refactor: scaffolded odin project with CLI parser, version command, Go fallback

cli.odin

@@ -0,0 +1,95 @@
+package main
+
+import "core:fmt"
+import "core:os"
+import "core:strings"
+
+Command :: struct {
+	name:     string,
+	args:     [dynamic]string,
+	flags:    map[string]string,
+	bool_set: map[string]bool,
+}
+
+IMPLEMENTED_COMMANDS := []string{
+	"version",
+}
+
+parse_args :: proc() -> (cmd: Command, ok: bool) {
+	args := os.args
+	if len(args) < 2 {
+		print_usage()
+		return Command{}, false
+	}
+
+	cmd.name = args[1]
+	cmd.args = make([dynamic]string)
+	cmd.flags = make(map[string]string)
+	cmd.bool_set = make(map[string]bool)
+
+	i := 2
+	for i < len(args) {
+		arg := args[i]
+		if strings.starts_with(arg, "--") {
+			key := arg[2:]
+			if i+1 < len(args) && !strings.starts_with(args[i+1], "-") {
+				cmd.flags[key] = args[i+1]
+				i += 2
+			} else {
+				cmd.bool_set[key] = true
+				i += 1
+			}
+		} else if strings.starts_with(arg, "-") && len(arg) == 2 {
+			key_slice := arg[1:2]
+			if i+1 < len(args) && !strings.starts_with(args[i+1], "-") {
+				cmd.flags[key_slice] = args[i+1]
+				i += 2
+			} else {
+				cmd.bool_set[key_slice] = true
+				i += 1
+			}
+		} else {
+			append(&cmd.args, arg)
+			i += 1
+		}
+	}
+
+	return cmd, true
+}
+
+is_implemented :: proc(name: string) -> bool {
+	for c in IMPLEMENTED_COMMANDS {
+		if c == name {
+			return true
+		}
+	}
+	return false
+}
+
+has_flag :: proc(cmd: ^Command, name: string) -> bool {
+	_, ok := cmd.flags[name]
+	if ok {
+		return true
+	}
+	_, ok2 := cmd.bool_set[name]
+	return ok2
+}
+
+print_usage :: proc() {
+	fmt.println("envr - Manage your .env files.")
+	fmt.println("")
+	fmt.println("Usage: envr <command> [args]")
+	fmt.println("")
+	fmt.println("Commands:")
+	fmt.println("  init          Set up envr")
+	fmt.println("  scan          Find and select .env files for backup")
+	fmt.println("  sync          Update or restore your env backups")
+	fmt.println("  backup <path> Import a .env file into envr")
+	fmt.println("  restore <path> Restore a .env file from the database")
+	fmt.println("  list          View your tracked files")
+	fmt.println("  remove <path> Remove a .env file from your database")
+	fmt.println("  check [path]  Check if files are backed up")
+	fmt.println("  deps          Check for missing binaries")
+	fmt.println("  version       Show envr's version")
+	fmt.println("  edit-config   Edit your config with your default editor")
+}