Get clap working for command parsing

Cargo.lock

@@ -264,6 +264,7 @@ version = "0.1.0"
 dependencies = [
  "clap",
  "dir_rpc",
+ "shlex",
  "vfs_rpc",
 ]
 
@@ -326,6 +327,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
 [[package]]
 name = "smallvec"
 version = "1.13.2"

Cargo.toml

@@ -6,4 +6,5 @@ edition = "2021"
 [dependencies]
 clap = { version = "4.5.18", features = ["derive"] }
 dir_rpc = { version = "0.1.0", path = "../dir_rpc" }
+shlex = "1.3.0"
 vfs_rpc = { version = "0.1.0", path = "../vfs/vfs_rpc" }

src/main.rs

@@ -1,30 +1,19 @@
 use std::{
     io::{self, Write},
     os::mikros::syscalls,
-    path::Path,
+    path::{Path, PathBuf},
 };
 
-use clap::{Parser, Subcommand};
+use clap::Parser;
 
 #[derive(Parser, Debug)]
-struct Cli {
+struct Ls {
-    #[command(subcommand)]
+    path: Option<PathBuf>,
-    command: Commands
 }
 
-#[derive(Subcommand, Debug)]
+#[derive(Parser, Debug)]
-enum Commands {
+struct Cat {
-    Pwd,
+    path: PathBuf,
-    Ls {
-        path: Option<String>
-    },
-    Cat {
-        path: String,
-    },
-    Exit {
-        path: String,
-    },
-    Help,
 }
 
 fn main() {
@@ -56,23 +45,30 @@ fn main() {
         if line.is_empty() {
             continue;
         }
-        let cmd = line.split(' ').collect::<Vec<_>>();
+        let Some(cmd) = shlex::split(line) else {
-        dbg!(Cli::try_parse_from(&cmd));
+            println!("Syntax error");
-        match cmd[0] {
+            continue;
+        };
+        match cmd[0].as_str() {
             "pwd" => println!("{}", cwd.to_string_lossy()),
             "ls" => {
-                let mut path = if cmd.len() > 1 {
+                let cmd = match Ls::try_parse_from(&cmd) {
-                    Path::new(cmd[1]).to_owned()
+                    Ok(cmd) => cmd,
-                } else {
+                    Err(err) => {
-                    cwd.clone()
+                        err.print().unwrap();
+                        continue;
+                    }
                 };
-                if path.is_relative() {
+                let cmd_path = cmd.path.clone().unwrap_or(PathBuf::new());
+                let abs_path = if cmd_path.is_relative() {
                     let mut abs_path = cwd.clone();
-                    abs_path.push(path);
+                    abs_path.push(cmd_path.clone());
-                    path = abs_path;
+                    abs_path
-                }
+                } else {
-                let Ok((fs_pid, dir_fd)) = vfs_client.open_dir(&path) else {
+                    cmd_path.clone()
-                    println!("psh: {}: failed to open", path.to_string_lossy());
+                };
+                let Ok((fs_pid, dir_fd)) = vfs_client.open_dir(&abs_path) else {
+                    println!("ls: {}: failed to open", cmd_path.display());
                     continue;
                 };
                 let fs_client = dir_rpc::Client::new(fs_pid);
@@ -81,18 +77,22 @@ fn main() {
                 }
             }
             "cat" => {
-                if cmd.len() < 2 {
+                let cmd = match Cat::try_parse_from(&cmd) {
-                    println!("Usage: cat <file>");
+                    Ok(cmd) => cmd,
-                    continue;
+                    Err(err) => {
-                }
+                        err.print().unwrap();
-                let mut path = Path::new(cmd[1]).to_owned();
+                        continue;
-                if path.is_relative() {
+                    }
+                };
+                let abs_path = if cmd.path.is_relative() {
                     let mut abs_path = cwd.clone();
-                    abs_path.push(path);
+                    abs_path.push(cmd.path.clone());
-                    path = abs_path;
+                    abs_path
-                }
+                } else {
-                let Ok(contents) = std::fs::read(&path) else {
+                    cmd.path.clone()
-                    println!("psh: {}: failed to read", path.to_string_lossy());
+                };
+                let Ok(contents) = std::fs::read(&abs_path) else {
+                    println!("cat: {}: failed to read", cmd.path.display());
                     continue;
                 };
                 io::stdout().lock().write_all(&contents).unwrap();
@@ -109,12 +109,11 @@ fn main() {
                 println!("Commands:");
                 println!("pwd");
                 println!("ls");
-
                 println!("cat");
                 println!("exit");
                 println!("help");
             }
-            _ => println!("psh: command not found: {}", cmd[0]),
+            _ => println!("psh: {}: command not found", cmd[0]),
         }
     }
 }