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/****************************************************************************
**
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Pelagicore Application Manager.
**
** $QT_BEGIN_LICENSE:LGPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite 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 The Qt Company. For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
** SPDX-License-Identifier: LGPL-3.0
**
****************************************************************************/
#include "debugwrapper.h"
QT_BEGIN_NAMESPACE_AM
namespace DebugWrapper {
bool parseSpecification(const QString &debugWrapperSpecification, QStringList &resultingCommand,
QMap<QString, QString> &resultingEnvironment)
{
QStringList cmd;
QMap<QString, QString> env;
// split at ' ', but also accept escape sequences for '\ ', '\n' and '\\'
// all leading FOO=BAR args will be converted to env var assignments
bool escaped = false;
bool canBeEnvVar = true;
bool isEnvVar = false;
static const QString program = qSL("%program%");
static const QString arguments = qSL("%arguments%");
int foundProgram = 0;
int foundArguments = 0;
QString str;
QString value;
QString *current = &str;
int size = debugWrapperSpecification.size();
for (int i = 0; i <= size; ++i) {
const QChar c = (i < size) ? debugWrapperSpecification.at(i) : QChar(0);
if (!escaped || c.isNull()) {
switch (c.unicode()) {
case '\\':
escaped = true;
break;
case '=':
// switch to value parsing if this can be an env var and if this is the first =
// all other = are copied verbatim
isEnvVar = canBeEnvVar;
if (isEnvVar && current == &str)
current = &value;
else
current->append(qL1C('='));
break;
case ' ':
case '\0':
// found the end of an argument: add to env vars or cmd and reset state
if (!str.isEmpty()) {
if (isEnvVar) {
env.insert(str, value);
} else {
cmd.append(str);
foundArguments = foundArguments || str.contains(arguments);
foundProgram = foundProgram || str.contains(program);
}
}
canBeEnvVar = isEnvVar; // stop parsing as envvar as soon as we get a normal arg
isEnvVar = false;
current = &str;
str.clear();
value.clear();
break;
default:
current->append(c);
break;
}
} else {
switch (c.unicode()) {
case '\\': current->append(qL1C('\\')); break;
case ' ': current->append(qL1C(' ')); break;
case 'n': current->append(qL1C('\n')); break;
default: return false;
}
escaped = false;
}
}
if (cmd.isEmpty() && env.isEmpty())
return false;
// convenience: if the spec doesn't include %program% or %arguments%, then simply append them
if (!foundProgram)
cmd << program;
if (!foundArguments)
cmd << arguments;
resultingCommand = cmd;
resultingEnvironment = env;
return true;
}
QStringList substituteCommand(const QStringList &debugWrapperCommand, const QString &program,
const QStringList &arguments)
{
QString stringifiedArguments = arguments.join(qL1C(' '));
QStringList result;
for (const QString &s : debugWrapperCommand) {
if (s == qSL("%arguments%")) {
result << arguments;
} else {
QString str(s);
str.replace(qL1S("%program%"), program);
str.replace(qL1S("%arguments%"), stringifiedArguments);
result << str;
}
}
return result;
}
} // namespace DebugWrapper
QT_END_NAMESPACE_AM
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