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.



8
9
10
 
# File 'lib/mdless/console.rb', line 8

def file=(value)
  @file = value
end

#headers ⇒ Object

Returns the value of attribute headers.



7
8
9
 
# File 'lib/mdless/console.rb', line 7

def headers
  @headers
end

Instance Method Details



345
346
347
348
349
350
351
352
353
354
355
356
357
 
# File 'lib/mdless/console.rb', line 345

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 



211
212
213
214
215
216
217
 
# File 'lib/mdless/console.rb', line 211

def block_code(code, language)
  # Wrap in <<codeblock>>...<</codeblock>> markers so postprocess can
  # skip the backslash-escape strip inside code-block content (per the
  # CommonMark spec, backslash-escapes do not apply inside code blocks).
  # The markers are removed in postprocess after the strip pass.
  "\n\n<<codeblock>>#{hilite_code(code, language)}#{xc}<</codeblock>>\n\n"
end

#block_html(raw_html) ⇒ Object 



234
235
236
 
# File 'lib/mdless/console.rb', line 234

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

#block_quote(quote) ⇒ Object 



219
220
221
222
223
224
225
226
227
228
229
230
231
232
 
# File 'lib/mdless/console.rb', line 219

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 



61
62
63
64
65
66
67
68
69
70
71
72
73
 
# File 'lib/mdless/console.rb', line 61

def code_bg(input, width)
  # NOTE: trailing reset is `xc` (\e[0;37m), not bare `x` (\e[0m).
  # clean_escapes in converter.rb strips every bare \e[0m from the final
  # output, so a bare-reset trailer would leak the code-block bg into the
  # rest of the line (terminals with bce extend bg to the right edge).
  # \e[0;37m embeds the same `0` reset parameter alongside a fg set, so
  # it survives clean_escapes and still clears the bg before the newline.
  pad_char = MDLess.options[:nbsp_padding] ? "\u00A0" : ' '
  input.split(/\n/).map do |line|
    tail = line.uncolor.length < width ? pad_char * (width - line.uncolor.length) : ''
    "#{x}#{line}#{tail}#{xc}"
  end.join("\n")
end

#codespan(code) ⇒ Object 



359
360
361
362
363
364
365
366
367
368
369
370
371
 
# File 'lib/mdless/console.rb', line 359

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 



184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
 
# File 'lib/mdless/console.rb', line 184

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 



931
932
933
934
935
936
937
938
939
940
941
942
 
# File 'lib/mdless/console.rb', line 931

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 



563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
 
# File 'lib/mdless/console.rb', line 563

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 



508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
 
# File 'lib/mdless/console.rb', line 508

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 



442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
 
# File 'lib/mdless/console.rb', line 442

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 



423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
 
# File 'lib/mdless/console.rb', line 423

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 



473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
 
# File 'lib/mdless/console.rb', line 473

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 



944
945
946
947
948
949
 
# File 'lib/mdless/console.rb', line 944

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 



634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
 
# File 'lib/mdless/console.rb', line 634

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 



761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
 
# File 'lib/mdless/console.rb', line 761

def color_meta(text)
  input = text.dup
  input.clean_empty_lines!
  MDLess.meta = {}
  pad_char = MDLess.options[:nbsp_padding] ? "\u00A0" : ' '
  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 += pad_char * (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 += pad_char * (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 



