Lianja

Iterate Through Matching ZIP Entries Using EntryMatching and ZipEntry.GetNextMatch

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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.

Lianja

llSuccess = .F.

loZip = createobject("CkZip")

// Open an existing ZIP archive.
llSuccess = loZip.OpenZip("c:/temp/sample.zip")
if (llSuccess = .F.) then
    ? loZip.LastErrorText
    release loZip
    return
endif

// ------------------------------------------------------------
// Find the first ZIP entry matching the wildcard pattern:
// 
//     docs/*
// 
// Matching is performed against the full stored ZIP path.
// 
loEntry = createobject("CkZipEntry")

llSuccess = loZip.EntryMatching("docs/*",loEntry)
if (llSuccess = .F.) then
    ? "No matching entries found."
    loZip.CloseZip()
    release loZip
    release loEntry
    return
endif

// ------------------------------------------------------------
// Iterate through all matching entries.
// 
// GetNextMatch updates the same ZipEntry object so that
// it represents the next matching entry.
// 
do while (llSuccess = .T.)
    if (loEntry.IsDirectory = .T.) then
        ? "[Directory] " + loEntry.FileName
    else
        ? "[File] " + loEntry.FileName
    endif

    // Advance to the next matching entry.
    llSuccess = loEntry.GetNextMatch("docs/*")
enddo

loZip.CloseZip()

? "Done."


release loZip
release loEntry