Module: Del::String

Included in:
String
Defined in:
lib/mightystring/string_del.rb

Instance Method Summary collapse

Instance Method Details

#del(in_srch = nil) ⇒ Object

Del : Delete by index/slice



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# File 'lib/mightystring/string_del.rb', line 9

def del(in_srch = nil)
  if not in_srch.nil?
    if in_srch.is_a?(Range) and in_srch.first.is_a?(Integer) and in_srch.last.is_a?(Integer)
      if not self[in_srch.first].nil? and not self[in_srch.last-1].nil?
        if in_srch.first < 0
          in_srch = self[0..in_srch.first-1].length..in_srch.last
        end
        if in_srch.last < 0
          in_srch = in_srch.first..self[0..in_srch.last].length
        end
        if in_srch.first < in_srch.last
          if in_srch.first == 0
            return self[in_srch.last+1..-1]
          elsif in_srch.last == self.length
            return self[0..in_srch.first-1]
          else
            return self[0..in_srch.first-1] + self[in_srch.last+1..-1]
          end
        else
          raise Exception.new("Invalid Range Provided!")
        end
      else
        raise Exception.new("Index Out of Range!")
      end
    elsif in_srch.is_a?(Integer) and -self.length-1 < in_srch and in_srch < self.length
      if in_srch == -1
        in_srch = self.length-1
      elsif in_srch < -1 and not self[in_srch].nil?
        in_srch = self.length + in_srch
      end
      if in_srch == 0
        return self[(in_srch+1)..self.length]
      else
        return self[0..in_srch-1] + self[(in_srch+1)..self.length]
      end
    elsif in_srch.is_a?(String) and not in_srch.empty?
      return self.split(in_srch).join
    end
  end
  return nil
end