src/settings.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "settings.h"
  21 #include "irrlichttypes_bloated.h"
  22 #include "exceptions.h"
  23 #include "jthread/jmutexautolock.h"
  24 #include "strfnd.h"
  25 #include <iostream>
  26 #include <fstream>
  27 #include <sstream>
  28 #include "debug.h"
  29 #include "log.h"
  30 #include "util/serialize.h"
  31 #include "filesys.h"
  32 #include "noise.h"
  33 #include <cctype>
  34 #include <algorithm>
  35
  36
  37 Settings::~Settings()
  38 {
  39         clear();
  40 }
  41
  42
  43 Settings & Settings::operator += (const Settings &other)
  44 {
  45         update(other);
  46
  47         return *this;
  48 }
  49
  50
  51 Settings & Settings::operator = (const Settings &other)
  52 {
  53         if (&other == this)
  54                 return *this;
  55
  56         JMutexAutoLock lock(m_mutex);
  57         JMutexAutoLock lock2(other.m_mutex);
  58
  59         clearNoLock();
  60         updateNoLock(other);
  61
  62         return *this;
  63 }
  64
  65
  66 std::string Settings::getMultiline(std::istream &is, size_t *num_lines)
  67 {
  68         size_t lines = 1;
  69         std::string value;
  70         std::string line;
  71
  72         while (is.good()) {
  73                 lines++;
  74                 std::getline(is, line);
  75                 if (line == "\"\"\"")
  76                         break;
  77                 value += line;
  78                 value.push_back('\n');
  79         }
  80
  81         size_t len = value.size();
  82         if (len)
  83                 value.erase(len - 1);
  84
  85         if (num_lines)
  86                 *num_lines = lines;
  87
  88         return value;
  89 }
  90
  91
  92 bool Settings::readConfigFile(const char *filename)
  93 {
  94         std::ifstream is(filename);
  95         if (!is.good())
  96                 return false;
  97
  98         return parseConfigLines(is, "");
  99 }
 100
 101
 102 bool Settings::parseConfigLines(std::istream &is, const std::string &end)
 103 {
 104         JMutexAutoLock lock(m_mutex);
 105
 106         std::string line, name, value;
 107
 108         while (is.good()) {
 109                 std::getline(is, line);
 110                 SettingsParseEvent event = parseConfigObject(line, end, name, value);
 111
 112                 switch (event) {
 113                 case SPE_NONE:
 114                 case SPE_INVALID:
 115                 case SPE_COMMENT:
 116                         break;
 117                 case SPE_KVPAIR:
 118                         m_settings[name] = SettingsEntry(value);
 119                         break;
 120                 case SPE_END:
 121                         return true;
 122                 case SPE_GROUP: {
 123                         Settings *group = new Settings;
 124                         if (!group->parseConfigLines(is, "}")) {
 125                                 delete group;
 126                                 return false;
 127                         }
 128                         m_settings[name] = SettingsEntry(group);
 129                         break;
 130                 }
 131                 case SPE_MULTILINE:
 132                         m_settings[name] = SettingsEntry(getMultiline(is));
 133                         break;
 134                 }
 135         }
 136
 137         return end.empty();
 138 }
 139
 140
 141 void Settings::writeLines(std::ostream &os, u32 tab_depth) const
 142 {
 143         JMutexAutoLock lock(m_mutex);
 144
 145         for (std::map<std::string, SettingsEntry>::const_iterator
 146                         it = m_settings.begin();
 147                         it != m_settings.end(); ++it)
 148                 printEntry(os, it->first, it->second, tab_depth);
 149 }
 150
 151
 152 void Settings::printEntry(std::ostream &os, const std::string &name,
 153         const SettingsEntry &entry, u32 tab_depth)
 154 {
 155         for (u32 i = 0; i != tab_depth; i++)
 156                 os << "\t";
 157
 158         if (entry.is_group) {
 159                 os << name << " = {\n";
 160
 161                 entry.group->writeLines(os, tab_depth + 1);
 162
 163                 for (u32 i = 0; i != tab_depth; i++)
 164                         os << "\t";
 165                 os << "}\n";
 166         } else {
 167                 os << name << " = ";
 168
 169                 if (entry.value.find('\n') != std::string::npos)
 170                         os << "\"\"\"\n" << entry.value << "\n\"\"\"\n";
 171                 else
 172                         os << entry.value << "\n";
 173         }
