Replace a File within a Zip

Demonstrates how to replace a file within a .zip

Download Chilkat Ruby Library

require 'chilkat'

zip = Chilkat::CkZip.new()

#  Any string unlocks the component for the 1st 30-days.
success = zip.UnlockComponent("Anything for 30-day trial")
if (success != true)
    print zip.lastErrorText() + "\n"
    exit
end

success = zip.OpenZip("a.zip")
if (success != true)
    print zip.lastErrorText() + "\n"
    exit
end

#  Locate the entry:
entry = zip.FirstMatchingEntry("*HelloWorld123.txt")

if (!(entry == nil ))

    zip.DeleteEntry(entry)

    saveExtraPath = false
    success = zip.AppendOneFileOrDir("c:/temp/HelloWorld123.txt",saveExtraPath)
    if (success != true)
        print zip.lastErrorText() + "\n"
        exit
    end

    success = zip.WriteZipAndClose()
    if (success != true)
        print zip.lastErrorText() + "\n"
        exit
    end

    print "Entry replaced and .zip re-written." + "\n"

else
    print "Entry not found." + "\n";
end