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 127;
  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                 command(format("set(%d, speedstep[%d])", id, speed));
 125 }
 126
 127 void CentralStation::set_loco_reverse(unsigned addr, bool rev)
 128 {
 129         unsigned id = map_address(locos, loco_addr, addr);
 130         if(id)
 131                 command(format("set(%d, dir[%d])", id, rev));
 132 }
 133
 134 void CentralStation::set_loco_function(unsigned addr, unsigned func, bool state)
 135 {
 136         unsigned id = map_address(locos, loco_addr, addr);
 137         if(id)
 138                 command(format("set(%d, func[%d, %d])", id, func, state));
 139 }
 140
 141 void CentralStation::add_turnout(unsigned addr, const TrackType &type)
 142 {
 143         bool left = false;
 144         bool right = false;
 145         bool cross = false;
 146
 147         const vector<TrackPart> &parts = type.get_parts();
 148         for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
 149         {
 150                 TrackPoint start = i->get_point(0);
 151                 TrackPoint end = i->get_point(i->get_length());
 152                 if(end.dir>start.dir+0.01)
 153                         left = true;
 154                 else if(end.dir<start.dir-0.01)
 155                         right = true;
 156                 else if(start.dir<-0.01 || start.dir>0.01)
 157                         cross = true;
 158         }
 159
 160         unsigned symbol;
 161         if(cross)
 162                 symbol = Turnout::DOUBLESLIP;
 163         else if(left && right)
 164                 symbol = Turnout::THREEWAY;
 165         else if(left)
 166                 symbol = Turnout::LEFT;
 167         else if(right)
 168                 symbol = Turnout::RIGHT;
 169
 170         unsigned id = map_address(turnouts, turnout_addr, addr);
 171         if(!id)
 172         {
 173                 id = addr|0x10000;
 174
 175                 Turnout &turnout = turnouts[id];
 176                 turnout.address = addr;
 177                 turnout.bits = type.get_state_bits();
 178                 turnout.symbol = symbol;
 179
 180                 turnout_addr[addr] = id;
 181
 182                 if(turnouts_synced)
 183                         command("create(11, append)");
 184         }
 185         else
 186         {
 187                 Turnout &turnout = turnouts[id];
 188                 command(format("request(%d, view, control)", id));
 189                 if(turnout.symbol!=symbol)
 190                         command(format("set(%d, symbol[%d])", symbol));
 191         }
 192 }
 193
 194 void CentralStation::set_turnout(unsigned addr, unsigned state)
 195 {
 196         unsigned id = map_address(turnouts, turnout_addr, addr);
 197         if(id)
 198         {
 199                 Turnout &turnout = turnouts[id];
 200                 unsigned mask = (1<<turnout.bits)-1;
 201
 202                 if(((state^turnout.state)&mask)==0 || !turnout.synced)
 203                 {
 204                         turnout.state = state;
 205                         signal_turnout.emit(addr, turnout.state);
 206                         return;
 207                 }
 208
 209                 turnout.state = (turnout.state&mask) | (state&~mask);
 210
 211                 command(format("set(%d, state[%d])", id, state&mask));
 212         }
 213 }
 214
 215 unsigned CentralStation::get_turnout(unsigned addr) const
 216 {
 217         unsigned id = map_address(turnouts, turnout_addr, addr);
 218         if(id)
 219         {
 220                 TurnoutMap::const_iterator i = turnouts.find(id);
 221                 if(i!=turnouts.end())
 222                         return i->second.state;
 223         }
 224         return 0;
 225 }
 226
 227 void CentralStation::add_sensor(unsigned addr)
 228 {
 229         sensors.insert(SensorMap::value_type(addr, Sensor()));
 230
 231         if(sensors_synced)
 232         {
 233                 if(addr>s88.size()*16)
 234                         command("create(26, add[0])");
 235         }
 236 }
 237
 238 bool CentralStation::get_sensor(unsigned addr) const
 239 {
 240         SensorMap::const_iterator i = sensors.find(addr);
 241         if(i!=sensors.end())
 242                 return i->second.state;
 243         return false;
 244 }
 245
 246 void CentralStation::tick()
 247 {
 248         Time::TimeStamp t = Time::now();
 249         for(SensorMap::iterator i=sensors.begin(); i!=sensors.end(); ++i)
 250                 if(i->second.off_timeout && t>i->second.off_timeout)
 251                 {
 252                         i->second.state = false;
 253                         i->second.off_timeout = Time::TimeStamp();
