lib/dvb/db.cpp

   1 #include <errno.h>
   2 #include <lib/dvb/db.h>
   3 #include <lib/dvb/frontend.h>
   4 #include <lib/base/eerror.h>
   5 #include <lib/base/estring.h>
   6 #include <dvbsi++/service_description_section.h>
   7 #include <dvbsi++/descriptor_tag.h>
   8 #include <dvbsi++/service_descriptor.h>
   9 #include <dvbsi++/satellite_delivery_system_descriptor.h>
  10
  11 DEFINE_REF(eDVBService);
  12
  13 RESULT eBouquet::addService(const eServiceReference &ref)
  14 {
  15         list::iterator it =
  16                 std::find(m_services.begin(), m_services.end(), ref);
  17         if ( it != m_services.end() )
  18                 return -1;
  19         m_services.push_back(ref);
  20         return 0;
  21 }
  22
  23 RESULT eBouquet::removeService(const eServiceReference &ref)
  24 {
  25         list::iterator it =
  26                 std::find(m_services.begin(), m_services.end(), ref);
  27         if ( it == m_services.end() )
  28                 return -1;
  29         m_services.erase(it);
  30         return 0;
  31 }
  32
  33 RESULT eBouquet::moveService(const eServiceReference &ref, unsigned int pos)
  34 {
  35         if ( pos < 0 || pos >= m_services.size() )
  36                 return -1;
  37         ++pos;
  38         list::iterator source=m_services.end();
  39         list::iterator dest=m_services.end();
  40         bool forward = false;
  41         for (list::iterator it(m_services.begin()); it != m_services.end(); ++it)
  42         {
  43                 if (dest == m_services.end() && !--pos)
  44                         dest = it;
  45                 if (*it == ref)
  46                 {
  47                         source = it;
  48                         forward = pos>0;
  49                 }
  50                 if (dest != m_services.end() && source != m_services.end())
  51                         break;
  52         }
  53         if (dest == m_services.end() || source == m_services.end() || source == dest)
  54                 return -1;
  55         while (source != dest)
  56         {
  57                 if (forward)
  58                         std::iter_swap(source++, source);
  59                 else
  60                         std::iter_swap(source--, source);
  61         }
  62         return 0;
  63 }
  64
  65 RESULT eBouquet::flushChanges()
  66 {
  67         FILE *f=fopen(m_path.c_str(), "wt");
  68         if (!f)
  69                 return -1;
  70         if ( fprintf(f, "#NAME %s\r\n", m_bouquet_name.c_str()) < 0 )
  71                 goto err;
  72         for (list::iterator i(m_services.begin()); i != m_services.end(); ++i)
  73         {
  74                 eServiceReference tmp = *i;
  75                 std::string str = tmp.path;
  76                 if ( (i->flags&eServiceReference::flagDirectory) == eServiceReference::flagDirectory )
  77                 {
  78                         unsigned int p1 = str.find("FROM BOUQUET \"");
  79                         if (p1 == std::string::npos)
  80                         {
  81                                 eDebug("doof... kaputt");
  82                                 continue;
  83                         }
  84                         str.erase(0, p1+14);
  85                         p1 = str.find("\"");
  86                         if (p1 == std::string::npos)
  87                         {
  88                                 eDebug("doof2... kaputt");
  89                                 continue;
  90                         }
  91                         str.erase(p1);
  92                         tmp.path=str;
  93                 }
  94                 if ( fprintf(f, "#SERVICE %s\r\n", tmp.toString().c_str()) < 0 )
  95                         goto err;
  96                 if ( i->name.length() )
  97                         if ( fprintf(f, "#DESCRIPTION %s\r\n", i->name.c_str()) < 0 )
  98                                 goto err;
  99         }
 100         fclose(f);
 101         return 0;
 102 err:
 103         fclose(f);
 104         eDebug("couldn't write file %s", m_path.c_str());
 105         return -1;
 106 }
 107
 108 eDVBService::eDVBService()
 109 {
 110 }
 111
 112 eDVBService::~eDVBService()
 113 {
 114 }
 115
 116 eDVBService &eDVBService::operator=(const eDVBService &s)
 117 {
 118         m_service_name = s.m_service_name;
 119         m_service_name_sort = s.m_service_name_sort;
 120         m_provider_name = s.m_provider_name;
 121         m_flags = s.m_flags;
 122         m_ca = s.m_ca;
 123         m_cache = s.m_cache;
 124         return *this;
 125 }
 126
 127 void eDVBService::genSortName()
 128 {
 129         m_service_name_sort = removeDVBChars(m_service_name);
