error.cc

网络流量采集及分析软件

/*!\file   Error.cc

    Copyright 2003-2004 Fraunhofer Institute for Open Communication Systems (FOKUS),
                        Berlin, Germany

    This file is part of Network Measurement and Accounting System (NETMATE).

    NETMATE is free software; you can redistribute it and/or modify 
    it under the terms of the GNU General Public License as published by 
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    NETMATE is distributed in the hope that it will be useful, 
    but WITHOUT ANY WARRANTY; without even the implied warranty of 
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this software; if not, write to the Free Software 
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Description:
    Error class used for exceptions
 
    $Id: Error.cc,v 1.1.1.1 2004/12/23 05:52:36 s_zander Exp $

*/

#include "Error.h"


const int ERROR_MSG_BUFSIZE = 8192;


/* ------------------------- Error ------------------------- */

Error::Error(const char *fmt, ...)
{
    va_list argp;
    char buf[ERROR_MSG_BUFSIZE];

    va_start(argp, fmt);

    if (vsprintf( buf, fmt, argp ) < 0) {
        throw (Error("error constructing error string"));
    }
    
    va_end(argp);

    error = buf;
    errorNo = 0;
}


Error::Error(const int error_no, const char *fmt, ...)
{
    va_list argp;
    char buf[ERROR_MSG_BUFSIZE];

    va_start(argp, fmt);

    if (vsprintf( buf, fmt, argp ) < 0) {
        throw (Error("error constructing error string"));
    }
    
    va_end(argp);

    error = buf;
    errorNo = error_no;
}


ostream& operator<<(ostream &os, Error &e)
{
    e.dump(os);
    return os;
}


void Error::dump( ostream &os )
{ 
    int e = getErrorNo();
    
    if (e) {
        os << e << ": " << getError();
    } else {
        os << getError();
    }
}