wip: quick and dumb implementation of toc

This commit is contained in:
Mylloon 2024-06-16 15:31:44 +02:00 committed by Anri Kennel
parent a4b67df515
commit 2400d33f56
2 changed files with 99 additions and 9 deletions

View file

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

View file

@ -255,8 +255,7 @@ fn get_post(
None => default.2,
},
match &data.metadata.info.blog.as_ref().unwrap().toc {
// TODO: Generate TOC
Some(true) => String::new(),
Some(toc) => toc.into(),
_ => default.3,
},
),