Class: Redcarpet::Render::Console

Inherits:
Base
  • Object
show all
Includes:
CLIMarkdown::Colors, CLIMarkdown::Theme
Defined in:
lib/mdless/console.rb

Constant Summary collapse

@@listitemid = 
0
@@listid = 
0
@@elementid = 
0
@@footnotes = 
[]
[]
[]

Constants included from CLIMarkdown::Theme

CLIMarkdown::Theme::THEME_DEFAULTS

Constants included from CLIMarkdown::Colors

CLIMarkdown::Colors::COLORS, CLIMarkdown::Colors::ESCAPE_REGEX

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from CLIMarkdown::Theme

#load_theme, #load_theme_file

Methods included from CLIMarkdown::Colors

#blackout, #c, #last_color_code, #remove_pre_post, #size_clean, #uncolor, #uncolor!, #unpad, #wrap

Instance Attribute Details

#file=(value) ⇒ Object (writeonly)

Sets the attribute file

Parameters:

  • value —

    the value to set the attribute file to.



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# File 'lib/mdless/console.rb', line 8

def file=(value)
  @file = value
end

#headers ⇒ Object

Returns the value of attribute headers.



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# File 'lib/mdless/console.rb', line 7

def headers
  @headers
end

Instance Method Details



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# File 'lib/mdless/console.rb', line 327

def autolink(link, _)
  [
    pre_element,
    color('link brackets'),
    '<',
    color('link url'),
    link,
    color('link brackets'),
    '>',
    xc,
    post_element
  ].join('')
end

#block_code(code, language) ⇒ Object 



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# File 'lib/mdless/console.rb', line 197

def block_code(code, language)
  "\n\n#{hilite_code(code, language)}#{xc}\n\n"
end

#block_html(raw_html) ⇒ Object 



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# File 'lib/mdless/console.rb', line 216

def block_html(raw_html)
  "#{color('html color')}#{color_tags(raw_html)}#{xc}"
end

#block_quote(quote) ⇒ Object 



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# File 'lib/mdless/console.rb', line 201

def block_quote(quote)
  ret = "\n\n"
  quote.strip.wrap(MDLess.cols, color('blockquote color')).split(/\n/).each do |line|
    ret += [
      color('blockquote marker color'),
      MDLess.theme['blockquote']['marker']['character'],
      color('blockquote color'),
      ' ',
      line,
      "\n"
    ].join('')
  end
  "#{ret}\n\n"
end

#code_bg(input, width) ⇒ Object 



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# File 'lib/mdless/console.rb', line 61

def code_bg(input, width)
  input.split(/\n/).map do |line|
    tail = line.uncolor.length < width ? "\u00A0" * (width - line.uncolor.length) : ''
    "#{x}#{line}#{tail}#{x}"
  end.join("\n")
end

#codespan(code) ⇒ Object 



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# File 'lib/mdless/console.rb', line 341

def codespan(code)
  out = [
    pre_element,
    color('code_span marker'),
    MDLess.theme['code_span']['character'],
    color('code_span color'),
    code,
    color('code_span marker'),
    MDLess.theme['code_span']['character'],
    xc,
    post_element
  ].join
end

#color(key) ⇒ Object 



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# File 'lib/mdless/console.rb', line 170

def color(key)
  val = nil
  keys = key.split(/[ ,>]/)

  if MDLess.theme.key?(keys[0])
    val = MDLess.theme[keys.shift]
  else
    MDLess.log.error("Invalid theme key~: #{key}") unless keys[0] =~ /^text/
    return c([:reset])
  end
  keys.each do |k|
    if val.key?(k)
      val = val[k]
    else
      MDLess.log.error("Invalid theme key*: #{k}")
      return c([:reset])
    end
  end
  if val.is_a? String
    val = "x #{val}"
    res = val.split(/ /).map(&:to_sym)
    c(res)
  else
    c([:reset])
  end
end

#color_dd_def(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 912

def color_dd_def(input)
  input.gsub(/(?<=\n|\A)(?::)\s+(.*)/) do
    m = Regexp.last_match
    [
      color('dd marker'),
      ': ',
      color('dd color'),
      m[1],
      xc
    ].join
  end
end

#color_footnote_def(idx) ⇒ Object 



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# File 'lib/mdless/console.rb', line 545

def color_footnote_def(idx)
  text = @@footnotes[idx]
  [
    color('footnote brackets'),
    '[',
    color('footnote caret'),
    '^',
    color('footnote title'),
    idx,
    color('footnote brackets'),
    ']:',
    color('footnote note'),
    ' ',
    text.uncolor.strip,
    xc,
    "\n"
  ].join('')
end

#color_image_reference(idx, content) ⇒ Object 



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# File 'lib/mdless/console.rb', line 490

def color_image_reference(idx, content)
  [
    pre_element,
    color('image brackets'),
    '[',
    color('image title'),
    content,
    color('image brackets'),
    '][',
    color('link url'),
    idx,
    color('image brackets'),
    ']',
    xc,
    post_element
  ].join
end

