You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
414 lines
8.4 KiB
414 lines
8.4 KiB
/*
|
|
* loader.cpp
|
|
*
|
|
* Copyright (c) 2001, 2002, 2003 Frerich Raabe <raabe@kde.org>
|
|
*
|
|
* 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. For licensing and distribution details, check the
|
|
* accompanying file 'COPYING'.
|
|
*/
|
|
#include "loader.h"
|
|
#include "document.h"
|
|
#include "feeddetector.h"
|
|
|
|
#include <tdeio/job.h>
|
|
#include <kprocess.h>
|
|
#include <kstaticdeleter.h>
|
|
#include <kurl.h>
|
|
#include <kdebug.h>
|
|
|
|
#include <tqdom.h>
|
|
#include <tqbuffer.h>
|
|
#include <tqregexp.h>
|
|
#include <tqstring.h>
|
|
#include <tqstringlist.h>
|
|
#include <tqtimer.h>
|
|
|
|
using namespace RSS;
|
|
|
|
DataRetriever::DataRetriever()
|
|
{
|
|
}
|
|
|
|
DataRetriever::~DataRetriever()
|
|
{
|
|
}
|
|
|
|
class FileRetriever::Private
|
|
{
|
|
public:
|
|
|
|
Private()
|
|
: buffer(NULL),
|
|
lastError(0), job(NULL)
|
|
{
|
|
}
|
|
|
|
~Private()
|
|
{
|
|
delete buffer;
|
|
}
|
|
|
|
TQBuffer *buffer;
|
|
int lastError;
|
|
TDEIO::Job *job;
|
|
static KStaticDeleter<TQString> userAgentsd;
|
|
static TQString* userAgent;
|
|
};
|
|
|
|
KStaticDeleter<TQString> FileRetriever::Private::userAgentsd;
|
|
TQString* FileRetriever::Private::userAgent = 0L;
|
|
FileRetriever::FileRetriever()
|
|
: d(new Private)
|
|
{
|
|
}
|
|
|
|
FileRetriever::~FileRetriever()
|
|
{
|
|
delete d;
|
|
}
|
|
|
|
bool FileRetriever::m_useCache = true;
|
|
|
|
TQString FileRetriever::userAgent()
|
|
{
|
|
if (Private::userAgent == 0L)
|
|
FileRetriever::Private::userAgentsd.setObject(Private::userAgent, new TQString);
|
|
return *Private::userAgent;
|
|
}
|
|
|
|
void FileRetriever::setUserAgent(const TQString &ua)
|
|
{
|
|
if (Private::userAgent == 0L)
|
|
FileRetriever::Private::userAgentsd.setObject(Private::userAgent, new TQString);
|
|
(*Private::userAgent) = ua;
|
|
}
|
|
|
|
void FileRetriever::setUseCache(bool enabled)
|
|
{
|
|
m_useCache = enabled;
|
|
}
|
|
|
|
void FileRetriever::retrieveData(const KURL &url)
|
|
{
|
|
if (d->buffer)
|
|
return;
|
|
|
|
d->buffer = new TQBuffer;
|
|
d->buffer->open(IO_WriteOnly);
|
|
|
|
KURL u=url;
|
|
|
|
if (u.protocol()=="feed")
|
|
u.setProtocol("http");
|
|
|
|
d->job = TDEIO::get(u, false, false);
|
|
d->job->addMetaData("cache", m_useCache ? "refresh" : "reload");
|
|
|
|
TQString ua = userAgent();
|
|
if (!ua.isEmpty())
|
|
d->job->addMetaData("UserAgent", ua);
|
|
|
|
|
|
TQTimer::singleShot(1000*90, this, TQT_SLOT(slotTimeout()));
|
|
|
|
connect(d->job, TQT_SIGNAL(data(TDEIO::Job *, const TQByteArray &)),
|
|
TQT_SLOT(slotData(TDEIO::Job *, const TQByteArray &)));
|
|
connect(d->job, TQT_SIGNAL(result(TDEIO::Job *)), TQT_SLOT(slotResult(TDEIO::Job *)));
|
|
connect(d->job, TQT_SIGNAL(permanentRedirection(TDEIO::Job *, const KURL &, const KURL &)),
|
|
TQT_SLOT(slotPermanentRedirection(TDEIO::Job *, const KURL &, const KURL &)));
|
|
}
|
|
|
|
void FileRetriever::slotTimeout()
|
|
{
|
|
abort();
|
|
|
|
delete d->buffer;
|
|
d->buffer = NULL;