 254                         signal_sensor.emit(i->first, i->second.state);
 255                 }
 256
 257         while(Message msg = receive())
 258         {
 259                 if(msg.footer.code)
 260                         IO::print("\033[31m*** ERROR: %s: %d %s ***\033[0m\n", msg.header.value, msg.footer.code, msg.footer.value);
 261
 262                 if(msg.header.type=="REPLY")
 263                         process_reply(msg);
 264                 else if(msg.header.type=="EVENT")
 265                         process_event(msg);
 266         }
 267 }
 268
 269 void CentralStation::flush()
 270 {
 271 }
 272
 273 void CentralStation::command(const string &cmd, bool force)
 274 {
 275         if(pending_commands<10 || force)
 276         {
 277                 socket.write(cmd+"\r\n");
 278                 ++pending_commands;
 279         }
 280         else
 281                 cmd_queue.push_back(cmd);
 282 }
 283
 284 CentralStation::Message CentralStation::receive()
 285 {
 286         while(IO::poll(socket, IO::P_INPUT, Time::zero))
 287         {
 288                 char rbuf[1024];
 289                 unsigned len = socket.read(rbuf, sizeof(rbuf));
 290                 if(!len)
 291                         return Message();
 292
 293                 in_buffer.append(rbuf, len);
 294         }
 295
 296         if(!in_buffer.empty())
 297         {
 298                 string::iterator iter = in_buffer.begin();
 299                 if(Message msg = parse_message(iter, in_buffer.end()))
 300                 {
 301                         skip(iter, in_buffer.end(), "\r\n");
 302                         in_buffer.erase(in_buffer.begin(), iter);
 303
 304                         if(msg.header.type=="REPLY" && pending_commands>0)
 305                         {
 306                                 --pending_commands;
 307                                 if(!cmd_queue.empty())
 308                                 {
 309                                         command(cmd_queue.front());
 310                                         cmd_queue.pop_front();
 311                                 }
 312                         }
 313
 314                         return msg;
 315                 }
 316         }
 317
 318         return Message();
 319 }
 320
 321 void CentralStation::process_reply(const Message &msg)
 322 {
 323         if(!msg.header.value.compare(0, 4, "get("))
 324         {
 325                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 326                 {
 327                         if(turnouts.count(i->first))
 328                                 turnouts[i->first].synced = true;
 329
 330                         process_object(i->first, i->second);
 331                 }
 332         }
 333         else if(!msg.header.value.compare(0, 16, "queryObjects(10,"))
 334         {
 335                 for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 336                 {
 337                         LocoMap::iterator j = locos.find(i->first);
 338                         if(j==locos.end())
 339                         {
 340                                 bool found = false;
 341                                 Message::AttribMap::const_iterator k = i->second.find("addr");
 342                                 if(k!=i->second.end())
 343                                 {
 344                                         unsigned addr = lexical_cast<unsigned>(k->second);
 345
 346                                         j = locos.find(addr|0x10000);
 347                                         if(j!=locos.end())
 348                                         {
 349                                                 command(format("request(%d, view, control, force)", i->first));
 350                                                 command(format("get(%d, dir, func[0])", i->first));
 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                 }
 418
 419                 sensors_synced = true;
 420
 421                 if(!sensors.empty())
 422                 {
 423                         unsigned high_addr = (--sensors.end())->first;
 424                         if(high_addr>16*s88.size())
 425                                 command("create(26, add[0])");
 426                 }
 427         }
 428         else if(msg.header.value=="create(10)")
 429         {
 430                 Message::ObjectMap::const_iterator i = msg.content.find(10);
 431                 if(i!=msg.content.end())
 432                 {
 433                         Message::AttribMap::const_iterator j = i->second.find("id");
 434                         if(j!=i->second.end())
 435                         {
