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third_party_rust_rustix/examples/stdio.rs
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Dan Gohman 4e2599b729 Run the tests on Rust 1.48, and check compilation of tests and examples on more targets (#465) 
* Fix the tests to run on 1.48.

This puts the benchmarks behind a `criterion` cfg, so add
`--cfg=criterion` to RUSTFLAGS when running cargo bench.

An MSRV of 1.48 enables us to support users such as async-io, which also
has an MSRV of 1.48.

* Add a rust-version field.

This prints a warning under Rust 1.48, but only when rustix is the
top-level build; when rustix is a dependency, it doesn't warn, so this
seems ok.
2022-12-01 11:42:09 -08:00

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//! A command which prints out information about the standard input,
//! output, and error streams provided to it.
#![cfg_attr(io_lifetimes_use_std, feature(io_safety))]
#[cfg(not(windows))]
use rustix::fd::AsFd;
#[cfg(not(windows))]
use rustix::io::{self, stderr, stdin, stdout};
#[cfg(feature = "termios")]
#[cfg(not(windows))]
use rustix::termios::isatty;
#[cfg(all(
not(any(windows, target_os = "fuchsia")),
feature = "termios",
feature = "procfs"
))]
use rustix::termios::ttyname;
#[cfg(not(windows))]
fn main() -> io::Result<()> {
let (stdin, stdout, stderr) = unsafe { (stdin(), stdout(), stderr()) };
println!("Stdin:");
show(&stdin)?;
println!("Stdout:");
show(&stdout)?;
println!("Stderr:");
show(&stderr)?;
Ok(())
}
#[cfg(not(windows))]
fn show<Fd: AsFd>(fd: Fd) -> io::Result<()> {
let fd = fd.as_fd();
println!(" - ready: {:?}", rustix::io::ioctl_fionread(fd)?);
#[cfg(feature = "termios")]
if isatty(fd) {
#[cfg(feature = "procfs")]
#[cfg(not(target_os = "fuchsia"))]
println!(" - ttyname: {}", ttyname(fd, Vec::new())?.to_string_lossy());
#[cfg(target_os = "wasi")]
println!(" - is a tty");
#[cfg(not(target_os = "wasi"))]
println!(" - process group: {:?}", rustix::termios::tcgetpgrp(fd)?);
#[cfg(not(target_os = "wasi"))]
println!(" - winsize: {:?}", rustix::termios::tcgetwinsize(fd)?);
#[cfg(not(target_os = "wasi"))]
{
use rustix::termios::*;
let term = tcgetattr(fd)?;
if let Some(speed) = speed_value(cfgetispeed(&term)) {
println!(" - ispeed: {}", speed);
}
if let Some(speed) = speed_value(cfgetospeed(&term)) {
println!(" - ospeed: {}", speed);
}
print!(" - in flags:");
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & IGNBRK) != 0 {
print!(" IGNBRK");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & BRKINT) != 0 {
print!(" BRKINT");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & IGNPAR) != 0 {
print!(" IGNPAR");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & PARMRK) != 0 {
print!(" PARMRK");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & INPCK) != 0 {
print!(" INPCK");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & ISTRIP) != 0 {
print!(" ISTRIP");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & INLCR) != 0 {
print!(" INLCR");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & IGNCR) != 0 {
print!(" IGNCR");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & ICRNL) != 0 {
print!(" ICRNL");
}
#[cfg(any(
linux_raw,
all(
libc,
any(target_os = "haiku", target_os = "illumos", target_os = "solaris"),
)
))]
if (term.c_iflag & IUCLC) != 0 {
print!(" IUCLC");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & IXON) != 0 {
print!(" IXON");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & IXANY) != 0 {
print!(" IXANY");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_iflag & IXOFF) != 0 {
print!(" IXOFF");
}
#[cfg(not(any(target_os = "haiku", target_os = "ios", target_os = "macos")))]
if (term.c_iflag & IMAXBEL) != 0 {
print!(" IMAXBEL");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "emscripten",
target_os = "freebsd",
target_os = "haiku",
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_iflag & IUTF8) != 0 {
print!(" IUTF8");
}
println!();
print!(" - out flags:");
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_oflag & OPOST) != 0 {
print!(" OPOST");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "redox",
)))]
if (term.c_oflag & OLCUC) != 0 {
print!(" OLCUC");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_oflag & ONLCR) != 0 {
print!(" ONLCR");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_oflag & OCRNL) != 0 {
print!(" OCRNL");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_oflag & ONOCR) != 0 {
print!(" ONOCR");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_oflag & ONLRET) != 0 {
print!(" ONLRET");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
)))]
if (term.c_oflag & OFILL) != 0 {
print!(" OFILL");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
)))]
if (term.c_oflag & OFDEL) != 0 {
print!(" OFDEL");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_oflag & NLDLY) != 0 {
