[Mathlib-commitlog] SF.net SVN: mathlib:[583] JMathLib/trunk/src/jmathlib/ui

[<st_...@us...>]

Revision: 583
          http://mathlib.svn.sourceforge.net/mathlib/?rev=583&view=rev
Author:   st_mueller
Date:     2008-12-30 21:36:17 +0000 (Tue, 30 Dec 2008)

Log Message:
-----------
buggy

Added Paths:
-----------
    JMathLib/trunk/src/jmathlib/ui/text/
    JMathLib/trunk/src/jmathlib/ui/text/TextUI.java

Added: JMathLib/trunk/src/jmathlib/ui/text/TextUI.java
===================================================================
--- JMathLib/trunk/src/jmathlib/ui/text/TextUI.java	                        (rev 0)
+++ JMathLib/trunk/src/jmathlib/ui/text/TextUI.java	2008-12-30 21:36:17 UTC (rev 583)
@@ -0,0 +1,139 @@
+package jmathlib.ui.text;
+
+import jmathlib.core.interpreter.*;
+import jmathlib.core.interfaces.RemoteAccesible;
+import jmathlib.ui.common.Console;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.applet.*;
+import java.io.*;
+import java.util.Vector;
+
+public class textUI implements RemoteAccesible, MathLibOutput
+{
+    /**store whether executing lines or entering a function def*/
+    private boolean interactiveMode;
+    
+    /**store the current function definition*/
+    private String functionCode;
+
+    /**stores whether the program is closing*/
+    private boolean exiting;
+
+    /**store a reference to the interpreter object*/
+    private Interpreter interpreter;
+
+    /**stores the input stream*/
+    private DataInputStream input;
+    
+    public textUI()
+    {
+        interactiveMode = true;
+        functionCode = "";
+        exiting = false;
+        interpreter = new Interpreter(true, null);
+        interpreter.setOutputPanel((MathLibOutput)this);
+        interpreter.setDebug(false);
+        input = new DataInputStream(System.in);
+    }
+
+    public void run()
+    {
+        displayPrompt();
+        while(!exiting)
+        {
+            String command = readLine();
+            interpretLine(command);    
+        }
+    }
+
+    public static void main(String[] args)
+    {
+        MathLibTUI tui = new MathLibTUI();
+        if(args.length == 0)
+        {            
+            tui.run();
+        }
+        else
+        {
+            String filename = args[0];
+            tui.interpretLine(filename);
+        }
+    }
+    
+    public void close()
+    {
+        exiting = true;
+    }
+    
+    public void interpretLine(String line)
+    {
+    	if(interactiveMode)
+    	{        
+		//check to see if this is the beginning of a user function
+        	if(line.length() > 7 && line.substring(0, 8).equalsIgnoreCase("FUNCTION"))
+        	{
+        		functionCode = line;
+        		interactiveMode = false;	
+		
+				displayPrompt();
+        	}
+        	else
+        	{
+                if(line.equalsIgnoreCase("exit") || line.equalsIgnoreCase("quit"))
+                {
+                    close();
+                }
+                else
+                {
+                    String answerString = interpreter.executeExpression(line);
+            
+                    displayText(answerString);
+                    displayPrompt();		        
+                }
+	        }
+	   	}
+	   	else
+	   	{   		
+	   		if(line.equalsIgnoreCase("END"))
+	   		{
+		   		String answerString = "";
+
+	   			//process the function
+	   			answerString = interpreter.readFunction(functionCode, true, false);
+	   			
+	   			interactiveMode = true;
+
+		        displayText(answerString);
+	   		}		    
+	   		else
+		   		functionCode += line;
+	   		
+	        displayPrompt();
+	   	}
+    }
+    
+    public void displayText(String text)
+    {
+        System.out.println(text);
+    }    
+    
+    public void displayPrompt()
+    {
+        System.out.print("> ");
+    }        
+    
+    private String readLine()
+    {
+        try
+        {
+            return input.readLine();
+        }
+        catch(IOException error)
+        {
+            System.out.println("IO Exception");
+        }
+        return "";
+    }
+}


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