PB_DS_TEXT_POPULATE_HPP
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#define PB_DS_TEXT_POPULATE_HPP
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#include <io/illegal_input_error.hpp>
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#include <set>
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#include <fstream>
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#include <string>
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#include <iostream>
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namespace __gnu_pbds
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{
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namespace test
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{
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template<typename Vec>
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void
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text_populate(const std::string& r_f_name, Vec& r_a_txt)
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{
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const size_t size = r_a_txt.size();
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try
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{
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std::ifstream f(r_f_name.c_str());
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if (!f.good())
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{
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std::cerr << "Cannot open file " << r_f_name.c_str() <<
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std::endl;
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throw __gnu_pbds::test::illegal_input_error();
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}
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size_t i = 0;
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while (f.good()&& i < size)
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{
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f >> r_a_txt[i].first;
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r_a_txt[i].second = 0;
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++i;
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}
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if (i < size)
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{
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std::cerr << "Read only " << static_cast<unsigned long>(i) <<
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" words" << std::endl;
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throw __gnu_pbds::test::illegal_input_error();
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}
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}
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catch(...)
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{
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std::cerr << "Error reading from file" << std::endl;
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throw;
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}
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}
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template<typename Vec>
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void
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distinct_text_populate(const std::string& r_f_name, Vec& r_a_txt)
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{
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const size_t size = r_a_txt.size();
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try
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{
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std::ifstream f(r_f_name.c_str());
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if (!f.good())
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{
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std::cerr << "Cannot open file " << r_f_name.c_str() <<
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std::endl;
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throw __gnu_pbds::test::illegal_input_error();
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}
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typedef std::set< typename Vec::value_type::first_type> set_t;
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set_t s;
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while (f.good()&& s.size() < size)
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{
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typename Vec::value_type::first_type v;
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f >> v;
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if (s.find(v) == s.end())
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{
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r_a_txt[s.size()] = std::make_pair(v, 0);
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s.insert(v);
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}
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}
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if (s.size() < size)
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{
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std::cerr << "Read only " << static_cast<unsigned long>(s.size()) <<
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" words" << std::endl;
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throw __gnu_pbds::test::illegal_input_error();
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}
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}
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catch(...)
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{
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std::cerr << "Error reading from file" << std::endl;
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throw;
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}
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}
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} // namespace test
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} // namespace __gnu_pbds
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#endif // #ifndef PB_DS_TEXT_POPULATE_HPP
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