 130         makeUpper(m_service_name_sort);
 131         while ((!m_service_name_sort.empty()) && m_service_name_sort[0] == ' ')
 132                 m_service_name_sort.erase(0, 1);
 133
 134                 /* put unnamed services at the end, not at the beginning. */
 135         if (m_service_name_sort.empty())
 136                 m_service_name_sort = "\xFF";
 137 }
 138
 139 RESULT eDVBService::getName(const eServiceReference &ref, std::string &name)
 140 {
 141         if (!ref.name.empty())
 142                 name = ref.name;
 143         else if (!m_service_name.empty())
 144                 name = m_service_name;
 145         else
 146                 name = "(...)";
 147         return 0;
 148 }
 149
 150 int eDVBService::getLength(const eServiceReference &ref)
 151 {
 152         return -1;
 153 }
 154
 155 int eDVBService::checkFilter(const eServiceReferenceDVB &ref, const eDVBChannelQuery &query)
 156 {
 157         int res = 0;
 158         switch (query.m_type)
 159         {
 160         case eDVBChannelQuery::tName:
 161                 res = m_service_name_sort.find(query.m_string) != std::string::npos;
 162                 break;
 163         case eDVBChannelQuery::tProvider:
 164                 res = m_provider_name.find(query.m_string) != std::string::npos;
 165                 break;
 166         case eDVBChannelQuery::tType:
 167                 res = ref.getServiceType() == query.m_int;
 168                 break;
 169         case eDVBChannelQuery::tBouquet:
 170                 res = 0;
 171                 break;
 172         case eDVBChannelQuery::tSatellitePosition:
 173                 res = (ref.getDVBNamespace().get() >> 16) == query.m_int;
 174                 break;
 175         case eDVBChannelQuery::tChannelID:
 176         {
 177                 eDVBChannelID chid;
 178                 ref.getChannelID(chid);
 179                 res = chid == query.m_channelid;
 180                 break;
 181         }
 182         case eDVBChannelQuery::tAND:
 183                 res = checkFilter(ref, *query.m_p1) && checkFilter(ref, *query.m_p2);
 184                 break;
 185         case eDVBChannelQuery::tOR:
 186                 res = checkFilter(ref, *query.m_p1) || checkFilter(ref, *query.m_p2);
 187                 break;
 188         }
 189
 190         if (query.m_inverse)
 191                 return !res;
 192         else
 193                 return res;
 194 }
 195
 196 int eDVBService::getCachePID(cacheID id)
 197 {
 198         std::map<int, int>::iterator it = m_cache.find(id);
 199         if ( it != m_cache.end() )
 200                 return it->second;
 201         return -1;
 202 }
 203
 204 void eDVBService::setCachePID(cacheID id, int pid)
 205 {
 206         m_cache[id] = pid;
 207 }
 208
 209 DEFINE_REF(eDVBDB);
 210
 211         /* THIS CODE IS BAD. it should be replaced by somethine better. */
 212 void eDVBDB::load()
 213 {
 214         eDebug("---- opening lame channel db");
 215         FILE *f=fopen("lamedb", "rt");
 216         if (!f)
 217                 return;
 218         char line[256];
 219         if ((!fgets(line, 256, f)) || strncmp(line, "eDVB services", 13))
 220         {
 221                 eDebug("not a servicefile");
 222                 fclose(f);
 223                 return;
 224         }
 225         eDebug("reading services");
 226         if ((!fgets(line, 256, f)) || strcmp(line, "transponders\n"))
 227         {
 228                 eDebug("services invalid, no transponders");
 229                 fclose(f);
 230                 return;
 231         }
 232
 233         // clear all transponders
 234
 235         while (!feof(f))
 236         {
 237                 if (!fgets(line, 256, f))
 238                         break;
 239                 if (!strcmp(line, "end\n"))
 240                         break;
 241                 int dvb_namespace=-1, transport_stream_id=-1, original_network_id=-1;
 242                 sscanf(line, "%x:%x:%x", &dvb_namespace, &transport_stream_id, &original_network_id);
 243                 if (original_network_id == -1)
 244                         continue;
 245                 eDVBChannelID channelid = eDVBChannelID(
 246                         eDVBNamespace(dvb_namespace),
 247                         eTransportStreamID(transport_stream_id),
 248                         eOriginalNetworkID(original_network_id));
 249
 250                 ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
 251                 while (!feof(f))
 252                 {
 253                         fgets(line, 256, f);
 254                         if (!strcmp(line, "/\n"))
 255                                 break;
 256                         if (line[1]=='s')
