refactor route matching

src/application.rs

@@ -73,35 +73,32 @@ impl<S: 'static> HttpApplication<S> {
             HandlerType::Normal(idx)
         } else {
             let inner = self.as_ref();
-            let path: &'static str =
-                unsafe { &*(&req.path()[inner.prefix..] as *const _) };
-            let path_len = path.len();
+            req.match_info_mut().set_tail(0);
+
             'outer: for idx in 0..inner.handlers.len() {
                 match inner.handlers[idx] {
                     PrefixHandlerType::Handler(ref prefix, _) => {
                         let m = {
+                            let path = &req.path()[inner.prefix..];
+                            let path_len = path.len();
+
                             path.starts_with(prefix)
                                 && (path_len == prefix.len()
                                     || path.split_at(prefix.len()).1.starts_with('/'))
                         };
 
                         if m {
-                            let prefix_len = inner.prefix + prefix.len();
-                            let path: &'static str =
-                                unsafe { &*(&req.path()[prefix_len..] as *const _) };
-
-                            req.set_prefix_len(prefix_len as u16);
-                            if path.is_empty() {
-                                req.match_info_mut().add("tail", "/");
-                            } else {
-                                req.match_info_mut().add("tail", path);
-                            }
+                            let prefix_len = (inner.prefix + prefix.len()) as u16;
+                            let url = req.url().clone();
+                            req.set_prefix_len(prefix_len);
+                            req.match_info_mut().set_url(url);
+                            req.match_info_mut().set_tail(prefix_len);
                             return HandlerType::Handler(idx);
                         }
                     }
                     PrefixHandlerType::Scope(ref pattern, _, ref filters) => {
                         if let Some(prefix_len) =
-                            pattern.match_prefix_with_params(path, req.match_info_mut())
+                            pattern.match_prefix_with_params(req, inner.prefix)
                         {
                             for filter in filters {
                                 if !filter.check(req) {
@@ -109,12 +106,12 @@ impl<S: 'static> HttpApplication<S> {
                                 }
                             }
 
-                            let prefix_len = inner.prefix + prefix_len;
-                            let path: &'static str =
-                                unsafe { &*(&req.path()[prefix_len..] as *const _) };
-
-                            req.set_prefix_len(prefix_len as u16);
-                            req.match_info_mut().set("tail", path);
+                            let prefix_len = (inner.prefix + prefix_len) as u16;
+                            let url = req.url().clone();
+                            req.set_prefix_len(prefix_len);
+                            let params = req.match_info_mut();
+                            params.set_tail(prefix_len);
+                            params.set_url(url);
                             return HandlerType::Handler(idx);
                         }
                     }

src/de.rs

@@ -1,9 +1,7 @@
 use serde::de::{self, Deserializer, Error as DeError, Visitor};
-use std::borrow::Cow;
-use std::convert::AsRef;
-use std::slice::Iter;
 
 use httprequest::HttpRequest;
+use param::ParamsIter;
 
 macro_rules! unsupported_type {
     ($trait_fn:ident, $name:expr) => {
@@ -191,7 +189,7 @@ impl<'de, S: 'de> Deserializer<'de> for PathDeserializer<'de, S> {
 }
 
 struct ParamsDeserializer<'de> {
-    params: Iter<'de, (Cow<'de, str>, Cow<'de, str>)>,
+    params: ParamsIter<'de>,
     current: Option<(&'de str, &'de str)>,
 }
 
@@ -202,10 +200,7 @@ impl<'de> de::MapAccess<'de> for ParamsDeserializer<'de> {
     where
         K: de::DeserializeSeed<'de>,
     {
-        self.current = self
-            .params
-            .next()
-            .map(|&(ref k, ref v)| (k.as_ref(), v.as_ref()));
+        self.current = self.params.next().map(|ref item| (item.0, item.1));
         match self.current {
             Some((key, _)) => Ok(Some(seed.deserialize(Key { key })?)),
             None => Ok(None),
@@ -381,7 +376,7 @@ impl<'de> Deserializer<'de> for Value<'de> {
 }
 
 struct ParamsSeq<'de> {
-    params: Iter<'de, (Cow<'de, str>, Cow<'de, str>)>,
+    params: ParamsIter<'de>,
 }
 
