DataFlex

Create a ZIP Archive with a Top-Level Directory Using PathPrefix

This example demonstrates how to use the PathPrefix property to ensure that all files in a ZIP archive are stored beneath a common top-level directory.

The example recursively adds files from:

c:/zipTest/directory_name

And stores them in the ZIP archive beneath:

directory_name/

For example, the local filesystem file:

c:/zipTest/directory_name/hello.txt

Will be stored in the ZIP archive as:

directory_name/hello.txt

This is useful when creating ZIP archives that should extract into a single parent directory rather than directly into the current extraction location.

The example also demonstrates that methods such as AppendFiles initially add references to filesystem files, and that the actual file reading and compression occur later when WriteZipAndClose is called.

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoZip
    Boolean iRecurse
    String sTemp1

    Move False To iSuccess

    Get Create (RefClass(cComChilkatZip)) To hoZip
    If (Not(IsComObjectCreated(hoZip))) Begin
        Send CreateComObject of hoZip
    End

    // Initialize the Zip object and set the output filename.
    // The .zip file is not created until WriteZip or WriteZipAndClose is called.
    Get ComNewZip Of hoZip "qa_output/test.zip" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoZip To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Prepend "directory_name/" to each ZIP entry added after this point.
    // 
    // For example, a file found at:
    // 
    //     c:/zipTest/directory_name/hello.txt
    // 
    // Will be stored in the ZIP as:
    // 
    //     directory_name/hello.txt
    // 
    // This is useful when you want the files to unzip beneath a specific
    // top-level directory.
    Set ComPathPrefix Of hoZip To "directory_name/"

    // Recursively add references to all files beneath:
    // 
    //     c:/zipTest/directory_name
    // 
    // AppendFiles does not immediately read or compress the files.
    // It adds references to files in the local filesystem.
    // The referenced files are read and compressed when WriteZipAndClose is called.
    Move True To iRecurse

    Get ComAppendFiles Of hoZip "c:/zipTest/directory_name/*" iRecurse To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoZip To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Write the ZIP archive and close it.
    Get ComWriteZipAndClose Of hoZip To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoZip To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "Success."


End_Procedure