rewriting in go

main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"hash_utils/commands/crc8"
+	"hash_utils/commands/md5"
+	"hash_utils/commands/sha1"
+	"hash_utils/commands/sha256"
+	"hash_utils/commands/sha512"
+	"os"
+
+	"github.com/google/subcommands"
+)
+
+func main() {
+	subcommands.Register(subcommands.HelpCommand(), "help")
+	subcommands.Register(subcommands.FlagsCommand(), "help")
+	subcommands.Register(subcommands.CommandsCommand(), "help")
+
+	subcommands.Register(&md5.MD5Cmd{}, "unkeyed cryptographic hash functions")
+	subcommands.Register(&sha1.SHA1Cmd{}, "unkeyed cryptographic hash functions")
+	subcommands.Register(&sha256.SHA256Cmd{}, "unkeyed cryptographic hash functions")
+	subcommands.Register(&sha512.SHA512Cmd{}, "unkeyed cryptographic hash functions")
+
+	subcommands.Register(&crc8.CRC8Cmd{}, "cyclic redundancy checks")
+
+	flag.Parse()
+	ctx := context.Background()
+
+	os.Exit(int(subcommands.Execute(ctx)))
+}