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Get Compressed ZIP Entry Data as Base64 Using ZipEntry.CopyToBase64

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This example creates a small ZIP archive containing a text file added from memory, writes the ZIP to disk, re-opens it, and then uses ZipEntry.CopyToBase64 to retrieve the compressed data for the text file as a Base64-encoded string.

The Base64 string returned by CopyToBase64 represents the compressed bytes stored for the entry inside the ZIP archive. It is not the original uncompressed text data.

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Local $bSuccess = False

; ------------------------------------------------------------
; First create a sample ZIP archive containing a small text file.

$oZip = ObjCreate("Chilkat.Zip")

$bSuccess = $oZip.NewZip("c:/temp/sampleText.zip")
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

; Add a small text file from memory.
; The text is stored in the ZIP as "hello.txt".
$bSuccess = $oZip.AddString("hello.txt","Hello from a ZIP entry!","utf-8")
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

; Write the ZIP archive to disk and close it.
$bSuccess = $oZip.WriteZipAndClose()
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

; ------------------------------------------------------------
; Now open the ZIP archive we just created.

$oZip2 = ObjCreate("Chilkat.Zip")

$bSuccess = $oZip2.OpenZip("c:/temp/sampleText.zip")
If ($bSuccess = False) Then
    ConsoleWrite($oZip2.LastErrorText & @CRLF)
    Exit
EndIf

; Get the text file entry.
$oEntry = ObjCreate("Chilkat.ZipEntry")

$bSuccess = $oZip2.EntryOf("hello.txt",$oEntry)

If ($bSuccess = False) Then
    ConsoleWrite("Entry not found." & @CRLF)
    Exit
EndIf

; Get the compressed ZIP entry data as Base64.
; 
; This is the compressed data stored inside the ZIP file,
; not the uncompressed text "Hello from a ZIP entry!".
Local $sB64 = $oEntry.CopyToBase64()

ConsoleWrite("Base64 compressed ZIP entry data:" & @CRLF)
ConsoleWrite($sB64 & @CRLF)

$oZip2.CloseZip 

ConsoleWrite("Done." & @CRLF)