src/main.cpp

   1 /*\r
   2  * Copyright (C) 2015, 2016 "IoT.bzh"\r
   3  * Author "Loïc Collignon" <loic.collignon@iot.bzh>\r
   4  * Author "Romain Forlot" <romain.forlot@iot.bzh>\r
   5  *\r
   6  * Licensed under the Apache License, Version 2.0 (the "License");\r
   7  * you may not use this file except in compliance with the License.\r
   8  * You may obtain a copy of the License at\r
   9  *\r
  10  *       http://www.apache.org/licenses/LICENSE-2.0\r
  11  *\r
  12  * Unless required by applicable law or agreed to in writing, software\r
  13  * distributed under the License is distributed on an "AS IS" BASIS,\r
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  15  * See the License for the specific language governing permissions and\r
  16  * limitations under the License.\r
  17  */\r
  18 \r
  19 #include <unistd.h>\r
  20 #include <stdlib.h>\r
  21 #include <libgen.h>\r
  22 #include <exception>\r
  23 #include <fstream>\r
  24 #include <iostream>\r
  25 #include <string>\r
  26 #include <numeric>\r
  27 #include <iterator>\r
  28 #include <json.hpp>\r
  29 #include "openxc/message_set.hpp"\r
  30 \r
  31 #define EXIT_SUCCESS                            0\r
  32 #define EXIT_UNKNOWN_ERROR                      1\r
  33 #define EXIT_COMMAND_LINE_ERROR         2\r
  34 #define EXIT_PROGRAM_ERROR                      3\r
  35 \r
  36 template <typename T>\r
  37 struct generator\r
  38 {\r
  39         T v_;\r
  40         std::string line_prefix_;\r
  41         generator(T v, std::string line_prefix = "") : v_{v}, line_prefix_{line_prefix} {}\r
  42 };\r
  43 \r
  44 template <>\r
  45 struct generator<openxc::signal>\r
  46 {\r
  47         const openxc::signal& v_;\r
  48         std::uint32_t index_;\r
  49         std::string line_prefix_;\r
  50         generator(const openxc::signal& v, std::uint32_t index, std::string line_prefix = "")\r
  51                 : v_{v}, index_{index}, line_prefix_{line_prefix}\r
  52         {\r
  53         }\r
  54 };\r
  55 \r
  56 template <typename T>\r
  57 generator<T> gen(const T& v, std::string line_prefix = "") { return generator<T>(v, line_prefix); }\r
  58 \r
  59 generator<openxc::signal> gen(const openxc::signal& v, std::uint32_t index, std::string line_prefix = "")\r
  60 {\r
  61         return generator<openxc::signal>(v, index, line_prefix);\r
  62 }\r
  63 \r
  64 template <typename T>\r
  65 std::ostream& operator<<(std::ostream& o, const generator<T>& v)\r
  66 {\r
  67         o << v.line_prefix_ << v.v_;\r
  68         return o;\r
  69 }\r
  70 \r
  71 template <>\r
  72 std::ostream& operator<<(std::ostream& o, const generator<bool>& v)\r
  73 {\r
  74         o << v.line_prefix_ << (v.v_ ? "true" : "false");\r
  75         return o;\r
  76 }\r
  77 \r
  78 template <>\r
  79 std::ostream& operator<<(std::ostream& o, const generator<float>& v)\r
  80 {\r
  81         o << v.line_prefix_ << std::showpoint << v.v_ << "f";\r
  82         return o;\r
  83 }\r
  84 \r
  85 template <>\r
  86 std::ostream& operator<<(std::ostream& o, const generator<std::string>& v)\r
  87 {\r
  88         o << v.line_prefix_ << '\"' << v.v_ << '\"';\r
  89         return o;\r
  90 }\r
  91 \r
  92 template <typename T>\r
  93 std::ostream& operator<<(std::ostream& o, const generator<std::vector<T>>& v)\r
  94 {\r
  95 //      o << v.line_prefix_;\r
  96         auto sz = v.v_.size();\r
  97         for(const T& i : v.v_)\r
  98         {\r
  99                 o << gen(i, v.line_prefix_ + '\t');\r
 100                 if (sz > 1) o << ",";\r
 101                 --sz;\r
 102 //              o << '\n';\r
 103         }\r
 104 //      o << v.line_prefix_;\r
 105         return o;\r
 106 }\r
 107 \r
 108 template <>\r
 109 std::ostream& operator<<(std::ostream& o, const generator<openxc::message_set>& v)\r
 110 {\r
