Class: ReverseMarkdown::Cleaner

Inherits:
Object
  • Object
show all
Defined in:
lib/reverse_markdown/cleaner.rb

Instance Method Summary collapse

Instance Method Details

#clean_punctuation_characters(string) ⇒ Object 



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# File 'lib/reverse_markdown/cleaner.rb', line 58

def clean_punctuation_characters(string)
  string.gsub(/(\*\*|~~|__)\s([\.!\?'"])/, "\\1".strip + "\\2")
end

#clean_tag_borders(string) ⇒ Object

Find non-asterisk content that is enclosed by two or more asterisks. Ensure that only one whitespace occurs in the border area. Same for underscores and brackets.



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# File 'lib/reverse_markdown/cleaner.rb', line 32

def clean_tag_borders(string)
  result = string.gsub(/\s?\*{2,}.*?\*{2,}\s?/) do |match|
    preserve_border_whitespaces(match, default_border: ReverseMarkdown.config.tag_border) do
      match.strip.sub('** ', '**').sub(' **', '**')
    end
  end

  result = result.gsub(/\s?\_{2,}.*?\_{2,}\s?/) do |match|
    preserve_border_whitespaces(match, default_border: ReverseMarkdown.config.tag_border) do
      match.strip.sub('__ ', '__').sub(' __', '__')
    end
  end

  result = result.gsub(/\s?~{2,}.*?~{2,}\s?/) do |match|
    preserve_border_whitespaces(match, default_border: ReverseMarkdown.config.tag_border) do
      match.strip.sub('~~ ', '~~').sub(' ~~', '~~')
    end
  end

  result.gsub(/\s?\[.*?\]\s?/) do |match|
    preserve_border_whitespaces(match) do
      match.strip.sub('[ ', '[').sub(' ]', ']')
    end
  end
end

#force_encoding(string) ⇒ Object 



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# File 'lib/reverse_markdown/cleaner.rb', line 62

def force_encoding(string)
  ReverseMarkdown.config.force_encoding or return string
  string.encode('UTF-8', 'binary', invalid: :replace, undef: :replace, replace: '')
end

#remove_inner_whitespaces(string) ⇒ Object 



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# File 'lib/reverse_markdown/cleaner.rb', line 20

def remove_inner_whitespaces(string)
  string.each_line.inject("") do |memo, line|
    memo + preserve_border_whitespaces(line) do
      line.strip.gsub(/[ \t]{2,}/, ' ')
    end
  end
end

#remove_leading_newlines(string) ⇒ Object 



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# File 'lib/reverse_markdown/cleaner.rb', line 16

def remove_leading_newlines(string)
  string.gsub(/\A\n+/, '')
end

#remove_newlines(string) ⇒ Object 



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# File 'lib/reverse_markdown/cleaner.rb', line 12

def remove_newlines(string)
  string.gsub(/\n{3,}/, "\n\n")
end

#tidy(string) ⇒ Object 



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# File 'lib/reverse_markdown/cleaner.rb', line 4

def tidy(string)
  result = remove_inner_whitespaces(string)
  result = remove_newlines(result)
  result = remove_leading_newlines(result)
  result = clean_tag_borders(result)
  clean_punctuation_characters(result)
end