Add header transform function

papaparse.js

@@ -1113,8 +1113,8 @@
 						header = header.trim();
 					}
 
-					if (_config.stripHeaders) {
+					if (_config.headerTransform) {
-						header = header.replace(/\s/g,'');
+						header = _config.headerTransform(header);
 					}
 
 					_fields.push(header);

tests/test-cases.js

@@ -734,11 +734,11 @@ var PARSE_TESTS = [
 		}
 	},
 	{
-		description: "Header rows are striped out of white spaces when stripHeaders is set ",
+		description: "Transform header",
-		input: '  A , B  ,  C  \r\na,b,c',
+		input: '  A , B  ,  C  \r\na,b ,c',
-		config: { header: true, stripHeaders: true },
+		config: { header: true, headerTransform: function(input) { return input.trim(); }},
 		expected: {
-			data: [{"A": "a", "B": "b", "C": "c"}],
+			data: [{"A": "a", "B": "b ", "C": "c"}],
 			errors: []
 		}
 	},