Mike Phares
b1c6903c1c
Align .editorconfig files Move Controller logic to DMO classes GlobalVars.AppSettings = Models.AppSettings.GetFromConfigurationManager(); Question EditorConfig Project level editorconfig Format White Spaces AppSetting when EnvironmentVariable not set Corrective Actions Tests Schedule Actions Tests DMO Tests Controller Tests Get ready to use VSCode IDE
79 lines
3.3 KiB
C#
79 lines
3.3 KiB
C#
using System.IO;
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using ICSharpCode.SharpZipLib.Core;
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using ICSharpCode.SharpZipLib.Zip;
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namespace Fab2ApprovalSystem.Misc;
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public class Zipper {
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/// <summary>
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/// Compresses the files in the nominated folder, and creates a zip file on disk named as outPathname.
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/// </summary>
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public void CreateZip(string outPathname, string folderName) {
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// TODO Try and Catch block
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Directory.CreateDirectory(Path.GetDirectoryName(outPathname));
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FileStream fsOut = File.Create(outPathname);
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ZipOutputStream zipStream = new(fsOut);
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zipStream.SetLevel(3); //0-9, 9 being the highest level of compression
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//zipStream.Password = password; // optional. Null is the same as not setting. Required if using AES.
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// This setting will strip the leading part of the folder path in the entries, to
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// make the entries relative to the starting folder.
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// To include the full path for each entry up to the drive root, assign folderOffset = 0.
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int folderOffset = folderName.Length + (folderName.EndsWith("\\") ? 0 : 1);
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CompressFolder(folderName, zipStream, folderOffset);
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zipStream.IsStreamOwner = true; // Makes the Close also Close the underlying stream
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zipStream.Close();
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}
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/// <summary>
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/// Recurses down the folder structure
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/// </summary>
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private void CompressFolder(string path, ZipOutputStream zipStream, int folderOffset) {
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// TODO Try and Catch block
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string[] files = Directory.GetFiles(path);
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foreach (string filename in files) {
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FileInfo fi = new(filename);
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string entryName = filename.Substring(folderOffset); // Makes the name in zip based on the folder
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entryName = ZipEntry.CleanName(entryName); // Removes drive from name and fixes slash direction
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ZipEntry newEntry = new(entryName);
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newEntry.DateTime = fi.LastWriteTime; // Note the zip format stores 2 second granularity
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// Specifying the AESKeySize triggers AES encryption. Allowable values are 0 (off), 128 or 256.
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// A password on the ZipOutputStream is required if using AES.
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// newEntry.AESKeySize = 256;
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// To permit the zip to be unpacked by built-in extractor in WinXP and Server2003, WinZip 8, Java, and other older code,
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// you need to do one of the following: Specify UseZip64.Off, or set the Size.
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// If the file may be bigger than 4GB, or you do not need WinXP built-in compatibility, you do not need either,
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// but the zip will be in Zip64 format which not all utilities can understand.
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// zipStream.UseZip64 = UseZip64.Off;
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newEntry.Size = fi.Length;
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zipStream.PutNextEntry(newEntry);
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// Zip the file in buffered chunks
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// the "using" will close the stream even if an exception occurs
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byte[] buffer = new byte[4096];
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using (FileStream streamReader = File.OpenRead(filename)) {
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StreamUtils.Copy(streamReader, zipStream, buffer);
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}
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zipStream.CloseEntry();
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}
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string[] folders = Directory.GetDirectories(path);
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foreach (string folder in folders) {
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CompressFolder(folder, zipStream, folderOffset);
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}
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}
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} |