(VBScript) Iterate Through ZIP Entries Using EntryAt and ZipEntry.GetNext

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This example demonstrates how to iterate through all entries in a ZIP archive using:

• Zip.EntryAt to obtain the first entry
• ZipEntry.GetNext to advance through the remaining entries

The example prints each ZIP entry's stored filename and whether the entry is a file or directory.

This approach is useful when sequentially processing ZIP entries without repeatedly calling EntryAt by index.

Suppose the ZIP archive contains:

docs/
docs/readme.txt
images/logo.png
hello.txt

The example iterates through each entry in the order stored within the ZIP archive.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

set zip = CreateObject("Chilkat.Zip")

' Open an existing ZIP archive.
success = zip.OpenZip("c:/temp/example.zip")
If (success = 0) Then
    outFile.WriteLine(zip.LastErrorText)
    WScript.Quit
End If

' A ZIP archive may contain zero entries.
If (zip.NumEntries = 0) Then

    outFile.WriteLine("The ZIP archive is empty.")

    zip.CloseZip 
    WScript.Quit
End If

' ------------------------------------------------------------
' Get the first ZIP entry.
' 
' EntryAt(0,entry) initializes the ZipEntry object so that
' it represents the first entry in the ZIP archive.
' 
set entry = CreateObject("Chilkat.ZipEntry")

success = zip.EntryAt(0,entry)
If (success = 0) Then
    outFile.WriteLine(zip.LastErrorText)
    WScript.Quit
End If

' ------------------------------------------------------------
' Iterate through all ZIP entries.
' 
' GetNext updates the same ZipEntry object so that it
' represents the next entry in the ZIP archive.
' 
Do While (success = 1)

    If (entry.IsDirectory = 1) Then

        outFile.WriteLine("[Directory] " & entry.FileName)

    Else

        outFile.WriteLine("[File] " & entry.FileName)
    End If

    ' Advance to the next entry.
    success = entry.GetNext()
Loop

zip.CloseZip 

outFile.WriteLine("Done.")

outFile.Close