Crisis.Ionic.Zip.ZipEntry.Create C# (CSharp) Method

        private static ZipEntry Create(string nameInArchive, ZipEntrySource source, Object arg1, Object arg2)
        {
            if (String.IsNullOrEmpty(nameInArchive))
                throw new Crisis.Ionic.Zip.ZipException("The entry name must be non-null and non-empty.");

            ZipEntry entry = new ZipEntry();

            // workitem 7071
            // workitem 7926 - "version made by" OS should be zero for compat with WinZip
            entry._VersionMadeBy = (0 << 8) + 45; // indicates the attributes are FAT Attributes, and v4.5 of the spec
            entry._Source = source;
            entry._Mtime = entry._Atime = entry._Ctime = DateTime.UtcNow;

            if (source == ZipEntrySource.Stream)
            {
                entry._sourceStream = (arg1 as Stream);         // may  or may not be null
            }
            else if (source == ZipEntrySource.WriteDelegate)
            {
                entry._WriteDelegate = (arg1 as WriteDelegate); // may  or may not be null
            }
            else if (source == ZipEntrySource.JitStream)
            {
                entry._OpenDelegate = (arg1 as OpenDelegate);   // may  or may not be null
                entry._CloseDelegate = (arg2 as CloseDelegate); // may  or may not be null
            }
            else if (source == ZipEntrySource.ZipOutputStream)
            {
            }
            // workitem 9073
            else if (source == ZipEntrySource.None)
            {
                // make this a valid value, for later.
                entry._Source = ZipEntrySource.FileSystem;
            }
            else
            {
                String filename = (arg1 as String);   // must not be null

                if (String.IsNullOrEmpty(filename))
                    throw new Crisis.Ionic.Zip.ZipException("The filename must be non-null and non-empty.");

                try
                {
                    // The named file may or may not exist at this time.  For
                    // example, when adding a directory by name.  We test existence
                    // when necessary: when saving the ZipFile, or when getting the
                    // attributes, and so on.

#if NETCF
                    // workitem 6878
                    // Ionic.Zip.SharedUtilities.AdjustTime_Win32ToDotNet
                    entry._Mtime = File.GetLastWriteTime(filename).ToUniversalTime();
                    entry._Ctime = File.GetCreationTime(filename).ToUniversalTime();
                    entry._Atime = File.GetLastAccessTime(filename).ToUniversalTime();

                    // workitem 7071
                    // can only get attributes of files that exist.
                    if (File.Exists(filename) || Directory.Exists(filename))
                        entry._ExternalFileAttrs = (int)NetCfFile.GetAttributes(filename);

#elif SILVERLIGHT
                    entry._Mtime =
                        entry._Ctime =
                        entry._Atime = System.DateTime.UtcNow;
                    entry._ExternalFileAttrs = (int)0;
#else
                    // workitem 6878??
                    entry._Mtime = File.GetLastWriteTime(filename).ToUniversalTime();
                    entry._Ctime = File.GetCreationTime(filename).ToUniversalTime();
                    entry._Atime = File.GetLastAccessTime(filename).ToUniversalTime();

                    // workitem 7071
                    // can only get attributes on files that exist.
                    if (File.Exists(filename) || Directory.Exists(filename))
                        entry._ExternalFileAttrs = (int)File.GetAttributes(filename);

#endif
                    entry._ntfsTimesAreSet = true;

                    entry._LocalFileName = Path.GetFullPath(filename); // workitem 8813

                }
                catch (System.IO.PathTooLongException ptle)
                {
                    // workitem 14035
                    var msg = String.Format("The path is too long, filename={0}",
                                            filename);
                    throw new ZipException(msg, ptle);
                }

            }

            entry._LastModified = entry._Mtime;
            entry._FileNameInArchive = SharedUtilities.NormalizePathForUseInZipFile(nameInArchive);
            // We don't actually slurp in the file data until the caller invokes Write on this entry.

            return entry;
        }