 174 }
 175
 176
 177 bool Settings::updateConfigObject(std::istream &is, std::ostream &os,
 178         const std::string &end, u32 tab_depth)
 179 {
 180         std::map<std::string, SettingsEntry>::const_iterator it;
 181         std::set<std::string> present_entries;
 182         std::string line, name, value;
 183         bool was_modified = false;
 184         bool end_found = false;
 185
 186         // Add any settings that exist in the config file with the current value
 187         // in the object if existing
 188         while (is.good() && !end_found) {
 189                 std::getline(is, line);
 190                 SettingsParseEvent event = parseConfigObject(line, end, name, value);
 191
 192                 switch (event) {
 193                 case SPE_END:
 194                         os << line << (is.eof() ? "" : "\n");
 195                         end_found = true;
 196                         break;
 197                 case SPE_MULTILINE:
 198                         value = getMultiline(is);
 199                         /* FALLTHROUGH */
 200                 case SPE_KVPAIR:
 201                         it = m_settings.find(name);
 202                         if (it != m_settings.end() &&
 203                                 (it->second.is_group || it->second.value != value)) {
 204                                 printEntry(os, name, it->second, tab_depth);
 205                                 was_modified = true;
 206                         } else {
 207                                 assert(it->second.group == NULL);
 208                                 os << line << "\n";
 209                                 if (event == SPE_MULTILINE)
 210                                         os << value << "\n\"\"\"\n";
 211                         }
 212                         present_entries.insert(name);
 213                         break;
 214                 case SPE_GROUP:
 215                         it = m_settings.find(name);
 216                         if (it != m_settings.end() && it->second.is_group) {
 217                                 os << line << "\n";
 218                                 assert(it->second.group != NULL);
 219                                 was_modified |= it->second.group->updateConfigObject(is, os,
 220                                         "}", tab_depth + 1);
 221                         } else {
 222                                 printEntry(os, name, it->second, tab_depth);
 223                                 was_modified = true;
 224                         }
 225                         present_entries.insert(name);
 226                         break;
 227                 default:
 228                         os << line << (is.eof() ? "" : "\n");
 229                         break;
 230                 }
 231         }
 232
 233         // Add any settings in the object that don't exist in the config file yet
 234         for (it = m_settings.begin(); it != m_settings.end(); ++it) {
 235                 if (present_entries.find(it->first) != present_entries.end())
 236                         continue;
 237
 238                 printEntry(os, it->first, it->second, tab_depth);
 239                 was_modified = true;
 240         }
 241
 242         return was_modified;
 243 }
 244
 245
 246 bool Settings::updateConfigFile(const char *filename)
 247 {
 248         JMutexAutoLock lock(m_mutex);
 249
 250         std::ifstream is(filename);
 251         std::ostringstream os(std::ios_base::binary);
 252
 253         bool was_modified = updateConfigObject(is, os, "");
 254         is.close();
 255
 256         if (!was_modified)
 257                 return true;
 258
 259         if (!fs::safeWriteToFile(filename, os.str())) {
 260                 errorstream << "Error writing configuration file: \""
 261                         << filename << "\"" << std::endl;
 262                 return false;
 263         }
 264
 265         return true;
 266 }
 267
 268
 269 bool Settings::parseCommandLine(int argc, char *argv[],
 270                 std::map<std::string, ValueSpec> &allowed_options)
 271 {
 272         int nonopt_index = 0;
 273         for (int i = 1; i < argc; i++) {
 274                 std::string arg_name = argv[i];
 275                 if (arg_name.substr(0, 2) != "--") {
 276                         // If option doesn't start with -, read it in as nonoptX
 277                         if (arg_name[0] != '-'){
 278                                 std::string name = "nonopt";
 279                                 name += itos(nonopt_index);
 280                                 set(name, arg_name);
