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main.cpp Example File
xml/xmlstreamlint/main.cpp

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 ** This file is part of the examples of the Qt Toolkit.
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 #include <QCoreApplication>
 #include <QFile>
 #include <QStringList>
 #include <QTextStream>
 #include <QXmlStreamReader>

 /*
  This class exists for the sole purpose of creating a translation context.
 */
 class XmlStreamLint
 {
 public:
     Q_DECLARE_TR_FUNCTIONS(XmlStreamLint)
 };

 int main(int argc, char *argv[])
 {
     enum ExitCode
     {
         Success,
         ParseFailure,
         ArgumentError,
         WriteError,
         FileFailure
     };

     QCoreApplication app(argc, argv);

     QTextStream errorStream(stderr);

     if (argc != 2)
     {
         errorStream << XmlStreamLint::tr(
                        "Usage: xmlstreamlint <path to XML file>\n");
         return ArgumentError;
     }

     QString inputFilePath(QCoreApplication::arguments().at(1));
     QFile inputFile(inputFilePath);

     if (!QFile::exists(inputFilePath))
     {
         errorStream << XmlStreamLint::tr(
                        "File %1 does not exist.\n").arg(inputFilePath);
         return FileFailure;

     } else if (!inputFile.open(QIODevice::ReadOnly)) {
         errorStream << XmlStreamLint::tr(
                        "Failed to open file %1.\n").arg(inputFilePath);
         return FileFailure;
     }

     QFile outputFile;
     if (!outputFile.open(stdout, QIODevice::WriteOnly))
     {
         errorStream << XmlStreamLint::tr("Failed to open stdout.");
         return WriteError;
     }

     QXmlStreamReader reader(&inputFile);
     QXmlStreamWriter writer(&outputFile);

     while (!reader.atEnd())
     {
         reader.readNext();

         if (reader.error())
         {
             errorStream << XmlStreamLint::tr(
                            "Error: %1 in file %2 at line %3, column %4.\n").arg(
                                reader.errorString(), inputFilePath,
                                QString::number(reader.lineNumber()),
                                QString::number(reader.columnNumber()));
             return ParseFailure;

         } else
             writer.writeCurrentToken(reader);
     }

     return Success;
 }