Add htmlEscape and htmlUnescape filters

These filters use the html_escape crate (inspired by the use of the percent_encoding crate) to escape and unescape html.

Cargo.lock

@@ -495,6 +495,15 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7ebdb29d2ea9ed0083cd8cece49bbd968021bd99b0849edb4a9a7ee0fdf6a4e0"
 
+[[package]]
+name = "html-escape"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15315cfa9503e9aa85a477138eff76a1b203a430703548052c330b69d8d8c205"
+dependencies = [
+ "utf8-width",
+]
+
 [[package]]
 name = "hurl"
 version = "2.0.0-SNAPSHOT"
@@ -512,6 +521,7 @@ dependencies = [
  "glob",
  "hex",
  "hex-literal",
+ "html-escape",
  "hurl_core",
  "indexmap",
  "libflate",
@@ -1182,6 +1192,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "utf8-width"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5190c9442dcdaf0ddd50f37420417d219ae5261bbf5db120d0f9bab996c9cba1"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"

packages/hurl/Cargo.toml

@@ -29,6 +29,7 @@ float-cmp = "0.9.0"
 glob = "0.3.0"
 hex = "0.4.3"
 hex-literal = "0.3.4"
+html-escape = "0.2.12"
 hurl_core = { version = "2.0.0-SNAPSHOT", path = "../hurl_core" }
 indexmap = "1.9.2"
 libflate = "1.2.0"

packages/hurl/src/runner/filter.rs

@@ -47,6 +47,8 @@ fn eval_filter(
         FilterValue::Count {} => eval_count(value, &filter.source_info),
         FilterValue::UrlEncode { .. } => eval_url_encode(value, &filter.source_info),
         FilterValue::UrlDecode { .. } => eval_url_decode(value, &filter.source_info),
+        FilterValue::HtmlEscape { .. } => eval_html_encode(value, &filter.source_info),
+        FilterValue::HtmlUnescape { .. } => eval_html_decode(value, &filter.source_info),
         FilterValue::ToInt { .. } => eval_to_int(value, &filter.source_info),
     }
 }
@@ -153,6 +155,35 @@ fn eval_url_decode(value: &Value, source_info: &SourceInfo) -> Result<Value, Err
     }
 }
 
+fn eval_html_encode(value: &Value, source_info: &SourceInfo) -> Result<Value, Error> {
+    match value {
+        Value::String(value) => {
+            let mut enco = String::from(value);
+            let encoded = html_escape::encode_text_to_string(value, &mut enco);
+            Ok(Value::String(encoded.to_string()))
+        }
+        v => Err(Error {
+            source_info: source_info.clone(),
+            inner: RunnerError::FilterInvalidInput(v._type()),
+            assert: false,
+        }),
+    }
+}
+
+fn eval_html_decode(value: &Value, source_info: &SourceInfo) -> Result<Value, Error> {
+    match value {
+        Value::String(value) => {
+            let decoded = html_escape::decode_html_entities(value).to_string();
+            Ok(Value::String(decoded))
+        }
+        v => Err(Error {
+            source_info: source_info.clone(),
+            inner: RunnerError::FilterInvalidInput(v._type()),
+            assert: false,
+        }),
+    }
+}
+
 fn eval_to_int(value: &Value, source_info: &SourceInfo) -> Result<Value, Error> {
     match value {
         Value::Integer(v) => Ok(Value::Integer(*v)),

packages/hurl_core/src/ast/core.rs

@@ -877,5 +877,7 @@ pub enum FilterValue {
     },
     UrlEncode {},
     UrlDecode {},
+    HtmlEscape {},
+    HtmlUnescape {},
     ToInt {},
 }

packages/hurl_core/src/format/html.rs

@@ -1083,6 +1083,12 @@ impl Htmlable for FilterValue {
             }
             FilterValue::UrlEncode {} => "<span class=\"filter-type\">urlEncode</span>".to_string(),
             FilterValue::UrlDecode {} => "<span class=\"filter-type\">urlDecode</span>".to_string(),
+            FilterValue::HtmlEscape {} => {
+                "<span class=\"filter-type\">htmlEscape</span>".to_string()
+            }
+            FilterValue::HtmlUnescape {} => {
+                "<span class=\"filter-type\">htmlUnescape</span>".to_string()
+            }
             FilterValue::ToInt {} => "<span class=\"filter-type\">toInt</span>".to_string(),
         }
     }

packages/hurl_core/src/parser/filter.rs

@@ -54,6 +54,8 @@ pub fn filter(reader: &mut Reader) -> ParseResult<'static, Filter> {
             regex_filter,
             url_encode_filter,
             url_decode_filter,
+            html_encode_filter,
+            html_decode_filter,
             to_int_filter,
         ],
         reader,
@@ -98,6 +100,16 @@ fn url_decode_filter(reader: &mut Reader) -> ParseResult<'static, FilterValue> {
     Ok(FilterValue::UrlDecode {})
 }
 
+fn html_encode_filter(reader: &mut Reader) -> ParseResult<'static, FilterValue> {
+    try_literal("htmlEscape", reader)?;
+    Ok(FilterValue::HtmlEscape {})
+}
+
+fn html_decode_filter(reader: &mut Reader) -> ParseResult<'static, FilterValue> {
+    try_literal("htmlUnescape", reader)?;
+    Ok(FilterValue::HtmlUnescape {})
+}
+
 fn to_int_filter(reader: &mut Reader) -> ParseResult<'static, FilterValue> {
     try_literal("toInt", reader)?;
     Ok(FilterValue::ToInt {})