 111         o       << v.line_prefix_\r
 112                 << "{std::make_shared<can_message_set_t>(can_message_set_t{"\r
 113                 << "0,"\r
 114                 << gen(v.v_.name()) << ",\n"\r
 115                 << "\t\t\t{ // beginning can_message_definition_ vector\n"\r
 116                 << gen(v.v_.messages(), "\t\t\t")\r
 117                 << "\n\t\t}, // end can_message_definition vector\n"\r
 118                 << "\t\t\t{ // beginning diagnostic_messages_ vector\n"\r
 119                 << gen(v.v_.diagnostic_messages(),"\t\t\t") << "\n"\r
 120                 << "\t\t\t} // end diagnostic_messages_ vector\n"\r
 121                 << "\t\t})} // end can_message_set entry\n";\r
 122         return o;\r
 123 }\r
 124 \r
 125 template <>\r
 126 std::ostream& operator<<(std::ostream& o, const generator<std::map<std::string, std::vector<std::uint32_t>>>& v)\r
 127 {\r
 128         o << v.line_prefix_ << "{\n";\r
 129         std::uint32_t c1 = (uint32_t)v.v_.size();\r
 130         for(const auto& state : v.v_)\r
 131         {\r
 132                 std::uint32_t c2 = (uint32_t)state.second.size();\r
 133                 for(const auto& i : state.second)\r
 134                 {\r
 135                         o << v.line_prefix_ << "\t" << "{" << i << "," << gen(state.first) << "}";\r
 136                         if (c1 > 1 || c2 > 1) o << ',';\r
 137                         o << '\n';\r
 138                         --c2;\r
 139                 }\r
 140                 --c1;\r
 141         }\r
 142         o << v.line_prefix_ << "}";\r
 143         return o;\r
 144 }\r
 145 \r
 146 template <>\r
 147 std::ostream& operator<<(std::ostream& o, const generator<openxc::signal>& v)\r
 148 {\r
 149         o       << v.line_prefix_ << "{std::make_shared<can_signal_t> (can_signal_t{\n"\r
 150                 << v.line_prefix_ << "\t" << gen(v.v_.generic_name()) << ",\n"\r
 151                 << v.line_prefix_ << "\t" << v.v_.bit_position() << ",\n"\r
 152                 << v.line_prefix_ << "\t" << v.v_.bit_size() << ",\n"\r
 153                 << v.line_prefix_ << "\t" << gen(v.v_.factor()) << ",\n"\r
 154                 << v.line_prefix_ << "\t" << v.v_.offset() << ",\n"\r
 155                 << v.line_prefix_ << "\t" << "0,\n"\r
 156                 << v.line_prefix_ << "\t" << "0,\n"\r
 157                 << v.line_prefix_ << "\tfrequency_clock_t(" << gen(v.v_.max_frequency()) << "),\n"\r
 158                 << v.line_prefix_ << "\t" << gen(v.v_.send_same()) << ",\n"\r
 159                 << v.line_prefix_ << "\t" << gen(v.v_.force_send_changed()) << ",\n"\r
 160                 << gen(v.v_.states(), v.line_prefix_ + '\t') << ",\n"\r
 161                 << v.line_prefix_ << '\t' << gen(v.v_.writable()) << ",\n"\r
 162                 << v.line_prefix_ << '\t' << (v.v_.decoder().size() ? v.v_.decoder() : v.v_.states().size() ? "decoder_t::decode_state" : "nullptr") << ",\n"\r
 163                 << v.line_prefix_ << '\t' << (v.v_.encoder().size() ? v.v_.encoder() : "nullptr") << ",\n"\r
 164                 << v.line_prefix_ << '\t' << "false\n"\r
 165                 << v.line_prefix_ << "})}";\r
 166         return o;\r
 167 }\r
 168 \r
 169 template <>\r
 170 std::ostream& operator<<(std::ostream& o, const generator<openxc::can_message>& v)\r
 171 {\r
 172         o       << v.line_prefix_\r
 173                 << "{std::make_shared<can_message_definition_t>(can_message_definition_t{"\r
 174                 << gen(v.v_.bus()) << ","\r
 175                 << v.v_.id() << ","\r
 176                 << v.v_.is_fd() << ","\r
 177                 << "can_message_format_t::STANDARD,"\r
 178                 << "frequency_clock_t(" << gen(v.v_.max_frequency()) << "),"\r
 179                 << gen(v.v_.force_send_changed()) << ",\n";\r
 180                 std::uint32_t index = 0;\r
