Xojo Plugin

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.

Xojo Plugin

Dim success As Boolean
success = False

Dim zip As New Chilkat.Zip

// Open an existing ZIP archive.
success = zip.OpenZip("c:/temp/sample.zip")
If (success = False) Then
    System.DebugLog(zip.LastErrorText)
    Return
End If

// ------------------------------------------------------------
// Find the first ZIP entry matching the wildcard pattern:
// 
//     docs/*
// 
// Matching is performed against the full stored ZIP path.
// 
Dim entry As New Chilkat.ZipEntry

success = zip.EntryMatching("docs/*",entry)
If (success = False) Then
    System.DebugLog("No matching entries found.")
    zip.CloseZip 
    Return
End If

// ------------------------------------------------------------
// Iterate through all matching entries.
// 
// GetNextMatch updates the same ZipEntry object so that
// it represents the next matching entry.
// 
While (success = True)
    If (entry.IsDirectory = True) Then
        System.DebugLog("[Directory] " + entry.FileName)
    Else
        System.DebugLog("[File] " + entry.FileName)
    End If

    // Advance to the next matching entry.
    success = entry.GetNextMatch("docs/*")
Wend

zip.CloseZip 

System.DebugLog("Done.")