Class: Slack::Messenger::Util::LinkFormatter

Inherits:
Object
  • Object
show all
Defined in:
lib/slack-messenger/util/link_formatter.rb

Constant Summary collapse

HTML_PATTERN =

regex101.com/r/m7CTcW/1

'<a' \
  '(?:.*?)' \
  'href=[\'"](?P<link>.+?)[\'"]' \
'(?:.*?)>' \
  '(?P<text>.+?)' \
'</a>'
VALID_URI_CHARS = 
'\w\-\.\~\:\/\?\#\[\]\@\!\$\&\'\*\+\,\;\='
MARKDOWN_PATTERN =

Attempt at only matching pairs of parens per the markdown spec spec.commonmark.org/0.27/#links regex101.com/r/komyFe/1

'\[' \
  '(?P<text>[^\[\]]*?)' \
'\]' \
'\(' \
  '(?P<link>' \
    '(?:https?:\/\/|mailto:)' \
    "(?:[#{VALID_URI_CHARS}]*?|[#{VALID_URI_CHARS}]*?\\([#{VALID_URI_CHARS}]*?\\)[#{VALID_URI_CHARS}]*?)" \
  ')' \
'\)'
HTML_REGEXP = 
UntrustedRegexp.new(HTML_PATTERN, multiline: true)
MARKDOWN_REGEXP = 
UntrustedRegexp.new(MARKDOWN_PATTERN, multiline: true)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(string, formats: %i[html markdown]) ⇒ LinkFormatter

Returns a new instance of LinkFormatter.



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# File 'lib/slack-messenger/util/link_formatter.rb', line 45

def initialize string, formats: %i[html markdown]
  @formats = formats
  @orig    = string.respond_to?(:scrub) ? string.scrub : string
end

Instance Attribute Details

#formats ⇒ Object (readonly)

Returns the value of attribute formats.



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# File 'lib/slack-messenger/util/link_formatter.rb', line 43

def formats
  @formats
end

Class Method Details

.format(string, **opts) ⇒ Object 



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# File 'lib/slack-messenger/util/link_formatter.rb', line 38

def format string, **opts
  LinkFormatter.new(string, **opts).formatted
end

Instance Method Details

#formatted ⇒ Object

rubocop:disable Lint/RescueWithoutErrorClass



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# File 'lib/slack-messenger/util/link_formatter.rb', line 51

def formatted
  return @orig unless @orig.respond_to?(:gsub)

  sub_markdown_links(sub_html_links(@orig))
rescue => e
  raise e unless RUBY_VERSION < "2.1" && e.message.include?("invalid byte sequence")
  raise e, "#{e.message}. Consider including the 'string-scrub' gem to strip invalid characters"
end