this was an old project, i patched it up and optimized it

src/main.rs

@@ -0,0 +1,43 @@
+use clap::{Arg, Command};
+use pulldown_cmark::{Parser, Options, html};
+use std::{fs::File, io::{self, Read, Write}};
+
+fn main() -> io::Result<()> {
+    // Define and parse command-line arguments using clap 
+    let matches = Command::new("jelly")
+        .version("1.0")
+        .author("conzie")
+        .about("Converts a Markdown file to an HTML file")
+        .arg(
+            Arg::new("input")
+                .help("The input Markdown file")
+                .required(true)
+                .index(1),
+        )
+        .arg(
+            Arg::new("output")
+                .help("The output HTML file")
+                .required(true)
+                .index(2),
+        )
+        .get_matches();
+
+    let input_path = matches.get_one::<String>("input").unwrap();
+    let output_path = matches.get_one::<String>("output").unwrap();
+
+    let mut input_file = File::open(input_path)?;
+    let mut markdown_content = String::new();
+    input_file.read_to_string(&mut markdown_content)?;
+
+    let options = Options::empty();
+    let parser = Parser::new_ext(&markdown_content, options);
+    let mut html_output = String::new();
+    html::push_html(&mut html_output, parser);
+
+    let mut output_file = File::create(output_path)?;
+    output_file.write_all(html_output.as_bytes())?;
+
+    println!("Conversion successful! HTML written to: {}", output_path);
+
+    Ok(())
+}