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 static Settings main_settings;
  37 Settings *g_settings = &main_settings;
  38 std::string g_settings_path;
  39
  40 Settings::~Settings()
  41 {
  42         clear();
  43 }
  44
  45
  46 Settings & Settings::operator += (const Settings &other)
  47 {
  48         update(other);
  49
  50         return *this;
  51 }
  52
  53
  54 Settings & Settings::operator = (const Settings &other)
  55 {
  56         if (&other == this)
  57                 return *this;
  58
  59         JMutexAutoLock lock(m_mutex);
  60         JMutexAutoLock lock2(other.m_mutex);
  61
  62         clearNoLock();
  63         updateNoLock(other);
  64
  65         return *this;
  66 }
  67
  68
  69 bool Settings::checkNameValid(const std::string &name)
  70 {
  71         size_t pos = name.find_first_of("\t\n\v\f\r\b =\"{}#");
  72         if (pos != std::string::npos) {
  73                 errorstream << "Invalid character '" << name[pos]
  74                         << "' found in setting name" << std::endl;
  75                 return false;
  76         }
  77         return true;
  78 }
  79
  80
  81 bool Settings::checkValueValid(const std::string &value)
  82 {
  83         if (value.substr(0, 3) == "\"\"\"" ||
  84                 value.find("\n\"\"\"") != std::string::npos) {
  85                 errorstream << "Invalid character sequence '\"\"\"' found in"
  86                         " setting value" << std::endl;
  87                 return false;
  88         }
  89         return true;
  90 }
  91
  92
  93 std::string Settings::sanitizeName(const std::string &name)
  94 {
  95         std::string n(name);
  96
  97         for (const char *s = "\t\n\v\f\r\b =\"{}#"; *s; s++)
  98                 n.erase(std::remove(n.begin(), n.end(), *s), n.end());
  99
 100         return n;
 101 }
 102
 103
 104 std::string Settings::sanitizeValue(const std::string &value)
 105 {
 106         std::string v(value);
 107         size_t p = 0;
 108
 109         if (v.substr(0, 3) == "\"\"\"")
 110                 v.erase(0, 3);
 111
 112         while ((p = v.find("\n\"\"\"")) != std::string::npos)
 113                 v.erase(p, 4);
 114
 115         return v;
 116 }
 117
 118
 119 std::string Settings::getMultiline(std::istream &is, size_t *num_lines)
 120 {
 121         size_t lines = 1;
 122         std::string value;
 123         std::string line;
 124
 125         while (is.good()) {
 126                 lines++;
 127                 std::getline(is, line);
 128                 if (line == "\"\"\"")
 129                         break;
 130                 value += line;
 131                 value.push_back('\n');
 132         }
 133
 134         size_t len = value.size();
 135         if (len)
 136                 value.erase(len - 1);
 137
 138         if (num_lines)
 139                 *num_lines = lines;
 140
 141         return value;
 142 }
 143
 144
 145 bool Settings::readConfigFile(const char *filename)
 146 {
 147         std::ifstream is(filename);
 148         if (!is.good())
 149                 return false;
 150
 151         return parseConfigLines(is, "");
 152 }
 153
 154
 155 bool Settings::parseConfigLines(std::istream &is, const std::string &end)
 156 {
 157         JMutexAutoLock lock(m_mutex);
 158
 159         std::string line, name, value;
 160
 161         while (is.good()) {
 162                 std::getline(is, line);
 163                 SettingsParseEvent event = parseConfigObject(line, end, name, value);
 164
 165                 switch (event) {
 166                 case SPE_NONE:
 167                 case SPE_INVALID:
 168                 case SPE_COMMENT:
 169                         break;
 170                 case SPE_KVPAIR:
 171                         m_settings[name] = SettingsEntry(value);
 172                         break;
 173                 case SPE_END:
 174                         return true;
 175                 case SPE_GROUP: {
 176                         Settings *group = new Settings;
 177                         if (!group->parseConfigLines(is, "}")) {
 178                                 delete group;
 179                                 return false;
 180                         }
 181                         m_settings[name] = SettingsEntry(group);
 182                         break;
