using System; using System.Linq; using System.Text.RegularExpressions; namespace TweetDuck.Core.Utils{ static class StringUtils{ public static readonly string[] EmptyArray = new string[0]; public static string ExtractBefore(string str, char search, int startIndex = 0){ int index = str.IndexOf(search, startIndex); return index == -1 ? str : str.Substring(0, index); } public static int[] ParseInts(string str, char separator){ return str.Split(new char[]{ separator }, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray(); } public static string ConvertPascalCaseToScreamingSnakeCase(string str){ return Regex.Replace(str, @"(\p{Ll})(\P{Ll})|(\P{Ll})(\P{Ll}\p{Ll})", "$1$3_$2$4").ToUpper(); } public static int CountOccurrences(string source, string substring){ int count = 0, index = 0; while((index = source.IndexOf(substring, index)) != -1){ index += substring.Length; ++count; } return count; } } }