 436                                 unsigned id = lexical_cast<unsigned>(j->second);
 437                                 LocoMap::iterator k = locos.lower_bound(0x10000);
 438                                 if(k!=locos.end())
 439                                 {
 440                                         command(format("request(%d, view, control)", id));
 441                                         command(format("set(%d, addr[%d], protocol[%s], name[\"%s\"])",
 442                                                 id, k->second.address, (k->second.protocol==MM_27 ? "MM27" : "MM14"), k->second.name));
 443                                         command("create(10, append)");
 444
 445                                         locos.insert(LocoMap::value_type(id, k->second));
 446                                         locos.erase(k);
 447                                 }
 448                         }
 449                 }
 450
 451                 if(locos.lower_bound(0x10000)!=locos.end())
 452                         command("create(10)");
 453         }
 454         else if(!msg.header.value.compare(0, 10, "create(11,"))
 455         {
 456                 Message::ObjectMap::const_iterator i = msg.content.find(11);
 457                 if(i!=msg.content.end())
 458                 {
 459                         Message::AttribMap::const_iterator j = i->second.find("id");
 460                         if(j!=i->second.end())
 461                         {
 462                                 unsigned id = lexical_cast<unsigned>(j->second);
 463                                 TurnoutMap::iterator k = turnouts.lower_bound(0x10000);
 464                                 if(k!=turnouts.end())
 465                                 {
 466                                         command(format("request(%d, view, control)", id));
 467                                         command(format("set(%d, addr[%d], symbol[%d], name1[\"Switch\"], name2[\"%d\"], name3[\"\"])",
 468                                                 id, k->second.address, k->second.symbol, k->second.address));
 469                                         command(format("set(%d, state[%d])", id, k->second.state&((1<<k->second.bits)-1)));
 470
 471                                         k->second.synced = true;
 472                                         turnouts.insert(TurnoutMap::value_type(id, k->second));
 473                                         turnouts.erase(k);
 474                                 }
 475                         }
 476                 }
 477         }
 478         else if(!msg.header.value.compare(0, 10, "create(26,"))
 479                 command("queryObjects(26)");
 480 }
 481
 482 void CentralStation::process_event(const Message &msg)
 483 {
 484         for(Message::ObjectMap::const_iterator i=msg.content.begin(); i!=msg.content.end(); ++i)
 485                 process_object(i->first, i->second);
 486 }
 487
 488 void CentralStation::process_object(unsigned id, const Message::AttribMap &attribs)
 489 {
 490         if(id==1)
 491         {
 492                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 493                         if(i->first=="status")
 494                         {
 495                                 power = (i->second=="GO");
 496                                 signal_power.emit(power);
 497                         }
 498         }
 499         else if(locos.count(id))
 500         {
 501                 Locomotive &loco = locos[id];
 502                 bool speed_changed = false;
 503                 unsigned funcs_changed = 0;
 504                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 505                 {
 506                         if(i->first=="name")
 507                                 loco.name = i->second.substr(1, i->second.size()-2);
 508                         else if(i->first=="addr")
 509                         {
 510                                 loco_addr.erase(loco.address);
 511                                 loco.address = lexical_cast<unsigned>(i->second);
 512                                 loco_addr[loco.address] = id;
 513                         }
 514                         else if(i->first=="protocol")
 515                         {
 516                                 if(i->second=="MM")
 517                                         loco.protocol = MM;
 518                                 else if(i->second=="MM27")
 519                                         loco.protocol = MM_27;
 520                                 else if(i->second=="MFX")
 521                                         loco.protocol = MFX;
 522                         }
 523                         else if(i->first=="speedstep")
