Feat: pwd

src/pwd.rs

@@ -0,0 +1,36 @@
+use std::{env, fs, process::exit};
+fn main() {
+    let mut args: Vec<String> = env::args().collect();
+    args.remove(0);
+    let mut output = Output::Logical;
+    for i in args {
+        if &i[..] == "-L" {
+            output = Output::Logical;
+        } else if &i[..] == "-P" {
+            output = Output::Physical;
+        }
+    }
+    match output {
+        | Output::Logical => println!("{}", get_logical_dir()),
+        | Output::Physical => {
+            println!("{}", fs::canonicalize(get_logical_dir()).unwrap().to_string_lossy())
+        }
+    }
+}
+
+fn get_logical_dir() -> String {
+    // current_dir follows symlinks which isn't what we want with 
+    // logical pwd.
+    match env::var("PWD") {
+        | Ok(d) => d,
+        | Err(e) => {
+            eprintln!("Could not read environment variable $PWD: {}", e);
+            exit(1);
+        }
+    }
+}
+
+enum Output {
+    Logical,
+    Physical
+}