newsreader.cpp

this program is Newsreader using RSS (XML) base on Qt app

   // if ( !News_listView1->firstChild() )
   //     return; 
    
    QFile f( "Store.txt" );
    if ( !f.open(IO_WriteOnly | IO_Append) )
        return;

    QTextStream t( &f );
    t.setEncoding(QTextStream::UnicodeUTF8);
    for(int i = 0 ; i <= 50; i++){News_progressBar2->setProgress(i);} 
    QListViewItemIterator it( News_listView1 );
    while ( it.current() ) {
        for ( unsigned int i = 0; i < 3; i++ ){
	     if ( it.current()->isSelected() )
	      {
               t << it.current()->text( i );
               if(i != 2)
			t << "^";
               if(i == 2)
                    t << "\n";
              }
	  }
        ++it;
     }

    f.close();
	for(int i = 50 ; i <= 100; i++){News_progressBar2->setProgress(i);} 
}

void NewsReader::ShowNewsContent() //뉴스 내용 보여주기 위한 함수
{
	Browser_textEdit1->setText("");
	BrowserList->show();
	///////////선택된 아이템의 값을 가져오는 부분//////////
  /*    QListViewItemIterator it( News_listView1 );

      while ( it.current() ) {         
	       if ( it.current()->isSelected() )
	        {
                 Backup[1]=it.current()->text(1);  
	          break; 
                }  
          ++it;
       }*/
 	//DirectoryView dv = new DirectoryView(News_listView1);
	Backup[1] = News_listView1->currentItem()->text(1);
	Backup[3] = News_listView1->currentItem()->text(0);
       ////////////////////////////////////////////////////////
       QUrl url(Backup[1]);
	http->setHost(url.host(), (url.port() != -1)?url.port():80);
	http->get(url.toString());
	//usleep(7000);   
	for(int i = 0 ; i <= 30; i++)
	{
		Browser_progressBar2->setProgress(i);
	}	
	browserint = true;
	connect(http, SIGNAL(done(bool)),this,SLOT(loadDone(bool)));

}

void NewsReader::ShowNewsContent1() //보관함의 내용을 보여주기 위한 함수
{
	Browser_textEdit1->setText("");
	BrowserList->show();
	///////////선택된 아이템의 값을 가져오는 부분//////////
   //   QListViewItemIterator it( Store_listView1 );

//      while ( it.current() ) {         
//	       if ( it.current()->isSelected() )
//	        {
//                 Backup[1]=it.current()->text(1);  
//	          break; 
//                }  
//         ++it;
//       }
	Backup[1] = Store_listView1->currentItem()->text(1);
	Backup[3] = Store_listView1->currentItem()->text(0);
       ////////////////////////////////////////////////////////
	//QMessageBox::critical( 0,tr( "Critical Error" ),tr( "Cannot open file %1" ).arg( Backup[1] ) );
       QUrl url(Backup[1]);
	http->setHost(url.host(), (url.port() != -1)?url.port():80);
	http->get(url.toString());
	//usleep(7000); 
	for(int i = 0 ; i <= 30; i++)
	{
		Browser_progressBar2->setProgress(i);
	}  
	browserint = true;
	connect(http, SIGNAL(done(bool)),this,SLOT(loadDone(bool)));
}

int NewsReader::loadDone(bool error)
{
	QString Temp = toUniString(http->readAll());
	
	int a;
	int b;	
	a = Temp.findRev("BODY START");
	b = Temp.findRev("BODY END");
	if( a == -1 || b == -1)
	{
		//connect(http, SIGNAL(done(bool)),this,SLOT(loadDone(bool)));
		for(int i = 50 ; i <= 100; i++)
		{
			Browser_progressBar2->setProgress(i);
		}
		return 0;
	}else{
		LastTemp = Temp.mid( a+14 , b-a-14 );

		////////////////////////test 
		//QString c = QString("%d Number %d %d");
		//c.arg(a);
		//c.arg(b);
		/////////////////////////////////end test
		//// to search is failed  
		for(int i = 30 ; i <= 50; i++)
		{
			Browser_progressBar2->setProgress(i);
		}
	