 impl<'de> de::SeqAccess<'de> for ParamsSeq<'de> {
@@ -392,9 +387,7 @@ impl<'de> de::SeqAccess<'de> for ParamsSeq<'de> {
         T: de::DeserializeSeed<'de>,
     {
         match self.params.next() {
-            Some(item) => Ok(Some(seed.deserialize(Value {
-                value: item.1.as_ref(),
-            })?)),
+            Some(item) => Ok(Some(seed.deserialize(Value { value: item.1 })?)),
             None => Ok(None),
         }
     }

src/fs.rs

@@ -1190,7 +1190,7 @@ mod tests {
         assert_eq!(resp.status(), StatusCode::NOT_FOUND);
 
         let mut req = HttpRequest::default();
-        req.match_info_mut().add("tail", "");
+        req.match_info_mut().add_static("tail", "");
 
         st.show_index = true;
         let resp = st.handle(req).respond_to(&HttpRequest::default()).unwrap();
@@ -1207,7 +1207,7 @@ mod tests {
     fn test_redirect_to_index() {
         let mut st = StaticFiles::new(".").index_file("index.html");
         let mut req = HttpRequest::default();
-        req.match_info_mut().add("tail", "tests");
+        req.match_info_mut().add_static("tail", "tests");
 
         let resp = st.handle(req).respond_to(&HttpRequest::default()).unwrap();
         let resp = resp.as_msg();
@@ -1218,7 +1218,7 @@ mod tests {
         );
 
         let mut req = HttpRequest::default();
-        req.match_info_mut().add("tail", "tests/");
+        req.match_info_mut().add_static("tail", "tests/");
 
         let resp = st.handle(req).respond_to(&HttpRequest::default()).unwrap();
         let resp = resp.as_msg();
@@ -1233,7 +1233,7 @@ mod tests {
     fn test_redirect_to_index_nested() {
         let mut st = StaticFiles::new(".").index_file("mod.rs");
         let mut req = HttpRequest::default();
-        req.match_info_mut().add("tail", "src/client");
+        req.match_info_mut().add_static("tail", "src/client");
 
         let resp = st.handle(req).respond_to(&HttpRequest::default()).unwrap();
         let resp = resp.as_msg();

src/httprequest.rs

@@ -40,7 +40,7 @@ pub struct HttpInnerMessage {
     pub(crate) flags: MessageFlags,
     pub headers: HeaderMap,
     pub extensions: Extensions,
-    pub params: Params<'static>,
+    pub params: Params,
     pub addr: Option<SocketAddr>,
     pub payload: Option<Payload>,
     pub prefix: u16,
@@ -268,6 +268,11 @@ impl<S> HttpRequest<S> {
         self.as_ref().url.path()
     }
 
+    #[inline]
+    pub(crate) fn url(&self) -> &InnerUrl {
+        &self.as_ref().url
+    }
+
     /// Get *ConnectionInfo* for correct request.
     pub fn connection_info(&self) -> &ConnectionInfo {
         if self.extensions().get::<Info>().is_none() {

src/param.rs

@@ -1,13 +1,12 @@
 use http::StatusCode;
 use smallvec::SmallVec;
 use std;
-use std::borrow::Cow;
 use std::ops::Index;
 use std::path::PathBuf;
-use std::slice::Iter;
 use std::str::FromStr;
 
 use error::{InternalError, ResponseError, UriSegmentError};
+use uri::Url;
 
 /// A trait to abstract the idea of creating a new instance of a type from a
 /// path parameter.
@@ -19,73 +18,79 @@ pub trait FromParam: Sized {
     fn from_param(s: &str) -> Result<Self, Self::Err>;
 }
 
+#[derive(Debug, Clone, Copy)]
+pub(crate) enum ParamItem {
+    Static(&'static str),
+    UrlSegment(u16, u16),
+}
+
 /// Route match information
 ///
 /// If resource path contains variable patterns, `Params` stores this variables.
 #[derive(Debug)]
-pub struct Params<'a>(SmallVec<[(Cow<'a, str>, Cow<'a, str>); 3]>);
+pub struct Params {
+    url: Url,
+    pub(crate) tail: u16,
+    segments: SmallVec<[(&'static str, ParamItem); 3]>,
+}
 
-impl<'a> Params<'a> {
-    pub(crate) fn new() -> Params<'a> {
-        Params(SmallVec::new())
+impl Params {
+    pub(crate) fn new() -> Params {
+        Params {
+            url: Url::default(),
+            tail: 0,
+            segments: SmallVec::new(),
+        }
     }
 
     pub(crate) fn clear(&mut self) {
-        self.0.clear();
+        self.segments.clear();
     }
 
