Unzip Files Matching a Pattern

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Perl script to unzip only those files with filenames matching a wildcarded pattern.

# file: UnzipMatching.pl

use chilkat;

# Unzip all files matching a wildcarded pattern.
$zip = new chilkat::CkZip();
$zip->UnlockComponent("anything for 30-day trial");

# Open an already-existing zip
$success = $zip->OpenZip("exampleData.zip");
if ($success)
{
	# The zip in this example contains these files and directories:
	# exampleData\
	# exampleData\hamlet.xml
	# exampleData\123\
	# exampleData\aaa\
	# exampleData\123\hello.txt
	# exampleData\aaa\banner.gif
	# exampleData\aaa\dude.gif
	# exampleData\aaa\xyz\	

	# Unzip all .gif files into the "images_2" subdirectory
	# If verbose is set to true, the last-error information will contain
	# a log of each file tested and whether it matched or not.
	# The UnzipMatchingInto method discards the path information associated
	# with each matching file within the zip and unzips each file
	# directly into the directory specified.
	$verbose = false;
	$numUnzipped = $zip->UnzipMatchingInto("images_2","*.gif",$verbose);
	printf("numUnzipped = %d\n",$numUnzipped);

	# If UnzipMatching is called (instead of UnzipMatchingInto), each matching
	# file is unzipped to a directory consistent with the path information stored
	# within the $zip->  For example, "exampleData\aaa\dude.gif" is unzipped to
	# "images_3\exampleData\aaa\dude.gif"
	$numUnzipped = $zip->UnzipMatching("images_3","*.gif",$verbose);
	printf("numUnzipped = %d\n",$numUnzipped);
}
else
{
	# Failed to open the .zip archive.
	$zip->SaveLastError("openZipError.txt")
}