const os = std.os;
const linux = std.os.linux;

var origTermios: os.termios = undefined;

var origTermios: std.posix.termios = undefined;

        std.log.err("unable to set termios state: {s}", .{err});
        os.exit(1);

        std.log.err("unable to set termios state: {}", .{err});
        std.posix.exit(1);

        if (std.ascii.isCntrl(ch[0])) {

        if (std.ascii.isControl(ch[0])) {

    origTermios = try os.tcgetattr(stdin.handle);

    origTermios = try std.posix.tcgetattr(stdin.handle);

    termState.lflag &= ~@as(linux.tcflag_t, linux.ECHO | linux.ECHONL | linux.ICANON |
        linux.ISIG | linux.IEXTEN);
    termState.iflag &= ~@as(linux.tcflag_t, linux.IXON | linux.ICRNL | linux.INLCR |
        linux.BRKINT | linux.IGNBRK | linux.PARMRK | linux.ISTRIP | linux.IGNCR);
    termState.oflag &= ~@as(linux.tcflag_t, linux.OPOST);
    termState.cflag &= ~@as(linux.tcflag_t, linux.CSIZE | linux.PARENB);

    // termState.lflag &= ~@as(linux.tcflag_t, linux.ECHO | linux.ECHONL | linux.ICANON |
    //     linux.ISIG | linux.IEXTEN);
    // termState.iflag &= ~@as(linux.tcflag_t, linux.IXON | linux.ICRNL | linux.INLCR |
    //     linux.BRKINT | linux.IGNBRK | linux.PARMRK | linux.ISTRIP | linux.IGNCR);
    // termState.oflag &= ~@as(linux.tcflag_t, linux.OPOST);
    // termState.cflag &= ~@as(linux.tcflag_t, linux.CSIZE | linux.PARENB);
    termState.lflag = std.posix.tc_lflag_t{
        .ECHO = false,
        .ECHONL = false,
        .ICANON = false,
        .ISIG = false,
        .IEXTEN = false,
    };
    termState.iflag = std.posix.tc_iflag_t{
        .IXON = false,
        .ICRNL = false,
        .INLCR = false,
        .BRKINT = false,
        .IGNBRK = false,
        .PARMRK = false,
        .ISTRIP = false,
        .IGNCR = false,
    };
    termState.oflag = std.posix.tc_oflag_t{
        .OPOST = false,
    };
    termState.cflag = std.posix.tc_cflag_t{
        .CSIZE = .CS8,
        .PARENB = false,
    };

    termState.cflag |= linux.CS8;

    // termState.cflag |= linux.CS8;

    try os.tcsetattr(stdin.handle, linux.TCSA.FLUSH, termState);

    try std.posix.tcsetattr(stdin.handle, std.posix.TCSA.FLUSH, termState);

    os.tcsetattr(stdin.handle, linux.TCSA.FLUSH, origTermios) catch {};

    std.posix.tcsetattr(stdin.handle, std.posix.TCSA.FLUSH, origTermios) catch {};

pub fn build(b: *std.build.Builder) void {

// Although this function looks imperative, note that its job is to
// declaratively construct a build graph that will be executed by an external
// runner.
pub fn build(b: *std.Build) void {

    // Standard release options allow the person running `zig build` to select
    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
    const mode = b.standardReleaseOptions();

    // Standard optimization options allow the person running `zig build` to select
    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
    // set a preferred release mode, allowing the user to decide how to optimize.
    const optimize = b.standardOptimizeOption(.{});
    const exe = b.addExecutable(.{
        .name = "kilo",
        .root_source_file = b.path("src/main.zig"),
        .target = target,
        .optimize = optimize,
    });

    const exe = b.addExecutable("kilo", "src/main.zig");
    exe.setTarget(target);
    exe.setBuildMode(mode);
    exe.install();

    // This declares intent for the executable to be installed into the
    // standard location when the user invokes the "install" step (the default
    // step when running `zig build`).
    b.installArtifact(exe);
    // This *creates* a Run step in the build graph, to be executed when another
    // step is evaluated that depends on it. The next line below will establish
    // such a dependency.
    const run_cmd = b.addRunArtifact(exe);

    const run_cmd = exe.run();

    // By making the run step depend on the install step, it will be run from the
    // installation directory rather than directly from within the cache directory.
    // This is not necessary, however, if the application depends on other installed
    // files, this ensures they will be present and in the expected location.

    // This allows the user to pass arguments to the application in the build
    // command itself, like this: `zig build run -- arg1 arg2 etc`

    // This creates a build step. It will be visible in the `zig build --help` menu,
    // and can be selected like this: `zig build run`
    // This will evaluate the `run` step rather than the default, which is "install".

    const exe_unit_tests = b.addTest(.{
        .root_source_file = b.path("src/main.zig"),
        .target = target,
        .optimize = optimize,
    });
    const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
    // Similar to creating the run step earlier, this exposes a `test` step to
    // the `zig build --help` menu, providing a way for the user to request
    // running the unit tests.
    const test_step = b.step("test", "Run unit tests");
    test_step.dependOn(&run_exe_unit_tests.step);