GEEKING

Client.LegacyAssemblies/Roblox.Common/Roblox.Common.Mime/QuotedPrintableEncoding.cs

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+using System;
+using System.IO;
+using System.Text.RegularExpressions;
+
+namespace Roblox.Common.Mime;
+
+public class QuotedPrintableEncoding
+{
+	private static string HexDecoderEvaluator(Match m)
+	{
+		return ((char)Convert.ToInt32(m.Groups[2].Value, 16)).ToString();
+	}
+
+	private static string HexDecoder(string line)
+	{
+		if (line == null)
+		{
+			throw new ArgumentNullException();
+		}
+		return new Regex("(\\=([0-9A-F][0-9A-F]))", RegexOptions.IgnoreCase).Replace(line, HexDecoderEvaluator);
+	}
+
+	public static string DecodeFile(string filepath)
+	{
+		if (filepath == null)
+		{
+			throw new ArgumentNullException();
+		}
+		FileInfo fileInfo = new FileInfo(filepath);
+		if (!fileInfo.Exists)
+		{
+			throw new FileNotFoundException();
+		}
+		StreamReader streamReader = fileInfo.OpenText();
+		try
+		{
+			string result = string.Empty;
+			string encoded;
+			while ((encoded = streamReader.ReadLine()) != null)
+			{
+				result += Decode(encoded);
+			}
+			return result;
+		}
+		finally
+		{
+			streamReader.Close();
+		}
+	}
+
+	public static string Decode(string encoded)
+	{
+		if (encoded == null)
+		{
+			throw new ArgumentNullException();
+		}
+		using StringWriter stringWriter = new StringWriter();
+		using (StringReader stringReader = new StringReader(encoded))
+		{
+			string line;
+			while ((line = stringReader.ReadLine()) != null)
+			{
+				if (line.EndsWith("="))
+				{
+					stringWriter.Write(HexDecoder(line.Substring(0, line.Length - 1)));
+				}
+				else
+				{
+					stringWriter.WriteLine(HexDecoder(line));
+				}
+				stringWriter.Flush();
+			}
+		}
+		return stringWriter.ToString();
+	}
+}