diff --git a/src/main.zig b/src/main.zig index d711b8f..9774ca3 100644 --- a/src/main.zig +++ b/src/main.zig @@ -17,6 +17,7 @@ fn posix_sighandler(_: c_int) callconv(.c) void { const CliHandler = struct { handler: nightwatch.Handler, out: std.fs.File, + ignore: []const []const u8, const vtable = nightwatch.Handler.VTable{ .change = change_cb, @@ -26,6 +27,9 @@ const CliHandler = struct { fn change_cb(h: *nightwatch.Handler, path: []const u8, event_type: nightwatch.EventType, object_type: nightwatch.ObjectType) error{HandlerFailed}!void { const self: *CliHandler = @fieldParentPtr("handler", h); + for (self.ignore) |ignored| { + if (std.mem.eql(u8, path, ignored)) return; + } var buf: [4096]u8 = undefined; var stdout = self.out.writer(&buf); defer stdout.interface.flush() catch {}; @@ -45,6 +49,9 @@ const CliHandler = struct { fn rename_cb(h: *nightwatch.Handler, src: []const u8, dst: []const u8, object_type: nightwatch.ObjectType) error{HandlerFailed}!void { const self: *CliHandler = @fieldParentPtr("handler", h); + for (self.ignore) |ignored| { + if (std.mem.eql(u8, src, ignored) or std.mem.eql(u8, dst, ignored)) return; + } var buf: [4096]u8 = undefined; var stdout = self.out.writer(&buf); defer stdout.interface.flush() catch {}; @@ -106,10 +113,14 @@ fn usage(out: std.fs.File) !void { var buf: [4096]u8 = undefined; var writer = out.writer(&buf); try writer.interface.print( - \\Usage: nightwatch [ ...] + \\Usage: nightwatch [--ignore ]... [ ...] \\ \\The Watch never sleeps. \\ + \\Options: + \\ --ignore Suppress events whose path exactly matches . + \\ May be specified multiple times. + \\ \\Events printed to stdout (columns: event type path): \\ create a file or directory was created \\ modify a file was modified @@ -145,6 +156,44 @@ pub fn main() !void { var stderr = std.fs.File.stderr().writer(&buf); defer stderr.interface.flush() catch {}; + // Parse --ignore options and watch paths. + // Ignored paths are made absolute (without resolving symlinks) so they + // match the absolute paths the backend emits in event callbacks. + var ignore_list = std.ArrayListUnmanaged([]const u8){}; + defer { + for (ignore_list.items) |p| allocator.free(p); + ignore_list.deinit(allocator); + } + var watch_paths = std.ArrayListUnmanaged([]const u8){}; + defer watch_paths.deinit(allocator); + + var cwd_buf: [std.fs.max_path_bytes]u8 = undefined; + const cwd = try std.fs.cwd().realpath(".", &cwd_buf); + + var i: usize = 1; + while (i < args.len) : (i += 1) { + if (std.mem.eql(u8, args[i], "--ignore")) { + i += 1; + if (i >= args.len) { + try stderr.interface.print("nightwatch: --ignore requires an argument\n", .{}); + std.process.exit(1); + } + const raw = args[i]; + const abs = if (std.fs.path.isAbsolute(raw)) + try allocator.dupe(u8, raw) + else + try std.fs.path.join(allocator, &.{ cwd, raw }); + try ignore_list.append(allocator, abs); + } else { + try watch_paths.append(allocator, args[i]); + } + } + + if (watch_paths.items.len == 0) { + try usage(std.fs.File.stderr()); + std.process.exit(1); + } + if (is_posix) { sig_pipe = try std.posix.pipe(); const sa = std.posix.Sigaction{ @@ -163,12 +212,13 @@ pub fn main() !void { var cli_handler = CliHandler{ .handler = .{ .vtable = &CliHandler.vtable }, .out = std.fs.File.stdout(), + .ignore = ignore_list.items, }; var watcher = try nightwatch.init(allocator, &cli_handler.handler); defer watcher.deinit(); - for (args[1..]) |path| { + for (watch_paths.items) |path| { watcher.watch(path) catch |err| { try stderr.interface.print("nightwatch: {s}: {s}\n", .{ path, @errorName(err) }); continue;