#color_image_tag(link, title, alt_text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 424

def color_image_tag(link, title, alt_text)
  image = [
    color('image brackets'),
    '[',
    color('image title'),
    alt_text,
    color('image brackets'),
    '](',
    color('image url'),
    link,
    title.nil? ? '' : %( "#{title}"),
    color('image brackets'),
    ')'
  ].join

  @@links << {
    link: image,
    url: link,
    title: title,
    content: alt_text,
    image: true
  }

  [
    color('image bang'),
    '!',
    image,
    xc
  ].join
end

#color_link(link, title, content) ⇒ Object 



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# File 'lib/mdless/console.rb', line 405

def color_link(link, title, content)
  [
    pre_element,
    color('link brackets'),
    '[',
    color('link text'),
    content,
    color('link brackets'),
    '](',
    color('link url'),
    link,
    title.nil? ? '' : %( "#{title}"),
    color('link brackets'),
    ')',
    xc,
    post_element
  ].join
end

#color_link_reference(_link, idx, content) ⇒ Object 



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# File 'lib/mdless/console.rb', line 455

def color_link_reference(_link, idx, content)
  [
    pre_element,
    color('link brackets'),
    '[',
    color('link text'),
    content,
    color('link brackets'),
    '][',
    color('link url'),
    idx,
    color('link brackets'),
    ']',
    xc,
    post_element
  ].join
end

#color_links(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 925

def color_links(input)
  input.gsub(/(?mi)(?<!\\e)\[(?<text>[^\[]+)\]\((?<url>\S+)(?: +"(?<title>.*?)")? *\)/) do
    m = Regexp.last_match
    color_link(m['url'].uncolor, m['title']&.uncolor, m['text'].uncolor)
  end
end

#color_list_item(indent, content, type, counter) ⇒ Object 



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# File 'lib/mdless/console.rb', line 616

def color_list_item(indent, content, type, counter)
  out = case type
        when :unordered
          [
            ' ' * indent,
            color('list bullet'),
            MDLess.theme['list']['ul_char'].strip,
            ' ',
            color('list color'),
            indent_lines(content).strip,
            xc
          ].join
        when :ordered
          [
            ' ' * indent,
            color('list number'),
            "#{counter}. ",
            color('list color'),
            indent_lines(content).strip,
            xc
          ].join
        end
  if MDLess.options[:at_tags] || MDLess.options[:taskpaper]
    color_tags(out)
  else
    out
  end
end

#color_meta(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 743

def color_meta(text)
  input = text.dup
  input.clean_empty_lines!
  MDLess.meta = {}
  first_line = input.split("\n").first
  if first_line =~ /(?i-m)^---[ \t]*?$/
    MDLess.log.info('Found YAML')
    # YAML
    in_yaml = true
    input.sub!(/(?i-m)^---[ \t]*\n(?<content>(?:[\s\S]*?))\n[-.]{3}[ \t]*\n/m) do
      m = Regexp.last_match
      MDLess.log.info('Processing YAML header')
      begin
        MDLess.meta = YAML.unsafe_load(m['content']).each_with_object({}) { |(k, v), h| h[k.downcase] = v }
      rescue Psych::DisallowedClass => e
        @log.error('Error reading YAML header')
        @log.error(e)
        MDLess.meta = {}
      rescue StandardError => e
        @log.error("StandardError: #{e}")
      end

      lines = m[0].split(/\n/)
      longest = lines.longest_element.length
      longest = longest < MDLess.cols ? longest + 1 : MDLess.cols
      lines.map do |line|
        if line =~ /^[-.]{3}\s*$/
          line = "#{color('metadata marker')}#{'%' * longest}"
        else
          line.sub!(/^(.*?:)[ \t]+(\S)/, '\1 \2')
          line = "#{color('metadata marker')}% #{color('metadata color')}#{line}"
        end
        if (longest - line.uncolor.strip.length).positive?
          line += "\u00A0" * (longest - line.uncolor.strip.length)
        end
        line + xc
      end.join("\n") + "#{xc}\n"
    end
  end

  if !in_yaml && first_line =~ /(?i-m)^[\w ]+:\s+\S+/
    MDLess.log.info('Found MMD Headers')
    input.sub!(/(?i-m)^([\S ]+:[\s\S]*?)+(?=\n *\n)/) do |mmd|
      lines = mmd.split(/\n/)
      return mmd if lines.count > 20

      longest = lines.inject { |memo, word| memo.length > word.length ? memo : word }.length
      longest = longest < MDLess.cols ? longest + 1 : MDLess.cols

      lines.map do |line|
        line.sub!(/^(.*?:)[ \t]+(\S)/, '\1 \2')
        parts = line.match(/^[ \t]*(\S.*?):[ \t]+(\S.*?)$/)
        if parts
          key = parts[1].gsub(/[^a-z0-9\-_]/i, '')
          value = parts[2].strip
          MDLess.meta[key] = value
        end
        line = "#{color('metadata marker')}%#{color('metadata color')}#{line}"
        if (longest - line.uncolor.strip.length).positive?
          line += "\u00A0" * (longest - line.uncolor.strip.length)
        end
        line + xc
      end.join("\n") + "#{xc}\n"
    end
  end

