412 lines
7.6 KiB
Java
412 lines
7.6 KiB
Java
/*
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* $Id: AseAwkPanel.java,v 1.2 2007/05/26 10:23:52 bacon Exp $
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*/
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import java.awt.*;
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import java.awt.event.*;
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import java.net.URL;
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import java.io.File;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.StringWriter;
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import java.io.Reader;
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import java.io.Writer;
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import ase.awk.StdAwk;
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import ase.awk.Console;
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public class AseAwkPanel extends Panel
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{
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/* MsgBox taken from http://www.rgagnon.com/javadetails/java-0242.html */
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class MsgBox extends Dialog implements ActionListener
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{
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boolean id = false;
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Button ok,can;
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MsgBox (Frame frame, String msg, boolean okcan)
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{
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super (frame, "Message", true);
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setLayout(new BorderLayout());
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add("Center",new Label(msg));
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addOKCancelPanel(okcan);
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createFrame();
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pack();
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setVisible(true);
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}
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void addOKCancelPanel( boolean okcan )
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{
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Panel p = new Panel();
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p.setLayout(new FlowLayout());
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createOKButton( p );
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if (okcan == true) createCancelButton( p );
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add("South",p);
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}
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void createOKButton(Panel p)
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{
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p.add(ok = new Button("OK"));
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ok.addActionListener(this);
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}
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void createCancelButton(Panel p)
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{
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p.add(can = new Button("Cancel"));
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can.addActionListener(this);
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}
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void createFrame()
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{
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Dimension d = getToolkit().getScreenSize();
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setLocation(d.width/3,d.height/3);
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}
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public void actionPerformed(ActionEvent ae)
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{
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if(ae.getSource() == ok)
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{
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id = true;
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setVisible(false);
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}
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else if(ae.getSource() == can)
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{
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setVisible(false);
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}
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}
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}
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class Awk extends StdAwk
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{
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private AseAwkPanel awkPanel;
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private StringReader srcIn;
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private StringWriter srcOut;
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public Awk (AseAwkPanel awkPanel) throws Exception
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{
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super ();
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this.awkPanel = awkPanel;
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}
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protected int openSource (int mode)
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{
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if (mode == SOURCE_READ)
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{
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srcIn = new StringReader (awkPanel.getSourceInput());
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return 1;
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}
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else if (mode == SOURCE_WRITE)
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{
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srcOut = new StringWriter ();
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return 1;
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}
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return -1;
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}
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protected int closeSource (int mode)
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{
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if (mode == SOURCE_READ)
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{
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srcIn.close ();
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return 0;
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}
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else if (mode == SOURCE_WRITE)
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{
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awkPanel.setSourceOutput (srcOut.toString());
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try { srcOut.close (); }
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catch (IOException e) { return -1; }
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return 0;
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}
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return -1;
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}
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protected int readSource (char[] buf, int len)
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{
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try
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{
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int n = srcIn.read (buf, 0, len);
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if (n == -1) n = 0;
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return n;
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}
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catch (IOException e) { return -1; }
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}
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protected int writeSource (char[] buf, int len)
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{
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srcOut.write (buf, 0, len);
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return len;
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}
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protected int openConsole (Console con)
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{
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int mode = con.getMode ();
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if (mode == Console.MODE_READ)
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{
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con.setHandle (new StringReader (awkPanel.getConsoleInput()));
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return 1;
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}
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else if (mode == Console.MODE_WRITE)
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{
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con.setHandle (new StringWriter ());
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return 1;
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}
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return -1;
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}
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protected int closeConsole (Console con)
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{
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int mode = con.getMode ();
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if (mode == Console.MODE_READ)
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{
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Reader rd = (Reader)con.getHandle();
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try { rd.close (); }
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catch (IOException e) { return -1; }
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return 0;
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}
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else if (mode == Console.MODE_WRITE)
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{
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Writer wr = (Writer)con.getHandle();
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awkPanel.setConsoleOutput (wr.toString());
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try { wr.close (); }
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catch (IOException e) { return -1; }
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return 0;
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}
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return -1;
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}
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protected int readConsole (Console con, char[] buf, int len)
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{
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int mode = con.getMode ();
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if (mode == Console.MODE_READ)
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{
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Reader rd = (Reader)con.getHandle();
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try
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{
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int n = rd.read (buf, 0, len);
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if (n == -1) n = 0;
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return n;
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}
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catch (IOException e) { return -1; }
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}
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return -1;
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}
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protected int writeConsole (Console con, char[] buf, int len)
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{
