Class: CliSwitch

Inherits:
Object
  • Object
show all
Defined in:
lib/cliswitch.rb

Overview

File : cliswitch.rb Authors : ccmywish <ccmywish@qq.com> Created on : <2022-04-13> Last modified : <2022-04-14>

cliswitch:

Parse switch options

Defined Under Namespace

Classes: Option

Constant Summary collapse

VERSION = 
"0.3.0"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CliSwitch

Returns a new instance of CliSwitch.



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# File 'lib/cliswitch.rb', line 62

def initialize
  @options_config = self.class.class_options_config
end

Instance Attribute Details

#args ⇒ Object

instance attribute



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# File 'lib/cliswitch.rb', line 57

def args
  @args
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/cliswitch.rb', line 58

def options
  @options
end

#options_config ⇒ Object

Returns the value of attribute options_config.



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# File 'lib/cliswitch.rb', line 59

def options_config
  @options_config
end

Class Method Details

.class_options_config ⇒ Object 



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# File 'lib/cliswitch.rb', line 155

def self.class_options_config
  @class_options_config
end

.option ⇒ Object

MyClass < CliSwitch

  option ...
end



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# File 'lib/cliswitch.rb', line 149

def self.option(...)
  # A class instance variable for every subclass
  @class_options_config ||= []
  @class_options_config << Option.new(...)
end

Instance Method Details

#parse(arr) ⇒ Object 



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# File 'lib/cliswitch.rb', line 67

def parse(arr)

  @args    = []
  @options = []
  new_arr  = []
  
  #
  # Clear hyphen switch's stick effect
  #
  arr.each_with_index do 
    if _1 =~ /^-\w.*/
      if _1.size > 2
        new_arr << _1[0,2] <<  _1[2..]
        next
      end
    end
    new_arr << _1
  end

  arr = new_arr
  
  #
  # Parse the result to @options
  #
  arr.each_with_index do 

    # hyphen switch match
    if _1 =~ /^-\w$/  or  _1 =~ /^--\w.+$/
      if op = search_in_options_config(_1)

        # Whether receive the next arg
        case op.arg_required
        when 'noarg' 
          # do nothing
        when 'required' 
          op.next_arg = arr[_2 + 1]
          arr.delete_at(_2+1)
        when 'optional'
          next_arg = arr[_2 + 1]
          if !next_arg.nil?
            if next_arg.start_with?('-') && search_in_options_config(next_arg)
              # do nothing
            else 
              op.next_arg = next_arg
              arr.delete_at(_2+1)
            end
          end
        when 'noarg'
          # do nothing
        end
        @options << op
      else
        puts "Error: Unknown option: #{_1}"
      end
      next
    end


    # join args
    @args << _1
  end


  # Not validate by default, because it's not necessary
  # validate_mandatory_options()

  # Debug
  # puts "=> args:"
  # p @args
  # puts "=> options:"
  # p @options
  #
  return @args, @options

end