Minetest-WorldEditAdditions/.docs/lib/parse_sections.js
2022-06-11 16:58:25 +01:00

90 lines
2.2 KiB
JavaScript

"use strict";
const crypto = require("crypto");
const htmlentities = require("html-entities");
const markdown = require("markdown-it")({
xhtmlOut: true
});
const chroma = require("chroma-js");
const markdown_prism = require("markdown-it-prism");
markdown.use(markdown_prism, {
init: (Prism) => {
Prism.languages.weacmd = {
"string": /\<[^>]+?\>/,
"function": /^(?:\/\/\S+)\b/m,
"number": /\b0x[\da-f]+\b|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:e[+-]?\d+)?%?/i,
"operator": /[<>:=\[\]|{}]/,
"keyword": /\b(?:[-+]?[zyx])\b/
}
}
});
function extract_title(line) {
return line.match(/#+\s+(.+)\s*/)[1].replace(/^`*|`*$/g, "")
}
function make_section(acc, cat_current, cats) {
let title = extract_title(acc[0]);
return {
category: cat_current,
category_colour: cats.get(cat_current),
category_colour_dark: chroma(cats.get(cat_current))
.set("hsl.s", 0.8)
.set("hsl.l", "*0.6")
.css("hsl"),
title: htmlentities.encode(title),
slug: title.toLowerCase().replace(/[^a-z0-9-_\s]+/gi, "")
.replace(/\s+/g, "-")
.replace(/-.*$/, ""),
content: markdown.render(acc.slice(1).join("\n"))
};
}
module.exports = function parse_sections(source) {
const cats = new Map();
source.match(/^##\s+.*$/gm)
.map(extract_title)
.map((item, i, all) => cats.set(
item,
chroma(`hsl(${i/all.length*(360-360/all.length)}, 60%, 90%)`).css("hsl")
));
const lines = source.split(/\r?\n/gi);
const result = [];
let acc = [];
let cat_current = null;
for(let line of lines) {
if(line.startsWith(`#`)) {
let heading_level = line.match(/^#+/)[0].length
// 1: Deal with the previous section
if(acc.length > 0) {
let heading_level_prev = acc[0].match(/^#+/)[0].length;
if(heading_level_prev === 3 && acc.length > 0 && heading_level <= 3) {
result.push(make_section(acc, cat_current, cats));
}
}
// 2: Deal with the new line
if(heading_level === 2)
cat_current = extract_title(line);
if(heading_level > 3)
acc.push(line)
else
acc = [ line ];
}
else
acc.push(line);
}
if(acc.length > 0)
result.push(make_section(acc, cat_current, cats));
return { sections: result, categories: cats };
}