 257                         {
 258                                 eDVBFrontendParametersSatellite sat;
 259                                 int frequency, symbol_rate, polarisation, fec, orbital_position, inversion;
 260                                 sscanf(line+2, "%d:%d:%d:%d:%d:%d", &frequency, &symbol_rate, &polarisation, &fec, &orbital_position, &inversion);
 261                                 sat.frequency = frequency;
 262                                 sat.symbol_rate = symbol_rate;
 263                                 sat.polarisation = polarisation;
 264                                 sat.fec = fec;
 265                                 sat.orbital_position = orbital_position;
 266                                 sat.inversion = inversion;
 267                                 feparm->setDVBS(sat);
 268                         } else if (line[1]=='t')
 269                         {
 270                                 eDVBFrontendParametersTerrestrial ter;
 271                                 int frequency, bandwidth, code_rate_HP, code_rate_LP, modulation, transmission_mode, guard_interval, hierarchy, inversion;
 272                                 sscanf(line+2, "%d:%d:%d:%d:%d:%d:%d:%d:%d", &frequency, &bandwidth, &code_rate_HP, &code_rate_LP, &modulation, &transmission_mode, &guard_interval, &hierarchy, &inversion);
 273                                 ter.frequency = frequency;
 274                                 ter.bandwidth = bandwidth;
 275                                 ter.code_rate_HP = code_rate_HP;
 276                                 ter.code_rate_LP = code_rate_LP;
 277                                 ter.modulation = modulation;
 278                                 ter.transmission_mode = transmission_mode;
 279                                 ter.guard_interval = guard_interval;
 280                                 ter.hierarchy = hierarchy;
 281                                 ter.inversion = inversion;
 282
 283                                 feparm->setDVBT(ter);
 284                         } else if (line[1]=='c')
 285                         {
 286                                 int frequency, symbol_rate, inversion=0, modulation=3;
 287                                 sscanf(line+2, "%d:%d:%d:%d", &frequency, &symbol_rate, &inversion, &modulation);
 288 //                              t.setCable(frequency, symbol_rate, inversion, modulation);
 289                         }
 290                 }
 291                 addChannelToList(channelid, feparm);
 292         }
 293
 294         if ((!fgets(line, 256, f)) || strcmp(line, "services\n"))
 295         {
 296                 eDebug("services invalid, no services");
 297                 return;
 298         }
 299
 300         // clear all services
 301
 302         int count=0;
 303
 304         while (!feof(f))
 305         {
 306                 if (!fgets(line, 256, f))
 307                         break;
 308                 if (!strcmp(line, "end\n"))
 309                         break;
 310
 311                 int service_id=-1, dvb_namespace, transport_stream_id=-1, original_network_id=-1, service_type=-1, service_number=-1;
 312                 sscanf(line, "%x:%x:%x:%x:%d:%d", &service_id, &dvb_namespace, &transport_stream_id, &original_network_id, &service_type, &service_number);
 313                 if (service_number == -1)
 314                         continue;
 315                 ePtr<eDVBService> s = new eDVBService;
 316                 eServiceReferenceDVB ref =
 317                                                 eServiceReferenceDVB(
 318                                                 eDVBNamespace(dvb_namespace),
 319                                                 eTransportStreamID(transport_stream_id),
 320                                                 eOriginalNetworkID(original_network_id),
 321                                                 eServiceID(service_id),
 322                                                 service_type);
 323                 count++;
 324                 fgets(line, 256, f);
 325                 if (strlen(line))
 326                         line[strlen(line)-1]=0;
 327
 328                 s->m_service_name = line;
 329                 s->genSortName();
 330
 331                 fgets(line, 256, f);
 332                 if (strlen(line))
 333                         line[strlen(line)-1]=0;
 334
 335                 std::string str=line;
 336
 337                 if (str[1]!=':')        // old ... (only service_provider)
 338                 {
 339                         s->m_provider_name=line;
 340                 } else
 341                         while ((!str.empty()) && str[1]==':') // new: p:, f:, c:%02d...