 181         o       << "\t\t\t\t\t{ // beginning can_signals vector\n";\r
 182                         std::uint32_t signal_count = (uint32_t)v.v_.signals().size();\r
 183                         for(const openxc::signal& s : v.v_.signals())\r
 184                         {\r
 185         o                       << gen(s, index,"\t\t\t\t\t\t");\r
 186                                 if (signal_count > 1) o << ',';\r
 187                                 --signal_count;\r
 188         o                       << '\n';\r
 189                         }\r
 190         o       << "\t\t\t\t\t} // end can_signals vector\n"\r
 191                 << "\t\t\t\t})} // end can_message_definition entry\n";\r
 192         return o;\r
 193 }\r
 194 \r
 195 template <>\r
 196 std::ostream& operator<<(std::ostream& o, const generator<openxc::diagnostic_message>& v)\r
 197 {\r
 198         o       << v.line_prefix_ << "{std::make_shared<diagnostic_message_t>(diagnostic_message_t{\n"\r
 199                 << v.line_prefix_ << "\t" << v.v_.pid() << ",\n"\r
 200                 << v.line_prefix_ << "\t" << gen(v.v_.name()) << ",\n"\r
 201                 << v.line_prefix_ << "\t" << 0 << ",\n"\r
 202                 << v.line_prefix_ << "\t" << 0 << ",\n"\r
 203                 << v.line_prefix_ << "\t" << "UNIT::INVALID" << ",\n"\r
 204                 << v.line_prefix_ << "\t" << gen(v.v_.frequency()) << ",\n"\r
 205                 << v.line_prefix_ << "\t" << (v.v_.decoder().size() ? v.v_.decoder() : "nullptr") << ",\n"\r
 206                 << v.line_prefix_ << "\t" << (v.v_.callback().size() ? v.v_.callback() : "nullptr") << ",\n"\r
 207                 << v.line_prefix_ << "\t" << "true" << ",\n"\r
 208                 << v.line_prefix_ << "\t" << "false" << "\n"\r
 209                 << v.line_prefix_ << "})}\n";\r
 210         return o;\r
 211 }\r
 212 \r
 213 /// @brief Generate the application code.\r
 214 /// @param[in] header Content to be inserted as a header.\r
 215 /// @param[in] footer Content to be inserted as a footer.\r
 216 /// @param[in] message_set application read from the json file.\r
 217 /// @param[in] out Stream to write on.\r
 218 void generate(const std::string& header, const std::string& footer, const openxc::message_set& message_set, std::ostream& out)\r
 219 {\r
 220         out << "#include \"application.hpp\"\n"\r
 221                 << "#include \"../can/can-decoder.hpp\"\n"\r
 222                 << "#include \"../can/can-encoder.hpp\"\n\n";\r
 223 \r
 224         if (header.size()) out << header << "\n";\r
 225 \r
 226         out     << "application_t::application_t()\n"\r
 227                 << "    : can_bus_manager_{utils::config_parser_t{\"/etc/dev-mapping.conf\"}}\n"\r
 228                 << "    , can_message_set_{\n"\r
 229                 << gen(message_set, "\t\t")\r
 230                 << "\t} // end can_message_set vector\n"\r
 231                 << "{\n"\r
 232                 << "    for(auto& cms: can_message_set_)\n"\r
 233                 << "    {\n"\r
 234                 << "            std::vector<std::shared_ptr<can_message_definition_t> >& can_messages_definition = cms->get_can_message_definition();\n"\r
 235                 << "            for(auto& cmd : can_messages_definition)\n"\r
 236                 << "            {\n"\r
 237                 << "                    cmd->set_parent(cms.get());\n"\r
 238                 << "                    std::vector<std::shared_ptr<can_signal_t> >& can_signals = cmd->get_can_signals();\n"\r
 239                 << "                    for(auto& sig: can_signals)\n"\r
 240                 << "                    {\n"\r
 241                 << "                            sig->set_parent(cmd.get());\n"\r
 242                 << "                    }\n"\r
 243                 << "            }\n\n"\r
