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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include <QtNetwork>
#include "csvview.h"
//! [constructor]
CSVView::CSVView(const QString &mimeType, QWidget *parent)
: QTableView(parent)
{
this->mimeType = mimeType;
setEditTriggers(NoEditTriggers);
setSelectionBehavior(SelectRows);
setSelectionMode(SingleSelection);
}
//! [constructor]
void CSVView::updateModel()
{
QNetworkReply *reply = static_cast<QNetworkReply *>(sender());
if (reply->error() != QNetworkReply::NoError)
return;
bool hasHeader = false;
QString charset = "latin1";
foreach (QString piece, mimeType.split(";")) {
piece = piece.trimmed();
if (piece.contains("=")) {
int index = piece.indexOf("=");
QString left = piece.left(index).trimmed();
QString right = piece.mid(index + 1).trimmed();
if (left == "header")
hasHeader = (right == "present");
else if (left == "charset")
charset = right;
}
}
QTextStream stream(reply);
stream.setCodec(QTextCodec::codecForName(charset.toLatin1()));
QStandardItemModel *model = new QStandardItemModel(this);
QList<QStandardItem *> items;
bool firstLine = hasHeader;
bool wasQuote = false;
bool wasCR = false;
bool quoted = false;
QString text;
while (!stream.atEnd()) {
QString ch = stream.read(1);
if (wasQuote) {
if (ch == "\"") {
if (quoted) {
text += ch; // quoted "" are inserted as "
wasQuote = false; // no quotes are pending
} else {
quoted = true; // unquoted "" starts quoting
wasQuote = true; // with a pending quote
}
continue; // process the next character
} else {
quoted = !quoted; // process the pending quote
wasQuote = false; // no quotes are pending
} // process the current character
} else if (wasCR) {
wasCR = false;
if (ch == "\n") { // CR LF represents the end of a row
if (!text.isEmpty())
items.append(new QStandardItem(QString(text)));
addRow(firstLine, model, items);
items.clear();
text = "";
firstLine = false;
continue; // process the next character
} else
text += "\r"; // CR on its own is inserted
} // process the current character
// wasQuote is never true here.
// wasCR is never true here.
if (ch == "\"")
wasQuote = true; // handle the pending quote later
else if (ch == ",") {
if (quoted)
text += ch;
else {
items.append(new QStandardItem(QString(text)));
text = "";
}
}
else if (ch == "\r") {
if (!quoted)
wasCR = true;
else
text += ch;
}
else if (ch == "\n")
text += ch;
else
text += ch;
}
if (items.count() > 0)
addRow(firstLine, model, items);
reply->close();
setModel(model);
connect(selectionModel(),
SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)),
this, SLOT(exportRow(const QModelIndex &)));
resizeColumnsToContents();
horizontalHeader()->setStretchLastSection(true);
}
void CSVView::addRow(bool firstLine, QStandardItemModel *model,
const QList<QStandardItem *> &items)
{
if (firstLine) {
for (int j = 0; j < items.count(); ++j)
model->setHorizontalHeaderItem(j, items[j]);
} else
model->appendRow(items);
}
//! [export row]
void CSVView::exportRow(const QModelIndex ¤t)
{
QString name = model()->index(current.row(), 0).data().toString();
QString address = model()->index(current.row(), 1).data().toString();
QString quantity = model()->index(current.row(), 2).data().toString();
emit rowSelected(name, address, quantity);
}
//! [export row]
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