140 lines
4.7 KiB
C++
140 lines
4.7 KiB
C++
/*
|
|
* Cantata
|
|
*
|
|
* Copyright (c) 2011-2013 Craig Drummond <craig.p.drummond@gmail.com>
|
|
*
|
|
* ----
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "rssparser.h"
|
|
#include <QXmlStreamReader>
|
|
#include <QStringList>
|
|
|
|
static const char * constITunesNameSpace = "http://www.itunes.com/dtds/podcast-1.0.dtd";
|
|
static const char * constMediaNameSpace = "http://search.yahoo.com/mrss/";
|
|
|
|
using namespace RssParser;
|
|
|
|
static bool parseUntil(QXmlStreamReader &reader, const QString &elem)
|
|
{
|
|
while (!reader.atEnd()) {
|
|
reader.readNext();
|
|
if (reader.isStartElement() && reader.name() == elem) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void consumeCurrentElement(QXmlStreamReader &reader)
|
|
{
|
|
int level = 1;
|
|
while (0!=level && !reader.atEnd()) {
|
|
switch (reader.readNext()) {
|
|
case QXmlStreamReader::StartElement: ++level; break;
|
|
case QXmlStreamReader::EndElement: --level; break;
|
|
default: break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static QUrl parseImage(QXmlStreamReader &reader)
|
|
{
|
|
QUrl url;
|
|
while (!reader.atEnd()) {
|
|
reader.readNext();
|
|
if (reader.isStartElement()) {
|
|
if (QLatin1String("url")==reader.name()) {
|
|
url=QUrl::fromEncoded(reader.readElementText().toLatin1());
|
|
} else {
|
|
consumeCurrentElement(reader);
|
|
}
|
|
} else if (reader.isEndElement()) {
|
|
break;
|
|
}
|
|
}
|
|
return url;
|
|
}
|
|
|
|
static Episode parseEpisode(QXmlStreamReader &reader)
|
|
{
|
|
Episode ep;
|
|
|
|
while (!reader.atEnd()) {
|
|
reader.readNext();
|
|
const QStringRef name = reader.name();
|
|
|
|
if (reader.isStartElement()) {
|
|
if (QLatin1String("title")==name) {
|
|
ep.name=reader.readElementText();
|
|
} else if (QLatin1String("duration")==name && constITunesNameSpace==reader.namespaceUri()) {
|
|
QStringList parts = reader.readElementText().split(':');
|
|
if (2==parts.count()) {
|
|
ep.duration=(parts[0].toInt() * 60) + parts[1].toInt();
|
|
} else if (parts.count()>=3) {
|
|
ep.duration=(parts[0].toInt() * 60*60) + (parts[1].toInt() * 60) + parts[2].toInt();
|
|
}
|
|
} else if (0==ep.duration && QLatin1String("content")==name && constMediaNameSpace==reader.namespaceUri()) {
|
|
ep.duration=reader.attributes().value(QLatin1String("duration")).toString().toUInt();
|
|
} else if (QLatin1String("enclosure")==name) {
|
|
if (reader.attributes().value(QLatin1String("type")).toString().startsWith(QLatin1String("audio/"))) {
|
|
ep.url=QUrl::fromEncoded(reader.attributes().value(QLatin1String("url")).toString().toAscii());
|
|
}
|
|
consumeCurrentElement(reader);
|
|
} else {
|
|
consumeCurrentElement(reader);
|
|
}
|
|
} else if (reader.isEndElement()) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ep;
|
|
}
|
|
|
|
Channel RssParser::parse(QIODevice *dev)
|
|
{
|
|
Channel ch;
|
|
QXmlStreamReader reader(dev);
|
|
if (parseUntil(reader, QLatin1String("rss")) && parseUntil(reader, QLatin1String("channel"))) {
|
|
while (!reader.atEnd()) {
|
|
reader.readNext();
|
|
|
|
if (reader.isStartElement()) {
|
|
const QStringRef name = reader.name();
|
|
if (ch.name.isEmpty() && QLatin1String("title")==name) {
|
|
ch.name=reader.readElementText();
|
|
} else if (QLatin1String("image")==name && ch.image.isEmpty()) {
|
|
ch.image=parseImage(reader);
|
|
} else if (QLatin1String("item")==name) {
|
|
Episode ep=parseEpisode(reader);
|
|
if (!ep.name.isEmpty() && !ep.url.isEmpty()) {
|
|
ch.episodes.append(ep);
|
|
}
|
|
} else {
|
|
consumeCurrentElement(reader);
|
|
}
|
|
} else if (reader.isEndElement()) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ch;
|
|
}
|