Add cli argument parsing

src/cli/cli.odin

@@ -0,0 +1,32 @@
+package cli
+
+import "core:flags"
+import "core:fmt"
+import "core:os"
+
+Options :: struct {
+	verbose:     bool `args:"name=verbose"                        usage:"Enable verbose output"`,
+	compression: u8 `args:"name=compression"                      usage:"Compression level, 0-12"`,
+	size:        i64 `args:"name=size"                            usage:"Chunk size in bytes"`,
+	input:       os.Handle `args:"name=input,file=r,required"     usage:"Path to input directory"`,
+	output:      os.Handle `args:"name=output,file=wc"            usage:"Path to ouput directory"`,
+	// overflow:    [dynamic]string,
+}
+
+parse :: proc() -> Options {
+	opts: Options
+
+	err := flags.parse(&opts, os.args[1:], .Unix)
+
+	if err != nil {
+		flags.print_errors(typeid_of(Options), err, os.args[0], .Unix)
+		os.exit(1)
+	}
+
+	if opts.compression > 12 {
+		fmt.eprintln("error: compression should be between 0-12")
+		os.exit(1)
+	}
+
+	return opts
+}

src/main.odin

@@ -2,9 +2,14 @@ package main
 
 import "core:fmt"
 
+import "src:cli"
+
 VERSION :: #config(VERSION, "dev")
 
 main :: proc() {
-	fmt.println("Hellope!")
+	opts := cli.parse()
-	fmt.println(VERSION)
+
+	fmt.println("verbose:", opts.verbose)
+	fmt.println("compression:", opts.compression)
+	fmt.println("size:", opts.size)
 }