Class: LogBench::App::Renderer::Ansi

Inherits:
Object
  • Object
show all
Includes:
Curses
Defined in:
lib/log_bench/app/renderer/ansi.rb

Instance Method Summary collapse

Constructor Details

#initialize(screen) ⇒ Ansi

Returns a new instance of Ansi.



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# File 'lib/log_bench/app/renderer/ansi.rb', line 9

def initialize(screen)
  self.screen = screen
end

Instance Method Details

#has_ansi_codes?(text) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/log_bench/app/renderer/ansi.rb', line 13

def has_ansi_codes?(text)
  text.match?(/\e\[[0-9;]*m/)
end

#parse_and_render(text, win) ⇒ Object 



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# File 'lib/log_bench/app/renderer/ansi.rb', line 17

def parse_and_render(text, win)
  parts = text.split(/(\e\[[0-9;]*m)/)
  current_color = nil

  parts.each do |part|
    if part =~ /\e\[([0-9;]*)m/
      # ANSI escape code
      codes = $1.split(";").map(&:to_i)
      current_color = ansi_to_curses_color(codes)
    elsif current_color && !part.empty?
      # Text content
      win.attron(current_color) { win.addstr(part) }
    elsif !part.empty?
      win.addstr(part)
    end
  end
end

#wrap_ansi_text(text, max_width) ⇒ Object 



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# File 'lib/log_bench/app/renderer/ansi.rb', line 35

def wrap_ansi_text(text, max_width)
  clean_text = text.gsub(/\e\[[0-9;]*m/, "")

  if clean_text.length <= max_width
    [text]
  else
    chunks = []
    remaining = text
    active_colors = []

    # Extract initial color state
    text.scan(/\e\[[0-9;]*m/) do |ansi_code|
      if /\e\[0m/.match?(ansi_code)
        active_colors.clear
      else
        active_colors << ansi_code
      end
    end

    while remaining.length > 0
      clean_remaining = remaining.gsub(/\e\[[0-9;]*m/, "")

      if clean_remaining.length <= max_width
        # Last chunk
        chunks << if active_colors.any? && !remaining.start_with?(*active_colors)
          active_colors.join("") + remaining
        else
          remaining
        end
        break
      else
        # Find break point and preserve color state
        break_point = max_width
        original_pos = 0
        clean_pos = 0
        chunk_colors = active_colors.dup

        remaining.each_char.with_index do |char, idx|
          if /^\e\[[0-9;]*m/.match?(remaining[idx..])
            # Found ANSI sequence
            ansi_match = remaining[idx..].match(/^(\e\[[0-9;]*m)/)
            ansi_code = ansi_match[1]

            if /\e\[0m/.match?(ansi_code)
              chunk_colors.clear
              active_colors.clear
            else
              chunk_colors << ansi_code unless chunk_colors.include?(ansi_code)
              active_colors << ansi_code unless active_colors.include?(ansi_code)
            end

            original_pos += ansi_code.length
            idx + ansi_code.length - 1
          else
            clean_pos += 1
            original_pos += 1

            if clean_pos >= break_point
              break
            end
          end
        end

        chunk_text = remaining[0...original_pos]
        chunks << if active_colors.any? && !chunk_text.start_with?(*active_colors)
          active_colors.join("") + chunk_text
        else
          chunk_text
        end

        remaining = remaining[original_pos..]
      end
    end

    chunks
  end
end

#wrap_plain_text(text, max_width) ⇒ Object 



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# File 'lib/log_bench/app/renderer/ansi.rb', line 113

def wrap_plain_text(text, max_width)
  # Simple text wrapping for plain text
  if text.length <= max_width
    [text]
  else
    chunks = []
    remaining = text

    while remaining.length > 0
      if remaining.length <= max_width
        chunks << remaining
        break
      else
        # Find a good break point (try to break on spaces)
        break_point = max_width
        if remaining[0...max_width].include?(" ")
          # Find the last space within the limit
          break_point = remaining[0...max_width].rindex(" ") || max_width
        end

        chunks << remaining[0...break_point]
        remaining = remaining[break_point..].lstrip
      end
    end

    chunks
  end
end