fatal.h

crack modeling with xfem

/* 2008 (c) Dorival M. Pedroso */

#ifndef MPM_EXCEPTION_H
#define MPM_EXCEPTION_H

// STL
#include <iostream> // for std::cout
#include <string>   // for std::string
#include <cstdarg>  // for va_list, va_start, va_end

class Fatal
{
public:
	// Constructor
	Fatal (std::string const & Fmt, ...);

	// Methods
	void Cout () const { std::cout << "" << "Fatal: " << _msg << "" << std::endl; }

private:
	// Data
	std::string _msg;

	// Private
	int _set_msg (char const * Fmt, va_list ArgList);
};


/////////////////////////////////////////////////////////////////////////////////////////// Implementation /////


/* Constructor */

inline Fatal::Fatal(std::string const & Fmt, ...)
{
	va_list   arg_list;
	va_start (arg_list, Fmt);
	_set_msg (Fmt.c_str(), arg_list);
	va_end   (arg_list);
}


/* Private */

inline int Fatal::_set_msg(char const * Fmt, va_list ArgList)
{
	const int size = 4048; // TODO: remove this limitation by using a loop and reallocating space
	char      buffer[size];
	int       len = std::vsnprintf(buffer, size, Fmt, ArgList);
	_msg.clear();
	if (len<0) _msg.append("String::_set_msg: INTERNAL ERROR: std::vsnprintf FAILED");
	else
	{
		buffer[len]='\0';
		if (len>size) _msg.append("String::_set_msg: INTERNAL ERROR: std::vsnprintf MESSAGE TRUNCATED: ");
		_msg.append(buffer);
	}
	return len;
}


#endif // MPM_EXCEPTION_H

/* 2008 (c) Dorival M. Pedroso */