Method: TermColor::RuleSet#apply

Defined in:
lib/term_color/rule_set.rb

#apply(text) ⇒ String

Apply styling to string using rule set

Parameters:

  • text (String) —

    Text to parse for stylization

Returns:

  • (String) —

    Text with ANSI style codes injected



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# File 'lib/term_color/rule_set.rb', line 108

def apply(text)
    raw = process_text(text)
    rule_stack = []
    str = ''
    rule_names = @rules.keys
    raw.each do |r|
      if r.is_a?(Symbol)
        # Part is a rule
        dprint "\tRule Symbol #{r}\n"
        if r == :close && rule_stack.length >= 1
          # Rule close with 1+ opened rules
          opened = rule_stack.pop
          opened_after = @rules[opened].codes(Rule::Parts[:after])
          dprint "\t\tClose, opened rule '#{opened}'\n"
          dprint "\t\t\tClosing rule '#{opened}' with After\n"
          dprint 4,"After: #{opened_after.inspect}\n"
          str.concat(opened_after)
          unless rule_stack.length == 0
            rule_stack.each do |outer|
              outer_inside = @rules[outer].codes(Rule::Parts[:inside])
              # Closed rule was nested in another open rule
              dprint 3, "Outer rule '#{outer}' still open. Restoring Inside\n"
              dprint 4, "Inside: #{outer_inside.inspect}\n}"
              str.concat(outer_inside)
            end
          end
            # binding.pry
            # outer = rule_stack[-1]
            # outer_inside = @rules[outer].codes(Rule::Parts[:inside])
            # # Closed rule was nested in another open rule
            # dprint 3, "Outer rule '#{outer}' still open. Restoring Inside\n"
            # dprint 4, "Inside: #{outer_inside.inspect}\n}"
            # str.concat(outer_inside)
            # # binding.pry
          # end
        elsif r == :reset && rule_stack.length == 0
          # no opened outer rules, reset symbol given
          dprint "\t\tReset, no opened rule\n"
          str.concat(@rules[r].codes(Rule::Parts[:after]))
        elsif rule_names.include?(r)
          # New rule to apply
          dprint "\t\tApplying new rule '#{r}'\n"
          dprint 3, "Previous active rule `#{rule_stack[-1]}`\n"
          rule_stack.push r
          str.concat(@rules[r].codes(Rule::Parts[:inside]))
        end
      else
        # Part is text
        str.concat(r)
      end
    end
    str
end