731 lines
18 KiB
C++
731 lines
18 KiB
C++
/****************************************************************************
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** Copyright (c) 2006 - 2011, the LibQxt project.
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** See the Qxt AUTHORS file for a list of authors and copyright holders.
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** * Neither the name of the LibQxt project nor the
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** names of its contributors may be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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** DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**
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** <http://libqxt.org> <foundation@libqxt.org>
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*****************************************************************************/
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/*!
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\class QxtCsvModel
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\brief The QxtCsvModel class provides a QAbstractTableModel for CSV Files
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*/
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#include "qxtcsvmodel.h"
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#include <QFile>
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#include <QIODevice>
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#include <QList>
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#include <QTextStream>
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#include "../vmisc/diagnostic.h"
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class QxtCsvModelPrivate : public QxtPrivate<QxtCsvModel>
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{
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public:
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QxtCsvModelPrivate() : csvData(), header(), maxColumn(0), quoteMode(QxtCsvModel::DefaultQuoteMode)
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{}
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QXT_DECLARE_PUBLIC(QxtCsvModel)
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virtual ~QxtCsvModelPrivate() Q_DECL_EQ_DEFAULT;
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QList<QStringList> csvData;
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QStringList header;
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int maxColumn;
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QxtCsvModel::QuoteMode quoteMode;
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private:
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Q_DISABLE_COPY(QxtCsvModelPrivate)
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};
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QT_WARNING_PUSH
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QT_WARNING_DISABLE_GCC("-Weffc++")
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/*!
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Creates an empty QxtCsvModel with parent \a parent.
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*/
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QxtCsvModel::QxtCsvModel(QObject *parent) : QAbstractTableModel(parent)
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{
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QXT_INIT_PRIVATE(QxtCsvModel)
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}
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/*!
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Creates a QxtCsvModel with the parent \a parent and content loaded from \a file.
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See \a setSource for information on the \a withHeader and \a separator properties, or
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if you need control over the quoting method or codec used to parse the file.
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\sa setSource
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*/
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QxtCsvModel::QxtCsvModel(QIODevice *file, QObject *parent, bool withHeader, QChar separator, QTextCodec* codec)
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: QAbstractTableModel(parent)
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{
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QXT_INIT_PRIVATE(QxtCsvModel)
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setSource(file, withHeader, separator, codec);
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}
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/*!
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\overload
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Creates a QxtCsvModel with the parent \a parent and content loaded from \a file.
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See \a setSource for information on the \a withHeader and \a separator properties, or
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if you need control over the quoting method or codec used to parse the file.
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\sa setSource
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*/
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QxtCsvModel::QxtCsvModel(const QString &filename, QObject *parent, bool withHeader, QChar separator, QTextCodec* codec)
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: QAbstractTableModel(parent)
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{
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QXT_INIT_PRIVATE(QxtCsvModel)
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QFile src(filename);
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setSource(&src, withHeader, separator, codec);
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}
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QT_WARNING_POP
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/*!
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\reimp
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*/
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int QxtCsvModel::rowCount(const QModelIndex& parent) const
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{
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if (parent.row() != -1 && parent.column() != -1)
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{
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return 0;
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}
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return qxt_d().csvData.count();
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}
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/*!
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\reimp
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*/
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int QxtCsvModel::columnCount(const QModelIndex& parent) const
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{
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if (parent.row() != -1 && parent.column() != -1)
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{
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return 0;
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}
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return qxt_d().maxColumn;
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}
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/*!
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\reimp
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*/
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QVariant QxtCsvModel::data(const QModelIndex& index, int role) const
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{
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if (index.parent() != QModelIndex())
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{
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return QVariant();
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}
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if (role == Qt::DisplayRole || role == Qt::EditRole || role == Qt::UserRole)
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{
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if (index.row() < 0 || index.column() < 0 || index.row() >= rowCount())
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{
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return QVariant();
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}
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const QStringList& row = qxt_d().csvData[index.row()];
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if (index.column() >= row.length())
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{
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return QVariant();
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}
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return row[index.column()];
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}
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return QVariant();
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}
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/*!
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\reimp
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*/
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QVariant QxtCsvModel::headerData(int section, Qt::Orientation orientation, int role) const
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{
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if (section < qxt_d().header.count() && orientation == Qt::Horizontal && (role == Qt::DisplayRole
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|| role == Qt::EditRole
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|| role == Qt::UserRole))
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{
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return qxt_d().header[section];
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}
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else
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{
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return QAbstractTableModel::headerData(section, orientation, role);
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}
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}
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/*!
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\overload
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Reads in a CSV file from the provided \a file using \a codec.
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*/
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void QxtCsvModel::setSource(const QString &filename, bool withHeader, QChar separator, QTextCodec* codec)
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{
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QFile src(filename);
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setSource(&src, withHeader, separator, codec);
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}
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/*!
