OptionParser to parse arguments form file instead of command line

I am using Ruby to execute a code that takes command line arguments. now i trying to use the same program with differnt options so i am putting the options in a file and i want the program to read each line interpret the options and execute the program accordingly.

but i get this error. "C:/Ruby193/lib/ruby/1.9.1/optparse.rb:1348:in block in parse_in_order': undefined methodshift' for "--c execue --query unix --Servername abc123":String (NoMethodError)"

i understand that its reading the file and treating the line as string. but wondering if there is a way to overcome this shift error and treat the line as if it was entered in command prompt. or any better solution.

here is my code.

require 'optparse'
require 'micro-optparse'
# --command execue --query unix command --Servername abc123
f =File.open("list_of_commands.txt", "r")
f.each_line { |line| 
line= line.chomp
#line = "--c execue --query unix --Servername abc123"
#line = eval("\"#{line}\"")
puts line

 options = {}
OptionParser.new do |opts|

  opts.on("-c", "--command result,execue,chart,scpfile", String, "Single command to execute ") do |c|
    options[:comd] = c
  end

  opts.on("-q", "--query remote command, unix command", String, "performs the command on local or remote machine") do |q|
    options[:query] = q
  end

  opts.on("-s", "--servername CHSXEDWDC002 ", String, "server name to execute the command") do |v|
    options[:hname] = v
  end

    opts.on_tail('-h', '--help', 'Show this message') do
    puts opts
     exit
   end

 end.parse!(line)
 p options
 }

the contents of the file are below --c execue --query unix --Servername abc123

i also tried to use micro-optparse but facing same error. any workaround ?

Update: as per suggestion from "@mu is too short" i tried below options. end.parse!("#{Shellwords.shellsplit(line)}") and/or end.parse!(Shellwords.shellsplit(line)). but none of them worked.

i also tried to split the line as array using "line = line.split("\t")" and then end.parse!(line). out put as --c execue --query unix --Servername abc123

but now i get error as block in : invalid option --c execute

Update:#2 looking at the error, the issue is with the wrong parameter(-c. but thanks to user "@mu is too short" for suggesting to use Array.

Update: 3 passing the array only worked for short form of the arguments such as -c but when long form was supplied it failed with invalid argument erorr.

i dont see much documentation on the optparse. i even tried micro-parse but it requres default valuves and its not an option for me :(

The parse! method wants an array as its argument, not a string. You'll probable want to use Shellwords.shellsplit rather than String#split (or similar hand-rolled method) to convert your line to an array just in case you have to deal with quoting and whatnot. Something like this:

OptionParser.new do |opts|
  #...
end.parse!(Shellwords.shellsplit(line))