Add method argument to SystemException

Utils/Exception.cc

@@ -27,14 +27,24 @@
 
 // Custom includes
 #include <cstring>
+#include <sstream>
 
 #define prefix_
 ///////////////////////////////cc.p////////////////////////////////////////
 
+prefix_ void satcom::lib::SystemException::init()
+{
+    std::stringstream s;
+    if (where)
+        s << where << ": ";
+    s << "(" << err << ") " << std::strerror(err);
+    buffer_ = s.str();
+}
+
 prefix_ char const * satcom::lib::SystemException::what()
     const throw()
 {
-    return std::strerror(this->err);
+    return buffer_.c_str();
 }
 
 ///////////////////////////////cc.e////////////////////////////////////////

Utils/Exception.hh

@@ -25,6 +25,7 @@
 
 // Custom includes
 #include <exception>
+#include <string>
 
 //#include "Exception.mpp"
 ///////////////////////////////hh.p////////////////////////////////////////
@@ -34,9 +35,18 @@ namespace lib {
 
     struct SystemException : public std::exception
     {
-        SystemException(int err_) : err(err_) {};
+        explicit SystemException(int err_) : where(0), err(err_) { init(); }
+        SystemException(char const * where_, int err_) : where(where_), err(err_) { init(); }
+
         virtual char const * what() const throw();
+
+        char const * where;
         int err;
+
+        virtual ~SystemException() throw() {}
+    private:
+        void init();
+	std::string buffer_;
     };
     
 }}