source/libr2c2/centralstation.cpp

   1 #include <algorithm>
   2 #include <msp/core/refptr.h>
   3 #include <msp/io/print.h>
   4 #include <msp/net/resolve.h>
   5 #include <msp/strings/utils.h>
   6 #include <msp/time/units.h>
   7 #include <msp/time/utils.h>
   8 #include "centralstation.h"
   9 #include "tracktype.h"
  10 #include "vehicletype.h"
  11
  12 using namespace std;
  13 using namespace Msp;
  14
  15 namespace R2C2 {
  16
  17 CentralStation::CentralStation(const string &host):
  18         socket(Net::INET),
  19         pending_commands(0),
  20         power(false),
  21         halted(false),
  22         locos_synced(false),
  23         turnouts_synced(false),
  24         sensors_synced(false)
  25 {
  26         RefPtr<Net::SockAddr> addr = Net::resolve(host+":15471");
  27         socket.connect(*addr);
  28
  29         IO::print("Connected to central station at %s\n", addr->str());
  30
  31         command("get(1, status)");
  32         command("request(1, view)");
  33         command("queryObjects(10, addr, name)");
  34         command("queryObjects(11, addr)");
  35         command("queryObjects(26)");
  36 }
  37
  38 CentralStation::~CentralStation()
  39 {
  40         command("release(1, view)", true);
  41         for(LocoMap::iterator i=locos.begin(); (i!=locos.end() && !(i->first&0x10000)); ++i)
  42                 command(format("release(%d, view, control)", i->first));
  43         for(TurnoutMap::iterator i=turnouts.begin(); (i!=turnouts.end() && !(i->first&0x10000)); ++i)
  44                 command(format("release(%d, view, control)", i->first));
  45         while(IO::poll(socket, IO::P_INPUT, 100*Time::msec))
  46                 while(receive()) ;
  47 }
  48
  49 void CentralStation::set_power(bool p)
  50 {
  51         power = p;
  52         command(format("set(1, %s)", (power ? "go" : "stop")));
  53 }
  54
  55 void CentralStation::halt(bool h)
  56 {
  57         halted = h;
  58         if(halted)
  59         {
  60                 for(LocoMap::iterator i=locos.begin(); i!=locos.end(); ++i)
  61                         if(i->second.speed)
  62                                 set_loco_speed(i->first, 0);
  63         }
  64
  65         signal_halt.emit(halted);
  66 }
  67
  68 const char *CentralStation::enumerate_protocols(unsigned index) const
  69 {
  70         if(index==MM)
  71                 return "MM";
  72         else if(index==MM_27)
  73                 return "MM-27";
  74         else if(index==MFX)
  75                 return "MFX";
  76         else
  77                 return 0;
  78 }
  79
  80 unsigned CentralStation::get_protocol_speed_steps(const string &name) const
  81 {
  82         switch(map_protocol(name))
  83         {
  84         case MM: return 14;
  85         case MM_27: return 27;
  86         case MFX: return 126;
  87         default: return 0;
  88         }
  89 }
  90
  91 void CentralStation::add_loco(unsigned addr, const string &proto_name, const VehicleType &type)
  92 {
  93         Protocol proto = map_protocol(proto_name);
  94
  95         unsigned id = map_address(locos, loco_addr, addr);
  96         if(!id)
  97         {
  98                 Locomotive &loco = locos[addr|0x10000];
  99                 loco.name = type.get_name();
 100                 loco.protocol = proto;
 101                 loco.address = addr;
 102
 103                 const VehicleType::FunctionMap &type_funcs = type.get_functions();
 104                 for(VehicleType::FunctionMap::const_iterator i=type_funcs.begin(); i!=type_funcs.end(); ++i)
 105                         loco.func_mask |= 1<<i->first;
 106
 107                 if(locos_synced && proto!=MFX)
 108                         command("create(10)");
 109         }
 110         else
 111                 command(format("request(%d, view, control, force)", id));
 112 }
 113
 114 void CentralStation::set_loco_speed(unsigned addr, unsigned speed)
 115 {
 116         if(speed && halted)
 117                 return;
 118
 119         unsigned id = map_address(locos, loco_addr, addr);
 120         if(id)
 121         {
 122                 Locomotive &loco = locos[id];
 123                 if(loco.protocol==MFX && speed)
 124                         ++speed;
 125                 command(format("set(%d, speedstep[%d])", id, speed));
 126         }
 127 }
 128
 129 void CentralStation::set_loco_reverse(unsigned addr, bool rev)
 130 {
 131         unsigned id = map_address(locos, loco_addr, addr);
 132         if(id)
 133                 command(format("set(%d, dir[%d])", id, rev));
 134 }
 135
 136 void CentralStation::set_loco_function(unsigned addr, unsigned func, bool state)
 137 {
 138         unsigned id = map_address(locos, loco_addr, addr);
 139         if(id)
 140                 command(format("set(%d, func[%d, %d])", id, func, state));
 141 }
 142
 143 void CentralStation::add_turnout(unsigned addr, const TrackType &type)
 144 {
 145         unsigned straight = type.get_paths();
 146         bool left = false;
 147         bool right = false;
 148         bool cross = false;
 149
 150         const vector<TrackPart> &parts = type.get_parts();
 151         for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 152         {
