client/*: rename source files, remove "Client" prefix

src/client/Idle.cxx

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2003-2018 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.
+ */
+
+#include "Internal.hxx"
+#include "Response.hxx"
+#include "Idle.hxx"
+
+#include <assert.h>
+
+static void
+WriteIdleResponse(Response &r, unsigned flags) noexcept
+{
+	const char *const*idle_names = idle_get_names();
+	for (unsigned i = 0; idle_names[i]; ++i) {
+		if (flags & (1 << i))
+			r.Format("changed: %s\n", idle_names[i]);
+	}
+
+	r.Write("OK\n");
+}
+
+void
+Client::IdleNotify() noexcept
+{
+	assert(idle_waiting);
+	assert(idle_flags != 0);
+
+	unsigned flags = std::exchange(idle_flags, 0) & idle_subscriptions;
+	idle_waiting = false;
+
+	Response r(*this, 0);
+	WriteIdleResponse(r, flags);
+
+	timeout_event.Schedule(client_timeout);
+}
+
+void
+Client::IdleAdd(unsigned flags) noexcept
+{
+	if (IsExpired())
+		return;
+
+	idle_flags |= flags;
+	if (idle_waiting && (idle_flags & idle_subscriptions))
+		IdleNotify();
+}
+
+bool
+Client::IdleWait(unsigned flags) noexcept
+{
+	assert(!idle_waiting);
+
+	idle_waiting = true;
+	idle_subscriptions = flags;
+
+	if (idle_flags & idle_subscriptions) {
+		IdleNotify();
+		return true;
+	} else {
+		/* disable timeouts while in "idle" */
+		timeout_event.Cancel();
+		return false;
+	}
+}