 281                                 nonopt_index++;
 282                                 continue;
 283                         }
 284                         errorstream << "Invalid command-line parameter \""
 285                                         << arg_name << "\": --<option> expected." << std::endl;
 286                         return false;
 287                 }
 288
 289                 std::string name = arg_name.substr(2);
 290
 291                 std::map<std::string, ValueSpec>::iterator n;
 292                 n = allowed_options.find(name);
 293                 if (n == allowed_options.end()) {
 294                         errorstream << "Unknown command-line parameter \""
 295                                         << arg_name << "\"" << std::endl;
 296                         return false;
 297                 }
 298
 299                 ValueType type = n->second.type;
 300
 301                 std::string value = "";
 302
 303                 if (type == VALUETYPE_FLAG) {
 304                         value = "true";
 305                 } else {
 306                         if ((i + 1) >= argc) {
 307                                 errorstream << "Invalid command-line parameter \""
 308                                                 << name << "\": missing value" << std::endl;
 309                                 return false;
 310                         }
 311                         value = argv[++i];
 312                 }
 313
 314                 set(name, value);
 315         }
 316
 317         return true;
 318 }
 319
 320
 321
 322 /***********
 323  * Getters *
 324  ***********/
 325
 326
 327 const SettingsEntry &Settings::getEntry(const std::string &name) const
 328 {
 329         JMutexAutoLock lock(m_mutex);
 330
 331         std::map<std::string, SettingsEntry>::const_iterator n;
 332         if ((n = m_settings.find(name)) == m_settings.end()) {
 333                 if ((n = m_defaults.find(name)) == m_defaults.end())
 334                         throw SettingNotFoundException("Setting [" + name + "] not found.");
 335         }
 336         return n->second;
 337 }
 338
 339
 340 Settings *Settings::getGroup(const std::string &name) const
 341 {
 342         const SettingsEntry &entry = getEntry(name);
 343         if (!entry.is_group)
 344                 throw SettingNotFoundException("Setting [" + name + "] is not a group.");
 345         return entry.group;
 346 }
 347
 348
 349 std::string Settings::get(const std::string &name) const
 350 {
 351         const SettingsEntry &entry = getEntry(name);
 352         if (entry.is_group)
 353                 throw SettingNotFoundException("Setting [" + name + "] is a group.");
 354         return entry.value;
 355 }
 356
 357
 358 bool Settings::getBool(const std::string &name) const
 359 {
 360         return is_yes(get(name));
 361 }
 362
 363
 364 u16 Settings::getU16(const std::string &name) const
 365 {
 366         return stoi(get(name), 0, 65535);
 367 }
 368
 369
 370 s16 Settings::getS16(const std::string &name) const
 371 {
 372         return stoi(get(name), -32768, 32767);
 373 }
 374
 375
 376 s32 Settings::getS32(const std::string &name) const
 377 {
 378         return stoi(get(name));
 379 }
 380
 381
 382 float Settings::getFloat(const std::string &name) const
 383 {
 384         return stof(get(name));
 385 }
 386
 387
 388 u64 Settings::getU64(const std::string &name) const
 389 {
 390         u64 value = 0;
 391         std::string s = get(name);
 392         std::istringstream ss(s);
 393         ss >> value;
 394         return value;
 395 }
 396
 397
 398 v2f Settings::getV2F(const std::string &name) const
 399 {
 400         v2f value;
 401         Strfnd f(get(name));
 402         f.next("(");
 403         value.X = stof(f.next(","));
 404         value.Y = stof(f.next(")"));
 405         return value;
 406 }
 407
 408
 409 v3f Settings::getV3F(const std::string &name) const
 410 {
 411         v3f value;
 412         Strfnd f(get(name));
 413         f.next("(");
 414         value.X = stof(f.next(","));
 415         value.Y = stof(f.next(","));
 416         value.Z = stof(f.next(")"));
 417         return value;
 418 }
 419
 420
 421 u32 Settings::getFlagStr(const std::string &name, const FlagDesc *flagdesc,
 422         u32 *flagmask) const
 423 {
 424         std::string val = get(name);
 425         return std::isdigit(val[0])
 426                 ? stoi(val)
 427                 : readFlagString(val, flagdesc, flagmask);
 428 }
 429
 430
 431 // N.B. if getStruct() is used to read a non-POD aggregate type,
 432 // the behavior is undefined.
