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pub mod atom;
pub mod helper;
use self::helper::{article_metadata, get_articles};
use crate::error::MyResult;
use crate::layout::{DynScaffold, Scaffold};
use crate::uri;
use anyhow::anyhow;
pub use atom::r_blog_atom;
use atom::rocket_uri_macro_r_blog_atom;
use latex2mathml::DisplayStyle;
use markdown::mdast::Node;
use markup::{raw, DynRender};
use rocket::{get, response::Redirect};
use std::{path::PathBuf, str::FromStr};
use syntect::highlighting::ThemeSet;
use syntect::html::highlighted_html_for_string;
use syntect::parsing::SyntaxSet;
use tokio::fs::read_to_string;
pub const ARTICLE_ROOT: &'static str = "./blog/articles";
pub const ASSET_ROOT: &'static str = "./blog/assets";
#[get("/blog")]
pub fn r_blog() -> Redirect {
Redirect::to(rocket::uri!(r_blog_index()))
}
#[get("/blog/index")]
pub async fn r_blog_index() -> MyResult<DynScaffold<'static>> {
// TODO this is a major performance issue here. requires O(n) syscalls to complete
let articles = get_articles(&PathBuf::from_str(ARTICLE_ROOT).unwrap()).await?;
Ok(Scaffold {
title: "blog index".to_string(),
content: markup::new! {
h2 { "The Weblog" }
p { i { "Articles in reverse-chronological order." } }
p { a[href=uri!(r_blog_atom())]{ "Atom feed" } }
ul {
@for a in &articles {
li {
@a.date.to_string() ": "
a[href=uri!(r_blog_article(&a.canonical_name))] { @a.title }
}
}
}
},
})
}
#[get("/blog/<name>")]
pub async fn r_blog_article(name: &str) -> MyResult<DynScaffold<'static>> {
let apath = PathBuf::from_str(ARTICLE_ROOT)
.unwrap()
.join(PathBuf::new().with_file_name(name).with_extension("md"));
let a = article_metadata(apath.clone()).await?;
let text = read_to_string(apath).await?;
let ast = markdown::to_mdast(
&text,
&markdown::ParseOptions {
constructs: markdown::Constructs {
math_flow: true,
math_text: true,
..Default::default()
},
..Default::default()
},
)
.map_err(|e| anyhow!("the server had trouble parsing markdown: {e}"))?;
Ok(Scaffold {
title: a.title,
content: markup::new! {
@node_to_render(&ast)
p{i{ "Article written by metamuffin, text licenced under CC BY-ND 4.0, non-trivial code blocks under GPL-3.0-only except where indicated otherwise" }}
},
})
}
fn node_to_render<'a>(node: &'a Node) -> DynRender<'a> {
match node {
Node::Text(s) => markup::new!(@s.value),
Node::Paragraph(el) => markup::new!(p { @for e in &el.children { @node_to_render(e) } }),
Node::List(list) => markup::new!(ul { @for e in &list.children { @node_to_render(e) } }),
Node::Root(el) => markup::new!(article { @for e in &el.children { @node_to_render(e) } }),
Node::ListItem(el) => markup::new!(li { @for e in &el.children { @node_to_render(e) } }),
Node::Emphasis(el) => markup::new!(i { @for e in &el.children { @node_to_render(e) } }),
Node::Strong(el) => markup::new!(strong { @for e in &el.children { @node_to_render(e) } }),
Node::Html(html) => markup::new!(@raw(&html.value)),
Node::Link(l) => {
markup::new!(a[href=&l.url, alt=&l.title] { @for e in &l.children { @node_to_render(e) } })
}
Node::Break(_) => markup::new!(br;),
Node::InlineCode(s) => markup::new!(code { @s.value }),
Node::Delete(_) => markup::new!("todo1"),
Node::FootnoteReference(_) => markup::new!("todo3"),
Node::FootnoteDefinition(_) => markup::new!("todo4"),
Node::Image(_) => markup::new!("todo5"),
Node::ImageReference(_) => markup::new!("todo6"),
Node::LinkReference(_) => markup::new!("todo8"),
Node::Blockquote(_) => markup::new!("todo10"),
Node::Table(_) => markup::new!("todo12"),
Node::ThematicBreak(_) => markup::new!("todo13"),
Node::TableRow(_) => markup::new!("todo14"),
Node::TableCell(_) => markup::new!("todo15"),
Node::Definition(_) => markup::new!("todo16"),
Node::Toml(_)
| Node::Yaml(_)
| Node::MdxjsEsm(_)
| Node::MdxJsxFlowElement(_)
| Node::MdxJsxTextElement(_)
| Node::MdxTextExpression(_)
| Node::MdxFlowExpression(_) => markup::new!("unsupported"),
Node::Heading(h) => {
let inner = markup::new!(@for e in &h.children { @node_to_render(e) });
match h.depth {
1 => markup::new!(h2{@inner}),
2 => markup::new!(h3{@inner}),
3 => markup::new!(h4{@inner}),
4 => markup::new!(h5{@inner}),
5 => markup::new!(h6{@inner}),
6 => markup::new!(h6{@inner}),
_ => unreachable!(),
}
}
Node::Code(code) => {
let theme = &ThemeSet::load_defaults().themes["base16-ocean.dark"];
let syntax = &SyntaxSet::load_defaults_newlines();
let lang = syntax
.find_syntax_by_extension(&code.lang.to_owned().unwrap_or("txt".to_owned()))
.unwrap_or_else(|| syntax.find_syntax_by_extension("txt").unwrap());
let html = highlighted_html_for_string(&code.value, syntax, lang, theme).unwrap();
markup::new!(@raw(&html))
}
Node::Math(s) => {
let mathml = latex2mathml::latex_to_mathml(&s.value, DisplayStyle::Block)
.expect("invalid block math");
markup::new!(@raw(&mathml))
}
Node::InlineMath(s) => {
let mathml = latex2mathml::latex_to_mathml(&s.value, DisplayStyle::Inline)
.expect("invalid inline math");
markup::new!(@raw(&mathml))
}
}
}
|
