using System;
using System.IO;

namespace TriLib
{
	public static class FileUtils
	{
		public static string GetShortFilename(string filename)
		{
			int num = filename.LastIndexOf("\\");
			if (num >= 0)
			{
				return filename.Substring(num + 1);
			}
			int num2 = filename.LastIndexOf("/");
			if (num2 >= 0)
			{
				return filename.Substring(num2 + 1);
			}
			return filename;
		}

		public static string GetFileDirectory(string filename)
		{
			int num = filename.LastIndexOf("\\");
			if (num >= 0)
			{
				return filename.Substring(0, num);
			}
			int num2 = filename.LastIndexOf("/");
			if (num2 >= 0)
			{
				return filename.Substring(0, num2);
			}
			return null;
		}

		public static string GetFilenameWithoutExtension(string filename)
		{
			int num = filename.LastIndexOf('.');
			if (num < 0)
			{
				return null;
			}
			int num2 = filename.LastIndexOf("\\");
			if (num2 >= 0)
			{
				return filename.Substring(num2, num);
			}
			int num3 = filename.LastIndexOf("/");
			if (num3 >= 0)
			{
				return filename.Substring(num3, num);
			}
			return null;
		}

		public static string GetFileExtension(string filename)
		{
			int num = filename.LastIndexOf('.');
			if (num < 0)
			{
				return null;
			}
			return filename.Substring(num).ToLowerInvariant();
		}

		public static string GetFilename(string path)
		{
			string fileName = Path.GetFileName(path);
			if (!(path == fileName))
			{
				return fileName;
			}
			int num = path.LastIndexOf("\\");
			if (num >= 0)
			{
				return path.Substring(num + 1);
			}
			int num2 = path.LastIndexOf("/");
			if (num2 >= 0)
			{
				return path.Substring(num2 + 1);
			}
			return path;
		}

		public static byte[] LoadFileData(string filename)
		{
			byte[] result;
			try
			{
				if (filename == null)
				{
					result = new byte[0];
				}
				else
				{
					result = File.ReadAllBytes(filename.Replace('\\', '/'));
				}
			}
			catch (Exception)
			{
				result = new byte[0];
			}
			return result;
		}
	}
}