 433 bool Settings::getStruct(const std::string &name, const std::string &format,
 434         void *out, size_t olen) const
 435 {
 436         std::string valstr;
 437
 438         try {
 439                 valstr = get(name);
 440         } catch (SettingNotFoundException &e) {
 441                 return false;
 442         }
 443
 444         if (!deSerializeStringToStruct(valstr, format, out, olen))
 445                 return false;
 446
 447         return true;
 448 }
 449
 450
 451 bool Settings::getNoiseParams(const std::string &name, NoiseParams &np) const
 452 {
 453         return getNoiseParamsFromGroup(name, np) || getNoiseParamsFromValue(name, np);
 454 }
 455
 456
 457 bool Settings::getNoiseParamsFromValue(const std::string &name,
 458         NoiseParams &np) const
 459 {
 460         std::string value;
 461
 462         if (!getNoEx(name, value))
 463                 return false;
 464
 465         Strfnd f(value);
 466
 467         np.offset   = stof(f.next(","));
 468         np.scale    = stof(f.next(","));
 469         f.next("(");
 470         np.spread.X = stof(f.next(","));
 471         np.spread.Y = stof(f.next(","));
 472         np.spread.Z = stof(f.next(")"));
 473         f.next(",");
 474         np.seed     = stoi(f.next(","));
 475         np.octaves  = stoi(f.next(","));
 476         np.persist  = stof(f.next(""));
 477
 478         return true;
 479 }
 480
 481
 482 bool Settings::getNoiseParamsFromGroup(const std::string &name,
 483         NoiseParams &np) const
 484 {
 485         Settings *group = NULL;
 486
 487         if (!getGroupNoEx(name, group))
 488                 return false;
 489
 490         group->getFloatNoEx("offset",      np.offset);
 491         group->getFloatNoEx("scale",       np.scale);
 492         group->getV3FNoEx("spread",        np.spread);
 493         group->getS32NoEx("seed",          np.seed);
 494         group->getU16NoEx("octaves",       np.octaves);
 495         group->getFloatNoEx("persistence", np.persist);
 496         group->getFloatNoEx("lacunarity",  np.lacunarity);
 497
 498         np.flags = 0;
 499         if (!group->getFlagStrNoEx("flags", np.flags, flagdesc_noiseparams))
 500                 np.flags = NOISE_FLAG_DEFAULTS;
 501
 502         return true;
 503 }
 504
 505
 506 bool Settings::exists(const std::string &name) const
 507 {
 508         JMutexAutoLock lock(m_mutex);
 509
 510         return (m_settings.find(name) != m_settings.end() ||
 511                 m_defaults.find(name) != m_defaults.end());
 512 }
 513
 514
 515 std::vector<std::string> Settings::getNames() const
 516 {
 517         std::vector<std::string> names;
 518         for (std::map<std::string, SettingsEntry>::const_iterator
 519                         i = m_settings.begin();
 520                         i != m_settings.end(); ++i) {
 521                 names.push_back(i->first);
 522         }
 523         return names;
 524 }
 525
 526
 527
 528 /***************************************
 529  * Getters that don't throw exceptions *
 530  ***************************************/
 531
 532 bool Settings::getEntryNoEx(const std::string &name, SettingsEntry &val) const
 533 {
 534         try {
 535                 val = getEntry(name);