 524                         {
 525                                 loco.speed = lexical_cast<unsigned>(i->second);
 526                                 speed_changed = true;
 527                         }
 528                         else if(i->first=="dir")
 529                         {
 530                                 loco.reverse = i->second[0]!='0';
 531                                 speed_changed = true;
 532                         }
 533                         else if(i->first=="func")
 534                         {
 535                                 vector<string> parts = split(i->second, ", ");
 536                                 unsigned func = lexical_cast<unsigned>(parts[0]);
 537                                 bool value = lexical_cast<unsigned>(parts[1]);
 538                                 loco.funcs &= ~(1<<func);
 539                                 if(value)
 540                                         loco.funcs |= 1<<func;
 541                                 funcs_changed |= 1<<func;
 542                         }
 543                         else if(i->first=="msg")
 544                         {
 545                                 if(i->second=="CONTROL_LOST")
 546                                         command(format("request(%d, control, force)", id));
 547                         }
 548                 }
 549
 550                 if(speed_changed)
 551                         signal_loco_speed.emit(loco.address, loco.speed, loco.reverse);
 552                 for(unsigned i=0; funcs_changed>>i; ++i)
 553                         if(funcs_changed&(1<<i))
 554                                 signal_loco_function.emit(loco.address, i, loco.funcs&(1<<i));
 555         }
 556         else if(turnouts.count(id))
 557         {
 558                 Turnout &turnout = turnouts[id];
 559                 bool state_changed = false;
 560                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 561                 {
 562                         if(i->first=="addr")
 563                         {
 564                                 turnout_addr.erase(turnout.address);
 565                                 turnout.address = lexical_cast<unsigned>(i->second);
 566                                 turnout_addr[turnout.address] = id;
 567                         }
 568                         else if(i->first=="state")
 569                         {
 570                                 unsigned state = lexical_cast<unsigned>(i->second);
 571                                 unsigned mask = (1<<turnout.bits)-1;
 572                                 turnout.state = (turnout.state&~mask) | (state&mask);
 573                                 state_changed = true;
 574                         }
 575                 }
 576
 577                 if(state_changed)
 578                         signal_turnout.emit(turnout.address, turnout.state);
 579         }
 580         else if(find(s88.begin(), s88.end(), id)!=s88.end())
 581         {
 582                 unsigned base = 0;
 583                 for(; (base<s88.size() && s88[base]!=id); ++base) ;
 584
 585                 for(Message::AttribMap::const_iterator i=attribs.begin(); i!=attribs.end(); ++i)
 586                 {
 587                         if(i->first=="state")
 588                         {
 589                                 unsigned state = lexical_cast<unsigned>(i->second, "%i");
 590                                 for(unsigned j=0; j<16; ++j)
 591                                 {
 592                                         unsigned addr = base*16+j+1;
 593                                         Sensor &sensor = sensors[addr];
 594                                         bool s = state&(1<<j);
 595                                         if(s)
 596                                         {
 597                                                 sensor.off_timeout = Time::TimeStamp();
 598                                                 if(!sensor.state)
 599                                                 {
 600                                                         sensor.state = true;
 601                                                         signal_sensor.emit(addr, sensor.state);
 602                                                 }
 603                                         }
 604                                         else if(sensor.state)
 605                                                 sensor.off_timeout = Time::now()+700*Time::msec;
 606                                 }
 607                         }
 608                 }
 609         }
 610 }
 611
 612 CentralStation::Protocol CentralStation::map_protocol(const string &name) const
