/// <summary>
/// This method is used to compress the .bak file using SharpZipLib library
/// </summary>
/// <param name="bkFileName">.bak file to be compressed to .zip</param>
/// <returns></returns>
public bool CompressDbBackup()
{
try
{
string zipFilePath = FilePath.Replace(".bak", ".zip");
using (ZipOutputStream zipStream = new ZipOutputStream(File.Create(zipFilePath)))
{
//Compression level 0-9 (9 is highest)
zipStream.SetLevel(4);
//Add an entry to our zip file
ZipEntry entry = new ZipEntry(Path.GetFileName(FilePath));
entry.DateTime = DateTime.Now;
zipStream.Password = String.Format(Password);
zipStream.PutNextEntry(entry);
//to check
double _sofarReadSize = 0;
byte[] buffer = new byte[4096];
int byteCount = 0;
double totalByte;
using (FileStream inputStream = File.OpenRead(FilePath))
{
byteCount = inputStream.Read(buffer, 0, buffer.Length);
totalByte = inputStream.Length;
_sofarReadSize += byteCount;
while (byteCount > 0)
{
zipStream.Write(buffer, 0, byteCount);
int progressPercentage = (int)((_sofarReadSize / totalByte) * 100);
byteCount = inputStream.Read(buffer, 0, buffer.Length);
_sofarReadSize += byteCount;
UpdateCompletionStatus.ShowCompletionStatus(progressPercentage, "File compression in progress...");
}
}
}
File.Delete(FilePath);
return(true);
}
catch (Exception ex)
{
return(false);
throw new TargetInvocationException(ex);
}
}
/// <summary>
/// Shows the percentage of work completed when backuping/restoring
/// </summary>
/// <returns></returns>
public void PercentComplete(object sender, PercentCompleteEventArgs e)
{
try
{
string _message = TaskIsBackup == true ? "Database backup in progress..." : "Database restore in progress...";
UpdateCompletionStatus.ShowCompletionStatus(e.Percent, _message);
CurrentProgress = e.Percent;
Console.WriteLine(e.Percent);
}
catch (Exception ex)
{
throw new TargetInvocationException(ex);
}
}
/// <summary>
/// Extracts the .zip file
/// </summary>
/// <param name="zipFileName">zip file to be extracted </param>
/// <returns></returns>
public string ExtractZipFile(string zipFileName)
{
ZipFile zf = null;
string fullZipToPath = String.Empty;
string outputFolder = Path.GetDirectoryName(zipFileName);
try
{
FileStream fs = File.OpenRead(zipFileName);
zf = new ZipFile(fs);
zf.Password = Password; //GetServerPassword(DbName);
int byteCount = 0;
double totalByte;
double _sofarReadSize = 0;
foreach (ZipEntry zipEntry in zf)
{
if (!zipEntry.IsFile)
{
continue; // Ignore directories
}
String entryFileName = zipEntry.Name;
byte[] buffer = new byte[4096]; // 4K is optimum
Stream zipStream = zf.GetInputStream(zipEntry);
// Manipulate the output filename here as desired.
fullZipToPath = Path.Combine(outputFolder, entryFileName);
string directoryName = Path.GetDirectoryName(fullZipToPath);
if (directoryName.Length > 0)
{
Directory.CreateDirectory(directoryName);
}
using (FileStream streamWriter = File.Create(fullZipToPath))
{
byteCount = streamWriter.Read(buffer, 0, buffer.Length);
totalByte = streamWriter.Length;
_sofarReadSize += byteCount;
StreamUtils.Copy(zipStream, streamWriter, buffer);
int progressPercentage = (int)((_sofarReadSize / totalByte) * 100);
UpdateCompletionStatus.ShowCompletionStatus(progressPercentage, "Extracting file in progress...");
}
}
}
finally
{
if (zf != null)
{
zf.IsStreamOwner = true;
zf.Close();
}
}
return(fullZipToPath); //extracted file path
}