 244                 << "            std::vector<std::shared_ptr<diagnostic_message_t> >& diagnostic_messages = cms->get_diagnostic_messages();\n"\r
 245                 << "            for(auto& dm : diagnostic_messages)\n"\r
 246                 << "            {\n"\r
 247                 << "                    dm->set_parent(cms.get());\n"\r
 248                 << "            }\n"\r
 249                 << "    }\n"\r
 250                 << "            }\n\n"\r
 251                 << "const std::string application_t::get_diagnostic_bus() const\n"\r
 252                 << "{\n";\r
 253 \r
 254                 std::string active_bus = "";\r
 255                 for (const auto& d : message_set.diagnostic_messages())\r
 256                 {\r
 257                         if (d.bus().size() == 0) std::cerr << "ERROR: The bus name should be set for each diagnostic message." << std::endl;\r
 258                         if (active_bus.size() == 0) active_bus = d.bus();\r
 259                         if (active_bus != d.bus()) std::cerr << "ERROR: The bus name should be the same for each diagnostic message." << std::endl;\r
 260                 }\r
 261 \r
 262         out     << "\treturn " << gen(active_bus) << ";\n"\r
 263                 << "}\n\n";\r
 264         out     << footer << std::endl;\r
 265 }\r
 266 \r
 267 /// @brief Read whole file content to a string.\r
 268 /// @param[in] file Path to the file.\r
 269 /// @return A std::string which contains the file content. If @c file is an empty string, the return value is also empty.\r
 270 /// @exception std::runtime_error Throw this exception if the specified file is not found or cannot be opened.\r
 271 std::string read_file(const std::string& file)\r
 272 {\r
 273         if(file.size() == 0) return std::string();\r
 274 \r
 275         std::string content;\r
 276         std::ifstream stream(file);\r
 277         if (stream)\r
 278         {\r
 279                 stream.seekg(0, std::ios::end);\r
 280                 content.reserve(stream.tellg());\r
 281                 stream.seekg(0, std::ios::beg);\r
 282                 content.assign((std::istreambuf_iterator<char>(stream)), std::istreambuf_iterator<char>());\r
 283                 return content;\r
 284         }\r
 285         std::stringstream ss;\r
 286         ss << "The specified file (" << file << ") is not found!";\r
 287         throw std::runtime_error(ss.str());\r
 288 }\r
 289 \r
 290 /// @brief Read whole file content as a json document.\r
 291 /// @param[in] file Path to the file.\r
 292 /// @return A @c nlohmann::json object.\r
 293 /// @exception std::runtime_error Throw this exception if the specified file is not found or cannot be opened.\r
 294 nlohmann::json read_json(const std::string& file)\r
 295 {\r
 296         std::ifstream stream(file);\r
 297         if (stream)\r
 298         {\r
 299                 nlohmann::json result;\r
 300                 stream >> result;\r
 301                 return result;\r
 302         }\r
 303         std::stringstream ss;\r
 304         ss << "The specified file (" << file << ") is not found!";\r
 305         throw std::runtime_error(ss.str());\r
 306 }\r
 307 \r
 308 // function that show the help information\r
 309 void showhelpinfo(char *s)\r
 310 {\r
 311 std::cout<<"Usage:   "<<s<<" <-m inpout.json> [-o application-generated.cpp]"<< std::endl;\r
 312 std::cout<<"option:  "<<"-m  input.json : JSON file describing CAN messages and signals"<< std::endl;\r
 313 std::cout<<"         "<<"-h header.cpp : header source file insert at the beginning of generated file"<< std::endl;\r
 314 std::cout<<"         "<<"-f footer.cpp : footer source file append to generated file."<< std::endl;\r
 315 std::cout<<"         "<<"-o application-generated.cpp : output source file. Name has to be application-generated.cpp"<< std::endl;\r
