Add the SDL exception class.

src/CMakeLists.txt

@@ -358,6 +358,7 @@ endif()
 
 set(wesnoth-sdl_SRC
 	sdl/alpha.cpp
+	sdl/exception.cpp
 	sdl/texture.cpp
 	sdl/window.cpp
 )

src/SConscript

@@ -150,6 +150,7 @@ libcampaignd = env.Library("campaignd", libcampaignd_sources, OBJPREFIX = "campa
 libwesnoth_sdl_sources = Split("""
     sdl_utils.cpp
     sdl/alpha.cpp
+    sdl/exception.cpp
     sdl/texture.cpp
     sdl/window.cpp
     tracer.cpp

src/sdl/exception.cpp

@@ -0,0 +1,37 @@
+/*
+   Copyright (C) 2014 by Mark de Wever <koraq@xs4all.nl>
+   Part of the Battle for Wesnoth Project http://www.wesnoth.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.
+
+   See the COPYING file for more details.
+*/
+
+#include "sdl/exception.hpp"
+
+#include <SDL_error.h>
+
+namespace sdl
+{
+
+static std::string create_error(const std::string& operation,
+								const bool use_sdl_error)
+{
+	if(use_sdl_error) {
+		return operation + " Error »" + SDL_GetError() + "«.\n";
+	} else {
+		return operation;
+	}
+}
+
+texception::texception(const std::string& operation, const bool use_sdl_error)
+	: game::error(create_error(operation, use_sdl_error))
+{
+}
+
+} // namespace sdl

src/sdl/exception.hpp

@@ -0,0 +1,44 @@
+/*
+   Copyright (C) 2014 by Mark de Wever <koraq@xs4all.nl>
+   Part of the Battle for Wesnoth Project http://www.wesnoth.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.
+
+   See the COPYING file for more details.
+*/
+
+#ifndef SDL_EXCEPTION_HPP_INCLUDED
+#define SDL_EXCEPTION_HPP_INCLUDED
+
+/**
+ * @file
+ * Contains a basic exception class for SDL operations.
+ */
+
+#include "exceptions.hpp"
+
+namespace sdl
+{
+
+struct texception : public game::error
+{
+	/**
+	 * Constructor.
+	 *
+	 * @param operation           The operation that has failed.
+	 * @param use_sdl_error       If set to @c true the @p operation is
+	 *                            appended with the SDL error message. Else the
+	 *                            @p operation is the error message for the
+	 *                            exception.
+	 */
+	texception(const std::string& operation, const bool use_sdl_error);
+};
+
+} // namespace sdl
+
+#endif