1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/**************************************************************************
**
** 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://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 "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;
}
|
