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Current File : //opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/package.rb

module Puppet::Util::Package
  def versioncmp(version_a, version_b)
    vre = /[-.]|\d+|[^-.\d]+/
    ax = version_a.scan(vre)
    bx = version_b.scan(vre)

    while (ax.length>0 && bx.length>0)
      a = ax.shift
      b = bx.shift

      if( a == b )                 then next
      elsif (a == '-' && b == '-') then next
      elsif (a == '-')             then return -1
      elsif (b == '-')             then return 1
      elsif (a == '.' && b == '.') then next
      elsif (a == '.' )            then return -1
      elsif (b == '.' )            then return 1
      elsif (a =~ /^\d+$/ && b =~ /^\d+$/) then
        if( a =~ /^0/ or b =~ /^0/ ) then
          return a.to_s.upcase <=> b.to_s.upcase
        end
        return a.to_i <=> b.to_i
      else
        return a.upcase <=> b.upcase
      end
    end
    version_a <=> version_b;
  end

  module_function :versioncmp
end

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