poc cli reader which is really nothing but hush

cmd/cli.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"bytes"
+	"flag"
+	"io"
+	"io/ioutil"
+	"local/pt-todo-server/pttodo"
+	"log"
+	"os"
+
+	"gopkg.in/yaml.v2"
+)
+
+func main() {
+	if err := _main(); err != nil {
+		panic(err)
+	}
+}
+
+func _main() error {
+	filepath := flag.String("f", "-", "path to yaml file")
+	flag.Parse()
+
+	var reader io.Reader
+	if *filepath == "-" {
+		reader = os.Stdin
+	} else {
+		b, err := ioutil.ReadFile(*filepath)
+		if err != nil {
+			return err
+		}
+		reader = bytes.NewReader(b)
+	}
+
+	b, err := ioutil.ReadAll(reader)
+	if err != nil {
+		return err
+	}
+
+	var root pttodo.Root
+	if err := yaml.Unmarshal(b, &root); err != nil {
+		return err
+	}
+
+	b2, err := yaml.Marshal(root)
+	if err != nil {
+		return err
+	}
+	log.Printf("%s", b2)
+	return nil
+}