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Find ZIP Entries Matching a Wildcard Pattern Using EntryMatching

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This example demonstrates how to use the EntryMatching method to find ZIP entries whose stored paths match a wildcard pattern.

The wildcard character * matches zero or more characters. The comparison is performed against the full stored path within the ZIP archive.

This method is useful for:

  • Finding files having a particular extension
  • Locating files within specific subdirectories
  • Searching ZIP archives without manually iterating through every entry

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
images/logo.png
images/banner.jpg
data/config/settings.json

Notice that the ZIP archive contains an explicit directory entry named docs/. ZIP archives may optionally contain separate directory entries in addition to file entries.

When searching with the pattern docs/*, the first matching entry could therefore be the directory entry docs/ rather than a file contained within that directory.

The example searches for:

  • The first .png file
  • The first entry beneath the docs directory
  • The first JSON file anywhere within the ZIP archive

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Local $bSuccess = False

;  Open an existing ZIP archive.
$oZip = ObjCreate("Chilkat.Zip")

$bSuccess = $oZip.OpenZip("example.zip")
If ($bSuccess = False) Then
    ConsoleWrite($oZip.LastErrorText & @CRLF)
    Exit
EndIf

$oEntry = ObjCreate("Chilkat.ZipEntry")

;  ------------------------------------------------------------
;  Find the first .png file in the ZIP archive.

$bSuccess = $oZip.EntryMatching("*.png",$oEntry)

If ($bSuccess = True) Then
    ConsoleWrite("Found PNG file:" & @CRLF)
    ConsoleWrite("  " & $oEntry.FileName & @CRLF)
    ConsoleWrite("" & @CRLF)
EndIf

;  ------------------------------------------------------------
;  Find the first entry beneath the docs directory.
;  
;  Note: ZIP archives may optionally contain explicit directory
;  entries such as "docs/" in addition to file entries.
;  Therefore, the first matching entry could be the directory
;  itself rather than a file contained within the directory.

$bSuccess = $oZip.EntryMatching("docs/*",$oEntry)

If ($bSuccess = True) Then
    ConsoleWrite("First matching docs entry:" & @CRLF)
    ConsoleWrite("  " & $oEntry.FileName & @CRLF)
    ConsoleWrite("  IsDirectory = " & $oEntry.IsDirectory & @CRLF)
    ConsoleWrite("" & @CRLF)
EndIf

;  ------------------------------------------------------------
;  Find the first JSON file anywhere in the ZIP archive.

$bSuccess = $oZip.EntryMatching("*.json",$oEntry)

If ($bSuccess = True) Then
    ConsoleWrite("Found JSON file:" & @CRLF)
    ConsoleWrite("  " & $oEntry.FileName & @CRLF)
    ConsoleWrite("" & @CRLF)
EndIf

;  ------------------------------------------------------------
;  The matching is performed against the full stored ZIP path.
;  For example:
;  
;      docs/readme.txt
;      images/logo.png
;      data/config/settings.json
;  
;  The wildcard '*' matches zero or more characters.

$oZip.CloseZip 

ConsoleWrite("Done." & @CRLF)