 316 }\r
 317 \r
 318 /// @brief Entry point.\r
 319 /// @param[in] argc Argument's count.\r
 320 /// @param[in] argv Argument's array.\r
 321 /// @return Exit code, zero if success.\r
 322 int main(int argc, char *argv[])\r
 323 {\r
 324         try\r
 325         {\r
 326                 std::string appName = argv[0];\r
 327                 std::string message_set_file;\r
 328                 std::string output_file;\r
 329                 std::string header_file;\r
 330                 std::string footer_file;\r
 331 \r
 332                 char tmp;\r
 333                 /*if the program is ran witout options ,it will show the usgage and exit*/\r
 334                 if(argc == 1)\r
 335                 {\r
 336                         showhelpinfo(argv[0]);\r
 337                         exit(1);\r
 338                 }\r
 339                 /*use function getopt to get the arguments with option."hu:p:s:v" indicate\r
 340                 that option h,v are the options without arguments while u,p,s are the\r
 341                 options with arguments*/\r
 342                 while((tmp=(char)getopt(argc,argv,"m:h:f:o:"))!=-1)\r
 343                 {\r
 344                         switch(tmp)\r
 345                         {\r
 346                         case 'h':\r
 347                                 header_file = optarg;\r
 348                                 break;\r
 349                         case 'f':\r
 350                                 footer_file = optarg;\r
 351                                 break;\r
 352                         case 'm':\r
 353                                 message_set_file = optarg;\r
 354                                 break;\r
 355                         case 'o':\r
 356                                 output_file = optarg;\r
 357                                 break;\r
 358                         default:\r
 359                                 showhelpinfo(argv[0]);\r
 360                         break;\r
 361                         }\r
 362                 }\r
 363 \r
 364                 std::stringstream header;\r
 365                 header << read_file(header_file);\r
 366 \r
 367                 std::string footer = read_file(footer_file);\r
 368                 openxc::message_set message_set;\r
 369                 message_set.from_json(read_json(message_set_file));\r
 370 \r
 371                 std::string message_set_path = dirname(strdup(message_set_file.c_str()));\r
 372                 for(const auto& s : message_set.extra_sources())\r
 373                 {\r
 374                         std::string extra_source = s;\r
 375                         extra_source = message_set_path + "/" + extra_source;\r
 376                         header << "\n// >>>>> " << s << " >>>>>\n" << read_file(extra_source) << "\n// <<<<< " << s << " <<<<<\n";\r
 377                 }\r
 378 \r
 379                 std::ofstream out;\r
 380                 if (output_file.size())\r
 381                 {\r
 382                         out.open(output_file);\r
 383                         if(!out)\r
 384                         {\r
 385                                 std::stringstream ss;\r
 386                                 ss << "Can't open the ouput file (" << output_file << ") for writing!";\r
 387                                 throw std::runtime_error(ss.str());\r
 388                         }\r
 389                 }\r
 390                 generate(header.str(), footer, message_set, output_file.size() ? out : std::cout);\r
 391         }\r
 392         catch (std::exception& e)\r
 393         {\r
 394                 std::cerr << "ERROR: Unhandled exception - " << e.what() << std::endl;\r
 395                 return EXIT_UNKNOWN_ERROR;\r
 396         }\r
 397         return EXIT_SUCCESS;\r
 398 }\r