mkdir.

src/cli.rs

@@ -182,6 +182,7 @@ pub async fn cli() -> Result<(), Box<dyn Error>> {
             Arc::new(Remove),
             Arc::new(Copycp),
             Arc::new(Open),
+            Arc::new(Mkdir),
             Arc::new(Date),
             Arc::new(Where),
             Arc::new(Config),

src/commands.rs

@@ -23,6 +23,7 @@ crate mod get;
 crate mod lines;
 crate mod ls;
 crate mod next;
+crate mod mkdir;
 crate mod open;
 crate mod pick;
 crate mod plugin;
@@ -54,6 +55,7 @@ crate use cp::Copycp;
 crate use date::Date;
 crate use exit::Exit;
 crate use open::Open;
+crate use mkdir::Mkdir;
 crate use rm::Remove;
 crate use save::Save;
 crate use skip_while::SkipWhile;

src/commands/mkdir.rs

@@ -0,0 +1,64 @@
+use crate::errors::ShellError;
+use crate::parser::hir::SyntaxType;
+use crate::parser::registry::{CommandConfig, NamedType, PositionalType};
+use crate::prelude::*;
+use indexmap::IndexMap;
+use std::path::{Path, PathBuf};
+
+pub struct Mkdir;
+
+impl Command for Mkdir {
+    fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
+        mkdir(args)
+    }
+
+    fn name(&self) -> &str {
+        "mkdir"
+    }
+
+    fn config(&self) -> CommandConfig {
+        let mut named: IndexMap<String, NamedType> = IndexMap::new();
+        named.insert("p".to_string(), NamedType::Switch);
+
+        CommandConfig {
+            name: self.name().to_string(),
+            positional: vec![PositionalType::mandatory("file", SyntaxType::Path)],
+            rest_positional: false,
+            named,
+            is_sink: false,
+            is_filter: false,
+        }
+    }
+}
+
+pub fn mkdir(args: CommandArgs) -> Result<OutputStream, ShellError> {
+    let env = args.env.lock().unwrap();
+    let path = env.path.to_path_buf();
+    let cwd = path.clone();
+    let mut full_path = PathBuf::from(path);
+
+    match &args.nth(0) {
+        Some(Tagged { item: value, .. }) => full_path.push(Path::new(&value.as_string()?)),
+        _ => {}
+    }
+
+    if !args.has("p") {
+        match std::fs::create_dir(full_path) {
+            Err(_) => Err(ShellError::labeled_error(
+                "No such file or directory",
+                "No such file or directory",
+                args.nth(0).unwrap().span(),
+            )),
+            Ok(_) => Ok(OutputStream::empty()),
+        }
+    } else {
+        match std::fs::create_dir_all(full_path) {
+            Err(reason) => Err(ShellError::labeled_error(
+                reason.to_string(),
+                reason.to_string(),
+                args.nth(0).unwrap().span(),
+            )),
+            Ok(_) => Ok(OutputStream::empty()),
+        }
+    }
+}

tests/command_mkdir_tests.rs

@@ -0,0 +1,53 @@
+mod helpers;
+
+use h::{in_directory as cwd, Playground};
+use helpers as h;
+use std::path::PathBuf;
+
+#[test]
+fn creates_directory() {
+    let sandbox = Playground::setup_for("mkdir_test").test_dir_name();
+
+    let full_path = format!("{}/{}", Playground::root(), sandbox);
+
+    nu!(_output, cwd(&full_path), "mkdir my_new_directory");
+
+    let mut expected = PathBuf::from(full_path);
+    expected.push("my_new_directory");
+
+    assert!(h::dir_exists_at(expected));
+}
+
+#[test]
+fn error_if_intermediary_directory_doesnt_exist() {
+    let sandbox = Playground::setup_for("mkdir_test_2").test_dir_name();
+
+    let full_path = format!("{}/{}", Playground::root(), sandbox);
+
+    nu_error!(
+        output,
+        cwd(&full_path),
+        "mkdir some_folder/another/deeper_one"
+    );
+
+    assert!(output.contains("some_folder/another/deeper_one"));
+    assert!(output.contains("No such file or directory"));
+}
+
+#[test]
+fn creates_intermediary_directories_with_p_flag() {
+    let sandbox = Playground::setup_for("mkdir_test_3").test_dir_name();
+
+    let full_path = format!("{}/{}", Playground::root(), sandbox);
+
+    nu!(
+        _output,
+        cwd(&full_path),
+        "mkdir some_folder/another/deeper_one --p"
+    );
+
+    let mut expected = PathBuf::from(full_path);
+    expected.push("some_folder/another/deeper_one");
+
+    assert!(h::dir_exists_at(expected));
+}

tests/helpers/mod.rs

@@ -182,8 +182,7 @@ pub fn copy_file_to(source: &str, destination: &str) {
 }
 
 pub fn files_exist_at(files: Vec<&Path>, path: PathBuf) -> bool {
-    files.iter()
-         .all(|f| {
+    files.iter().all(|f| {
         let mut loc = path.clone();
         loc.push(f);
         loc.exists()