1 files changed, 56 insertions, 0 deletions
diff --git a/vendor/os_str_bytes/src/wasm32/mod.rs b/vendor/os_str_bytes/src/wasm32/mod.rs
new file mode 100644
index 000000000..f8ae36861
--- /dev/null
+++ b/vendor/os_str_bytes/src/wasm32/mod.rs
@@ -0,0 +1,56 @@
+use std::borrow::Cow;
+use std::error::Error;
+use std::ffi::OsStr;
+use std::ffi::OsString;
+use std::fmt;
+use std::fmt::Display;
+use std::fmt::Formatter;
+use std::result;
+use std::str;
+use std::str::Utf8Error;
+
+if_raw_str! {
+    pub(super) mod raw;
+}
+
+#[derive(Debug, Eq, PartialEq)]
+pub(super) struct EncodingError(Utf8Error);
+
+impl Display for EncodingError {
+    fn fmt(&self, formatter: &mut Formatter<'_>) -> fmt::Result {
+        write!(formatter, "os_str_bytes: {}", self.0)
+    }
+}
+
+impl Error for EncodingError {}
+
+type Result<T> = result::Result<T, EncodingError>;
+
+macro_rules! expect_utf8 {
+    ( $result:expr ) => {
+        $result.expect(
+            "platform string contains invalid UTF-8, which should not be \
+            possible",
+        )
+    };
+}
+
+pub(super) fn os_str_from_bytes(string: &[u8]) -> Result<Cow<'_, OsStr>> {
+    str::from_utf8(string)
+        .map(|x| Cow::Borrowed(OsStr::new(x)))
+        .map_err(EncodingError)
+}
+
+pub(super) fn os_str_to_bytes(os_string: &OsStr) -> Cow<'_, [u8]> {
+    Cow::Borrowed(expect_utf8!(os_string.to_str()).as_bytes())
+}
+
+pub(super) fn os_string_from_vec(string: Vec<u8>) -> Result<OsString> {
+    String::from_utf8(string)
+        .map(Into::into)
+        .map_err(|x| EncodingError(x.utf8_error()))
+}
+
+pub(super) fn os_string_into_vec(os_string: OsString) -> Vec<u8> {
+    expect_utf8!(os_string.into_string()).into_bytes()
+}