1 files changed, 99 insertions, 0 deletions
diff --git a/src/utils/naclmessages.cpp b/src/utils/naclmessages.cpp
new file mode 100644
index 000000000..1723f7180
--- /dev/null
+++ b/src/utils/naclmessages.cpp
@@ -0,0 +1,99 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2015  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  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
+ *  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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef __native_client__
+
+#include "utils/naclmessages.h"
+
+#include <ppapi_simple/ps.h>
+#include <ppapi_simple/ps_event.h>
+#include <ppapi/cpp/instance.h>
+#include <ppapi/cpp/var.h>
+
+#include <mutex>
+#include <condition_variable>
+
+#include "debug.h"
+
+struct NaclMessageHandle final
+{
+    bool handled;
+    std::string type;
+    std::string message;
+    std::condition_variable condv;
+};
+
+void naclPostMessage(const std::string &type,
+                     const std::string &message)
+{
+    pp::Var msgVar = pp::Var(std::string(type).append(":").append(message));
+    pp::Instance(PSGetInstanceId()).PostMessage(msgVar);
+}
+
+static void naclMessageHandlerFunc(struct PP_Var key,
+                                   struct PP_Var value,
+                                   void* user_data)
+{
+    NaclMessageHandle *handle = (NaclMessageHandle *)user_data;
+
+    if (key.type != PP_VARTYPE_STRING || value.type != PP_VARTYPE_STRING)
+        return;
+    if (pp::Var(key).AsString() != handle->type)
+        return;
+
+    handle->handled = true;
+    handle->message = pp::Var(value).AsString();
+
+    handle->condv.notify_one();
+}
+
+NaclMessageHandle *naclRegisterMessageHandler(const std::string &type)
+{
+    NaclMessageHandle *handle = new NaclMessageHandle;
+    handle->handled = false;
+    handle->type = type;
+
+    PSEventRegisterMessageHandler(type.c_str(),
+        naclMessageHandlerFunc,
+        (void *)handle);
+    return handle;
+}
+
+void naclUnregisterMessageHandler(NaclMessageHandle *handle)
+{
+    PSEventRegisterMessageHandler(handle->type.c_str(),
+        nullptr,
+        nullptr);
+    delete handle;
+}
+
+std::string naclWaitForMessage(NaclMessageHandle *handle)
+{
+    std::mutex mtx;
+    std::unique_lock <std::mutex> lck(mtx);
+
+    while (!handle->handled)
+        handle->condv.wait(lck);
+
+    handle->handled = false;
+    return handle->message;
+}
+
+#endif  // __native_client__