Module: RVM::Shell::Utility

Included in:
AbstractWrapper
Defined in:
lib/rvm/shell/utility.rb

Instance Method Summary collapse

Instance Method Details

#build_cli_call(command, args = nil) ⇒ Object

From a command, will build up a runnable command. If args isn’t provided, it will escape arguments.



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# File 'lib/rvm/shell/utility.rb', line 31

def build_cli_call(command, args = nil)
  "#{command} #{escape_arguments(args)}".strip
end

#escape_argument(s) ⇒ Object

Given a string, converts to the escaped format. This ensures that things such as variables aren’t evaluated into strings and everything else is setup as expected.



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# File 'lib/rvm/shell/utility.rb', line 17

def escape_argument(s)
  return "''" if s.empty?
  s.scan(/('+|[^']+)/).map do |section|
    section = section.first
    if section[0] == ?'
      "\\'" * section.length
    else
      "'#{section}'"
    end
  end.join
end

#escape_arguments(*args) ⇒ Object

Takes an array / number of arguments and converts them to a string useable for passing into a shell call.



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# File 'lib/rvm/shell/utility.rb', line 9

def escape_arguments(*args)
  return '' if args.nil?
  args.flatten.map { |a| escape_argument(a.to_s) }.join(" ")
end