path2: Add opt variants for from_vec/from_str

src/libstd/path2/posix.rs

@@ -287,6 +287,12 @@ impl Path {
         GenericPath::from_vec(v)
     }
 
+    /// Returns a new Path from a byte vector, if possible
+    #[inline]
+    pub fn from_vec_opt(v: &[u8]) -> Option<Path> {
+        GenericPath::from_vec_opt(v)
+    }
+
     /// Returns a new Path from a string
     ///
     /// # Failure
@@ -297,6 +303,12 @@ impl Path {
         GenericPath::from_str(s)
     }
 
+    /// Returns a new Path from a string, if possible
+    #[inline]
+    pub fn from_str_opt(s: &str) -> Option<Path> {
+        GenericPath::from_str_opt(s)
+    }
+
     /// Converts the Path into an owned byte vector
     pub fn into_vec(self) -> ~[u8] {
         self.repr
@@ -475,6 +487,14 @@ mod tests {
         assert_eq!(Path::from_vec(b!("foo", 0xff, "/bar")).into_str(), None);
     }
 
+    #[test]
+    fn test_opt_paths() {
+        assert_eq!(Path::from_vec_opt(b!("foo/bar", 0)), None);
+        t!(v: Path::from_vec_opt(b!("foo/bar")).unwrap(), b!("foo/bar"));
+        assert_eq!(Path::from_str_opt("foo/bar\0"), None);
+        t!(s: Path::from_str_opt("foo/bar").unwrap(), "foo/bar");
+    }
+
     #[test]
     fn test_null_byte() {
         use path2::null_byte::cond;