/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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:
**
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** 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 Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
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**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** $QT_END_LICENSE$
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****************************************************************************/
#include <QTextDocument>
#include <QtNetwork>
#include "ftpreply.h"
//! [constructor]
FtpReply::FtpReply(const QUrl &url)
: QNetworkReply()
{
ftp = new QFtp(this);
connect(ftp, SIGNAL(listInfo(QUrlInfo)), this, SLOT(processListInfo(QUrlInfo)));
connect(ftp, SIGNAL(readyRead()), this, SLOT(processData()));
connect(ftp, SIGNAL(commandFinished(int, bool)), this, SLOT(processCommand(int, bool)));
offset = 0;
units = QStringList() << tr("bytes") << tr("K") << tr("M") << tr("G")
<< tr("Ti") << tr("Pi") << tr("Ei") << tr("Zi")
<< tr("Yi");
setUrl(url);
ftp->connectToHost(url.host());
}
//! [constructor]
//! [process command]
void FtpReply::processCommand(int, bool err)
{
if (err) {
setError(ContentNotFoundError, tr("Unknown command"));
emit error(ContentNotFoundError);
return;
}
switch (ftp->currentCommand()) {
case QFtp::ConnectToHost:
ftp->login();
break;
case QFtp::Login:
ftp->list(url().path());
break;
case QFtp::List:
if (items.size() == 1)
ftp->get(url().path());
else
setListContent();
break;
case QFtp::Get:
setContent();
default:
;
}
}
//! [process command]
//! [process list info]
void FtpReply::processListInfo(const QUrlInfo &urlInfo)
{
items.append(urlInfo);
}
//! [process list info]
//! [process data]
void FtpReply::processData()
{
content += ftp->readAll();
}
//! [process data]
//! [set content]
void FtpReply::setContent()
{
open(ReadOnly | Unbuffered);
setHeader(QNetworkRequest::ContentLengthHeader, QVariant(content.size()));
emit readyRead();
emit finished();
ftp->close();
}
//! [set content]
//! [set list content]
void FtpReply::setListContent()
{
QUrl u = url();
if (!u.path().endsWith("/"))
u.setPath(u.path() + "/");
QString base_url = url().toString();
QString base_path = u.path();
open(ReadOnly | Unbuffered);
QString content(
"<html>\n"
"<head>\n"
" <title>" + Qt::escape(base_url) + "</title>\n"
" <style type=\"text/css\">\n"
" th { background-color: #aaaaaa; color: black }\n"
" table { border: solid 1px #aaaaaa }\n"
" tr.odd { background-color: #dddddd; color: black\n }\n"
" tr.even { background-color: white; color: black\n }\n"
" </style>\n"
"</head>\n\n"
"<body>\n"
"<h1>" + tr("Listing for %1").arg(base_path) + "</h1>\n\n"
"<table align=\"center\" cellspacing=\"0\" width=\"90%\">\n"
"<tr><th>Name</th><th>Size</th></tr>\n");
QUrl parent = u.resolved(QUrl(".."));
if (parent.isParentOf(u))
content += QString("<tr><td><strong><a href=\"" + parent.toString() + "\">"
+ tr("Parent directory") + "</a></strong></td><td></td></tr>\n");
int i = 0;
foreach (const QUrlInfo &item, items) {
QUrl child = u.resolved(QUrl(item.name()));
if (i == 0)
content += QString("<tr class=\"odd\">");
else
content += QString("<tr class=\"even\">");
content += QString("<td><a href=\"" + child.toString() + "\">"
+ Qt::escape(item.name()) + "</a></td>");
qint64 size = item.size();
int unit = 0;
while (size) {
qint64 new_size = size/1024;
if (new_size && unit < units.size()) {
size = new_size;
unit += 1;
} else
break;
}
if (item.isFile())
content += QString("<td>" + QString::number(size) + " "
+ units[unit] + "</td></tr>\n");
else
content += QString("<td></td></tr>\n");
i = 1 - i;
}
content += QString("</table>\n"
"</body>\n"
"</html>\n");
this->content = content.toUtf8();
setHeader(QNetworkRequest::ContentTypeHeader, QVariant("text/html; charset=UTF-8"));
setHeader(QNetworkRequest::ContentLengthHeader, QVariant(this->content.size()));
emit readyRead();
emit finished();
ftp->close();
}
//! [set list content]
// QIODevice methods
//! [abort]
void FtpReply::abort()
{
}
//! [abort]
//! [bytes available]
qint64 FtpReply::bytesAvailable() const
{
return content.size() - offset + QIODevice::bytesAvailable();
}
//! [bytes available]
//! [is sequential]
bool FtpReply::isSequential() const
{
return true;
}
//! [is sequential]
//! [read data]
qint64 FtpReply::readData(char *data, qint64 maxSize)
{
if (offset < content.size()) {
qint64 number = qMin(maxSize, content.size() - offset);
memcpy(data, content.constData() + offset, number);
offset += number;
return number;
} else
return -1;
}
//! [read data]