add pybutton and pytitle

pyscriptjs/src/utils.ts

@@ -9,4 +9,29 @@ const getLastPath = function (str) {
   return str.split('\\').pop().split('/').pop();
 }
 
-export {addClasses, getLastPath}
+function htmlDecode(input) {
+  var doc = new DOMParser().parseFromString(input, "text/html");
+  return ltrim(doc.documentElement.textContent);
+}
+
+function ltrim(code: string): string {
+  const lines = code.split("\n")
+  if (lines.length == 0)
+    return code
+
+  const lengths = lines
+    .filter((line) => line.trim().length != 0)
+    .map((line) => {
+      const [prefix] = line.match(/^\s*/)
+      return prefix.length
+    })
+
+  const k = Math.min(...lengths)
+
+  if (k != 0)
+    return lines.map((line) => line.substring(k)).join("\n")
+  else
+    return code
+}
+
+export {addClasses, getLastPath, ltrim, htmlDecode}