		QString imgstr = LastTemp;
		int imga;
		int imgb;
		for(int cnt = 0 ; cnt <= 100; cnt++){
			/////////////////image path parsing
			imga = imgstr.find("src=");
			imgb = imgstr.find(QRegExp("jpg|gif"));
			if(imga == -1 || imgb == -1) break;
			QString imgpath = imgstr.mid(imga+4,imgb-imga-1);
			imgstr = imgstr.mid(imgb+4,imgstr.length() - imgb-4);
			
			QUrl imgurl(imgpath);
			//Browser_textEdit1->append(imgpath);
			
			/////////////////image download
			QFileInfo fileInfo(imgurl.path());
			QString fileName = fileInfo.fileName();
			
	/*
			QFile * file = new QFile(fileName);

			http->setHost(imgurl.host(), imgurl.port() != -1 ? imgurl.port() : 80);
	
		    	http->get(imgurl.path(),file);
	*/
			
			if (browserint == true)
			{
				QUrlOperator *op;
				op = new QUrlOperator();
				op->copy( QString(imgpath), "./" );	
				connect(op,SIGNAL(finished(QNetworkOperation*)),this,SLOT(slotFinished(QNetworkOperation*)));
			}
			QMimeSourceFactory::defaultFactory()->setImage( fileName, QImage(fileName) );
			LastTemp.replace(imgpath,"\"" + fileName + "\"" );
			//QMimeSourceFactory::defaultFactory()->setImage( fileName, QImage(fileName) );
		}
		for(int i = 50 ; i <= 80; i++)
		{
			Browser_progressBar2->setProgress(i);
		}
		//QMessageBox::information(this,"Information",list[0]);

	    	Browser_textEdit1->setText("<html><body><center><b>[" + Backup[3]+"]</b></center><br>" + LastTemp + "</body></html>" );
		for(int i = 80 ; i <= 100; i++)
		{
			Browser_progressBar2->setProgress(i);
		}

	}
	
	return 0;
}
void NewsReader::slotFinished(QNetworkOperation* pOp)
{
         if(!pOp)
                 return;

         if(pOp && pOp->state() == QNetworkProtocol::StFailed)
         {
                 QMessageBox::warning(0, "Network Operation", "Failed to retrieve page");
         }
         else
         {
			//QMessageBox::warning(0, "Network Operation", "Failed to retrieve page");
		       QUrl url(Backup[1]);
			http->setHost(url.host(), (url.port() != -1)?url.port():80);
			http->get(url.toString());
			//usleep(7000); 
			for(int i = 0 ; i <= 30; i++)
			{
				Browser_progressBar2->setProgress(i);
			}  
			browserint = false;
			connect(http, SIGNAL(done(bool)),this,SLOT(loadDone(bool)));
                 
         }
}
void NewsReader::BrowserZoomin()
{
	Browser_textEdit1->zoomIn();
}
void NewsReader::BrowserZoomout()
{
	Browser_textEdit1->zoomOut();
}

void NewsReader::ShowNewsTitle()
{
    NewsList->show();  
    News_listView1->clear(); 
    QUrl url(temp[Update_listBox2->currentItem()]);
	
    QFileInfo fileInfo(url.path());

   QString fileName = fileInfo.fileName();


    QFile opmlFile( fileName );
    if ( !opmlFile.open( IO_ReadOnly ) ) {
	QMessageBox::critical( 0,
		tr( "Critical Error" ),
		tr( "Cannot open file %1" ).arg( fileName ) );
	return;
    }
    if ( !domTree.setContent( &opmlFile ) ) {
	QMessageBox::critical( 0,
	tr( "Critical Error" ),
		tr( "Parsing error for file %1" ).arg( fileName ) );
	opmlFile.close();
	return;
    }
    opmlFile.close();
    // get the header information from the DOM
    QDomElement root = domTree.documentElement();
    QDomNode node;
    // create the tree view out of the DOM  channel
    node = root.firstChild();
    while ( !node.isNull() ) {
	if ( node.isElement() && node.nodeName() == "channel" ) {
	    QDomElement channel = node.toElement();
		QDomNode node1 = channel.firstChild();
		while ( !node1.isNull() ) {
			if ( node1.isElement() && node1.nodeName() == "item" ) {
			    QDomElement channel1 = node1.toElement();
				//QMessageBox::information(this,"Information",channel.tagName());
				ShowNewsSub(channel1 );
			}
			node1 = node1.nextSibling();
		}
		
