river/river/command/input.zig
Alex Mirrlees-Black 33cc85d5ef
input: prevent duplicate input configs
(cherry picked from commit 5fbf174c3644a64ee217c732190b16ab9b65120a)
2024-04-27 13:39:47 +02:00

122 lines
3.8 KiB
Zig

// This file is part of river, a dynamic tiling wayland compositor.
//
// Copyright 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, version 3.
//
// 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 sort = std.sort;
const globber = @import("globber");
const server = &@import("../main.zig").server;
const util = @import("../util.zig");
const Error = @import("../command.zig").Error;
const Seat = @import("../Seat.zig");
const InputConfig = @import("../InputConfig.zig");
pub fn listInputs(
_: *Seat,
args: []const [:0]const u8,
out: *?[]const u8,
) Error!void {
if (args.len > 1) return error.TooManyArguments;
var input_list = std.ArrayList(u8).init(util.gpa);
const writer = input_list.writer();
var prev = false;
var it = server.input_manager.devices.iterator(.forward);
while (it.next()) |device| {
const configured = for (server.input_manager.configs.items) |*input_config| {
if (globber.match(device.identifier, input_config.glob)) {
break true;
}
} else false;
if (prev) try input_list.appendSlice("\n");
prev = true;
try writer.print("{s}\n\tconfigured: {}\n", .{
device.identifier,
configured,
});
}
out.* = try input_list.toOwnedSlice();
}
pub fn listInputConfigs(
_: *Seat,
args: []const [:0]const u8,
out: *?[]const u8,
) Error!void {
if (args.len > 1) return error.TooManyArguments;
var input_list = std.ArrayList(u8).init(util.gpa);
const writer = input_list.writer();
for (server.input_manager.configs.items, 0..) |*input_config, i| {
if (i > 0) try writer.writeByte('\n');
try input_config.write(writer);
}
out.* = try input_list.toOwnedSlice();
}
pub fn input(
_: *Seat,
args: []const [:0]const u8,
_: *?[]const u8,
) Error!void {
if (args.len < 4) return Error.NotEnoughArguments;
if (args.len > 4) return Error.TooManyArguments;
try globber.validate(args[1]);
// Try to find an existing InputConfig with matching glob pattern, or create
// a new one if none was found.
for (server.input_manager.configs.items) |*input_config| {
if (mem.eql(u8, input_config.glob, args[1])) {
try input_config.parse(args[2], args[3]);
break;
}
} else {
var input_config: InputConfig = .{
.glob = try util.gpa.dupe(u8, args[1]),
};
errdefer util.gpa.free(input_config.glob);
try server.input_manager.configs.ensureUnusedCapacity(1);
try input_config.parse(args[2], args[3]);
server.input_manager.configs.appendAssumeCapacity(input_config);
}
// Sort input configs from most general to least general
sort.insertion(InputConfig, server.input_manager.configs.items, {}, lessThan);
// We need to update all input device matching the glob. The user may
// add an input configuration at an arbitrary position in the generality
// ordered list, so the simplest way to ensure the device is configured
// correctly is to apply all input configurations again, in order.
server.input_manager.reconfigureDevices();
}
fn lessThan(_: void, a: InputConfig, b: InputConfig) bool {
return globber.order(a.glob, b.glob) == .gt;
}