✨ Add IncrementalStep* Generators

generators_examples_test.go

@@ -91,6 +91,61 @@ func ExampleIncrementalWithStartAndStep() {
 	// foo_46.txt
 }
 
+func ExampleIncrementalFormat() {
+	conf := NewConfig(
+		WithPrefix("foo"),
+		WithGenerator(IncrementalFormat("%03d")),
+	)
+
+	str, _ := Make(conf)
+	fmt.Println(str)
+
+	str, _ = Make(conf)
+	fmt.Println(str)
+
+	str, _ = Make(conf)
+	fmt.Println(str)
+
+	// Output:
+	// foo_000.txt
+	// foo_001.txt
+	// foo_002.txt
+}
+
+func ExampleIncrementalFormatWithStart() {
+	conf := NewConfig(
+		WithPrefix("foo"),
+		WithGenerator(IncrementalFormatWithStart(9, "%02d")),
+	)
+
+	str, _ := Make(conf)
+	fmt.Println(str)
+
+	str, _ = Make(conf)
+	fmt.Println(str)
+
+	// Output:
+	// foo_09.txt
+	// foo_10.txt
+}
+
+func ExampleIncrementalFormatWithStep() {
+	conf := NewConfig(
+		WithPrefix("foo"),
+		WithGenerator(IncrementalFormatWithStep(10, "%02d")),
+	)
+
+	str, _ := Make(conf)
+	fmt.Println(str)
+
+	str, _ = Make(conf)
+	fmt.Println(str)
+
+	// Output:
+	// foo_00.txt
+	// foo_10.txt
+}
+
 func ExampleSlug() {
 	conf := NewConfig(WithGenerator(Slug()), WithOriginal("My name is Jimmy"))
 	str, _ := Make(conf)