 536                 return true;
 537         } catch (SettingNotFoundException &e) {
 538                 return false;
 539         }
 540 }
 541
 542
 543 bool Settings::getGroupNoEx(const std::string &name, Settings *&val) const
 544 {
 545         try {
 546                 val = getGroup(name);
 547                 return true;
 548         } catch (SettingNotFoundException &e) {
 549                 return false;
 550         }
 551 }
 552
 553
 554 bool Settings::getNoEx(const std::string &name, std::string &val) const
 555 {
 556         try {
 557                 val = get(name);
 558                 return true;
 559         } catch (SettingNotFoundException &e) {
 560                 return false;
 561         }
 562 }
 563
 564
 565 bool Settings::getFlag(const std::string &name) const
 566 {
 567         try {
 568                 return getBool(name);
 569         } catch(SettingNotFoundException &e) {
 570                 return false;
 571         }
 572 }
 573
 574
 575 bool Settings::getFloatNoEx(const std::string &name, float &val) const
 576 {
 577         try {
 578                 val = getFloat(name);
 579                 return true;
 580         } catch (SettingNotFoundException &e) {
 581                 return false;
 582         }
 583 }
 584
 585
 586 bool Settings::getU16NoEx(const std::string &name, u16 &val) const
 587 {
 588         try {
 589                 val = getU16(name);
 590                 return true;
 591         } catch (SettingNotFoundException &e) {
 592                 return false;
 593         }
 594 }
 595
 596
 597 bool Settings::getS16NoEx(const std::string &name, s16 &val) const
 598 {
 599         try {
 600                 val = getS16(name);
 601                 return true;
 602         } catch (SettingNotFoundException &e) {
 603                 return false;
 604         }
 605 }
 606
 607
 608 bool Settings::getS32NoEx(const std::string &name, s32 &val) const
 609 {
 610         try {
 611                 val = getS32(name);
 612                 return true;
 613         } catch (SettingNotFoundException &e) {
 614                 return false;
 615         }
 616 }
 617
 618
 619 bool Settings::getU64NoEx(const std::string &name, u64 &val) const
 620 {
 621         try {
 622                 val = getU64(name);
 623                 return true;
 624         } catch (SettingNotFoundException &e) {
 625                 return false;
 626         }
 627 }
 628
 629
 630 bool Settings::getV2FNoEx(const std::string &name, v2f &val) const
 631 {
 632         try {
 633                 val = getV2F(name);
 634                 return true;
 635         } catch (SettingNotFoundException &e) {
 636                 return false;
 637         }
 638 }
 639
 640
 641 bool Settings::getV3FNoEx(const std::string &name, v3f &val) const
 642 {
 643         try {
 644                 val = getV3F(name);
 645                 return true;
 646         } catch (SettingNotFoundException &e) {
 647                 return false;
 648         }
 649 }
 650
 651
 652 // N.B. getFlagStrNoEx() does not set val, but merely modifies it.  Thus,
 653 // val must be initialized before using getFlagStrNoEx().  The intention of
 654 // this is to simplify modifying a flags field from a default value.