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int mode = con.getMode ();
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if (mode == Console.MODE_WRITE)
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{
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Writer wr = (Writer)con.getHandle();
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try { wr.write (buf, 0, len); }
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catch (IOException e) { return -1; }
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return len;
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}
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return -1;
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}
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protected int flushConsole (Console con)
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{
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int mode = con.getMode ();
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if (mode == Console.MODE_WRITE)
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{
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return 0;
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}
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return -1;
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}
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protected int nextConsole (Console con)
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{
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int mode = con.getMode ();
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if (mode == Console.MODE_READ)
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{
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return 0;
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}
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else if (mode == Console.MODE_WRITE)
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{
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return 0;
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}
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return -1;
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}
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}
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private TextArea srcIn;
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private TextArea srcOut;
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private TextArea conIn;
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private TextArea conOut;
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private TextField jniLib;
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private boolean jniLibLoaded = false;
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public AseAwkPanel ()
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{
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jniLib = new TextField ();
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srcIn = new TextArea ();
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srcOut = new TextArea ();
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conIn = new TextArea ();
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conOut = new TextArea ();
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Button runBtn = new Button ("Run Awk");
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runBtn.addActionListener (new ActionListener ()
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{
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public void actionPerformed (ActionEvent e)
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{
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runAwk ();
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}
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});
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Panel topPanel = new Panel ();
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BorderLayout topPanelLayout = new BorderLayout ();
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topPanel.setLayout (topPanelLayout);
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topPanelLayout.setHgap (2);
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topPanelLayout.setVgap (2);
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topPanel.add (new Label ("JNI Library: "), BorderLayout.WEST);
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topPanel.add (jniLib, BorderLayout.CENTER);
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Panel centerPanel = new Panel ();
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GridLayout centerPanelLayout = new GridLayout (2, 2);
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centerPanel.setLayout (centerPanelLayout);
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centerPanelLayout.setHgap (2);
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centerPanelLayout.setVgap (2);
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centerPanel.add (srcIn);
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centerPanel.add (srcOut);
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centerPanel.add (conIn);
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centerPanel.add (conOut);
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BorderLayout mainLayout = new BorderLayout ();
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mainLayout.setHgap (2);
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mainLayout.setVgap (2);
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setLayout (mainLayout);
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add (topPanel, BorderLayout.NORTH);
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add (centerPanel, BorderLayout.CENTER);
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add (runBtn, BorderLayout.SOUTH);
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URL url = this.getClass().getResource (
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this.getClass().getName() + ".class");
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File file = new File (url.getFile());
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String osname = System.getProperty ("os.name").toLowerCase();
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String aseBase = file.getParentFile().getParentFile().getParent();
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if (osname.startsWith ("windows"))
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{
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String path = aseBase + "\\lib\\aseawk_jni.dll";
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jniLib.setText (path.substring(6));
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}
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else if (osname.startsWith ("mac"))
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{
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String path = aseBase + "/lib/.libs/libaseawk_jni.dylib";
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jniLib.setText (path.substring(5));
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}
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else
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{
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String path = aseBase + "/lib/.libs/libaseawk_jni.so";
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jniLib.setText (path.substring(5));
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}
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}
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public String getSourceInput ()
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{
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return srcIn.getText ();
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}
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public void setSourceOutput (String output)
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{
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srcOut.setText (output);
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}
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public String getConsoleInput ()
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{
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return conIn.getText ();
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}
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public void setConsoleOutput (String output)
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{
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conOut.setText (output);
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}
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private void runAwk ()
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{
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Awk awk = null;
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if (!jniLibLoaded)
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{
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try
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{
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System.load (jniLib.getText());
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jniLib.setEnabled (false);
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jniLibLoaded = true;
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}
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catch (UnsatisfiedLinkError e)
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{
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showMessage ("Cannot load library - " + e.getMessage());
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return;
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}
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catch (Exception e)
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{
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showMessage ("Cannot load library - " + e.getMessage());
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return;
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}
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}
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try
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{
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try
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{
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awk = new Awk (this);
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}
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catch (Exception e)
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{
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showMessage ("Cannot instantiate awk - " + e.getMessage());
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return;
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}
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awk.parse ();
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awk.run ();
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}
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catch (ase.awk.Exception e)
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{
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showMessage ("An exception occurred - " + e.getMessage());
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return;
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}
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finally
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{
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if (awk != null) awk.close ();
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}
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}
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private void showMessage (String msg)
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{
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Frame tmp = new Frame ("");
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MsgBox message = new MsgBox (tmp, msg, false);
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requestFocus ();
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message.dispose ();
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tmp.dispose ();
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}
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}
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