package net.sf.jabref.external;
import java.net.URL;
import java.net.MalformedURLException;
import java.io.IOException;
/**
* FullTextFinder implementation that attempts to find PDF url from a Sciencedirect article page.
*/
public class ScienceDirectPdfDownload implements FullTextFinder {
//private static final String BASE_URL = "http://www.sciencedirect.com";
public ScienceDirectPdfDownload() {
}
public boolean supportsSite(URL url) {
return url.getHost().toLowerCase().indexOf("www.sciencedirect.com") != -1;
}
public URL findFullTextURL(URL url) throws IOException {
String pageSource = FindFullText.loadPage(url);
//System.out.println(pageSource);
int index = pageSource.indexOf("PDF (");
//System.out.println(index);
if (index > -1) {
String leading = pageSource.substring(0, index);
//System.out.println(leading.toLowerCase());
index = leading.toLowerCase().lastIndexOf("<a href=");
//System.out.println(index);
if ((index > -1) && (index+9 < leading.length())) {
int endIndex = leading.indexOf("\"", index+9);
try {
return new URL(/*BASE_URL+*/leading.substring(index+9, endIndex));
} catch (MalformedURLException e) {
return null;
}
}
return null;
} else
return null;
}
}