Add number parser (#39)

InnerTube/Utils.cs

@@ -11,6 +11,7 @@ namespace InnerTube;
 public static class Utils
 {
  public static IFormatter Formatter = new HtmlFormatter();
+ private static readonly Regex NotDigitsRegex = new(@"\D");
 
  public static T? GetFromJsonPath<T>(this JToken json, string jsonPath)
  {
@@ -164,6 +165,23 @@ public static TimeSpan ParseDuration(string duration)
  timeSpan = TimeSpan.Zero;
  return timeSpan;
  }
+
+ /// <summary>
+ /// Parses a string to a <see cref="ulong"/> by removing all non-digit characters first.<br /><br />
+ /// Negative numbers are not supported. If string contains no digits, returns 0.
+ /// </summary>
+ /// <param name="input">The string to parse, e.g. "10,341 views".</param>
+ /// <returns>The number, e.g. 10341.</returns>
+ /// <exception cref="OverflowException">
+ /// The number is less than <see cref="ulong.MinValue"/> or greater than <see cref="ulong.MaxValue"/>.
+ /// </exception> 
+ public static ulong ParseNumber(string input)
+ {
+ input = NotDigitsRegex.Replace(input, "");
+ return string.IsNullOrWhiteSpace(input)
+ ? 0 
+ : ulong.Parse(input);
+ }
 
  public static string GetParams(this ChannelTabs tab) =>
  tab switch
@@ -323,4 +341,4 @@ public static string PackCommentsContinuation(string videoId, CommentsContext.Ty
 
  return ToBase64UrlString(continuation.ToByteArray());
  }
-}
+}