 342                         {
 343                                 unsigned int c=str.find(',');
 344                                 char p=str[0];
 345                                 std::string v;
 346                                 if (c == std::string::npos)
 347                                 {
 348                                         v=str.substr(2);
 349                                         str="";
 350                                 } else
 351                                 {
 352                                         v=str.substr(2, c-2);
 353                                         str=str.substr(c+1);
 354                                 }
 355 //                              eDebug("%c ... %s", p, v.c_str());
 356                                 if (p == 'p')
 357                                         s->m_provider_name=v;
 358                                 else if (p == 'f')
 359                                 {
 360                                         sscanf(v.c_str(), "%x", &s->m_flags);
 361                                 } else if (p == 'c')
 362                                 {
 363                                         int cid, val;
 364                                         sscanf(v.c_str(), "%02d%04x", &cid, &val);
 365                                         s->m_cache[cid]=val;
 366                                 } else if (p == 'C')
 367                                 {
 368                                         int val;
 369                                         sscanf(v.c_str(), "%04x", &val);
 370                                         s->m_ca.insert(val);
 371                                 }
 372                         }
 373                 addService(ref, s);
 374         }
 375
 376         eDebug("loaded %d services", count);
 377
 378         fclose(f);
 379 }
 380
 381 void eDVBDB::save()
 382 {
 383         eDebug("---- saving lame channel db");
 384         FILE *f=fopen("lamedb", "wt");
 385         int channels=0, services=0;
 386         if (!f)
 387                 eFatal("couldn't save lame channel db!");
 388         fprintf(f, "eDVB services /3/\n");
 389         fprintf(f, "transponders\n");
 390         for (std::map<eDVBChannelID, channel>::const_iterator i(m_channels.begin());
 391                         i != m_channels.end(); ++i)
 392         {
 393                 const eDVBChannelID &chid = i->first;
 394                 const channel &ch = i->second;
 395
 396                 fprintf(f, "%08x:%04x:%04x\n", chid.dvbnamespace.get(),
 397                                 chid.transport_stream_id.get(), chid.original_network_id.get());
 398                 eDVBFrontendParametersSatellite sat;
 399                 eDVBFrontendParametersTerrestrial ter;
 400                 if (!ch.m_frontendParameters->getDVBS(sat))
 401                 {
 402                         fprintf(f, "\ts %d:%d:%d:%d:%d:%d\n",
 403                                 sat.frequency, sat.symbol_rate,
 404                                 sat.polarisation, sat.fec, sat.orbital_position,
 405                                 sat.inversion);
 406                 }
 407                 if (!ch.m_frontendParameters->getDVBT(ter))
 408                 {
 409                         fprintf(f, "\tt %d:%d:%d:%d:%d:%d:%d:%d:%d\n",
 410                                 ter.frequency, ter.bandwidth, ter.code_rate_HP,
 411                                 ter.code_rate_LP, ter.modulation, ter.transmission_mode,
 412                                 ter.guard_interval, ter.hierarchy, ter.inversion);
 413                 }
 414                 fprintf(f, "/\n");
 415                 channels++;
 416         }
 417         fprintf(f, "end\nservices\n");
 418
 419         for (std::map<eServiceReferenceDVB, ePtr<eDVBService> >::iterator i(m_services.begin());
 420                 i != m_services.end(); ++i)
 421         {
 422                 const eServiceReferenceDVB &s = i->first;
 423                 fprintf(f, "%04x:%08x:%04x:%04x:%d:%d\n",
 424                                 s.getServiceID().get(), s.getDVBNamespace().get(),
 425                                 s.getTransportStreamID().get(),s.getOriginalNetworkID().get(),
 426                                 s.getServiceType(),
 427                                 0);
 428
 429                 fprintf(f, "%s\n", i->second->m_service_name.c_str());
 430                 fprintf(f, "p:%s", i->second->m_provider_name.c_str());
 431
 432                 // write cached pids
 433                 for (std::map<int,int>::const_iterator ca(i->second->m_cache.begin());
 434                         ca != i->second->m_cache.end(); ++ca)
 435                         fprintf(f, ",c:%02d%04x", ca->first, ca->second);
 436
 437                 // write cached ca pids
 438                 for (std::set<int>::const_iterator ca(i->second->m_ca.begin());
 439                         ca != i->second->m_ca.end(); ++ca)
 440                         fprintf(f, ",C:%04x", *ca);
 441
 442                 fprintf(f, "\n");
 443                 services++;
 444         }
 445         fprintf(f, "end\nHave a lot of bugs!\n");
 446         eDebug("saved %d channels and %d services!", channels, services);
 447         fclose(f);
 448 }
 449
 450 void eDVBDB::loadBouquet(const char *path)
 451 {
 452         std::string bouquet_name = path;
 453         if (!bouquet_name.length())
 454         {
