From b4f82ebfda8e5edc55b87dd5bb0831d8232f2049 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andreas.huber@lucares.de>
Date: Sat, 8 Mar 2025 19:31:05 +0100
Subject: [PATCH] add option to show help

---
 src/main.zig | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/main.zig b/src/main.zig
index 3f093c0..e8e3437 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -88,13 +88,14 @@ fn printHelp() void {
         \\                              eval "$(zig-totp --bash)"
         \\                         to your ~/.bashrc 
         \\  --config [path]        The path to a config file (default is $XDG_CONFIG_HOME/zig-totp or $HOME/.zig-totp).
+        \\  --help                 Show this help 
         \\  --version              Print the version number 
         \\
     ;
     std.debug.print("{s}", .{msg});
 }
 
-const Args = struct { list: bool, show: ?[]const u8, config_location: []const u8, validateAuthenticator: ?[]const u8, validateCode: ?[]const u8, print_version: bool };
+const Args = struct { list: bool, show: ?[]const u8, config_location: []const u8, validateAuthenticator: ?[]const u8, validateCode: ?[]const u8, print_version: bool, show_help: bool };
 
 const OtpAuthUrl = struct { name: []const u8, secretEncoded: []const u8, url: []const u8, period: u32, digits: u4, algorithm: []const u8 };
 
@@ -190,7 +191,7 @@ fn zeroPad(allocator: Allocator, digits: u4, x: anytype) ![]u8 {
 const ArgumentError = error{ InvalidOtpAuthUrl, UnknownParameter, MissingConfigLocation, AuthenticatorNotFound, MissingAuthenticatorParam, FailedToOpenConfigFile, TooManyParsinErrors };
 
 fn parseArgs(allocator: Allocator, args: []const []const u8) !Args {
-    var result = Args{ .list = false, .show = null, .config_location = try configLocation(allocator), .validateAuthenticator = null, .validateCode = null, .print_version = false };
+    var result = Args{ .list = false, .show = null, .config_location = try configLocation(allocator), .validateAuthenticator = null, .validateCode = null, .print_version = false, .show_help = false };
     var i: u17 = 1;
     while (i < args.len) : (i += 1) {
         const arg = args[i];
@@ -224,6 +225,8 @@ fn parseArgs(allocator: Allocator, args: []const []const u8) !Args {
                 return error.MissingConfigLocation;
             }
             result.config_location = args[i];
+        } else if (eql(u8, "--help", arg) or eql(u8, "help", arg)) {
+            result.show_help = true;
         } else if (eql(u8, "--version", arg)) {
             result.print_version = true;
         } else if (eql(u8, "list", arg)) {