wip: quick and dumb implementation of toc
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a4b67df515
commit
2400d33f56
2 changed files with 99 additions and 9 deletions
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@ -1,8 +1,10 @@
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use crate::misc::date::Date;
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use base64::engine::general_purpose;
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use base64::Engine;
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use comrak::nodes::{AstNode, NodeValue};
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use comrak::{format_html, parse_document, Arena, ComrakOptions, ListStyleType, Options};
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use comrak::nodes::{AstNode, NodeCode, NodeMath, NodeValue};
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use comrak::{
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format_html, parse_document, Anchorizer, Arena, ComrakOptions, ListStyleType, Options,
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};
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use lol_html::html_content::ContentType;
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use lol_html::{element, rewrite_str, HtmlRewriter, RewriteStrSettings, Settings};
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use ramhorns::Content;
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@ -21,7 +23,7 @@ pub struct FileMetadataBlog {
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pub description: Option<String>,
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pub publish: Option<bool>,
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pub tags: Option<Vec<Tag>>,
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pub toc: Option<bool>,
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pub toc: Option<String>,
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}
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/// A tag, related to post blog
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@ -316,10 +318,15 @@ pub fn get_metadata<'a>(root: &'a AstNode<'a>, mtype: &TypeFileMetadata) -> File
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.find_map(|node| match &node.data.borrow().value {
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// Extract metadata from frontmatter
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NodeValue::FrontMatter(text) => Some(match mtype {
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TypeFileMetadata::Blog => FileMetadata {
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blog: Some(deserialize_metadata(text)),
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TypeFileMetadata::Blog => {
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let mut metadata: FileMetadataBlog = deserialize_metadata(text);
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metadata.toc = toc_to_html(&generate_toc(root));
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FileMetadata {
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blog: Some(metadata),
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..FileMetadata::default()
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},
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}
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}
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TypeFileMetadata::Contact => {
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let mut metadata: FileMetadataContact = deserialize_metadata(text);
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@ -488,3 +495,87 @@ fn mail_obfuscation(html: &str) -> (String, bool) {
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(new_html, is_modified)
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}
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}
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#[derive(Debug)]
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struct TOCEntry {
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id: String,
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title: String,
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depth: u8,
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}
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fn generate_toc<'a>(root: &'a AstNode<'a>) -> Vec<TOCEntry> {
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/// See <https://github.com/kivikakk/comrak/blob/b67d406d3b101b93539c37a1ca75bff81ff8c149/src/html.rs#L446>
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fn collect_text<'a>(node: &'a AstNode<'a>, output: &mut String) {
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match node.data.borrow().value {
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NodeValue::Text(ref literal)
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| NodeValue::Code(NodeCode { ref literal, .. })
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| NodeValue::Math(NodeMath { ref literal, .. }) => {
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*output = literal.to_string();
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}
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_ => {
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for n in node.children() {
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if !output.is_empty() {
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break;
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}
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collect_text(n, output);
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}
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}
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}
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}
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let mut toc = vec![];
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let mut anchorizer = Anchorizer::new();
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// Collect headings first to avoid mutable borrow conflicts
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let headings: Vec<_> = root
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.children()
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.filter_map(|node| {
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if let NodeValue::Heading(ref nch) = &node.data.borrow().value {
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Some((*nch, node))
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} else {
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None
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}
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})
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.collect();
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// Now process each heading
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for (nch, node) in headings {
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let mut title = String::with_capacity(20);
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collect_text(node, &mut title);
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toc.push(TOCEntry {
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id: anchorizer.anchorize(title.clone()),
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title,
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depth: nch.level,
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});
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}
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toc
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}
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fn toc_to_html(toc: &[TOCEntry]) -> Option<String> {
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if toc.is_empty() {
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return None;
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}
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let mut html = Vec::with_capacity(20 + 20 * toc.len());
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html.extend_from_slice(b"<ul>");
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for entry in toc {
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// TODO: Use depth
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html.extend_from_slice(
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format!(
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"<li><a href=\"{}\">{} (dbg/depth/{})</a></li>",
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entry.id, entry.title, entry.depth
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)
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.as_bytes(),
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);
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}
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html.extend_from_slice(b"</ul>");
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Some(String::from_utf8(html).unwrap())
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}
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@ -255,8 +255,7 @@ fn get_post(
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None => default.2,
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},
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match &data.metadata.info.blog.as_ref().unwrap().toc {
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// TODO: Generate TOC
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Some(true) => String::new(),
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Some(toc) => toc.into(),
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_ => default.3,
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},
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),
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