  input
end

#color_reference_link(link, title, content, image: false) ⇒ Object 



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# File 'lib/mdless/console.rb', line 473

def color_reference_link(link, title, content, image: false)
  [
    color('link brackets'),
    '[',
    color('link text'),
    content,
    color('link brackets'),
    ']:',
    color('text'),
    ' ',
    image ? color('image url') : color('link url'),
    link,
    title.nil? ? '' : %( "#{title}"),
    xc
  ].join
end

#color_table(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 34

def color_table(input)
  first = true
  input.split(/\n/).map do |line|
    if first
      if line =~ /^\+-+/
        line.gsub!(/^/, color('table border'))
      else
        first = false
        line.gsub!(/\|/, "#{color('table border')}|#{color('table header')}")
      end
    elsif line.strip =~ /^[|:\- +]+$/
      line.gsub!(/^(.*)$/, "#{color('table border')}\\1#{color('table color')}")
      line.gsub!(/([:\-+]+)/, "#{color('table divider')}\\1#{color('table border')}")
    else
      line.gsub!(/\|/, "#{color('table border')}|#{color('table color')}")
    end
  end.join("\n")
end

#color_tags(html) ⇒ Object 



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# File 'lib/mdless/console.rb', line 519

def color_tags(html)
  html.gsub(%r{((?!<)</?\w+( [^>]+)?>)}, "#{color('html brackets')}\\1#{xc}")
end

#double_emphasis(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 355

def double_emphasis(text)
  [
    pre_element,
    color('emphasis bold'),
    MDLess.theme['emphasis']['bold_character'],
    text,
    MDLess.theme['emphasis']['bold_character'],
    xc,
    post_element
  ].join
end

#emphasis(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 367

def emphasis(text)
  [
    pre_element,
    color('emphasis italic'),
    MDLess.theme['emphasis']['italic_character'],
    text,
    MDLess.theme['emphasis']['italic_character'],
    xc,
    post_element
  ].join
end

#exec_available(cli) ⇒ Object 



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# File 'lib/mdless/console.rb', line 53

def exec_available(cli)
  if File.exist?(File.expand_path(cli))
    File.executable?(File.expand_path(cli))
  else
    TTY::Which.exist?(cli)
  end
end

#fix_colors(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 985

def fix_colors(input)
  input.gsub(/<<pre(?<id>\d+)>>(?<content>.*?)<<post\k<id>>>/m) do
    m = Regexp.last_match
    pre = m.pre_match.gsub(/<<pre(?<id>\d+)>>.*?<<post\k<id>>>/m, '')
    last_color = pre.last_color_code

    "#{fix_colors(m['content'])}#{last_color}"
  end.gsub(/<<(pre|post)\d+>>/, '')
end

#fix_equations(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 1069

def fix_equations(input)
  input.gsub(/((\\\\\[|\$\$)(.*?)(\\\\\]|\$\$)|(\\\\\(|\$)(.*?)(\\\\\)|\$))/) do
    m = Regexp.last_match
    if m[2]
      brackets = [m[2], m[4]]
      equat = m[3]
    else
      brackets = [m[5], m[7]]
      equat = m[6]
    end
    [
      pre_element,
      color('math brackets'),
      brackets[0],
      xc,
      color('math equation'),
      equat,
      color('math brackets'),
      brackets[1],
      xc,
      post_element
    ].join
  end
end

#fix_image_attributes(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 837

def fix_image_attributes(input)
  input.gsub(/^( {0,3}\[[^^*>].*?\]: *\S+) +([^"].*?)$/, '\1')
end

#fix_items(content, last_indent = 0, levels = [0]) ⇒ Object 



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# File 'lib/mdless/console.rb', line 683

def fix_items(content, last_indent = 0, levels = [0])
  content.gsub(%r{^(?<indent> *)<<listitem(?<id>\d+)-(?<type>(?:un)?ordered)>>(?<content>.*?)<</listitem\k<id>>>}m) do
    m = Regexp.last_match

    indent = m['indent'].length
    if m['type'].to_sym == :ordered
      if indent == last_indent
        levels[indent] ||= 0
        levels[indent] += 1
      elsif indent < last_indent
        levels[last_indent] = 0
        levels[indent] += 1
        last_indent = indent
      else
        levels[indent] = 1
        last_indent = indent
      end
    end

    content = m['content'] =~ /<<listitem/ ? fix_items(m['content'], indent, levels) : m['content']
    color_list_item(indent, uncolor_grafs(content), m['type'].to_sym, levels[indent])
  end
end

#fix_list_items(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 707

def fix_list_items(input)
  input.gsub(%r{<<main(?<id>\d+)>>(?<content>.*?)<</main\k<id>>>}m) do
    m = Regexp.last_match
    fix_items(m['content'])
  end
end

