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Zip a directory to memory in Ruby. The rubyzip library is pretty hard to use. I tried for ages to figure out how to zip a directory to a string in memory. So here's an example that zips the given directory to a Ruby StringIO object using rubyzip.
require 'zip/zip'
def zip(dir)
Zip::ZipOutputStream::write_buffer do |zos|
Dir["#{dir}/**/**"].each do |file|
path_for_file_in_zip = file.sub(/\A#{dir}\//, '')
if !
zip_entry = zos.put_next_entry(path_for_file_in_zip)
zos <<
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