Remove Iron support

The Iron framework hasn't been updated in a long time. It still uses outdated versions of libraries like futures 0.1, hyper 0.12, url 1.7. We can speed up CI by removing it.
lambda-fairy · Sep 18, 2021 · a850d00 · a850d00
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diff --git a/docs/content/web-frameworks.md b/docs/content/web-frameworks.md
@@ -1,10 +1,9 @@
 # Web framework integration
 
 Maud includes support for these web frameworks:
-[Actix], [Iron], [Rocket], [Rouille], and [Tide].
+[Actix], [Rocket], [Rouille], and [Tide].
 
 [Actix]: https://actix.rs/
-[Iron]: http://ironframework.io
 [Rocket]: https://rocket.rs/
 [Rouille]: https://github.com/tomaka/rouille
 [Tide]: https://docs.rs/tide/
@@ -48,42 +47,6 @@ async fn main() -> io::Result<()> {
 }
 ```
 
-# Iron
-
-Iron support is available with the "iron" feature:
-
-```toml
-# ...
-[dependencies]
-maud = { version = "*", features = ["iron"] }
-# ...
-```
-
-With this feature enabled,
-you can then build a `Response` from a `Markup` object directly.
-Here's an example application using Iron and Maud:
-
-```rust,no_run
-use iron::prelude::*;
-use iron::status;
-use maud::html;
-
-fn main() {
-    Iron::new(|r: &mut Request| {
-        let markup = html! {
-            h1 { "Hello, world!" }
-            p {
-                "You are viewing the page at " (r.url)
-            }
-        };
-        Ok(Response::with((status::Ok, markup)))
-    }).http("localhost:3000").unwrap();
-}
-```
-
-`Markup` will set the content type of the response automatically,
-so you don't need to add it yourself.
-
 # Rocket
 
 Rocket works in a similar way,

diff --git a/doctest/Cargo.toml b/doctest/Cargo.toml
@@ -7,8 +7,7 @@ edition = "2018"
 [dependencies]
 actix-web = "3"
 ammonia = "3"
-iron = "0.6"
-maud = { path = "../maud", features = ["actix-web", "iron", "rocket", "tide", "axum"] }
+maud = { path = "../maud", features = ["actix-web", "rocket", "tide", "axum"] }
 pulldown-cmark = "0.8"
 rocket = "0.4"
 rouille = "3"

diff --git a/maud/Cargo.toml b/maud/Cargo.toml
@@ -20,7 +20,6 @@ actix-web = ["actix-web-dep", "futures-util"]
 [dependencies]
 maud_htmlescape = { version = "0.17.0", path = "../maud_htmlescape" }
 maud_macros = { version = "0.22.2", path = "../maud_macros" }
-iron = { version = ">= 0.5.1, < 0.7.0", optional = true }
 rocket = { version = ">= 0.3, < 0.5", optional = true }
 futures-util = { version = "0.3.0", optional = true, default-features = false }
 actix-web-dep = { package = "actix-web", version = ">= 2, < 4", optional = true, default-features = false }

diff --git a/maud/src/lib.rs b/maud/src/lib.rs
@@ -171,35 +171,6 @@ pub use maud_htmlescape::Escaper;
 /// ```
 pub const DOCTYPE: PreEscaped<&'static str> = PreEscaped("<!DOCTYPE html>");
 
-#[cfg(feature = "iron")]
-mod iron_support {
-    extern crate std;
-
-    use crate::PreEscaped;
-    use alloc::{boxed::Box, string::String};
-    use iron::{
-        headers::ContentType,
-        modifier::{Modifier, Set},
-        modifiers::Header,
-        response::{Response, WriteBody},
-    };
-    use std::io;
-
-    impl Modifier<Response> for PreEscaped<String> {
-        fn modify(self, response: &mut Response) {
-            response
-                .set_mut(Header(ContentType::html()))
-                .set_mut(Box::new(self) as Box<dyn WriteBody>);
-        }
-    }
-
-    impl WriteBody for PreEscaped<String> {
-        fn write_body(&mut self, body: &mut dyn io::Write) -> io::Result<()> {
-            self.0.write_body(body)
-        }
-    }
-}
-
 #[cfg(feature = "rocket")]
 mod rocket_support {
     extern crate std;