57 lines
1.7 KiB
Ruby
57 lines
1.7 KiB
Ruby
class SimpleFormatComponent < ApplicationComponent
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# see: https://github.com/vmg/redcarpet#and-its-like-really-simple-to-use
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REDCARPET_EXTENSIONS = {
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no_intra_emphasis: false,
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tables: false,
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fenced_code_blocks: false,
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autolink: false,
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disable_indented_code_blocks: false,
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strikethrough: false,
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lax_spacing: false,
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space_after_headers: false,
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superscript: false,
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underline: false,
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highlight: false,
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quote: false,
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footnotes: false
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}
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# see: https://github.com/vmg/redcarpet#darling-i-packed-you-a-couple-renderers-for-lunch
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REDCARPET_RENDERER_OPTS = {
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no_images: true
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}
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SIMPLE_URL_REGEX = %r{https?://\S+}
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EMAIL_IN_TEXT_REGEX = Regexp.new(Devise.email_regexp.source.gsub(/\\A|\\z/, '\b'))
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def initialize(text, allow_a: true, class_names_map: {})
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@allow_a = allow_a
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@text = (text || "").gsub(/\R/, "\n\n") # force double \n otherwise a single one won't split paragraph
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.split("\n\n") #
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.map(&:lstrip) # this block prevent redcarpet to consider " text" as block code by lstriping
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.join("\n\n")
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.gsub(EMAIL_IN_TEXT_REGEX) { _1.gsub('_', '\\_') } # Workaround for redcarpet bug on autolink email having _. Cf tests
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if !@allow_a
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@text = @text.gsub(SIMPLE_URL_REGEX) { _1.gsub('_', '\\_') } # Escape underscores in URLs
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end
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@renderer = Redcarpet::Markdown.new(
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Redcarpet::BareRenderer.new(class_names_map:),
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REDCARPET_EXTENSIONS.merge(autolink: @allow_a)
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)
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end
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def tags
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if @allow_a
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Rails.configuration.action_view.sanitized_allowed_tags + ['a']
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else
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Rails.configuration.action_view.sanitized_allowed_tags
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end
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end
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def attributes
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['target', 'rel', 'href', 'class', 'title']
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end
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end
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