Add basic parser and org -> AST -> org rendering

cmd/org/org.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"bytes"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+
+	"github.com/niklasfasching/org"
+)
+
+func main() {
+	log.SetFlags(0)
+	if len(os.Args) < 3 {
+		log.Println("USAGE: org FILE OUTPUT_FORMAT")
+		log.Fatal("supported output formats: org")
+	}
+	bs, err := ioutil.ReadFile(os.Args[1])
+	if err != nil {
+		log.Fatal(err)
+	}
+	r, out := bytes.NewReader(bs), ""
+	switch strings.ToLower(os.Args[2]) {
+	case "org":
+		out = org.NewDocument().Parse(r).Write(org.NewOrgWriter()).String()
+	default:
+		log.Fatal("Unsupported output format")
+	}
+	log.Println(out)
+}