source: trunk/yat/utility/OptionInFile.cc

Last change on this file was 2919, checked in by Peter, 9 years ago

update copyright years

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.5 KB
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1// $Id: OptionInFile.cc 2919 2012-12-19 06:54:23Z peter $
2
3/*
4  Copyright (C) 2008 Jari Häkkinen, Peter Johansson
5  Copyright (C) 2009, 2012 Peter Johansson
6
7  This file is part of the yat library, http://dev.thep.lu.se/yat
8
9  The yat library is free software; you can redistribute it and/or
10  modify it under the terms of the GNU General Public License as
11  published by the Free Software Foundation; either version 3 of the
12  License, or (at your option) any later version.
13
14  The yat library is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  General Public License for more details.
18
19  You should have received a copy of the GNU General Public License
20  along with yat. If not, see <http://www.gnu.org/licenses/>.
21*/
22
23#include <config.h>
24
25#include "OptionInFile.h"
26
27#include <cassert>
28#include <fstream>
29#include <iostream>
30#include <string>
31
32namespace theplu {
33namespace yat {
34namespace utility {
35
36
37  OptionInFile::OptionInFile(CommandLine& cmd, std::string flag, 
38                             std::string desc, bool required)
39    : OptionFile(cmd, flag, desc, required, true, "r"), is_(NULL) {}
40
41
42  OptionInFile::~OptionInFile(void)
43  {
44    if (is_) {
45      is_->close();
46      delete is_;
47    }
48  }
49
50
51  std::istream& OptionInFile::istream(void)
52  {
53    if (!present())
54      return std::cin;
55    if (!is_) {
56      assert(value().size());
57      is_ = new std::ifstream(value().c_str());
58      assert(is_->good());
59    }
60    return *is_;
61  }
62
63
64}}} // of namespace utility, yat, and theplu
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