 153                 TrackPoint start = i->get_point(0);
 154                 TrackPoint end = i->get_point(i->get_length());
 155                 if(end.dir>start.dir+0.01 || end.dir<start.dir-0.01)
 156                 {
 157                         (end.dir>start.dir ? left : right) = true;
 158                         straight &= ~(1<<i->get_path());
 159                 }
 160                 else if(start.dir<-0.01 || start.dir>0.01)
 161                         cross = true;
 162         }
 163
 164         unsigned symbol = Turnout::LEFT;
 165         if(cross)
 166                 symbol = Turnout::DOUBLESLIP;
 167         else if(left && right)
 168                 symbol = Turnout::THREEWAY;
 169         else if(left)
 170                 symbol = (straight ? Turnout::LEFT : Turnout::CURVED_LEFT);
 171         else if(right)
 172                 symbol = (straight ? Turnout::RIGHT : Turnout::CURVED_RIGHT);
 173
 174         unsigned id = map_address(turnouts, turnout_addr, addr);
 175         if(!id)
 176         {
 177                 id = addr|0x10000;
 178
 179                 Turnout &turnout = turnouts[id];
 180                 turnout.address = addr;
 181                 turnout.bits = type.get_state_bits();
 182                 turnout.symbol = symbol;
 183
 184                 turnout_addr[addr] = id;
 185
 186                 if(turnouts_synced)
 187                         command("create(11, append)");
 188         }
 189         else
 190         {
 191                 Turnout &turnout = turnouts[id];
 192                 command(format("request(%d, view, control)", id));
 193                 if(turnout.symbol!=symbol)
 194                         command(format("set(%d, symbol[%d])", symbol));
 195         }
 196 }
 197
 198 void CentralStation::set_turnout(unsigned addr, unsigned state)
 199 {
 200         unsigned id = map_address(turnouts, turnout_addr, addr);
 201         if(id)
 202         {
 203                 Turnout &turnout = turnouts[id];
 204                 unsigned mask = (1<<turnout.bits)-1;
 205
 206                 if(((state^turnout.state)&mask)==0 || !turnout.synced)
 207                 {
 208                         turnout.state = state;
 209                         signal_turnout.emit(addr, turnout.state);
 210                         return;
 211                 }
 212
 213                 turnout.state = (turnout.state&mask) | (state&~mask);
 214
 215                 command(format("set(%d, state[%d])", id, state&mask));
 216         }
 217 }
 218
 219 unsigned CentralStation::get_turnout(unsigned addr) const
 220 {
 221         unsigned id = map_address(turnouts, turnout_addr, addr);
 222         if(id)
 223         {
 224                 TurnoutMap::const_iterator i = turnouts.find(id);
 225                 if(i!=turnouts.end())
 226                         return i->second.state;
 227         }
 228         return 0;
 229 }
 230
 231 void CentralStation::add_sensor(unsigned addr)
 232 {
 233         sensors.insert(SensorMap::value_type(addr, Sensor()));
 234
 235         if(sensors_synced)
 236         {
 237                 if(addr>s88.size()*16)
 238                         command("create(26, add[0])");
 239         }
 240 }
 241
 242 bool CentralStation::get_sensor(unsigned addr) const
 243 {
 244         SensorMap::const_iterator i = sensors.find(addr);
 245         if(i!=sensors.end())
 246                 return i->second.state;
 247         return false;
 248 }
 249
 250 void CentralStation::tick()
 251 {
 252         while(Message msg = receive())
 253         {
 254                 if(msg.footer.code)
 255                         IO::print("\033[31m*** ERROR: %s: %d %s ***\033[0m\n", msg.header.value, msg.footer.code, msg.footer.value);
 256
 257                 if(msg.header.type=="REPLY")
 258                         process_reply(msg);
 259                 else if(msg.header.type=="EVENT")
 260                         process_event(msg);
 261         }
 262 }
 263
 264 void CentralStation::flush()
 265 {
 266 }
 267
 268 void CentralStation::command(const string &cmd, bool force)
 269 {
 270         if(pending_commands<10 || force)
 271         {
 272                 socket.write(cmd+"\r\n");
 273                 ++pending_commands;
 274         }
 275         else
 276                 cmd_queue.push_back(cmd);
 277 }
 278
 279 CentralStation::Message CentralStation::receive()
 280 {
 281         while(IO::poll(socket, IO::P_INPUT, Time::zero))
 282         {
 283                 char rbuf[1024];
 284                 unsigned len = socket.read(rbuf, sizeof(rbuf));
 285                 if(!len)
 286                         return Message();
 287
 288                 in_buffer.append(rbuf, len);
 289         }
 290
 291         if(!in_buffer.empty())
 292         {
 293                 string::iterator iter = in_buffer.begin();
 294                 if(Message msg = parse_message(iter, in_buffer.end()))
 295                 {
 296                         skip(iter, in_buffer.end(), "\r\n");
 297                         in_buffer.erase(in_buffer.begin(), iter);
 298
 299                         if(msg.header.type=="REPLY" && pending_commands>0)
 300                         {
