support HEAD param in http interpretation

README.md

@@ -34,7 +34,6 @@ Print all services with inaccessible images in a Docker compose file:
 # shell
 hial './config.yaml^yaml/services/*[ /image^split[":"]/[0]^http[HEAD]@status/code>=400 ]'
 # 🚧 todo: split interpretation (regex[( ([^:]*): )*]
-# 🚧 todo: HEAD param for http
 ```
 
 ```rust
@@ -79,7 +78,6 @@ Change the user's docker configuration:
 ```bash
 # shell
 hial '~/.docker/config.json^json/auths/docker.io/username = "newuser"'
-# 🚧 todo: support ~
 ```
 ```rust
 // rust

src/interpretations/http.rs

@@ -69,11 +69,13 @@ impl Cell {
         let value_cow = value.as_cow_str();
         let url = value_cow.as_ref();
 
-        let response = Client::builder()
-            .user_agent("hial")
-            .build()?
-            .get(url)
-            .send()?;
+        let client = Client::builder().user_agent("hial").build()?;
+        let request = if params.contains_key(&Value::Str("HEAD")) {
+            client.head(url)
+        } else {
+            client.get(url)
+        };
+        let response = request.send()?;
 
         let mut headers = IndexMap::<String, Vec<String>>::new();
         for (k, v) in response.headers().iter() {

src/tests/http.rs

@@ -0,0 +1,18 @@
+use crate::{api::*, pprint::pprint, utils::log::set_verbose};
+
+#[test]
+fn test_http_basic() -> Res<()> {
+    set_verbose(true);
+
+    let cell = Xell::new("http://api.github.com^http");
+    pprint(&cell, 0, 0);
+    assert_eq!(cell.to("@status/code").read().value()?, Value::from(200));
+    assert!(cell.read().value()?.as_cow_str().len() > 10);
+
+    let cell = Xell::new("http://api.github.com^http[HEAD]");
+    pprint(&cell, 0, 0);
+    assert_eq!(cell.to("@status/code").read().value()?, Value::from(200));
+    assert!(cell.read().value()?.as_cow_str().len() == 0);
+
+    Ok(())
+}

src/tests/mod.rs

@@ -1,4 +1,5 @@
 mod fs;
+mod http;
 mod ideals;
 mod json;
 mod nested;