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131 lines (104 loc) · 4.17 KB
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/***************************************************************************
* Copyright (C) 2008-2021 by Andrzej Rybczak *
* andrzej@rybczak.net *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef NCMPCPP_HAVE_FORMAT_H
#define NCMPCPP_HAVE_FORMAT_H
#include <boost/variant.hpp>
#include "curses/menu.h"
#include "song.h"
namespace Format {
namespace Flags {
const unsigned None = 0;
const unsigned Color = 1;
const unsigned Format = 2;
const unsigned OutputSwitch = 4;
const unsigned Tag = 8;
const unsigned All = Color | Format | OutputSwitch | Tag;
}
enum class ListType { Group, FirstOf, AST };
template <ListType, typename> struct List;
template <typename CharT> using Group = List<ListType::Group, CharT>;
template <typename CharT> using FirstOf = List<ListType::FirstOf, CharT>;
template <typename CharT> using AST = List<ListType::AST, CharT>;
struct OutputSwitch { };
struct SongTag
{
SongTag(MPD::Song::GetFunction function_, unsigned delimiter_ = 0)
: m_function(function_), m_delimiter(delimiter_)
{ }
MPD::Song::GetFunction function() const { return m_function; }
unsigned delimiter() const { return m_delimiter; }
private:
MPD::Song::GetFunction m_function;
unsigned m_delimiter;
};
inline bool operator==(const SongTag &lhs, const SongTag &rhs) {
return lhs.function() == rhs.function()
&& lhs.delimiter() == rhs.delimiter();
}
inline bool operator!=(const SongTag &lhs, const SongTag &rhs) {
return !(lhs == rhs);
}
template <typename CharT>
using TagVector = std::vector<
std::pair<
boost::optional<SongTag>,
std::basic_string<CharT>
>
>;
enum class Result { Empty, Missing, Ok };
template <typename CharT>
using Expression = boost::variant<
std::basic_string<CharT>,
NC::Color,
NC::Format,
OutputSwitch,
SongTag,
boost::recursive_wrapper<FirstOf<CharT>>,
boost::recursive_wrapper<Group<CharT>>
>;
template <ListType Type, typename CharT>
struct List
{
typedef std::vector<Expression<CharT>> Base;
List() { }
List(Base &&base_)
: m_base(std::move(base_))
{ }
Base &base() { return m_base; }
const Base &base() const { return m_base; }
private:
Base m_base;
};
template <typename CharT, typename VisitorT>
void visit(VisitorT &visitor, const AST<CharT> &ast);
template <typename CharT, typename ItemT>
void print(const AST<CharT> &ast, NC::Menu<ItemT> &menu, const MPD::Song *song,
NC::BasicBuffer<CharT> *buffer, const unsigned flags = Flags::All);
template <typename CharT>
void print(const AST<CharT> &ast, NC::BasicBuffer<CharT> &buffer,
const MPD::Song *song, const unsigned flags = Flags::All);
template <typename CharT>
std::basic_string<CharT> stringify(const AST<CharT> &ast, const MPD::Song *song);
template <typename CharT>
TagVector<CharT> flatten(const AST<CharT> &ast, const MPD::Song &song);
AST<char> parse(const std::string &s, const unsigned flags = Flags::All);
AST<wchar_t> parse(const std::wstring &ws, const unsigned flags = Flags::All);
}
#endif // NCMPCPP_HAVE_FORMAT_H