SAK-44880: SAMIGO - Error on log when printing PDF assessment that co…

…ntains a BASE64 image (sakaiproject#8950)

samigo/samigo-app/src/java/org/sakaiproject/tool/assessment/pdf/HTMLWorker.java

@@ -24,14 +24,17 @@
 import java.util.ArrayList;
 import java.util.HashMap;
 
-import com.lowagie.text.DocListener;
-import com.lowagie.text.html.simpleparser.StyleSheet;
-import lombok.extern.slf4j.Slf4j;
-
 import org.sakaiproject.component.cover.ServerConfigurationService;
 import org.sakaiproject.content.api.ContentResource;
 import org.sakaiproject.content.cover.ContentHostingService;
 
+import com.lowagie.text.DocListener;
+import com.lowagie.text.Image;
+import com.lowagie.text.html.simpleparser.StyleSheet;
+import com.lowagie.text.pdf.codec.Base64;
+
+import lombok.extern.slf4j.Slf4j;
+
 /**
  * 
  * @author Joshua Ryan <a href="mailto:[email protected]">[email protected]</a>
@@ -176,6 +179,23 @@ else if (src.startsWith("temp://")) {
 					log.error(e.getMessage(), e);
 				}
 			}
+			else if (src.startsWith("data:image/")) {
+				Image img = null;
+				final String base64Data = src.substring(src.indexOf(",") + 1);
+				try {
+					img = Image.getInstance(Base64.decode(base64Data));
+				} catch (Exception e) {
+					log.warn("Failed retrieving image", e.toString());
+				}
+				if (img != null) {
+					try {
+						document.add(img);
+					}
+					catch (Exception e) {
+						log.warn("Image couldn't be added to the document", e.toString());
+					}
+				}
+			}
 			//nothing fancy for normal images
 			else {
 				super.startElement(tag, h);