 301                                 --pending_commands;
 302                                 if(!cmd_queue.empty())
 303                                 {
 304                                         command(cmd_queue.front());
 305                                         cmd_queue.pop_front();
 306                                 }
 307                         }
 308
 309                         return msg;
 310                 }
 311         }
 312
 313         return Message();
 314 }
 315
 316 void CentralStation::process_reply(const Message &msg)
 317 {
 318         if(!msg.header.value.compare(0, 4, "get("))
 319         {
 320                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 321                 {
 322                         if(turnouts.count(i->first))
 323                                 turnouts[i->first].synced = true;
 324
 325                         process_object(i->first, i->second);
 326                 }
 327         }
 328         else if(!msg.header.value.compare(0, 16, "queryObjects(10,"))
 329         {
 330                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 331                 {
 332                         LocoMap::iterator j = locos.find(i->first);
 333                         if(j==locos.end())
 334                         {
 335                                 bool found = false;
 336                                 Message::AttribMap::const_iterator k = i->second.find("addr");
 337                                 if(k!=i->second.end())
 338                                 {
 339                                         unsigned addr = lexical_cast<unsigned>(k->second);
 340
 341                                         j = locos.find(addr|0x10000);
 342                                         if(j!=locos.end())
 343                                         {
 344                                                 command(format("request(%d, view, control, force)", i->first));
 345                                                 string cmd = format("get(%d, dir", i->first);
 346                                                 for(unsigned l=0; j->second.func_mask>>l; ++l)
 347                                                         if((j->second.func_mask>>l)&1)
 348                                                                 cmd += format(", func[%d]", l);
 349                                                 cmd += ')';
 350                                                 command(cmd);
 351
 352                                                 locos.insert(LocoMap::value_type(i->first, j->second));
 353                                                 locos.erase(j);
 354
 355                                                 found = true;
 356                                         }
 357                                 }
 358
 359                                 if(!found)
 360                                         locos.insert(LocoMap::value_type(i->first, Locomotive()));
 361                         }
 362
 363                         process_object(i->first, i->second);
 364                 }
 365
 366                 locos_synced = true;
 367
 368                 if(locos.lower_bound(0x10000)!=locos.end())
 369                         command("create(10)");
 370         }
 371         else if(!msg.header.value.compare(0, 16, "queryObjects(11,"))
 372         {
 373                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 374                 {
 375                         TurnoutMap::iterator j = turnouts.find(i->first);
 376                         if(j==turnouts.end())
 377                         {
 378                                 bool found = false;
 379                                 Message::AttribMap::const_iterator k = i->second.find("addr");
 380                                 if(k!=i->second.end())
 381                                 {
 382                                         unsigned addr = lexical_cast<unsigned>(k->second);
 383
 384                                         j = turnouts.find(addr|0x10000);
 385                                         if(j!=turnouts.end())
 386                                         {
 387                                                 command(format("request(%d, view, control)", i->first));
 388                                                 command(format("set(%d, symbol[%d])", i->first, j->second.symbol));
 389                                                 command(format("get(%d, state)", i->first));
 390
 391                                                 turnouts.insert(TurnoutMap::value_type(i->first, j->second));
 392                                                 turnouts.erase(j);
 393
 394                                                 found = true;
 395                                         }
 396                                 }
 397
 398                                 if(!found)
 399                                         turnouts.insert(TurnoutMap::value_type(i->first, Turnout()));
 400                         }
 401
 402                         process_object(i->first, i->second);
 403                 }
 404
 405                 turnouts_synced = true;
 406
