Receiving error Local_Test_bak.rb:52: syntax error, unexpected keyword_if, expecting ']'

Trying to modify the file "/root/chef-repo/limits.conf" and include/update the following values:

Modify:

cloudusr hard core 10 ----> cloudusr hard core 20 cloudusr soft core 10 ----> cloudusr soft core 20

Add:

cloudusr soft data unlimited cloudusr hard stack 10240 cloudusr soft stack 10240

The Current content of the file: /root/chef-repo/limits.conf is:

cloudusr hard core 10 cloudusr hard fsize unlimited cloudusr hard nofile 1024 cloudusr hard nproc 4096 cloudusr hard rss unlimited cloudusr hard cpu unlimited cloudusr soft core 10 cloudusr soft fsize unlimited cloudusr soft nofile 5120 cloudusr soft nproc 6144 cloudusr soft rss unlimited cloudusr soft cpu unlimited

Below is the code snippet:

core = "20"
Utype[] = ""
Utype[core] = "both"
data = "unlimited"
Utype[data] = "soft"
stack = "10240"
Utype[stack] = "both"
result = ""
user = "cloudusr"

text = File.read("/root/chef-repo/90-nproc.conf")
new_contents = text.gsub!(%r{(?<!#)^}, "#")
puts new_contents
File.open("/root/chef-repo/90-nproc.conf", "w") {|file| file.puts new_contents }

params = "core#data#stack"

    enter code here

params.split('#').each do |param|
        puts "Parameter value to change: #{param}"
        puts "Limit for #{param} to change #{Utype[#{param}]}"
        if "#{Utype["#{param}"]}" == "both"
                cmd = Mixlib::ShellOut.new("cat '/root/chef-repo/limits.conf' | grep #{user} | grep #{param} | grep -c 'hard'
")
                cmd.run_command
                hval = cmd.stdout
                cmd = Mixlib::ShellOut.new("cat '/root/chef-repo/limits.conf' | grep #{user} | grep #{param} | grep -c 'soft'
")
                cmd.run_command
                sval = cmd.stdout
                if hval.to_i == 1 || sval.to_i == 1
                        File.readlines("/root/chef-repo/limits.conf").each do |line|
                                if line.include?("#{user}")
                                        if line.include?("#{param}")
                                                val = line.split(' ').last
                                                line1 = line.gsub("#{val}", "#{"#{param}"}")
                                                sed = Chef::Util::FileEdit.new("/root/chef-repo/limits.conf")
                                                sed.search_file_replace(line, line1)
                                                sed.write_file
                                        end
                                end
                        end
                end
                if hval.to_i < 1
                        File.open("/root/chef-repo/limits.conf", "a+") do |file|
                                file << "#{user} hard #{param} #{"#{param}"}"
                        end
                end
                if sval.to_i < 1
                        File.open("/root/chef-repo/limits.conf", "a+") do |file|
                                 file << "#{user} soft #{param} #{"#{param}"}"
                        end
                end
        end
        if "#{Utype["#{param}"]}" == "soft"
                cmd = Mixlib::ShellOut.new("cat '/root/chef-repo/limits.conf' | grep #{user} | grep #{param} | grep -c 'soft'
")
                cmd.run_command
                sval = cmd.stdout
                if sval.to_i == 1
                        File.readlines("/root/chef-repo/limits.conf").each do |line|
                                if line.include?("#{user}")
                                        if line.include?("#{param}")
                                                val = line.split(' ').last
                                                line1 = line.gsub("#{val}", "#{"#{param}"}")
                                                sed = Chef::Util::FileEdit.new("/root/chef-repo/limits.conf")
                                                sed.search_file_replace(line, line1)
                                                sed.write_file
                                        end
                                end
                        end
                else
                        File.open("/root/chef-repo/limits.conf", "a+") do |file|
                                file << "#{user} soft #{param} #{"#{param}"}"
                        end
                end
        end
        if "#{Utype["#{param}"]}" == "hard"
                cmd = Mixlib::ShellOut.new("cat '/root/chef-repo/limits.conf' | grep #{user} | grep #{param} | grep -c 'hard'
")
                cmd.run_command
                hval = cmd.stdout
                if hval.to_i == 1
                        File.readlines("/root/chef-repo/limits.conf").each do |line|
                                if line.include?("#{user}")
                                        if line.include?("#{param}")
                                                val = line.split(' ').last
                                                line1 = line.gsub("#{val}", "#{"#{param}"}")
                                                sed = Chef::Util::FileEdit.new("/root/chef-repo/limits.conf")
                                                sed.search_file_replace(line, line1)
                                                sed.write_file
                                        end
                                end
                        end
                else
                        File.open("/root/chef-repo/limits.conf", "a+") do |file|
                                file << "#{user} hard #{param} #{"#{param}"}"
                        end
                end
        end
        if "#{Utype["#{param}"]}" == "ignore"
                next
        end
end