DataFlex

Iterate Through Matching ZIP Entries Using EntryMatching and ZipEntry.GetNextMatch

See more Zip Examples

This example demonstrates how to iterate through ZIP entries matching a wildcard pattern using:

• Zip.EntryMatching to obtain the first matching entry
• ZipEntry.GetNextMatch to advance to subsequent matching entries

The wildcard character * matches zero or more characters. Matching is performed against the full stored ZIP entry path.

The example searches for all entries beneath the docs/ directory.

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
docs/sub1/notes.txt
images/logo.png
hello.txt

The wildcard pattern:

docs/*

Matches:

docs/
docs/readme.txt
docs/manual.pdf
docs/sub1/notes.txt

Note that ZIP archives may optionally contain separate directory entries. Therefore, the first matching entry may be the directory entry docs/ rather than a file entry.

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoZip
    Variant vEntry
    Handle hoEntry
    String sTemp1
    Boolean bTemp1

    Move False To iSuccess

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

    // Open an existing ZIP archive.
    Get ComOpenZip Of hoZip "c:/temp/sample.zip" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoZip To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // ------------------------------------------------------------
    // Find the first ZIP entry matching the wildcard pattern:
    // 
    //     docs/*
    // 
    // Matching is performed against the full stored ZIP path.
    // 
    Get Create (RefClass(cComChilkatZipEntry)) To hoEntry
    If (Not(IsComObjectCreated(hoEntry))) Begin
        Send CreateComObject of hoEntry
    End

    Get pvComObject of hoEntry to vEntry
    Get ComEntryMatching Of hoZip "docs/*" vEntry To iSuccess
    If (iSuccess = False) Begin
        Showln "No matching entries found."
        Send ComCloseZip To hoZip
        Procedure_Return
    End

    // ------------------------------------------------------------
    // Iterate through all matching entries.
    // 
    // GetNextMatch updates the same ZipEntry object so that
    // it represents the next matching entry.
    // 
    While (iSuccess = True)
        Get ComIsDirectory Of hoEntry To bTemp1
        If (bTemp1 = True) Begin
            Get ComFileName Of hoEntry To sTemp1
            Showln "[Directory] " sTemp1
        End
        Else Begin
            Get ComFileName Of hoEntry To sTemp1
            Showln "[File] " sTemp1
        End

        // Advance to the next matching entry.
        Get ComGetNextMatch Of hoEntry "docs/*" To iSuccess
    Loop

    Send ComCloseZip To hoZip

    Showln "Done."


End_Procedure