Removed dependency on Python for Weasel 0.9.

git-svn-id: https://rimeime.googlecode.com/svn/trunk/weasel@218 b90aed45-4297-9963-ff9d-98b604ac09a9

PyWeasel/PyWeasel.cpp

@@ -0,0 +1,133 @@
+#include "stdafx.h"
+#include <PyWeasel.h>
+
+PyWeaselHandler::PyWeaselHandler()
+{
+}
+
+PyWeaselHandler::~PyWeaselHandler()
+{
+}
+
+void PyWeaselHandler::Initialize()
+{
+	// 初始化Python解释器, 有必要在PyWeaselHandler创建之前调用
+	Py_Initialize();
+	try
+	{
+		python::object module = python::import("engine.weasel");
+		m_service = module.attr("service");
+	}
+	catch (python::error_already_set e)
+	{
+		python::handle_exception();
+	}
+
+	if (m_service.is_none())
+	{
+		throw std::exception("weasel service not found!");
+	}
+}
+
+void PyWeaselHandler::Finalize()
+{
+	try
+	{
+		m_service.attr("cleanup")();
+	}
+	catch (python::error_already_set e)
+	{
+	}
+	// Boost.Python doesn't support Py_Finalize yet, so don't call it!
+}
+
+UINT PyWeaselHandler::FindSession(UINT sessionID)
+{
+	bool found = false;
+	try
+	{
+		found = python::extract<bool>(m_service.attr("has_session")(sessionID));
+	}
+	catch (python::error_already_set e)
+	{
+		return 0;
+	}
+	return found ? sessionID : 0;
+}
+
+UINT PyWeaselHandler::AddSession(LPWSTR buffer)
+{
+	UINT id = 0;
+	try
+	{
+		id = python::extract<UINT>(m_service.attr("create_session")());
+		if (!id)
+		{
+			return 0;
+		}
+		python::object session = m_service.attr("get_session")(id);
+		if (session.is_none())
+		{
+			return 0;
+		}
+		wstring resp = python::extract<wstring>(session.attr("get_response")());
+		_Respond(buffer, resp);
+
+	}
+	catch (python::error_already_set e)
+	{
+		return 0;
+	}
+
+	return id;
+}
+
+UINT PyWeaselHandler::RemoveSession(UINT sessionID)
+{
+	bool done = false;
+	try
+	{
+		done = python::extract<bool>(m_service.attr("destroy_session")(sessionID));
+	}
+	catch (python::error_already_set e)
+	{
+		return 0;
+	}
+	return done ? sessionID : 0;
+}
+
+BOOL PyWeaselHandler::ProcessKeyEvent(weasel::KeyEvent keyEvent, UINT sessionID, LPWSTR buffer)
+{
+	bool taken = false;
+	try
+	{
+		python::object session = m_service.attr("get_session")(sessionID);
+		if (session.is_none())
+		{
+			return FALSE;
+		}
+
+		taken = python::extract<bool>(session.attr("process_key_event")(keyEvent.keycode, keyEvent.mask));
+		wstring resp = python::extract<wstring>(session.attr("get_response")());
+		_Respond(buffer, resp);
+	}
+	catch (python::error_already_set e)
+	{
+		return FALSE;
+	}
+
+	return (BOOL)taken;
+}
+
+bool PyWeaselHandler::_Respond(LPWSTR buffer, wstring const& msg)
+{
+	memset(buffer, 0, WEASEL_IPC_BUFFER_SIZE);
+	wbufferstream bs(buffer, WEASEL_IPC_BUFFER_LENGTH);
+	bs << msg;
+	if (!bs.good())
+	{
+		// response text toooo long!
+		return false;
+	}
+	return true;
+}