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
26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27  */
28 
29 #include <iostream>
30 #include <sstream>
31 
32 namespace cxxtools
33 {
48  template <typename inputIterator, typename separatorType, typename characterType>
49  void join(inputIterator b, inputIterator e, const separatorType& sep, std::basic_ostream<characterType>& out)
50  {
51  bool first = true;
52  for (inputIterator it = b; it != e; ++it)
53  {
54  if (first)
55  first = false;
56  else
57  out << sep;
58  out << *it;
59  }
60  }
61 
76  template <typename inputIterator, typename separatorType>
77  std::string join(inputIterator b, inputIterator e, const separatorType& sep)
78  {
79  std::ostringstream ret;
80  join(b, e, sep, ret);
81  return ret.str();
82  }
83 
84 }