	}
	node = node.nextSibling();
    }

}

void NewsReader::ShowNewsSub(const QDomElement &parentElement)
{
    QListViewItem *thisItem = 0;
   
    QDomNode node = parentElement.firstChild();
    thisItem = new QListViewItem( News_listView1, thisItem );
	while ( !node.isNull() ) {
	if ( node.isElement() && node.nodeName() == "title" ) {
		QDomText textChild = node.firstChild().toText();
          // thisItem = new QListViewItem(listview1, textChild.nodeValue(), "1");
	       thisItem->setText( 0,  textChild.nodeValue());
	}
	if ( node.isElement() && node.nodeName() == "link" ) {
	   	QDomText textChild = node.firstChild().toText();
		thisItem->setText( 1, textChild.nodeValue() );
	}
	if ( node.isElement() && node.nodeName() == "pubDate" ) {
	   	QDomText textChild = node.firstChild().toText();
		thisItem->setText( 2, textChild.nodeValue() );
	}

	node = node.nextSibling();
    }
}


void NewsReader::pressXmlUpdate()
{
	QUrlOperator *op;
	
	for(int i=0; i<=15; i++)
	{		
		 op = new QUrlOperator();
		 op->copy( QString(temp[i]), "./" );
             Update_progressBar2->setProgress(i*4);
	}
 	Update_progressBar2->setProgress(100);
}

void NewsReader::UpdateShow()
{
	MainFrame->hide();
	BrowserList->hide();
      NewsList->hide();
      UpdateList->show();
	StoreList->hide();
       Update_listBox2->clear();
	QString fileName = "xml/list.xml";
	QFile opmlFile( fileName );
	if ( !opmlFile.open( IO_ReadOnly ) ) {
		QMessageBox::critical( 0,
			tr( "Critical Error" ),
			tr( "Cannot open file %1" ).arg( fileName ) );
		return;
	}
	if ( !domTree.setContent( &opmlFile ) ) {
		QMessageBox::critical( 0,
			tr( "Critical Error" ),
			tr( "Parsing error for file %1" ).arg( fileName ) );
		opmlFile.close();
		return;
	}
	
	    opmlFile.close();
	    domTree.setContent(&opmlFile);
	    QDomElement root = domTree.documentElement();
	    QDomNode node; 

	    node = root.firstChild();
	    while ( !node.isNull() ) {
		if ( node.isElement() && node.nodeName() == "body" ) {
		    QDomElement body = node.toElement();
		    buildTree(body);
		    break;
		}
		node = node.nextSibling();
	    }

}

void NewsReader::NewsShow()
{
	MainFrame->hide();
	BrowserList->hide();
      NewsList->show();
      UpdateList->hide();
	StoreList->hide();
}

void NewsReader::StoreShow()
{
	MainFrame->hide();
	BrowserList->hide();
      NewsList->hide();
      UpdateList->hide();
	StoreList->show();
	browserint = true;
}

void NewsReader::BrowserShow()
{
	MainFrame->hide();
	BrowserList->show();
      NewsList->hide();
      UpdateList->hide();
	StoreList->hide();
}

QString toUniString(QString str)
{
    QTextCodec * codec = QTextCodec::codecForName("eucKR");
    QString localeStr = codec->toUnicode(str);

    return localeStr;
}


void NewsReader::buildTree(const QDomElement &parentElement )
{
    int i = 0;    

    QDomNode node = parentElement.firstChild();
    while ( !node.isNull() ) {
        if ( node.isElement() && node.nodeName() == "outline" ) {    
            Update_listBox2->insertItem(kor(node.toElement().attribute("title")),i);
	      temp[i] = node.toElement().attribute("link");
            buildTree(node.toElement());
        }

        node = node.nextSibling();
      i++;
    }
}

int main(int argc, char ** argv)
{
    QApplication QApp(argc, argv);
    QFont font("back", 15);
    QApp.setFont(font);
    NewsReader News;
    QApp.setMainWidget(&News);
    News.show();
	
    return QApp.exec();
}