-    pub(crate) fn add<N, V>(&mut self, name: N, value: V)
-    where
-        N: Into<Cow<'a, str>>,
-        V: Into<Cow<'a, str>>,
-    {
-        self.0.push((name.into(), value.into()));
+    pub(crate) fn set_url(&mut self, url: Url) {
+        self.url = url;
     }
 
-    pub(crate) fn set<N, V>(&mut self, name: N, value: V)
-    where
-        N: Into<Cow<'a, str>>,
-        V: Into<Cow<'a, str>>,
-    {
-        let name = name.into();
-        let value = value.into();
-        for item in &mut self.0 {
-            if item.0 == name {
-                item.1 = value;
-                return;
-            }
-        }
-        self.0.push((name, value));
+    pub(crate) fn set_tail(&mut self, tail: u16) {
+        self.tail = tail;
     }
 
-    pub(crate) fn remove(&mut self, name: &str) {
-        for idx in (0..self.0.len()).rev() {
-            if self.0[idx].0 == name {
-                self.0.remove(idx);
-                return;
-            }
+    pub(crate) fn add(&mut self, name: &'static str, value: ParamItem) {
+        self.segments.push((name, value));
     }
+
+    pub(crate) fn add_static(&mut self, name: &'static str, value: &'static str) {
+        self.segments.push((name, ParamItem::Static(value)));
     }
 
     /// Check if there are any matched patterns
     pub fn is_empty(&self) -> bool {
-        self.0.is_empty()
+        self.segments.is_empty()
     }
 
     /// Check number of extracted parameters
     pub fn len(&self) -> usize {
-        self.0.len()
+        self.segments.len()
     }
 
     /// Get matched parameter by name without type conversion
-    pub fn get(&'a self, key: &str) -> Option<&'a str> {
-        for item in self.0.iter() {
+    pub fn get(&self, key: &str) -> Option<&str> {
+        for item in self.segments.iter() {
             if key == item.0 {
-                return Some(item.1.as_ref());
+                return match item.1 {
+                    ParamItem::Static(s) => Some(s),
+                    ParamItem::UrlSegment(s, e) => {
+                        Some(&self.url.path()[(s as usize)..(e as usize)])
+                    }
+                };
             }
         }
+        if key == "tail" {
+            Some(&self.url.path()[(self.tail as usize)..])
+        } else {
             None
         }
+    }
 
     /// Get matched `FromParam` compatible parameter by name.
     ///
@@ -101,7 +106,7 @@ impl<'a> Params<'a> {
     /// }
     /// # fn main() {}
     /// ```
-    pub fn query<T: FromParam>(&'a self, key: &str) -> Result<T, <T as FromParam>::Err> {
+    pub fn query<T: FromParam>(&self, key: &str) -> Result<T, <T as FromParam>::Err> {
         if let Some(s) = self.get(key) {
             T::from_param(s)
         } else {
@@ -110,12 +115,41 @@ impl<'a> Params<'a> {
     }
 
     /// Return iterator to items in parameter container
-    pub fn iter(&self) -> Iter<(Cow<'a, str>, Cow<'a, str>)> {
-        self.0.iter()
+    pub fn iter(&self) -> ParamsIter {
+        ParamsIter {
+            idx: 0,
+            params: self,
+        }
     }
 }
 
-impl<'a, 'b, 'c: 'a> Index<&'b str> for &'c Params<'a> {
+#[derive(Debug)]
+pub struct ParamsIter<'a> {
+    idx: usize,
+    params: &'a Params,
+}
+
+impl<'a> Iterator for ParamsIter<'a> {
+    type Item = (&'a str, &'a str);
+
+    #[inline]
+    fn next(&mut self) -> Option<(&'a str, &'a str)> {
+        if self.idx < self.params.len() {
+            let idx = self.idx;
+            let res = match self.params.segments[idx].1 {
+                ParamItem::Static(s) => s,
+                ParamItem::UrlSegment(s, e) => {
+                    &self.params.url.path()[(s as usize)..(e as usize)]
+                }
+            };
+            self.idx += 1;
+            return Some((self.params.segments[idx].0, res));
+        }
+        None
+    }
+}
+
+impl<'a, 'b> Index<&'b str> for &'a Params {
     type Output = str;
 
     fn index(&self, name: &'b str) -> &str {
@@ -124,11 +158,14 @@ impl<'a, 'b, 'c: 'a> Index<&'b str> for &'c Params<'a> {
     }
 }
 
