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add header tags renderer

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yggverse 2026-03-09 02:40:42 +02:00
parent e653675fa1
commit c732964494
2 changed files with 59 additions and 27 deletions
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30
src/app/browser/window/tab/item/page/content/text/markdown.rs
View file

@ -108,8 +108,10 @@ impl Markdown {
t == 0 || t.is_multiple_of(2)
};
// Parse in-line markdown tags
// * keep order!
// Render markdown tags
// * keep in order!
tag::header(&buffer, &tag);
reference::image_link(&buffer, &tag, base, &link_color.0, &mut links);
reference::image(&buffer, &tag, base, &link_color.0, &mut links);
@ -201,30 +203,6 @@ impl Markdown {
}
}
// Is 1-6 level header
for level in 1..=6 {
if let Some(t) = header(
&buffer,
match level {
1 => &tag.h1,
2 => &tag.h2,
3 => &tag.h3,
4 => &tag.h4,
5 => &tag.h5,
6 => &tag.h6,
_ => unreachable!(),
},
line,
&H.repeat(level),
) {
// Update document title by tag, if not set before
if title.is_none() {
title = Some(t);
}
continue 'l;
}
}
// Is list
if let Some(value) = ggemtext::line::list::Gemtext::as_value(line) {

56
src/app/browser/window/tab/item/page/content/text/markdown/tag.rs
View file

@ -4,11 +4,15 @@ mod plain;
mod quote;
mod title;
use gtk::{TextTag, TextTagTable};
use gtk::{
TextBuffer, TextTag, TextTagTable,
prelude::{TextBufferExt, TextBufferExtManual},
};
use header::Header;
use list::List;
use plain::Plain;
use quote::Quote;
use regex::Regex;
use title::Title;
pub struct Tag {
@ -77,3 +81,53 @@ impl Tag {
}
}
}
// Headers `#`, `##`, etc.
const REGEX_HEADER: &str = r"(?m)^(?P<level>#{1,6})\s+(?P<title>.*)$";
/// Apply header `Tag` to given `TextBuffer`
pub fn header(buffer: &TextBuffer, tag: &Tag) {
let (start, end) = buffer.bounds();
let full_content = buffer.text(&start, &end, true).to_string();
let matches: Vec<_> = Regex::new(REGEX_HEADER)
.unwrap()
.captures_iter(&full_content)
.collect();
for cap in matches.into_iter().rev() {
let full_match = cap.get(0).unwrap();
let start_char_offset = full_content[..full_match.start()].chars().count() as i32;
let end_char_offset = full_content[..full_match.end()].chars().count() as i32;
let mut start_iter = buffer.iter_at_offset(start_char_offset);
let mut end_iter = buffer.iter_at_offset(end_char_offset);
buffer.delete(&mut start_iter, &mut end_iter);
match cap["level"].chars().count() {
1 => buffer.insert_with_tags(&mut start_iter, &cap["title"], &[&tag.h1]),
2 => buffer.insert_with_tags(&mut start_iter, &cap["title"], &[&tag.h2]),
3 => buffer.insert_with_tags(&mut start_iter, &cap["title"], &[&tag.h3]),
4 => buffer.insert_with_tags(&mut start_iter, &cap["title"], &[&tag.h4]),
5 => buffer.insert_with_tags(&mut start_iter, &cap["title"], &[&tag.h5]),
6 => buffer.insert_with_tags(&mut start_iter, &cap["title"], &[&tag.h6]),
_ => buffer.insert_with_tags(&mut start_iter, &cap["title"], &[]),
}
}
}
#[test]
fn test_regex_header() {
let cap: Vec<_> = Regex::new(REGEX_HEADER)
.unwrap()
.captures_iter(r"## Title ![alt](https://link.com)")
.collect();
let first = cap.get(0).unwrap();
assert_eq!(&first[0], "## Title ![alt](https://link.com)");
assert_eq!(&first["level"], "##");
assert_eq!(&first["title"], "Title ![alt](https://link.com)");
}