source/libr2c2/centralstation.cpp

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2010  Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <algorithm>
   9 #include <msp/core/refptr.h>
  10 #include <msp/io/print.h>
  11 #include <msp/net/resolve.h>
  12 #include <msp/strings/utils.h>
  13 #include <msp/time/units.h>
  14 #include <msp/time/utils.h>
  15 #include "centralstation.h"
  16 #include "tracktype.h"
  17 #include "vehicletype.h"
  18
  19 using namespace std;
  20 using namespace Msp;
  21
  22 namespace R2C2 {
  23
  24 CentralStation::CentralStation(const string &host):
  25         socket(Net::INET),
  26         pending_commands(0),
  27         power(false),
  28         halted(false),
  29         locos_synced(false),
  30         turnouts_synced(false),
  31         sensors_synced(false)
  32 {
  33         RefPtr<Net::SockAddr> addr = Net::resolve(host+":15471");
  34         socket.connect(*addr);
  35
  36         IO::print("Connected to central station at %s\n", addr->str());
  37
  38         command("get(1, status)");
  39         command("request(1, view)");
  40         command("queryObjects(10, addr, name)");
  41         command("queryObjects(11, addr)");
  42         command("queryObjects(26)");
  43 }
  44
  45 CentralStation::~CentralStation()
  46 {
  47         command("release(1, view)", true);
  48         for(LocoMap::iterator i=locos.begin(); (i!=locos.end() && !(i->first&0x10000)); ++i)
  49                 command(format("release(%d, view, control)", i->first));
  50         for(TurnoutMap::iterator i=turnouts.begin(); (i!=turnouts.end() && !(i->first&0x10000)); ++i)
  51                 command(format("release(%d, view, control)", i->first));
  52         while(IO::poll(socket, IO::P_INPUT, 100*Time::msec))
  53                 while(receive()) ;
  54 }
  55
  56 void CentralStation::set_power(bool p)
  57 {
  58         power = p;
  59         command(format("set(1, %s)", (power ? "go" : "stop")));
  60 }
  61
  62 void CentralStation::halt(bool h)
  63 {
  64         halted = h;
  65         if(halted)
  66         {
  67                 for(LocoMap::iterator i=locos.begin(); i!=locos.end(); ++i)
  68                         if(i->second.speed)
  69                                 set_loco_speed(i->first, 0);
  70         }
  71
  72         signal_halt.emit(halted);
  73 }
  74
  75 const char *CentralStation::enumerate_protocols(unsigned index) const
  76 {
  77         if(index==MM)
  78                 return "MM";
  79         else if(index==MM_27)
  80                 return "MM-27";
  81         else if(index==MFX)
  82                 return "MFX";
  83         else
  84                 return 0;
  85 }
  86
  87 unsigned CentralStation::get_protocol_speed_steps(const string &name) const
  88 {
  89         switch(map_protocol(name))
  90         {
  91         case MM: return 14;
  92         case MM_27: return 27;
  93         case MFX: return 126;
  94         default: return 0;
  95         }
  96 }
  97
  98 void CentralStation::add_loco(unsigned addr, const string &proto_name, const VehicleType &type)
  99 {
 100         Protocol proto = map_protocol(proto_name);
 101
 102         unsigned id = map_address(locos, loco_addr, addr);
 103         if(!id)
 104         {
 105                 Locomotive &loco = locos[addr|0x10000];
 106                 loco.name = type.get_name();
 107                 loco.protocol = proto;
 108                 loco.address = addr;
 109
 110                 if(locos_synced && proto!=MFX)
 111                         command("create(10)");
 112         }
 113         else
 114                 command(format("request(%d, view, control, force)", id));
 115 }
 116
 117 void CentralStation::set_loco_speed(unsigned addr, unsigned speed)
 118 {
 119         if(speed && halted)
 120                 return;
 121
 122         unsigned id = map_address(locos, loco_addr, addr);
 123         if(id)
 124         {
 125                 Locomotive &loco = locos[id];
 126                 if(loco.protocol==MFX && speed)
 127                         ++speed;
 128                 command(format("set(%d, speedstep[%d])", id, speed));
 129         }
 130 }
 131
 132 void CentralStation::set_loco_reverse(unsigned addr, bool rev)
 133 {
 134         unsigned id = map_address(locos, loco_addr, addr);
 135         if(id)
 136                 command(format("set(%d, dir[%d])", id, rev));
 137 }
 138
 139 void CentralStation::set_loco_function(unsigned addr, unsigned func, bool state)
 140 {
 141         unsigned id = map_address(locos, loco_addr, addr);
 142         if(id)
 143                 command(format("set(%d, func[%d, %d])", id, func, state));
 144 }
 145
 146 void CentralStation::add_turnout(unsigned addr, const TrackType &type)
 147 {
 148         bool left = false;
 149         bool right = false;
 150         bool cross = false;
 151
 152         const vector<TrackPart> &parts = type.get_parts();
 153         for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 154         {
 155                 TrackPoint start = i->get_point(0);
 156                 TrackPoint end = i->get_point(i->get_length());
 157                 if(end.dir>start.dir+0.01)
