Merged LesionTracker and OHIF Viewer, refactored out common components

Packages/dicomweb/server/getString.js

@@ -0,0 +1,23 @@
+/**
+ * Returns the specified element as a string.  Multi-valued elements will be separated by a backslash
+ *
+ * @param element - The group/element of the element (e.g. '00200013')
+ * @param [defaultValue] - The value to return if the element is not present
+ * @returns {*}
+ */
+DICOMWeb.getString = function(element, defaultValue) {
+  if(!element) {
+    return defaultValue;
+  }
+  // Value is not present if the attribute has a zero length value
+  if(!element.Value) {
+    return defaultValue;
+  }
+  // Sanity check to make sure we have at least one entry in the array.
+  if(!element.Value.length) {
+    return defaultValue;
+  }
+  // Join the array together separated by backslash
+  // NOTE: Orthanc does not correctly split values into an array so the join is a no-op
+  return element.Value.join('\\');
+};