 407                 for(TurnoutMap::const_iterator i=turnouts.lower_bound(0x10000); i!=turnouts.end(); ++i)
 408                         command("create(11, append)");
 409         }
 410         else if(msg.header.value=="queryObjects(26)")
 411         {
 412                 s88.clear();
 413                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 414                 {
 415                         s88.push_back(i->first);
 416                         command(format("request(%d, view)", i->first));
 417                         command(format("get(%d, state)", i->first));
 418                 }
 419
 420                 sensors_synced = true;
 421
 422                 if(!sensors.empty())
 423                 {
 424                         unsigned high_addr = (--sensors.end())->first;
 425                         if(high_addr>16*s88.size())
 426                                 command("create(26, add[0])");
 427                 }
 428         }
 429         else if(msg.header.value=="create(10)")
 430         {
 431                 Message::ObjectMap::const_iterator i = msg.content.find(10);
 432                 if(i!=msg.content.end())
 433                 {
 434                         Message::AttribMap::const_iterator j = i->second.find("id");
 435                         if(j!=i->second.end())
 436                         {
 437                                 unsigned id = lexical_cast<unsigned>(j->second);
 438                                 LocoMap::iterator k = locos.lower_bound(0x10000);
 439                                 if(k!=locos.end())
 440                                 {
 441                                         command(format("request(%d, view, control)", id));
 442                                         command(format("set(%d, addr[%d], protocol[%s], name[\"%s\"])",
 443                                                 id, k->second.address, (k->second.protocol==MM_27 ? "MM27" : "MM14"), k->second.name));
 444                                         command("create(10, append)");
 445
 446                                         locos.insert(LocoMap::value_type(id, k->second));
 447                                         locos.erase(k);
 448                                 }
 449                         }
 450                 }
 451
 452                 if(locos.lower_bound(0x10000)!=locos.end())
 453                         command("create(10)");
 454         }
 455         else if(!msg.header.value.compare(0, 10, "create(11,"))
 456         {
 457                 Message::ObjectMap::const_iterator i = msg.content.find(11);
 458                 if(i!=msg.content.end())
 459                 {
 460                         Message::AttribMap::const_iterator j = i->second.find("id");
 461                         if(j!=i->second.end())
 462                         {
 463                                 unsigned id = lexical_cast<unsigned>(j->second);
 464                                 TurnoutMap::iterator k = turnouts.lower_bound(0x10000);
 465                                 if(k!=turnouts.end())
 466                                 {
 467                                         command(format("request(%d, view, control)", id));
 468                                         command(format("set(%d, addr[%d], symbol[%d], name1[\"Switch\"], name2[\"%d\"], name3[\"\"])",
 469                                                 id, k->second.address, k->second.symbol, k->second.address));
 470                                         command(format("set(%d, state[%d])", id, k->second.state&((1<<k->second.bits)-1)));
 471
 472                                         k->second.synced = true;
 473                                         turnouts.insert(TurnoutMap::value_type(id, k->second));
 474                                         turnouts.erase(k);
 475                                 }
 476                         }
 477                 }
 478         }
 479         else if(!msg.header.value.compare(0, 10, "create(26,"))
 480                 command("queryObjects(26)");
 481 }
 482
 483 void CentralStation::process_event(const Message &msg)
 484 {
 485         for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 486                 process_object(i->first, i->second);
 487 }
 488
 489 void CentralStation::process_object(unsigned id, const Message::AttribMap &attribs)
 490 {
 491         if(id==1)
 492         {
 493                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 494                         if(i->first=="status")
 495                         {
 496                                 power = (i->second=="GO");
 497                                 signal_power.emit(power);
 498                         }
 499         }
 500         else if(locos.count(id))
 501         {
 502                 Locomotive &loco = locos[id];
 503                 bool speed_changed = false;
 504                 unsigned funcs_changed = 0;
 505                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 506                 {
 507                         if(i->first=="name")
 508                                 loco.name = i->second.substr(1, i->second.size()-2);
 509                         else if(i->first=="addr")
 510                         {
