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#!/usr/bin/env node
const fs = require('fs');
const cheerio = require('cheerio');
const entities = require('html-entities');
const hljs = require('./build/highlight.js');
const githublink = `\
<li class="part-title">\
<a href="https://github.com/dtolnay/cxx">\
<i class="fa fa-github"></i>\
https://github.com/dtolnay/cxx\
</a>\
</li>`;
const opengraph = `\
<meta property="og:image" content="https://cxx.rs/cxx.png" />\
<meta property="og:site_name" content="CXX" />\
<meta property="og:title" content="CXX — safe interop between Rust and C++" />\
<meta name="twitter:image:src" content="https://cxx.rs/cxx.png" />\
<meta name="twitter:site" content="@davidtolnay" />\
<meta name="twitter:card" content="summary" />\
<meta name="twitter:title" content="CXX — safe interop between Rust and C++" />`;
const htmljs = `\
var html = document.querySelector('html');
html.classList.remove('no-js');
html.classList.add('js');`;
const dirs = ['build'];
while (dirs.length) {
const dir = dirs.pop();
fs.readdirSync(dir).forEach((entry) => {
path = dir + '/' + entry;
const stat = fs.statSync(path);
if (stat.isDirectory()) {
dirs.push(path);
return;
}
if (!path.endsWith('.html')) {
return;
}
const index = fs.readFileSync(path, 'utf8');
const $ = cheerio.load(index, { decodeEntities: false });
$('head').append(opengraph);
$('script:nth-of-type(3)').text(htmljs);
$('nav#sidebar ol.chapter').append(githublink);
$('head link[href="tomorrow-night.css"]').attr('disabled', true);
$('head link[href="ayu-highlight.css"]').attr('disabled', true);
$('button#theme-toggle').attr('style', 'display:none');
$('pre code').each(function () {
const node = $(this);
const langClass = node.attr('class').split(' ', 2)[0];
if (!langClass.startsWith('language-')) {
return;
}
const lang = langClass.replace('language-', '');
const lines = node.html().split('\n');
const boring = lines.map((line) =>
line.includes('<span class="boring">')
);
const ellipsis = lines.map((line) => line.includes('// ...'));
const target = entities.decode(node.text());
const highlighted = hljs.highlight(lang, target).value;
const result = highlighted
.split('\n')
.map(function (line, i) {
if (boring[i]) {
line = '<span class="boring">' + line;
} else if (ellipsis[i]) {
line = '<span class="ellipsis">' + line;
}
if (i > 0 && (boring[i - 1] || ellipsis[i - 1])) {
line = '</span>' + line;
}
return line;
})
.join('\n');
node.text(result);
node.removeClass(langClass);
if (!node.hasClass('focuscomment')) {
node.addClass('hidelines');
node.addClass('hide-boring');
}
});
$('code').each(function () {
$(this).addClass('hljs');
});
const out = $.html();
fs.writeFileSync(path, out);
});
}
fs.copyFileSync('build/highlight.css', 'build/tomorrow-night.css');
fs.copyFileSync('build/highlight.css', 'build/ayu-highlight.css');
var bookjs = fs.readFileSync('build/book.js', 'utf8');
bookjs = bookjs
.replace('set_theme(theme, false);', '')
.replace('document.querySelectorAll("code.hljs")', 'document.querySelectorAll("code.hidelines")');
fs.writeFileSync('build/book.js', bookjs);
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