File indexing completed on 2024-05-12 05:12:40

 /*
  * Copyright (C) 2014  Bhaskar Kandiyal <bkandiyal@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  */
 
 #include "commandshell.h"
 
 #include "commandfactory.h"
 #include "errorreporter.h"
 
 #include <kshell.h>
 
 #include <QTextStream>
 #include <QCoreApplication>
 #include <QTextCodec>
 
 DEFINE_COMMAND("shell", CommandShell, I18N_NOOP("Enter commands in an interactive shell"));
 
 bool CommandShell::sIsActive = false;
 
 CommandShell::CommandShell(QObject *parent)
     : AbstractCommand(parent)
 {
     mTextStream = new QTextStream(stdin);
     mTextStream->setCodec(QTextCodec::codecForLocale());
 }
 
 CommandShell::~CommandShell()
 {
     delete mTextStream;
 }
 
 void CommandShell::setupCommandOptions(QCommandLineParser *parser)
 {
 }
 
 int CommandShell::initCommand(QCommandLineParser *parser)
 {
     return (AbstractCommand::NoError);
 }
 
 void CommandShell::start()
 {
     sIsActive = true;
     while (enterCommandLoop()) {}
     sIsActive = false;
     QCoreApplication::quit();
 }
 
 bool CommandShell::enterCommandLoop()
 {
     const QString input = mTextStream->readLine();
     if (mTextStream->atEnd()) {
         return (false);
     }
 
     AbstractCommand *toInvoke = nullptr;
 
     KShell::Errors err;
     const QStringList args = KShell::splitArgs(input, KShell::AbortOnMeta, &err);
     if (err != KShell::NoError) {           // error splitting line
         ErrorReporter::error(i18nc("@info:shell", "Invalid command"));
     }                           // but continue command loop
     else if (!args.isEmpty()) {             // non-empty input line
         const QString cmd = args.first();       // look at command name
         if (cmd == "quit" || cmd == "exit") {       // exit shell on these
             return (false);
         }
 
         CommandFactory factory(&args);
         if (cmd == "help") return (true);       // handled above by CommandFactory
 
         toInvoke = factory.createCommand();
         if (toInvoke != nullptr) {
             connect(toInvoke, &AbstractCommand::error, this, &CommandShell::onCommandError);
             if (toInvoke->init(args) == AbstractCommand::NoError) {
                 QEventLoop loop;            // hopefully safe, because not a child of us
                 connect(toInvoke, &AbstractCommand::finished, &loop, &QEventLoop::quit);
                 QMetaObject::invokeMethod(toInvoke, "start", Qt::QueuedConnection);
                 loop.exec();
             }
 
             toInvoke->deleteLater();
         }
     }
 
     return (true);
 }
 
 void CommandShell::onCommandError(const QString &error)
 {
     ErrorReporter::error(error);
 }