*大小写

1 files changed, 47 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()
+	{
+	}
+
+}