 158                         left = true;
 159                 else if(end.dir<start.dir-0.01)
 160                         right = true;
 161                 else if(start.dir<-0.01 || start.dir>0.01)
 162                         cross = true;
 163         }
 164
 165         unsigned symbol = Turnout::LEFT;
 166         if(cross)
 167                 symbol = Turnout::DOUBLESLIP;
 168         else if(left && right)
 169                 symbol = Turnout::THREEWAY;
 170         else if(left)
 171                 symbol = Turnout::LEFT;
 172         else if(right)
 173                 symbol = Turnout::RIGHT;
 174
 175         unsigned id = map_address(turnouts, turnout_addr, addr);
 176         if(!id)
 177         {
 178                 id = addr|0x10000;
 179
 180                 Turnout &turnout = turnouts[id];
 181                 turnout.address = addr;
 182                 turnout.bits = type.get_state_bits();
 183                 turnout.symbol = symbol;
 184
 185                 turnout_addr[addr] = id;
 186
 187                 if(turnouts_synced)
 188                         command("create(11, append)");
 189         }
 190         else
 191         {
 192                 Turnout &turnout = turnouts[id];
 193                 command(format("request(%d, view, control)", id));
 194                 if(turnout.symbol!=symbol)
 195                         command(format("set(%d, symbol[%d])", symbol));
 196         }
 197 }
 198
 199 void CentralStation::set_turnout(unsigned addr, unsigned state)
 200 {
 201         unsigned id = map_address(turnouts, turnout_addr, addr);
 202         if(id)
 203         {
 204                 Turnout &turnout = turnouts[id];
 205                 unsigned mask = (1<<turnout.bits)-1;
 206
 207                 if(((state^turnout.state)&mask)==0 || !turnout.synced)
 208                 {
 209                         turnout.state = state;
 210                         signal_turnout.emit(addr, turnout.state);
 211                         return;
 212                 }
 213
 214                 turnout.state = (turnout.state&mask) | (state&~mask);
 215
 216                 command(format("set(%d, state[%d])", id, state&mask));
 217         }
 218 }
 219
 220 unsigned CentralStation::get_turnout(unsigned addr) const
 221 {
 222         unsigned id = map_address(turnouts, turnout_addr, addr);
 223         if(id)
 224         {
 225                 TurnoutMap::const_iterator i = turnouts.find(id);
 226                 if(i!=turnouts.end())
 227                         return i->second.state;
 228         }
 229         return 0;
 230 }
 231
 232 void CentralStation::add_sensor(unsigned addr)
 233 {
 234         sensors.insert(SensorMap::value_type(addr, Sensor()));
 235
 236         if(sensors_synced)
 237         {
 238                 if(addr>s88.size()*16)
 239                         command("create(26, add[0])");
 240         }
 241 }
 242
 243 bool CentralStation::get_sensor(unsigned addr) const
 244 {
 245         SensorMap::const_iterator i = sensors.find(addr);
 246         if(i!=sensors.end())
 247                 return i->second.state;
 248         return false;
 249 }
 250
 251 void CentralStation::tick()
 252 {
 253         Time::TimeStamp t = Time::now();
 254         for(SensorMap::iterator i=sensors.begin(); i!=sensors.end(); ++i)
 255                 if(i->second.off_timeout && t>i->second.off_timeout)
 256                 {
 257                         i->second.state = false;
 258                         i->second.off_timeout = Time::TimeStamp();
 259                         signal_sensor.emit(i->first, i->second.state);
 260                 }
 261
 262         while(Message msg = receive())
 263         {
 264                 if(msg.footer.code)
 265                         IO::print("\033[31m*** ERROR: %s: %d %s ***\033[0m\n", msg.header.value, msg.footer.code, msg.footer.value);
 266
 267                 if(msg.header.type=="REPLY")
 268                         process_reply(msg);
 269                 else if(msg.header.type=="EVENT")
 270                         process_event(msg);
 271         }
 272 }
 273
 274 void CentralStation::flush()
 275 {
 276 }
 277
 278 void CentralStation::command(const string &cmd, bool force)
 279 {
 280         if(pending_commands<10 || force)
 281         {
 282                 socket.write(cmd+"\r\n");
 283                 ++pending_commands;
 284         }
 285         else
 286                 cmd_queue.push_back(cmd);
 287 }
 288
 289 CentralStation::Message CentralStation::receive()
 290 {
 291         while(IO::poll(socket, IO::P_INPUT, Time::zero))
 292         {
 293                 char rbuf[1024];
 294                 unsigned len = socket.read(rbuf, sizeof(rbuf));
 295                 if(!len)
 296                         return Message();
 297
 298                 in_buffer.append(rbuf, len);
 299         }
 300
 301         if(!in_buffer.empty())
 302         {
 303                 string::iterator iter = in_buffer.begin();
 304                 if(Message msg = parse_message(iter, in_buffer.end()))
 305                 {
 306                         skip(iter, in_buffer.end(), "\r\n");
