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Diffstat (limited to 'src/corelib/io/qtextstream_p.h')
-rw-r--r-- | src/corelib/io/qtextstream_p.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/corelib/io/qtextstream_p.h b/src/corelib/io/qtextstream_p.h new file mode 100644 index 0000000000..d5d5288426 --- /dev/null +++ b/src/corelib/io/qtextstream_p.h @@ -0,0 +1,185 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QTEXTSTREAM_P_H +#define QTEXTSTREAM_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include "qtextstream.h" +#ifndef QT_NO_TEXTCODEC +#include "qtextcodec.h" +#endif + +QT_BEGIN_NAMESPACE + +#ifndef QT_NO_QOBJECT +class QDeviceClosedNotifier : public QObject +{ + Q_OBJECT +public: + inline QDeviceClosedNotifier() + { } + + inline void setupDevice(QTextStream *stream, QIODevice *device) + { + disconnect(); + if (device) + connect(device, SIGNAL(aboutToClose()), this, SLOT(flushStream())); + this->stream = stream; + } + +public Q_SLOTS: + inline void flushStream() { stream->flush(); } + +private: + QTextStream *stream; +}; +#endif + +class QTextStreamPrivate +{ + Q_DECLARE_PUBLIC(QTextStream) +public: + QTextStreamPrivate(QTextStream *q_ptr); + ~QTextStreamPrivate(); + void reset(); + + // device + QIODevice *device; +#ifndef QT_NO_QOBJECT + QDeviceClosedNotifier deviceClosedNotifier; +#endif + bool deleteDevice; + + // string + QString *string; + int stringOffset; + QIODevice::OpenMode stringOpenMode; + +#ifndef QT_NO_TEXTCODEC + // codec + QTextCodec *codec; + QTextCodec::ConverterState readConverterState; + QTextCodec::ConverterState writeConverterState; + QTextCodec::ConverterState *readConverterSavedState; + bool autoDetectUnicode; +#endif + + // i/o + enum TokenDelimiter { + Space, + NotSpace, + EndOfLine + }; + + QString read(int maxlen); + bool scan(const QChar **ptr, int *tokenLength, + int maxlen, TokenDelimiter delimiter); + inline const QChar *readPtr() const; + inline void consumeLastToken(); + inline void consume(int nchars); + void saveConverterState(qint64 newPos); + void restoreToSavedConverterState(); + int lastTokenSize; + + // Return value type for getNumber() + enum NumberParsingStatus { + npsOk, + npsMissingDigit, + npsInvalidPrefix + }; + + inline bool getChar(QChar *ch); + inline void ungetChar(QChar ch); + NumberParsingStatus getNumber(qulonglong *l); + bool getReal(double *f); + + inline void write(const QString &data); + inline void putString(const QString &ch, bool number = false); + void putNumber(qulonglong number, bool negative); + + // buffers + bool fillReadBuffer(qint64 maxBytes = -1); + void resetReadBuffer(); + void flushWriteBuffer(); + QString writeBuffer; + QString readBuffer; + int readBufferOffset; + int readConverterSavedStateOffset; //the offset between readBufferStartDevicePos and that start of the buffer + qint64 readBufferStartDevicePos; + + // streaming parameters + class Params + { + public: + void reset(); + + int realNumberPrecision; + int integerBase; + int fieldWidth; + QChar padChar; + QTextStream::FieldAlignment fieldAlignment; + QTextStream::RealNumberNotation realNumberNotation; + QTextStream::NumberFlags numberFlags; + }; + Params params; + + // status + QTextStream::Status status; + + QLocale locale; + + QTextStream *q_ptr; +}; + +QT_END_NAMESPACE + +#endif // QTEXTSTREAM_P_H |