text -> convert utils

lib/utils/convert_utils.dart

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+import '../consts.dart';
+
+String humanizeDuration(Duration? duration) {
+  if (duration == null) {
+    return "";
+  }
+  if (duration.inMinutes >= 1) {
+    var min = duration.inMinutes;
+    var secs = duration.inSeconds.remainder(60);
+    return "$min.$secs m";
+  }
+  if (duration.inSeconds >= 1) {
+    var secs = duration.inSeconds;
+    var mili = duration.inMilliseconds.remainder(1000) ~/ 10;
+    return "$secs.$mili s";
+  } else {
+    var mili = duration.inMilliseconds.remainder(1000);
+    return "$mili ms";
+  }
+}
+
+String capitalizeFirstLetter(String? text) {
+  if (text == null || text == "") {
+    return "";
+  } else if (text.length == 1) {
+    return text.toUpperCase();
+  } else {
+    var first = text[0];
+    var rest = text.substring(1);
+    return first.toUpperCase() + rest;
+  }
+}
+
+String formatHeaderCase(String text) {
+  var sp = text.split("-");
+  sp = sp.map((e) => capitalizeFirstLetter(e)).toList();
+  return sp.join("-");
+}
+
+String padMultilineString(String text, int padding,
+    {bool firstLinePadded = false}) {
+  var lines = kSplitter.convert(text);
+  int start = firstLinePadded ? 0 : 1;
+  for (start; start < lines.length; start++) {
+    lines[start] = ' ' * padding + lines[start];
+  }
+  return lines.join("\n");
+}