 307                         in_buffer.erase(in_buffer.begin(), iter);
 308
 309                         if(msg.header.type=="REPLY" && pending_commands>0)
 310                         {
 311                                 --pending_commands;
 312                                 if(!cmd_queue.empty())
 313                                 {
 314                                         command(cmd_queue.front());
 315                                         cmd_queue.pop_front();
 316                                 }
 317                         }
 318
 319                         return msg;
 320                 }
 321         }
 322
 323         return Message();
 324 }
 325
 326 void CentralStation::process_reply(const Message &msg)
 327 {
 328         if(!msg.header.value.compare(0, 4, "get("))
 329         {
 330                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 331                 {
 332                         if(turnouts.count(i->first))
 333                                 turnouts[i->first].synced = true;
 334
 335                         process_object(i->first, i->second);
 336                 }
 337         }
 338         else if(!msg.header.value.compare(0, 16, "queryObjects(10,"))
 339         {
 340                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 341                 {
 342                         LocoMap::iterator j = locos.find(i->first);
 343                         if(j==locos.end())
 344                         {
 345                                 bool found = false;
 346                                 Message::AttribMap::const_iterator k = i->second.find("addr");
 347                                 if(k!=i->second.end())
 348                                 {
 349                                         unsigned addr = lexical_cast<unsigned>(k->second);
 350
 351                                         j = locos.find(addr|0x10000);
 352                                         if(j!=locos.end())
 353                                         {
 354                                                 command(format("request(%d, view, control, force)", i->first));
 355                                                 command(format("get(%d, dir, func[0])", i->first));
 356
 357                                                 locos.insert(LocoMap::value_type(i->first, j->second));
 358                                                 locos.erase(j);
 359
 360                                                 found = true;
 361                                         }
 362                                 }
 363
 364                                 if(!found)
 365                                         locos.insert(LocoMap::value_type(i->first, Locomotive()));
 366                         }
 367
 368                         process_object(i->first, i->second);
 369                 }
 370
 371                 locos_synced = true;
 372
 373                 if(locos.lower_bound(0x10000)!=locos.end())
 374                         command("create(10)");
 375         }
 376         else if(!msg.header.value.compare(0, 16, "queryObjects(11,"))
 377         {
 378                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 379                 {
 380                         TurnoutMap::iterator j = turnouts.find(i->first);
 381                         if(j==turnouts.end())
 382                         {
 383                                 bool found = false;
 384                                 Message::AttribMap::const_iterator k = i->second.find("addr");
 385                                 if(k!=i->second.end())
 386                                 {
 387                                         unsigned addr = lexical_cast<unsigned>(k->second);
 388
 389                                         j = turnouts.find(addr|0x10000);
 390                                         if(j!=turnouts.end())
 391                                         {
 392                                                 command(format("request(%d, view, control)", i->first));
 393                                                 command(format("set(%d, symbol[%d])", i->first, j->second.symbol));
 394                                                 command(format("get(%d, state)", i->first));
 395
 396                                                 turnouts.insert(TurnoutMap::value_type(i->first, j->second));
 397                                                 turnouts.erase(j);
 398
 399                                                 found = true;
 400                                         }
 401                                 }
 402
 403                                 if(!found)
 404                                         turnouts.insert(TurnoutMap::value_type(i->first, Turnout()));
 405                         }
 406
 407                         process_object(i->first, i->second);
 408                 }
 409
 410                 turnouts_synced = true;
 411
 412                 for(TurnoutMap::const_iterator i=turnouts.lower_bound(0x10000); i!=turnouts.end(); ++i)
 413                         command("create(11, append)");
 414         }
 415         else if(msg.header.value=="queryObjects(26)")
