75 lines
2.9 KiB
Zig
75 lines
2.9 KiB
Zig
const std = @import("std");
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const print = std.debug.print;
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const input = @cImport(@cInclude("linux/input.h"));
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const CapsLockDown = input.input_event{ .type = input.EV_KEY, .code = input.KEY_CAPSLOCK, .value = 1, .time = undefined };
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const CapsLockUp = input.input_event{ .type = input.EV_KEY, .code = input.KEY_CAPSLOCK, .value = 0, .time = undefined };
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const EscDown = input.input_event{ .type = input.EV_KEY, .code = input.KEY_ESC, .value = 1, .time = undefined };
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const EscUp = input.input_event{ .type = input.EV_KEY, .code = input.KEY_ESC, .value = 0, .time = undefined };
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const LShiftDown = input.input_event{ .type = input.EV_KEY, .code = input.KEY_LEFTSHIFT, .value = 1, .time = undefined };
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const LShiftUp = input.input_event{ .type = input.EV_KEY, .code = input.KEY_LEFTSHIFT, .value = 0, .time = undefined };
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const RShiftDown = input.input_event{ .type = input.EV_KEY, .code = input.KEY_RIGHTSHIFT, .value = 1, .time = undefined };
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const RShiftUp = input.input_event{ .type = input.EV_KEY, .code = input.KEY_RIGHTSHIFT, .value = 0, .time = undefined };
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const Syn = input.input_event{ .type = input.EV_SYN, .code = input.SYN_REPORT, .value = 0, .time = undefined };
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fn event_equal(e1: *const input.input_event, e2: *const input.input_event) bool {
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return (e1.*.type == e2.*.type) and (e1.*.code == e2.*.code) and (e1.*.value == e2.*.value);
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}
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fn event_read(event: *input.input_event) !void {
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event.* = try std.io.getStdIn().reader().readStruct(@TypeOf(event.*));
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}
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fn event_write(event: *const input.input_event) !void {
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try std.io.getStdOut().writer().writeStruct(event.*);
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}
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fn write_esc() !void {
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std.time.sleep(20000);
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try event_write(&EscDown);
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try event_write(&Syn);
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std.time.sleep(20000);
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try event_write(&EscUp);
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}
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pub fn main() !void {
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var event: input.input_event = undefined;
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var write_esc_lshift: bool = undefined;
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var write_esc_rshift: bool = undefined;
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var is_lshift_down: bool = false;
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var is_rshift_down: bool = false;
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while (true) {
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try event_read(&event);
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if (event.type == input.EV_MSC and event.type == input.MSC_SCAN) {
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continue;
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}
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if (event.type != input.EV_KEY) {
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try event_write(&event);
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continue;
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}
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write_esc_lshift = event_equal(&event, &LShiftUp) and is_lshift_down;
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write_esc_rshift = event_equal(&event, &RShiftUp) and is_rshift_down;
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is_lshift_down = event_equal(&event, &LShiftDown);
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is_rshift_down = event_equal(&event, &RShiftDown);
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if (event_equal(&event, &CapsLockUp) or event_equal(&event, &CapsLockDown)) {
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event.code = input.KEY_LEFTMETA;
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}
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try event_write(&event);
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if (write_esc_lshift) {
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write_esc_lshift = false;
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try write_esc();
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}
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if (write_esc_rshift) {
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write_esc_rshift = false;
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try write_esc();
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}
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}
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}
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