1 files changed, 71 insertions, 0 deletions
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/binding/FormDataURLDereferencer.java b/bkucommon/src/main/java/at/gv/egiz/bku/binding/FormDataURLDereferencer.java
new file mode 100644
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--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/binding/FormDataURLDereferencer.java
@@ -0,0 +1,71 @@
+/*
+* Copyright 2009 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.binding;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.egiz.bku.utils.urldereferencer.StreamData;
+import at.gv.egiz.bku.utils.urldereferencer.URLDereferencer;
+
+public class FormDataURLDereferencer implements URLDereferencer {
+  
+  public final static String PROTOCOL = "formdata";
+  
+  private final Logger log = LoggerFactory.getLogger(FormDataURLDereferencer.class);
+
+  private URLDereferencer urlDereferencer;
+  
+  private FormDataURLSupplier formDataURLSupplier;
+  
+  public FormDataURLDereferencer(URLDereferencer urlDereferencer, FormDataURLSupplier formDataURLSupplier) {
+    this.urlDereferencer = urlDereferencer;
+    this.formDataURLSupplier = formDataURLSupplier;
+  }
+
+  @Override
+  public StreamData dereference(String url)
+      throws IOException {
+    
+    String urlString = url.toLowerCase().trim();
+    if (urlString.startsWith(PROTOCOL)) {
+      log.debug("Requested to dereference a formdata url.");
+      return dereferenceFormData(url);
+    } else {
+      return urlDereferencer.dereference(url);
+    }
+    
+  }
+
+  protected StreamData dereferenceFormData(String url) throws IOException {
+    log.debug("Dereferencing formdata url: {}.", url);
+    String[] parts = url.split(":", 2);
+
+    String contentType = formDataURLSupplier.getFormDataContentType(parts[1]);
+    InputStream is = formDataURLSupplier.getFormData(parts[1]);
+    if (is != null) {
+      return new StreamData(url, contentType, is);
+    }
+    throw new IOException("Cannot dereference URL: '" + url + "' not found.");
+  }
+
+  
+}