1 files changed, 74 insertions, 0 deletions
diff --git a/src/command/Request.hxx b/src/command/Request.hxx
new file mode 100644
index 000000000..1616b7045
--- /dev/null
+++ b/src/command/Request.hxx
@@ -0,0 +1,74 @@
+/*
+ * 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