replace lazy_static with once_cell

Cargo.toml

@@ -8,7 +8,7 @@ version = "0.1.0"
 [dependencies]
 actix-web = "4.3.1"
 image = "0.24.6"
-lazy_static = "1.4.0"
+once_cell = "1.17.1"
 qstring = "0.7.2"
 regex = "1.7.3"
 reqwest = {version = "0.11.15", features = ["rustls-tls", "stream", "brotli", "gzip"], default-features = false}

src/main.rs

@@ -4,7 +4,7 @@ use std::error::Error;
 use actix_web::{App, HttpRequest, HttpResponse, HttpResponseBuilder, HttpServer, web};
 use actix_web::http::Method;
 use image::EncodableLayout;
-use lazy_static::lazy_static;
+use once_cell::sync::Lazy;
 use qstring::QString;
 use regex::Regex;
 use reqwest::{Client, Request, Url};
@@ -27,14 +27,12 @@ async fn main() -> std::io::Result<()> {
     }.run().await
 }
 
-lazy_static!(
+static RE_DOMAIN: Lazy<Regex> = Lazy::new(|| Regex::new(r"^(?:[a-z\d.-]*\.)?((?:[a-z\d-]*)\.(?:[a-z\d-]*))$").unwrap());
-    static ref RE_DOMAIN: Regex = Regex::new(r"^(?:[a-z\d\.-]*\.)?((?:[a-z\d-]*)\.(?:[a-z\d-]*))$").unwrap();
+static RE_MANIFEST: Lazy<Regex> = Lazy::new(|| Regex::new("(?m)URI=\"([^\"]+)\"").unwrap());
-    static ref RE_MANIFEST: Regex = Regex::new("(?m)URI=\"([^\"]+)\"").unwrap();
+static RE_DASH_MANIFEST: Lazy<Regex> = Lazy::new(|| Regex::new("BaseURL>(https://[^<]+)</BaseURL").unwrap());
-    static ref RE_DASH_MANIFEST: Regex = Regex::new("BaseURL>(https://[^<]+)</BaseURL").unwrap();
-);
 
-lazy_static!(
+
-    static ref CLIENT: Client = {
+static CLIENT: Lazy<Client> = Lazy::new(|| {
     let builder = Client::builder()
         .user_agent("Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0");
 
@@ -46,8 +44,7 @@ lazy_static!(
     } else {
         builder.build().unwrap()
     }
-    };
+});
-);
 
 const ALLOWED_DOMAINS: [&str; 7] = [
     "youtube.com",