PowerShell

Replace/Update a FIle in a .zip

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Demonstrates how to replace/update a file from a .zip. Note: This requires the entire .zip to be rewritten. PowerShell

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

$success = $false

# This requires the Chilkat Zip API to have been previously unlocked.
# See Unlock Chilkat Zip for sample code.

# First prepare a .zip and write it..
$zip = New-Object Chilkat.Zip

$zip.NewZip("qa_output/abc.zip")

# Add some files..
$charset = "utf-8"
$zip.AddString("a.txt","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",$charset)
$zip.AddString("b.txt","bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",$charset)
$zip.AddString("c.txt","cccccccccccccccccccccccccccccccccccc",$charset)

# Write to qa_output/abc.zip
# This .zip contains three files: a.txt, b.txt, and c.txt
$success = $zip.WriteZipAndClose()

# -------------------------------------------------------------------
# Open abc.zip, replace the content of the "b.txt" entry with something else, and re-write.
$zip2 = New-Object Chilkat.Zip
$zip2.OpenZip("qa_output/abc.zip")

$entry = New-Object Chilkat.ZipEntry
if ($zip2.EntryOf("b.txt",$entry) -eq $true) {
    $entry.ReplaceString("This is the new content.  bbbbbbbbbbbbbbbbbbbbbb","utf-8")
}

# Write the modified .zip back to "abc.zip"
$success = $zip2.WriteZipAndClose()

$("success.")