#fix_list_spacing(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 651

def fix_list_spacing(input)
  input.gsub(/( *\n)+( *)<<listitem/, "\n\\2<<listitem").gsub(/( *\n){2,}/, "\n\n")
end

#fix_lists(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 645

def fix_lists(input)
  input = nest_lists(input)
  input = fix_list_spacing(input)
  fix_list_items(input)
end

#footnote_def(text, idx) ⇒ Object 



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# File 'lib/mdless/console.rb', line 564

def footnote_def(text, idx)
  @@footnotes[idx] = text
end

#footnote_ref(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 568

def footnote_ref(text)
  [
    pre_element,
    color('footnote title'),
    "[^#{text}]",
    xc,
    post_element
  ].join('')
end

#footnotes(_text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 535

def footnotes(_text)
  # [
  #   color('footnote note'),
  #   text,
  #   "\n",
  #   xc,
  # ].join('')
  nil
end

#get_headers(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 714

def get_headers(input)
  unless @headers && !@headers.empty?
    @headers = []
    headers = input.scan(/^((?!#!)(\#{1,6})\s*([^#]+?)(?: #+)?\s*|(\S.+)\n([=-]+))$/i)

    headers.each do |h|
      hlevel = 6
      title = nil
      if h[4] =~ /=+/
        hlevel = 1
        title = h[3]
      elsif h[4] =~ /-+/
        hlevel = 2
        title = h[3]
      else
        hlevel = h[1].length
        title = h[2]
      end
      @headers << [
        '#' * hlevel,
        title,
        h[0]
      ]
    end
  end

  @headers
end

#header(text, header_level) ⇒ Object 



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# File 'lib/mdless/console.rb', line 220

def header(text, header_level)
  pad = ''
  ansi = ''
  text.clean_header_ids!
  uncolored = text.uncolor.gsub(/<<(pre|post)\d+>>/, '')
  uncolored.sub!(/\[(.*?)\]\(.*?\)/, '[\1][xxx]') if MDLess.options[:links] != :inline

  text_length = uncolored.length
  case header_level
  when 1
    ansi = color('h1 color')
    pad = color('h1 pad')
    char = MDLess.theme['h1']['pad_char'] || '='
    pad += text_length + 2 > MDLess.cols ? char * text_length : char * (MDLess.cols - (text_length + 1))
  when 2
    ansi = color('h2 color')
    pad = color('h2 pad')
    char = MDLess.theme['h2']['pad_char'] || '-'
    pad += text_length + 2 > MDLess.cols ? char * text_length : char * (MDLess.cols - (text_length + 1))
  when 3
    ansi = color('h3 color')
  when 4
    ansi = color('h4 color')
  when 5
    ansi = color('h5 color')
  else
    ansi = color('h6 color')
  end

  # If we're in iTerm and not paginating, add
  # iTerm Marks for navigation on h1-3
  if header_level < 4 &&
     ENV['TERM_PROGRAM'] =~ /^iterm/i &&
     MDLess.options[:pager] == false
    ansi = "\e]1337;SetMark\a#{ansi}"
  end

  "\n\n#{xc}#{ansi}#{text} #{pad}#{xc}\n\n"
end

#highlight(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 393

def highlight(text)
  "#{pre_element}#{color('highlight')}#{text}#{xc}#{post_element}"
end

#highlight_tags(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 1094

def highlight_tags(input)
  tag_color = color('at_tags tag')
  value_color = color('at_tags value')
  input.gsub(/(?<pre>\s|m)(?<tag>@[^ \]:;.?!,("'\n]+)(?:(?<lparen>\()(?<value>.*?)(?<rparen>\)))?/) do
    m = Regexp.last_match
    last_color = m.pre_match.last_color_code
    [
      m['pre'],
      tag_color,
      m['tag'],
      m['lparen'],
      value_color,
      m['value'],
      tag_color,
      m['rparen'],
      xc,
      last_color
    ].join
  end
end

#highlight_wiki_links(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 1115

def highlight_wiki_links(input)
  input.gsub(/\[\[(.*?)\]\]/) do
    content = Regexp.last_match(1)
    [
      pre_element,
      color('link brackets'),
      '[[',
      color('link text'),
      content,
      color('link brackets'),
      ']]',
      xc,
      post_element
    ].join
  end
end

#hilite_code(code_block, language) ⇒ Object 



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# File 'lib/mdless/console.rb', line 68

def hilite_code(code_block, language)
  longest_line = code_block.uncolor.split(/\n/).longest_element.length + 4
  longest_line = longest_line > MDLess.cols ? MDLess.cols : longest_line

