file URLs again

David Megginson (ak117@freenet.carleton.ca)
Sat, 7 Feb 1998 16:49:14 -0500


Tim Bray writes:

> Hi, I've been getting a bit behind... did this group in its
> collective wisdom come up with a snippet of Java that makes
> a really good and sincere effort to open a URL that looks
> like "spec.dtd" and works reliably on MS & other OS's, with
> more than one JVM? I seem to recall seeing one go by, but
> can't find it. -Tim

This one's from the latest SAXDemo.java, incorporating modifications
suggested by James Clark:

/**
* If a URL is relative, make it absolute against the current directory.
*/
private static String makeAbsoluteURL (String url)
throws java.net.MalformedURLException
{
URL baseURL;

String currentDirectory = System.getProperty("user.dir");
String fileSep = System.getProperty("file.separator");
String file = currentDirectory.replace(fileSep.charAt(0), '/') + '/';

if (file.charAt(0) != '/') {
file = "/" + file;
}
baseURL = new URL("file", null, file);

return new URL(baseURL, url).toString();
}

All the best,

David

-- 
David Megginson                 ak117@freenet.carleton.ca
Microstar Software Ltd.         dmeggins@microstar.com
      http://home.sprynet.com/sprynet/dmeggins/

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