internal: Enforce utf8 paths

Cargo.toml

@@ -105,6 +105,7 @@ anyhow = "1.0.75"
 arrayvec = "0.7.4"
 bitflags = "2.4.1"
 cargo_metadata = "0.18.1"
+camino = "1.1.6"
 chalk-solve = { version = "0.96.0", default-features = false }
 chalk-ir = "0.96.0"
 chalk-recursive = { version = "0.96.0", default-features = false }

crates/flycheck/src/lib.rs

@@ -8,10 +8,10 @@
 
 #![warn(rust_2018_idioms, unused_lifetimes)]
 
-use std::{fmt, io, path::PathBuf, process::Command, time::Duration};
+use std::{fmt, io, process::Command, time::Duration};
 
 use crossbeam_channel::{never, select, unbounded, Receiver, Sender};
-use paths::{AbsPath, AbsPathBuf};
+use paths::{AbsPath, AbsPathBuf, Utf8PathBuf};
 use rustc_hash::FxHashMap;
 use serde::Deserialize;
 
@@ -53,7 +53,7 @@ pub enum FlycheckConfig {
         extra_args: Vec<String>,
         extra_env: FxHashMap<String, String>,
         ansi_color_output: bool,
-        target_dir: Option<PathBuf>,
+        target_dir: Option<Utf8PathBuf>,
     },
     CustomCommand {
         command: String,
@@ -363,7 +363,7 @@ impl FlycheckActor {
                 });
 
                 cmd.arg("--manifest-path");
-                cmd.arg(self.root.join("Cargo.toml").as_os_str());
+                cmd.arg(self.root.join("Cargo.toml"));
 
                 for target in target_triples {
                     cmd.args(["--target", target.as_str()]);

crates/ide-diagnostics/Cargo.toml

@@ -26,6 +26,7 @@ text-edit.workspace = true
 cfg.workspace = true
 hir.workspace = true
 ide-db.workspace = true
+paths.workspace = true
 
 [dev-dependencies]
 expect-test = "1.4.0"

crates/ide-diagnostics/src/handlers/unlinked_file.rs

@@ -8,6 +8,7 @@ use ide_db::{
     source_change::SourceChange,
     RootDatabase,
 };
+use paths::Utf8Component;
 use syntax::{
     ast::{self, edit::IndentLevel, HasModuleItem, HasName},
     AstNode, TextRange,
@@ -84,10 +85,10 @@ fn fixes(ctx: &DiagnosticsContext<'_>, file_id: FileId) -> Option<Vec<Assist>> {
 
         // try resolving the relative difference of the paths as inline modules
         let mut current = root_module;
-        for ele in rel.as_ref().components() {
+        for ele in rel.as_utf8_path().components() {
             let seg = match ele {
-                std::path::Component::Normal(seg) => seg.to_str()?,
-                std::path::Component::RootDir => continue,
+                Utf8Component::Normal(seg) => seg,
+                Utf8Component::RootDir => continue,
                 // shouldn't occur
                 _ => continue 'crates,
             };

crates/ide/src/doc_links.rs

@@ -5,8 +5,6 @@ mod tests;
 
 mod intra_doc_links;
 
-use std::ffi::OsStr;
-
 use pulldown_cmark::{BrokenLink, CowStr, Event, InlineStr, LinkType, Options, Parser, Tag};
 use pulldown_cmark_to_cmark::{cmark_resume_with_options, Options as CMarkOptions};
 use stdx::format_to;
@@ -134,8 +132,8 @@ pub(crate) fn remove_links(markdown: &str) -> String {
 pub(crate) fn external_docs(
     db: &RootDatabase,
     FilePosition { file_id, offset }: FilePosition,
-    target_dir: Option<&OsStr>,
-    sysroot: Option<&OsStr>,
+    target_dir: Option<&str>,
+    sysroot: Option<&str>,
 ) -> Option<DocumentationLinks> {
     let sema = &Semantics::new(db);
     let file = sema.parse(file_id).syntax().clone();
@@ -331,8 +329,8 @@ fn broken_link_clone_cb(link: BrokenLink<'_>) -> Option<(CowStr<'_>, CowStr<'_>)
 fn get_doc_links(
     db: &RootDatabase,
     def: Definition,
-    target_dir: Option<&OsStr>,
-    sysroot: Option<&OsStr>,
+    target_dir: Option<&str>,
+    sysroot: Option<&str>,
 ) -> DocumentationLinks {
     let join_url = |base_url: Option<Url>, path: &str| -> Option<Url> {
         base_url.and_then(|url| url.join(path).ok())
@@ -479,15 +477,13 @@ fn map_links<'e>(
 fn get_doc_base_urls(
     db: &RootDatabase,
     def: Definition,
-    target_dir: Option<&OsStr>,
-    sysroot: Option<&OsStr>,
+    target_dir: Option<&str>,
+    sysroot: Option<&str>,
 ) -> (Option<Url>, Option<Url>) {
     let local_doc = target_dir
-        .and_then(|path| path.to_str())
         .and_then(|path| Url::parse(&format!("file:///{path}/")).ok())
         .and_then(|it| it.join("doc/").ok());
     let system_doc = sysroot
-        .and_then(|it| it.to_str())
         .map(|sysroot| format!("file:///{sysroot}/share/doc/rust/html/"))
         .and_then(|it| Url::parse(&it).ok());
 

crates/ide/src/doc_links/tests.rs

@@ -1,4 +1,4 @@
-use std::{ffi::OsStr, iter};
+use std::iter;
 
