How to implement C # calling dynamic unlha32.dll to decompress the package file of Lha suffix
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The copy code is as follows:
Public class LhaUtity
{
/ get the version of DLL
[DllImport ("unlha32")]
Private static extern UInt16 UnlhaGetVersion ()
/ / /
/ 'get the implementation of DLL
/ / /
/ / whether it is successful or not
[DllImport ("unlha32")]
Private static extern Boolean UnlhaGetRunning ()
/ / /
/ / 'File check
/ / /
/ / /
/ / /
/ / /
[DllImport ("unlha32")]
Private static extern Boolean UnlhaCheckArchive (String szFileName, Int32 iMode)
/ / /
/ / decompress the file
/ / /
/ / /
/ / /
/ / /
/ / /
/ / /
[DllImport ("unlha32")]
Private static extern int Unlha (int hwnd, string szCmdLine, string szOutput, int dwSize)
/ / /
/ / Files that need to be extracted
/ / /
/ / decompress the file path
/ / decompress to the path
/ / whether to delete or not
Public static bool UnCompress (string archiveFile, string extractDir,bool isDeleteFile)
{
String extractFullPath = string.Empty
String startPath = AppDomain.CurrentDomain.BaseDirectory
If (! System.IO.File.Exists (archiveFile))
{
/ / decide whether to save the files that need to be unzipped
Throw new Exception (string.Format ("{0} that needs to be extracted does not exist", archiveFile))
}
Try
{
UInt16 ver = LhaUtity.UnlhaGetVersion ()
}
Catch (Exception ex)
{
Throw new Exception ("Unlha32.dll file not found")
}
If (UnlhaGetRunning ())
{
Throw new Exception ("DLL is executing")
}
If (! UnlhaCheckArchive (archiveFile, 0))
{
Throw new Exception ("File cannot be extracted")
}
/ / the path of decompression
If (string.IsNullOrEmpty (extractDir))
{
ExtractFullPath = string.Format (@ "{0} {1}\", startPath,archiveFile.Substring (archiveFile.LastIndexOf ("\") + 1 Magneto archiveFile.IndexOf (".lha")-1-archiveFile.LastIndexOf ("\")
}
Else
{
ExtractFullPath = extractDir
}
If (! System.IO.Directory.Exists (extractFullPath))
{
System.IO.Directory.CreateDirectory (extractFullPath)
}
Int ret = Unlha (0, string.Format ("x\" {0}\ "\" {1}\ ", archiveFile, extractFullPath), null, 0)
If (ret! = 0)
{
If (ret = = 32800)
{
Throw new Exception ("File unzipping cancel")
}
Else
{
Throw new Exception ("abnormal end of file extraction")
}
}
Else
{
If (isDeleteFile)
{
System.IO.File.Delete (archiveFile)
}
Return true
}
}
}
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