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// This file is part of river, a dynamic tiling wayland compositor.
//
// Copyright 2020-2021 The River Developers
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
const std = @import("std");
const mem = std.mem;
const os = std.os;
const assert = std.debug.assert;
const wayland = @import("wayland");
const wl = wayland.client.wl;
const zriver = wayland.client.zriver;
const gpa = std.heap.c_allocator;
pub const Globals = struct {
control: ?*zriver.ControlV1 = null,
seat: ?*wl.Seat = null,
};
pub fn main() !void {
_main() catch |err| {
if (std.builtin.mode == .Debug)
return err;
switch (err) {
error.RiverControlNotAdvertised => printErrorExit(
\\The Wayland server does not support river-control-unstable-v1.
\\Do your versions of river and riverctl match?
, .{}),
error.SeatNotAdverstised => printErrorExit(
\\The Wayland server did not advertise any seat.
, .{}),
else => return err,
}
};
}
fn _main() !void {
const display = try wl.Display.connect(null);
const registry = try display.getRegistry();
var globals = Globals{};
registry.setListener(*Globals, registryListener, &globals);
_ = try display.roundtrip();
const control = globals.control orelse return error.RiverControlNotAdvertised;
const seat = globals.seat orelse return error.SeatNotAdverstised;
// Skip our name, send all other args
// This next line is needed cause of https://github.com/ziglang/zig/issues/2622
const args = os.argv;
for (args[1..]) |arg| control.addArgument(arg);
const callback = try control.runCommand(seat);
callback.setListener(?*c_void, callbackListener, null);
// Loop until our callback is called and we exit.
while (true) _ = try display.dispatch();
}
fn registryListener(registry: *wl.Registry, event: wl.Registry.Event, globals: *Globals) void {
switch (event) {
.global => |global| {
if (std.cstr.cmp(global.interface, wl.Seat.getInterface().name) == 0) {
assert(globals.seat == null); // TODO: support multiple seats
globals.seat = registry.bind(global.name, wl.Seat, 1) catch @panic("out of memory");
} else if (std.cstr.cmp(global.interface, zriver.ControlV1.getInterface().name) == 0) {
globals.control = registry.bind(global.name, zriver.ControlV1, 1) catch @panic("out of memory");
}
},
.global_remove => {},
}
}
fn callbackListener(callback: *zriver.CommandCallbackV1, event: zriver.CommandCallbackV1.Event, _: ?*c_void) void {
switch (event) {
.success => |success| {
if (mem.len(success.output) > 0) {
const stdout = std.io.getStdOut().writer();
stdout.print("{s}\n", .{success.output}) catch @panic("failed to write to stdout");
}
os.exit(0);
},
.failure => |failure| printErrorExit("Error: {s}\n", .{failure.failure_message}),
}
}
pub fn printErrorExit(comptime format: []const u8, args: anytype) noreturn {
const stderr = std.io.getStdErr().writer();
stderr.print("err: " ++ format ++ "\n", args) catch std.os.exit(1);
std.os.exit(1);
}
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