Create DEFAULT_MAX_TARGETS constant

Author: GuillaumeGomez

src/docbuilder/limits.rs

@@ -18,7 +18,7 @@ impl Default for Limits {
         Self {
             memory: 3 * 1024 * 1024 * 1024,        // 3 GB
             timeout: Duration::from_secs(15 * 60), // 15 minutes
-            targets: 10,
+            targets: crate::DEFAULT_MAX_TARGETS,
             networking: false,
             max_log_size: 100 * 1024, // 100 KB
         }

src/lib.rs

@@ -62,3 +62,6 @@ pub const BUILD_VERSION: &str = concat!(
 /// Example:
 /// `s3://rust-docs-rs//rustdoc-static/something.css`
 pub const RUSTDOC_STATIC_STORAGE_PREFIX: &str = "/rustdoc-static/";
+
+/// Maximum number of targets allowed for a crate to be documented on.
+pub const DEFAULT_MAX_TARGETS: usize = 10;

src/web/page/web_page.rs

@@ -93,8 +93,12 @@ macro_rules! impl_axum_webpage {
 
 
                 response.extensions_mut().insert($crate::web::page::web_page::DelayedTemplateRender {
-                    context: ::tera::Context::from_serialize(&self)
-                        .expect("could not create tera context from web-page"),
+                    context: {
+                        let mut c = ::tera::Context::from_serialize(&self)
+                            .expect("could not create tera context from web-page");
+                        c.insert("DEFAULT_MAX_TARGETS", &$crate::DEFAULT_MAX_TARGETS);
+                        c
+                    },
                     template: {
                         let template: fn(&Self) -> ::std::borrow::Cow<'static, str> = $template;
                         template(&self).to_string()

src/web/rustdoc.rs

@@ -317,7 +317,8 @@ impl RustdocPage {
         let is_latest_url = self.is_latest_url;
 
         // Build the page of documentation
-        let ctx = tera::Context::from_serialize(self).context("error creating tera context")?;
+        let mut ctx = tera::Context::from_serialize(self).context("error creating tera context")?;
+        ctx.insert("DEFAULT_MAX_TARGETS", &crate::DEFAULT_MAX_TARGETS);
 
         // Extract the head and body of the rustdoc file so that we can insert it into our own html
         // while logging OOM errors from html rewriting

templates/rustdoc/topbar.html

@@ -209,8 +209,8 @@
 
         {# Build the dropdown list showing available targets #}
         <ul class="pure-menu-children" id="platforms">
-            {%- if metadata.doc_targets|length < 6 -%}
-                {%- include "rustdoc/targets.tml" -%}
+            {%- if metadata.doc_targets|length < DEFAULT_MAX_TARGETS -%}
+                {%- include "rustdoc/platforms.html" -%}
             {%- else -%}
                 <span class="rotate">{{ "spinner" | fas }}</span>
             {%- endif -%}