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Reads in a CSV file from the provided \a file using \a codec.
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The value of \a separator will be used to delimit fields, subject to the specified \a quoteMode.
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If \a withHeader is set to true, the first line of the file will be used to populate the model's
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horizontal header.
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\sa quoteMode
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*/
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void QxtCsvModel::setSource(QIODevice *file, bool withHeader, QChar separator, QTextCodec* codec)
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{
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QxtCsvModelPrivate* d_ptr = &qxt_d();
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bool headerSet = !withHeader;
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if (not file->isOpen())
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{
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file->open(QIODevice::ReadOnly);
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}
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if (withHeader)
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{
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d_ptr->maxColumn = 0;
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}
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else
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{
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d_ptr->maxColumn = d_ptr->header.size();
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}
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d_ptr->csvData.clear();
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QStringList row;
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QString field;
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QChar quote;
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QChar ch, buffer(0);
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bool readCR = false;
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QTextStream stream(file);
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codec ? stream.setCodec(codec) : stream.setAutoDetectUnicode(true);
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while (not stream.atEnd())
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{
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if (buffer != QChar(0))
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{
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ch = buffer;
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buffer = QChar(0);
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}
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else
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{
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stream >> ch;
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}
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if (ch == '\n' && readCR)
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{
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continue;
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}
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else if (ch == '\r')
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{
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readCR = true;
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}
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else
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{
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readCR = false;
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}
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if (ch != separator && (ch.category() == QChar::Separator_Line || ch.category() == QChar::Separator_Paragraph
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|| ch.category() == QChar::Other_Control))
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{
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row << field;
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field.clear();
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if (not row.isEmpty())
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{
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if (not headerSet)
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{
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d_ptr->header = row;
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headerSet = true;
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}
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else
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{
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d_ptr->csvData.append(row);
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}
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if (row.length() > d_ptr->maxColumn)
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{
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d_ptr->maxColumn = row.length();
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}
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}
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row.clear();
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}
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else if ((d_ptr->quoteMode & DoubleQuote && ch == '"') || (d_ptr->quoteMode & SingleQuote && ch == '\''))
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{
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quote = ch;
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do
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{
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stream >> ch;
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if (ch == '\\' && d_ptr->quoteMode & BackslashEscape)
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{
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stream >> ch;
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}
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else if (ch == quote)
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{
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if (d_ptr->quoteMode & TwoQuoteEscape)
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{
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stream >> buffer;
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if (buffer == quote)
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{
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buffer = QChar(0);
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field.append(ch);
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continue;
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}
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}
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break;
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}
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field.append(ch);
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} while (!stream.atEnd());
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}
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else if (ch == separator)
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{
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row << field;
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field.clear();
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}
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else
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{
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field.append(ch);
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}
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}
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if (not field.isEmpty())
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{
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row << field;
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}
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if (not row.isEmpty())
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{
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if (not headerSet)
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{
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d_ptr->header = row;
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}
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else
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{
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d_ptr->csvData.append(row);
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}
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}
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file->close();
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}
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/*!
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Sets the horizontal headers of the model to the values provided in \a data.
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*/
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void QxtCsvModel::setHeaderData(const QStringList& data)
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{
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qxt_d().header = data;
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emit headerDataChanged(Qt::Horizontal, 0, data.count());
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::setHeaderData(int section, Qt::Orientation orientation, const QVariant& value, int role)
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{
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if (orientation != Qt::Horizontal)
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{
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return false; // We don't support the vertical header
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}
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if (role != Qt::DisplayRole && role != Qt::EditRole)
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{
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return false; // We don't support any other roles
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}
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if (section < 0)
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{
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return false; // Bogus input
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}
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while (section > qxt_d().header.size())
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{
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qxt_d().header << QString();
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}
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qxt_d().header[section] = value.toString();
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emit headerDataChanged(Qt::Horizontal, section, section);
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return true;
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::setData(const QModelIndex& index, const QVariant& data, int role)
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{
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if (index.parent() != QModelIndex())
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{
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return false;
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}
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if (role == Qt::DisplayRole || role == Qt::EditRole || role == Qt::UserRole)
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{
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if (index.row() >= rowCount() || index.column() >= columnCount() || index.row() < 0 || index.column() < 0)
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{
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return false;
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}
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QStringList& row = qxt_d().csvData[index.row()];