|
|
|
|
d->lastError = TDEIO::ERR_SERVER_TIMEOUT;
|
|
|
|
emit dataRetrieved(TQByteArray(), false);
|
|
}
|
|
|
|
int FileRetriever::errorCode() const
|
|
{
|
|
return d->lastError;
|
|
}
|
|
|
|
void FileRetriever::slotData(TDEIO::Job *, const TQByteArray &data)
|
|
{
|
|
d->buffer->writeBlock(data.data(), data.size());
|
|
}
|
|
|
|
void FileRetriever::slotResult(TDEIO::Job *job)
|
|
{
|
|
TQByteArray data = d->buffer->buffer();
|
|
data.detach();
|
|
|
|
delete d->buffer;
|
|
d->buffer = NULL;
|
|
|
|
d->lastError = job->error();
|
|
emit dataRetrieved(data, d->lastError == 0);
|
|
}
|
|
|
|
void FileRetriever::slotPermanentRedirection(TDEIO::Job *, const KURL &, const KURL &newUrl)
|
|
{
|
|
emit permanentRedirection(newUrl);
|
|
}
|
|
|
|
void FileRetriever::abort()
|
|
{
|
|
if (d->job)
|
|
{
|
|
d->job->kill(true);
|
|
d->job = NULL;
|
|
}
|
|
}
|
|
|
|
struct OutputRetriever::Private
|
|
{
|
|
Private() : process(NULL),
|
|
buffer(NULL),
|
|
lastError(0)
|
|
{
|
|
}
|
|
|
|
~Private()
|
|
{
|
|
delete process;
|
|
delete buffer;
|
|
}
|
|
|
|
KShellProcess *process;
|
|
TQBuffer *buffer;
|
|
int lastError;
|
|
};
|
|
|
|
OutputRetriever::OutputRetriever() :
|
|
d(new Private)
|
|
{
|
|
}
|
|
|
|
OutputRetriever::~OutputRetriever()
|
|
{
|
|
delete d;
|
|
}
|
|
|
|
void OutputRetriever::retrieveData(const KURL &url)
|
|
{
|
|
// Ignore subsequent calls if we didn't finish the previous job yet.
|
|
if (d->buffer || d->process)
|
|
return;
|
|
|
|
d->buffer = new TQBuffer;
|
|
d->buffer->open(IO_WriteOnly);
|
|
|
|
d->process = new KShellProcess();
|
|
connect(d->process, TQT_SIGNAL(processExited(TDEProcess *)),
|
|
TQT_SLOT(slotExited(TDEProcess *)));
|
|
connect(d->process, TQT_SIGNAL(receivedStdout(TDEProcess *, char *, int)),
|
|
TQT_SLOT(slotOutput(TDEProcess *, char *, int)));
|
|
*d->process << url.path();
|
|
d->process->start(TDEProcess::NotifyOnExit, TDEProcess::Stdout);
|
|
}
|
|
|
|
int OutputRetriever::errorCode() const
|
|
{
|
|
return d->lastError;
|
|
}
|
|
|
|
void OutputRetriever::slotOutput(TDEProcess *, char *data, int length)
|
|
{
|
|
d->buffer->writeBlock(data, length);
|
|
}
|
|
|
|
void OutputRetriever::slotExited(TDEProcess *p)
|
|
{
|
|
if (!p->normalExit())
|
|
d->lastError = p->exitStatus();
|
|
|
|
TQByteArray data = d->buffer->buffer();
|
|
data.detach();
|
|
|
|
delete d->buffer;
|
|
d->buffer = NULL;
|
|
|
|
delete d->process;
|
|
d->process = NULL;
|
|
|
|
emit dataRetrieved(data, p->normalExit() && p->exitStatus() == 0);
|
|
}
|
|
|
|
struct Loader::Private
|
|
{
|
|
Private() : retriever(NULL),
|
|
lastError(0)
|
|
{
|
|
}
|
|
|
|
~Private()
|
|
{
|
|
delete retriever;
|
|
}
|
|
|
|
DataRetriever *retriever;
|
|
int lastError;
|
|
KURL discoveredFeedURL;
|
|
KURL url;
|
|
};
|
|
|
|
Loader *Loader::create()
|
|
{
|
|
return new Loader;
|
|
}
|
|
|
|
Loader *Loader::create(TQObject *object, const char *slot)
|
|
{
|
|
Loader *loader = create();
|
|
connect(loader, TQT_SIGNAL(loadingComplete(Loader *, Document, Status)),
|
|
object, slot);
|
|
return loader;
|
|
}