-impl<'a, 'c: 'a> Index<usize> for &'c Params<'a> {
+impl<'a> Index<usize> for &'a Params {
     type Output = str;
 
     fn index(&self, idx: usize) -> &str {
-        self.0[idx].1.as_ref()
+        match self.segments[idx].1 {
+            ParamItem::Static(s) => s,
+            ParamItem::UrlSegment(s, e) => &self.url.path()[(s as usize)..(e as usize)],
+        }
     }
 }
 

src/router.rs

@@ -1,12 +1,13 @@
 use std::collections::HashMap;
 use std::hash::{Hash, Hasher};
+use std::mem;
 use std::rc::Rc;
 
 use regex::{escape, Regex};
 
 use error::UrlGenerationError;
 use httprequest::HttpRequest;
-use param::Params;
+use param::ParamItem;
 use resource::ResourceHandler;
 use server::ServerSettings;
 
@@ -78,11 +79,10 @@ impl Router {
         if self.0.prefix_len > req.path().len() {
             return None;
         }
-        let path = unsafe { &*(&req.path()[self.0.prefix_len..] as *const str) };
-        let route_path = if path.is_empty() { "/" } else { path };
-
         for (idx, pattern) in self.0.patterns.iter().enumerate() {
-            if pattern.match_with_params(route_path, req.match_info_mut()) {
+            if pattern.match_with_params(req, self.0.prefix_len, true) {
+                let url = req.url().clone();
+                req.match_info_mut().set_url(url);
                 req.set_resource(idx);
                 req.set_prefix_len(self.0.prefix_len as u16);
                 return Some(idx);
@@ -261,63 +261,108 @@ impl Resource {
     }
 
     /// Are the given path and parameters a match against this resource?
-    pub fn match_with_params<'a>(
-        &'a self, path: &'a str, params: &'a mut Params<'a>,
+    pub fn match_with_params<S>(
+        &self, req: &mut HttpRequest<S>, plen: usize, insert: bool,
     ) -> bool {
+        let mut segments: [ParamItem; 24] = unsafe { mem::uninitialized() };
+
+        let (names, segments_len) = {
+            let path = &req.path()[plen..];
+            if insert {
+                if path.is_empty() {
+                    "/"
+                } else {
+                    path
+                }
+            } else {
+                path
+            };
+
             match self.tp {
-            PatternType::Static(ref s) => s == path,
+                PatternType::Static(ref s) => return s == path,
                 PatternType::Dynamic(ref re, ref names, _) => {
                     if let Some(captures) = re.captures(path) {
                         let mut idx = 0;
+                        let mut passed = false;
                         for capture in captures.iter() {
                             if let Some(ref m) = capture {
-                            if idx != 0 {
-                                params.add(names[idx - 1].as_str(), m.as_str());
+                                if !passed {
+                                    passed = true;
+                                    continue;
                                 }
+                                segments[idx] = ParamItem::UrlSegment(
+                                    (plen + m.start()) as u16,
+                                    (plen + m.end()) as u16,
+                                );
                                 idx += 1;
                             }
                         }
-                    true
+                        (names, idx)
                     } else {
-                    false
+                        return false;
                     }
                 }
-            PatternType::Prefix(ref s) => path.starts_with(s),
+                PatternType::Prefix(ref s) => return path.starts_with(s),
             }
+        };
+
+        let len = req.path().len();
+        let params = req.match_info_mut();
+        params.set_tail(len as u16);
+        for idx in 0..segments_len {
+            let name = unsafe { &*(names[idx].as_str() as *const _) };
+            params.add(name, segments[idx]);
+        }
+        true
     }
 
