(Perl) Compress String Feed to Base64

This example receives incoming text data in chunks, compresses as a stream, and accumulates the compressed data in base64.

The purpose is to demonstrate the BeginCompressStringENC, MoreCompressStringENC, and EndCompressStringENC methods.

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

use chilkat();

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

$sbCompressedBase64 = chilkat::CkStringBuilder->new();

$compress = chilkat::CkCompression->new();
$compress->put_Algorithm("deflate");
$compress->put_Charset("utf-8");
$compress->put_EncodingMode("base64");

$sbIndex = chilkat::CkStringBuilder->new();

for ($i = 0; $i <= 24; $i++) {
    # Note: It is possible (and normal) for a BeginCompress* or MoreCompress* method to return
    # an empty string (or 0 bytes).  When this happens, the input data is not lost.  It will be flushed
    # in a subsequent call.
    $sbIndex->Clear();
    $sbIndex->AppendInt($i);
    if ($i == 0) {
        $sbCompressedBase64->Append($compress->beginCompressStringENC($sbIndex->getAsString()));
    }
    else {
        $sbCompressedBase64->Append($compress->moreCompressStringENC($sbIndex->getAsString()));
    }

    $sbCompressedBase64->Append($compress->moreCompressStringENC(": This is a line of data to be compressed...\r\n"));
}

# Flush any remaining output.
$sbCompressedBase64->Append($compress->endCompressStringENC());

print "The base64 encoded compressed text:" . "\r\n";
print $sbCompressedBase64->getAsString() . "\r\n";

# Now decompress in one call:
$originalText = $compress->decompressStringENC($sbCompressedBase64->getAsString());
print $originalText . "\r\n";