 416         {
 417                 s88.clear();
 418                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 419                 {
 420                         s88.push_back(i->first);
 421                         command(format("request(%d, view)", i->first));
 422                 }
 423
 424                 sensors_synced = true;
 425
 426                 if(!sensors.empty())
 427                 {
 428                         unsigned high_addr = (--sensors.end())->first;
 429                         if(high_addr>16*s88.size())
 430                                 command("create(26, add[0])");
 431                 }
 432         }
 433         else if(msg.header.value=="create(10)")
 434         {
 435                 Message::ObjectMap::const_iterator i = msg.content.find(10);
 436                 if(i!=msg.content.end())
 437                 {
 438                         Message::AttribMap::const_iterator j = i->second.find("id");
 439                         if(j!=i->second.end())
 440                         {
 441                                 unsigned id = lexical_cast<unsigned>(j->second);
 442                                 LocoMap::iterator k = locos.lower_bound(0x10000);
 443                                 if(k!=locos.end())
 444                                 {
 445                                         command(format("request(%d, view, control)", id));
 446                                         command(format("set(%d, addr[%d], protocol[%s], name[\"%s\"])",
 447                                                 id, k->second.address, (k->second.protocol==MM_27 ? "MM27" : "MM14"), k->second.name));
 448                                         command("create(10, append)");
 449
 450                                         locos.insert(LocoMap::value_type(id, k->second));
 451                                         locos.erase(k);
 452                                 }
 453                         }
 454                 }
 455
 456                 if(locos.lower_bound(0x10000)!=locos.end())
 457                         command("create(10)");
 458         }
 459         else if(!msg.header.value.compare(0, 10, "create(11,"))
 460         {
 461                 Message::ObjectMap::const_iterator i = msg.content.find(11);
 462                 if(i!=msg.content.end())
 463                 {
 464                         Message::AttribMap::const_iterator j = i->second.find("id");
 465                         if(j!=i->second.end())
 466                         {
 467                                 unsigned id = lexical_cast<unsigned>(j->second);
 468                                 TurnoutMap::iterator k = turnouts.lower_bound(0x10000);
 469                                 if(k!=turnouts.end())
 470                                 {
 471                                         command(format("request(%d, view, control)", id));
 472                                         command(format("set(%d, addr[%d], symbol[%d], name1[\"Switch\"], name2[\"%d\"], name3[\"\"])",
 473                                                 id, k->second.address, k->second.symbol, k->second.address));
 474                                         command(format("set(%d, state[%d])", id, k->second.state&((1<<k->second.bits)-1)));
 475
 476                                         k->second.synced = true;
 477                                         turnouts.insert(TurnoutMap::value_type(id, k->second));
 478                                         turnouts.erase(k);
 479                                 }
 480                         }
 481                 }
 482         }
 483         else if(!msg.header.value.compare(0, 10, "create(26,"))
 484                 command("queryObjects(26)");
 485 }
 486
 487 void CentralStation::process_event(const Message &msg)
 488 {
 489         for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 490                 process_object(i->first, i->second);
 491 }
 492
 493 void CentralStation::process_object(unsigned id, const Message::AttribMap &attribs)
 494 {
 495         if(id==1)
 496         {
 497                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 498                         if(i->first=="status")
 499                         {
 500                                 power = (i->second=="GO");
 501                                 signal_power.emit(power);
 502                         }
 503         }
 504         else if(locos.count(id))
 505         {
 506                 Locomotive &loco = locos[id];
 507                 bool speed_changed = false;
 508                 unsigned funcs_changed = 0;
 509                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 510                 {
 511                         if(i->first=="name")
 512                                 loco.name = i->second.substr(1, i->second.size()-2);
 513                         else if(i->first=="addr")
 514                         {
 515                                 loco_addr.erase(loco.address);
 516                                 loco.address = lexical_cast<unsigned>(i->second);
 517                                 loco_addr[loco.address] = id;
 518                         }