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while (row.length() <= index.column())
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{
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row << QString();
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}
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row[index.column()] = data.toString();
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emit dataChanged(index, index);
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return true;
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}
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return false;
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::insertRow(int row, const QModelIndex& parent)
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{
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return insertRows(row, 1, parent);
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::insertRows(int row, int count, const QModelIndex& parent)
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{
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if (parent != QModelIndex() || row < 0)
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{
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return false;
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}
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emit beginInsertRows(parent, row, row + count);
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QxtCsvModelPrivate& d_ptr = qxt_d();
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if (row >= rowCount())
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{
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for(int i = 0; i < count; i++)
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{
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d_ptr.csvData << QStringList();
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}
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}
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else
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{
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for(int i = 0; i < count; i++)
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{
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d_ptr.csvData.insert(row, QStringList());
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}
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}
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emit endInsertRows();
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return true;
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::removeRow(int row, const QModelIndex& parent)
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{
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return removeRows(row, 1, parent);
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::removeRows(int row, int count, const QModelIndex& parent)
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{
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if (parent != QModelIndex() || row < 0)
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{
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return false;
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}
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if (row >= rowCount())
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{
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return false;
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}
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if (row + count >= rowCount())
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{
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count = rowCount() - row;
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}
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emit beginRemoveRows(parent, row, row + count);
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QxtCsvModelPrivate& d_ptr = qxt_d();
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for (int i = 0;i < count;i++)
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{
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d_ptr.csvData.removeAt(row);
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}
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emit endRemoveRows();
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return true;
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::insertColumn(int col, const QModelIndex& parent)
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{
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return insertColumns(col, 1, parent);
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::insertColumns(int col, int count, const QModelIndex& parent)
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{
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if (parent != QModelIndex() || col < 0)
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{
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return false;
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}
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beginInsertColumns(parent, col, col + count - 1);
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QxtCsvModelPrivate& d_ptr = qxt_d();
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for (int i = 0; i < rowCount(); i++)
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{
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QStringList& row = d_ptr.csvData[i];
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while (col >= row.length())
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{
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row.append(QString());
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}
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for (int j = 0; j < count; j++)
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{
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row.insert(col, QString());
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}
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}
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for (int i = 0; i < count ;i++)
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{
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d_ptr.header.insert(col, QString());
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}
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d_ptr.maxColumn += count;
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endInsertColumns();
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return true;
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::removeColumn(int col, const QModelIndex& parent)
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{
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return removeColumns(col, 1, parent);
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}
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/*!
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\reimp
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*/
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bool QxtCsvModel::removeColumns(int col, int count, const QModelIndex& parent)
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{
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if (parent != QModelIndex() || col < 0)
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{
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return false;
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}
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if (col >= columnCount())
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{
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return false;
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}
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if (col + count >= columnCount())
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{
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count = columnCount() - col;
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}
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emit beginRemoveColumns(parent, col, col + count);
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QxtCsvModelPrivate& d_ptr = qxt_d();
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for (int i = 0; i < rowCount(); i++)
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{
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for (int j = 0; j < count; j++)
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{
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d_ptr.csvData[i].removeAt(col);
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}
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}
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for (int i = 0; i < count; i++)
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{
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d_ptr.header.removeAt(col);
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}
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emit endRemoveColumns();
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return true;
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}
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static QString qxt_addCsvQuotes(QxtCsvModel::QuoteMode mode, QString field)
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{
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bool addDoubleQuotes = ((mode & QxtCsvModel::DoubleQuote) && field.contains('"'));
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bool addSingleQuotes = ((mode & QxtCsvModel::SingleQuote) && field.contains('\''));
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bool quoteField = (mode & QxtCsvModel::AlwaysQuoteOutput) || addDoubleQuotes || addSingleQuotes;
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if (quoteField && !addDoubleQuotes && !addSingleQuotes)
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{
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if (mode & QxtCsvModel::DoubleQuote)
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{
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addDoubleQuotes = true;
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}
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else if(mode & QxtCsvModel::SingleQuote)
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{
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addSingleQuotes = true;
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}
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}
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if (mode & QxtCsvModel::BackslashEscape)
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{
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if (addDoubleQuotes)
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{
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return '"' + field.replace("\\", "\\\\").replace("\"", "\\\"") + '"';
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}
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if (addSingleQuotes)
|
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{
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return '\'' + field.replace("\\", "\\\\").replace("'", "\\'") + '\'';
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}
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}
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else
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{
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if (addDoubleQuotes)
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{
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return '"' + field.replace("\"", "\"\"") + '"';
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}
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if (addSingleQuotes)
|
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{
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return '\'' + field.replace("'", "''") + '\'';
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}
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}
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return field;
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}
|
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|
|
/*!
