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39
40#include <QtDebug>
41
42#include "qpatternistlocale_p.h"
43
44#include "qiodevicedelegate_p.h"
45
46QT_BEGIN_NAMESPACE
47
48using namespace QPatternist;
49
50QIODeviceDelegate::QIODeviceDelegate(QIODevice *const source) : m_source(source)
51{
52 Q_ASSERT(m_source);
53
54 connect(asender: source, SIGNAL(aboutToClose()), SIGNAL(aboutToClose()));
55 connect(asender: source, SIGNAL(bytesWritten(qint64)), SIGNAL(bytesWritten(qint64)));
56 connect(asender: source, SIGNAL(readChannelFinished()), SIGNAL(readChannelFinished()));
57 connect(asender: source, SIGNAL(readyRead()), SIGNAL(readyRead()));
58
59 /* According to Thiago these two signals are very similar, but QtNetworkAccess uses finished()
60 * instead for a minor but significant reason. */
61 connect(asender: source, SIGNAL(readChannelFinished()), SIGNAL(finished()));
62
63 /* For instance QFile emits no signals, so how do we know if the device has all data available
64 * and it therefore is safe and correct to emit finished()? isSequential() tells us whether it's
65 * not random access, and whether it's safe to emit finished(). */
66 if(m_source->isSequential())
67 QMetaObject::invokeMethod(obj: this, member: "readyRead", type: Qt::QueuedConnection);
68 else
69 QMetaObject::invokeMethod(obj: this, member: "finished", type: Qt::QueuedConnection);
70
71 setOpenMode(QIODevice::ReadOnly);
72
73 /* Set up the timeout timer. */
74 connect(asender: &m_timeout, SIGNAL(timeout()), SLOT(networkTimeout()));
75
76 m_timeout.setSingleShot(true);
77 m_timeout.start(msec: Timeout);
78}
79
80void QIODeviceDelegate::networkTimeout()
81{
82 setErrorString(QtXmlPatterns::tr(sourceText: "Network timeout."));
83 errorOccurred(QNetworkReply::TimeoutError);
84}
85
86void QIODeviceDelegate::abort()
87{
88 /* Do nothing, just to please QNetworkReply's pure virtual. */
89}
90
91bool QIODeviceDelegate::atEnd() const
92{
93 return m_source->atEnd();
94}
95
96qint64 QIODeviceDelegate::bytesAvailable() const
97{
98 return m_source->bytesAvailable();
99}
100
101qint64 QIODeviceDelegate::bytesToWrite() const
102{
103 return m_source->bytesToWrite();
104}
105
106bool QIODeviceDelegate::canReadLine() const
107{
108 return m_source->canReadLine();
109}
110
111void QIODeviceDelegate::close()
112{
113 return m_source->close();
114}
115
116bool QIODeviceDelegate::isSequential() const
117{
118 return m_source->isSequential();
119}
120
121bool QIODeviceDelegate::open(OpenMode mode)
122{
123 const bool success = m_source->open(mode);
124 setOpenMode(m_source->openMode());
125 return success;
126}
127
128qint64 QIODeviceDelegate::pos() const
129{
130 return m_source->pos();
131}
132
133bool QIODeviceDelegate::reset()
134{
135 return m_source->reset();
136}
137
138bool QIODeviceDelegate::seek(qint64 pos)
139{
140 return m_source->seek(pos);
141}
142
143qint64 QIODeviceDelegate::size() const
144{
145 return m_source->size();
146}
147
148bool QIODeviceDelegate::waitForBytesWritten(int msecs)
149{
150 return m_source->waitForBytesWritten(msecs);
151}
152
153bool QIODeviceDelegate::waitForReadyRead(int msecs)
154{
155 return m_source->waitForReadyRead(msecs);
156}
157
158qint64 QIODeviceDelegate::readData(char *data, qint64 maxSize)
159{
160 return m_source->read(data, maxlen: maxSize);
161}
162
163QT_END_NAMESPACE
164
165

source code of qtxmlpatterns/src/xmlpatterns/api/qiodevicedelegate.cpp