/* * newsengine.cpp * * Copyright (c) 2000, 2001 Frerich Raabe * * 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 "newsengine.h" #include "configiface.h" #include "configaccess.h" #include "xmlnewsaccess.h" #include "newsiconmgr.h" #include #include #include #include #include #include #include Article::Article(NewsSourceBase *parent, const TQString &headline, const KURL &address) : XMLNewsArticle(headline, address), m_parent(parent), m_read(false) { } bool Article::operator==(const Article &other) const { return headline() == other.headline() && address() == other.address(); } void Article::open() { (void) new KRun(address()); m_read = true; } NewsSourceBase::NewsSourceBase(const Data &nsd, ConfigIface *config) : XMLNewsSource(), m_data(nsd), m_icon(TQPixmap()), m_cfg(dynamic_cast(config)), m_newsIconMgr(NewsIconMgr::self()) { connect(this, TQT_SIGNAL(loadComplete(XMLNewsSource *, bool)), TQT_SLOT(slotProcessArticles(XMLNewsSource *, bool))); } void NewsSourceBase::getIcon() { connect(m_newsIconMgr, TQT_SIGNAL(gotIcon(const KURL &, const TQPixmap &)), this, TQT_SLOT(slotGotIcon(const KURL &, const TQPixmap &))); m_newsIconMgr->getIcon( KURL( m_data.icon ) ); } TQString NewsSourceBase::newsSourceName() const { if (m_cfg->customNames() || m_name.isEmpty()) return m_data.name; else return m_name; } TQString NewsSourceBase::subjectText(const Subject subject) { switch (subject) { case Arts: return i18n("Arts"); case Business: return i18n("Business"); case Computers: return i18n("Computers"); case Games: return i18n("Games"); case Health: return i18n("Health"); case Home: return i18n("Home"); case Recreation: return i18n("Recreation"); case Reference: return i18n("Reference"); case Science: return i18n("Science"); case Shopping: return i18n("Shopping"); case Society: return i18n("Society"); case Sports: return i18n("Sports"); case Misc: return i18n("Miscellaneous"); case Magazines: return i18n("Magazines"); default: return i18n("Unknown"); } } void NewsSourceBase::slotProcessArticles(XMLNewsSource *, bool gotEm) { if (!gotEm) { emit invalidInput(this); return; } Article::List oldArticles = m_articles; // Truncate the list of articles if necessary. m_articles.clear(); XMLNewsArticle::List::ConstIterator it = XMLNewsSource::articles().begin(); XMLNewsArticle::List::ConstIterator end = XMLNewsSource::articles().end(); for (; it != end; ++it) m_articles.append(new Article(this, (*it).headline(), (*it).address())); // Fill the list with old articles until maxArticles is reached. if (m_articles.count() < m_data.maxArticles) { Article::List::ConstIterator oldArtIt = oldArticles.begin(); Article::List::ConstIterator oldArtEnd = oldArticles.end(); bool isNewArticle; for (; oldArtIt != oldArtEnd; ++oldArtIt) { isNewArticle = true; Article::List::ConstIterator newArtIt = m_articles.begin(); Article::List::ConstIterator newArtEnd = m_articles.end(); for (; newArtIt != newArtEnd; ++newArtIt) { Article newArt = **newArtIt; Article oldArt = **oldArtIt; if (newArt == oldArt) isNewArticle = false; } if (isNewArticle) m_articles.append(*oldArtIt); if (m_articles.count() == m_data.maxArticles) break; } } else while (m_articles.count() > m_data.maxArticles) m_articles.remove(m_articles.fromLast()); // Copy the read flag of known articles Article::List::ConstIterator oldArtIt = oldArticles.begin(); Article::List::ConstIterator oldArtEnd = oldArticles.end(); for (; oldArtIt != oldArtEnd; ++oldArtIt) { Article::List::Iterator newArtIt = m_articles.begin(); Article::List::Iterator newArtEnd = m_articles.end(); for (; newArtIt != newArtEnd; ++newArtIt) if (**oldArtIt == **newArtIt) (*newArtIt)->setRead((*oldArtIt)->read()); } emit newNewsAvailable(this, oldArticles != m_articles); } Article::Ptr NewsSourceBase::article(const TQString &headline) { Article::List::ConstIterator it = m_articles.begin(); Article::List::ConstIterator end = m_articles.end(); for (; it != end; ++it) if ((*it)->headline() == headline) return *it; return 0L; } void NewsSourceBase::slotGotIcon(const KURL &url, const TQPixmap &pixmap) { if (url.url() == m_data.icon) { m_icon = pixmap; disconnect(m_newsIconMgr, TQT_SIGNAL(gotIcon(const KURL &, const TQPixmap &)), this, TQT_SLOT(slotGotIcon(const KURL &, const TQPixmap &))); } } SourceFileNewsSource::SourceFileNewsSource(const NewsSourceBase::Data &nsd, ConfigIface *config) : NewsSourceBase(nsd, config) { } void SourceFileNewsSource::retrieveNews() { loadFrom(KURL( m_data.sourceFile )); } ProgramNewsSource::ProgramNewsSource(const NewsSourceBase::Data &nsd, ConfigIface *config) : NewsSourceBase(nsd, config), m_program(new KProcess()), m_programOutput(0) { connect(m_program, TQT_SIGNAL(processExited(KProcess *)), TQT_SLOT(slotProgramExited(KProcess *))); connect(m_program, TQT_SIGNAL(receivedStdout(KProcess *, char *, int)), TQT_SLOT(slotGotProgramOutput(KProcess *, char *, int))); m_data.sourceFile = KURL(m_data.sourceFile).encodedPathAndQuery(); } ProgramNewsSource::~ProgramNewsSource() { delete m_program; delete m_programOutput; } void ProgramNewsSource::retrieveNews() { m_programOutput = new QBuffer; m_programOutput->open(IO_WriteOnly); *m_program << m_data.sourceFile; m_program->start(KProcess::NotifyOnExit, KProcess::Stdout); } void ProgramNewsSource::slotGotProgramOutput(KProcess *, char *data, int length) { m_programOutput->writeBlock(data, length); } void ProgramNewsSource::slotProgramExited(KProcess *proc) { bool okSoFar = true; TQString errorMsg; if (!proc->normalExit()) { errorMsg = i18n("

