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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /vendor/io-lifetimes/examples/easy-conversions.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/io-lifetimes/examples/easy-conversions.rs')
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diff --git a/vendor/io-lifetimes/examples/easy-conversions.rs b/vendor/io-lifetimes/examples/easy-conversions.rs
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+//! io-lifetimes provides safe, portable, and convenient conversions from types
+//! implementing `IntoFilelike` and `FromSocketlike` to types implementing
+//! `FromFilelike` and `IntoSocketlike`, respectively.
+
+#![cfg_attr(io_lifetimes_use_std, feature(io_safety))]
+
+use io_lifetimes::FromFilelike;
+use std::fs::File;
+use std::io::{self, Read};
+use std::process::{Command, Stdio};
+
+fn main() -> io::Result<()> {
+ let mut child = Command::new("cargo")
+ .arg("--help")
+ .stdout(Stdio::piped())
+ .spawn()
+ .expect("failed to execute child");
+
+ // Convert from `ChildStderr` into `File` without any platform-specific
+ // code or `unsafe`!
+ let mut file = File::from_into_filelike(child.stdout.take().unwrap());
+
+ // Well, this example is not actually that cool, because `File` doesn't let
+ // you do anything that you couldn't already do with `ChildStderr` etc., but
+ // it's useful outside of standard library types.
+ let mut buffer = String::new();
+ file.read_to_string(&mut buffer)?;
+
+ Ok(())
+}