Lady’s Gitweb - Blog/blob - build.js

   1 #!/usr/bin/env -S deno run --allow-read --allow-write
   2
   3 // Copyright © 2023 Lady [@ Lady’s Computer].
   4 //
   5 // This Source Code Form is subject to the terms of the Mozilla Public
   6 // License, v. 2.0. If a copy of the MPL was not distributed with this
   7 // file, You can obtain one at <https://mozilla.org/MPL/2.0/>.
   8
   9 import hljs from "npm:highlight.js@11.8.0";
  10
  11 const contentLinks = new WeakMap();
  12
  13 const processContent = function (content) {
  14   if (content == null || Object(content) instanceof String) {
  15     // The provided content is nullish or a string.
  16     /* do nothing */
  17   } else if (Array.isArray(content)) {
  18     // The provided content is an array.
  19     content.forEach(processContent.bind(this));
  20   } else {
  21     // The provided content is a NodeList.
  22     for (const child of Array.from(content)) {
  23       applyTransforms.call(this, child);
  24     }
  25   }
  26 };
  27
  28 const applyTransforms = function (node) {
  29   if (
  30     node.localName == "pre" && node.childNodes.length == 1 &&
  31     node.firstChild.localName == "code"
  32   ) {
  33     // This is a code block and should be highlighted.
  34     const code = node.firstChild;
  35     const language = /language-(.*)/u.exec(code.getAttribute("class"))
  36       ?.[1];
  37     if (language) {
  38       try {
  39         const { value: highlight } = hljs.highlight(
  40           node.firstChild.textContent,
  41           { language },
  42         );
  43         const nodes = new DOMParser().parseFromString(
  44           `<!DOCTYPE html><html><body>${highlight}</body></html>`,
  45           "text/html",
  46         ).documentElement.lastChild.childNodes;
  47         code.setAttribute(
  48           "class",
  49           `hljs ${code.getAttribute("class")}`,
  50         );
  51         code.textContent = "";
  52         for (const node of Array.from(nodes)) {
  53           code.appendChild(code.ownerDocument.importNode(node, true));
  54         }
  55         return; // don’t continue processing this node
  56       } catch (e) {
  57         console.warn(e);
  58       }
  59     }
  60   } else if (node.localName == "a") {
  61     const href = node.getAttribute("href");
  62     const title = node.getAttribute("title");
  63     if (title && href) {
  64       contentLinks.get(this)[title] = href;
  65     }
  66   }
  67   if (node.nodeType == 1) {
  68     // This is an element; process its children.
  69     Array.from(node.childNodes).forEach(applyTransforms.bind(this));
  70   } else if (node.nodeType == 3) {
  71     // This is a text node; apply replacements.
  72     node.textContent = node.textContent.replaceAll(":—", ":\u2060—");
  73   }
  74 };
  75
  76 globalThis.bjørnTransformMetadata = (metadata, _type) => {
  77   contentLinks.set(metadata, {});
  78   processContent.call(metadata, metadata.content);
  79   processContent.call(metadata, metadata.summary);
  80 };
  81
  82 globalThis.bjørnTransformFeedHTML = (document, _metadata) => {
  83   const LMN = Lemon.bind({ document });
  84   const h1 = document.getElementsByTagNameNS(
  85     "http://www.w3.org/1999/xhtml",
  86     "h1",
  87   )[0];
  88   const link = LMN.a.href("/")``;
  89   for (const child of Array.from(h1.childNodes)) {
  90     link.appendChild(child);
  91   }
  92   h1.appendChild(link);
  93 };
  94
  95 globalThis.bjørnTransformEntryHTML = (document, metadata) => {
  96   const LMN = Lemon.bind({ document });
  97   const links = Object.entries(contentLinks.get(metadata));
  98   if (links.length) {
  99     document.getElementById("entry.content").appendChild(
 100       LMN.footer`${LMN.nav`${[
 101         LMN.h2`This post contains links.`,
 102         LMN.ul`${
 103           links.map(([name, href]) =>
 104             LMN.li`${LMN.a.href(href)`${name}`}`
 105           )
 106         }`,
 107       ]}`}`,
 108     );
 109   }
 110 };
 111
 112 await import(
 113   "https://git.ladys.computer/Beorn/blob_plain/0.2.3:/build.js"
 114 );