(Ruby) 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 Ruby Downloads Ruby Library for Linux and MAC OS X

require '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 in 0 .. 24
    # 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()))
    end

    sbCompressedBase64.Append(compress.moreCompressStringENC(": This is a line of data to be compressed...\r\n"))
end

# Flush any remaining output.
sbCompressedBase64.Append(compress.endCompressStringENC())

print "The base64 encoded compressed text:" + "\n";
print sbCompressedBase64.getAsString() + "\n";

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