update rest

grapher is still broken

refactored io / error handling a bit

1 files changed, 23 insertions, 4 deletions

diff --git a/common/rawaccel-error.hpp b/common/rawaccel-error.hpp
index cdbe1e5..a9cb7b8 100644
--- a/common/rawaccel-error.hpp
+++ b/common/rawaccel-error.hpp
@@ -1,11 +1,12 @@
 #pragma once
 
-#include <stdexcept>
+#include <system_error>
+#include <string>
 
 namespace rawaccel {
 
-	class error : public std::runtime_error { 
-		using std::runtime_error::runtime_error; 
+	class error : public std::runtime_error {
+		using std::runtime_error::runtime_error;
 	};
 
 	class io_error : public error {
@@ -14,7 +15,25 @@ namespace rawaccel {
 
 	class install_error : public io_error {
 	public:
-		install_error() : io_error("Raw Accel driver is not installed, run installer.exe") {}
+		install_error() :
+			io_error("Raw Accel is not installed, run installer.exe") {}
+	};
+
+	class sys_error : public io_error {
+	public:
+		sys_error(const char* msg, DWORD code = GetLastError()) :
+			io_error(build_msg(code, msg)) {}
+
+		static std::string build_msg(DWORD code, const char* msg) 
+		{
+			std::string ret = 
+				std::system_error(code, std::system_category(), msg).what();
+			ret += " (";
+			ret += std::to_string(code);
+			ret += ")";
+			return ret;
+		}
+
 	};
 
 }