 183                 }
 184                 case SPE_MULTILINE:
 185                         m_settings[name] = SettingsEntry(getMultiline(is));
 186                         break;
 187                 }
 188         }
 189
 190         return end.empty();
 191 }
 192
 193
 194 void Settings::writeLines(std::ostream &os, u32 tab_depth) const
 195 {
 196         JMutexAutoLock lock(m_mutex);
 197
 198         for (std::map<std::string, SettingsEntry>::const_iterator
 199                         it = m_settings.begin();
 200                         it != m_settings.end(); ++it)
 201                 printEntry(os, it->first, it->second, tab_depth);
 202 }
 203
 204
 205 void Settings::printEntry(std::ostream &os, const std::string &name,
 206         const SettingsEntry &entry, u32 tab_depth)
 207 {
 208         for (u32 i = 0; i != tab_depth; i++)
 209                 os << "\t";
 210
 211         if (entry.is_group) {
 212                 os << name << " = {\n";
 213
 214                 entry.group->writeLines(os, tab_depth + 1);
 215
 216                 for (u32 i = 0; i != tab_depth; i++)
 217                         os << "\t";
 218                 os << "}\n";
 219         } else {
 220                 os << name << " = ";
 221
 222                 if (entry.value.find('\n') != std::string::npos)
 223                         os << "\"\"\"\n" << entry.value << "\n\"\"\"\n";
 224                 else
 225                         os << entry.value << "\n";
 226         }
 227 }
 228
 229
 230 bool Settings::updateConfigObject(std::istream &is, std::ostream &os,
 231         const std::string &end, u32 tab_depth)
 232 {
 233         std::map<std::string, SettingsEntry>::const_iterator it;
 234         std::set<std::string> present_entries;
 235         std::string line, name, value;
 236         bool was_modified = false;
 237         bool end_found = false;
 238
 239         // Add any settings that exist in the config file with the current value
 240         // in the object if existing
 241         while (is.good() && !end_found) {
 242                 std::getline(is, line);
 243                 SettingsParseEvent event = parseConfigObject(line, end, name, value);
 244
 245                 switch (event) {
 246                 case SPE_END:
 247                         os << line << (is.eof() ? "" : "\n");
 248                         end_found = true;
 249                         break;
 250                 case SPE_MULTILINE:
 251                         value = getMultiline(is);
 252                         /* FALLTHROUGH */
 253                 case SPE_KVPAIR:
 254                         it = m_settings.find(name);
 255                         if (it != m_settings.end() &&
 256                                 (it->second.is_group || it->second.value != value)) {
 257                                 printEntry(os, name, it->second, tab_depth);
 258                                 was_modified = true;
 259                         } else {
 260                                 os << line << "\n";
 261                                 if (event == SPE_MULTILINE)
 262                                         os << value << "\n\"\"\"\n";
 263                         }
 264                         present_entries.insert(name);
 265                         break;
 266                 case SPE_GROUP:
 267                         it = m_settings.find(name);
 268                         if (it != m_settings.end() && it->second.is_group) {
 269                                 os << line << "\n";
 270                                 sanity_check(it->second.group != NULL);
 271                                 was_modified |= it->second.group->updateConfigObject(is, os,
 272                                         "}", tab_depth + 1);
 273                         } else {
 274                                 printEntry(os, name, it->second, tab_depth);
 275                                 was_modified = true;
 276                         }
 277                         present_entries.insert(name);
 278                         break;
 279                 default:
 280                         os << line << (is.eof() ? "" : "\n");
 281                         break;
 282                 }
 283         }
 284
 285         // Add any settings in the object that don't exist in the config file yet
