feat: add filetype and filesize to ls command output

src/builtins/ls.rs

@@ -1,4 +1,4 @@
-use std::{fs::File, io::stdout, path::PathBuf, str::FromStr};
+use std::{fs::metadata, path::PathBuf, str::FromStr};
 
 use crate::error::ShellError;
 
@@ -7,22 +7,48 @@ use super::{Builtin, BuiltinConfig};
 pub struct Ls;
 
 impl Builtin for Ls {
-    fn execute(&mut self, _: &mut BuiltinConfig, args: Vec<String>) -> Result<(), ShellError> {
+    fn execute(&mut self, _: &mut BuiltinConfig, _: Vec<String>) -> Result<(), ShellError> {
         let dir = std::env::current_dir().unwrap_or(PathBuf::from_str("/").unwrap());
         let entries = match std::fs::read_dir(dir) {
             Ok(e) => e,
             Err(e) => return Err(ShellError::ExecuteFailure(e.to_string())),
         };
+        //for entry in entries.by_ref().into_iter() {}
+
         for entry in entries {
             let entry = match entry {
                 Ok(e) => e,
-                Err(e) => {
+                Err(_) => {
                     println!("Couldn't get directory entry");
                     continue;
                 }
             };
-            println!("{}", entry.file_name().to_string_lossy())
+            let file_name = entry.file_name().to_string_lossy().to_string();
+            let mut file_type = "unknown";
+            let tmp = entry.file_type().unwrap();
+            if tmp.is_dir() {
+                file_type = "dir"
+            } else if tmp.is_file() {
+                file_type = "file"
+            } else if tmp.is_symlink() {
+                file_type = "link"
+            }
+            let metadata = metadata(entry.path()).unwrap();
+            println!(
+                "{:} | {:4} | {}",
+                right_padding(&file_name, 16),
+                file_type,
+                metadata.len()
+            )
         }
         Ok(())
     }
 }
+
+fn right_padding(s: &str, max: usize) -> String {
+    let mut tmp = String::from_str(s).unwrap();
+    for _ in tmp.len()..max {
+        tmp.push(' ');
+    }
+    tmp
+}