diff --git a/TurtleValidator.js b/TurtleValidator.js
index 488a28b..87d6fbc 100755
--- a/TurtleValidator.js
+++ b/TurtleValidator.js
@@ -4,41 +4,8 @@ var N3 = require('n3'),
     fs = require('fs'),
     N3Util = N3.Util,
     http = require('http'),
-    fs = require('fs');
-
-var validateStream = function (turtleStream) {
-  var parser = N3.Parser();
-  var errorCount = 0, warningCount = 0;
-  var regexp = {
-    'dateTime' : /^(-?(?:[1-9][0-9]*)?[0-9]{4})-(1[0-2]|0[1-9])-(3[0-1]|0[1-9]|[1-2][0-9])?T(2[0-3]|[0-1][0-9]):([0-5][0-9]):([0-5][0-9])(\.[0-9]+)??(Z|[+-](?:2[0-3]|[0-1][0-9]):[0-5][0-9])?$/,
-    'double' : /[-+]?\d*([.]\d+)?/,
-    'float' : /[-+]?\d*[.]\d+/,
-    'int' : /^[-+]?(0|[1-9]\d*)$/
-  };
-
-  parser.parse(turtleStream, function(error, triple, prefixes) {
-    if (error) {
-      console.log(error);
-      errorCount++;
-    }
-
-    if (triple) {
-      if (N3Util.isLiteral(triple.object)) {
-        var value = N3Util.getLiteralValue(triple.object);
-        var type = N3Util.getLiteralType(triple.object);
-
-        type = type.replace('http://www.w3.org/2001/XMLSchema#', '');
-        
-        if (regexp[type] && !regexp[type].test(value)) {
-	  console.log('WARNING: xsd:', type, 'does not validate for literal. {', triple.subject, triple.predicate, triple.object, '}');
-	  warningCount++;
-        }
-      }
-    } else {
-      console.log('Validation done:', errorCount, 'errors and', warningCount ,'warnings found.');
-    }
-  });
-};
+    fs = require('fs'),
+    validate = require('./lib/validator.js');
 
 var help = function () {
   // In all other cases, let's help the user and return some help
@@ -57,7 +24,15 @@ if (process.argv[2] && (process.argv[2] === "-h" || process.argv[2] === "--help"
   help();
 } else if (process.argv.length === 2) {
   // Use stdio as an input stream
-  validateStream(process.stdin);
+  validate(process.stdin, function (feedback) {
+    feedback.errors.forEach(function (error) {
+      console.log(error);
+    });
+    feedback.warnings.forEach(function (warning) {
+      console.log(warning);
+    });
+    console.log("Validator finished with " + feedback.warnings.length + " warnings and " + feedback.errors.length + " errors.");
+  });
 } else if (process.argv.length === 3 ) {
   // Create a stream from the file, whether it is a local file or a http stream
   var filename = process.argv[2];
diff --git a/lib/validator.js b/lib/validator.js
new file mode 100644
index 0000000..ba19f86
--- /dev/null
+++ b/lib/validator.js
@@ -0,0 +1,41 @@
+var N3 = require('n3'),
+    N3Util = N3.Util;
+
+var validate =  function (turtleStream, callback) {
+  var parser = N3.Parser();
+  var errorCount = 0, warningCount = 0;
+  var regexp = {
+    'dateTime' : /^(-?(?:[1-9][0-9]*)?[0-9]{4})-(1[0-2]|0[1-9])-(3[0-1]|0[1-9]|[1-2][0-9])?T(2[0-3]|[0-1][0-9]):([0-5][0-9]):([0-5][0-9])(\.[0-9]+)??(Z|[+-](?:2[0-3]|[0-1][0-9]):[0-5][0-9])?$/,
+    'double' : /[-+]?\d*([.]\d+)?/,
+    'float' : /[-+]?\d*[.]\d+/,
+    'int' : /^[-+]?(0|[1-9]\d*)$/
+  };
+
+  var feedback = { warnings : [], errors : []};
+  
+  parser.parse(turtleStream, function(error, triple, prefixes) {
+    if (error) {
+      feedback.errors.push(error);
+    }
+
+    if (triple) {
+      if (N3Util.isLiteral(triple.object)) {
+        var value = N3Util.getLiteralValue(triple.object);
+        var type = N3Util.getLiteralType(triple.object);
+
+        type = type.replace('http://www.w3.org/2001/XMLSchema#', '');
+        if (regexp[type] && !regexp[type].test(value)) {
+          feedback.warnings.push('WARNING: xsd:', type, 'does not validate for literal. {', triple.subject, triple.predicate, triple.object, '}');
+        }
+      }
+    } else {
+      callback(feedback);
+    }
+  });
+};
+
+if (typeof window !== 'undefined') {
+  window.validate = validate;
+}
+
+module.exports = validate;