The program '%1' was terminated abnormally.
This can" " happen if it receives the SIGKILL signal.

"); okSoFar = false; } else { ErrorCode error = static_cast(proc->exitStatus()); if (error != NOERR) { errorMsg = errorMessage(error).arg(m_data.sourceFile); okSoFar = false; } } if (!okSoFar) { TQString output = TQString(m_programOutput->buffer()); if (!output.isEmpty()) { output = TQString::fromLatin1("\"") + output + TQString::fromLatin1("\""); errorMsg += i18n("

Program output:
%1
").arg(output); } KMessageBox::detailedError(0, i18n("An error occurred while updating the" " news source '%1'.").arg(newsSourceName()), errorMsg, i18n("KNewsTicker Error")); } processData(m_programOutput->buffer(), okSoFar); delete m_programOutput; m_programOutput = 0; } TQString ProgramNewsSource::errorMessage(const ErrorCode errorCode) { switch (errorCode) { case EPERM: return i18n("The program '%1' could not be started at all."); case ENOENT: return i18n("The program '%1' tried to read or write a file or" " directory which could not be found."); case EIO: return i18n("An error occurred while the program '%1' tried to" " read or write data."); case E2BIG: return i18n("The program '%1' was passed too many arguments." " Please adjust the command line in the configuration dialog."); case ENOEXEC: return i18n("An external system program upon which the" " program '%1' relied could not be executed."); case EACCESS: return i18n("The program '%1' tried to read or write a file or" " directory but lacks the permission to do so."); case ENODEV: return i18n("The program '%1' tried to access a device which" " was not available."); case ENOSPC: return i18n("There is no more space left on the device used by" " the program '%1'."); case EROFS: return i18n("The program '%1' tried to create a temporary file" " on a read only file system."); case ENOSYS: return i18n("The program '%1' tried to call a function which" " is not implemented or attempted to access an external resource which" " does not exist."); case ENODATA: return i18n("The program '%1' was unable to retrieve input data and" " was therefore unable to return any XML data."); case ENONET: return i18n("The program '%1' tried to access a host which is not" " connected to a network."); case EPROTO: return i18n("The program '%1' tried to access a protocol which is not" " implemented."); case EDESTADDRREQ: return i18n("The program '%1' requires you to configure a" " destination address to retrieve data from. Please refer to the" " documentation of the program for information on how to do that."); case ESOCKTNOSUPPORT: return i18n("The program '%1' tried to use a socket" " type which is not supported by this system."); case ENETUNREACH: return i18n("The program '%1' tried to access an unreachable" " network."); case ENETRESET: return i18n("The network the program '%1' was trying to access" " dropped the connection with a reset."); case ECONNRESET: return i18n("The connection of the program '%1' was reset by" " peer."); case ETIMEDOUT: return i18n("The connection the program '%1' was trying to" " establish timed out."); case ECONNREFUSED: return i18n("The connection the program '%1' was trying to" " establish was refused."); case EHOSTDOWN: return i18n("The host the program '%1' was trying to reach is" " down."); case EHOSTUNREACH: return i18n("The host the program '%1' was trying to reach is" " unreachable, no route to host."); case ENOEXECBIT: return i18n("KNewsTicker could not execute the program '%1'" " because its executable bit was not set. You can mark that program as" " executable by executing the following steps:

    " "
  • Open a Konqueror window and browse to the program
  • " "
  • Click on the file with the right mouse button, and select 'Properties'
  • " "
  • Open the 'Permissions' tab and make sure that the box in the column" " 'Exec' and the row 'User' is checked to ensure that the current user" " is allowed to execute that file.
"); case EBADREQ: return i18n("The program '%1' sent a bad request which was not" " understood by the server."); case ENOAUTH: return i18n("The program '%1' failed to issue an authorization for" " an area which needs some form of authorization before it can be" " accessed."); case EMUSTPAY: return i18n("The program '%1' aborted because it could not access" " the data without paying for it."); case EFORBIDDEN: return i18n("The program '%1' tried to access a forbidden" " source."); case ENOTFOUND: return i18n("The program '%1' tried to access data which" " could not be found."); case ETIMEOUT: return i18n("The HTTP request of the program '%1' timed out."); case ESERVERE: return i18n("A server error has been encountered. It is likely" " that you cannot do anything about it."); case EHTTPNOSUP: return i18n("The HTTP protocol version used by the program" " '%1' was not understood by the HTTP server or source."); default: return i18n("KNewsTicker was unable to detect the exact reasons for" " the error."); } } #include "newsengine.moc"