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|
module Banzai
module Filter
class BlockquoteFenceFilter < HTML::Pipeline::TextFilter
REGEX = %r{
(?<code>
# Code blocks:
# ```
# Anything, including `>>>` blocks which are ignored by this filter
# ```
^```
.+?
\n```$
)
|
(?<html>
# HTML block:
# <tag>
# Anything, including `>>>` blocks which are ignored by this filter
# </tag>
^<[^>]+?>\n
.+?
\n<\/[^>]+?>$
)
|
(?:
# Blockquote:
# >>>
# Anything, including code and HTML blocks
# >>>
^>>>\n
(?<quote>
(?:
# Any character that doesn't introduce a code or HTML block
(?!
^```
|
^<[^>]+?>\n
)
.
|
# A code block
\g<code>
|
# An HTML block
\g<html>
)+?
)
\n>>>$
)
}mx.freeze
def initialize(text, context = nil, result = nil)
super text, context, result
@text = @text.delete("\r")
end
def call
@text.gsub(REGEX) do
if $~[:quote]
$~[:quote].gsub(/^/, "> ").gsub(/^> $/, ">")
else
$~[0]
end
end
end
end
end
end
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