Add util files

1 files changed, 44 insertions, 0 deletions

diff --git a/src/util/markdown.ts b/src/util/markdown.ts
new file mode 100644
index 0000000..b1577d9
--- /dev/null
+++ b/src/util/markdown.ts
@@ -0,0 +1,44 @@
+// Extra marked renderer (used to render plaintext event description for page metadata)
+// Adapted from https://dustinpfister.github.io/2017/11/19/nodejs-marked/
+
+import { marked } from "marked";
+
+// ? to ? helper
+function htmlEscapeToText(text: string) {
+  return text.replace(/\&\#[0-9]*;|&/g, function (escapeCode) {
+    if (escapeCode.match(/amp/)) {
+      return "&";
+    }
+    const code = escapeCode.match(/[0-9]+/);
+    return String.fromCharCode(Number(code));
+  });
+}
+
+export const renderPlain = () => {
+  var render = new marked.Renderer();
+  // render just the text of a link, strong, em
+  render.link = function (href, title, text) {
+    return text;
+  };
+  render.strong = function (text) {
+    return text;
+  };
+  render.em = function (text) {
+    return text;
+  };
+  // render just the text of a paragraph
+  render.paragraph = function (text) {
+    return htmlEscapeToText(text) + "\r\n";
+  };
+  // render nothing for headings, images, and br
+  render.heading = function (text, level) {
+    return "";
+  };
+  render.image = function (href, title, text) {
+    return "";
+  };
+  render.br = function () {
+    return "";
+  };
+  return render;
+};