Get list of APPLET tags in one HTML file
/*
* 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 $
*
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* 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
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* 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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Vector;
/**
* Get list of APPLET tags in one HTML file.
*
* @author Ian Darwin, Darwin Open Systems, www.darwinsys.com. Routine "readTag"
* shamelessly stolen from Elliott Rusty Harold's "ImageSizer" program.
*/
public class AppletFinder {
public static void main(String[] av) {
String[] tags = new AppletFinder().doPage(av[0]);
for (int i = 0; i < tags.length; i++)
System.out.println("APPLET: " + i + " " + tags[i]);
}
public String[] doPage(String pageURL) {
String result[] = null;
URL root;
if (pageURL != null) {
//Open the URL for reading
try {
if (pageURL.indexOf(":") != -1) {
root = new URL(pageURL);
} else {
root = new URL("http://" + pageURL);
}
result = findApplets(root);
} catch (MalformedURLException e) {
System.err.println(pageURL + " is not a parseable URL");
System.err.println(e);
}
}
return result;
}
public String[] findApplets(URL u) {
BufferedReader inrdr = null;
Vector v = new Vector();
char thisChar = 0;
try {
inrdr = new BufferedReader(new InputStreamReader(u.openStream()));
int i;
while ((i = inrdr.read()) != -1) {
thisChar = (char) i;
if (thisChar == '<') {
String tag = readTag(inrdr);
// System.out.println("TAG: " + tag);
if (tag.toUpperCase().startsWith("<APPLET"))
v.addElement(tag);
}
}
inrdr.close();
} catch (IOException e) {
System.err.println("Error reading from main URL: " + e);
}
String applets[] = new String[v.size()];
v.copyInto(applets);
return applets;
}
public String readTag(BufferedReader is) {
StringBuffer theTag = new StringBuffer("<");
char theChar = '<';
try {
while (theChar != '>' && ((theChar = (char) is.read()) != -1)) {
theTag.append(theChar);
} // end while
} // end try
catch (IOException e) {
System.err.println(e);
}
return theTag.toString();
}
}
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