From 1af2e98e485ae35e75f098944f6601f73d49e1fd Mon Sep 17 00:00:00 2001
From: suranofsky <50344679+suranofsky@users.noreply.github.com>
Date: Fri, 21 Jun 2019 11:20:45 -0400
Subject: [PATCH] initial commit

moved MARC access methods to a new file
---
 marcUtility.js | 124 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 marcUtility.js

diff --git a/marcUtility.js b/marcUtility.js
new file mode 100644
index 0000000..b83c00e
--- /dev/null
+++ b/marcUtility.js
@@ -0,0 +1,124 @@
+    function getOclcControlNumber(controlFields) {
+             for (var x = 0; x < controlFields.length; x++) {
+                 var cField = controlFields[x];
+                 var oclcNumber = cField.getAttribute("tag");
+                 if (oclcNumber != null && oclcNumber.getValue() == '001') {
+                   return cField.getValue();
+                 } 
+             }
+      
+    }
+    
+    
+    
+   function getControlFieldValue(controlFields,fieldId) {
+             for (var x = 0; x < controlFields.length; x++) {
+                 var cField = controlFields[x];
+                 var tagAtt = cField.getAttribute("tag");
+                 if (tagAtt != null && tagAtt.getValue() == fieldId) {
+                   return cField.getValue();
+                 } 
+             } 
+    }
+  
+  
+  
+   function getDataField(dataFields,lookForField) {
+          var ui = SpreadsheetApp.getUi();
+          for (var z = 0; z < dataFields.length; z++) {
+             var tagAttribute = dataFields[z].getAttribute("tag");
+             if (tagAttribute != null && tagAttribute.getValue() == lookForField) {  //e.g. 040
+                 return dataFields[z];
+             }
+          }
+          return null;
+   }
+  
+  
+  //RETURNS '0' IF IT FINDS A MATCH
+  //RETURNS '1' IF NO MATCH FOUND
+  function doesSubFieldContain(subfields,lookForValue) {
+        var ui = SpreadsheetApp.getUi();
+        for (a = 0; a < subfields.length; a++) {
+          var subfieldValue = subfields[a].getValue();
+          if (subfieldValue.toLowerCase() == lookForValue.toLowerCase()) {
+             return 0;
+          }
+          else {
+             //ui.alert("DIND'T THINK THIS WAS A MATCH");
+          }
+          
+        }
+        return 1;
+  }
+  
+  
+  //RETURNS '0' IF IT FINDS A MATCH
+  //RETURNS '1' IF NO MATCH FOUND
+  //ATTEMPTS TO MATCH ON FIELD/SUBFIELD AND VALUE
+  function doesSubFieldContainWithin(subfields,desiredValue,subField) {
+        var ui = SpreadsheetApp.getUi();
+        for (a = 0; a < subfields.length; a++) {
+          var subfieldValue = subfields[a].getValue();
+          var subfieldCode = subfields[a].getAttribute('code').getValue();
+          if (subfieldValue.toLowerCase() == desiredValue.toLowerCase() && subfieldCode.toLowerCase() == subField.toLowerCase()) {
+             return 0;
+          }
+          
+        }
+        return 1;
+  }
+  
+  
+  function getValueForFieldSubField(allTheFields,field,subfield) {
+    var slimNsp = XmlService.getNamespace('http://www.loc.gov/MARC21/slim'); 
+    var ui = SpreadsheetApp.getUi();
+    var dataFields = getDataField(allTheFields,field); //040
+    if (dataFields == null) return null;
+    var subfields = dataFields.getChildren("subfield",slimNsp);
+    //FOR EACH SUBFIELD - IF THE 'CODE' OF THE SUBFIELD MATCHES THE SUBFIELD WE'RE
+    //LOOKING FOR RETURN THE VALUE (245$a)
+    for (x = 0; x <= subfields.length; x++) {
+      if (subfields[x] == null) continue;
+      var subfieldCode = subfields[x].getAttribute('code').getValue();
+      if (subfieldCode.toLowerCase() == subfield.toLowerCase()) {
+         return subfields[x].getValue();
+      }
+    }
+  }
+  
+  
+
+  function getControlField(controlFields,tagId) {
+      var ui = SpreadsheetApp.getUi();
+      for (var x = 0; x < controlFields.length; x++) {
+         var cField = controlFields[x];
+         var tagValue = cField.getAttribute("tag");
+         if (tagValue != null && tagValue.getValue() == tagId) {
+           return controlFields[x];
+         }
+      }
+      return null;
+  }
+  
+
+  function getValueForField(allTheFields,controlFields,field) {
+       var ui = SpreadsheetApp.getUi();
+       var test = getControlField(controlFields,field);
+       if (test == null) test = getDataField(allTheFields,field);
+       if (test == null) return "";
+       return test.getValue();
+  }
+
+
+  
+  function getCellValue(dataRange,row,col) {
+    try {
+      return dataRange.getCell(row,1).getValue();
+    }
+    catch(e) {
+      //NOT A PROBLEM...JUST RETURN NULL
+      return null;
+    }
+  }
+