Visual FoxPro

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

Visual FoxPro

LOCAL lnSuccess
LOCAL loZip
LOCAL loEntry

lnSuccess = 0

lnSuccess = 0

* Open an existing ZIP archive.
loZip = CreateObject('Chilkat.Zip')

lnSuccess = loZip.OpenZip("example.zip")
IF (lnSuccess = 0) THEN
    ? loZip.LastErrorText
    RELEASE loZip
    CANCEL
ENDIF

loEntry = CreateObject('Chilkat.ZipEntry')

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

lnSuccess = loZip.EntryMatching("*.png",loEntry)

IF (lnSuccess = 1) THEN
    ? "Found PNG file:"
    ? "  " + loEntry.FileName
    ? ""
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.

lnSuccess = loZip.EntryMatching("docs/*",loEntry)

IF (lnSuccess = 1) THEN
    ? "First matching docs entry:"
    ? "  " + loEntry.FileName
    ? "  IsDirectory = " + STR(loEntry.IsDirectory)
    ? ""
ENDIF

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

lnSuccess = loZip.EntryMatching("*.json",loEntry)

IF (lnSuccess = 1) THEN
    ? "Found JSON file:"
    ? "  " + loEntry.FileName
    ? ""
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.

loZip.CloseZip()

? "Done."

RELEASE loZip
RELEASE loEntry