1 files changed, 43 insertions, 0 deletions
diff --git a/third_party/rust/rkv/src/helpers.rs b/third_party/rust/rkv/src/helpers.rs
new file mode 100644
index 0000000000..89dcdf8dd7
--- /dev/null
+++ b/third_party/rust/rkv/src/helpers.rs
@@ -0,0 +1,43 @@
+// Copyright 2018-2019 Mozilla
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+// this file except in compliance with the License. You may obtain a copy of the
+// License at http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software distributed
+// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+// CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+
+use std::{
+    io,
+    path::{Path, PathBuf},
+};
+
+use url::Url;
+
+use crate::{error::StoreError, value::Value};
+
+pub(crate) fn read_transform(value: Result<&[u8], StoreError>) -> Result<Value, StoreError> {
+    match value {
+        Ok(bytes) => Value::from_tagged_slice(bytes).map_err(StoreError::DataError),
+        Err(e) => Err(e),
+    }
+}
+
+// Workaround the UNC path on Windows, see https://github.com/rust-lang/rust/issues/42869.
+// Otherwise, `Env::from_builder()` will panic with error_no(123).
+pub(crate) fn canonicalize_path<'p, P>(path: P) -> io::Result<PathBuf>
+where
+    P: Into<&'p Path>,
+{
+    let canonical = path.into().canonicalize()?;
+
+    Ok(if cfg!(target_os = "windows") {
+        let map_err = |_| io::Error::new(io::ErrorKind::Other, "path canonicalization error");
+        Url::from_file_path(&canonical)
+            .and_then(|url| url.to_file_path())
+            .map_err(map_err)?
+    } else {
+        canonical
+    })
+}