 655 bool Settings::getFlagStrNoEx(const std::string &name, u32 &val,
 656         FlagDesc *flagdesc) const
 657 {
 658         try {
 659                 u32 flags, flagmask;
 660
 661                 flags = getFlagStr(name, flagdesc, &flagmask);
 662
 663                 val &= ~flagmask;
 664                 val |=  flags;
 665
 666                 return true;
 667         } catch (SettingNotFoundException &e) {
 668                 return false;
 669         }
 670 }
 671
 672
 673 /***********
 674  * Setters *
 675  ***********/
 676
 677 void Settings::setEntry(const std::string &name, const void *data,
 678         bool set_group, bool set_default)
 679 {
 680         Settings *old_group = NULL;
 681
 682         // Strip any potentially dangerous characters from the name (note the value
 683         // has no such restrictions)
 684         std::string n(name);
 685         for (const char *s = "\t\n\v\f\r\b =\""; *s; s++)
 686                 n.erase(std::remove(n.begin(), n.end(), *s), n.end());
 687
 688         {
 689                 JMutexAutoLock lock(m_mutex);
 690
 691                 SettingsEntry &entry = set_default ? m_defaults[n] : m_settings[n];
 692                 old_group = entry.group;
 693
 694                 entry.value    = set_group ? "" : *(const std::string *)data;
 695                 entry.group    = set_group ? *(Settings **)data : NULL;
 696                 entry.is_group = set_group;
 697         }
 698
 699         delete old_group;
 700 }
 701
 702
 703 void Settings::set(const std::string &name, const std::string &value)
 704 {
 705         setEntry(name, &value, false, false);
 706
 707         doCallbacks(name);
 708 }
 709
 710
 711 void Settings::setDefault(const std::string &name, const std::string &value)
 712 {
 713         setEntry(name, &value, false, true);
 714 }
 715
 716
 717 void Settings::setGroup(const std::string &name, Settings *group)
 718 {
 719         setEntry(name, &group, true, false);
 720 }
 721
 722
 723 void Settings::setGroupDefault(const std::string &name, Settings *group)
 724 {
 725         setEntry(name, &group, true, true);
 726 }
 727
 728
 729 void Settings::setBool(const std::string &name, bool value)
 730 {
 731         set(name, value ? "true" : "false");
 732 }
 733
 734
 735 void Settings::setS16(const std::string &name, s16 value)
 736 {
 737         set(name, itos(value));
 738 }
 739
 740
 741 void Settings::setU16(const std::string &name, u16 value)
 742 {
 743         set(name, itos(value));
 744 }
 745
 746
 747 void Settings::setS32(const std::string &name, s32 value)
 748 {
 749         set(name, itos(value));
 750 }
 751
 752
 753 void Settings::setU64(const std::string &name, u64 value)
 754 {
 755         std::ostringstream os;
 756         os << value;
 757         set(name, os.str());
 758 }
 759
 760
 761 void Settings::setFloat(const std::string &name, float value)
 762 {
 763         set(name, ftos(value));
 764 }
 765
 766
 767 void Settings::setV2F(const std::string &name, v2f value)
 768 {
 769         std::ostringstream os;
 770         os << "(" << value.X << "," << value.Y << ")";
 771         set(name, os.str());
 772 }
 773
 774
 775 void Settings::setV3F(const std::string &name, v3f value)
 776 {
 777         std::ostringstream os;
 778         os << "(" << value.X << "," << value.Y << "," << value.Z << ")";
 779         set(name, os.str());
 780 }
 781
 782
 783 void Settings::setFlagStr(const std::string &name, u32 flags,
 784         const FlagDesc *flagdesc, u32 flagmask)
 785 {
 786         set(name, writeFlagString(flags, flagdesc, flagmask));
 787 }
 788
 789
 790 bool Settings::setStruct(const std::string &name, const std::string &format,
 791         void *value)
 792 {
 793         std::string structstr;
 794         if (!serializeStructToString(&structstr, format, value))
 795                 return false;
 796
 797         set(name, structstr);
 798         return true;
 799 }
 800
 801
 802 void Settings::setNoiseParams(const std::string &name,
