1 files changed, 77 insertions, 0 deletions
diff --git a/code/src/markdown.rs b/code/src/markdown.rs
new file mode 100644
index 0000000..c194a07
--- /dev/null
+++ b/code/src/markdown.rs
@@ -0,0 +1,77 @@
+use markdown::{Block, ListItem, Span};
+
+
+pub fn span_to_html(ss: Vec<Span>) -> String {
+    let mut out = String::new();
+    for s in ss {
+        out += match s {
+            Span::Break => format!("<br/>"),
+            Span::Text(t) => escape(&t),
+            Span::Code(c) => format!("<code>{}</code>", escape(&c)),
+            Span::Link(text, url, _) => {
+                format!("<a href=\"{}\">{}</a>", escape(&url), escape(&text))
+            }
+            Span::Image(_, _, _) => todo!(),
+            Span::Emphasis(c) => format!("<i>{}</i>", span_to_html(c)),
+            Span::Strong(c) => format!("<b>{}</b>", span_to_html(c)),
+        }
+        .as_str()
+    }
+    out
+}
+pub fn blocks_to_html(blocks: Vec<Block>) -> String {
+    let mut out = String::new();
+    for e in blocks {
+        out += match e {
+            Block::Header(text, level) => {
+                format!("<h{level}>{}</h{level}>", span_to_html(text))
+            }
+            Block::Paragraph(p) => format!("<p>{}</p>", span_to_html(p)),
+            Block::Blockquote(q) => format!("<quote>{}</quote>", blocks_to_html(q)),
+            Block::CodeBlock(_syntax, content) => {
+                format!("<code><pre>{}</pre></code>", escape(&content)) // TODO syntax highlighting
+            }
+            Block::OrderedList(els, _) => format!(
+                "<ol>{}</ol>",
+                els.into_iter()
+                    .map(|e| format!(
+                        "<li>{}</li>",
+                        match e {
+                            ListItem::Simple(s) => span_to_html(s),
+                            ListItem::Paragraph(b) => blocks_to_html(b),
+                        }
+                    ))
+                    .collect::<Vec<_>>()
+                    .join("")
+            ),
+            Block::UnorderedList(els) => {
+                format!(
+                    "<ul>{}</ul>",
+                    els.into_iter()
+                        .map(|e| format!(
+                            "<li>{}</li>",
+                            match e {
+                                ListItem::Simple(s) => span_to_html(s),
+                                ListItem::Paragraph(b) => blocks_to_html(b),
+                            }
+                        ))
+                        .collect::<Vec<_>>()
+                        .join("")
+                )
+            }
+            Block::Raw(r) => r,
+            Block::Hr => format!("<hr/>"),
+        }
+        .as_str();
+    }
+    out
+}
+
+pub fn escape(text: &str) -> String {
+    text.replace("&", "&amp;")
+        .replace("<", "&lt;")
+        .replace(">", "&gt;")
+        .replace("'", "&#8217;")
+        .replace("\"", "&quot;")
+}
+