  # if MDLess.options[:syntax_higlight]
  #   formatter = Rouge::Formatters::Terminal256
  #   lexer = if language
  #             Object.const_get("Rouge::Lexers::#{language.capitalize}") rescue Rouge::Lexer.guess(source: code_block)
  #           else
  #             Rouge::Lexer.guess(source: code_block)
  #           end
  #   hilite = formatter.format(lexer.lex(code_block))
  #   hilite = xc + hilite.split(/\n/).map do |l|
  #     [
  #       color('code_block marker'),
  #       MDLess.theme['code_block']['character'],
  #       "#{color('code_block bg')}#{l.rstrip}#{xc}"
  #     ].join
  #   end.join("\n").blackout(MDLess.theme['code_block']['bg']) + "#{xc}\n"
  # else
  #   hilite = code_block.split(/\n/).map do |line|
  #     [
  #       color('code_block marker'),
  #       MDLess.theme['code_block']['character'],
  #       color('code_block color'),
  #       line,
  #       xc
  #     ].join
  #   end.join("\n").blackout(MDLess.theme['code_block']['bg']) + "#{xc}\n"
  # end

  if MDLess.options[:syntax_higlight] && !exec_available('pygmentize')
    MDLess.log.error('Syntax highlighting requested by pygmentize is not available')
    MDLess.options[:syntax_higlight] = false
  end

  if MDLess.options[:syntax_higlight]
    pyg = TTY::Which.which('pygmentize')
    lexer = language&.valid_lexer? ? "-l #{language}" : '-g'
    begin
      pygments_theme = MDLess.options[:pygments_theme] || MDLess.theme['code_block']['pygments_theme']

      unless pygments_theme.valid_pygments_theme?
        MDLess.log.error("Invalid Pygments theme #{pygments_theme}, defaulting to 'default' for highlighting")
        pygments_theme = 'default'
      end

      cmd = [
        "#{pyg} -f terminal256",
        "-O style=#{pygments_theme}",
        lexer,
        '2> /dev/null'
      ].join(' ')
      hilite, s = Open3.capture2(cmd,
                                 stdin_data: code_block)

      if s.success?
        hilite = xc + hilite.split(/\n/).map do |l|
          [
            color('code_block marker'),
            MDLess.theme['code_block']['character'],
            "#{color('code_block bg')}#{l}#{xc}"
          ].join
        end.join("\n").blackout(MDLess.theme['code_block']['bg']) + "#{xc}\n"
      end
    rescue StandardError => e
      MDLess.log.error(e)
      hilite = code_block
    end
  else
    hilite = code_block.split(/\n/).map do |line|
      [
        color('code_block marker'),
        MDLess.theme['code_block']['character'],
        color('code_block color'),
        line,
        xc
      ].join
    end.join("\n").blackout(MDLess.theme['code_block']['bg']) + "#{xc}\n"
  end

  top_border = if language.nil? || language.empty?
                 '-' * longest_line
               else
                 len = (longest_line - 6 - language.length) > 0 ? longest_line - 6 - language.length : 0
                 "--[ #{language} ]#{"-" * len}"
               end
  [
    xc,
    color('code_block border'),
    top_border,
    xc,
    "\n",
    color('code_block color'),
    code_bg(hilite.chomp, longest_line),
    "\n",
    color('code_block border'),
    '-' * longest_line,
    xc
  ].join
end

#hrule ⇒ Object 



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# File 'lib/mdless/console.rb', line 260

def hrule
  "\n\n#{color('hr color')}#{'_' * MDLess.cols}#{xc}\n\n"
end

#image(link, title, alt_text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 397

def image(link, title, alt_text)
  "<<img>>#{link}||#{title}||#{alt_text}<</img>>"
end

#indent_lines(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 605

def indent_lines(input)
  return nil if input.nil?

  lines = input.split(/\n/)
  line1 = lines.shift
  pre = ' '

  body = lines.map { |l| "#{pre}#{l.rstrip}" }.join("\n")
  "#{line1}\n#{body}"
end

#insert_footnotes(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 578

def insert_footnotes(input)
  input.split(/\n/).map do |line|
    notes = line.to_enum(:scan, /\[\^(?<ref>\d+)\]/).map { Regexp.last_match }
    if notes.count.positive?
      footnotes = notes.map { |n| color_footnote_def(n['ref'].to_i) }.join("\n")
      "#{line}\n\n#{footnotes}\n\n\n"
    else
      line
    end
  end.join("\n")
end

#linebreak ⇒ Object 



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# File 'lib/mdless/console.rb', line 401

def linebreak
  "  \n"
end

#link(link, title, content) ⇒ Object 



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# File 'lib/mdless/console.rb', line 508

def link(link, title, content)
  res = color_link(link, title&.strip, content&.strip)
  @@links << {
    link: res,
    url: link,
    title: title,
    content: content
  }
  res
end

#list(contents, list_type) ⇒ Object 



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# File 'lib/mdless/console.rb', line 590

def list(contents, list_type)
  @@listid += 1
  "<<list#{@@listid}-#{list_type}>>#{contents}<</list#{@@listid}>>"
end

