Inflate to In-Memory Binary Data

Ruby script to inflate a binary file (GIF image file) contained within a .zip directoy into memory. The example then uploads the data to an FTP server. In the entire process, no file on the local filesystem is written.

Download Ruby Programming Example Scripts

# file: InflateToBinary.rb

require 'chilkat'

# Inflate binary data into memory.
zip = Chilkat::CkZip.new()
zip.UnlockComponent("anything for 30-day trial")

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\	
	
	# Forward and backward slashes are equivalent and either can be used..
	zipEntry = zip.FirstMatchingEntry("*/dude.gif")
	if (zipEntry != nil) 
		gifData = Chilkat::CkByteData.new()
		zipEntry.Inflate(gifData)
		
		# Upload the binary data directly to
		# an FTP server without ever having to write
		# an actual .zip on the local filesystem...
		ftp = Chilkat::CkFtp2.new()
		ftp.UnlockComponent("anything for 30-day trial")
		ftp.put_Hostname("www.chilkatsoft.com")
		ftp.put_Username("myLogin")
		ftp.put_Password("myPassword")
		success = ftp.Connect()
		if (success)
			ftp.ChangeRemoteDir("d2")
			remoteFilename = "dude.gif"
			success = ftp.PutFileFromBinaryData(remoteFilename,gifData)
			if (success)
				printf("Uploaded GIF image to FTP server!\n")
			else
				ftp.SaveLastError("ftpPutError.txt")
			end
		else
			ftp.SaveLastError("ftpError.txt")
		end	
	else
		printf("Failed to find hello.txt!\n")
	end
else
	# Failed to open the .zip archive.
	zip.SaveLastError("openZipError.txt")
end