Build liblouis_nacl using gyp.

third_party/liblouis/nacl_wrapper/liblouis_instance.h

+// Copyright 2013 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+#ifndef LIBLOUIS_NACL_LIBLOUIS_INSTANCE_H_
+#define LIBLOUIS_NACL_LIBLOUIS_INSTANCE_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "json/json.h"
+#include "liblouis_wrapper.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/cpp/completion_callback.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/message_loop.h"
+#include "ppapi/cpp/var.h"
+#include "ppapi/utility/completion_callback_factory.h"
+#include "ppapi/utility/threading/simple_thread.h"
+#include "translation_params.h"
+
+namespace liblouis_nacl {
+
+class LibLouisInstance : public pp::Instance {
+ public:
+  explicit LibLouisInstance(PP_Instance instance);
+  virtual ~LibLouisInstance();
+
+  virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]);
+  virtual void HandleMessage(const pp::Var& var_message);
+
+ private:
+  // Post work to the background (liblouis) thread.
+  int32_t PostWorkToBackground(const pp::CompletionCallback& callback) {
+    return liblouis_thread_.message_loop().PostWork(callback);
+  }
+
+  // Encodes a message as JSON and sends it over to JavaScript.
+  void PostReply(Json::Value reply, const std::string& in_reply_to);
+
+  // Posts an error response to JavaScript.
+  void PostError(const std::string& error);
+
+  // Posts an error response to JavaScript, with the message ID of the call
+  // which caused it.
+  void PostError(const std::string& error, const std::string& in_reply_to);
+
+  // Parses and executes a table check command.
+  void HandleCheckTable(const Json::Value& message,
+      const std::string& message_id);
+
+  // Called to check a table on a background thread.
+  void CheckTableInBackground(int32_t result, const std::string& table_name,
+      const std::string& message_id);
+
+  // Parses and executes a translation command.
+  void HandleTranslate(const Json::Value& message,
+      const std::string& message_id);
+
+  // Called to translate text on a background thread.
+  void TranslateInBackground(int32_t result, const TranslationParams& params,
+      const std::string& message_id);
+
+  // Parses and executes a back translation command.
+  void HandleBackTranslate(const Json::Value& message,
+      const std::string& message_id);
+
+  // Called to back-translate text on a background thread.
+  void BackTranslateInBackground(int32_t result,
+      const std::string& table_name, const std::vector<unsigned char>& cells,
+      const std::string& message_id);
+
+  LibLouisWrapper liblouis_;
+  pp::SimpleThread liblouis_thread_;
+  pp::CompletionCallbackFactory<LibLouisInstance> cc_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(LibLouisInstance);
+};
+
+}  // namespace liblouis_nacl
+
+#endif  // LIBLOUIS_NACL_LIBLOUIS_INSTANCE_H_