 use expect_test::{expect, Expect};
 use hir::Semantics;
@@ -18,10 +18,10 @@ use crate::{
 
 fn check_external_docs(
     ra_fixture: &str,
-    target_dir: Option<&OsStr>,
+    target_dir: Option<&str>,
     expect_web_url: Option<Expect>,
     expect_local_url: Option<Expect>,
-    sysroot: Option<&OsStr>,
+    sysroot: Option<&str>,
 ) {
     let (analysis, position) = fixture::position(ra_fixture);
     let links = analysis.external_docs(position, target_dir, sysroot).unwrap();
@@ -127,10 +127,10 @@ fn external_docs_doc_builtin_type() {
 //- /main.rs crate:foo
 let x: u3$02 = 0;
 "#,
-        Some(OsStr::new("/home/user/project")),
+        Some("/home/user/project"),
         Some(expect![[r#"https://doc.rust-lang.org/nightly/core/primitive.u32.html"#]]),
         Some(expect![[r#"file:///sysroot/share/doc/rust/html/core/primitive.u32.html"#]]),
-        Some(OsStr::new("/sysroot")),
+        Some("/sysroot"),
     );
 }
 
@@ -143,10 +143,10 @@ use foo$0::Foo;
 //- /lib.rs crate:foo
 pub struct Foo;
 "#,
-        Some(OsStr::new("/home/user/project")),
+        Some("/home/user/project"),
         Some(expect![[r#"https://docs.rs/foo/*/foo/index.html"#]]),
         Some(expect![[r#"file:///home/user/project/doc/foo/index.html"#]]),
-        Some(OsStr::new("/sysroot")),
+        Some("/sysroot"),
     );
 }
 
@@ -157,10 +157,10 @@ fn external_docs_doc_url_std_crate() {
 //- /main.rs crate:std
 use self$0;
 "#,
-        Some(OsStr::new("/home/user/project")),
+        Some("/home/user/project"),
         Some(expect!["https://doc.rust-lang.org/stable/std/index.html"]),
         Some(expect!["file:///sysroot/share/doc/rust/html/std/index.html"]),
-        Some(OsStr::new("/sysroot")),
+        Some("/sysroot"),
     );
 }
 
@@ -171,10 +171,10 @@ fn external_docs_doc_url_struct() {
 //- /main.rs crate:foo
 pub struct Fo$0o;
 "#,
-        Some(OsStr::new("/home/user/project")),
+        Some("/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"#]]),
-        Some(OsStr::new("/sysroot")),
+        Some("/sysroot"),
     );
 }
 
@@ -185,10 +185,10 @@ fn external_docs_doc_url_windows_backslash_path() {
 //- /main.rs crate:foo
 pub struct Fo$0o;
 "#,
-        Some(OsStr::new(r"C:\Users\user\project")),
+        Some(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(OsStr::new("/sysroot")),
+        Some("/sysroot"),
     );
 }
 
@@ -199,10 +199,10 @@ fn external_docs_doc_url_windows_slash_path() {
 //- /main.rs crate:foo
 pub struct Fo$0o;
 "#,
-        Some(OsStr::new(r"C:/Users/user/project")),
+        Some("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(OsStr::new("/sysroot")),
+        Some("/sysroot"),
     );
 }
 

crates/ide/src/lib.rs

@@ -58,8 +58,6 @@ mod view_item_tree;
 mod view_memory_layout;
 mod view_mir;
 
-use std::ffi::OsStr;
-
 use cfg::CfgOptions;
 use fetch_crates::CrateInfo;
 use hir::ChangeWithProcMacros;
@@ -511,8 +509,8 @@ impl Analysis {
     pub fn external_docs(
         &self,
         position: FilePosition,
-        target_dir: Option<&OsStr>,
-        sysroot: Option<&OsStr>,
+        target_dir: Option<&str>,
+        sysroot: Option<&str>,
     ) -> Cancellable<doc_links::DocumentationLinks> {
         self.with_db(|db| {
             doc_links::external_docs(db, position, target_dir, sysroot).unwrap_or_default()

crates/load-cargo/Cargo.toml

@@ -20,6 +20,7 @@ tracing.workspace = true
 
 hir-expand.workspace = true
 ide-db.workspace = true
+paths.workspace = true
 proc-macro-api.workspace = true
 project-model.workspace = true
 span.workspace = true

crates/load-cargo/src/lib.rs

@@ -38,7 +38,7 @@ pub fn load_workspace_at(
     load_config: &LoadCargoConfig,
     progress: &dyn Fn(String),
 ) -> anyhow::Result<(RootDatabase, vfs::Vfs, Option<ProcMacroServer>)> {
-    let root = AbsPathBuf::assert(std::env::current_dir()?.join(root));
+    let root = AbsPathBuf::assert_utf8(std::env::current_dir()?.join(root));
     let root = ProjectManifest::discover_single(&root)?;
     let mut workspace = ProjectWorkspace::load(root, cargo_config, progress)?;
 

crates/paths/Cargo.toml

@@ -12,10 +12,14 @@ rust-version.workspace = true
 doctest = false
 
 [dependencies]
+camino.workspace = true
 # Adding this dep sadly puts a lot of rust-analyzer crates after the
 # serde-derive crate. Even though we don't activate the derive feature here,
 # someone else in the crate graph certainly does!
 # serde.workspace = true
 
+[features]
+serde1 = ["camino/serde1"]
+
 [lints]
-workspace = true
+workspace = true