common: standardize on -help option
Also: - Check for -help option *before* unknown options - Use common flags parsing code for riverctl - Add usage text to riverctl
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@ -100,6 +100,7 @@ pub fn build(b: *zbs.Builder) !void {
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riverctl.step.dependOn(&scanner.step);
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riverctl.addPackage(scanner.getPkg());
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riverctl.addPackagePath("flags", "common/flags.zig");
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riverctl.linkLibC();
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riverctl.linkSystemLibrary("wayland-client");
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@ -85,7 +85,7 @@ pub fn parse(args: [][*:0]const u8, comptime flags: []const Flag) !ParseResult(f
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.arg => {
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arg_idx += 1;
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if (arg_idx == args.len) {
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std.log.err("flag '" ++ flag.name ++
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std.log.err("option '" ++ flag.name ++
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"' requires an argument but none was provided!", .{});
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return error.MissingFlagArgument;
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}
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@ -40,7 +40,7 @@ pub var level: std.log.Level = switch (std.builtin.mode) {
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const usage: []const u8 =
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\\usage: river [options]
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\\
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\\ -h Print this help message and exit.
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\\ -help Print this help message and exit.
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\\ -c <command> Run `sh -c <command>` on startup.
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\\ -l <level> Set the log level to a value from 0 to 7.
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\\ -version Print the version number and exit.
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@ -51,7 +51,7 @@ pub fn main() anyerror!void {
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// This line is here because of https://github.com/ziglang/zig/issues/7807
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const argv: [][*:0]const u8 = os.argv;
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const result = flags.parse(argv[1..], &[_]flags.Flag{
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.{ .name = "-h", .kind = .boolean },
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.{ .name = "-help", .kind = .boolean },
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.{ .name = "-version", .kind = .boolean },
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.{ .name = "-c", .kind = .arg },
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.{ .name = "-l", .kind = .arg },
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@ -59,18 +59,18 @@ pub fn main() anyerror!void {
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try io.getStdErr().writeAll(usage);
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os.exit(1);
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};
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if (result.boolFlag("-help")) {
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try io.getStdOut().writeAll(usage);
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os.exit(0);
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}
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if (result.args.len != 0) {
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std.log.err("unknown option '{s}'", .{result.args[0]});
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try io.getStdErr().writeAll(usage);
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os.exit(1);
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}
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if (result.boolFlag("-h")) {
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try io.getStdOut().writeAll(usage);
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os.exit(0);
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}
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if (result.boolFlag("-version")) {
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try io.getStdOut().writeAll(@import("build_options").version);
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try io.getStdOut().writeAll(build_options.version);
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os.exit(0);
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}
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if (result.argFlag("-l")) |level_str| {
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@ -17,6 +17,7 @@
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const std = @import("std");
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const mem = std.mem;
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const io = std.io;
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const os = std.os;
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const assert = std.debug.assert;
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@ -24,6 +25,19 @@ const wayland = @import("wayland");
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const wl = wayland.client.wl;
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const zriver = wayland.client.zriver;
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const flags = @import("flags");
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const usage =
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\\usage: riverctl [options] <command>
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\\
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\\ -help Print this help message and exit.
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\\ -version Print the version number and exit.
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\\
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\\Complete documentation of the recognized commands may be found in
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\\the riverctl(1) man page.
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\\
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;
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const gpa = std.heap.c_allocator;
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pub const Globals = struct {
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@ -37,11 +51,11 @@ pub fn main() !void {
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return err;
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switch (err) {
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error.RiverControlNotAdvertised => printErrorExit(
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error.RiverControlNotAdvertised => fatal(
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\\The Wayland server does not support river-control-unstable-v1.
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\\Do your versions of river and riverctl match?
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, .{}),
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error.SeatNotAdverstised => printErrorExit(
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error.SeatNotAdverstised => fatal(
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\\The Wayland server did not advertise any seat.
