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/**************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** 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://www.qt.io/licensing. For further information
** use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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 "argumentscollector.h"
#include <QFileInfo>
#include <QCoreApplication>
static QString pasteRequestString() { return QLatin1String("paste"); }
static QString listProtocolsRequestString() { return QLatin1String("list-protocols"); }
static QString helpRequestString() { return QLatin1String("help"); }
static QString pasteFileOptionString() { return QLatin1String("-file"); }
static QString pasteProtocolOptionString() { return QLatin1String("-protocol"); }
namespace {
struct ArgumentErrorException
{
ArgumentErrorException(const QString &error) : error(error) {}
const QString error;
};
}
ArgumentsCollector::ArgumentsCollector(const QStringList &availableProtocols)
: m_availableProtocols(availableProtocols)
{
}
bool ArgumentsCollector::collect(const QStringList &args)
{
m_arguments = args;
m_errorString.clear();
m_inputFilePath.clear();
m_protocol.clear();
try {
setRequest();
if (m_requestType == RequestTypePaste)
setPasteOptions();
return true;
} catch (const ArgumentErrorException &ex) {
m_errorString = ex.error;
return false;
}
}
QString ArgumentsCollector::usageString() const
{
QString usage = QString::fromLatin1("Usage:\n\t%1 <request> [ <request options>]\n\t")
.arg(QFileInfo(QCoreApplication::applicationFilePath()).fileName());
usage += QString::fromLatin1("Possible requests: \"%1\", \"%2\", \"%3\"\n\t")
.arg(pasteRequestString(), listProtocolsRequestString(), helpRequestString());
usage += QString::fromLatin1("Possible options for request \"%1\": \"%2 <file>\" (default: stdin), "
"\"%3 <protocol>\"\n")
.arg(pasteRequestString(), pasteFileOptionString(), pasteProtocolOptionString());
return usage;
}
void ArgumentsCollector::setRequest()
{
if (m_arguments.isEmpty())
throw ArgumentErrorException(QLatin1String("No request given"));
const QString requestString = m_arguments.takeFirst();
if (requestString == pasteRequestString())
m_requestType = RequestTypePaste;
else if (requestString == listProtocolsRequestString())
m_requestType = RequestTypeListProtocols;
else if (requestString == helpRequestString())
m_requestType = RequestTypeHelp;
else
throw ArgumentErrorException(QString::fromLatin1("Unknown request \"%1\"").arg(requestString));
}
void ArgumentsCollector::setPasteOptions()
{
while (!m_arguments.isEmpty()) {
if (checkAndSetOption(pasteFileOptionString(), m_inputFilePath))
continue;
if (checkAndSetOption(pasteProtocolOptionString(), m_protocol)) {
if (!m_availableProtocols.contains(m_protocol))
throw ArgumentErrorException(QString::fromLatin1("Unknown protocol \"%1\"").arg(m_protocol));
continue;
}
throw ArgumentErrorException(QString::fromLatin1("Invalid option \"%1\" for request \"%2\"")
.arg(m_arguments.first(), pasteRequestString()));
}
if (m_protocol.isEmpty())
throw ArgumentErrorException(QLatin1String("No protocol given"));
}
bool ArgumentsCollector::checkAndSetOption(const QString &optionString, QString &optionValue)
{
if (m_arguments.first() != optionString)
return false;
if (!optionValue.isEmpty())
throw ArgumentErrorException(QString::fromLatin1("option \"%1\" was given twice").arg(optionString));
m_arguments.removeFirst();
if (m_arguments.isEmpty()) {
throw ArgumentErrorException(QString::fromLatin1("Option \"%1\" requires an argument")
.arg(optionString));
}
optionValue = m_arguments.takeFirst();
return true;
}
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