xenadmin/XenCenterLib/Archive/ArchiveWriter.cs

/* Copyright (c) Cloud Software Group, Inc. 
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using System;
using System.IO;

namespace XenCenterLib.Archive
{
    public abstract class ArchiveWriter : IDisposable
    {
        public abstract void Add(Stream filetoAdd, string fileName, DateTime modificationTime, Action cancellingDelegate);

        public virtual void SetBaseStream(Stream outputStream)
        {
            throw new NotImplementedException();
        }

        public abstract void AddDirectory(string directoryName, DateTime modificationTime);

        /// <summary>
        /// Disposal hook
        /// </summary>
        /// <param name="disposing"></param>
        protected virtual void Dispose(bool disposing){ }

        public void CreateArchive(string pathToArchive, Action cancellingDelegate = null, Action<int> progressDelegate = null)
        {
            if (!Directory.Exists(pathToArchive))
                throw new FileNotFoundException("The path " + pathToArchive + " does not exist");

            var files = Directory.GetFiles(pathToArchive, "*.*", SearchOption.AllDirectories);
            for (var i = 0; i < files.Length; i++)
            {
                string filePath = files[i];
                cancellingDelegate?.Invoke();

                using (FileStream fs = File.OpenRead(filePath))
                {
                    Add(fs, CleanRelativePathName(pathToArchive, filePath), File.GetCreationTime(filePath), cancellingDelegate);
                    progressDelegate?.Invoke((int)50.0 * i / files.Length);
                }
            }

            var directories = Directory.GetDirectories(pathToArchive, "*.*", SearchOption.AllDirectories);
            for (var j = 0; j < directories.Length; j++)
            {
                string dirPath = directories[j];
                cancellingDelegate?.Invoke();
                AddDirectory(CleanRelativePathName(pathToArchive, dirPath), Directory.GetCreationTime(dirPath));
                progressDelegate?.Invoke(50 + (int)50.0 * j / directories.Length);
            }
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);   
        }

        private string CleanRelativePathName(string rootPath, string pathName)
        {
            return pathName.Replace(rootPath, "").Replace('\\', '/').TrimStart('/');
        }

    }
}