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Class: Kward::ANSI::MarkdownStream

Inherits:
Object
  • Object
show all
Defined in:
lib/kward/terminal/ansi.rb

Overview

String wrapper that strips ANSI escape sequences while preserving visible text operations.

Instance Method Summary collapse

Constructor Details

#initialize(enabled: ANSI.enabled?) ⇒ MarkdownStream

Returns a new instance of MarkdownStream.



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# File 'lib/kward/terminal/ansi.rb', line 186

def initialize(enabled: ANSI.enabled?)
  @enabled = enabled
  @pending = +""
  @in_fence = false
  @line_streaming = false
end

Instance Method Details

#render(delta, final: false) ⇒ Object 



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# File 'lib/kward/terminal/ansi.rb', line 193

def render(delta, final: false)
  @pending << delta.to_s
  rendered = +""
  while (match = @pending.match(/\r\n|\r|\n/))
    line = @pending[0...match.begin(0)]
    @pending = @pending[(match.end(0))..] || +""
    rendered << render_pending_line(line) << "\n"
  end

  if final
    unless @pending.empty?
      rendered << render_pending_line(@pending)
      @pending.clear
    end
  else
    streamable = streamable_inline_prefix
    unless streamable.empty?
      rendered << ANSI.inline_markdown(streamable, enabled: @enabled)
      @pending = @pending[streamable.length..] || +""
      @line_streaming = true
    end
  end

  if final && @in_fence
    rendered << "\n" unless rendered.empty? || rendered.end_with?("\n")
    rendered << ANSI.colorize("└" + "─" * 39, :gray, enabled: @enabled)
    @in_fence = false
  end

  rendered
end