Xojo Plugin

Iterate Through ZIP Entries Using EntryAt and ZipEntry.GetNext

See more Zip Examples

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.

Xojo Plugin

Dim success As Boolean
success = False

Dim zip As New Chilkat.Zip

// Open an existing ZIP archive.
success = zip.OpenZip("c:/temp/example.zip")
If (success = False) Then
    System.DebugLog(zip.LastErrorText)
    Return
End If

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

    System.DebugLog("The ZIP archive is empty.")

    zip.CloseZip 
    Return
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.
// 
Dim entry As New Chilkat.ZipEntry

success = zip.EntryAt(0,entry)
If (success = False) Then
    System.DebugLog(zip.LastErrorText)
    Return
End If

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

    If (entry.IsDirectory = True) Then

        System.DebugLog("[Directory] " + entry.FileName)

    Else

        System.DebugLog("[File] " + entry.FileName)
    End If

    // Advance to the next entry.
    success = entry.GetNext()
Wend

zip.CloseZip 

System.DebugLog("Done.")