From a694d35da01e934db8ac6a6051ea7ed7481e7a31 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=A1s=20Ortega=20Froysa?= <nicolas@ortegas.org>
Date: Mon, 29 Sep 2025 08:01:21 +0200
Subject: [PATCH] Allow use of stdin (piping) for input file.

---
 src/main.rs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 76ad636..61a3ba2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -40,8 +40,13 @@ fn main() -> io::Result<()> {
 		process::exit(1);
 	}
 
-	let in_file = fs::File::open(&args[1])?;
-	let mut in_reader = io::BufReader::new(in_file);
+	let mut in_reader:Box<dyn io::Read>;
+	if args[1] == "-" {
+		in_reader = Box::new(io::stdin());
+	} else {
+		let in_file = fs::File::open(&args[1])?;
+		in_reader = Box::new(io::BufReader::new(in_file));
+	}
 
 	let mut out_writer:Box<dyn io::Write>;
 	if args.len() == 3 {