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|
Outputs the content of the model as a CSV file to the device \a dest using \a codec.
|
|
|
|
Fields in the output file will be separated by \a separator. Set \a withHeader to true
|
|
to output a row of headers at the top of the file.
|
|
*/
|
|
// cppcheck-suppress funcArgNamesDifferent
|
|
bool QxtCsvModel::toCSV(QIODevice* dest, QString &error, bool withHeader, QChar separator, QTextCodec* codec) const
|
|
{
|
|
const QxtCsvModelPrivate& d_ptr = qxt_d();
|
|
int row, col, rows, cols;
|
|
rows = rowCount();
|
|
cols = columnCount();
|
|
QString data;
|
|
if (not dest->isOpen())
|
|
{
|
|
if ( not dest->open(QIODevice::WriteOnly | QIODevice::Truncate))
|
|
{
|
|
error = dest->errorString();
|
|
return false;
|
|
}
|
|
}
|
|
QTextStream stream(dest);
|
|
if (codec)
|
|
{
|
|
stream.setCodec(codec);
|
|
}
|
|
if (withHeader)
|
|
{
|
|
data = "";
|
|
for (col = 0; col < cols; ++col)
|
|
{
|
|
if (col > 0)
|
|
{
|
|
data += separator;
|
|
}
|
|
data += qxt_addCsvQuotes(d_ptr.quoteMode, d_ptr.header.at(col));
|
|
}
|
|
stream << data << endl;
|
|
}
|
|
for (row = 0; row < rows; ++row)
|
|
{
|
|
const QStringList& rowData = d_ptr.csvData[row];
|
|
data = "";
|
|
for (col = 0; col < cols; ++col)
|
|
{
|
|
if (col > 0)
|
|
{
|
|
data += separator;
|
|
}
|
|
if (col < rowData.length())
|
|
{
|
|
data += qxt_addCsvQuotes(d_ptr.quoteMode, rowData.at(col));
|
|
}
|
|
else
|
|
{
|
|
data += qxt_addCsvQuotes(d_ptr.quoteMode, QString());
|
|
}
|
|
}
|
|
stream << data << endl;
|
|
}
|
|
stream << flush;
|
|
dest->close();
|
|
return true;
|
|
}
|
|
|
|
/*!
|
|
\overload
|
|
|
|
Outputs the content of the model as a CSV file to the file specified by \a filename using \a codec.
|
|
|
|
Fields in the output file will be separated by \a separator. Set \a withHeader to true
|
|
to output a row of headers at the top of the file.
|
|
*/
|
|
bool QxtCsvModel::toCSV(const QString &filename, QString &error, bool withHeader, QChar separator,
|
|
QTextCodec* codec) const
|
|
{
|
|
QFile dest(filename);
|
|
return toCSV(&dest, error, withHeader, separator, codec);
|
|
}
|
|
|
|
/*!
|
|
\reimp
|
|
*/
|
|
Qt::ItemFlags QxtCsvModel::flags(const QModelIndex& index) const
|
|
{
|
|
return Qt::ItemIsEditable | QAbstractTableModel::flags(index);
|
|
}
|
|
|
|
/*!
|
|
* Returns the current quoting mode.
|
|
* \sa setQuoteMode
|
|
*/
|
|
QxtCsvModel::QuoteMode QxtCsvModel::quoteMode() const
|
|
{
|
|
return qxt_d().quoteMode;
|
|
}
|
|
|
|
/*!
|
|
* Sets the current quoting mode. The default quoting mode is BothQuotes | BackslashEscape.
|
|
*
|
|
* The quoting mode determines what kinds of quoting is used for reading and writing CSV files.
|
|
* \sa quoteMode
|
|
* \sa QuoteOption
|
|
*/
|
|
void QxtCsvModel::setQuoteMode(QuoteMode mode)
|
|
{
|
|
qxt_d().quoteMode = mode;
|
|
}
|
|
|
|
/*!
|
|
Sets the content of the cell at row \a row and column \a column to \a value.
|
|
|
|
\sa text
|
|
*/
|
|
void QxtCsvModel::setText(int row, int column, const QString& value)
|
|
{
|
|
// cppcheck-suppress indexCalled
|
|
setData(index(row, column), value);
|
|
}
|
|
|
|
/*!
|
|
Fetches the content of the cell at row \a row and column \a column.
|
|
|
|
\sa setText
|
|
*/
|
|
QString QxtCsvModel::text(int row, int column) const
|
|
{
|
|
// cppcheck-suppress indexCalled
|
|
return data(index(row, column)).toString();
|
|
}
|
|
|
|
/*!
|
|
Sets the content of the header for column \a column to \a value.
|
|
|
|
\sa headerText
|
|
*/
|
|
void QxtCsvModel::setHeaderText(int column, const QString& value)
|
|
{
|
|
setHeaderData(column, Qt::Horizontal, value);
|
|
}
|
|
|
|
/*!
|
|
Fetches the content of the cell at row \a row and column \a column.
|
|
|
|
\sa setText
|
|
*/
|
|
QString QxtCsvModel::headerText(int column) const
|
|
{
|
|
return headerData(column, Qt::Horizontal).toString();
|
|
}
|