 519                         else if(i->first=="protocol")
 520                         {
 521                                 if(i->second=="MM")
 522                                         loco.protocol = MM;
 523                                 else if(i->second=="MM27")
 524                                         loco.protocol = MM_27;
 525                                 else if(i->second=="MFX")
 526                                         loco.protocol = MFX;
 527                         }
 528                         else if(i->first=="speedstep")
 529                         {
 530                                 loco.speed = lexical_cast<unsigned>(i->second);
 531                                 if(loco.protocol==MFX && loco.speed)
 532                                         --loco.speed;
 533                                 speed_changed = true;
 534                         }
 535                         else if(i->first=="dir")
 536                         {
 537                                 loco.reverse = i->second[0]!='0';
 538                                 speed_changed = true;
 539                         }
 540                         else if(i->first=="func")
 541                         {
 542                                 vector<string> parts = split(i->second, ", ");
 543                                 unsigned func = lexical_cast<unsigned>(parts[0]);
 544                                 bool value = lexical_cast<unsigned>(parts[1]);
 545                                 loco.funcs &= ~(1<<func);
 546                                 if(value)
 547                                         loco.funcs |= 1<<func;
 548                                 funcs_changed |= 1<<func;
 549                         }
 550                         else if(i->first=="msg")
 551                         {
 552                                 if(i->second=="CONTROL_LOST")
 553                                         command(format("request(%d, control, force)", id));
 554                         }
 555                 }
 556
 557                 if(speed_changed)
 558                         signal_loco_speed.emit(loco.address, loco.speed, loco.reverse);
 559                 for(unsigned i=0; funcs_changed>>i; ++i)
 560                         if(funcs_changed&(1<<i))
 561                                 signal_loco_function.emit(loco.address, i, loco.funcs&(1<<i));
 562         }
 563         else if(turnouts.count(id))
 564         {
 565                 Turnout &turnout = turnouts[id];
 566                 bool state_changed = false;
 567                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 568                 {
 569                         if(i->first=="addr")
 570                         {
 571                                 turnout_addr.erase(turnout.address);
 572                                 turnout.address = lexical_cast<unsigned>(i->second);
 573                                 turnout_addr[turnout.address] = id;
 574                         }
 575                         else if(i->first=="state")
 576                         {
 577                                 unsigned state = lexical_cast<unsigned>(i->second);
 578                                 unsigned mask = (1<<turnout.bits)-1;
 579                                 turnout.state = (turnout.state&~mask) | (state&mask);
 580                                 state_changed = true;
 581                         }
 582                 }
 583
 584                 if(state_changed)
 585                         signal_turnout.emit(turnout.address, turnout.state);
 586         }
 587         else if(find(s88.begin(), s88.end(), id)!=s88.end())
 588         {
 589                 unsigned base = 0;
 590                 for(; (base<s88.size() && s88[base]!=id); ++base) ;
 591
 592                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 593                 {
 594                         if(i->first=="state")
 595                         {
 596                                 unsigned state = lexical_cast<unsigned>(i->second, "%i");
 597                                 for(unsigned j=0; j<16; ++j)
 598                                 {
 599                                         unsigned addr = base*16+j+1;
 600                                         Sensor &sensor = sensors[addr];
 601                                         bool s = state&(1<<j);
 602                                         if(s)
 603                                         {
 604                                                 sensor.off_timeout = Time::TimeStamp();
 605                                                 if(!sensor.state)
 606                                                 {
 607                                                         sensor.state = true;
 608                                                         signal_sensor.emit(addr, sensor.state);
 609                                                 }
 610                                         }
 611                                         else if(sensor.state)
 612                                                 sensor.off_timeout = Time::now()+700*Time::msec;
