stringlist.java

来自「结构非常清晰的SIP协议栈」· Java 代码 · 共 117 行

package local.ua;


import org.zoolu.tools.Configure;
import java.util.Vector;
import java.io.*;


/** Classs StringList handles a vector of Strings.
  * It can be used to load, manage, and save string values. 
  */
public final class StringList extends Configure
{

   /** The list */
   Vector list;

   /** File name */
   String file_name;


   /** Costructs a new StringList from the specified <i>file</i> */
   public StringList(String file)
   {  list=new Vector();
      file_name=file;
      load();
   }
   

   /** Loads list */
   public void load()
   {  loadFile(file_name);
   }

   
   /** Saves list */
   public void save()
   {  saveFile(file_name);
   }


   /** Gets elements */
   public Vector getElements()
   {  return list;
   }


   /** Gets the element at positon i */
   public String elementAt(int i)
   {  return (String)list.elementAt(i);
   }


   /** Inserts element at positon i */
   public void insertElementAt(String elem, int i)
   {  list.insertElementAt(elem,i);
   }


   /** Removes element at positon i */
   public void removeElementAt(int i)
   {  list.removeElementAt(i);
   }


   /** Adds element */
   public void addElement(String elem)
   {  list.addElement(elem);
   }


   /** Whether the element is present */
   public boolean contains(String elem)
   {  return (indexOf(elem)>=0);
   }


   /** Index of the element (if present) */
   public int indexOf(String elem)
   {  return list.indexOf(elem);
   }


   /** Whether an element that containg <i>subelem</i>*/
   /*public boolean containsSubElement(String subelem)
   {  return indexOfSubElement(subelem)>=0;
   }*/


   /** Whether an element that containg <i>subelem</i>*/
   /*public int indexOfSubElement(String subelem)
   {  for (int i=0; i<list.size(); i++) 
      {  String elem=(String)list.elementAt(i);
         int index=elem.indexOf(subelem);
         if (index>=0 && index<elem.length()) return i;
      }
      return -1;
   }*/
   
       
   /** Parses a single line (loaded from the config file) */
   protected void parseLine(String line)
   {  list.addElement(line);
   }


   /** Converts the entire object into lines (to be saved into the config file) */
   protected String toLines()
   {  String str="";
      for (int i=0; i<list.size(); i++)     
      {  String elem=(String)list.elementAt(i);
         str+=elem+"\n";
      }
      return str;
   }   
}