#list_item(text, list_type) ⇒ Object 



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# File 'lib/mdless/console.rb', line 595

def list_item(text, list_type)
  @@listitemid += 1
  case list_type
  when :unordered
    "<<listitem#{@@listitemid}-#{list_type}>>#{text.strip}<</listitem#{@@listitemid}>>\n"
  when :ordered
    "<<listitem#{@@listitemid}-#{list_type}>>#{text.strip}<</listitem#{@@listitemid}>>\n"
  end
end

#mmd_metadata_replace(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 826

def mmd_metadata_replace(input)
  input.gsub(/\[%(.*?)\]/) do |m|
    key = Regexp.last_match(1)
    if MDLess.meta.key?(key)
      MDLess.meta[key]
    else
      m
    end
  end
end

#mmd_transclude(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 812

def mmd_transclude(input)
  return input unless MDLess.file || MDLess.meta.key?('transcludebase')

  input.gsub(/^{{(.*?)}}/) do |m|
    filename = Regexp.last_match(1).strip
    file = if MDLess.meta.key?('transcludebase')
             File.join(File.expand_path(MDLess.meta['transcludebase']), filename)
           else
             File.join(File.dirname(MDLess.file), filename)
           end
    File.exist?(file) ? "\n\n#{mmd_transclude(IO.read(file).remove_meta)}\n\n" : m
  end
end

#nest_lists(input, indent = 0) ⇒ Object 



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# File 'lib/mdless/console.rb', line 655

def nest_lists(input, indent = 0)
  input.gsub!(%r{<<list(?<id>\d+)-(?<type>.*?)>>(?<content>.*?)<</list\k<id>>>}m) do
    m = Regexp.last_match
    lines = m['content'].strip.split(/\n/)

    list = nest_lists(lines.map do |l|
      outdent = l.scan(%r{<</list\d+>>}).count
      indent += l.scan(/<<list\d+-.*?>>/).count
      indent -= outdent
      " #{l}"
    end.join("\n"), indent)
    next if list.nil?

    "<<main#{m['id']}>>#{list}<</main#{m['id']}>>\n\n"
  end

  input.gsub(%r{^(?<indent> +)<<main(?<id>\d+)>>(?<content>.*?)<</main\k<id>>>}m) do
    m = Regexp.last_match
    "#{m['indent']}#{m['content']}"
  end
end

#normalize_indentation(line) ⇒ Object 



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# File 'lib/mdless/console.rb', line 677

def normalize_indentation(line)
  line.gsub(/^([ \t]+)/) do |pre|
    pre.gsub(/\t/, ' ')
  end
end

#paragraph(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 264

def paragraph(text)
  text.scrub!
  out = if MDLess.options[:preserve_linebreaks]
          "#{xc}#{text.gsub(/ +/, ' ').strip}#{xc}#{x}\n\n"
        else
          if text.uncolor =~ / {2,}$/ || text.uncolor =~ /^%/
            "#{xc}#{text.gsub(/ +/, ' ').strip}#{xc}#{x}\n"
          else
            "#{xc}#{text.gsub(/ +/, ' ').gsub(/\n+(?![:-])/, ' ').strip}#{xc}#{x}\n\n"
          end
        end
  if MDLess.options[:at_tags] || MDLess.options[:taskpaper]
    highlight_tags(out)
  else
    out
  end
end

#post_element ⇒ Object 



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# File 'lib/mdless/console.rb', line 22

def post_element
  "<<post#{@@elementid}>>"
end

#postprocess(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 1132

def postprocess(input)
  input.scrub!

  input = highlight_wiki_links(input) if MDLess.options[:wiki_links]

  if MDLess.options[:inline_footnotes]
    input = insert_footnotes(input)
  else
    footnotes = @@footnotes.map.with_index do |fn, i|
      next if fn.nil?

      color_footnote_def(i)
    end.join("\n")
    input = "#{input}\n\n#{footnotes}"
  end
  # escaped characters
  input.gsub!(/\\(\S)/, '\1')
  # equations
  input = fix_equations(input)
  # misc html
  input.gsub!(%r{<br */?>}, "#{pre_element}\n#{post_element}")
  # render images
  input = render_images(input) if MDLess.options[:local_images]
  # format links
  input = reference_links(input) if MDLess.options[:links] == :reference || MDLess.options[:links] == :paragraph
  # lists
  input = fix_lists(input)
  fix_colors(input)
end

#pre_element ⇒ Object 



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# File 'lib/mdless/console.rb', line 17

def pre_element
  @@elementid += 1
  "<<pre#{@@elementid}>>"
end

#preprocess(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 841

def preprocess(input)
  input = color_meta(input)
  input = mmd_transclude(input) if MDLess.options[:transclude]
  input = mmd_metadata_replace(input) if MDLess.options[:mmd_metadata]
  input = fix_image_attributes(input)

  replaced_input = input.clone
  ## Replace setex headers with ATX
  replaced_input.gsub!(/^([^\n]+)\n={2,}\s*$/m, "# \\1\n")
  replaced_input.gsub!(/^([^\n]+?)\n-{2,}\s*$/m, "## \\1\n")