 613                                 }
 614                         }
 615                 }
 616         }
 617 }
 618
 619 CentralStation::Protocol CentralStation::map_protocol(const string &name) const
 620 {
 621         if(name=="MM")
 622                 return MM;
 623         else if(name=="MM-27")
 624                 return MM_27;
 625         else if(name=="MFX")
 626                 return MFX;
 627         else
 628                 throw InvalidParameterValue("Unknown protocol");
 629 }
 630
 631 template<typename T>
 632 unsigned CentralStation::map_address(const map<unsigned, T> &omap, const AddressMap &amap, unsigned addr) const
 633 {
 634         if(omap.count(addr))
 635                 return addr;
 636         else
 637         {
 638                 AddressMap::const_iterator i = amap.find(addr);
 639                 if(i!=amap.end())
 640                         return i->second;
 641                 else
 642                         return 0;
 643         }
 644 }
 645
 646 void CentralStation::skip(string::iterator &iter, const string::iterator &end, const string &what) const
 647 {
 648         for(; (iter!=end && what.find(*iter)!=string::npos); ++iter) ;
 649 }
 650
 651 string CentralStation::parse_token(string::iterator &iter, const string::iterator &end, const string &stop) const
 652 {
 653         vector<char> parens;
 654         bool quote = false;
 655         string token;
 656
 657         skip(iter, end, stop);
 658
 659         for(; iter!=end; ++iter)
 660         {
 661                 if(stop.find(*iter)!=string::npos && parens.empty() && !quote)
 662                         break;
 663                 else if(*iter=='(' || *iter=='[')
 664                         parens.push_back(*iter);
 665                 else if((*iter==')' || *iter==']') && !parens.empty())
 666                 {
 667                         if((*iter==')' && parens.back()!='(') || (*iter==']' && parens.back()!='['))
 668                                 IO::print("Mismatched parentheses\n");
 669                         parens.pop_back();
 670                 }
 671                 else if(*iter=='"')
 672                         quote = !quote;
 673
 674                 token += *iter;
 675         }
 676
 677         return token;
 678 }
 679
 680 CentralStation::Tag CentralStation::parse_tag(string::iterator &iter, const string::iterator &end) const
 681 {
 682         Tag tag;
 683
 684         for(; (iter!=end && *iter!='<'); ++iter) ;
 685         if(iter==end)
 686                 return Tag();
 687
 688         tag.type = parse_token(++iter, end, " >");
 689         if(tag.type=="END")
 690         {
 691                 string code = parse_token(iter, end, " >");
 692                 tag.code = lexical_cast<unsigned>(code);
 693         }
 694         skip(iter, end, " ");
 695         tag.value = parse_token(iter, end, ">");
 696         if(iter==end)
 697                 return Tag();
 698         ++iter;
 699
 700         return tag;
 701 }
 702
 703 CentralStation::Message CentralStation::parse_message(string::iterator &iter, const string::iterator &end) const
 704 {
 705         Message msg;
 706
 707         msg.header = parse_tag(iter, end);
 708
 709         while(iter!=end)
 710         {
 711                 skip(iter, end, "\r\n");
 712                 if(*iter=='<')
 713                         break;
 714
 715                 string id = parse_token(iter, end, " \r\n<");
 716                 Message::AttribMap &attribs = msg.content[lexical_cast<unsigned>(id)];
 717                 while(iter!=end && *iter!='\n' && *iter!='\r')
 718                 {
 719                         string attr = parse_token(iter, end, " \r\n<");
 720                         string::size_type open_bracket = attr.find('[');
 721                         if(open_bracket!=string::npos)
 722                         {
 723                                 string::size_type close_bracket = attr.rfind(']');
 724                                 attribs[attr.substr(0, open_bracket)] = attr.substr(open_bracket+1, close_bracket-open_bracket-1);
 725                         }
 726                         else
 727                                 attribs[attr];
 728                 }
 729         }
 730
 731         msg.footer = parse_tag(iter, end);
 732         if(msg.footer.type.empty())
 733                 return Message();
 734
 735         return msg;
 736 }
 737
 738
 739 CentralStation::Tag::Tag():
 740         code(0)
 741 { }
 742
 743 CentralStation::Tag::operator bool() const
 744 {
 745         return !type.empty();
 746 }
 747
 748
 749 CentralStation::Message::operator bool() const
 750 {
 751         return header && footer;
 752 }
 753
 754
 755 CentralStation::Locomotive::Locomotive():
 756         address(0),
 757         speed(0),
 758         reverse(false),
 759         funcs(0),
 760         control(false)
 761 { }
 762
 763
 764 CentralStation::Turnout::Turnout():
 765         address(0),
 766         symbol(0),
 767         state(0),
 768         bits(0),
 769         synced(false)
 770 { }
 771
 772
 773 CentralStation::Sensor::Sensor():
 774         state(false)
 775 { }
 776
 777 } // namespace R2C2