 455                 eDebug("Bouquet load failed.. no path given..");
 456                 return;
 457         }
 458         unsigned int pos = bouquet_name.rfind('/');
 459         if ( pos != std::string::npos )
 460                 bouquet_name.erase(0, pos+1);
 461         if (bouquet_name.empty())
 462         {
 463                 eDebug("Bouquet load failed.. no filename given..");
 464                 return;
 465         }
 466         eBouquet &bouquet = m_bouquets[bouquet_name];
 467         bouquet.m_path = path;
 468         std::list<eServiceReference> &list = bouquet.m_services;
 469         list.clear();
 470
 471         eDebug("loading bouquet... %s", path);
 472         FILE *fp=fopen(path, "rt");
 473         int entries=0;
 474         if (!fp)
 475         {
 476                 eDebug("failed to open.");
 477                 if ( strstr(path, "bouquets.tv") )
 478                 {
 479                         eDebug("recreate bouquets.tv");
 480                         bouquet.m_bouquet_name="Bouquets (TV)";
 481                         bouquet.flushChanges();
 482                 }
 483                 else if ( strstr(path, "bouquets.radio") )
 484                 {
 485                         eDebug("recreate bouquets.radio");
 486                         bouquet.m_bouquet_name="Bouquets (Radio)";
 487                         bouquet.flushChanges();
 488                 }
 489                 return;
 490         }
 491         char line[256];
 492         bool read_descr=false;
 493         eServiceReference *e = NULL;
 494         while (1)
 495         {
 496                 if (!fgets(line, 256, fp))
 497                         break;
 498                 line[strlen(line)-1]=0;
 499                 if (strlen(line) && line[strlen(line)-1]=='\r')
 500                         line[strlen(line)-1]=0;
 501                 if (!line[0])
 502                         break;
 503                 if (line[0]=='#')
 504                 {
 505                         if (!strncmp(line, "#SERVICE ", 9) || !strncmp(line, "#SERVICE: ", 10))
 506                         {
 507                                 int offs = line[8] == ':' ? 10 : 9;
 508                                 eServiceReference tmp(line+offs);
 509                                 if (tmp.type != eServiceReference::idDVB)
 510                                 {
 511                                         eDebug("only DVB Bouquets supported");
 512                                         continue;
 513                                 }
 514                                 if ( (tmp.flags&eServiceReference::flagDirectory) == eServiceReference::flagDirectory )
 515                                 {
 516                                         std::string str = tmp.path;
 517                                         unsigned int pos = str.rfind('/');
 518                                         if ( pos != std::string::npos )
 519                                                 str.erase(0, pos+1);
 520                                         if (str.empty())
 521                                         {
 522                                                 eDebug("Bouquet load failed.. no filename given..");
 523                                                 continue;
 524                                         }
 525                                         loadBouquet(tmp.path.c_str());
 526                                         char buf[256];
 527                                         snprintf(buf, 256, "(type == %d) FROM BOUQUET \"%s\" ORDER BY bouquet", tmp.data[0], str.c_str());
 528                                         tmp.path = buf;
 529                                 }
 530                                 list.push_back(tmp);
 531                                 e = &list.back();
 532                                 read_descr=true;
 533                                 ++entries;
 534                         }
 535                         else if (read_descr && !strncmp(line, "#DESCRIPTION ", 13))
 536                         {
 537                                 e->name = line+13;
 538                                 read_descr=false;
 539                         }
 540                         else if (!strncmp(line, "#NAME ", 6))
 541                                 bouquet.m_bouquet_name=line+6;
 542                         continue;
 543                 }
 544         }
 545         fclose(fp);
 546         eDebug("%d entries in Bouquet %s", entries, bouquet_name.c_str());
 547 }
 548
 549 void eDVBDB::loadBouquets()
 550 {
 551         loadBouquet("bouquets.tv");
 552         loadBouquet("bouquets.radio");
 553 // create default bouquets when missing
 554         if ( m_bouquets.find("userbouquet.favourites.tv") == m_bouquets.end() )
 555         {
 556                 eBouquet &b = m_bouquets["userbouquet.favourites.tv"];
 557                 b.m_path = "userbouquet.favourites.tv";
 558                 b.m_bouquet_name = "Favourites (TV)";
 559                 b.flushChanges();
 560                 eServiceReference ref;
 561                 memset(ref.data, 0, sizeof(ref.data));
 562                 ref.type=1;
 563                 ref.flags=7;
 564                 ref.data[0]=1;
 565                 ref.path="(type == 1) FROM BOUQUET \"userbouquet.favourites.tv\" ORDER BY bouquet";
 566                 eBouquet &parent = m_bouquets["bouquets.tv"];
 567                 parent.m_services.push_back(ref);
