tetratto/crates/shared/src/markdown.rs

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Rust
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use ammonia::Builder;
use comrak::{Options, markdown_to_html};
use std::collections::HashSet;
/// Render markdown input into HTML
pub fn render_markdown(input: &str) -> String {
let mut options = Options::default();
options.extension.table = true;
options.extension.superscript = true;
options.extension.strikethrough = true;
options.extension.autolink = true;
options.extension.header_ids = Option::Some(String::new());
options.extension.tagfilter = true;
options.render.unsafe_ = true;
// options.render.escape = true;
options.parse.smart = false;
let html = markdown_to_html(input, &options);
let mut allowed_attributes = HashSet::new();
allowed_attributes.insert("id");
allowed_attributes.insert("class");
allowed_attributes.insert("ref");
allowed_attributes.insert("aria-label");
allowed_attributes.insert("lang");
allowed_attributes.insert("title");
allowed_attributes.insert("align");
allowed_attributes.insert("data-color");
allowed_attributes.insert("data-font-family");
Builder::default()
.generic_attributes(allowed_attributes)
.clean(&html)
.to_string()
.replace(
"src=\"",
"loading=\"lazy\" src=\"/api/v1/util/ext/image?img=",
)
.replace("--&gt;", "<align class=\"right\">")
.replace("-&gt;", "<align class=\"center\">")
.replace("&lt;-", "</align>")
}