diff options
Diffstat (limited to 'utils/src/main/java/at/gv/egiz/bku/utils/urldereferencer/URIResolverAdapter.java')
-rw-r--r-- | utils/src/main/java/at/gv/egiz/bku/utils/urldereferencer/URIResolverAdapter.java | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/utils/src/main/java/at/gv/egiz/bku/utils/urldereferencer/URIResolverAdapter.java b/utils/src/main/java/at/gv/egiz/bku/utils/urldereferencer/URIResolverAdapter.java new file mode 100644 index 00000000..2d11010e --- /dev/null +++ b/utils/src/main/java/at/gv/egiz/bku/utils/urldereferencer/URIResolverAdapter.java @@ -0,0 +1,96 @@ +/* +* Copyright 2008 Federal Chancellery Austria and +* Graz University of Technology +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ +package at.gv.egiz.bku.utils.urldereferencer;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+
+import javax.xml.transform.Source;
+import javax.xml.transform.TransformerException;
+import javax.xml.transform.URIResolver;
+import javax.xml.transform.stream.StreamSource;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ * Adapter to make the Urldereferencer work as URIResolver for
+ * Stylesheettransforms.
+ *
+ * @author wbauer
+ *
+ */
+public class URIResolverAdapter implements URIResolver {
+
+ private static Log log = LogFactory.getLog(URIResolverAdapter.class);
+
+ private URLDereferencer urlDereferencer;
+ private URLDereferencerContext ctx;
+
+ /**
+ *
+ * @param deferecencer
+ * must not be null
+ * @param ctx may be null
+ */
+ public URIResolverAdapter(URLDereferencer deferecencer,
+ URLDereferencerContext ctx) {
+ if (deferecencer == null) {
+ throw new NullPointerException("Urlderefencer must not be set to null");
+ }
+ this.urlDereferencer = deferecencer;
+ this.ctx = ctx;
+ }
+
+ @Override
+ public Source resolve(String href, String base) throws TransformerException {
+ log.debug("Resolving href: "+href+" base: "+base);
+ try {
+ URI baseUri = null;
+ URI hrefUri = new URI(href);
+ if (base != null) {
+ baseUri = new URI(base);
+ }
+ URI abs;
+ if (baseUri != null) {
+ abs = baseUri.resolve(hrefUri);
+ } else {
+ abs = hrefUri;
+ }
+ if (!abs.isAbsolute()) {
+ throw new TransformerException("Only absolute URLs are supported");
+ }
+ return new StreamSource(urlDereferencer.dereference(abs.toString(), ctx)
+ .getStream());
+ } catch (URISyntaxException e) {
+ throw new TransformerException("Cannot resolve URI: base:" + base
+ + " href:" + href, e);
+ } catch (IOException iox) {
+ throw new TransformerException("Cannot resolve URI: base:" + base
+ + " href:" + href, iox);
+ }
+ }
+
+ public URLDereferencerContext getCtx() {
+ return ctx;
+ }
+
+ public void setCtx(URLDereferencerContext ctx) {
+ this.ctx = ctx;
+ }
+}
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