Lianja

Add a Common Root Directory to ZIP Entries Using PathPrefix

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This example demonstrates how to use the PathPrefix property to prepend a common directory path to all entries added to a ZIP archive.

The PathPrefix value is prepended to the stored ZIP paths for subsequently added entries.

This is useful when:

• Creating ZIP archives that extract beneath a single root directory
• Packaging applications or projects into a named top-level folder
• Avoiding extraction directly into the current directory
• Organizing ZIP contents beneath a common parent directory

Suppose the local filesystem contains:

c:/MyProject/src/main.cpp
c:/MyProject/src/util.cpp
c:/MyProject/docs/readme.txt

And suppose the following code is executed:

zip.PathPrefix = "MyProject/";

Then the ZIP archive will contain:

MyProject/src/main.cpp
MyProject/src/util.cpp
MyProject/docs/readme.txt

Without a PathPrefix, the ZIP archive would instead contain:

src/main.cpp
src/util.cpp
docs/readme.txt

The PathPrefix is applied only to entries added after the property is set.

Lianja

llSuccess = .F.

loZip = createobject("CkZip")

// Create a new ZIP archive.
llSuccess = loZip.NewZip("MyProject.zip")
if (llSuccess = .F.) then
    ? loZip.LastErrorText
    release loZip
    return
endif

// Prepend "MyProject/" to all subsequently added ZIP entries.
// 
// This causes all files to extract beneath a top-level
// directory named "MyProject".
loZip.PathPrefix = "MyProject/"

// Recursively add project files.
// 
// Because saveExtraPath = .F., the stored ZIP paths
// will normally begin with:
// 
//     src/
//     docs/
// 
// But because PathPrefix = "MyProject/",
// the final ZIP paths become:
// 
//     MyProject/src/
//     MyProject/docs/
// 
llRecurse = .T.
llSuccess = loZip.AppendFiles("c:/MyProject/*",llRecurse)

if (llSuccess = .F.) then
    ? loZip.LastErrorText
    release loZip
    return
endif

// Write the ZIP archive and close it.
llSuccess = loZip.WriteZipAndClose()
if (llSuccess = .F.) then
    ? loZip.LastErrorText
    release loZip
    return
endif

? "ZIP archive created successfully."


release loZip