76 lines
2 KiB
Ruby
76 lines
2 KiB
Ruby
# frozen_string_literal: true
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# Inspired in great part by Discourse's Email::Receiver
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module Gitlab
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module Email
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class ReplyParser
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attr_accessor :message
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def initialize(message, trim_reply: true, append_reply: false)
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@message = message
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@trim_reply = trim_reply
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@append_reply = append_reply
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end
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def execute
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body = select_body(message)
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encoding = body.encoding
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body, stripped_text = EmailReplyTrimmer.trim(body, @append_reply) if @trim_reply
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return '' unless body
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# not using /\s+$/ here because that deletes empty lines
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body = body.gsub(/[ \t]$/, '')
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# NOTE: We currently don't support empty quotes.
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# EmailReplyTrimmer allows this as a special case,
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# so we detect it manually here.
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return "" if body.lines.all? { |l| l.strip.empty? || l.start_with?('>') }
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encoded_body = body.force_encoding(encoding).encode("UTF-8")
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return encoded_body unless @append_reply
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[encoded_body, stripped_text.force_encoding(encoding).encode("UTF-8")]
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end
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private
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def select_body(message)
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part =
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if message.multipart?
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message.text_part || message.html_part || message
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else
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message
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end
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decoded = fix_charset(part)
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return "" unless decoded
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# Certain trigger phrases that means we didn't parse correctly
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if decoded =~ %r{(Content\-Type\:|multipart/alternative|text/plain)}
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return ""
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end
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if (part.content_type || '').include? 'text/html'
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HTMLParser.parse_reply(decoded)
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else
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decoded
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end
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end
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# Force encoding to UTF-8 on a Mail::Message or Mail::Part
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def fix_charset(object)
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return if object.nil?
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if object.charset
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object.body.decoded.force_encoding(object.charset.gsub(/utf8/i, "UTF-8")).encode("UTF-8").to_s
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else
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object.body.to_s
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end
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rescue StandardError
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nil
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end
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end
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end
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end
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