Basic web scraperHEADmain

1 files changed, 29 insertions, 1 deletions

diff --git a/hello-async/src/main.rs b/hello-async/src/main.rs
index e7a11a9..772bc7b 100644
--- a/hello-async/src/main.rs
+++ b/hello-async/src/main.rs
@@ -1,3 +1,31 @@
+use trpl::{Either, Html};
+
 fn main() {
-    println!("Hello, world!");
+    let args: Vec<String> = std::env::args().collect();
+
+    trpl::block_on(async {
+        let title_fut_1 = page_title(&args[1]);
+        let title_fut_2 = page_title(&args[2]);
+
+        let (url, maybe_title) = 
+            match trpl::select(title_fut_1, title_fut_2).await {
+                Either::Left(left) => left,
+                Either::Right(right) => right,
+            };
+
+        println!("{url} returned first");
+        match maybe_title {
+            Some(title) => println!("Its page title was: '{title}'"),
+            None => println!("It had no title"),
+        }
+    })
 }
+
+async fn page_title(url: &str) -> (&str, Option<String>) {
+    let response_text = trpl::get(url).await.text().await;
+    let title = Html::parse(&response_text)
+        .select_first("title")
+        .map(|title| title.inner_html());
+    (url, title)
+}
+