CLI: Add lua encode command for inline scripts

main/commands/all/lua/encode.go

@@ -0,0 +1,62 @@
+package lua
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	xlua "github.com/xtls/xray-core/common/lua"
+	"github.com/xtls/xray-core/main/commands/base"
+)
+
+var cmdEncode = &base.Command{
+	UsageLine: "{{.Exec}} lua encode [-gzip=false] [file | stdin:]",
+	Short:     "Encode a Lua script for inline configuration",
+	Long: `
+Encode one file or stdin: as an inline Lua script for the script configuration field.
+Files are read from the given path without searching configuration directories.
+The original bytes are preserved; the script is not executed or validated.
+The encoded string is written to stdout on one line, without quotes.
+
+Arguments:
+
+	-gzip=false
+		Disable compression and output base64: instead of base64+gzip:.
+		By default, gzip uses the highest compression level.
+
+Examples:
+
+	{{.Exec}} lua encode script.lua
+	{{.Exec}} lua encode -gzip=false script.lua
+	{{.Exec}} lua encode stdin:
+`,
+}
+
+var gzipEnabled = cmdEncode.Flag.Bool("gzip", true, "Compress the script with gzip.")
+
+func init() {
+	cmdEncode.Run = executeEncode
+}
+
+func executeEncode(cmd *base.Command, args []string) {
+	if len(args) != 1 {
+		cmd.Usage()
+	}
+	var code []byte
+	var err error
+	if args[0] == "stdin:" {
+		code, err = io.ReadAll(os.Stdin)
+	} else {
+		code, err = os.ReadFile(args[0])
+	}
+	if err != nil {
+		base.Fatalf("failed to read script: %s", err)
+	}
+	script, err := xlua.Encode(code, *gzipEnabled)
+	if err != nil {
+		base.Fatalf("failed to encode script: %s", err)
+	}
+	if _, err := fmt.Fprintln(os.Stdout, script); err != nil {
+		base.Fatalf("failed to write encoded script: %s", err)
+	}
+}