CODEWITHSUNDEEP
ruby
Sur123
Sur123

Reputation: 35

passing command line args in ruby and runtime args through gets

I wrote a code in ruby which basically takes 3 commandline args followed by userinput from the keyboard. The problem is when i am executing the code without command line, it is able to read userinput but with command line it is throwing error `gets': No such file or directory - 3024 (Errno::ENOENT) Dont understand why

class Matching
  attr_reader :sys_count
  def initialize()
    @sys_count = gets
    throw "Bad count" unless @sys_count.to_i > 0
  end
  def get_match
    count = @sys_count
    return nil unless count
    ret = count

    count.to_i.times do
      ret += gets
    end
    ((count.to_i * (count.to_i - 1))/2).times do
      while true do
        line = gets
        ret += line
        break if line == "\n"
      end
    end

    ret
  end

  def packet
    str = get_match
    return nil unless str
    "matched 0\njava\n" + str
  end
end
CONN=ARGV[0]
CONFIG=ARGV[1]
OUT_BASE=ARGV[2]
obj=Matching.new()
out=obj.packet
print out

Is there any workaround to make it work ~

Upvotes: 0

Views: 57

Answers (1)

Amit Joki
Amit Joki

Reputation: 59232

You need to specifically state that you need the input from the input device, as opposed to command line arguments ARGV, and since gets is generic, you've to be specific in this case to avoid confusions or misinterpretation.

So, replace all gets with $stdin.gets or STDIN.gets, which gets the input from the standard input.

Upvotes: 1

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