expose Mime::from_extension

Author: jbr

src/body.rs

@@ -491,15 +491,7 @@ async fn peek_mime(file: &mut async_std::fs::File) -> io::Result<Option<Mime>> {
 #[cfg(all(feature = "async_std", not(target_os = "unknown")))]
 fn guess_ext(path: &std::path::Path) -> Option<Mime> {
     let ext = path.extension().map(|p| p.to_str()).flatten();
-    match ext {
-        Some("html") => Some(mime::HTML),
-        Some("js") | Some("mjs") | Some("jsonp") => Some(mime::JAVASCRIPT),
-        Some("json") => Some(mime::JSON),
-        Some("css") => Some(mime::CSS),
-        Some("svg") => Some(mime::SVG),
-        Some("xml") => Some(mime::XML),
-        None | Some(_) => None,
-    }
+    ext.and_then(Mime::from_extension)
 }
 
 #[cfg(test)]

src/mime/mod.rs

@@ -50,6 +50,19 @@ impl Mime {
         Mime::from_str(&mime)
     }
 
+    /// Guess the mime type from a file extension
+    pub fn from_extension(extension: impl AsRef<str>) -> Option<Self> {
+        match extension.as_ref() {
+            "html" => Some(HTML),
+            "js" | "mjs" | "jsonp" => Some(JAVASCRIPT),
+            "json" => Some(JSON),
+            "css" => Some(CSS),
+            "svg" => Some(SVG),
+            "xml" => Some(XML),
+            _ => None,
+        }
+    }
+
     /// Access the Mime's `type` value.
     ///
     /// According to the spec this method should be named `type`, but that's a reserved keyword in