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/*
* Copyright (C) 2003-2015 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_REQUEST_HXX
#define MPD_REQUEST_HXX
#include "check.h"
#include "protocol/ArgParser.hxx"
#include "util/ConstBuffer.hxx"
#include <utility>
#include <assert.h>
class Response;
class Request : public ConstBuffer<const char *> {
typedef ConstBuffer<const char *> Base;
public:
constexpr Request(const char *const*argv, size_type n)
:Base(argv, n) {}
constexpr const char *GetOptional(unsigned idx,
const char *default_value=nullptr) const {
return idx < size
? data[idx]
: default_value;
}
template<typename T, typename... Args>
bool Parse(unsigned idx, T &value_r, Response &r,
Args&&... args) {
assert(idx < size);
return ParseCommandArg(r, value_r, data[idx],
std::forward<Args>(args)...);
}
template<typename T, typename... Args>
bool ParseOptional(unsigned idx, T &value_r, Response &r,
Args&&... args) {
return idx >= size ||
Parse(idx, value_r, r,
std::forward<Args>(args)...);
}
template<typename T, typename... Args>
bool ParseShift(unsigned idx, T &value_r, Response &r,
Args&&... args) {
bool success = Parse(idx, value_r, r,
std::forward<Args>(args)...);
shift();
return success;
}
};
#endif
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