Expose the anonymizer module which contains cleanTags, closes dcmjs…

…-org#172 (dcmjs-org#173)

* expose anonymizer

* Add anonymizer test case

src/index.js

@@ -41,6 +41,8 @@ import adapters from "./adapters/index.js";
 import utilities from "./utilities/index.js";
 import sr from "./sr/index.js";
 
+import { cleanTags } from "./anonymizer.js";
+
 let data = {
     BitArray,
     ReadBufferStream,
@@ -77,6 +79,10 @@ let normalizers = {
     DSRNormalizer
 };
 
+let anonymizer = {
+    cleanTags
+};
+
 const dcmjs = {
     DICOMWEB,
     adapters,
@@ -85,7 +91,8 @@ const dcmjs = {
     normalizers,
     sr,
     utilities,
-    log
+    log,
+    anonymizer
 };
 
 export {
@@ -96,7 +103,8 @@ export {
     normalizers,
     sr,
     utilities,
-    log
+    log,
+    anonymizer
 };
 
 export default dcmjs;

test/test_anonymizer.js

@@ -0,0 +1,45 @@
+const expect = require("chai").expect;
+const fs = require("fs");
+const path = require("path");
+
+const dcmjs = require("../build/dcmjs");
+const { DicomMetaDictionary, DicomDict, DicomMessage } = dcmjs.data;
+const { cleanTags } = dcmjs.anonymizer;
+
+const tests = {
+  test_export: () => {
+    expect(typeof cleanTags).to.equal("function");
+  },
+  test_anonymization: () => {
+    // given
+    const arrayBuffer = fs.readFileSync(path.resolve(__dirname, "sample-dicom.dcm")).buffer;
+    const dicomDict = DicomMessage.readFile(arrayBuffer);
+    expect(1).to.equal(1);
+
+    const tagInfo = dcmjs.data.DicomMetaDictionary.nameMap["PatientName"];
+    const tagNumber = tagInfo.tag,
+      tagString = dcmjs.data.Tag.fromPString(tagNumber).toCleanString();
+
+    const patientIDTag = dicomDict.dict[tagString];
+    const patientIDValue = patientIDTag.Value;
+
+    expect(patientIDValue).to.deep.equal(["Fall 3"]);
+
+    // when
+    cleanTags(dicomDict.dict);
+
+    // then
+    expect(patientIDTag.Value).to.deep.equal(["ANON^PATIENT"]);
+  },
+};
+
+exports.test = (testToRun) => {
+  Object.keys(tests).forEach((testName) => {
+    if (testToRun && !testName.toLowerCase().includes(testToRun.toLowerCase())) {
+      console.log("-- Skipping " + testName);
+      return false;
+    }
+    console.log("-- Starting " + testName);
+    tests[testName]();
+  });
+};

test/tests.js

@@ -7,7 +7,7 @@ const testToRun = process.argv[2];
 
 const parts = [
   "DICOMWEB", "adapters", "data", "derivations",
-  "normalizers", "sr", "utilities",
+  "normalizers", "sr", "utilities", "anonymizer",
 ];
 
 //