A set of classes used to simplify error handling with POSIX and UNIX functions in C++ programs. Header and `.cpp` files. Contains a class that works with `errno` errors, and one that works with `getaddrinfo` errors.

UNIXError.cpp

/* 
 * File:   UNIXError.cpp
 * Author: a
 * 
 * Created on March 19, 2012, 5:59 PM
 */

#include "UNIXError.h"
#include <netdb.h>

UNIXError::UNIXError() : runtime_error(strerror(errno))
{
  _error_num=errno;
}
UNIXError::UNIXError(int errno_c) : runtime_error(strerror(errno_c))
{
  _error_num=errno;
}
int UNIXError::getErrorNum()
{
    return _error_num;
}

UNIXError::UNIXError(const char* msg, int e): runtime_error(msg)
{
  _error_num=e;
}


GAIError::GAIError(int gai_eint) : UNIXError(gai_strerror(gai_eint), gai_eint)
{
}

UNIXError.h

/* 
 * File:   UNIXError.h
 * Author: a
 *
 * Created on March 19, 2012, 5:59 PM
 */

#ifndef UNIXERROR_H
#define	UNIXERROR_H
#include <errno.h>
#include <stdexcept>
#include <cstring>
using namespace std;

class UNIXError : public runtime_error {
public:
    UNIXError();
    explicit UNIXError(int errno_c);
    int getErrorNum();
protected:
    explicit UNIXError(const char* msg, int e);
    int _error_num;
};

class GAIError : public UNIXError {
public:
    GAIError(int gai_eint);
};

#endif	/* UNIXERROR_H */