src/Logger_p.h

   1 /*
   2  * This file is part of the vng project
   3  * Copyright (C) 2008 Thomas Zander <tzander@trolltech.com>
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef LOGGER_P_H
  20 #define LOGGER_P_H
  21
  22 #include "Logger.h"
  23 #include <QProcess>
  24 #include <QThreadStorage>
  25
  26 class NullDevice : public QIODevice
  27 {
  28 public:
  29     virtual qint64 readData (char *data, qint64 maxlen) {
  30         Q_UNUSED(data);
  31         Q_UNUSED(maxlen);
  32         return 0;
  33     }
  34     virtual qint64 writeData (const char *data, qint64 len) {
  35         Q_UNUSED(data);
  36         return len;
  37     }
  38 };
  39
  40 class LoggerPrivate : QObject
  41 {
  42     Q_OBJECT
  43 public:
  44     LoggerPrivate();
  45     ~LoggerPrivate();
  46
  47     void insertPager();
  48     void removePager();
  49     bool startPager(const QString &program, const QStringList &arguments = QStringList());
  50
  51     QTextStream & standardOut() {
  52         if (! standardOutStream.hasLocalData()) {
  53             QTextStream *out = new QTextStream(stdout);
  54             standardOutStream.setLocalData(out);
  55         }
  56         return *(standardOutStream.localData());
  57     }
  58
  59     Logger::Verbosity verbosity;
  60     QTextStream dummy;
  61     QTextStream *pagerStream;
  62     QProcess *pager;
  63     bool colorPager;
  64     QThreadStorage<QTextStream*> standardOutStream;
  65
  66 private slots:
  67     void pagerFinished();
  68 };
  69
  70 #endif