Comments, command line arguments

fumofiles/fumo.fumo

@@ -1,6 +1,5 @@
- __________
-( !message )
- ----------
+(!message)
   ()
-     ()
-       \(ᗜˬᗜ)/
+    ()
+      ()
+        \(ᗜˬᗜ)/

src/fumo.rs

@@ -1,8 +1,14 @@
+/// Indicator of where the message should be in fumofile
 pub const MESSAGE_INDICATOR: &str = "!message";
+/// Fumofile name of the default fumo
+pub const FUMO_DEFAULT: &str = "fumo.fumo"; 
 
-pub fn sayify(fumofile:  &mut String, message: &str) -> String {
-    if fumofile.contains(MESSAGE_INDICATOR) {
-        return fumofile.replace(MESSAGE_INDICATOR,message);
+/// Returns a resulting string with `MESSAGE_INDICATOR` replaced with given
+/// `message`. If `MESSAGE_INDICATOR` is not present in fumofile - the
+/// `message` will be added on the new line at the end of the fumofile. 
+pub fn sayify(fumofile_contents:  &mut String, message: &str) -> String {
+    if fumofile_contents.contains(MESSAGE_INDICATOR) {
+        return fumofile_contents.replace(MESSAGE_INDICATOR,message);
     }
-    return format!("{}\n{}", fumofile, message);
+    return format!("{}\n{}", fumofile_contents, message);
 }

src/main.rs

@@ -1,7 +1,31 @@
 mod fumo;
+
+use std::path::Path;
+use std::fs;
+use std::env;
+
 fn main() {
-    let mut fumofile_contents = std::fs::read_to_string(std::path::Path::new("./fumofiles/fumo.fumo")).unwrap();
-    let message: String = fumo::sayify(&mut fumofile_contents,"fumo");
+    // get command line arguments
+    let args: Vec<String> = env::args().collect();
+
+    // try to retrieve a message from args
+    if args.len() <= 1 {
+        // no message was provided
+        std::process::exit(1);
+    }
+    
+    let clarg_message = &args[1..].join(" ");
+
+    // path to the fumofile
+    let fumofile_default_path = format!("./fumofiles/{}",fumo::FUMO_DEFAULT);
+    let fumofile_path = Path::new(&fumofile_default_path);
+
+    // read fumofile
+    let mut fumofile_contents = fs::read_to_string(fumofile_path).unwrap();
+    
+    // parse the file and get the resulting string
+    let message: String = fumo::sayify(&mut fumofile_contents, clarg_message);
+    
     println!("{}", message);
 }