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|
use std::{
fs::{read_to_string, File},
io::{BufRead, BufReader, Write},
path::PathBuf,
};
use clap::{Parser, Subcommand};
use laby::{html, internal::Buffer, iter, li, raw, ul, Render};
use markdown::{Block, Span};
#[derive(Parser)]
struct Args {
#[clap(short, long)]
output: Option<String>,
#[clap(subcommand)]
action: ArgAction,
}
#[derive(Subcommand)]
enum ArgAction {
RenderArticle { input: String },
RenderIndex { root: String },
}
fn main() {
let args = Args::parse();
match args.action {
ArgAction::RenderArticle { input } => {
let md_source = read_to_string(input).unwrap();
let mut out = Buffer::new();
article(md_source).render(&mut out);
write_output(&args.output, out.into_string());
}
ArgAction::RenderIndex { root } => {
let mut out = Buffer::new();
index(root).render(&mut out);
write_output(&args.output, out.into_string());
}
}
}
fn write_output(t: &Option<String>, o: String) {
if let Some(f) = t {
let mut f = File::create(f).unwrap();
f.write_fmt(format_args!("{o}")).unwrap()
} else {
println!("{o}")
}
}
fn scaffold(title: String, body: impl Render) -> impl Render {
html!(
head!(title!(title)),
body!(
nav!(h2!("metamuffin's blog"), a!(href = "./index.html", "index")),
article!(body)
)
)
}
fn index(root: String) -> impl Render {
scaffold(
"index".to_string(),
ul!(iter!(std::fs::read_dir(root)
.unwrap()
.map(|e| e.unwrap())
.map(|e| (
e.file_name().to_str().unwrap().to_string(),
article_title(e.path())
))
.map(|(path, title)| li!(
path.as_str()[0..10].to_string(),
": ",
a!(href = format!("./{}", path.replace(".md", ".html")), title)
)))),
)
}
fn article_title(path: PathBuf) -> String {
let f = File::open(path).unwrap();
let mut f = BufReader::new(f);
let mut buf = String::new();
f.read_line(&mut buf).unwrap(); // assume the 1st line has the title
String::from(&buf[2..])
}
fn article(md_source: String) -> impl Render {
scaffold(
"blub".to_string(),
raw!(blocks_to_html(markdown::tokenize(&md_source))),
)
}
fn span_to_html(ss: Vec<Span>) -> String {
let mut out = String::new();
for s in ss {
out += match s {
Span::Break => format!("<br/>"),
Span::Text(t) => escape(&t),
Span::Code(c) => format!("<pre><code>{}</code></pre>", escape(&c)),
Span::Link(text, url, _) => {
format!("<a href=\"{}\">{}</a>", escape(&url), escape(&text))
}
Span::Image(_, _, _) => todo!(),
Span::Emphasis(c) => format!("<i>{}</i>", span_to_html(c)),
Span::Strong(c) => format!("<b>{}</b>", span_to_html(c)),
}
.as_str()
}
out
}
fn blocks_to_html(blocks: Vec<Block>) -> String {
let mut out = String::new();
for e in blocks {
out += match e {
markdown::Block::Header(text, level) => {
format!("<h{level}>{}</h{level}>", span_to_html(text))
}
markdown::Block::Paragraph(p) => format!("<p>{}</p>", span_to_html(p)),
markdown::Block::Blockquote(q) => format!("<quote>{}</quote>", blocks_to_html(q)),
markdown::Block::CodeBlock(_syntax, content) => {
format!("<pre><code>{}</code></pre>", escape(&content)) // TODO syntax highlighting
}
markdown::Block::OrderedList(_, _) => todo!(),
markdown::Block::UnorderedList(_) => todo!(),
markdown::Block::Raw(r) => r,
markdown::Block::Hr => format!("<hr/>"),
}
.as_str();
}
out
}
fn escape(text: &str) -> String {
text.replace("&", "&")
.replace("<", "<")
.replace(">", ">")
.replace("'", "’")
.replace("\"", """)
}
|
