using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Core;

namespace BuzzGUI.Common
{
	public static class ZipFileEx
	{
		public static string UnzipString(string zipfile, string filename)
		{
			var zf = new ZipFile(zipfile);
			var ze = new ZipEntry(filename);
			using (var sr = new StreamReader(zf.GetInputStream(ze)))
			{
				return sr.ReadToEnd();
			}

		}

		public static void UnzipToPath(string zipfile, string path)
		{
			var zf = new ZipFile(zipfile);
			byte[] buffer = new byte[4096];     // 4K is optimum

			foreach (ZipEntry ze in zf)
			{
				if (!ze.IsFile)
					continue;           

				var entryFileName = ze.Name;
				var zipStream = zf.GetInputStream(ze);

				String fullZipToPath = Path.Combine(path, entryFileName);
				string directoryName = Path.GetDirectoryName(fullZipToPath);
				if (directoryName.Length > 0)
					Directory.CreateDirectory(directoryName);

				using (FileStream streamWriter = File.Create(fullZipToPath))
					StreamUtils.Copy(zipStream, streamWriter, buffer);
			}
		}
			 

	}
}