////////////////////////////////////////////////////////////////////
// Open zip file
////////////////////////////////////////////////////////////////////
private void OnOpen
(
object sender,
EventArgs e
)
{
// get zip file name from operator
OpenFileDialog OFD = new OpenFileDialog();
OFD.Filter = "Zip files (*.ZIP)|*.ZIP";
OFD.CheckFileExists = true;
OFD.CheckPathExists = true;
OFD.RestoreDirectory = true;
if (OFD.ShowDialog() != DialogResult.OK)
{
return;
}
// display empty datagrid
AddDataGrid();
// trace
Trace.Write("Open exising ZIP archive: " + OFD.FileName);
// create inflate object
if (Inflate == null)
{
Inflate = new InflateZipFile();
}
// inflate is already open
else if (InflateZipFile.IsOpen(Inflate))
{
// delete zip directory
ZipDir = null;
// close previous zip archive (if open)
Inflate.CloseZipFile();
// display empty directory in data grid view
LoadDataGrid();
}
// open zip file and load zip file directory
if (Inflate.OpenZipFile(OFD.FileName))
{
MessageBox.Show("Open ZIP file Error\n" + Inflate.ExceptionStack[0] + "\n" + Inflate.ExceptionStack[1]);
return;
}
// get zip directory
ZipDir = Inflate.ZipDir;
// display zip file directory in data grid view
LoadDataGrid();
return;
}
private void OnClosing
(
object sender,
FormClosingEventArgs e
)
{
// user pressed cancel
if (DialogResult == DialogResult.Cancel)
{
return;
}
// user does not want to save the file
if (NoSaveRadioButton.Checked)
{
// close zip file
Inflate.CloseZipFile();
return;
}
// create backup copy name
Int32 Ptr = Inflate.ArchiveName.LastIndexOf('.');
String BackupName;
for (Int32 No = 0;; No++)
{
String CopyMsg = No == 0 ? " - Copy" : String.Format(" - Copy{0}", No);
BackupName = Inflate.ArchiveName.Insert(Ptr, CopyMsg);
if (!File.Exists(BackupName))
{
break;
}
}
try
{
// make a copy of the open archive file
File.Copy(Inflate.ArchiveName, BackupName);
}
catch (Exception Ex)
{
// copy failed
MessageBox.Show(this, "Backup copy failed\n" + Ex.Message,
"Backup Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
e.Cancel = true;
return;
}
// close zip file
Inflate.CloseZipFile();
// save to recycle bin
if (RecycleBinRadioButton.Checked)
{
try
{
// save file to recycle bin
MSFileIO.FileSystem.DeleteFile(Inflate.ArchiveName, MSFileIO.UIOption.OnlyErrorDialogs, MSFileIO.RecycleOption.SendToRecycleBin);
}
catch (Exception Ex)
{
// save file to recycle bin failed
MessageBox.Show(this, "Send to recycle bin failed\n" +
"File saved as: " + BackupName + "\n" + Ex.Message,
"Send to Recycle Bin Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
try
{
// rename the backup copy to original name
File.Move(BackupName, Inflate.ArchiveName);
}
catch (Exception Ex)
{
// rename failed
MessageBox.Show(this, "Rename failed\n" + Ex.Message,
"Rename Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
throw new ApplicationException("Archive file is not available\n" + Inflate.ArchiveName);
}
}
// successful return with DialogResult.OK
return;
}
////////////////////////////////////////////////////////////////////
// Test Single File
////////////////////////////////////////////////////////////////////
private Int32 TestZip()
{
// add extension to compressed file name
CompFileName += ".zip";
// create compressiom object
DeflateZipFile Def = new DeflateZipFile(CompLevel);
// create empty zip file
if (Def.CreateArchive(CompFileName))
{
// save exception stack on error
ExceptionStack = Def.ExceptionStack;
return(1);
}
// split the input file name to path and name
String FileName;
Int32 Ptr = InputFileName.LastIndexOf('\\');
FileName = Ptr < 0 ? InputFileName : InputFileName.Substring(Ptr + 1);
// save start time
Int32 StartTime = Environment.TickCount;
// compress file
if (Def.Compress(InputFileName, FileName))
{
// save exception stack on error
ExceptionStack = Def.ExceptionStack;
return(1);
}
// save compression elapse time
CompTime = Environment.TickCount - StartTime;
// save input and compressed file length
InputFileLen = Def.ReadTotal;
CompFileLen = Def.WriteTotal;
// save archive
if (Def.SaveArchive())
{
// save exception stack on error
ExceptionStack = Def.ExceptionStack;
return(1);
}
// save start time
StartTime = Environment.TickCount;
// create decompression object
InflateZipFile Inf = new InflateZipFile();
// open the zip file
if (Inf.OpenZipFile(CompFileName))
{
// save exception stack on error
ExceptionStack = Inf.ExceptionStack;
return(2);
}
// decompress the file
if (Inf.DecompressZipFile(Inf.ZipDir[0], null, DecompFileName, false, true))
{
// save exception stack on error
ExceptionStack = Inf.ExceptionStack;
return(2);
}
// save decompression elapse time
DecompTime = Environment.TickCount - StartTime;
// save restored file length
DecompFileLen = Inf.WriteTotal;
// close the zip file
Inf.CloseZipFile();
// successful exit
return(0);
}
