From 281f8feabffd69928a0a0f08aa31f70b36f5e6bd Mon Sep 17 00:00:00 2001 From: chai Date: Sat, 3 Nov 2018 21:11:41 +0800 Subject: =?UTF-8?q?*=E5=A2=9E=E5=8A=A0=E6=B8=B8=E6=88=8F=E7=9B=AE=E5=BD=95?= =?UTF-8?q?=E9=80=89=E6=8B=A9?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/libjin/Common/je_exception.cpp | 46 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) (limited to 'src/libjin/Common/je_exception.cpp') diff --git a/src/libjin/Common/je_exception.cpp b/src/libjin/Common/je_exception.cpp index e69de29..5489a42 100644 --- a/src/libjin/Common/je_exception.cpp +++ b/src/libjin/Common/je_exception.cpp @@ -0,0 +1,46 @@ +#include + +#include "je_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 -- cgit v1.1-26-g67d0