PowerShell

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.

PowerShell

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

$zip = New-Object Chilkat.Zip

# Open an existing ZIP archive.
$success = $zip.OpenZip("c:/temp/sample.zip")
if ($success -eq $false) {
    $($zip.LastErrorText)
    exit
}

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

$success = $zip.EntryMatching("docs/*",$entry)
if ($success -eq $false) {
    $("No matching entries found.")
    $zip.CloseZip()
    exit
}

# ------------------------------------------------------------
# Iterate through all matching entries.
# 
# GetNextMatch updates the same ZipEntry object so that
# it represents the next matching entry.
# 
while (($success -eq $true)) {
    if ($entry.IsDirectory -eq $true) {
        $("[Directory] " + $entry.FileName)
    }
    else {
        $("[File] " + $entry.FileName)
    }

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

$zip.CloseZip()

$("Done.")