Add dynamic-assets feature to facilitate rapid feedback when working on the assets

Cargo.toml

@@ -79,6 +79,9 @@ git = "https://github.com/maghoff/pulldown-cmark.git"
 indoc = "0.2"
 matches = "0.1"
 
+[features]
+dynamic-assets = []
+
 [profile]
 
 [profile.release]

src/assets.rs

@@ -1,30 +1,82 @@
-use futures::Future;
-use web::{Resource, ResponseFuture};
+#[cfg(not(feature="dynamic-assets"))]
+mod static_assets {
+    use std::collections::HashMap;
+    use futures::Future;
+    use web::{Resource, ResponseFuture};
 
-// The CSS should be built to a single CSS file at compile time
-#[derive(StaticResource)]
-#[filename = "assets/themes.css"]
-#[mime = "text/css"]
-pub struct ThemesCss;
+    // The CSS should be built to a single CSS file at compile time
+    #[derive(StaticResource)]
+    #[filename = "assets/themes.css"]
+    #[mime = "text/css"]
+    pub struct ThemesCss;
 
-#[derive(StaticResource)]
-#[filename = "assets/style.css"]
-#[mime = "text/css"]
-pub struct StyleCss;
+    #[derive(StaticResource)]
+    #[filename = "assets/style.css"]
+    #[mime = "text/css"]
+    pub struct StyleCss;
 
-#[derive(StaticResource)]
-#[filename = "assets/script.js"]
-#[mime = "application/javascript"]
-pub struct ScriptJs;
+    #[derive(StaticResource)]
+    #[filename = "assets/script.js"]
+    #[mime = "application/javascript"]
+    pub struct ScriptJs;
 
-#[derive(StaticResource)]
-#[filename = "assets/search.js"]
-#[mime = "application/javascript"]
-pub struct SearchJs;
+    #[derive(StaticResource)]
+    #[filename = "assets/search.js"]
+    #[mime = "application/javascript"]
+    pub struct SearchJs;
 
-// SIL Open Font License 1.1: http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL
-// Copyright 2015 The Amatic SC Project Authors (contact@sansoxygen.com)
-#[derive(StaticResource)]
-#[filename = "assets/amatic-sc-v9-latin-regular.woff"]
-#[mime = "application/font-woff"]
-pub struct AmaticFont;
+    // SIL Open Font License 1.1: http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL
+    // Copyright 2015 The Amatic SC Project Authors (contact@sansoxygen.com)
+    // #[derive(StaticResource)]
+    // #[filename = "assets/amatic-sc-v9-latin-regular.woff"]
+    // #[mime = "application/font-woff"]
+    // pub struct AmaticFont;
+
+    type BoxResource = Box<Resource + Sync + Send>;
+    type ResourceFn = Box<Fn() -> BoxResource + Sync + Send>;
+    lazy_static! {
+        pub static ref ASSETS_MAP: HashMap<&'static str, ResourceFn> = hashmap!{
+            // The CSS should be built to a single CSS file at compile time
+            ThemesCss::resource_name() =>
+                Box::new(|| Box::new(ThemesCss) as BoxResource) as ResourceFn,
+
+            StyleCss::resource_name() =>
+                Box::new(|| Box::new(StyleCss) as BoxResource) as ResourceFn,
+
+            ScriptJs::resource_name() =>
+                Box::new(|| Box::new(ScriptJs) as BoxResource) as ResourceFn,
+
+            SearchJs::resource_name() =>
+                Box::new(|| Box::new(SearchJs) as BoxResource) as ResourceFn,
+        };
+    }
+}
+
+#[cfg(not(feature="dynamic-assets"))]
+pub use self::static_assets::*;
+
+#[cfg(feature="dynamic-assets")]
+mod dynamic_assets {
+    pub struct ThemesCss;
+    impl ThemesCss {
+        pub fn resource_name() -> &'static str { "themes.css" }
+    }
+
+    pub struct StyleCss;
+    impl StyleCss {
+        pub fn resource_name() -> &'static str { "style.css" }
+    }
+
+    pub struct ScriptJs;
+    impl ScriptJs {
+        pub fn resource_name() -> &'static str { "script.js" }
+    }
+
+    pub struct SearchJs;
+    impl SearchJs {
+        pub fn resource_name() -> &'static str { "search.js" }
+    }
+}
+
+#[cfg(feature="dynamic-assets")]
+pub use self::dynamic_assets::*;

src/build_config.rs

@@ -7,6 +7,9 @@ pub const PROJECT_NAME: &str = env!("CARGO_PKG_NAME");
 
 const SOFT_HYPHEN: &str = "\u{00AD}";
 
+#[cfg(all(not(debug_assertions), feature="dynamic-assets"))]
+compile_error!("dynamic-assets must not be used for production");
+
 lazy_static! {
     pub static ref VERSION: String = || -> String {
         let mut components = Vec::<String>::new();
@@ -17,6 +20,9 @@ lazy_static! {
         #[cfg(test)]
         components.push("test".into());
 
