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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Copyright (C) 2014 Petroules Corporation.
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Build Suite.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "shellutils.h"
#include <QRegExp>
namespace qbs {
namespace Internal {
// hasSpecialChars, shellQuoteUnix, shellQuoteWin: all from qtbase/qmake/library/ioutils.cpp
inline static bool hasSpecialChars(const QString &arg, const uchar (&iqm)[16])
{
for (int x = arg.length() - 1; x >= 0; --x) {
ushort c = arg.unicode()[x].unicode();
if ((c < sizeof(iqm) * 8) && (iqm[c / 8] & (1 << (c & 7))))
return true;
}
return false;
}
QString shellQuoteUnix(const QString &arg)
{
// Chars that should be quoted (TM). This includes:
static const uchar iqm[] = {
0xff, 0xff, 0xff, 0xff, 0xdf, 0x07, 0x00, 0xd8,
0x00, 0x00, 0x00, 0x38, 0x01, 0x00, 0x00, 0x78
}; // 0-32 \'"$`<>|;&(){}*?#!~[]
if (!arg.length())
return QString::fromLatin1("\"\"");
QString ret(arg);
if (hasSpecialChars(ret, iqm)) {
ret.replace(QLatin1Char('\''), QLatin1String("'\\''"));
ret.prepend(QLatin1Char('\''));
ret.append(QLatin1Char('\''));
}
return ret;
}
QString shellQuoteWin(const QString &arg)
{
// Chars that should be quoted (TM). This includes:
// - control chars & space
// - the shell meta chars "&()<>^|
// - the potential separators ,;=
static const uchar iqm[] = {
0xff, 0xff, 0xff, 0xff, 0x45, 0x13, 0x00, 0x78,
0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x10
};
if (!arg.length())
return QString::fromLatin1("\"\"");
QString ret(arg);
if (hasSpecialChars(ret, iqm)) {
// Quotes are escaped and their preceding backslashes are doubled.
// It's impossible to escape anything inside a quoted string on cmd
// level, so the outer quoting must be "suspended".
ret.replace(QRegExp(QLatin1String("(\\\\*)\"")), QLatin1String("\"\\1\\1\\^\"\""));
// The argument must not end with a \ since this would be interpreted
// as escaping the quote -- rather put the \ behind the quote: e.g.
// rather use "foo"\ than "foo\"
int i = ret.length();
while (i > 0 && ret.at(i - 1) == QLatin1Char('\\'))
--i;
ret.insert(i, QLatin1Char('"'));
ret.prepend(QLatin1Char('"'));
}
return ret;
}
} // namespace Internal
} // namespace qbs
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