commandline.cpp

//------------------------------------------------------------------------------
// commandline.cpp
//------------------------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
// 02110-1301  USA
//
//------------------------------------------------------------------------------
// Copyright (C) 2012 "Zalewa" <zalewapl@gmail.com>
//------------------------------------------------------------------------------
#include "commandline.h"

#include "apprunner.h"
#include "strings.hpp"
#include <QRegularExpression>

void CommandLine::escapeArgs(QStringList &args)
{
        QStringList::iterator it;
        for (it = args.begin(); it != args.end(); ++it)
        {
                QString &str = *it;
                escapeArg(str);
        }
}

static bool needsQuoteWrap(const QString &arg)
{
        if (arg.isEmpty())
                return true;
        const auto reallySafestCharsIHope = QRegularExpression("[^a-z0-9/\\\\_\\-+]", QRegularExpression::CaseInsensitiveOption);
        return arg.contains(reallySafestCharsIHope);
}

#if defined Q_OS_WIN
void CommandLine::escapeArg(QString &arg)
{
        // Note: this may be game specific (oh, dear...)
        arg.replace('"', "\\\"");
        if (needsQuoteWrap(arg))
        {
                arg.prepend('"');
                arg += '"';
        }
}

#else
// Since most other operating systems are Unix like we might as well make this a default.
void CommandLine::escapeArg(QString &arg)
{
        arg.replace('\'', "'\\''"); // This does: ' -> '\''
        if (needsQuoteWrap(arg))
        {
                arg.prepend('\'');
                arg += '\'';
        }
}
#endif

void CommandLine::escapeExecutable(QString &arg)
{
        #ifdef Q_OS_DARWIN
        QFileInfo binary = arg;
        if (binary.isBundle())
                arg += AppRunner::findBundleBinary(binary);
        #endif
        return escapeArg(arg);
}