+        #[cfg(feature="dynamic-assets")]
+        components.push("dynamic-assets".into());
+
         if let None = option_env!("CONTINUOUS_INTEGRATION") {
             components.push("local-build".into());
         }

src/resources/mod.rs

@@ -7,6 +7,7 @@ mod changes_resource;
 mod diff_resource;
 mod html_resource;
 mod new_article_resource;
+mod read_only_resource;
 mod search_resource;
 mod sitemap_resource;
 mod temporary_redirect_resource;
@@ -18,6 +19,7 @@ pub use self::changes_resource::{ChangesLookup, ChangesResource};
 pub use self::diff_resource::{DiffLookup, DiffResource};
 pub use self::html_resource::HtmlResource;
 pub use self::new_article_resource::NewArticleResource;
+pub use self::read_only_resource::ReadOnlyResource;
 pub use self::search_resource::SearchLookup;
 pub use self::sitemap_resource::SitemapResource;
 pub use self::temporary_redirect_resource::TemporaryRedirectResource;

src/resources/read_only_resource.rs

@@ -0,0 +1,38 @@
+use futures::Future;
+use hyper::header::{ContentType, ContentLength, CacheControl, CacheDirective};
+use hyper::server::*;
+use hyper::StatusCode;
+
+use web::{Resource, ResponseFuture};
+
+#[allow(unused)]
+pub struct ReadOnlyResource {
+    pub content_type: ::hyper::mime::Mime,
+    pub body: Vec<u8>,
+}
+
+impl Resource for ReadOnlyResource {
+    fn allow(&self) -> Vec<::hyper::Method> {
+        use ::hyper::Method::*;
+        vec![Options, Head, Get]
+    }
+
+    fn head(&self) -> ResponseFuture {
+        Box::new(::futures::finished(Response::new()
+            .with_status(StatusCode::Ok)
+            .with_header(ContentType(self.content_type.clone()))
+            .with_header(CacheControl(vec![
+                CacheDirective::MustRevalidate,
+                CacheDirective::NoStore,
+            ]))
+        ))
+    }
+
+    fn get(self: Box<Self>) -> ResponseFuture {
+        Box::new(self.head().map(move |head|
+            head
+                .with_header(ContentLength(self.body.len() as u64))
+                .with_body(self.body.clone())
+        ))
+    }
+}

src/wiki_lookup.rs

@@ -8,29 +8,16 @@ use percent_encoding::percent_decode;
 use slug::slugify;
 
 use resources::*;
-use assets::*;
 use state::State;
 use web::{Lookup, Resource};
 
+#[allow(unused)]
+use assets::*;
+
 type BoxResource = Box<Resource + Sync + Send>;
 type ResourceFn = Box<Fn() -> BoxResource + Sync + Send>;
 
 lazy_static! {
-    static ref ASSETS_MAP: HashMap<&'static str, ResourceFn> = hashmap!{
-        // The CSS should be built to a single CSS file at compile time
-        ThemesCss::resource_name() =>
-            Box::new(|| Box::new(ThemesCss) as BoxResource) as ResourceFn,
-
-        StyleCss::resource_name() =>
-            Box::new(|| Box::new(StyleCss) as BoxResource) as ResourceFn,
-
-        ScriptJs::resource_name() =>
-            Box::new(|| Box::new(ScriptJs) as BoxResource) as ResourceFn,
-
-        SearchJs::resource_name() =>
-            Box::new(|| Box::new(SearchJs) as BoxResource) as ResourceFn,
-    };
-
     static ref LICENSES_MAP: HashMap<&'static str, ResourceFn> = hashmap!{
         "bsd-3-clause" => Box::new(|| Box::new(
             HtmlResource::new(Some("../"), "The 3-Clause BSD License", include_str!("licenses/bsd-3-clause.html"))
@@ -85,6 +72,35 @@ fn map_lookup(map: &HashMap<&str, ResourceFn>, path: &str) ->
     }
 }
 
+#[allow(unused)]
+fn fs_lookup(root: &str, path: &str) ->
+    FutureResult<Option<BoxResource>, Box<::std::error::Error + Send + Sync>>
+{
+    use std::fs::File;
+    use std::io::prelude::*;
+
+    let extension = path.rsplitn(2, ".").next();
+
+    let content_type = match extension {
+        Some("css") => "text/css",
+        Some("js") => "application/javascript",
+        Some("woff") => "application/font-woff",
+        _ => "application/binary",
+    }.parse().unwrap();
+
+    let mut filename = root.to_string();
+    filename.push_str(path);
+
+    let mut f = File::open(&filename)
+        .unwrap_or_else(|_| panic!(format!("Not found: {}", filename)));
+
+    let mut body = Vec::new();
+    f.read_to_end(&mut body)
+        .expect("Unable to read file");
+
+    finished(Some(Box::new(ReadOnlyResource { content_type, body })))
+}
+
 impl WikiLookup {
     pub fn new(state: State, show_authors: bool) -> WikiLookup {
         let changes_lookup = ChangesLookup::new(state.clone(), show_authors);
@@ -168,6 +184,10 @@ impl WikiLookup {
                 Box::new(finished(Some(Box::new(AboutResource::new()) as BoxResource))),
             ("_about", Some(license)) =>
                 Box::new(map_lookup(&LICENSES_MAP, license)),
+            #[cfg(feature="dynamic-assets")]
+            ("_assets", Some(asset)) =>
+                Box::new(fs_lookup(concat!(env!("CARGO_MANIFEST_DIR"), "/assets/"), asset)),
+            #[cfg(not(feature="dynamic-assets"))]
             ("_assets", Some(asset)) =>
                 Box::new(map_lookup(&ASSETS_MAP, asset)),
             ("_by_id", Some(tail)) =>