     /// Is the given path a prefix match and do the parameters match against this resource?
-    pub fn match_prefix_with_params<'a>(
-        &'a self, path: &'a str, params: &'a mut Params<'a>,
+    pub fn match_prefix_with_params<S>(
+        &self, req: &mut HttpRequest<S>, plen: usize,
     ) -> Option<usize> {
+        let mut segments: [ParamItem; 24] = unsafe { mem::uninitialized() };
+
+        let (names, segments_len, tail_len) = {
+            let path = &req.path()[plen..];
+            let path = if path.is_empty() { "/" } else { path };
+
             match self.tp {
                 PatternType::Static(ref s) => if s == path {
-                Some(s.len())
+                    return Some(s.len());
                 } else {
-                None
+                    return None;
                 },
                 PatternType::Dynamic(ref re, ref names, len) => {
                     if let Some(captures) = re.captures(path) {
                         let mut idx = 0;
                         let mut pos = 0;
+                        let mut passed = false;
                         for capture in captures.iter() {
                             if let Some(ref m) = capture {
-                            if idx != 0 {
-                                params.add(names[idx - 1].as_str(), m.as_str());
+                                if !passed {
+                                    passed = true;
+                                    continue;
                                 }
+
+                                segments[idx] = ParamItem::UrlSegment(
+                                    (plen + m.start()) as u16,
+                                    (plen + m.end()) as u16,
+                                );
                                 idx += 1;
                                 pos = m.end();
                             }
                         }
-                    Some(pos + len)
+                        (names, idx, pos + len)
                     } else {
-                    None
+                        return None;
                     }
                 }
-            PatternType::Prefix(ref s) => if path == s {
+                PatternType::Prefix(ref s) => {
+                    return if path == s {
                         Some(s.len())
                     } else if path.starts_with(s)
-                && (s.ends_with('/') || path.split_at(s.len()).1.starts_with('/'))
+                        && (s.ends_with('/')
+                            || path.split_at(s.len()).1.starts_with('/'))
                     {
                         if s.ends_with('/') {
                             Some(s.len() - 1)
@@ -326,9 +371,19 @@ impl Resource {
                         }
                     } else {
                         None
-            },
                     }
                 }
+            }
+        };
+
+        let params = req.match_info_mut();
+        params.set_tail(tail_len as u16);
+        for idx in 0..segments_len {
+            let name = unsafe { &*(names[idx].as_str() as *const _) };
+            params.add(name, segments[idx]);
+        }
+        Some(tail_len)
+    }
 
     /// Build resource path.
     pub fn resource_path<U, I>(
@@ -634,20 +689,22 @@ mod tests {
 
     #[test]
     fn test_parse_param() {
-        let mut req = HttpRequest::default();
-
         let re = Resource::new("test", "/user/{id}");
         assert!(re.is_match("/user/profile"));
         assert!(re.is_match("/user/2345"));
         assert!(!re.is_match("/user/2345/"));
         assert!(!re.is_match("/user/2345/sdg"));
 
-        req.match_info_mut().clear();
-        assert!(re.match_with_params("/user/profile", req.match_info_mut()));
+        let mut req = TestRequest::with_uri("/user/profile").finish();
+        let url = req.url().clone();
+        req.match_info_mut().set_url(url);
+        assert!(re.match_with_params(&mut req, 0, true));
         assert_eq!(req.match_info().get("id").unwrap(), "profile");
 
-        req.match_info_mut().clear();
-        assert!(re.match_with_params("/user/1245125", req.match_info_mut()));
+        let mut req = TestRequest::with_uri("/user/1245125").finish();
+        let url = req.url().clone();
+        req.match_info_mut().set_url(url);
+        assert!(re.match_with_params(&mut req, 0, true));
         assert_eq!(req.match_info().get("id").unwrap(), "1245125");
 
         let re = Resource::new("test", "/v{version}/resource/{id}");
@@ -655,8 +712,10 @@ mod tests {
         assert!(!re.is_match("/v/resource/1"));
         assert!(!re.is_match("/resource"));
 
-        req.match_info_mut().clear();
-        assert!(re.match_with_params("/v151/resource/adahg32", req.match_info_mut()));
+        let mut req = TestRequest::with_uri("/v151/resource/adahg32").finish();
+        let url = req.url().clone();
+        req.match_info_mut().set_url(url);
+        assert!(re.match_with_params(&mut req, 0, true));
         assert_eq!(req.match_info().get("version").unwrap(), "151");
         assert_eq!(req.match_info().get("id").unwrap(), "adahg32");
     }
@@ -684,15 +743,16 @@ mod tests {
         assert!(!re.is_match("/name"));
 
         let mut req = TestRequest::with_uri("/test2/").finish();
-        assert!(re.match_with_params("/test2/", req.match_info_mut()));
+        let url = req.url().clone();
+        req.match_info_mut().set_url(url);
+        assert!(re.match_with_params(&mut req, 0, true));
         assert_eq!(&req.match_info()["name"], "test2");
 
