Solve platform-specific issues

crates/ide/src/doc_links.rs

@@ -535,13 +535,11 @@ fn get_doc_base_urls(
 
     return (web_base, local_base);
 
-    // On Windows, cargo metadata returns paths without leading slashes, but
-    // Url::from_directory_path requires them.
-    // In unix adding another "/" will not make any difference.
     fn create_url_from_os_str(path: &OsStr) -> Option<Url> {
-        let mut with_leading_slash = OsStr::new("/").to_os_string();
-        with_leading_slash.push(path);
-        Url::from_directory_path(with_leading_slash.as_os_str()).ok()
+        let mut with_prefix = OsStr::new("file:///").to_os_string();
+        with_prefix.push(path);
+        with_prefix.push("/");
+        with_prefix.to_str().and_then(|s| Url::parse(s).ok())
     }
 }
 

crates/ide/src/doc_links/tests.rs

@@ -128,7 +128,7 @@ use foo$0::Foo;
 //- /lib.rs crate:foo
 pub struct Foo;
 "#,
-        Some(&OsStr::new("/home/user/project/")),
+        Some(&OsStr::new("/home/user/project")),
         Some(expect![[r#"https://docs.rs/foo/*/foo/index.html"#]]),
         Some(expect![[r#"file:///home/user/project/doc/foo/index.html"#]]),
     );
@@ -141,7 +141,7 @@ fn external_docs_doc_url_std_crate() {
 //- /main.rs crate:std
 use self$0;
 "#,
-        Some(&OsStr::new("/home/user/project/")),
+        Some(&OsStr::new("/home/user/project")),
         Some(expect!["https://doc.rust-lang.org/stable/std/index.html"]),
         None,
     );
@@ -154,7 +154,7 @@ fn external_docs_doc_url_struct() {
 //- /main.rs crate:foo
 pub struct Fo$0o;
 "#,
-        Some(&OsStr::new("/home/user/project/")),
+        Some(&OsStr::new("/home/user/project")),
         Some(expect![[r#"https://docs.rs/foo/*/foo/struct.Foo.html"#]]),
         Some(expect![[r#"file:///home/user/project/doc/foo/struct.Foo.html"#]]),
     );
@@ -169,7 +169,7 @@ pub struct Fo$0o;
 "#,
         Some(&OsStr::new(r"C:\Users\user\project")),
         Some(expect![[r#"https://docs.rs/foo/*/foo/struct.Foo.html"#]]),
-        Some(expect![[r#"file:///C:\Users\user\project/doc/foo/struct.Foo.html"#]]),
+        Some(expect![[r#"file:///C:/Users/user/project/doc/foo/struct.Foo.html"#]]),
     );
 }