feat: wogihrsoiuvjsroirgj

internal/cli/arguments.go

@@ -0,0 +1,28 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+)
+
+type CLIOptions struct {
+	Input   string
+	Verbose bool
+}
+
+func ParseOptions(args []string) (*CLIOptions, error) {
+	// Parse flags and arguments.
+	verbose := flag.Bool("v", false, "Verbosity. If set, the program will print logs.")
+	flag.Parse()
+
+	if flag.NArg() == 0 {
+		return nil, fmt.Errorf("No input given.")
+	} else if flag.NArg() > 1 {
+		return nil, fmt.Errorf("More than 1 command-line argument.")
+	}
+
+	return &CLIOptions{
+		Input:   flag.Arg(0),
+		Verbose: *verbose,
+	}, nil
+}

internal/cli/exit.go

@@ -0,0 +1,15 @@
+package cli
+
+import (
+	"fmt"
+	"os"
+)
+
+func HandleError(err error) {
+	if err == nil {
+		return
+	}
+
+	fmt.Fprintln(os.Stderr, err)
+	os.Exit(1)
+}

internal/cli/logger.go

@@ -0,0 +1,21 @@
+package cli
+
+import (
+	"log/slog"
+	"os"
+)
+
+func GetLogger(o CLIOptions) *slog.Logger {
+	var level slog.Level
+	if o.Verbose {
+		level = slog.LevelInfo
+	} else {
+		level = slog.LevelError
+	}
+
+	return slog.New(
+		slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+			Level: level,
+		}),
+	)
+}