From 0f07dd9048625365acd236e1be75088c73efc7a4 Mon Sep 17 00:00:00 2001
From: Alexander Kryvomaz <akryvomaz@gmail.com>
Date: Sun, 1 Jul 2018 15:53:44 +0300
Subject: [PATCH] bindings for decodeURIComponent

---
 src/js.rs                   |  7 +++++++
 tests/all/js_globals/mod.rs | 28 +++++++++++++++++++++++++++-
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/src/js.rs b/src/js.rs
index e10d8d88..465edac3 100644
--- a/src/js.rs
+++ b/src/js.rs
@@ -49,6 +49,13 @@ extern "C" {
     #[wasm_bindgen(catch, js_name = decodeURI)]
     pub fn decode_uri(encoded: &str) -> Result<JsString, JsValue>;
 
+    /// The decodeURIComponent() function decodes a Uniform Resource Identifier (URI)
+    /// component previously created by encodeURIComponent or by a similar routine.
+    /// 
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent
+    #[wasm_bindgen(catch, js_name = decodeURIComponent)]
+    pub fn decode_uri_component(encoded: &str) -> Result<JsString, JsValue>;
+
     /// The `encodeURI()` function encodes a Uniform Resource Identifier (URI)
     /// by replacing each instance of certain characters by one, two, three, or
     /// four escape sequences representing the UTF-8 encoding of the character
diff --git a/tests/all/js_globals/mod.rs b/tests/all/js_globals/mod.rs
index e33d9d6d..b365c6ce 100644
--- a/tests/all/js_globals/mod.rs
+++ b/tests/all/js_globals/mod.rs
@@ -6,8 +6,8 @@ mod Array;
 mod ArrayIterator;
 mod Boolean;
 mod Date;
-mod Function;
 mod Error;
+mod Function;
 mod JsString;
 mod Map;
 mod MapIterator;
@@ -47,6 +47,32 @@ fn decode_uri() {
         .test();
 }
 
+#[test]
+fn decode_uri_component() {
+    project()
+        .file(
+            "src/lib.rs",
+            r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn test() {
+                let x = js::decode_uri_component("%3Fx%3Dtest")
+                    .ok()
+                    .expect("should decode URI OK");
+                assert_eq!(String::from(x), "?x=test");
+
+                assert!(js::decode_uri_component("%E0%A4%A").is_err());
+            }
+        "#,
+        )
+        .test();
+}
+
 #[test]
 #[cfg(feature = "std")]
 fn encode_uri() {