From 8b00d67febf133e89f6a0bfabc41feed555dc4a9 Mon Sep 17 00:00:00 2001 From: chai Date: Sat, 12 Jan 2019 21:48:33 +0800 Subject: =?UTF-8?q?*=E5=8E=BB=E6=8E=89=E6=96=87=E4=BB=B6=E5=89=8D=E7=BC=80?= =?UTF-8?q?je=5F?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/libjin/common/exception.cpp | 46 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 src/libjin/common/exception.cpp (limited to 'src/libjin/common/exception.cpp') 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 + +#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 -- cgit v1.1-26-g67d0