106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
/* vim: set sw=4 sts=4 et foldmethod=syntax : */
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/*
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* Copyright (c) 2005, 2006, 2007, 2009 Ciaran McCreesh
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*
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* This file is part of the Paludis package manager. Paludis is free software;
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* you can redistribute it and/or modify it under the terms of the GNU General
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* Public License version 2, as published by the Free Software Foundation.
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*
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* Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PALUDIS_GUARD_PALUDIS_JOIN_HH
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#define PALUDIS_GUARD_PALUDIS_JOIN_HH 1
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#include <paludis/util/stringify.hh>
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#include <iterator>
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#include <string>
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/** \file
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* Declarations for the join function.
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*
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* \ingroup g_strings
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*
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* \section Examples
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*
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* - None at this time.
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*/
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namespace paludis
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{
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/**
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* Join together the items from i to end using joiner.
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*
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* \ingroup g_strings
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*/
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template <typename I_, typename T_>
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T_ join(I_ i, I_ end, const T_ & joiner)
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{
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T_ result;
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if (i != end)
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while (true)
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{
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result += stringify(*i);
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if (++i == end)
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break;
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result += joiner;
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}
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return result;
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}
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/**
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* Join together the items from i to end using joiner, using
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* a function other than stringify.
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*
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* \ingroup g_strings
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*/
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template <typename I_, typename T_, typename F_>
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T_ join(I_ i, I_ end, const T_ & joiner, const F_ & f)
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{
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T_ result;
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if (i != end)
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while (true)
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{
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result += (f)(*i);
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if (++i == end)
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break;
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result += joiner;
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}
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return result;
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}
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/**
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* Convenience alternative join allowing a char * to be used for a
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* string.
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*
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* \ingroup g_strings
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*/
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template <typename I_>
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std::string join(I_ begin, const I_ end, const char * const t)
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{
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return join(begin, end, std::string(t));
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}
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/**
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* Convenience alternative join allowing a char * to be used for a
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* string, using a function other than stringify.
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*
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* \ingroup g_strings
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*/
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template <typename I_, typename F_>
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std::string join(I_ begin, const I_ end, const char * const t, const F_ & f)
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{
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return join(begin, end, std::string(t), f);
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}
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}
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#endif
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