1 files changed, 95 insertions, 0 deletions
diff --git a/.eleventy.js b/.eleventy.js
new file mode 100644
index 0000000..2ffec7d
--- /dev/null
+++ b/.eleventy.js
@@ -0,0 +1,95 @@
+const fs = require("fs");
+const hljs = require("highlight.js");
+const twemoji = require("twemoji");
+const { DateTime } = require("luxon");
+const utils = require("markdown-it/lib/common/utils");
+
+const excerptMinimumLength = 280;
+const excerptSeparator = "<!--more-->"
+
+function extractExcerpt(doc) {
+  if (doc.data.readOnline) return "[[ No Excerpt Available ]]";
+  if (doc.data.excerpt) return doc.data.excerpt;
+
+  if (!doc.hasOwnProperty("templateContent")) {
+    console.warn("Failed to extract excerpt: Document has no property `templateContent`.");
+    return "";
+  }
+
+  const content = doc.templateContent;
+  if (content.includes(excerptSeparator))
+    return content.substring(0, content.indexOf(excerptSeparator)).trim();
+  else if (content.length <= excerptMinimumLength) return content.trim();
+
+  const excerptEnd = findExcerptEnd(content);
+  return content.substring(0, excerptEnd).trim();
+}
+
+function findExcerptEnd(content, skipLength = 0) {
+  if (content === "") return 0;
+  const paragraphEnd = content.indexOf("</p>", skipLength) + 4;
+  return paragraphEnd + ((paragraphEnd < excerptMinimumLength)?
+    findExcerptEnd(content.substring(paragraphEnd), paragraphEnd):0);
+}
+
+function demark(content) {
+  return content.replace(/<mark>(.*?)<\/mark>/gis, (m,a) => "&#x2588;".repeat(a.length))
+}
+
+module.exports = (cfg) => {
+  cfg.addPlugin(require("@11ty/eleventy-plugin-rss"));
+  cfg.addFilter("excerpt", post => extractExcerpt(post));
+  cfg.addFilter("demark", content => demark(content));
+  cfg.addFilter("date", (date, fmt) =>
+    DateTime.fromJSDate(date).toFormat(fmt));
+  cfg.addPassthroughCopy({"static": "./"});
+  cfg.setDataDeepMerge(true);
+
+  cfg.addFilter("fixAnchors", (c,u) =>
+    c.replace(/<a class="header-anchor" href="/g, "$&"+u));
+
+  const md = require("markdown-it")({
+    typographer: true, html: true,
+    highlight: (str, lang) => {
+      if (lang && hljs.getLanguage(lang)) { try {
+        return '<pre class="hljs"><code>' +
+          hljs.highlight(str, { language: lang, ignoreIllegals: true }).value +
+        '</code></pre>';
+      } catch (__) {} }
+      return '<pre class="hljs"><code>' + md.utils.escapeHtml(str) + '</code></pre>';
+    }
+
+  }).use(require("markdown-it-anchor"), {
+      permalink: true, permalinkBefore: true, permalinkSymbol: "#"})
+    .use(require("markdown-it-emoji"), {shortcuts: {}})
+    .use(require("markdown-it-mark"));
+
+  md.renderer.rules.emoji = (token, i) =>
+    `<span class="emoji-container emoji_${token[i].markup}" ` +
+      `title="${token[i].markup}">${twemoji.parse(token[i].content)}</span>`;
+  md.renderer.rules.code_block = (tokens, i, options, env, slf) =>
+    `<pre${slf.renderAttrs(tokens[i])}><code>` +
+      utils.escapeHtml(tokens[i].content.replace(/ /g, "\xA0"))+'</code></pre>\n';
+
+  cfg.setLibrary("md", md);
+
+  cfg.setBrowserSyncConfig({callbacks: {
+    ready: (e,b) => b.addMiddleware("*", (req, res) => {
+      res.writeHead(404, { "Content-Type": "text/html; charset=UTF-8" });
+      res.write(fs.readFileSync("build/404.html"));
+      res.end();
+    })
+  }});
+
+  return {
+    templateFormats: ["md", "njk"],
+    markdownTemplateEngine: "njk",
+    dir: {
+      input: "posts",
+      output: "build",
+      data: "../globals",
+      layouts: "../layouts",
+      includes: "../includes",
+    },
+  };
+};