  @headers = get_headers(replaced_input)

  if MDLess.options[:section]
    new_content = []
    MDLess.log.info("Matching section(s) #{MDLess.options[:section].join(', ')}")
    MDLess.options[:section].each do |sect|
      comparison = MDLess.options[:section][0].is_a?(String) ? :regex : :numeric

      in_section = false
      top_level = 1
      input.split(/\n/).each_with_index do |graf, _idx|
        if graf =~ /^(#+) *(.*?)( *#+)?$/
          m = Regexp.last_match
          level = m[1].length
          title = m[2]
          if in_section
            if level >= top_level
              new_content.push(graf)
            else
              in_section = false
              break
            end
          elsif (comparison == :regex && title.downcase =~ sect.downcase.to_rx) ||
                (comparison == :numeric && title.downcase == @headers[sect - 1][1].downcase)
            in_section = true
            top_level = level + 1
            new_content.push(graf)
          else
            next
          end
        elsif in_section
          new_content.push(graf)
        end
      end
    end
    input = new_content.join("\n")
  end

  # definition lists
  input.gsub!(/(?mi)(?<=\n|\A)(?<term>(?!<:)[^\n]+)(?<def>(\n+: [^\n]+)+)/) do
    m = Regexp.last_match
    "#{color('dd term')}#{m['term']}#{xc}#{color('dd color')}#{color_dd_def(m['def'])}"
  end

  # deletions
  input.gsub!(/(?mi)(?<=\n|\A)~~(?<text>.*?)~~/) do
    m = Regexp.last_match
    "#{color('deletion')}#{m['text']}#{xc}"
  end

  # emojis
  input.gsub!(/(?<=\s|\A):(?<emoji>\S+):/) do
    m = Regexp.last_match
    emoji = CLIMarkdown::Emoji.convert_emoji(m['emoji'])
    "#{emoji}#{xc}"
  end

  input
end

#raw_html(raw_html) ⇒ Object 



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# File 'lib/mdless/console.rb', line 523

def raw_html(raw_html)
  "#{pre_element}#{color('html color')}#{color_tags(raw_html)}#{xc}#{post_element}"
end

#reference_links(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 932

def reference_links(input)
  grafs = input.split(/\n{2,}/)
  counter = 1

  grafs.map! do |graf|
    return "\n" if graf =~ /^ *\n$/

    links_added = false

    @@links.each do |link|
      next unless graf =~ /#{Regexp.escape(link[:link].gsub(/\n/, " "))}/

      table = graf.uncolor =~ /^ *\|/
      url = link[:url].uncolor
      content = link[:content]
      title = link[:title]&.uncolor
      image = link.key?(:image) && link[:image] ? true : false
      colored_link = image ? color_image_reference(counter, content) : color_link_reference(url, counter, content)
      if table
        diff = link[:link].gsub(/\n/, ' ').uncolor.length - colored_link.uncolor.gsub(/\n/, ' ').length
        graf.gsub!(/(?<=\|)([^\|]*?)#{Regexp.escape(link[:link].gsub(/\n/, " "))}(.*?)(?=\|)/) do
          before = Regexp.last_match(1)
          after = Regexp.last_match(2)
          surround = "#{before}#{after}"
          puts "**#{surround}**"
          diff += 2 if surround.uncolor.gsub(/#{CLIMarkdown::MDTableCleanup::PAD_CHAR}*/, '').strip.length.zero?
          "#{before}#{colored_link}#{after}#{' ' * diff}"
        end
      else
        graf.gsub!(/#{Regexp.escape(link[:link].gsub(/\n/, " "))}/, colored_link)
      end
      if MDLess.options[:links] == :paragraph
        if links_added
          graf += "\n#{color_reference_link(url, title, counter, image: image)}"
        else
          graf = "#{graf}\n\n#{color_reference_link(url, title, counter, image: image)}"
          links_added = true
        end
      else
        @@footer_links << color_reference_link(url, title, counter, image: image)
      end
      counter += 1
    end
    "\n#{graf}\n"
  end

  if MDLess.options[:links] == :paragraph
    grafs.join("\n")
  else
    grafs.join("\n") + "\n#{@@footer_links.join("\n")}\n"
  end
end

