AutoIt Requires Chilkat v11.0.0+

Remove an Entry from an Existing ZIP Using DeleteEntry

See more Zip Examples

This example demonstrates how to use the DeleteEntry method to remove a file from an existing ZIP archive.

The example:

• Creates a ZIP archive containing three text files
• Opens the ZIP archive for modification
• Finds and deletes one entry
• Writes the modified ZIP archive to a new filename

Suppose the original ZIP archive contains:

a.txt
b.txt
c.txt

After deleting b.txt, the modified ZIP archive contains:

a.txt
c.txt

The entry is removed only from the in-memory ZIP object until a Write* method is called.

AutoIt

Local $bSuccess = False

;  ------------------------------------------------------------
;  First create a ZIP archive containing three text files.

$oZip = ObjCreate("Chilkat.Zip")

$bSuccess = $oZip.NewZip("original.zip")
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

Local $sCharset = "utf-8"

$bSuccess = $oZip.AddString("a.txt","Contents of file A",$sCharset)
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oZip.AddString("b.txt","Contents of file B",$sCharset)
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

$bSuccess = $oZip.AddString("c.txt","Contents of file C",$sCharset)
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

;  Write the ZIP archive to disk.
;  
;  The ZIP now contains:
;  
;      a.txt
;      b.txt
;      c.txt
;  
$bSuccess = $oZip.WriteZipAndClose()
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

;  ------------------------------------------------------------
;  Open the existing ZIP archive for modification.

$oZip2 = ObjCreate("Chilkat.Zip")

$bSuccess = $oZip2.OpenZip("original.zip")
If ($bSuccess = False) Then
    ConsoleWrite($oZip2.LastErrorText & @CRLF)
    Exit
EndIf

;  Find the entry named "b.txt".
$oEntry = ObjCreate("Chilkat.ZipEntry")

$bSuccess = $oZip2.EntryOf("b.txt",$oEntry)
If ($bSuccess = False) Then
    ConsoleWrite($oZip2.LastErrorText & @CRLF)
    Exit
EndIf

;  Remove the entry from the in-memory ZIP object.
;  
;  At this point, the original ZIP file on disk is unchanged.
;  The deletion takes effect only after WriteZip or
;  WriteZipAndClose is called.
$bSuccess = $oZip2.DeleteEntry($oEntry)
If ($bSuccess = False) Then
    ConsoleWrite($oZip2.LastErrorText & @CRLF)
    Exit
EndIf

;  Write the modified ZIP archive to a new file.
$oZip2.FileName = "modified.zip"

$bSuccess = $oZip2.WriteZipAndClose()
If ($bSuccess = False) Then
    ConsoleWrite($oZip2.LastErrorText & @CRLF)
    Exit
EndIf

;  The modified ZIP now contains:
;  
;      a.txt
;      c.txt
;  

ConsoleWrite("ZIP archive updated successfully." & @CRLF)