 286         for (it = m_settings.begin(); it != m_settings.end(); ++it) {
 287                 if (present_entries.find(it->first) != present_entries.end())
 288                         continue;
 289
 290                 printEntry(os, it->first, it->second, tab_depth);
 291                 was_modified = true;
 292         }
 293
 294         return was_modified;
 295 }
 296
 297
 298 bool Settings::updateConfigFile(const char *filename)
 299 {
 300         JMutexAutoLock lock(m_mutex);
 301
 302         std::ifstream is(filename);
 303         std::ostringstream os(std::ios_base::binary);
 304
 305         bool was_modified = updateConfigObject(is, os, "");
 306         is.close();
 307
 308         if (!was_modified)
 309                 return true;
 310
 311         if (!fs::safeWriteToFile(filename, os.str())) {
 312                 errorstream << "Error writing configuration file: \""
 313                         << filename << "\"" << std::endl;
 314                 return false;
 315         }
 316
 317         return true;
 318 }
 319
 320
 321 bool Settings::parseCommandLine(int argc, char *argv[],
 322                 std::map<std::string, ValueSpec> &allowed_options)
 323 {
 324         int nonopt_index = 0;
 325         for (int i = 1; i < argc; i++) {
 326                 std::string arg_name = argv[i];
 327                 if (arg_name.substr(0, 2) != "--") {
 328                         // If option doesn't start with -, read it in as nonoptX
 329                         if (arg_name[0] != '-'){
 330                                 std::string name = "nonopt";
 331                                 name += itos(nonopt_index);
 332                                 set(name, arg_name);
 333                                 nonopt_index++;
 334                                 continue;
 335                         }
 336                         errorstream << "Invalid command-line parameter \""
 337                                         << arg_name << "\": --<option> expected." << std::endl;
 338                         return false;
 339                 }
 340
 341                 std::string name = arg_name.substr(2);
 342
 343                 std::map<std::string, ValueSpec>::iterator n;
 344                 n = allowed_options.find(name);
 345                 if (n == allowed_options.end()) {
 346                         errorstream << "Unknown command-line parameter \""
 347                                         << arg_name << "\"" << std::endl;
 348                         return false;
 349                 }
 350
 351                 ValueType type = n->second.type;
 352
 353                 std::string value = "";
 354
 355                 if (type == VALUETYPE_FLAG) {
 356                         value = "true";
 357                 } else {
 358                         if ((i + 1) >= argc) {
 359                                 errorstream << "Invalid command-line parameter \""
 360                                                 << name << "\": missing value" << std::endl;
 361                                 return false;
 362                         }
 363                         value = argv[++i];
 364                 }
 365
 366                 set(name, value);
 367         }
 368
 369         return true;
 370 }
 371
 372
 373
 374 /***********
 375  * Getters *
 376  ***********/
 377
 378
 379 const SettingsEntry &Settings::getEntry(const std::string &name) const
 380 {
 381         JMutexAutoLock lock(m_mutex);
 382
 383         std::map<std::string, SettingsEntry>::const_iterator n;
 384         if ((n = m_settings.find(name)) == m_settings.end()) {
 385                 if ((n = m_defaults.find(name)) == m_defaults.end())
 386                         throw SettingNotFoundException("Setting [" + name + "] not found.");
 387         }
 388         return n->second;
 389 }
 390
 391
 392 Settings *Settings::getGroup(const std::string &name) const
 393 {
 394         const SettingsEntry &entry = getEntry(name);
 395         if (!entry.is_group)
 396                 throw SettingNotFoundException("Setting [" + name + "] is not a group.");
 397         return entry.group;
 398 }
 399
 400
 401 std::string Settings::get(const std::string &name) const
 402 {
 403         const SettingsEntry &entry = getEntry(name);
 404         if (entry.is_group)
