improvements on emailparser

email_parser/emailparser.h

@@ -6,6 +6,7 @@
 #include <boost/regex.hpp>
 
 class EmailParser {
+    boost::regex headings_regex, end_marker_regex, part_end_regex;
 public:
     EmailParser();
     std::map<std::string, std::string> parse(std::string &email_content);
@@ -13,6 +14,7 @@ public:
     std::vector<std::pair<int, int>> find_parts(const boost::regex &start_regex, const boost::regex &end_regex, const std::string &content);
     std::string find_check_parameters(std::string &part);
     std::string extract_qr_url_from_img(std::string &part);
+    std::string extract_content_transfer_encoding(std::string &part);
     std::vector<std::string> extract_qr_embeddings_from_part(std::string &part);
 
     std::string search_in_images(std::string &content);