 568                 parent.flushChanges();
 569         }
 570         if ( m_bouquets.find("userbouquet.favourites.radio") == m_bouquets.end() )
 571         {
 572                 eBouquet &b = m_bouquets["userbouquet.favourites.radio"];
 573                 b.m_path = "userbouquet.favourites.radio";
 574                 b.m_bouquet_name = "Favourites (Radio)";
 575                 b.flushChanges();
 576                 eServiceReference ref;
 577                 memset(ref.data, 0, sizeof(ref.data));
 578                 ref.type=1;
 579                 ref.flags=7;
 580                 ref.data[0]=1;
 581                 ref.path="(type == 2) FROM BOUQUET \"userbouquet.favourites.radio\" ORDER BY bouquet";
 582                 eBouquet &parent = m_bouquets["bouquets.radio"];
 583                 parent.m_services.push_back(ref);
 584                 parent.flushChanges();
 585         }
 586 }
 587
 588 eDVBDB::eDVBDB()
 589 {
 590         load();
 591         loadBouquets();
 592 }
 593
 594 eDVBDB::~eDVBDB()
 595 {
 596 //      save();
 597 }
 598
 599 RESULT eDVBDB::addChannelToList(const eDVBChannelID &id, iDVBFrontendParameters *feparm)
 600 {
 601         channel ch;
 602         assert(feparm);
 603         ch.m_frontendParameters = feparm;
 604         m_channels.insert(std::pair<eDVBChannelID, channel>(id, ch));
 605         return 0;
 606 }
 607
 608 RESULT eDVBDB::removeChannel(const eDVBChannelID &id)
 609 {
 610         m_channels.erase(id);
 611         return 0;
 612 }
 613
 614 RESULT eDVBDB::getChannelFrontendData(const eDVBChannelID &id, ePtr<iDVBFrontendParameters> &parm)
 615 {
 616         std::map<eDVBChannelID, channel>::iterator i = m_channels.find(id);
 617         if (i == m_channels.end())
 618         {
 619                 parm = 0;
 620                 return -ENOENT;
 621         }
 622         parm = i->second.m_frontendParameters;
 623         return 0;
 624 }
 625
 626 RESULT eDVBDB::addService(const eServiceReferenceDVB &serviceref, eDVBService *service)
 627 {
 628         m_services.insert(std::pair<eServiceReferenceDVB, ePtr<eDVBService> >(serviceref, service));
 629         return 0;
 630 }
 631
 632 RESULT eDVBDB::getService(const eServiceReferenceDVB &reference, ePtr<eDVBService> &service)
 633 {
 634         std::map<eServiceReferenceDVB, ePtr<eDVBService> >::iterator i;
 635         i = m_services.find(reference);
 636         if (i == m_services.end())
 637         {
 638                 service = 0;
 639                 return -ENOENT;
 640         }
 641         service = i->second;
 642         return 0;
 643 }
 644
 645 RESULT eDVBDB::flush()
 646 {
 647         save();
 648         return 0;
 649 }
 650
 651 RESULT eDVBDB::getBouquet(const eServiceReference &ref, eBouquet* &bouquet)
 652 {
 653         std::string str = ref.path;
 654         if (str.empty())
 655         {
 656                 eDebug("getBouquet failed.. no path given!");
 657                 return -1;
 658         }
 659         unsigned int pos = str.find("FROM BOUQUET \"");
 660         if ( pos != std::string::npos )
 661         {
 662                 str.erase(0, pos+14);
 663                 pos = str.find('"');
 664                 if ( pos != std::string::npos )
 665                         str.erase(pos);
 666                 else
 667                         str.clear();
 668         }
 669         if (str.empty())
 670         {
 671                 eDebug("getBouquet failed.. couldn't parse bouquet name");
 672                 return -1;
 673         }
 674         std::map<std::string, eBouquet>::iterator i =
 675                 m_bouquets.find(str);
 676         if (i == m_bouquets.end())
 677         {
 678                 bouquet = 0;
 679                 return -ENOENT;
 680         }
 681         bouquet = &i->second;
 682         return 0;
 683 }
 684
 685 RESULT eDVBDB::startQuery(ePtr<iDVBChannelListQuery> &query, eDVBChannelQuery *q, const eServiceReference &source)
 686 {
 687         if ( q && q->m_bouquet_name.length() )
 688                 query = new eDVBDBBouquetQuery(this, source, q);
 689         else
 690                 query = new eDVBDBQuery(this, source, q);
 691         return 0;
 692 }
 693
 694 DEFINE_REF(eDVBDBQueryBase);
 695
 696 eDVBDBQueryBase::eDVBDBQueryBase(eDVBDB *db, const eServiceReference &source, eDVBChannelQuery *query)
 697         :m_db(db), m_query(query), m_source(source)
 698 {
 699 }
 700
 701 int eDVBDBQueryBase::compareLessEqual(const eServiceReferenceDVB &a, const eServiceReferenceDVB &b)
 702 {
 703         ePtr<eDVBService> a_service, b_service;
 704
 705         int sortmode = m_query ? m_query->m_sort : eDVBChannelQuery::tName;
 706
 707         if ((sortmode == eDVBChannelQuery::tName) || (sortmode == eDVBChannelQuery::tProvider))
 708         {
 709                 if (m_db->getService(a, a_service))
 710                         return 1;
 711                 if (m_db->getService(b, b_service))
 712                         return 1;
 713         }
 714
 715         switch (sortmode)
 716         {
 717         case eDVBChannelQuery::tName:
 718                 return a_service->m_service_name_sort < b_service->m_service_name_sort;
 719         case eDVBChannelQuery::tProvider:
 720                 return a_service->m_provider_name < b_service->m_provider_name;
 721         case eDVBChannelQuery::tType:
 722                 return a.getServiceType() < b.getServiceType();
