Implement encodeURIComponent filter.

js/test_cases/filters/main.dust

@@ -32,3 +32,9 @@ Special characters html escaping disabled and encodeURI: {special_characters|s|u
 Special characters encodeURI and html escaping disabled: {special_characters|u|s}{~n}
 Special characters encodeURI once: {special_characters|u}{~n}
 Special characters encodeURI twice: {special_characters|u|u}{~n}
+
+Special characters: {special_characters}{~n}
+Special characters html escaping disabled and encodeURIComponent: {special_characters|s|uc}{~n}
+Special characters encodeURIComponent and html escaping disabled: {special_characters|uc|s}{~n}
+Special characters encodeURIComponent once: {special_characters|uc}{~n}
+Special characters encodeURIComponent twice: {special_characters|uc|uc}{~n}

src/bin.rs

@@ -139,6 +139,26 @@ fn encode_uri(inp: &str) -> String {
     output
 }
 
+fn encode_uri_component(inp: &str) -> String {
+    // Adding 10% space from the original to avoid re-allocations by
+    // leaving room for escaped sequences.
+    let mut output = String::with_capacity(((inp.len() as f64) * 1.1) as usize);
+    inp.chars().for_each(|c| match c {
+        '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' | 'a' | 'b' | 'c' | 'd' | 'e'
+        | 'f' | 'g' | 'h' | 'i' | 'j' | 'k' | 'l' | 'm' | 'n' | 'o' | 'p' | 'q' | 'r' | 's'
+        | 't' | 'u' | 'v' | 'w' | 'x' | 'y' | 'z' | 'A' | 'B' | 'C' | 'D' | 'E' | 'F' | 'G'
+        | 'H' | 'I' | 'J' | 'K' | 'L' | 'M' | 'N' | 'O' | 'P' | 'Q' | 'R' | 'S' | 'T' | 'U'
+        | 'V' | 'W' | 'X' | 'Y' | 'Z' | '-' | '_' | '.' | '!' | '~' | '*' | '\'' | '(' | ')' => {
+            output.push(c)
+        }
+        _ => {
+            output.push('%');
+            output.push_str(&get_utf8_hex(c));
+        }
+    });
+    output
+}
+
 fn apply_filter(
     json_value: &serde_json::Value,
     filter: &Filter,
@@ -172,16 +192,20 @@ fn apply_filter(
         (_, Filter::JavascriptStringEncode) => Ok(serde_json::Value::String(javascript_escape(
             &json_value.render(&Vec::new())?,
         ))),
-        // EncodeUri filter
+        // EncodeURI filter
         (serde_json::Value::String(string), Filter::EncodeUri) => {
             Ok(serde_json::Value::String(encode_uri(string)))
         }
         (_, Filter::EncodeUri) => Ok(serde_json::Value::String(encode_uri(
             &json_value.render(&Vec::new())?,
         ))),
-
+        // EncodeURIComponent filter
-        // TODO: EncodeUriComponent
+        (serde_json::Value::String(string), Filter::EncodeUriComponent) => {
-        _ => panic!("Unimplemented"),
+            Ok(serde_json::Value::String(encode_uri_component(string)))
+        }
+        (_, Filter::EncodeUriComponent) => Ok(serde_json::Value::String(encode_uri_component(
+            &json_value.render(&Vec::new())?,
+        ))),
     }
 }