 511                                 loco_addr.erase(loco.address);
 512                                 loco.address = lexical_cast<unsigned>(i->second);
 513                                 loco_addr[loco.address] = id;
 514                         }
 515                         else if(i->first=="protocol")
 516                         {
 517                                 if(i->second=="MM")
 518                                         loco.protocol = MM;
 519                                 else if(i->second=="MM27")
 520                                         loco.protocol = MM_27;
 521                                 else if(i->second=="MFX")
 522                                         loco.protocol = MFX;
 523                         }
 524                         else if(i->first=="speedstep")
 525                         {
 526                                 loco.speed = lexical_cast<unsigned>(i->second);
 527                                 if(loco.protocol==MFX && loco.speed)
 528                                         --loco.speed;
 529                                 speed_changed = true;
 530                         }
 531                         else if(i->first=="dir")
 532                         {
 533                                 loco.reverse = i->second[0]!='0';
 534                                 speed_changed = true;
 535                         }
 536                         else if(i->first=="func")
 537                         {
 538                                 vector<string> parts = split(i->second, ", ");
 539                                 unsigned func = lexical_cast<unsigned>(parts[0]);
 540                                 bool value = lexical_cast<unsigned>(parts[1]);
 541                                 loco.funcs &= ~(1<<func);
 542                                 if(value)
 543                                         loco.funcs |= 1<<func;
 544                                 funcs_changed |= 1<<func;
 545                         }
 546                         else if(i->first=="msg")
 547                         {
 548                                 if(i->second=="CONTROL_LOST")
 549                                         command(format("request(%d, control, force)", id));
 550                         }
 551                 }
 552
 553                 if(speed_changed)
 554                         signal_loco_speed.emit(loco.address, loco.speed, loco.reverse);
 555                 for(unsigned i=0; funcs_changed>>i; ++i)
 556                         if(funcs_changed&(1<<i))
 557                                 signal_loco_function.emit(loco.address, i, loco.funcs&(1<<i));
 558         }
 559         else if(turnouts.count(id))
 560         {
 561                 Turnout &turnout = turnouts[id];
 562                 bool state_changed = false;
 563                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 564                 {
 565                         if(i->first=="addr")
 566                         {
 567                                 turnout_addr.erase(turnout.address);
 568                                 turnout.address = lexical_cast<unsigned>(i->second);
 569                                 turnout_addr[turnout.address] = id;
 570                         }
 571                         else if(i->first=="state")
 572                         {
 573                                 unsigned state = lexical_cast<unsigned>(i->second);
 574                                 unsigned mask = (1<<turnout.bits)-1;
 575                                 turnout.state = (turnout.state&~mask) | (state&mask);
 576                                 state_changed = true;
 577                         }
 578                 }
 579
 580                 if(state_changed)
 581                         signal_turnout.emit(turnout.address, turnout.state);
 582         }
 583         else if(find(s88.begin(), s88.end(), id)!=s88.end())
 584         {
 585                 unsigned base = 0;
 586                 for(; (base<s88.size() && s88[base]!=id); ++base) ;
 587
 588                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 589                 {
 590                         if(i->first=="state")
 591                         {
 592                                 unsigned state = lexical_cast<unsigned>(i->second, "%i");
 593                                 for(unsigned j=0; j<16; ++j)
 594                                 {
 595                                         unsigned addr = base*16+j+1;
 596                                         Sensor &sensor = sensors[addr];
 597                                         bool s = state&(1<<j);
 598                                         if(s!=sensor.state)
 599                                         {
 600                                                 sensor.state = s;
 601                                                 signal_sensor.emit(addr, sensor.state);
 602                                         }
 603                                 }
 604                         }
 605                 }
 606         }
 607 }
 608
 609 CentralStation::Protocol CentralStation::map_protocol(const string &name) const
 610 {
 611         if(name=="MM")