 405                 throw SettingNotFoundException("Setting [" + name + "] is a group.");
 406         return entry.value;
 407 }
 408
 409
 410 bool Settings::getBool(const std::string &name) const
 411 {
 412         return is_yes(get(name));
 413 }
 414
 415
 416 u16 Settings::getU16(const std::string &name) const
 417 {
 418         return stoi(get(name), 0, 65535);
 419 }
 420
 421
 422 s16 Settings::getS16(const std::string &name) const
 423 {
 424         return stoi(get(name), -32768, 32767);
 425 }
 426
 427
 428 s32 Settings::getS32(const std::string &name) const
 429 {
 430         return stoi(get(name));
 431 }
 432
 433
 434 float Settings::getFloat(const std::string &name) const
 435 {
 436         return stof(get(name));
 437 }
 438
 439
 440 u64 Settings::getU64(const std::string &name) const
 441 {
 442         u64 value = 0;
 443         std::string s = get(name);
 444         std::istringstream ss(s);
 445         ss >> value;
 446         return value;
 447 }
 448
 449
 450 v2f Settings::getV2F(const std::string &name) const
 451 {
 452         v2f value;
 453         Strfnd f(get(name));
 454         f.next("(");
 455         value.X = stof(f.next(","));
 456         value.Y = stof(f.next(")"));
 457         return value;
 458 }
 459
 460
 461 v3f Settings::getV3F(const std::string &name) const
 462 {
 463         v3f value;
 464         Strfnd f(get(name));
 465         f.next("(");
 466         value.X = stof(f.next(","));
 467         value.Y = stof(f.next(","));
 468         value.Z = stof(f.next(")"));
 469         return value;
 470 }
 471
 472
 473 u32 Settings::getFlagStr(const std::string &name, const FlagDesc *flagdesc,
 474         u32 *flagmask) const
 475 {
 476         std::string val = get(name);
 477         return std::isdigit(val[0])
 478                 ? stoi(val)
 479                 : readFlagString(val, flagdesc, flagmask);
 480 }
 481
 482
 483 // N.B. if getStruct() is used to read a non-POD aggregate type,
 484 // the behavior is undefined.
 485 bool Settings::getStruct(const std::string &name, const std::string &format,
 486         void *out, size_t olen) const
 487 {
 488         std::string valstr;
 489
 490         try {
 491                 valstr = get(name);
 492         } catch (SettingNotFoundException &e) {
 493                 return false;
 494         }
 495
 496         if (!deSerializeStringToStruct(valstr, format, out, olen))
 497                 return false;
 498
 499         return true;
 500 }
 501
 502
 503 bool Settings::getNoiseParams(const std::string &name, NoiseParams &np) const
 504 {
 505         return getNoiseParamsFromGroup(name, np) || getNoiseParamsFromValue(name, np);
 506 }
 507
 508
 509 bool Settings::getNoiseParamsFromValue(const std::string &name,
 510         NoiseParams &np) const
 511 {
 512         std::string value;
 513
 514         if (!getNoEx(name, value))
 515                 return false;
 516
 517         Strfnd f(value);
 518
 519         np.offset   = stof(f.next(","));
 520         np.scale    = stof(f.next(","));
 521         f.next("(");
 522         np.spread.X = stof(f.next(","));
 523         np.spread.Y = stof(f.next(","));
 524         np.spread.Z = stof(f.next(")"));
 525         f.next(",");
 526         np.seed     = stoi(f.next(","));
 527         np.octaves  = stoi(f.next(","));
 528         np.persist  = stof(f.next(","));
 529
 530         std::string optional_params = f.next("");
 531         if (optional_params != "")
 532                 np.lacunarity = stof(optional_params);
 533
 534         return true;
 535 }
 536
 537
 538 bool Settings::getNoiseParamsFromGroup(const std::string &name,
 539         NoiseParams &np) const
 540 {
 541         Settings *group = NULL;
 542
 543         if (!getGroupNoEx(name, group))
 544                 return false;
 545
 546         group->getFloatNoEx("offset",      np.offset);
 547         group->getFloatNoEx("scale",       np.scale);
 548         group->getV3FNoEx("spread",        np.spread);
 549         group->getS32NoEx("seed",          np.seed);
 550         group->getU16NoEx("octaves",       np.octaves);
 551         group->getFloatNoEx("persistence", np.persist);
 552         group->getFloatNoEx("lacunarity",  np.lacunarity);
 553
 554         np.flags = 0;
 555         if (!group->getFlagStrNoEx("flags", np.flags, flagdesc_noiseparams))
