Add utility function SplitIntoLines.

editorconfig/utils.go

@@ -24,6 +24,12 @@ func ContainsString(haystack []string, needle string) bool {
 	return false
 }
 
+var lineEndingsRegexp = regexp.MustCompile("(\r\n|\n|\r)")
+
+func SplitIntoLines(s string) []string {
+	return lineEndingsRegexp.Split(s, -1)
+}
+
 func ExitBecauseOfInternalError(err string) {
 	fmt.Println(err)
 	os.Exit(2)

editorconfig/utils_test.go

@@ -1,6 +1,8 @@
 package editorconfig
 
 import (
+	"reflect"
+	"strings"
 	"testing"
 )
 
@@ -15,3 +17,11 @@ func TestGetParentDir(t *testing.T) {
 		t.Error()
 	}
 }
+
+func TestSplitIntoLines(t *testing.T) {
+	result := SplitIntoLines("Aardvark\nBunny\rCat\r\nDolphin\n")
+	expected := []string{"Aardvark", "Bunny", "Cat", "Dolphin", ""}
+	if !reflect.DeepEqual(result, expected) {
+		t.Error("Did not split string into lines correctly, got lines: " + strings.Join(result, ", "))
+	}
+}