/** Parses the given InputSource into a Document. */
private Document parseInputSource(InputSource s) throws SAXException, IOException {
db.setEntityResolver(new JstlEntityResolver(pageContext));
// normalize URIs so they can be processed consistently by resolver
if (systemId == null) {
s.setSystemId("jstl:");
} else if (ImportSupport.isAbsoluteUrl(systemId)) {
s.setSystemId(systemId);
} else {
s.setSystemId("jstl:" + systemId);
}
return db.parse(s);
}
public InputSource resolveEntity(String publicId, String systemId)
throws FileNotFoundException {
// pass if we don't have a systemId
if (systemId == null) {
return null;
}
// strip leading "jstl:" off URL if applicable
if (systemId.startsWith("jstl:")) {
systemId = systemId.substring(5);
}
// we're only concerned with relative URLs
if (ImportSupport.isAbsoluteUrl(systemId)) {
return null;
}
// for relative URLs, load and wrap the resource.
// don't bother checking for 'null' since we specifically want
// the parser to fail if the resource doesn't exist
InputStream s;
if (systemId.startsWith("/")) {
s = ctx.getServletContext().getResourceAsStream(systemId);
if (s == null) {
throw new FileNotFoundException(
Resources.getMessage("UNABLE_TO_RESOLVE_ENTITY", systemId));
}
} else {
String pagePath = ((HttpServletRequest) ctx.getRequest()).getServletPath();
String basePath = pagePath.substring(0, pagePath.lastIndexOf("/"));
s = ctx.getServletContext().getResourceAsStream(basePath + "/" + systemId);
if (s == null) {
throw new FileNotFoundException(
Resources.getMessage("UNABLE_TO_RESOLVE_ENTITY", systemId));
}
}
return new InputSource(s);
}
