File indexing completed on 2024-04-14 05:38:47

 /*******************************************************************************
  * Copyright (C) 2008-2013 Konstantinos Smanis <konstantinos.smanis@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 3 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, see <http://www.gnu.org/licenses/>.              *
  *******************************************************************************/
 
 //Own
 #include "common.h"
 
 //Qt
 #include <QTextStream>
 
 //KDE
 #include <KProcess>
 #include <KShell>
 
 QString quoteWord(const QString &word)
 {
     return !word.startsWith(QLatin1Char('`')) || !word.endsWith(QLatin1Char('`')) ? KShell::quoteArg(word) : word;
 }
 QString unquoteWord(const QString &word)
 {
     if (word.isEmpty()) {
         return QString();
     }
 
     KProcess echo;
     echo.setShellCommand(QStringLiteral("echo -n %1").arg(word));
     echo.setOutputChannelMode(KProcess::OnlyStdoutChannel);
     if (echo.execute() == 0) {
         return QString::fromLocal8Bit(echo.readAllStandardOutput().constData());
     }
 
     QChar ch;
     QString quotedWord = word, unquotedWord;
     QTextStream stream(&quotedWord, QIODevice::ReadOnly | QIODevice::Text);
     while (!stream.atEnd()) {
         stream >> ch;
         if (ch == QLatin1Char('\'')) {
             Q_FOREVER {
                 if (stream.atEnd()) {
                     return QString();
                 }
                 stream >> ch;
                 if (ch == QLatin1Char('\'')) {
                     return unquotedWord;
                 } else {
                     unquotedWord.append(ch);
                 }
             }
         } else if (ch == QLatin1Char('"')) {
             Q_FOREVER {
                 if (stream.atEnd()) {
                     return QString();
                 }
                 stream >> ch;
                 if (ch == QLatin1Char('\\')) {
                     if (stream.atEnd()) {
                         return QString();
                     }
                     stream >> ch;
                     switch (ch.toLatin1()) {
                         case '$':
                         case '"':
                         case '\\':
                             unquotedWord.append(ch);
                             break;
                         case '\n':
                             unquotedWord.append(QLatin1Char(' '));
                             break;
                         default:
                             unquotedWord.append(QLatin1Char('\\')).append(ch);
                             break;
                     }
                 } else if (ch == QLatin1Char('"')) {
                     return unquotedWord;
                 } else {
                     unquotedWord.append(ch);
                 }
             }
         } else {
             Q_FOREVER {
                 if (ch == QLatin1Char('\\')) {
                     if (stream.atEnd()) {
                         return unquotedWord;
                     }
                     stream >> ch;
                     switch (ch.toLatin1()) {
                         case '\n':
                             break;
                         default:
                             unquotedWord.append(ch);
                             break;
                     }
                 } else if (ch.isSpace()) {
                     return unquotedWord;
                 } else {
                     unquotedWord.append(ch);
                 }
                 if (stream.atEnd()) {
                     return unquotedWord;
                 }
                 stream >> ch;
             }
         }
     }
     return QString();
 }