*大小写

2 files changed, 90 insertions, 0 deletions

diff --git a/Source/Asura.Engine/exceptions/exception.cpp b/Source/Asura.Engine/exceptions/exception.cpp
new file mode 100644
index 0000000..dbb36ca
--- /dev/null
+++ b/Source/Asura.Engine/exceptions/exception.cpp
@@ -0,0 +1,47 @@
+#include "Exception.h"
+
+#include <cstdarg>
+#include <iostream>
+
+namespace AsuraEngine
+{
+
+	Exception::Exception(const char *fmt, ...)
+	{
+		va_list args;
+		int size_buffer = 256, size_out;
+		char *buffer;
+		while (true)
+		{
+			buffer = new char[size_buffer];
+			memset(buffer, 0, size_buffer);
+
+			va_start(args, fmt);
+			size_out = vsnprintf(buffer, size_buffer, fmt, args);
+			va_end(args);
+
+			// see http://perfec.to/vsnprintf/pasprintf.c
+			// if size_out ...
+			//      == -1             --> output was truncated
+			//      == size_buffer    --> output was truncated
+			//      == size_buffer-1  --> ambiguous, /may/ have been truncated
+			//       > size_buffer    --> output was truncated, and size_out
+			//                            bytes would have been written
+			if (size_out == size_buffer || size_out == -1 || size_out == size_buffer - 1)
+				size_buffer *= 2;
+			else if (size_out > size_buffer)
+				size_buffer = size_out + 2; // to avoid the ambiguous case
+			else
+				break;
+
+			delete[] buffer;
+		}
+		message = std::string(buffer);
+		delete[] buffer;
+	}
+
+	Exception::~Exception() throw()
+	{
+	}
+
+}
diff --git a/Source/Asura.Engine/exceptions/exception.h b/Source/Asura.Engine/exceptions/exception.h
new file mode 100644
index 0000000..bed8a9a
--- /dev/null
+++ b/Source/Asura.Engine/exceptions/exception.h
@@ -0,0 +1,43 @@
+#ifndef __ASURA_ENGINE_EXCEPTION_H__
+#define __ASURA_ENGINE_EXCEPTION_H__
+
+#include <exception>
+
+namespace AsuraEngine
+{
+	
+	/**
+	* A convenient vararg-enabled exception class.
+	**/
+	class Exception : public std::exception
+	{
+	public:
+
+		/**
+		* Creates a new Exception according to printf-rules.
+		*
+		* See: http://www.cplusplus.com/reference/clibrary/cstdio/printf/
+		*
+		* @param fmt The format string (see printf).
+		**/
+		Exception(const char *fmt, ...);
+		virtual ~Exception() throw();
+
+		/**
+		* Returns a string containing reason for the exception.
+		* @return A description of the exception.
+		**/
+		inline virtual const char *what() const throw()
+		{
+			return message.c_str();
+		}
+
+	private:
+
+		std::string message;
+
+	}; // Exception
+
+}
+
+#endif
\ No newline at end of file