#render_images(input) ⇒ Object 



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# File 'lib/mdless/console.rb', line 995

def render_images(input)
  input.gsub(%r{<<img>>(.*?)<</img>>}) do
    link, title, alt_text = Regexp.last_match(1).split(/\|\|/)

    if (exec_available('imgcat') || exec_available('chafa')) && MDLess.options[:local_images]
      if exec_available('imgcat')
        MDLess.log.info('Using imgcat for image rendering')
      elsif exec_available('chafa')
        MDLess.log.info('Using chafa for image rendering')
      end
      img_path = link
      if img_path =~ /^http/ && MDLess.options[:remote_images]
        if exec_available('imgcat')
          MDLess.log.info('Using imgcat for image rendering')
          begin
            res, s = Open3.capture2(%(curl -sS "#{img_path}" 2> /dev/null | imgcat))

            if s.success?
              pre = !alt_text.nil? ? "    #{c(%i[d blue])}[#{alt_text.strip}]\n" : ''
              post = !title.nil? ? "\n    #{c(%i[b blue])}-- #{title} --" : ''
              result = pre + res + post
            end
          rescue StandardError => e
            MDLess.log.error(e)
          end
        elsif exec_available('chafa')
          MDLess.log.info('Using chafa for image rendering')
          term = '-f sixels'
          term = ENV['TERMINAL_PROGRAM'] =~ /iterm/i ? '-f iterm' : term
          term = ENV['TERMINAL_PROGRAM'] =~ /kitty/i ? '-f kitty' : term
          FileUtils.rm_r '.mdless_tmp', force: true if File.directory?('.mdless_tmp')
          Dir.mkdir('.mdless_tmp')
          Dir.chdir('.mdless_tmp')
          `curl -SsO #{img_path} 2> /dev/null`
          tmp_img = File.basename(img_path)
          img = `chafa #{term} "#{tmp_img}"`
          pre = alt_text ? "    #{c(%i[d blue])}[#{alt_text.strip}]\n" : ''
          post = title ? "\n    #{c(%i[b blue])}-- #{title} --" : ''
          result = pre + img + post
          Dir.chdir('..')
          FileUtils.rm_r '.mdless_tmp', force: true
        else
          MDLess.log.warn('No viewer for remote images')
        end
      else
        if img_path =~ %r{^[~/]}
          img_path = File.expand_path(img_path)
        elsif MDLess.file
          base = File.expand_path(File.dirname(MDLess.file))
          img_path = File.join(base, img_path)
        end
        if File.exist?(img_path)
          pre = !alt_text.nil? ? "    #{c(%i[d blue])}[#{alt_text.strip}]\n" : ''
          post = !title.nil? ? "\n    #{c(%i[b blue])}-- #{title} --" : ''
          if exec_available('imgcat')
            img = `imgcat "#{img_path}"`
          elsif exec_available('chafa')
            term = '-f sixels'
            term = ENV['TERMINAL_PROGRAM'] =~ /iterm/i ? '-f iterm' : term
            term = ENV['TERMINAL_PROGRAM'] =~ /kitty/i ? '-f kitty' : term
            img = `chafa #{term} "#{img_path}"`
          end
          result = pre + img + post
        end
      end
    end
    if result.nil?
      color_image_tag(link, title, alt_text)
    else
      "#{pre_element}#{result}#{xc}#{post_element}"
    end
  end
end

#strikethrough(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 527

def strikethrough(text)
  "#{pre_element}#{color('deletion')}#{text}#{xc}#{post_element}"
end

#superscript(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 531

def superscript(text)
  "#{pre_element}#{color('super')}^#{text}#{xc}#{post_element}"
end

#table(header, body) ⇒ Object 



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# File 'lib/mdless/console.rb', line 303

def table(header, body)
  formatted = CLIMarkdown::MDTableCleanup.new([
    header.to_s,
    table_header_row,
    "|\n",
    "#{body}\n\n"
  ].join(''))
  @header_row = []
  res = formatted.to_md
  "#{color_table(res)}\n\n"
  # res
end

#table_cell(content, alignment) ⇒ Object 



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# File 'lib/mdless/console.rb', line 321

def table_cell(content, alignment)
  @header_row ||= []
  @header_row << alignment if @table_cols && @header_row.count < @table_cols
  %(#{content} |)
end

#table_header_row ⇒ Object 



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# File 'lib/mdless/console.rb', line 288

def table_header_row
  @header_row.map do |alignment|
    case alignment
    when :left
      '|:---'
    when :right
      '|---:'
    when :center
      '|:--:'
    else
      '|----'
    end
  end.join('') + '|'
end

#table_row(content) ⇒ Object 



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# File 'lib/mdless/console.rb', line 316

def table_row(content)
  @table_cols = content.scan(/\|/).count
  %(#{content}\n)
end

#triple_emphasis(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 379

def triple_emphasis(text)
  [
    pre_element,
    color('emphasis bold-italic'),
    MDLess.theme['emphasis']['italic_character'],
    MDLess.theme['emphasis']['bold_character'],
    text,
    MDLess.theme['emphasis']['bold_character'],
    MDLess.theme['emphasis']['italic_character'],
    xc,
    post_element
  ].join
end

#uncolor_grafs(text) ⇒ Object 



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# File 'lib/mdless/console.rb', line 282

def uncolor_grafs(text)
  text.gsub(/#{Regexp.escape(color("text"))}/, color('list color'))
end

#x ⇒ Object 



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# File 'lib/mdless/console.rb', line 30

def x
  c([:reset])
end

#xc ⇒ Object 



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# File 'lib/mdless/console.rb', line 26

def xc
  x + color('text')
end