1 #pragma once 2 #include "http_request.hpp" 3 4 #include <boost/algorithm/string.hpp> 5 6 namespace http_helpers 7 { 8 inline std::vector<std::string> parseAccept(std::string_view header) 9 { 10 std::vector<std::string> encodings; 11 // chrome currently sends 6 accepts headers, firefox sends 4. 12 encodings.reserve(6); 13 boost::split(encodings, header, boost::is_any_of(", "), 14 boost::token_compress_on); 15 16 return encodings; 17 } 18 19 inline bool requestPrefersHtml(std::string_view header) 20 { 21 for (const std::string& encoding : parseAccept(header)) 22 { 23 if (encoding == "text/html") 24 { 25 return true; 26 } 27 if (encoding == "application/json") 28 { 29 return false; 30 } 31 } 32 return false; 33 } 34 35 inline bool isOctetAccepted(std::string_view header) 36 { 37 for (const std::string& encoding : parseAccept(header)) 38 { 39 if (encoding == "*/*" || encoding == "application/octet-stream") 40 { 41 return true; 42 } 43 } 44 return false; 45 } 46 47 inline std::string urlEncode(const std::string_view value) 48 { 49 std::ostringstream escaped; 50 escaped.fill('0'); 51 escaped << std::hex; 52 53 for (const char c : value) 54 { 55 // Keep alphanumeric and other accepted characters intact 56 if (isalnum(c) || c == '-' || c == '_' || c == '.' || c == '~') 57 { 58 escaped << c; 59 continue; 60 } 61 62 // Any other characters are percent-encoded 63 escaped << std::uppercase; 64 escaped << '%' << std::setw(2) 65 << static_cast<int>(static_cast<unsigned char>(c)); 66 escaped << std::nouppercase; 67 } 68 69 return escaped.str(); 70 } 71 } // namespace http_helpers 72