491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
 
# File 'lib/mdless/console.rb', line 491

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 



34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
 
# 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 



537
538
539
 
# File 'lib/mdless/console.rb', line 537

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

#double_emphasis(text) ⇒ Object 



373
374
375
376
377
378
379
380
381
382
383
 
# File 'lib/mdless/console.rb', line 373

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 



385
386
387
388
389
390
391
392
393
394
395
 
# File 'lib/mdless/console.rb', line 385

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 



53
54
55
56
57
58
59
 
# 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 



1004
1005
1006
1007
1008
1009
1010
1011
1012
 
# File 'lib/mdless/console.rb', line 1004

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 



1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
 
# File 'lib/mdless/console.rb', line 1088

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 



856
857
858
 
# File 'lib/mdless/console.rb', line 856

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

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



701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
 
# File 'lib/mdless/console.rb', line 701

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 



725
726
727
728
729
730
 
# File 'lib/mdless/console.rb', line 725

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 



669
670
671
 
# File 'lib/mdless/console.rb', line 669

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

#fix_lists(input) ⇒ Object 



663
664
665
666
667
 
# File 'lib/mdless/console.rb', line 663

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

#footnote_def(text, idx) ⇒ Object 



582
583
584
 
# File 'lib/mdless/console.rb', line 582

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

#footnote_ref(text) ⇒ Object 



586
587
588
589
590
591
592
593
594
 
# File 'lib/mdless/console.rb', line 586

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

#footnotes(_text) ⇒ Object 



553
554
555
556
557
558
559
560
561
 
# File 'lib/mdless/console.rb', line 553

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

#get_headers(input) ⇒ Object 



732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
 
# File 'lib/mdless/console.rb', line 732

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 



238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
 
# File 'lib/mdless/console.rb', line 238

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 



411
412
413
 
# File 'lib/mdless/console.rb', line 411

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

#highlight_tags(input) ⇒ Object 



1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
 
# File 'lib/mdless/console.rb', line 1113

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 



1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
 
# File 'lib/mdless/console.rb', line 1134

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 



75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
 
# File 'lib/mdless/console.rb', line 75

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?
        # NOTE: do NOT append xc/\n after blackout. blackout's `$` regex
        # injects the bg-color escape at the end of every line; anything
        # appended after that becomes part of the last line when code_bg
        # later splits on \n, and a trailing xc there resets the bg so
        # the last line's right-padding renders without the block bg.
        # code_bg now emits its own per-line xc trailer instead.
        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'])
      end
    rescue StandardError => e
      MDLess.log.error(e)
      hilite = code_block
    end
  else
    # See note above re: dropping the trailing xc/\n.
    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'])
  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 



278
279
280
 
# File 'lib/mdless/console.rb', line 278

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

#image(link, title, alt_text) ⇒ Object 



415
416
417
 
# File 'lib/mdless/console.rb', line 415

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

#indent_lines(input) ⇒ Object 



623
624
625
626
627
628
629
630
631
632
 
# File 'lib/mdless/console.rb', line 623

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 



596
597
598
599
600
601
602
603
604
605
606
 
# File 'lib/mdless/console.rb', line 596

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 



419
420
421
 
# File 'lib/mdless/console.rb', line 419

def linebreak
  "  \n"
end

#link(link, title, content) ⇒ Object 



526
527
528
529
530
531
532
533
534
535
 
# File 'lib/mdless/console.rb', line 526

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 



608
609
610
611
 
# File 'lib/mdless/console.rb', line 608

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

#list_item(text, list_type) ⇒ Object 



613
614
615
616
617
618
619
620
621
 
# File 'lib/mdless/console.rb', line 613

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 



845
846
847
848
849
850
851
852
853
854
 
# File 'lib/mdless/console.rb', line 845

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 



831
832
833
834
835
836
837
838
839
840
841
842
843
 
# File 'lib/mdless/console.rb', line 831

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 



673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
 
# File 'lib/mdless/console.rb', line 673

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 



695
696
697
698
699
 
# File 'lib/mdless/console.rb', line 695

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

#paragraph(text) ⇒ Object 



282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
 
# File 'lib/mdless/console.rb', line 282

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 



22
23
24
 
# File 'lib/mdless/console.rb', line 22

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

#postprocess(input) ⇒ Object 



1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
 
# File 'lib/mdless/console.rb', line 1151

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: strip backslash-escapes per CommonMark spec
  # (https://spec.commonmark.org/0.31.2/#backslash-escapes), but only
  # for the ASCII punctuation set the spec actually recognizes, and
  # only on non-code-block content. block_code wraps its output in
  # <<codeblock>>...<</codeblock>> markers so we can isolate those
  # regions here. The previous `\\(\S)` form ate every backslash-
  # followed-by-non-space, including `\n \t \s \S \d \w \1 \2 ...`
  # inside code blocks, which shifted padding-aligned right edges
  # left by N chars per stripped backslash.
  input = input.split(%r{(<<codeblock>>.*?<</codeblock>>)}m).map.with_index do |seg, i|
    i.odd? ? seg : seg.gsub(/\\([!"\#$%&'()*+,\-.\/:;<=>?@\[\\\]^_`{|}~])/, '\1')
  end.join
  input.gsub!(%r{<</?codeblock>>}, '')
  # 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 



17
18
19
20
 
# File 'lib/mdless/console.rb', line 17

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

#preprocess(input) ⇒ Object 



860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
 
# File 'lib/mdless/console.rb', line 860

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 



541
542
543
 
# File 'lib/mdless/console.rb', line 541

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

#reference_links(input) ⇒ Object 



951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
 
# File 'lib/mdless/console.rb', line 951

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 



1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
 
# File 'lib/mdless/console.rb', line 1014

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 



545
546
547
 
# File 'lib/mdless/console.rb', line 545

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

#superscript(text) ⇒ Object 



549
550
551
 
# File 'lib/mdless/console.rb', line 549

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

#table(header, body) ⇒ Object 



321
322
323
324
325
326
327
328
329
330
331
332
 
# File 'lib/mdless/console.rb', line 321

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 



339
340
341
342
343
 
# File 'lib/mdless/console.rb', line 339

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

#table_header_row ⇒ Object 



306
307
308
309
310
311
312
313
314
315
316
317
318
319
 
# File 'lib/mdless/console.rb', line 306

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 



334
335
336
337
 
# File 'lib/mdless/console.rb', line 334

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

#triple_emphasis(text) ⇒ Object 



397
398
399
400
401
402
403
404
405
406
407
408
409
 
# File 'lib/mdless/console.rb', line 397

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 



300
301
302
 
# File 'lib/mdless/console.rb', line 300

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

#x ⇒ Object 



30
31
32
 
# File 'lib/mdless/console.rb', line 30

def x
  c([:reset])
end

#xc ⇒ Object 



26
27
28
 
# File 'lib/mdless/console.rb', line 26

def xc
  x + color('text')
end