Move path handling to nu-path (#3653)

* fixes #3616

crates/nu-command/src/classified/external.rs

@@ -5,7 +5,6 @@ use nu_test_support::NATIVE_PATH_ENV_VAR;
 use parking_lot::Mutex;
 
 use std::io::Write;
-use std::ops::Deref;
 use std::process::{Command, Stdio};
 use std::sync::mpsc;
 use std::{borrow::Cow, io::BufReader};
@@ -105,7 +104,7 @@ fn run_with_stdin(
     let process_args = command_args
         .iter()
         .map(|(arg, _is_literal)| {
-            let arg = expand_tilde(arg.deref(), dirs_next::home_dir);
+            let arg = nu_path::expand_tilde_string(Cow::Borrowed(arg));
 
             #[cfg(not(windows))]
             {
@@ -126,7 +125,7 @@ fn run_with_stdin(
                 if let Some(unquoted) = remove_quotes(&arg) {
                     unquoted.to_string()
                 } else {
-                    arg.as_ref().to_string()
+                    arg.to_string()
                 }
             }
         })
@@ -486,15 +485,6 @@ impl Iterator for ChannelReceiver {
     }
 }
 
-fn expand_tilde<SI: ?Sized, P, HD>(input: &SI, home_dir: HD) -> std::borrow::Cow<str>
-where
-    SI: AsRef<str>,
-    P: AsRef<std::path::Path>,
-    HD: FnOnce() -> Option<P>,
-{
-    shellexpand::tilde_with_context(input, home_dir)
-}
-
 fn argument_is_quoted(argument: &str) -> bool {
     if argument.len() < 2 {
         return false;
@@ -543,9 +533,7 @@ fn shell_os_paths() -> Vec<std::path::PathBuf> {
 
 #[cfg(test)]
 mod tests {
-    use super::{
-        add_double_quotes, argument_is_quoted, escape_double_quotes, expand_tilde, remove_quotes,
-    };
+    use super::{add_double_quotes, argument_is_quoted, escape_double_quotes, remove_quotes};
     #[cfg(feature = "which")]
     use super::{run_external_command, InputStream};
 
@@ -667,20 +655,4 @@ mod tests {
         assert_eq!(remove_quotes("'andrés'"), Some("andrés"));
         assert_eq!(remove_quotes(r#""andrés""#), Some("andrés"));
     }
-
-    #[test]
-    fn expands_tilde_if_starts_with_tilde_character() {
-        assert_eq!(
-            expand_tilde("~", || Some(std::path::Path::new("the_path_to_nu_light"))),
-            "the_path_to_nu_light"
-        );
-    }
-
-    #[test]
-    fn does_not_expand_tilde_if_tilde_is_not_first_character() {
-        assert_eq!(
-            expand_tilde("1~1", || Some(std::path::Path::new("the_path_to_nu_light"))),
-            "1~1"
-        );
-    }
 }

crates/nu-command/src/commands/core_commands/nu_plugin.rs

@@ -1,10 +1,10 @@
 use std::path::PathBuf;
 
 use crate::prelude::*;
-use nu_engine::filesystem::path::canonicalize;
 use nu_engine::WholeStreamCommand;
 
 use nu_errors::ShellError;
+use nu_path::canonicalize;
 use nu_protocol::{CommandAction, ReturnSuccess, Signature, SyntaxShape, UntaggedValue};
 use nu_source::Tagged;
 

crates/nu-command/src/commands/core_commands/source.rs

@@ -2,10 +2,12 @@ use crate::prelude::*;
 use nu_engine::{script, WholeStreamCommand};
 
 use nu_errors::ShellError;
-use nu_parser::expand_path;
+use nu_path::expand_path;
 use nu_protocol::{Signature, SyntaxShape};
 use nu_source::Tagged;
 
+use std::{borrow::Cow, path::Path};
+
 pub struct Source;
 
 #[derive(Deserialize)]
@@ -46,7 +48,7 @@ pub fn source(args: CommandArgs) -> Result<ActionStream, ShellError> {
     // Note: this is a special case for setting the context from a command
     // In this case, if we don't set it now, we'll lose the scope that this
     // variable should be set into.
-    let contents = std::fs::read_to_string(expand_path(&filename.item).into_owned());
+    let contents = std::fs::read_to_string(&expand_path(Cow::Borrowed(Path::new(&filename.item))));
     match contents {
         Ok(contents) => {
             let result = script::run_script_standalone(contents, true, &ctx, false);

crates/nu-command/src/commands/path/expand.rs

@@ -1,12 +1,11 @@
 use super::{operate, PathSubcommandArguments};
 use crate::prelude::*;
-use nu_engine::filesystem::path::expand_tilde;
-use nu_engine::filesystem::path::resolve_dots;
 use nu_engine::WholeStreamCommand;
 use nu_errors::ShellError;
+use nu_path::expand_path;
 use nu_protocol::{ColumnPath, Signature, SyntaxShape, UntaggedValue, Value};
 use nu_source::Span;
-use std::path::Path;
+use std::{borrow::Cow, path::Path};
 
 pub struct PathExpand;
 
@@ -102,13 +101,7 @@ fn action(path: &Path, tag: Tag, args: &PathExpandArguments) -> Value {
             tag.span,
         ))
     } else {
-        // "best effort" mode, just expand tilde and resolve single/double dots
-        let path = match expand_tilde(path) {
-            Some(expanded) => expanded,
-            None => path.into(),
-        };
-
-        UntaggedValue::filepath(resolve_dots(&path)).into_value(tag)
+        UntaggedValue::filepath(expand_path(Cow::Borrowed(path))).into_value(tag)
     }
 }