From c117e2dc276d19b022abccac0d252bd7fc1cd44e Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Thu, 20 Apr 2023 14:23:26 +0200
Subject: List contributors in changelog

Co-Authored-By: Martin Haug <mhaug@live.de>
---
 docs/src/html.rs | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

(limited to 'docs/src/html.rs')

diff --git a/docs/src/html.rs b/docs/src/html.rs
index b189a09c..d3566b07 100644
--- a/docs/src/html.rs
+++ b/docs/src/html.rs
@@ -1,3 +1,5 @@
+use std::ops::Range;
+
 use comemo::Prehashed;
 use md::escape::escape_html;
 use pulldown_cmark as md;
@@ -108,16 +110,21 @@ impl<'a> Handler<'a> {
 
             // Rewrite HTML images.
             md::Event::Html(html) if html.starts_with("<img") => {
-                let needle = "src=\"";
-                let offset = html.find(needle).unwrap() + needle.len();
-                let len = html[offset..].find('"').unwrap();
-                let range = offset..offset + len;
+                let range = html_attr_range(html, "src").unwrap();
                 let path = &html[range.clone()];
                 let mut buf = html.to_string();
                 buf.replace_range(range, &self.handle_image(path));
                 *html = buf.into();
             }
 
+            // Rewrite contributor sectinos.
+            md::Event::Html(html) if html.starts_with("<contributors") => {
+                let from = html_attr(html, "from").unwrap();
+                let to = html_attr(html, "to").unwrap();
+                let Some(output) = contributors(from, to) else { return false };
+                *html = output.raw.into();
+            }
+
             // Rewrite links.
             md::Event::Start(md::Tag::Link(ty, dest, _)) => {
                 assert!(
@@ -327,6 +334,19 @@ fn code_block(resolver: &dyn Resolver, lang: &str, text: &str) -> Html {
     resolver.example(highlighted, &frames)
 }
 
+/// Extract an attribute value from an HTML element.
+fn html_attr<'a>(html: &'a str, attr: &str) -> Option<&'a str> {
+    html.get(html_attr_range(html, attr)?)
+}
+
+/// Extract the range of the attribute value of an HTML element.
+fn html_attr_range(html: &str, attr: &str) -> Option<Range<usize>> {
+    let needle = format!("{attr}=\"");
+    let offset = html.find(&needle)? + needle.len();
+    let len = html[offset..].find('"')?;
+    Some(offset..offset + len)
+}
+
 /// World for example compilations.
 struct DocWorld(Source);
 
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