print!(" NLDLY");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_oflag & CRDLY) != 0 {
print!(" CRDLY");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "illumos",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_oflag & TABDLY) != 0 {
print!(" TABDLY");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_oflag & BSDLY) != 0 {
print!(" BSDLY");
}
#[cfg(not(any(
all(libc, target_env = "musl"),
target_os = "dragonfly",
target_os = "freebsd",
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_oflag & VTDLY) != 0 {
print!(" VTDLY");
}
#[cfg(not(any(
all(libc, target_env = "musl"),
target_os = "dragonfly",
target_os = "freebsd",
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_oflag & FFDLY) != 0 {
print!(" FFDLY");
}
println!();
print!(" - control flags:");
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "haiku",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
)))]
if (term.c_cflag & CBAUD) != 0 {
print!(" CBAUD");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "freebsd",
target_os = "haiku",
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_cflag & CBAUDEX) != 0 {
print!(" CBAUDEX");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_cflag & CSIZE) != 0 {
print!(" CSIZE");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_cflag & CSTOPB) != 0 {
print!(" CSTOPB");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_cflag & CREAD) != 0 {
print!(" CREAD");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_cflag & PARENB) != 0 {
print!(" PARENB");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_cflag & PARODD) != 0 {
print!(" PARODD");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_cflag & HUPCL) != 0 {
print!(" HUPCL");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_cflag & CLOCAL) != 0 {
print!(" CLOCAL");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "emscripten",
target_os = "freebsd",
target_os = "haiku",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
)))]
if (term.c_cflag & CIBAUD) != 0 {
print!(" CIBAUD");
}
#[cfg(not(any(
target_os = "dragonfly",
target_os = "emscripten",
target_os = "freebsd",
target_os = "haiku",
target_os = "illumos",
target_os = "ios",
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "redox",
target_os = "solaris",
)))]
if (term.c_cflag & CMSPAR) != 0 {
print!(" CMSPAR");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_cflag & CRTSCTS) != 0 {
print!(" CRTSCTS");
}
println!();
print!(" - local flags:");
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & ISIG) != 0 {
print!(" ISIG");
}
if (term.c_lflag & ICANON) != 0 {
print!(" ICANON");
}
#[cfg(any(linux_raw, all(libc, any(target_arch = "s390x", target_os = "haiku"))))]
if (term.c_lflag & XCASE) != 0 {
print!(" XCASE");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & ECHO) != 0 {
print!(" ECHO");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & ECHOE) != 0 {
print!(" ECHOE");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & ECHOK) != 0 {
print!(" ECHOK");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & ECHONL) != 0 {
print!(" ECHONL");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & ECHOCTL) != 0 {
print!(" ECHOCTL");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & ECHOPRT) != 0 {
print!(" ECHOPRT");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & ECHOKE) != 0 {
print!(" ECHOKE");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & FLUSHO) != 0 {
print!(" FLUSHO");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & NOFLSH) != 0 {
print!(" NOFLSH");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & TOSTOP) != 0 {
print!(" TOSTOP");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & PENDIN) != 0 {
print!(" PENDIN");
}
#[cfg(not(any(target_os = "ios", target_os = "macos")))]
if (term.c_lflag & IEXTEN) != 0 {
print!(" IEXTEN");
}
println!();
println!(
" - keys: INTR={} QUIT={} ERASE={} KILL={} EOF={} TIME={} MIN={} ",
key(term.c_cc[VINTR]),
key(term.c_cc[VQUIT]),
key(term.c_cc[VERASE]),
key(term.c_cc[VKILL]),
key(term.c_cc[VEOF]),
term.c_cc[VTIME],
term.c_cc[VMIN]
);
println!(
" START={} STOP={} SUSP={} EOL={}",
key(term.c_cc[VSTART]),
key(term.c_cc[VSTOP]),
key(term.c_cc[VSUSP]),
key(term.c_cc[VEOL]),
);
#[cfg(not(target_os = "haiku"))]
println!(
" REPRINT={} DISCARD={}",
key(term.c_cc[VREPRINT]),
key(term.c_cc[VDISCARD])
);
#[cfg(not(target_os = "haiku"))]
println!(
" WERASE={} VLNEXT={}",
key(term.c_cc[VWERASE]),
key(term.c_cc[VLNEXT]),
);
println!(" EOL2={}", key(term.c_cc[VEOL2]));
}
} else {
println!(" - is not a tty");
}
println!();
Ok(())
}
#[cfg(feature = "termios")]
#[cfg(not(windows))]
fn key(b: u8) -> String {
if b == 0 {
format!("<undef>")
} else if b < 0x20 {
format!("^{}", (b + 0x40) as char)
} else if b == 0x7f {
format!("^?")
} else {
format!("{}", b as char)
}
}
#[cfg(windows)]
fn main() {
unimplemented!()
}
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