mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 08:09:33 +08:00
30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
110 lines
2.6 KiB
Ruby
110 lines
2.6 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require_dependency 'pretty_text'
|
|
|
|
# A very simple formatter for imported emails
|
|
class EmailCook
|
|
|
|
def self.url_regexp
|
|
@url_regexp ||= /((?:https?:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.])(?:[^\s()<>]+|\([^\s()<>]+\))+(?:\([^\s()<>]+\)|[^`!()\[\]{};:'".,<>?«»“”‘’\s]))/
|
|
end
|
|
|
|
def self.raw_regexp
|
|
@raw_regexp ||= /^\[plaintext\]$\n(.*)\n^\[\/plaintext\]$(?:\s^\[attachments\]$\n(.*)\n^\[\/attachments\]$)?(?:\s^\[elided\]$\n(.*)\n^\[\/elided\]$)?/m
|
|
end
|
|
|
|
def initialize(raw)
|
|
@raw = raw
|
|
@body, @attachment_html, @elided = @raw.scan(EmailCook.raw_regexp).first
|
|
end
|
|
|
|
def add_quote(result, buffer)
|
|
if buffer.present?
|
|
return if buffer =~ /\A(<br>)+\z$/
|
|
result << "<blockquote>#{buffer}</blockquote>"
|
|
end
|
|
end
|
|
|
|
def link_string!(line, unescaped_line)
|
|
unescaped_line = unescaped_line.strip
|
|
unescaped_line.scan(EmailCook.url_regexp).each do |m|
|
|
url = m[0]
|
|
|
|
if unescaped_line == url
|
|
# this could be oneboxed
|
|
val = %|<a href="#{url}" class="onebox" target="_blank">#{url}</a>|
|
|
else
|
|
val = %|<a href="#{url}">#{url}</a>|
|
|
end
|
|
|
|
line.gsub!(url, val)
|
|
end
|
|
end
|
|
|
|
def htmlify(text)
|
|
result = +""
|
|
quote_buffer = +""
|
|
|
|
in_text = false
|
|
in_quote = false
|
|
|
|
text.each_line do |line|
|
|
# replace indentation with non-breaking spaces
|
|
line.sub!(/^\s{2,}/) { |s| "\u00A0" * s.length }
|
|
|
|
if line =~ /^\s*>/
|
|
in_quote = true
|
|
line.sub!(/^[\s>]*/, '')
|
|
|
|
unescaped_line = line
|
|
line = CGI.escapeHTML(line)
|
|
link_string!(line, unescaped_line)
|
|
|
|
quote_buffer << line << "<br>"
|
|
elsif in_quote
|
|
add_quote(result, quote_buffer)
|
|
quote_buffer = ""
|
|
in_quote = false
|
|
else
|
|
|
|
sz = line.size
|
|
|
|
unescaped_line = line
|
|
line = CGI.escapeHTML(line)
|
|
link_string!(line, unescaped_line)
|
|
|
|
if sz < 60
|
|
if in_text && line == "\n"
|
|
result << "<br>"
|
|
end
|
|
result << line
|
|
result << "<br>"
|
|
|
|
in_text = false
|
|
else
|
|
result << line
|
|
in_text = true
|
|
end
|
|
end
|
|
end
|
|
|
|
if in_quote && quote_buffer.present?
|
|
add_quote(result, quote_buffer)
|
|
end
|
|
|
|
result.gsub!(/(<br>\n*){3,10}/, '<br><br>')
|
|
result
|
|
end
|
|
|
|
def cook(opts = {})
|
|
# fallback to PrettyText if we failed to detect a body
|
|
return PrettyText.cook(@raw, opts) if @body.nil?
|
|
|
|
result = htmlify(@body)
|
|
result << "\n<br>" << @attachment_html if @attachment_html.present?
|
|
result << "\n<br><br>" << Email::Receiver.elided_html(htmlify(@elided)) if @elided.present?
|
|
result
|
|
end
|
|
|
|
end
|