 612                 return MM;
 613         else if(name=="MM-27")
 614                 return MM_27;
 615         else if(name=="MFX")
 616                 return MFX;
 617         else
 618                 throw invalid_argument("CentralStation::map_protocol");
 619 }
 620
 621 template<typename T>
 622 unsigned CentralStation::map_address(const map<unsigned, T> &omap, const AddressMap &amap, unsigned addr) const
 623 {
 624         if(omap.count(addr))
 625                 return addr;
 626         else
 627         {
 628                 AddressMap::const_iterator i = amap.find(addr);
 629                 if(i!=amap.end())
 630                         return i->second;
 631                 else
 632                         return 0;
 633         }
 634 }
 635
 636 void CentralStation::skip(string::iterator &iter, const string::iterator &end, const string &what) const
 637 {
 638         for(; (iter!=end && what.find(*iter)!=string::npos); ++iter) ;
 639 }
 640
 641 string CentralStation::parse_token(string::iterator &iter, const string::iterator &end, const string &stop) const
 642 {
 643         vector<char> parens;
 644         bool quote = false;
 645         string token;
 646
 647         skip(iter, end, stop);
 648
 649         for(; iter!=end; ++iter)
 650         {
 651                 if(stop.find(*iter)!=string::npos && parens.empty() && !quote)
 652                         break;
 653                 else if(*iter=='(' || *iter=='[')
 654                         parens.push_back(*iter);
 655                 else if((*iter==')' || *iter==']') && !parens.empty())
 656                 {
 657                         if((*iter==')' && parens.back()!='(') || (*iter==']' && parens.back()!='['))
 658                                 IO::print("Mismatched parentheses\n");
 659                         parens.pop_back();
 660                 }
 661                 else if(*iter=='"')
 662                         quote = !quote;
 663
 664                 token += *iter;
 665         }
 666
 667         return token;
 668 }
 669
 670 CentralStation::Tag CentralStation::parse_tag(string::iterator &iter, const string::iterator &end) const
 671 {
 672         Tag tag;
 673
 674         for(; (iter!=end && *iter!='<'); ++iter) ;
 675         if(iter==end)
 676                 return Tag();
 677
 678         tag.type = parse_token(++iter, end, " >");
 679         if(tag.type=="END")
 680         {
 681                 string code = parse_token(iter, end, " >");
 682                 tag.code = lexical_cast<unsigned>(code);
 683         }
 684         skip(iter, end, " ");
 685         tag.value = parse_token(iter, end, ">");
 686         if(iter==end)
 687                 return Tag();
 688         ++iter;
 689
 690         return tag;
 691 }
 692
 693 CentralStation::Message CentralStation::parse_message(string::iterator &iter, const string::iterator &end) const
 694 {
 695         Message msg;
 696
 697         msg.header = parse_tag(iter, end);
 698
 699         while(iter!=end)
 700         {
 701                 skip(iter, end, "\r\n");
 702                 if(*iter=='<')
 703                         break;
 704
 705                 string id = parse_token(iter, end, " \r\n<");
 706                 Message::AttribMap &attribs = msg.content[lexical_cast<unsigned>(id)];
 707                 while(iter!=end && *iter!='\n' && *iter!='\r')
 708                 {
 709                         string attr = parse_token(iter, end, " \r\n<");
 710                         string::size_type open_bracket = attr.find('[');
 711                         if(open_bracket!=string::npos)
 712                         {
 713                                 string::size_type close_bracket = attr.rfind(']');
 714                                 string attr_name = attr.substr(0, open_bracket);
 715                                 string attr_value = attr.substr(open_bracket+1, close_bracket-open_bracket-1);
 716                                 attribs.insert(Message::AttribMap::value_type(attr_name, attr_value));
 717                         }
 718                         else
 719                                 attribs.insert(Message::AttribMap::value_type(attr, string()));
 720                 }
 721         }
 722
 723         msg.footer = parse_tag(iter, end);
 724         if(msg.footer.type.empty())
 725                 return Message();
 726
 727         return msg;
 728 }
 729
 730
 731 CentralStation::Tag::Tag():
 732         code(0)
 733 { }
 734
 735 CentralStation::Tag::operator bool() const
 736 {
 737         return !type.empty();
 738 }
 739
 740
 741 CentralStation::Message::operator bool() const
 742 {
 743         return header && footer;
 744 }
 745
 746
 747 CentralStation::Locomotive::Locomotive():
 748         address(0),
 749         speed(0),
 750         reverse(false),
 751         func_mask(0),
 752         funcs(0),
 753         control(false)
 754 { }
 755
 756
 757 CentralStation::Turnout::Turnout():
 758         address(0),
 759         symbol(0),
 760         state(0),
 761         bits(0),
 762         synced(false)
 763 { }
 764
 765
 766 CentralStation::Sensor::Sensor():
 767         state(false)
 768 { }
 769
 770 } // namespace R2C2