|
|
|
|
Loader::Loader() : d(new Private)
|
|
{
|
|
}
|
|
|
|
Loader::~Loader()
|
|
{
|
|
delete d;
|
|
}
|
|
|
|
void Loader::loadFrom(const KURL &url, DataRetriever *retriever)
|
|
{
|
|
if (d->retriever != NULL)
|
|
return;
|
|
|
|
d->url=url;
|
|
d->retriever = retriever;
|
|
|
|
connect(d->retriever, TQT_SIGNAL(dataRetrieved(const TQByteArray &, bool)),
|
|
this, TQT_SLOT(slotRetrieverDone(const TQByteArray &, bool)));
|
|
|
|
d->retriever->retrieveData(url);
|
|
}
|
|
|
|
int Loader::errorCode() const
|
|
{
|
|
return d->lastError;
|
|
}
|
|
|
|
void Loader::abort()
|
|
{
|
|
if (d && d->retriever)
|
|
{
|
|
d->retriever->abort();
|
|
delete d->retriever;
|
|
d->retriever=NULL;
|
|
}
|
|
emit loadingComplete(this, TQDomDocument(), Aborted);
|
|
delete this;
|
|
}
|
|
|
|
const KURL &Loader::discoveredFeedURL() const
|
|
{
|
|
return d->discoveredFeedURL;
|
|
}
|
|
|
|
void Loader::slotRetrieverDone(const TQByteArray &data, bool success)
|
|
{
|
|
d->lastError = d->retriever->errorCode();
|
|
|
|
delete d->retriever;
|
|
d->retriever = NULL;
|
|
|
|
Document rssDoc;
|
|
Status status = Success;
|
|
|
|
if (success) {
|
|
TQDomDocument doc;
|
|
|
|
/* Some servers insert whitespace before the <?xml...?> declaration.
|
|
* TQDom doesn't tolerate that (and it's right, that's invalid XML),
|
|
* so we strip that.
|
|
*/
|
|
|
|
const char *charData = data.data();
|
|
int len = data.count();
|
|
|
|
while (len && TQChar(*charData).isSpace()) {
|
|
--len;
|
|
++charData;
|
|
}
|
|
|
|
if ( len > 3 && TQChar(*charData) == TQChar(0357) ) { // 0357 0273 0277
|
|
len -= 3;
|
|
charData += 3;
|
|
}
|
|
TQByteArray tmpData;
|
|
tmpData.setRawData(charData, len);
|
|
|
|
if (doc.setContent(tmpData))
|
|
{
|
|
rssDoc = Document(doc);
|
|
if (!rssDoc.isValid())
|
|
{
|
|
discoverFeeds(tmpData);
|
|
status = ParseError;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
discoverFeeds(tmpData);
|
|
status = ParseError;
|
|
}
|
|
|
|
tmpData.resetRawData(charData, len);
|
|
} else
|
|
status = RetrieveError;
|
|
|
|
emit loadingComplete(this, rssDoc, status);
|
|
|
|
delete this;
|
|
}
|
|
|
|
void Loader::discoverFeeds(const TQByteArray &data)
|
|
{
|
|
TQString str = TQString(data).simplifyWhiteSpace();
|
|
|
|
TQStringList feeds;
|
|
|
|
FeedDetectorEntryList list = FeedDetector::extractFromLinkTags(str);
|
|
|
|
for (FeedDetectorEntryList::ConstIterator it = list.begin(); it != list.end(); ++it)
|
|
{
|
|
feeds += (*it).url();
|
|
}
|
|
|
|
if (list.isEmpty())
|
|
feeds = FeedDetector::extractBruteForce(str);
|
|
|
|
TQString feed = feeds.first();
|
|
TQString host = d->url.host();
|
|
KURL testURL;
|
|
// loop through, prefer feeds on same host
|
|
TQStringList::Iterator end( feeds.end() );
|
|
for ( TQStringList::Iterator it = feeds.begin(); it != end; ++it)
|
|
{
|
|
testURL=*it;
|
|
if (testURL.host() == host)
|
|
{
|
|
feed = *it;
|
|
break;
|
|
}
|
|
}
|
|
|
|
d->discoveredFeedURL = feed.isNull() ? TQString() : FeedDetector::fixRelativeURL(feed, d->url);
|
|
}
|
|
|
|
#include "loader.moc"
|
|
// vim:noet:ts=4
|