hanging protocols first commit

Packages/hangingprotocols/server/match.js

@@ -0,0 +1,46 @@
+DICOMHP.match = function(studyInstanceUID) {
+  var metadata = DICOMService.retrieveMetadata(studyInstanceUID);
+  if (!metadata) {
+    return [];
+  }
+  var params = {"00080016" : "1.2.840.10008.5.1.4.38.1"}, modalities = metadata["00080061"].Value[0],
+      modalityMatch = null;
+
+  if (modalities) {
+    modalityMatch = [];
+    modalities.split('\\').forEach(function(modality){
+      if (modality && modality != 'SC') {
+        modalityMatch.push(modality);
+      }
+    });
+  }
+  var firstInstance = DICOMService.retrieveMetadata(studyInstanceUID, null, null, {limit : 1}),
+      lateralityMatch = null;
+
+  if (firstInstance.length > 0) {
+    lateralityMatch = firstInstance[0]["00200060"].Value[0];
+  }
+
+  // since orthanc doesn't support sequence matching
+  var allProtocols = DICOMService.searchForInstances(null, null, params);
+  if (allProtocols.length < 1) {
+    return [];
+  }
+  var matchedPrtocols = [];
+  allProtocols.forEach(function(protocol) {
+    var definitionSequence = protocol["0072000C"].Value;
+    definitionSequence.forEach(function(definition){
+      var defModality = definition["00080060"].Value[0];
+      if (defModality && modalityMatch && modalityMatch.indexOf(defModality) != -1) {
+        matchedPrtocols.push(protocol);
+        return;
+      }
+      var defLaterality = definition["00200060"].Value[0];
+      if (defLaterality && (defLaterality == lateralityMatch)) {
+        matchedPrtocols.push(protocol);
+        return;
+      }
+    });
+  });
+  return matchedPrtocols;
+};