 613 {
 614         if(name=="MM")
 615                 return MM;
 616         else if(name=="MM-27")
 617                 return MM_27;
 618         else if(name=="MFX")
 619                 return MFX;
 620         else
 621                 throw InvalidParameterValue("Unknown protocol");
 622 }
 623
 624 template<typename T>
 625 unsigned CentralStation::map_address(const map<unsigned, T> &omap, const AddressMap &amap, unsigned addr) const
 626 {
 627         if(omap.count(addr))
 628                 return addr;
 629         else
 630         {
 631                 AddressMap::const_iterator i = amap.find(addr);
 632                 if(i!=amap.end())
 633                         return i->second;
 634                 else
 635                         return 0;
 636         }
 637 }
 638
 639 void CentralStation::skip(string::iterator &iter, const string::iterator &end, const string &what) const
 640 {
 641         for(; (iter!=end && what.find(*iter)!=string::npos); ++iter) ;
 642 }
 643
 644 string CentralStation::parse_token(string::iterator &iter, const string::iterator &end, const string &stop) const
 645 {
 646         vector<char> parens;
 647         bool quote = false;
 648         string token;
 649
 650         skip(iter, end, stop);
 651
 652         for(; iter!=end; ++iter)
 653         {
 654                 if(stop.find(*iter)!=string::npos && parens.empty() && !quote)
 655                         break;
 656                 else if(*iter=='(' || *iter=='[')
 657                         parens.push_back(*iter);
 658                 else if((*iter==')' || *iter==']') && !parens.empty())
 659                 {
 660                         if((*iter==')' && parens.back()!='(') || (*iter==']' && parens.back()!='['))
 661                                 IO::print("Mismatched parentheses\n");
 662                         parens.pop_back();
 663                 }
 664                 else if(*iter=='"')
 665                         quote = !quote;
 666
 667                 token += *iter;
 668         }
 669
 670         return token;
 671 }
 672
 673 CentralStation::Tag CentralStation::parse_tag(string::iterator &iter, const string::iterator &end) const
 674 {
 675         Tag tag;
 676
 677         for(; (iter!=end && *iter!='<'); ++iter) ;
 678         if(iter==end)
 679                 return Tag();
 680
 681         tag.type = parse_token(++iter, end, " >");
 682         if(tag.type=="END")
 683         {
 684                 string code = parse_token(iter, end, " >");
 685                 tag.code = lexical_cast<unsigned>(code);
 686         }
 687         skip(iter, end, " ");
 688         tag.value = parse_token(iter, end, ">");
 689         if(iter==end)
 690                 return Tag();
 691         ++iter;
 692
 693         return tag;
 694 }
 695
 696 CentralStation::Message CentralStation::parse_message(string::iterator &iter, const string::iterator &end) const
 697 {
 698         Message msg;
 699
 700         msg.header = parse_tag(iter, end);
 701
 702         while(iter!=end)
 703         {
 704                 skip(iter, end, "\r\n");
 705                 if(*iter=='<')
 706                         break;
 707
 708                 string id = parse_token(iter, end, " \r\n<");
 709                 Message::AttribMap &attribs = msg.content[lexical_cast<unsigned>(id)];
 710                 while(iter!=end && *iter!='\n' && *iter!='\r')
 711                 {
 712                         string attr = parse_token(iter, end, " \r\n<");
 713                         string::size_type open_bracket = attr.find('[');
 714                         if(open_bracket!=string::npos)
 715                         {
 716                                 string::size_type close_bracket = attr.rfind(']');
 717                                 attribs[attr.substr(0, open_bracket)] = attr.substr(open_bracket+1, close_bracket-open_bracket-1);
 718                         }
 719                         else
 720                                 attribs[attr];
 721                 }
 722         }
 723
 724         msg.footer = parse_tag(iter, end);
 725         if(msg.footer.type.empty())
 726                 return Message();
 727
 728         return msg;
 729 }
 730
 731
 732 CentralStation::Tag::Tag():
 733         code(0)
 734 { }
 735
 736 CentralStation::Tag::operator bool() const
 737 {
 738         return !type.empty();
 739 }
 740
 741
 742 CentralStation::Message::operator bool() const
 743 {
 744         return header && footer;
 745 }
 746
 747
 748 CentralStation::Locomotive::Locomotive():
 749         address(0),
 750         speed(0),
 751         reverse(false),
 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