Visual FoxPro

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.

Visual FoxPro

LOCAL lnSuccess
LOCAL loZip
LOCAL loEntry

lnSuccess = 0

loZip = CreateObject('Chilkat.Zip')

* Open an existing ZIP archive.
lnSuccess = loZip.OpenZip("c:/temp/example.zip")
IF (lnSuccess = 0) THEN
    ? loZip.LastErrorText
    RELEASE loZip
    CANCEL
ENDIF

* A ZIP archive may contain zero entries.
IF (loZip.NumEntries = 0) THEN

    ? "The ZIP archive is empty."

    loZip.CloseZip()
    RELEASE loZip
    CANCEL
ENDIF

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

lnSuccess = loZip.EntryAt(0,loEntry)
IF (lnSuccess = 0) THEN
    ? loZip.LastErrorText
    RELEASE loZip
    RELEASE loEntry
    CANCEL
ENDIF

* ------------------------------------------------------------
* Iterate through all ZIP entries.
* 
* GetNext updates the same ZipEntry object so that it
* represents the next entry in the ZIP archive.
* 
DO WHILE (lnSuccess = 1)

    IF (loEntry.IsDirectory = 1) THEN

        ? "[Directory] " + loEntry.FileName

    ELSE

        ? "[File] " + loEntry.FileName
    ENDIF

    * Advance to the next entry.
    lnSuccess = loEntry.GetNext()
ENDDO

loZip.CloseZip()

? "Done."

RELEASE loZip
RELEASE loEntry