public XsltUriResolver(CamelContext context, String location) {
this.context = context;
this.location = location;
if (ResourceHelper.hasScheme(location)) {
baseScheme = ResourceHelper.getScheme(location);
} else {
// default to use classpath
baseScheme = "classpath:";
}
}
@Override
public Source resolve(String href, String base) throws TransformerException {
// supports the empty href
if (ObjectHelper.isEmpty(href)) {
href = location;
}
if (ObjectHelper.isEmpty(href)) {
throw new TransformerException("include href is empty");
}
LOG.trace("Resolving URI with href: {} and base: {}", href, base);
String scheme = ResourceHelper.getScheme(href);
if (scheme != null) {
// need to compact paths for file/classpath as it can be relative paths using .. to go
// backwards
if ("file:".equals(scheme)) {
// compact path use file OS separator
href = FileUtil.compactPath(href);
} else if ("classpath:".equals(scheme)) {
// for classpath always use /
href = FileUtil.compactPath(href, '/');
}
LOG.debug("Resolving URI from {}: {}", scheme, href);
InputStream is;
try {
is = ResourceHelper.resolveMandatoryResourceAsInputStream(context, href);
} catch (IOException e) {
throw new TransformerException(e);
}
return new StreamSource(is);
}
// if href and location is the same, then its the initial resolve
if (href.equals(location)) {
String path = baseScheme + href;
return resolve(path, base);
}
// okay then its relative to the starting location from the XSLT component
String path = FileUtil.onlyPath(location);
if (ObjectHelper.isEmpty(path)) {
path = baseScheme + href;
return resolve(path, base);
} else {
if (ResourceHelper.hasScheme(path)) {
path = path + "/" + href;
} else {
path = baseScheme + path + "/" + href;
}
return resolve(path, base);
}
}