 723         case eDVBChannelQuery::tBouquet:
 724                 return 0;
 725         case eDVBChannelQuery::tSatellitePosition:
 726                 return (a.getDVBNamespace().get() >> 16) < (b.getDVBNamespace().get() >> 16);
 727         default:
 728                 return 1;
 729         }
 730         return 0;
 731 }
 732
 733 eDVBDBQuery::eDVBDBQuery(eDVBDB *db, const eServiceReference &source, eDVBChannelQuery *query)
 734         :eDVBDBQueryBase(db, source, query)
 735 {
 736         m_cursor = m_db->m_services.begin();
 737 }
 738
 739 RESULT eDVBDBQuery::getNextResult(eServiceReferenceDVB &ref)
 740 {
 741         while (m_cursor != m_db->m_services.end())
 742         {
 743                 ref = m_cursor->first;
 744
 745                 int res = (!m_query) || m_cursor->second->checkFilter(ref, *m_query);
 746
 747                 ++m_cursor;
 748
 749                 if (res)
 750                         return 0;
 751         }
 752
 753         ref.type = eServiceReference::idInvalid;
 754
 755         return 1;
 756 }
 757
 758 eDVBDBBouquetQuery::eDVBDBBouquetQuery(eDVBDB *db, const eServiceReference &source, eDVBChannelQuery *query)
 759         :eDVBDBQueryBase(db, source, query), m_cursor(db->m_bouquets[query->m_bouquet_name].m_services.begin())
 760 {
 761 }
 762
 763 RESULT eDVBDBBouquetQuery::getNextResult(eServiceReferenceDVB &ref)
 764 {
 765         eBouquet &bouquet = m_db->m_bouquets[m_query->m_bouquet_name];
 766         std::list<eServiceReference> &list = bouquet.m_services;
 767         while (m_cursor != list.end())
 768         {
 769                 ref = *((eServiceReferenceDVB*)&(*m_cursor));
 770
 771                 std::map<eServiceReferenceDVB, ePtr<eDVBService> >::iterator it =
 772                         m_db->m_services.find(ref);
 773
 774                 int res = (!m_query) || it == m_db->m_services.end() || it->second->checkFilter(ref, *m_query);
 775
 776                 ++m_cursor;
 777
 778                 if (res)
 779                         return 0;
 780         }
 781
 782         ref.type = eServiceReference::idInvalid;
 783
 784         return 1;
 785 }
 786
 787 /* (<name|provider|type|bouquet|satpos|chid> <==|...> <"string"|int>)[||,&& (..)] */
 788
 789 static int decodeType(const std::string &type)
 790 {
 791         if (type == "name")
 792                 return eDVBChannelQuery::tName;
 793         else if (type == "provider")
 794                 return eDVBChannelQuery::tProvider;
 795         else if (type == "type")
 796                 return eDVBChannelQuery::tType;
 797         else if (type == "bouquet")
 798                 return eDVBChannelQuery::tBouquet;
 799         else if (type == "satellitePosition")
 800                 return eDVBChannelQuery::tSatellitePosition;
 801         else if (type == "channelID")
 802                 return eDVBChannelQuery::tChannelID;
 803         else
 804                 return -1;
 805 }
 806
 807         /* never, NEVER write a parser in C++! */
 808 RESULT parseExpression(ePtr<eDVBChannelQuery> &res, std::list<std::string>::const_iterator begin, std::list<std::string>::const_iterator end)
 809 {
 810         std::list<std::string>::const_iterator end_of_exp;
 811         if (*begin == "(")
 812         {
 813                 end_of_exp = begin;
 814                 while (end_of_exp != end)
 815                         if (*end_of_exp == ")")
 816                                 break;
 817                         else
 818                                 ++end_of_exp;
 819
 820                 if (end_of_exp == end)
 821                 {
 822                         eDebug("expression parse: end of expression while searching for closing brace");
 823                         return -1;
 824                 }
 825
 826                 ++begin;
 827                 // begin..end_of_exp
 828                 int r = parseExpression(res, begin, end_of_exp);
 829                 if (r)
 830                         return r;
 831                 ++end_of_exp;
 832
 833                         /* we had only one sub expression */
 834                 if (end_of_exp == end)
 835                 {
 836 //                      eDebug("only one sub expression");
 837                         return 0;
 838                 }
 839
 840                         /* otherwise we have an operator here.. */
 841
 842                 ePtr<eDVBChannelQuery> r2 = res;
 843                 res = new eDVBChannelQuery();
 844                 res->m_sort = 0;
 845                 res->m_p1 = r2;
 846                 res->m_inverse = 0;
 847                 r2 = 0;
 848
 849                 if (*end_of_exp == "||")
 850                         res->m_type = eDVBChannelQuery::tOR;
 851                 else if (*end_of_exp == "&&")
 852                         res->m_type = eDVBChannelQuery::tAND;
 853                 else
 854                 {
 855                         eDebug("found operator %s, but only && and || are allowed!", end_of_exp->c_str());
 856                         res = 0;
 857                         return 1;
 858                 }
 859
 860                 ++end_of_exp;
 861
 862                 return parseExpression(res->m_p2, end_of_exp, end);
 863         }
 864
 865         // "begin" <op> "end"
 866         std::string type, op, val;
 867
 868         res = new eDVBChannelQuery();
 869         res->m_sort = 0;
 870
 871         int cnt = 0;
 872         while (begin != end)