 803         const NoiseParams &np, bool set_default)
 804 {
 805         Settings *group = new Settings;
 806
 807         group->setFloat("offset",      np.offset);
 808         group->setFloat("scale",       np.scale);
 809         group->setV3F("spread",        np.spread);
 810         group->setS32("seed",          np.seed);
 811         group->setU16("octaves",       np.octaves);
 812         group->setFloat("persistence", np.persist);
 813         group->setFloat("lacunarity",  np.lacunarity);
 814         group->setFlagStr("flags",     np.flags, flagdesc_noiseparams, np.flags);
 815
 816         setEntry(name, &group, true, set_default);
 817 }
 818
 819
 820 bool Settings::remove(const std::string &name)
 821 {
 822         JMutexAutoLock lock(m_mutex);
 823
 824         delete m_settings[name].group;
 825         return m_settings.erase(name);
 826 }
 827
 828
 829 void Settings::clear()
 830 {
 831         JMutexAutoLock lock(m_mutex);
 832         clearNoLock();
 833 }
 834
 835
 836 void Settings::updateValue(const Settings &other, const std::string &name)
 837 {
 838         if (&other == this)
 839                 return;
 840
 841         JMutexAutoLock lock(m_mutex);
 842
 843         try {
 844                 std::string val = other.get(name);
 845
 846                 m_settings[name] = val;
 847         } catch (SettingNotFoundException &e) {
 848         }
 849 }
 850
 851
 852 void Settings::update(const Settings &other)
 853 {
 854         if (&other == this)
 855                 return;
 856
 857         JMutexAutoLock lock(m_mutex);
 858         JMutexAutoLock lock2(other.m_mutex);
 859
 860         updateNoLock(other);
 861 }
 862
 863
 864 SettingsParseEvent Settings::parseConfigObject(const std::string &line,
 865         const std::string &end, std::string &name, std::string &value)
 866 {
 867         std::string trimmed_line = trim(line);
 868
 869         if (trimmed_line.empty())
 870                 return SPE_NONE;
 871         if (trimmed_line[0] == '#')
 872                 return SPE_COMMENT;
 873         if (trimmed_line == end)
 874                 return SPE_END;
 875
 876         size_t pos = trimmed_line.find('=');
 877         if (pos == std::string::npos)
 878                 return SPE_INVALID;
 879
 880         name  = trim(trimmed_line.substr(0, pos));
 881         value = trim(trimmed_line.substr(pos + 1));
 882
 883         if (value == "{")
 884                 return SPE_GROUP;
 885         if (value == "\"\"\"")
 886                 return SPE_MULTILINE;
 887
 888         return SPE_KVPAIR;
 889 }
 890
 891
 892 void Settings::updateNoLock(const Settings &other)
 893 {
 894         m_settings.insert(other.m_settings.begin(), other.m_settings.end());
 895         m_defaults.insert(other.m_defaults.begin(), other.m_defaults.end());
 896 }
 897
 898
 899 void Settings::clearNoLock()
 900 {
 901         std::map<std::string, SettingsEntry>::const_iterator it;
 902         for (it = m_settings.begin(); it != m_settings.end(); ++it)
 903                 delete it->second.group;
 904         m_settings.clear();
 905
 906         for (it = m_defaults.begin(); it != m_defaults.end(); ++it)
 907                 delete it->second.group;
 908         m_defaults.clear();
 909 }
 910
 911
 912 void Settings::registerChangedCallback(std::string name,
 913         setting_changed_callback cbf)
 914 {
 915         m_callbacks[name].push_back(cbf);
 916 }
 917
 918
 919 void Settings::doCallbacks(const std::string name)
 920 {
 921         std::vector<setting_changed_callback> tempvector;
 922         {
 923                 JMutexAutoLock lock(m_mutex);
 924                 if (m_callbacks.find(name) != m_callbacks.end())
 925                 {
 926                         tempvector = m_callbacks[name];
 927                 }
 928         }
 929
 930         std::vector<setting_changed_callback>::iterator iter;
 931         for (iter = tempvector.begin(); iter != tempvector.end(); iter++)
 932         {
 933                 (*iter)(name);
 934         }
 935 }