source: trunk/yat/utility/OptionFile.cc @ 980

Last change on this file since 980 was 980, checked in by Peter, 14 years ago

adding possibility to make option required

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.2 KB
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1// $Id: OptionFile.cc 980 2007-10-22 00:55:19Z peter $
2
3/*
4  Copyright (C) 2007 Peter Johansson
5
6  This file is part of the yat library, http://trac.thep.lu.se/trac/yat
7
8  The yat library is free software; you can redistribute it and/or
9  modify it under the terms of the GNU General Public License as
10  published by the Free Software Foundation; either version 2 of the
11  License, or (at your option) any later version.
12
13  The yat library is distributed in the hope that it will be useful,
14  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  General Public License for more details.
17
18  You should have received a copy of the GNU General Public License
19  along with this program; if not, write to the Free Software
20  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
21  02111-1307, USA.
22*/
23
24#include "OptionFile.h"
25#include "FileUtil.h"
26
27#include <stdexcept>
28#include <string>
29
30namespace theplu {
31namespace yat {
32namespace utility {
33
34
35  OptionFile::OptionFile(CommandLine& cmd, std::string flag, std::string desc, 
36                         bool required, bool exist, std::string bits)
37    : OptionArg<std::string>(cmd, flag, desc, required), exist_(exist), 
38      bits_(bits) {}
39
40
41  void OptionFile::do_validate2() const
42  {   
43    if (!present())
44      return;
45    FileUtil fu(value().c_str());
46    if (exist_ && !fu.exists()){
47      std::stringstream ss;
48      ss << "cannot stat `" << value() << "': No such file or directory";
49      throw std::runtime_error(ss.str());
50    }
51    if (fu.permissions(bits_)) {
52      // Peter, this loop is stupid but I wanna differentiate the error message
53      for (std::string::const_iterator iter; iter!=bits_.end(); ++iter){
54        if (*iter=='r' && fu.permissions("r")){
55          std::stringstream ss;
56          ss << "cannot stat `" << value() << "': No such file or directory";
57          throw std::runtime_error(ss.str());
58        }
59        else if (*iter=='w' && fu.permissions("w")){
60          std::stringstream ss;
61          ss << "cannot create file `" << value() 
62             << "': Permission denied";
63          throw std::runtime_error(ss.str());
64        }
65      }
66      std::stringstream ss;
67      ss << value() << ": Permission denied";
68      throw std::runtime_error(ss.str());
69    }
70  }
71
72
73}}} // of namespace utility, yat, and theplu
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