main.cpp Example File | Qt XML 5.6

Qt 5.6 | Qt XML | XML Stream Lint Example | main.cpp Example File

Qt 5.6.2 Reference Documentation

# main.cpp Example File

xmlstreamlint/main.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** You may use this file under the terms of the BSD license as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #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;
      }