using System.Collections;
using System.Collections.Generic;
using System.Text;
using UnityEngine;

public static class RegexExtension
{
    public static string ToOrPattern(this List<string> patterns)
    {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.Append("(");
        for (int i = 0; i < patterns.Count; i++)
        {
            stringBuilder.Append(patterns[i]);
            if (i < patterns.Count - 1)
            {
                stringBuilder.Append("|");
            }
        }
        stringBuilder.Append(")");
        return stringBuilder.ToString();
    }

    public static string GetTransferedPattern(this string pattern)
    {
        pattern = pattern.Replace("(", "\\(");
        pattern = pattern.Replace(")", "\\)");
        pattern = pattern.Replace("^", "\\^");
        pattern = pattern.Replace("+", "\\+");
        pattern = pattern.Replace("*", "\\*");
        pattern = pattern.Replace(".", "\\.");
        pattern = pattern.Replace("[", "\\[");
        pattern = pattern.Replace("]", "\\]");
        pattern = pattern.Replace("{", "\\{");
        pattern = pattern.Replace("}", "\\}");
        return pattern;
    }
}