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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2016 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:header-decls-only
#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 <QtCore/private/qglobal_p.h>
#include <QtCore/qstringconverter.h>
#include <QtCore/qiodevice.h>
#include <QtCore/qlocale.h>
#include "qtextstream.h"
QT_BEGIN_NAMESPACE
class QTextStreamPrivate
{
Q_DECLARE_PUBLIC(QTextStream)
public:
// streaming parameters
class Params
{
public:
void reset();
// As for QString, QLocale functions taking these: the values of
// precision, base and width can't sensibly need even eight bits, so
// there's no sense expanding beyond int.
int realNumberPrecision;
int integerBase;
int fieldWidth;
QChar padChar;
QTextStream::FieldAlignment fieldAlignment;
QTextStream::RealNumberNotation realNumberNotation;
QTextStream::NumberFlags numberFlags;
};
QTextStreamPrivate(QTextStream *q_ptr);
~QTextStreamPrivate();
void reset();
inline void setupDevice(QIODevice *device);
inline void disconnectFromDevice();
// device
QIODevice *device;
#ifndef QT_NO_QOBJECT
QMetaObject::Connection aboutToCloseConnection;
#endif
// string
QString *string;
qsizetype stringOffset;
QIODevice::OpenMode stringOpenMode;
QStringConverter::Encoding encoding = QStringConverter::Utf8;
QStringEncoder fromUtf16;
QStringDecoder toUtf16;
QStringDecoder savedToUtf16;
QString writeBuffer;
QString readBuffer;
qsizetype readBufferOffset;
qsizetype readConverterSavedStateOffset; //the offset between readBufferStartDevicePos and that start of the buffer
qint64 readBufferStartDevicePos;
Params params;
// status
QTextStream::Status status;
QLocale locale;
QTextStream *q_ptr;
qsizetype lastTokenSize;
bool deleteDevice;
bool autoDetectUnicode;
bool hasWrittenData = false;
bool generateBOM = false;
// i/o
enum TokenDelimiter {
Space,
NotSpace,
EndOfLine
};
QString read(qsizetype maxlen);
bool scan(const QChar **ptr, qsizetype *tokenLength,
qsizetype maxlen, TokenDelimiter delimiter);
inline const QChar *readPtr() const;
inline void consumeLastToken();
inline void consume(qsizetype nchars);
void saveConverterState(qint64 newPos);
void restoreToSavedConverterState();
// 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);
void write(QStringView data);
void write(QChar ch);
void write(QLatin1StringView data);
void writePadding(qsizetype len);
enum class PutStringMode : bool { String, Number };
void putString(QStringView string, PutStringMode = PutStringMode::String);
void putString(QLatin1StringView data, PutStringMode = PutStringMode::String);
void putString(QUtf8StringView data, PutStringMode = PutStringMode::String);
inline void putChar(QChar ch);
void putNumber(qulonglong number, bool negative);
struct PaddingResult {
qsizetype left, right;
};
PaddingResult padding(qsizetype len) const;
// buffers
bool fillReadBuffer(qint64 maxBytes = -1);
void resetReadBuffer();
void flushWriteBuffer();
private:
template <typename Appendable>
void writeImpl(Appendable data);
template <typename StringView>
void putStringImpl(StringView view, PutStringMode mode);
};
QT_END_NAMESPACE
#endif // QTEXTSTREAM_P_H
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