Implemented the get_dir_files function

src/validate.rs

@@ -14,7 +14,27 @@ pub fn validate(verbosity: u8, config: util::config::Config) {
     // make sure each has a match
 }
 
-fn get_dir_files(path: PathBuf) -> Result<Vec<PathBuf>, &'static str>  {}
+fn get_dir_files(path: PathBuf) -> Result<Vec<PathBuf>, &'static str>  {
+    let mut res: Vec<PathBuf>;
+
+    // get the readout of the path for error handling
+    let entries = match fs::read_dir(path) {
+        Ok(x) => x,
+        Err(error) => return Err("Failed to read from the given directory"),
+    };
+
+    for entry in entries {
+        let p = entry.expect("Bad element: validate::get_dir_files(..)");
+        if p.path().is_dir() {
+            ();
+        } else {
+            res.push(p.path());
+        }
+    }
+
+    return Ok(res);
+}
+
 
 fn check_suffix(path: PathBuf, suf: String) -> bool {
     return