1 files changed, 40 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..6ac0b4a
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,40 @@
+use std::{io::Write, path::PathBuf};
+
+use clap::Parser;
+
+#[derive(Debug, Parser)]
+struct Args {
+    file: Option<String>,
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let stdout = std::io::stdout();
+    let handle = stdout.lock();
+    let mut writer = std::io::BufWriter::new(handle);
+
+    let args = Args::parse();
+    let mut reader = match args.file {
+        Some(file) => {
+            let path = PathBuf::from(file);
+            let file = std::fs::File::open(path)?;
+            Box::new(std::io::BufReader::new(file)) as Box<dyn std::io::Read>
+        }
+        None => Box::new(std::io::BufReader::new(std::io::stdin())) as Box<dyn std::io::Read>,
+    };
+
+    let mut buf = [0u8; 1024];
+    write!(writer, "let _ : &'static [u8] = &[")?;
+    loop {
+        let n = reader.read(&mut buf)?;
+        if n == 0 {
+            break;
+        }
+        for i in 0..n {
+            write!(writer, "{:#02X},", buf[i])?;
+        }
+    }
+    write!(writer, "];")?;
+    writer.flush()?;
+
+    Ok(())
+}