Have got text transformations working

textfilters.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"strconv"
+)
+
+type TextFilter func(input string) (output string, err error)
+
+var TextFilters = map[string]TextFilter{
+	"unquote": func(input string) (output string, err error) {
+		return strconv.Unquote(input)
+	},
+	"format-json": func(input string) (output string, err error) {
+		var dst bytes.Buffer
+		if err := json.Indent(&dst, []byte(input), "", "  "); err != nil {
+			return "", err
+		}
+		return dst.String(), nil
+	},
+}