113 lines
3.7 KiB
C++
113 lines
3.7 KiB
C++
/***************************************************************************
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* Copyright (C) 2008-2014 by Andrzej Rybczak *
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* electricityispower@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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***************************************************************************/
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#ifndef NCMPCPP_HAVE_FORMAT_H
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#define NCMPCPP_HAVE_FORMAT_H
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#include <boost/variant.hpp>
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#include "menu.h"
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#include "song.h"
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namespace Format {
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namespace Flags {
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const unsigned None = 0;
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const unsigned Color = 1;
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const unsigned Format = 2;
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const unsigned OutputSwitch = 4;
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const unsigned Tag = 8;
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const unsigned All = Color | Format | OutputSwitch | Tag;
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}
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enum class ListType { Group, FirstOf, AST };
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template <ListType, typename> struct List;
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template <typename CharT> using Group = List<ListType::Group, CharT>;
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template <typename CharT> using FirstOf = List<ListType::FirstOf, CharT>;
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template <typename CharT> using AST = List<ListType::AST, CharT>;
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struct OutputSwitch { };
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struct SongTag
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{
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SongTag(MPD::Song::GetFunction function_, unsigned delimiter_ = 0)
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: m_function(function_), m_delimiter(delimiter_)
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{ }
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MPD::Song::GetFunction function() const { return m_function; }
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unsigned delimiter() const { return m_delimiter; }
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private:
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MPD::Song::GetFunction m_function;
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unsigned m_delimiter;
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};
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enum class Result { Empty, Missing, Ok };
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template <typename CharT>
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using Expression = boost::variant<
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std::basic_string<CharT>,
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NC::Color,
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NC::Format,
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OutputSwitch,
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SongTag,
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boost::recursive_wrapper<FirstOf<CharT>>,
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boost::recursive_wrapper<Group<CharT>>
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>;
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template <ListType Type, typename CharT>
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struct List
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{
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typedef std::vector<Expression<CharT>> Base;
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List() { }
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List(Base &&base_)
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: m_base(std::move(base_))
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{ }
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Base &base() { return m_base; }
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const Base &base() const { return m_base; }
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private:
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Base m_base;
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};
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template <typename CharT, typename VisitorT>
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void visit(VisitorT &visitor, const AST<CharT> &ast);
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template <typename CharT, typename ItemT>
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void print(const AST<CharT> &ast, NC::Menu<ItemT> &menu, const MPD::Song *song,
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NC::BasicBuffer<CharT> *buffer, const unsigned flags = Flags::All);
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template <typename CharT>
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void print(const AST<CharT> &ast, NC::BasicBuffer<CharT> &buffer,
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const MPD::Song *song, const unsigned flags = Flags::All);
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template <typename CharT>
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std::basic_string<CharT> stringify(const AST<CharT> &ast, const MPD::Song *song);
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AST<char> parse(const std::string &s, const unsigned flags = Flags::All);
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AST<wchar_t> parse(const std::wstring &ws, const unsigned flags = Flags::All);
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}
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#endif // NCMPCPP_HAVE_FORMAT_H
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