Files
aho_corasick
ansi_term
arrayvec
atty
backtrace
backtrace_sys
base64
bincode
bitflags
byteorder
bytes
c2_chacha
capnp
capnp_futures
capnp_rpc
cfg_if
chrono
clap
crossbeam_deque
crossbeam_epoch
crossbeam_queue
crossbeam_utils
ctrlc
daemon
failure
failure_derive
flexi_logger
fnv
futures
getrandom
glob
hid_io
api
device
module
protocol
hidapi
install_service
iovec
lazy_static
libc
lock_api
log
memchr
memoffset
mio
mio_uds
nanoid
net2
nix
nodrop
num_cpus
num_integer
num_traits
open
parking_lot
parking_lot_core
pem
ppv_lite86
proc_macro2
quote
rand
rand_chacha
rand_core
rand_hc
rand_isaac
rand_jitter
rand_os
rand_pcg
rand_xorshift
rcgen
regex
regex_syntax
remove_dir_all
ring
rustc_demangle
rustls
scoped_tls
scopeguard
sct
serde
slab
smallvec
spin
stream_cancel
strsim
syn
synstructure
tempfile
textwrap
thread_local
time
tokio
tokio_codec
tokio_core
tokio_current_thread
tokio_executor
tokio_fs
tokio_io
tokio_reactor
tokio_rustls
tokio_sync
tokio_tcp
tokio_threadpool
tokio_timer
tokio_udp
tokio_uds
unicode_width
unicode_xid
untrusted
vec_map
void
webpki
windows_service
x11
xcb
xkbcommon
yasna
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
/// Enables ANSI code support on Windows 10.
///
/// This uses Windows API calls to alter the properties of the console that
/// the program is running in.
///
/// https://msdn.microsoft.com/en-us/library/windows/desktop/mt638032(v=vs.85).aspx
///
/// Returns a `Result` with the Windows error code if unsuccessful.
#[cfg(windows)]
pub fn enable_ansi_support() -> Result<(), u32> {
    use winapi::um::processenv::GetStdHandle;
    use winapi::um::errhandlingapi::GetLastError;
    use winapi::um::consoleapi::{GetConsoleMode, SetConsoleMode};

    const STD_OUT_HANDLE: u32 = -11i32 as u32;
    const ENABLE_VIRTUAL_TERMINAL_PROCESSING: u32 = 0x0004;

    unsafe {
        // https://docs.microsoft.com/en-us/windows/console/getstdhandle
        let std_out_handle = GetStdHandle(STD_OUT_HANDLE);
        let error_code = GetLastError();
        if error_code != 0 { return Err(error_code); }
        
        // https://docs.microsoft.com/en-us/windows/console/getconsolemode
        let mut console_mode: u32 = 0;
        GetConsoleMode(std_out_handle, &mut console_mode);
        let error_code = GetLastError();
        if error_code != 0 { return Err(error_code); }

        // VT processing not already enabled?
        if console_mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING == 0 {
            // https://docs.microsoft.com/en-us/windows/console/setconsolemode
            SetConsoleMode(std_out_handle, console_mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING);
            let error_code = GetLastError();
            if error_code != 0 { return Err(error_code); }
        }
    }

    return Ok(());
}