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, .{}),
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else => return err,
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@ -50,6 +64,24 @@ pub fn main() !void {
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}
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fn _main() !void {
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// This line is here because of https://github.com/ziglang/zig/issues/7807
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const argv: [][*:0]const u8 = os.argv;
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const result = flags.parse(argv[1..], &[_]flags.Flag{
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.{ .name = "-help", .kind = .boolean },
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.{ .name = "-version", .kind = .boolean },
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}) catch {
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try io.getStdErr().writeAll(usage);
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os.exit(1);
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};
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if (result.boolFlag("-help")) {
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try io.getStdOut().writeAll(usage);
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os.exit(0);
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}
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if (result.boolFlag("-version")) {
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try io.getStdOut().writeAll(@import("build_options").version);
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os.exit(0);
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}
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const display = try wl.Display.connect(null);
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const registry = try display.getRegistry();
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@ -61,19 +93,9 @@ fn _main() !void {
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const control = globals.control orelse return error.RiverControlNotAdvertised;
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const seat = globals.seat orelse return error.SeatNotAdverstised;
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// This next line is needed cause of https://github.com/ziglang/zig/issues/2622
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const args = os.argv;
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if (mem.eql(u8, mem.span(args[1]), "-version")) {
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try std.io.getStdOut().writeAll(@import("build_options").version);
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std.os.exit(0);
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}
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// Skip our name, send all other args
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for (args[1..]) |arg| control.addArgument(arg);
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for (result.args) |arg| control.addArgument(arg);
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const callback = try control.runCommand(seat);
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callback.setListener(?*c_void, callbackListener, null);
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// Loop until our callback is called and we exit.
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@ -103,12 +125,19 @@ fn callbackListener(callback: *zriver.CommandCallbackV1, event: zriver.CommandCa
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}
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os.exit(0);
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},
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.failure => |failure| printErrorExit("Error: {s}\n", .{failure.failure_message}),
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.failure => |failure| {
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// A small hack to provide usage text when river reports an unknown command.
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if (std.cstr.cmp(failure.failure_message, "unknown command") == 0) {
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std.log.err("unknown command", .{});
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io.getStdErr().writeAll(usage) catch {};
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os.exit(1);
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}
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fatal("{s}", .{failure.failure_message});
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},
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}
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}
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pub fn printErrorExit(comptime format: []const u8, args: anytype) noreturn {
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const stderr = std.io.getStdErr().writer();
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stderr.print("err: " ++ format ++ "\n", args) catch std.os.exit(1);
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fn fatal(comptime format: []const u8, args: anytype) noreturn {
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std.log.err(format, args);
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std.os.exit(1);
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}
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@ -51,7 +51,7 @@ const flags = @import("flags");
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const usage =
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\\usage: rivertile [options]
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\\
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\\ -h, --help Print this help message and exit.
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\\ -help Print this help message and exit.
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\\ -version Print the version number and exit.
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\\ -view-padding Set the padding around views in pixels. (Default 6)
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\\ -outer-padding Set the padding around the edge of the layout area in
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@ -314,8 +314,7 @@ pub fn main() !void {
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// https://github.com/ziglang/zig/issues/7807
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const argv: [][*:0]const u8 = os.argv;
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const result = flags.parse(argv[1..], &[_]flags.Flag{
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.{ .name = "-h", .kind = .boolean },
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.{ .name = "--help", .kind = .boolean },
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.{ .name = "-help", .kind = .boolean },
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.{ .name = "-version", .kind = .boolean },
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.{ .name = "-view-padding", .kind = .arg },
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.{ .name = "-outer-padding", .kind = .arg },
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@ -326,12 +325,12 @@ pub fn main() !void {
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try std.io.getStdErr().writeAll(usage);
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os.exit(1);
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};
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if (result.args.len != 0) fatalPrintUsage("unknown option '{s}'", .{result.args[0]});
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if (result.boolFlag("-h") or result.boolFlag("--help")) {
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if (result.boolFlag("-help")) {
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try std.io.getStdOut().writeAll(usage);
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os.exit(0);
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}
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if (result.args.len != 0) fatalPrintUsage("unknown option '{s}'", .{result.args[0]});
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if (result.boolFlag("-version")) {
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try std.io.getStdOut().writeAll(@import("build_options").version);
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os.exit(0);
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