Extract Zip export to new IExportPlugin interface

Library/Export/ZipExport.cs

@@ -0,0 +1,99 @@
+/*
+Copyright (c) 2017, Lars Brubaker, John Lewin
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The views and conclusions contained in the software and documentation are those
+of the authors and should not be interpreted as representing official policies,
+either expressed or implied, of the FreeBSD Project.
+*/
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.IO.Compression;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using MatterHackers.Agg.UI;
+using MatterHackers.Localizations;
+
+namespace MatterHackers.MatterControl.Library.Export
+{
+	public class ZipExport : IExportPlugin
+	{
+		public string ButtonText => "ZIP File".Localize();
+
+		public string FileExtension => ".zip";
+
+		public string ExtensionFilter => "Save as ZIP|*.zip";
+
+		public bool EnabledForCurrentPart(ILibraryContentStream libraryContent)
+		{
+			return !libraryContent.IsProtected;
+		}
+
+		public async Task<bool> Generate(IEnumerable<ILibraryItem> libraryItems, string outputPath)
+		{
+			var streamItems = libraryItems.OfType<ILibraryContentStream>();
+			if (streamItems.Any())
+			{
+				await Task.Run(async () =>
+				{
+					try
+					{
+						if (File.Exists(outputPath))
+						{
+							File.Delete(outputPath);
+						}
+
+						using (ZipArchive zipArchive = ZipFile.Open(outputPath, ZipArchiveMode.Create))
+						{
+							foreach (var item in streamItems)
+							{
+								// TODO: need to test for and resolve name conflicts
+								var entry = zipArchive.CreateEntry(item.FileName);
+
+								using (var sourceStream = await item.GetContentStream(null))
+								using (var outputStream = entry.Open())
+								{
+									sourceStream.Stream.CopyTo(outputStream);
+								}
+							}
+
+						}
+					}
+					catch (Exception ex)
+					{
+						Console.WriteLine(ex.Message);
+					}
+				});
+
+				return true;
+			}
+
+			return false;
+		}
+
+		public GuiWidget GetOptionsPanel() => null;
+	}
+}