fix: now works within WSL if gio is installed. (#71)

`gio` would fail on WSL which is fixed by detecting that WSL is present
which is when `wslview` will be prioritized.

Note that the binary size inceases by ~13kb as we try to avoid running `wslview`
first and fail everywhere, so prefer runtime performance on linux over binary
size. The binary size changes only on unix.

Author: Byron

Cargo.toml

@@ -19,3 +19,6 @@ name = "open"
 
 [target.'cfg(all(unix, not(macos)))'.dependencies]
 pathdiff = "0.2.0"
+
+[dependencies]
+is-wsl = "0.4.0"

src/unix.rs

@@ -7,20 +7,28 @@ use std::{
 
 pub fn commands<T: AsRef<OsStr>>(path: T) -> Vec<Command> {
     let path = path.as_ref();
-    [
-        ("xdg-open", &[path] as &[_]),
-        ("gio", &[OsStr::new("open"), path]),
-        ("gnome-open", &[path]),
-        ("kde-open", &[path]),
-        ("wslview", &[&wsl_path(path)]),
-    ]
-    .iter()
-    .map(|(command, args)| {
-        let mut cmd = Command::new(command);
-        cmd.args(*args);
-        cmd
-    })
-    .collect()
+    let mut commands: Vec<(&str, Vec<&OsStr>)> = vec![];
+
+    let wsl_path = wsl_path(path);
+    if is_wsl::is_wsl() {
+        commands.push(("wslview", vec![&wsl_path]));
+    }
+
+    commands.extend_from_slice(&[
+        ("xdg-open", vec![&path]),
+        ("gio", vec![OsStr::new("open"), path]),
+        ("gnome-open", vec![path]),
+        ("kde-open", vec![path]),
+    ]);
+
+    commands
+        .iter()
+        .map(|(command, args)| {
+            let mut cmd = Command::new(command);
+            cmd.args(args);
+            cmd
+        })
+        .collect()
 }
 
 pub fn with_command<T: AsRef<OsStr>>(path: T, app: impl Into<String>) -> Command {