*去掉文件前缀je_

1 files changed, 46 insertions, 0 deletions

diff --git a/src/libjin/common/exception.cpp b/src/libjin/common/exception.cpp
new file mode 100644
index 0000000..dc4e6ac
--- /dev/null
+++ b/src/libjin/common/exception.cpp
@@ -0,0 +1,46 @@
+#include <stdarg.h>
+
+#include "exception.h"
+
+namespace JinEngine
+{
+
+    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;
+        }
+        mMessage = std::string(buffer);
+        delete[] buffer;
+    }
+
+    Exception::~Exception() throw()
+    {
+    }
+
+} // namespace JinEngine
\ No newline at end of file