 556                 np.flags = NOISE_FLAG_DEFAULTS;
 557
 558         return true;
 559 }
 560
 561
 562 bool Settings::exists(const std::string &name) const
 563 {
 564         JMutexAutoLock lock(m_mutex);
 565
 566         return (m_settings.find(name) != m_settings.end() ||
 567                 m_defaults.find(name) != m_defaults.end());
 568 }
 569
 570
 571 std::vector<std::string> Settings::getNames() const
 572 {
 573         std::vector<std::string> names;
 574         for (std::map<std::string, SettingsEntry>::const_iterator
 575                         i = m_settings.begin();
 576                         i != m_settings.end(); ++i) {
 577                 names.push_back(i->first);
 578         }
 579         return names;
 580 }
 581
 582
 583
 584 /***************************************
 585  * Getters that don't throw exceptions *
 586  ***************************************/
 587
 588 bool Settings::getEntryNoEx(const std::string &name, SettingsEntry &val) const
 589 {
 590         try {
 591                 val = getEntry(name);
 592                 return true;
 593         } catch (SettingNotFoundException &e) {
 594                 return false;
 595         }
 596 }
 597
 598
 599 bool Settings::getGroupNoEx(const std::string &name, Settings *&val) const
 600 {
 601         try {
 602                 val = getGroup(name);
 603                 return true;
 604         } catch (SettingNotFoundException &e) {
 605                 return false;
 606         }
 607 }
 608
 609
 610 bool Settings::getNoEx(const std::string &name, std::string &val) const
 611 {
 612         try {
 613                 val = get(name);
 614                 return true;
 615         } catch (SettingNotFoundException &e) {
 616                 return false;
 617         }
 618 }
 619
 620
 621 bool Settings::getFlag(const std::string &name) const
 622 {
 623         try {
 624                 return getBool(name);
 625         } catch(SettingNotFoundException &e) {
 626                 return false;
 627         }
 628 }
 629
 630
 631 bool Settings::getFloatNoEx(const std::string &name, float &val) const
 632 {
 633         try {
 634                 val = getFloat(name);
 635                 return true;
 636         } catch (SettingNotFoundException &e) {
 637                 return false;
 638         }
 639 }
 640
 641
 642 bool Settings::getU16NoEx(const std::string &name, u16 &val) const
 643 {
 644         try {
 645                 val = getU16(name);
 646                 return true;
 647         } catch (SettingNotFoundException &e) {
 648                 return false;
 649         }
 650 }
 651
 652
 653 bool Settings::getS16NoEx(const std::string &name, s16 &val) const
 654 {
 655         try {
 656                 val = getS16(name);
 657                 return true;
 658         } catch (SettingNotFoundException &e) {
 659                 return false;
 660         }
 661 }
 662
 663
 664 bool Settings::getS32NoEx(const std::string &name, s32 &val) const
 665 {
 666         try {
 667                 val = getS32(name);
 668                 return true;
 669         } catch (SettingNotFoundException &e) {
 670                 return false;
 671         }
 672 }
 673
 674
 675 bool Settings::getU64NoEx(const std::string &name, u64 &val) const
 676 {
 677         try {
 678                 val = getU64(name);
 679                 return true;
 680         } catch (SettingNotFoundException &e) {
 681                 return false;
 682         }
 683 }
 684
 685
 686 bool Settings::getV2FNoEx(const std::string &name, v2f &val) const
 687 {
 688         try {
 689                 val = getV2F(name);
 690                 return true;
 691         } catch (SettingNotFoundException &e) {
 692                 return false;
 693         }
 694 }
 695
 696
 697 bool Settings::getV3FNoEx(const std::string &name, v3f &val) const
 698 {
 699         try {
 700                 val = getV3F(name);
 701                 return true;
 702         } catch (SettingNotFoundException &e) {
 703                 return false;
 704         }
 705 }
 706
 707
 708 // N.B. getFlagStrNoEx() does not set val, but merely modifies it.  Thus,
 709 // val must be initialized before using getFlagStrNoEx().  The intention of
 710 // this is to simplify modifying a flags field from a default value.
