Examples of org.zoolu.tools.Parser

org.zoolu.tools.Parser
Class Parser allows the parsing of String objects.
An object Parser is costructed from a String object and provides various methods for parsing the String in a stream oriented manner. The class Parser also collects different static methods for parsing non-pre-associated strings.
Parser uses the following definitions:
```
 
string = any string of chars included between ' ' and '~' 
word = any string of chars without separators 
separators = a vector of chars; e.g. ( ) < > @ , ; : \ " / | [ ] ? = { } HT SP 
alpha = a-z, A-Z 
digit = 0-9 
integer = any digit word parsed by  {@link java.lang.Integer Integer.parseInt(String)}
```


   /** Removes specified parameter (if present) */
   public void removeParameter(String name) {  
     int index = url.indexOf(';');
       if (index < 0) return;
       Parser par = new Parser(url,index);
       while (par.hasMore()) {  
         int begin_param = par.getPos();
         par.skipChar();
         if (par.getWord(SipParser.param_separators).equals(name)) {  
           String top = url.substring(0,begin_param); 
           par.goToSkippingQuoted(';');
           String bottom = "";
           if (par.hasMore()) bottom = url.substring(par.getPos()); 
           url = top.concat(bottom);
           return;
         }
         par.goTo(';');
      }
   }

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   }


   /** Gets list of tokens (as Vector of Strings). */
   public Vector getElements()
   {  Vector elements=new Vector();
      Parser par=new Parser(value);
      char[] delim={ ',' };
      while (par.hasMore())
      {  String elem=par.getWord(delim).trim();
         if (elem!=null && elem.length()>0) elements.addElement(elem);
         par.skipChar();
      } 
      return elements;
   }

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      if (audio_app!=null || video_app!=null)
      {  printLog("DEBUG: media application is already running",LogLevel.HIGH);
         return;
      }
      SessionDescriptor local_sdp=new SessionDescriptor(call.getLocalSessionDescriptor());
      String local_media_address=(new Parser(local_sdp.getConnection().toString())).skipString().skipString().getString();
      int local_audio_port=0;
      int local_video_port=0;
      // parse local sdp
      for (Enumeration e=local_sdp.getMediaDescriptors().elements(); e.hasMoreElements(); )
      {  MediaField media=((MediaDescriptor)e.nextElement()).getMedia();
         if (media.getMedia().equals("audio")) 
            local_audio_port=media.getPort();
         if (media.getMedia().equals("video")) 
            local_video_port=media.getPort();
      }
      // parse remote sdp
      SessionDescriptor remote_sdp=new SessionDescriptor(call.getRemoteSessionDescriptor());
      String remote_media_address=(new Parser(remote_sdp.getConnection().toString())).skipString().skipString().getString();
      int remote_audio_port=0;              
      int remote_video_port=0;              
      for (Enumeration e=remote_sdp.getMediaDescriptors().elements(); e.hasMoreElements(); )
      {  MediaField media=((MediaDescriptor)e.nextElement()).getMedia();
         if (media.getMedia().equals("audio"))

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