         let mut req =
             TestRequest::with_uri("/test2/subpath1/subpath2/index.html").finish();
-        assert!(re.match_with_params(
-            "/test2/subpath1/subpath2/index.html",
-            req.match_info_mut()
-        ));
+        let url = req.url().clone();
+        req.match_info_mut().set_url(url);
+        assert!(re.match_with_params(&mut req, 0, true));
         assert_eq!(&req.match_info()["name"], "test2");
     }
 

src/scope.rs

@@ -322,14 +322,13 @@ impl<S: 'static> Scope<S> {
 
 impl<S: 'static> RouteHandler<S> for Scope<S> {
     fn handle(&mut self, mut req: HttpRequest<S>) -> AsyncResult<HttpResponse> {
-        let path = unsafe { &*(&req.match_info()["tail"] as *const _) };
+        let tail = req.match_info().tail as usize;
 
         // recognize resources
         for &(ref pattern, ref resource) in self.resources.iter() {
-            if pattern.match_with_params(path, req.match_info_mut()) {
+            if pattern.match_with_params(&mut req, tail, false) {
                 let default = unsafe { &mut *self.default.as_ref().get() };
 
-                req.match_info_mut().remove("tail");
                 if self.middlewares.borrow().is_empty() {
                     let resource = unsafe { &mut *resource.get() };
                     return resource.handle(req, Some(default));
@@ -346,23 +345,18 @@ impl<S: 'static> RouteHandler<S> for Scope<S> {
 
         // nested scopes
         let len = req.prefix_len() as usize;
-        let path: &'static str = unsafe { &*(&req.path()[len..] as *const _) };
-
         'outer: for &(ref prefix, ref handler, ref filters) in &self.nested {
-            if let Some(prefix_len) =
-                prefix.match_prefix_with_params(path, req.match_info_mut())
-            {
+            if let Some(prefix_len) = prefix.match_prefix_with_params(&mut req, len) {
                 for filter in filters {
                     if !filter.check(&mut req) {
                         continue 'outer;
                     }
                 }
-                let prefix_len = len + prefix_len;
-                let path: &'static str =
-                    unsafe { &*(&req.path()[prefix_len..] as *const _) };
-
-                req.set_prefix_len(prefix_len as u16);
-                req.match_info_mut().set("tail", path);
+                let url = req.url().clone();
+                let prefix_len = (len + prefix_len) as u16;
+                req.set_prefix_len(prefix_len);
+                req.match_info_mut().set_tail(prefix_len);
+                req.match_info_mut().set_url(url);
 
                 let hnd: &mut RouteHandler<_> =
                     unsafe { (&mut *(handler.get())).as_mut() };

src/test.rs

@@ -408,7 +408,7 @@ pub struct TestRequest<S> {
     method: Method,
     uri: Uri,
     headers: HeaderMap,
-    params: Params<'static>,
+    params: Params,
     cookies: Option<Vec<Cookie<'static>>>,
     payload: Option<Payload>,
 }
@@ -508,7 +508,7 @@ impl<S: 'static> TestRequest<S> {
 
     /// Set request path pattern parameter
     pub fn param(mut self, name: &'static str, value: &'static str) -> Self {
-        self.params.add(name, value);
+        self.params.add_static(name, value);
         self
     }
 

src/uri.rs

@@ -1,4 +1,5 @@
 use http::Uri;
+use std::rc::Rc;
 
 #[allow(dead_code)]
 const GEN_DELIMS: &[u8] = b":/?#[]@";
@@ -34,10 +35,10 @@ lazy_static! {
     static ref DEFAULT_QUOTER: Quoter = { Quoter::new(b"@:", b"/+") };
 }
 
-#[derive(Default)]
+#[derive(Default, Clone, Debug)]
 pub(crate) struct Url {
     uri: Uri,
-    path: Option<String>,
+    path: Option<Rc<String>>,
 }
 
 impl Url {
@@ -95,7 +96,7 @@ impl Quoter {
         q
     }
 
-    pub fn requote(&self, val: &[u8]) -> Option<String> {
+    pub fn requote(&self, val: &[u8]) -> Option<Rc<String>> {
         let mut has_pct = 0;
         let mut pct = [b'%', 0, 0];
         let mut idx = 0;
@@ -145,7 +146,7 @@ impl Quoter {
         }
 
         if let Some(data) = cloned {
-            Some(unsafe { String::from_utf8_unchecked(data) })
+            Some(unsafe { Rc::new(String::from_utf8_unchecked(data)) })
         } else {
             None
         }