bendns' repos / erad
Diffstat (limited to 'src/main.rs')
-rw-r--r--src/main.rs28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..1b5d256
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,28 @@
+#![feature(io_error_more)]
+use std::{io::ErrorKind, process::ExitCode};
+
+macro_rules! fail {
+ () => {
+ fail!("<infile>")
+ };
+ ($usage:literal) => {{
+ eprintln!(concat!("usage: erad ", comat::comat!($usage)));
+ return ExitCode::FAILURE;
+ }};
+}
+
+fn main() -> ExitCode {
+ let Some(out) = std::env::args().nth(1) else {
+ fail!();
+ };
+ println!(
+ "{:?}",
+ match std::fs::read(out).map_err(|e| e.kind()) {
+ Err(ErrorKind::IsADirectory) => fail!("<valid {red}{italic}file{reset}>"),
+ Err(ErrorKind::PermissionDenied) => fail!("<{red}readable filename{reset}>"),
+ Err(_) => fail!("<{red}infile{reset}>"),
+ Ok(x) => x,
+ }
+ );
+ ExitCode::SUCCESS
+}