join.h
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1 /*
2  * Copyright (C) 2010 Tommi Maekitalo
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * As a special exception, you may use this file as part of a free
10  * software library without restriction. Specifically, if other files
11  * instantiate templates or use macros or inline functions from this
12  * file, or you compile this file and link it with other files to
13  * produce an executable, this file does not by itself cause the
14  * resulting executable to be covered by the GNU General Public
15  * License. This exception does not however invalidate any other
16  * reasons why the executable file might be covered by the GNU Library
17  * General Public License.
18  *
19  * This library is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22  * Lesser General Public License for more details.
23  *
24  * You should have received a copy of the GNU Lesser General Public
25  * License along with this library; if not, write to the Free Software
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27  */
28 
29 #ifndef CXXTOOLS_JOIN_H
30 #define CXXTOOLS_JOIN_H
31 
32 #include <iostream>
33 #include <sstream>
34 
35 namespace cxxtools
36 {
51  template <typename inputIterator, typename separatorType, typename characterType>
52  void join(inputIterator b, inputIterator e, const separatorType& sep, std::basic_ostream<characterType>& out)
53  {
54  bool first = true;
55  for (inputIterator it = b; it != e; ++it)
56  {
57  if (first)
58  first = false;
59  else
60  out << sep;
61  out << *it;
62  }
63  }
64 
79  template <typename inputIterator, typename separatorType>
80  std::string join(inputIterator b, inputIterator e, const separatorType& sep)
81  {
82  std::ostringstream ret;
83  join(b, e, sep, ret);
84  return ret.str();
85  }
86 
87 }
88 
89 #endif