Like Regular Expression Demo in a TextField : Basic Regular Expressions « Regular Expressions « Java
Like Regular Expression Demo in a TextField
/*
* Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
* All rights reserved. Software written by Ian F. Darwin and others.
* $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
* cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
* pioneering role in inventing and promulgating (and standardizing) the Java
* language and environment is gratefully acknowledged.
*
* The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
* inventing predecessor languages C and C++ is also gratefully acknowledged.
*/
import java.awt.BorderLayout;
import java.awt.Container;
import javax.swing.JFrame;
import javax.swing.JTextArea;
/* Like REDemo but shows the groups in a TextField
*/
public class REDemo2 extends REDemo {
JTextArea logTextArea;
/** "main program" method - construct and show */
public static void main(String[] av) {
JFrame f = new JFrame("REDemo2");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
REDemo2 comp = new REDemo2();
Container cp = f.getContentPane();
cp.add(comp, BorderLayout.NORTH);
cp.add(comp.logTextArea, BorderLayout.SOUTH);
f.pack();
f.setVisible(true);
}
REDemo2() {
super();
logTextArea = new JTextArea(10,40);
add(logTextArea);
}
protected boolean tryMatch() {
if (pattern == null) {
return false;
}
logTextArea.setText("");
if (!super.tryMatch()) {
return false;
}
int n = matcher.groupCount();
matcher.reset(stringTF.getText());
if (match.isSelected() && matcher.matches()) {
logTextArea.setText(matcher.group());
return true;
}
if (find.isSelected() && matcher.find()) {
logTextArea.setText(matcher.group());
return true;
}
if (findAll.isSelected()) {
int i;
for (i = 0; i < n; i++) {
matcher.find();
logTextArea.append(i + ": " + matcher.group(i) + "\n");
}
if (i > 0) {
return true;
}
}
setMatches(false);
return false;
}
}
