Adjustments for RubyZip 3.0

[nodeg]

RubyZip is giving the following warning:

root@head-min-centos7 ~]# gem install tetra
Fetching: clamp-1.3.2.gem (100%)
Successfully installed clamp-1.3.2
Fetching: json_pure-2.6.2.gem (100%)
Successfully installed json_pure-2.6.2
Fetching: open4-1.3.4.gem (100%)
Successfully installed open4-1.3.4
Fetching: rubyzip-2.3.2.gem (100%)
RubyZip 3.0 is coming!
**********************

The public API of some Rubyzip classes has been modernized to use named
parameters for optional arguments. Please check your usage of the
following classes:
  * `Zip::File`
  * `Zip::Entry`
  * `Zip::InputStream`
  * `Zip::OutputStream`

Please ensure that your Gemfiles and .gemspecs are suitably restrictive
to avoid an unexpected breakage when 3.0 is released (e.g. ~> 2.3.0).
See https://github.com/rubyzip/rubyzip for details. The Changelog also
lists other enhancements and bugfixes that have been implemented since
version 2.3.0.
Successfully installed rubyzip-2.3.2
Fetching: text-1.3.1.gem (100%)
Successfully installed text-1.3.1
Fetching: tetra-2.0.6.gem (100%)
Successfully installed tetra-2.0.6
6 gems installed

RubyZip is only used in pom_getter.rb:

    # returns a pom embedded in a jar file
    def get_pom_from_jar(file)
      log.debug("Attempting unpack of #{file} to find a POM")
      begin
        Zip::File.foreach(file) do |entry|
          if entry.name =~ %r{/pom.xml$}
            log.info("pom.xml found in #{file}##{entry.name}")
            return entry.get_input_stream.read, :found_in_jar
          end
        end
      rescue Zip::Error
        log.warn("#{file} does not seem to be a valid jar archive, skipping")
      rescue TypeError
        log.warn("#{file} seems to be a valid jar archive but is corrupt, skipping")
      end
      nil
    end

Links

• https://github.com/rubyzip/rubyzip/wiki/Updating-to-version-3.x
• https://github.com/rubyzip/rubyzip/blob/master/Changelog.md#300-next