Xml.cpp

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/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#include "Logger.h"
#include <QFileDevice>
#include <QMessageBox>
#include <QObject>
#include "QtToString.h"
#include "Xml.h"
 
QXmlStreamReader::TokenType loadNextFromReader (QXmlStreamReader &reader)
{
  QXmlStreamReader::TokenType tokenType = reader.readNext();
 
  qCDebug(ENGAUGE_LOG) << "loadNextFromReader "
                               << " tokenType=" << QXmlStreamReaderTokenTypeToString (tokenType).toLatin1().data()
                               << " tag=" << reader.name().toLatin1().data();
 
  return tokenType;
}
 
void xmlExitWithError (QXmlStreamReader &reader,
                           const QString &message)
{
  // Try to extract as much useful context as possible
  QString context;
  QFileDevice *fileDevice = dynamic_cast<QFileDevice*> (reader.device());
  if (fileDevice == nullptr) {
 
    context = QString ("%1 %2: ")
              .arg (QObject::tr ("Start at line"))
              .arg (reader.lineNumber());
 
  } else {
 
    context = QString ("%1 %2 %3 %4: ")
              .arg (QObject::tr ("File"))
              .arg (fileDevice->fileName())
              .arg (QObject::tr ("at line"))
              .arg (reader.lineNumber());
 
  }
 
  // Context plus original message gets displayed
  QString adornedMsg = QString ("%1%2. %3")
                       .arg (context)
                       .arg (message)
                       .arg (QObject::tr ("Quitting"));
 
  QMessageBox::critical (nullptr,
                         QObject::tr ("Error reading xml"),
                         adornedMsg);
 
  qCCritical(ENGAUGE_LOG) << "xmlExitWithError error='" << adornedMsg.toLatin1().data() << "'";
 
  exit (-1);
}