RerrMsg.cpp

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// $Id: RerrMsg.cpp 1186 2019-07-12 17:49:59Z mueller $
// SPDX-License-Identifier: GPL-3.0-or-later
// Copyright 2011-2018 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
// 
// Revision History: 
// Date         Rev Version  Comment
// 2018-12-21  1090   1.2.1  use constructor delegation
// 2013-01-12   474   1.2    add meth+text and meth+text+errnum ctors
// 2011-02-06   359   1.1    use references in interface, fix printf usage
// 2011-01-15   356   1.0    Initial version
// ---------------------------------------------------------------------------
 
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
 
#include "RerrMsg.hpp"
 
using namespace std;
 
// all method definitions in namespace Retro
namespace Retro {
 
//------------------------------------------+-----------------------------------
 
RerrMsg::RerrMsg()
  : fMeth(),
    fText()
{}
 
//------------------------------------------+-----------------------------------
 
RerrMsg::RerrMsg(const RerrMsg& rhs)
  : RerrMsg(rhs.fMeth, rhs.fText)
{}
 
//------------------------------------------+-----------------------------------
 
RerrMsg::RerrMsg(const std::string& meth, const std::string& text)
  : fMeth(meth),
    fText(text)
{}
 
//------------------------------------------+-----------------------------------
 
RerrMsg::RerrMsg(const std::string& meth, const std::string& text, int errnum)
  : RerrMsg(meth, text)
{
  AppendErrno(errnum);
}
 
//------------------------------------------+-----------------------------------
 
RerrMsg::~RerrMsg()
{}
 
//------------------------------------------+-----------------------------------
 
void RerrMsg::Init(const std::string& meth, const std::string& text)
{
  fMeth = meth;
  fText = text;
  return;
}
 
//------------------------------------------+-----------------------------------
 
void RerrMsg::InitErrno(const std::string& meth,
                        const std::string& text, int errnum)
{
  fMeth = meth;
  fText = text;
  AppendErrno(errnum);
  return;
}
 
//------------------------------------------+-----------------------------------
 
void RerrMsg::InitPrintf(const std::string& meth, const char* format, ...)
{
  fMeth = meth;
 
  char buf[1024];
  buf[0] = 0;
  
  va_list ap;
  va_start (ap, format);
  vsnprintf (buf, sizeof(buf), format, ap);
  va_end (ap);
 
  fText = buf;
 
  return;
}
 
//------------------------------------------+-----------------------------------
 
void RerrMsg::Prepend(const std::string& meth)
{
  fMeth = meth + "->" + fMeth;
  return;
}
 
//------------------------------------------+-----------------------------------
 
void RerrMsg::Append(const std::string& text)
{
  fText += text;
  return;
}
 
//------------------------------------------+-----------------------------------
 
void RerrMsg::AppendErrno(int errnum)
{
  fText += strerror(errnum);
  return;
}
 
//------------------------------------------+-----------------------------------
 
void RerrMsg::AppendPrintf(const char* format, ...)
{
  char buf[1024];
  buf[0] = 0;
  
  va_list ap;
  va_start (ap, format);
  vsnprintf (buf, sizeof(buf), format, ap);
  va_end (ap);
 
  fText += buf;
 
  return;
}
 
//------------------------------------------+-----------------------------------
 
std::string RerrMsg::Message() const
{
  return fMeth + ": " + fText;
}
 
//------------------------------------------+-----------------------------------
 
void RerrMsg::Swap(RerrMsg& rhs)
{
  fMeth.swap(rhs.fMeth);
  fText.swap(rhs.fText);
  return;
}
 
//------------------------------------------+-----------------------------------
 
RerrMsg& RerrMsg::operator=(const RerrMsg& rhs)
{
  if (&rhs == this) return *this;
  fMeth = rhs.fMeth;
  fText = rhs.fText;
  return *this;  
}
 
} // end namespace Retro