50 lines
1.1 KiB
Ruby
50 lines
1.1 KiB
Ruby
module Imbecile
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module CLI
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USAGE = <<EOF
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Usage: #{$0} [options] <input-file>
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Options:
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--version Show program version and exit
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-h, --help Show this usage and exit
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EOF
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class << self
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def run(args)
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input_file = nil
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args.each do |arg|
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case arg
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when "--version"
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puts "imbecile v#{VERSION}"
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return 0
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when "-h", "--help"
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puts USAGE
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return 0
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when /^-/
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$stderr.puts "Error: unknown option #{arg}"
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return 1
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else
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if input_file
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$stderr.puts "Error: only one input file supported"
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return 1
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else
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input_file = arg
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end
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end
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end
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if input_file.nil?
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$stderr.puts "Error: must specify input file"
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return 1
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end
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unless File.readable?(input_file)
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$stderr.puts "Error: cannot read #{input_file}"
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return 2
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end
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Imbecile.run(input_file)
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end
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end
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end
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end
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