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OpenBoard/src/softwareupdate/UBRssHandler.cpp

142 lines
3.6 KiB

/*
* 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 3 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. If not, see <http://www.gnu.org/licenses/>.
*/
#include "frameworks/UBVersion.h"
#include "UBRssHandler.h"
#include "UBSoftwareUpdate.h"
#include "core/memcheck.h"
const QString UBRssHandler::sRssItemElementName = "item";
const QString UBRssHandler::sRssLinkElementName = "link";
const QString UBRssHandler::sUniboardVersionElementName = "ub:version"; // TODO UB 4.x map properly ub namespace
UBRssHandler::UBRssHandler()
: mRssTagParsed(false)
, mInItem(false)
, mInVersion(false)
{
// NOOP
}
UBRssHandler::~UBRssHandler(void)
{
while (!mSoftwareUpdates.isEmpty())
{
delete mSoftwareUpdates.takeFirst();
}
}
bool UBRssHandler::startElement(
const QString & /* namespaceURI */,
const QString & /* localName */,
const QString &qualifiedName,
const QXmlAttributes &attributes)
{
bool ok = true;
if (!mRssTagParsed && qualifiedName != "rss")
{
mError = "This file is not a RSS source.";
ok = false;
}
else if (qualifiedName == "rss")
{
QString version = attributes.value("version");
if (!version.isEmpty() && version != "2.0")
{
mError = "Can only handle RSS 2.0.";
ok = false;
}
else
{
mRssTagParsed = true;
}
}
else if (qualifiedName == sRssItemElementName)
{
mInItem = true;
}
else if (qualifiedName == sUniboardVersionElementName)
{
mInVersion = true;
}
mCurrentText = "";
return ok;
}
bool UBRssHandler::characters(const QString &str)
{
mCurrentText += str;
return true;
}
bool UBRssHandler::endElement(
const QString & /* namespaceURI */,
const QString & /* localName */,
const QString &qualifiedName)
{
bool ok = true;
if (qualifiedName == sRssItemElementName)
{
mInItem = false;
if (mVersion.isValid() && !mDownloadUrl.isEmpty())
{
UBSoftwareUpdate *softwareUpdate = new UBSoftwareUpdate(mVersion, mDownloadUrl);
mSoftwareUpdates.append(softwareUpdate);
}
mVersion = UBVersion();
mDownloadUrl = "";
}
else if (qualifiedName == sRssLinkElementName)
{
if (mInItem)
{
QUrl url(mCurrentText);
if (url.isValid())
mDownloadUrl = mCurrentText;
else
ok = false;
}
}
else if (qualifiedName == sUniboardVersionElementName)
{
if (mInItem)
{
mVersion.setString(mCurrentText);
ok = mVersion.isValid();
mInVersion = false;
}
}
return ok;
}
bool UBRssHandler::fatalError(const QXmlParseException &exception)
{
qWarning() << "Fatal error at line " << exception.lineNumber()
<< ", column " << exception.columnNumber() << ": "
<< exception.message() << mError;
return false;
}
QString UBRssHandler::error() const
{
return mError;
}
QList<UBSoftwareUpdate *> UBRssHandler::softwareUpdates() const
{
return mSoftwareUpdates;
}