/// <summary> /// Removes one of many files in storage. It creates a new Zip file. /// </summary> /// <param name="_zip">Reference to the current Zip object</param> /// <param name="_zfes">List of Entries to remove from storage</param> /// <returns>True if success, false if not</returns> /// <remarks>This method only works for storage of type FileStream</remarks> public static bool RemoveEntries(ref ZipStorer _zip, List <ZipFileEntry> _zfes) { if (!(_zip.ZipFileStream is FileStream)) { throw new InvalidOperationException("RemoveEntries is allowed just over streams of type FileStream"); } //Get full list of entries List <ZipFileEntry> fullList = _zip.ReadCentralDir(); //In order to delete we need to create a copy of the zip file excluding the selected items string tempZipName = Path.GetTempFileName(); string tempEntryFile = Path.GetTempFileName(); try { ZipStorer tempTargetZip = ZipStorer.Create(tempZipName, _zip.Comment); foreach (ZipFileEntry zfe in fullList) { if (!_zfes.Contains(zfe)) { if (_zip.ExtractFile(zfe, tempEntryFile)) { tempTargetZip.AddFile(zfe.Method, tempEntryFile, zfe.FilenameInZip, zfe.Comment); } } } _zip.Close(); tempTargetZip.Close(); File.Delete(_zip.FileName); File.Move(tempZipName, _zip.FileName); _zip = ZipStorer.Open(_zip.FileName, _zip.Access); } catch { return(false); } finally { if (File.Exists(tempZipName)) { File.Delete(tempZipName); } if (File.Exists(tempEntryFile)) { File.Delete(tempEntryFile); } } return(true); }
public static void ExtractZipToDir(string zipFilePath, string extraDir) { using (ZipStorer zip = Open(zipFilePath, FileAccess.Read)) { if (!Directory.Exists(extraDir)) { Directory.CreateDirectory(extraDir); } zip.ReadCentralDirAction(delegate(ZipFileEntry f) { zip.ExtractFile(f, Path.Combine(extraDir, f.FilenameInZip)); }); } }
/// <summary> /// 释放包内文件到当前目录下并保留覆盖文件的文件备份 /// </summary> /// <param name="zipFilePath">要释放的zip包文件</param> /// <param name="extraDir">释放目录</param> /// <param name="overrideFpkgPath">覆盖文件备份包名称,为空或不传值则自动命名</param> public static void ExtractZipToDirWithOverrideBak(string zipFilePath, string extraDir, string overrideFpkgPath) { if (string.IsNullOrEmpty(overrideFpkgPath)) { int idx = zipFilePath.IndexOf('.'); overrideFpkgPath = zipFilePath.Substring(0, idx) + "_overridebak.zip"; } MemoryStream ms = new MemoryStream(); StreamWriter sw = new StreamWriter(ms); int successCount = 0, failedBakCount = 0, overrideCount = 0; using (ZipStorer zipBak = ZipStorer.Create(overrideFpkgPath, "")) { using (ZipStorer zip = Open(zipFilePath, FileAccess.Read)) { if (!Directory.Exists(extraDir)) { Directory.CreateDirectory(extraDir); } zip.ReadCentralDirAction(delegate(ZipFileEntry f) { string targetFilePath = Path.Combine(extraDir, f.FilenameInZip); bool backupSuccess = true; if (File.Exists(targetFilePath)) { sw.Write(string.Format("#备份文件{0}", f.FilenameInZip)); try { zipBak.AddFile(Compression.Deflate, targetFilePath, f.FilenameInZip, ""); sw.WriteLine(" OK!"); successCount++; } catch (Exception bakEx) { backupSuccess = false; sw.WriteLine(); sw.WriteLine(string.Format("\n#{0} 备份失败 \n#{1}", f.FilenameInZip, bakEx.Message.Replace("\n", "\n#"))); failedBakCount++; } } if (!backupSuccess) { sw.WriteLine(string.Format("## {0} 因备份失败未更新", f.FilenameInZip)); } else { try { zip.ExtractFile(f, targetFilePath); overrideCount++; } catch (Exception ioEx) { sw.WriteLine(string.Format("\n##*{0} 覆盖失败 \n#{1}", f.FilenameInZip, ioEx.Message.Replace("\n", "\n#"))); } } }); } } sw.WriteLine(string.Format("# -> 共备份成功{0}个文件,{1}个失败,覆盖{2}个文件,{3}个文件未被更新!", successCount, failedBakCount, overrideCount, successCount - overrideCount)); sw.Flush(); sw.Close(); File.WriteAllBytes(overrideFpkgPath.Replace(".zip", ".log"), ms.ToArray()); ms.Close(); ms.Dispose(); }