✨ Add Slug Generator

generators.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/google/uuid"
+	"github.com/gosimple/slug"
 )
 
 // Generator is a function that returns the "random" portion of the returned filename.
@@ -123,3 +124,33 @@ func IncrementalWithStartAndStep(start, step int) Generator {
 		return out, nil
 	}
 }
+
+// ErrMissingOriginal is the error returned by Slug if there is no filename
+var ErrMissingOriginal = errors.New("missing original filename")
+
+func getOriginal(c *Config) (string, error) {
+	if c.original == "" {
+		return "", ErrMissingOriginal
+	}
+	name := c.original
+	c.original = ""
+	return name, nil
+}
+
+// Slug generates a name from the original filename.
+// When this is used, the original filename will be removed from the final filename.
+func Slug() Generator {
+	return func(c *Config) (string, error) {
+		name, err := getOriginal(c)
+		return slug.Make(name), err
+	}
+}
+
+// SlugWithLang generates a name from the original filename, accounting for the given language.
+// When this is used, the original filename will be removed from the final filename.
+func SlugWithLang(lang string) Generator {
+	return func(c *Config) (string, error) {
+		name, err := getOriginal(c)
+		return slug.MakeLang(name, lang), err
+	}
+}