(Perl) Append Files to Existing Zip w/out Rewriting Entire Zip

Demonstrates how to use the QuickAppend method to append files to an existing .zip archive. This method works by editing the existing .zip -- it does not rewrite or recompress the contents of the existing .zip. It is the fastest way to append additional files to a pre-existing large .zip archive. Note: The QuickAppend method is new and available in the pre-release downloads, or in official releases dated after 6-October-2007.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$zip = chilkat::CkZip->new();

# The NewZip method only initializes the Zip object -- it does
# not create or write a .zip file.
$success = $zip->NewZip("notUsed.zip");
if ($success != 1) {
    print $zip->lastErrorText() . "\r\n";
    exit;
}

# Add a reference to a file.  This is the file that will
# be added to a pre-existing .zip archive.  
# Note: this does not read or compress the file contents --
# it simply adds a reference to the zip object.
$saveExtraPath = 0;
$success = $zip->AppendOneFileOrDir("something.dat",$saveExtraPath);
if ($success != 1) {
    print $zip->lastErrorText() . "\r\n";
    exit;
}

# Appends the contents of the zip object to the preExisting.zip
# zip archive.  preExisting.zip is opened, and the files
# referenced by this zip object are streamed in, compressed,
# and appended to the end of the archive.
$success = $zip->QuickAppend("preExisting.zip");
if ($success != 1) {
    print $zip->lastErrorText() . "\r\n";
    exit;
}

print "Success!" . "\r\n";

# Note: Additional files, directory trees, or in-memory data
# can be appended by calling AppendOneFileOrDir, AppendFiles,
# AppendString, AppendData, etc. multiple times.
# Whatever files and/or in-memory data that are referenced by
# this zip object will be appended to preExisting.zip when
# QuickAppend is called