Cache & Optimize Woodpecker CI (#3450)

[lemmy.git] / crates / utils / src / utils / markdown.rs

diff --git a/crates/utils/src/utils/markdown.rs b/crates/utils/src/utils/markdown.rs
index a5ee535718fb87cdadfc0cedf97f6445ad599cf6..5f851589bdb500bfd93887dfff51d7d4ea9f89b8 100644 (file)
--- a/crates/utils/src/utils/markdown.rs
+++ b/crates/utils/src/utils/markdown.rs
@@ -1,3 +1,86 @@
+use markdown_it::MarkdownIt;
+use once_cell::sync::Lazy;
+
+mod spoiler_rule;
+
+static MARKDOWN_PARSER: Lazy<MarkdownIt> = Lazy::new(|| {
+  let mut parser = MarkdownIt::new();
+  markdown_it::plugins::cmark::add(&mut parser);
+  markdown_it::plugins::extra::add(&mut parser);
+  spoiler_rule::add(&mut parser);
+
+  parser
+});
+
 pub fn markdown_to_html(text: &str) -> String {
-  comrak::markdown_to_html(text, &comrak::ComrakOptions::default())
+  MARKDOWN_PARSER.parse(text).xrender()
+}
+
+#[cfg(test)]
+mod tests {
+  #![allow(clippy::unwrap_used)]
+  #![allow(clippy::indexing_slicing)]
+
+  use crate::utils::markdown::markdown_to_html;
+
+  #[test]
+  fn test_basic_markdown() {
+    let tests: Vec<_> = vec![
+      (
+        "headings",
+        "# h1\n## h2\n### h3\n#### h4\n##### h5\n###### h6",
+        "<h1>h1</h1>\n<h2>h2</h2>\n<h3>h3</h3>\n<h4>h4</h4>\n<h5>h5</h5>\n<h6>h6</h6>\n"
+      ),
+      (
+        "line breaks",
+        "First\rSecond",
+        "<p>First\nSecond</p>\n"),
+      (
+        "emphasis",
+        "__bold__ **bold** *italic* ***bold+italic***",
+        "<p><strong>bold</strong> <strong>bold</strong> <em>italic</em> <em><strong>bold+italic</strong></em></p>\n"
+      ),
+      (
+        "blockquotes",
+        "> #### Hello\n > \n > - Hola\n > - 안영 \n>> Goodbye\n",
+        "<blockquote>\n<h4>Hello</h4>\n<ul>\n<li>Hola</li>\n<li>안영</li>\n</ul>\n<blockquote>\n<p>Goodbye</p>\n</blockquote>\n</blockquote>\n"
+      ),
+      (
+        "lists (ordered, unordered)",
+        "1. pen\n2. apple\n3. apple pen\n- pen\n- pineapple\n- pineapple pen",
+        "<ol>\n<li>pen</li>\n<li>apple</li>\n<li>apple pen</li>\n</ol>\n<ul>\n<li>pen</li>\n<li>pineapple</li>\n<li>pineapple pen</li>\n</ul>\n"
+      ),
+      (
+        "code and code blocks",
+        "this is my amazing `code snippet` and my amazing ```code block```",
+        "<p>this is my amazing <code>code snippet</code> and my amazing <code>code block</code></p>\n"
+      ),
+      (
+        "links",
+        "[Lemmy](https://join-lemmy.org/ \"Join Lemmy!\")",
+        "<p><a href=\"https://join-lemmy.org/\" title=\"Join Lemmy!\">Lemmy</a></p>\n"
+      ),
+      (
+        "images",
+        "![My linked image](https://image.com \"image alt text\")",
+        "<p><img src=\"https://image.com\" alt=\"My linked image\" title=\"image alt text\" /></p>\n"
+      ),
+      // Ensure any custom plugins are added to 'MARKDOWN_PARSER' implementation.
+      (
+        "basic spoiler",
+        "::: spoiler click to see more\nhow spicy!\n:::\n",
+        "<details><summary>click to see more</summary><p>how spicy!\n</p></details>\n"
+      ),
+    ];
+
+    tests.iter().for_each(|&(msg, input, expected)| {
+      let result = markdown_to_html(input);
+
+      assert_eq!(
+        result, expected,
+        "Testing {}, with original input '{}'",
+        msg, input
+      );
+    });
+  }
 }