(PowerShell) Find a ZIP Entry by Exact Path Using EntryOf

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This example demonstrates how to use the EntryOf method to find a ZIP entry whose stored path exactly matches a specified path.

Unlike EntryMatching, which performs wildcard matching, EntryOf performs an exact path lookup.

This method is useful when:

• The exact ZIP path is already known
• Retrieving a specific file or directory entry
• Verifying whether a particular entry exists in the ZIP archive

Suppose the ZIP archive contains:

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

ZIP archives may optionally contain explicit directory entries such as docs/. These directory entries can also be retrieved using EntryOf.

The example:

• Finds an exact file entry
• Finds an exact directory entry
• Demonstrates the difference between file and directory entries

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat .NET Downloads Chilkat .NET Assemblies

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

$success = $false

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$success = $false

# Open an existing ZIP archive.
$zip = New-Object Chilkat.Zip

$success = $zip.OpenZip("example.zip")
if ($success -eq $false) {
    $($zip.LastErrorText)
    exit
}

$entry = New-Object Chilkat.ZipEntry

# ------------------------------------------------------------
# Find a specific file entry by its exact ZIP path.

$success = $zip.EntryOf("docs/readme.txt",$entry)

if ($success -eq $true) {
    $("Found file entry:")
    $("  FileName = " + $entry.FileName)
    $("  IsDirectory = " + $entry.IsDirectory)
    $("")
}

# ------------------------------------------------------------
# Find a directory entry.
# 
# ZIP archives may optionally contain explicit directory entries.
# In this example, "docs/" is a separate directory entry.

$success = $zip.EntryOf("docs/",$entry)

if ($success -eq $true) {
    $("Found directory entry:")
    $("  FileName = " + $entry.FileName)
    $("  IsDirectory = " + $entry.IsDirectory)
    $("")
}

# ------------------------------------------------------------
# Attempt to find a non-existent entry.

$success = $zip.EntryOf("images/missing.png",$entry)

if ($success -eq $false) {
    $("The entry images/missing.png was not found.")
}

$zip.CloseZip()

$("Done.")