 873         {
 874                 switch (cnt)
 875                 {
 876                 case 0:
 877                         type = *begin;
 878                         break;
 879                 case 1:
 880                         op = *begin;
 881                         break;
 882                 case 2:
 883                         val = *begin;
 884                         break;
 885                 case 3:
 886                         eDebug("malformed query: got '%s', but expected only <type> <op> <val>", begin->c_str());
 887                         return 1;
 888                 }
 889                 ++begin;
 890                 ++cnt;
 891         }
 892
 893         if (cnt != 3)
 894         {
 895                 eDebug("malformed query: missing stuff");
 896                 res = 0;
 897                 return 1;
 898         }
 899
 900         res->m_type = decodeType(type);
 901
 902         if (res->m_type == -1)
 903         {
 904                 eDebug("malformed query: invalid type %s", type.c_str());
 905                 res = 0;
 906                 return 1;
 907         }
 908
 909         if (op == "==")
 910                 res->m_inverse = 0;
 911         else if (op == "!=")
 912                 res->m_inverse = 1;
 913         else
 914         {
 915                 eDebug("invalid operator %s", op.c_str());
 916                 res = 0;
 917                 return 1;
 918         }
 919
 920         res->m_string = val;
 921         res->m_int = atoi(val.c_str());
 922 //      res->m_channelid = eDVBChannelID(val);
 923
 924         return 0;
 925 }
 926
 927 RESULT eDVBChannelQuery::compile(ePtr<eDVBChannelQuery> &res, std::string query)
 928 {
 929         std::list<std::string> tokens;
 930
 931         std::string current_token;
 932         std::string bouquet_name;
 933
 934 //      eDebug("splitting %s....", query.c_str());
 935         unsigned int i = 0;
 936         const char *splitchars="()";
 937         int quotemode = 0, lastsplit = 0, lastalnum = 0;
 938         while (i <= query.size())
 939         {
 940                 int c = (i < query.size()) ? query[i] : ' ';
 941                 ++i;
 942
 943                 int issplit = !!strchr(splitchars, c);
 944                 int isaln = isalnum(c);
 945                 int iswhite = c == ' ';
 946                 int isquot = c == '\"';
 947
 948                 if (quotemode)
 949                 {
 950                         iswhite = issplit = 0;
 951                         isaln = lastalnum;
 952                 }
 953
 954                 if (issplit || iswhite || isquot || lastsplit || (lastalnum != isaln))
 955                 {
 956                         if (current_token.size())
 957                                 tokens.push_back(current_token);
 958                         current_token.clear();
 959                 }
 960
 961                 if (!(iswhite || isquot))
 962                         current_token += c;
 963
 964                 if (isquot)
 965                         quotemode = !quotemode;
 966                 lastsplit = issplit;
 967                 lastalnum = isaln;
 968         }
 969
 970 //      for (std::list<std::string>::const_iterator a(tokens.begin()); a != tokens.end(); ++a)
 971 //      {
 972 //              printf("%s\n", a->c_str());
 973 //      }
 974
 975         int sort = eDVBChannelQuery::tName;
 976                 /* check for "ORDER BY ..." */
 977
 978         while (tokens.size() > 2)
 979         {
 980                 std::list<std::string>::iterator it = tokens.end();
 981                 --it; --it; --it;
 982                 if (*it == "ORDER")
 983                 {
 984                         ++it;
 985                         if (*it == "BY")
 986                         {
 987                                 ++it;
 988                                 sort = decodeType(*it);
 989                                 tokens.pop_back(); // ...
 990                                 tokens.pop_back(); // BY
 991                                 tokens.pop_back(); // ORDER
 992                         } else
 993                                 sort = -1;
 994                 }
 995                 else if (*it == "FROM")
 996                 {
 997                         ++it;
 998                         if (*it == "BOUQUET")
 999                         {
1000                                 ++it;
1001                                 bouquet_name = *it;
1002                                 tokens.pop_back(); // ...
1003                                 tokens.pop_back(); // FROM
1004                                 tokens.pop_back(); // BOUQUET
1005                         }
1006                 }
1007                 else
1008                         break;
1009         }
1010
1011         if (sort == -1)
1012         {
1013                 eWarning("ORDER BY .. string invalid.");
1014                 res = 0;
1015                 return -1;
1016         }
1017
1018 //      eDebug("sort by %d", sort);
1019
1020                 /* now we recursivly parse that. */
1021         int r = parseExpression(res, tokens.begin(), tokens.end());
1022
1023         if (res)
1024         {
1025                 res->m_sort = sort;
1026                 res->m_bouquet_name = bouquet_name;
1027         }
1028
1029 //      eDebug("return: %d", r);
1030         return r;
1031 }
1032
1033 DEFINE_REF(eDVBChannelQuery);