 711 bool Settings::getFlagStrNoEx(const std::string &name, u32 &val,
 712         FlagDesc *flagdesc) const
 713 {
 714         try {
 715                 u32 flags, flagmask;
 716
 717                 flags = getFlagStr(name, flagdesc, &flagmask);
 718
 719                 val &= ~flagmask;
 720                 val |=  flags;
 721
 722                 return true;
 723         } catch (SettingNotFoundException &e) {
 724                 return false;
 725         }
 726 }
 727
 728
 729 /***********
 730  * Setters *
 731  ***********/
 732
 733 bool Settings::setEntry(const std::string &name, const void *data,
 734         bool set_group, bool set_default)
 735 {
 736         Settings *old_group = NULL;
 737
 738         if (!checkNameValid(name))
 739                 return false;
 740         if (!set_group && !checkValueValid(*(const std::string *)data))
 741                 return false;
 742
 743         {
 744                 JMutexAutoLock lock(m_mutex);
 745
 746                 SettingsEntry &entry = set_default ? m_defaults[name] : m_settings[name];
 747                 old_group = entry.group;
 748
 749                 entry.value    = set_group ? "" : *(const std::string *)data;
 750                 entry.group    = set_group ? *(Settings **)data : NULL;
 751                 entry.is_group = set_group;
 752         }
 753
 754         delete old_group;
 755
 756         return true;
 757 }
 758
 759
 760 bool Settings::set(const std::string &name, const std::string &value)
 761 {
 762         if (!setEntry(name, &value, false, false))
 763                 return false;
 764
 765         doCallbacks(name);
 766         return true;
 767 }
 768
 769
 770 bool Settings::setDefault(const std::string &name, const std::string &value)
 771 {
 772         return setEntry(name, &value, false, true);
 773 }
 774
 775
 776 bool Settings::setGroup(const std::string &name, Settings *group)
 777 {
 778         return setEntry(name, &group, true, false);
 779 }
 780
 781
 782 bool Settings::setGroupDefault(const std::string &name, Settings *group)
 783 {
 784         return setEntry(name, &group, true, true);
 785 }
 786
 787
 788 bool Settings::setBool(const std::string &name, bool value)
 789 {
 790         return set(name, value ? "true" : "false");
 791 }
 792
 793
 794 bool Settings::setS16(const std::string &name, s16 value)
 795 {
 796         return set(name, itos(value));
 797 }
 798
 799
 800 bool Settings::setU16(const std::string &name, u16 value)
 801 {
 802         return set(name, itos(value));
 803 }
 804
 805
 806 bool Settings::setS32(const std::string &name, s32 value)
 807 {
 808         return set(name, itos(value));
 809 }
 810
 811
 812 bool Settings::setU64(const std::string &name, u64 value)
 813 {
 814         std::ostringstream os;
 815         os << value;
 816         return set(name, os.str());
 817 }
 818
 819
 820 bool Settings::setFloat(const std::string &name, float value)
 821 {
 822         return set(name, ftos(value));
 823 }
 824
 825
 826 bool Settings::setV2F(const std::string &name, v2f value)
 827 {
 828         std::ostringstream os;
 829         os << "(" << value.X << "," << value.Y << ")";
 830         return set(name, os.str());
 831 }
 832
 833
 834 bool Settings::setV3F(const std::string &name, v3f value)
 835 {
 836         std::ostringstream os;
 837         os << "(" << value.X << "," << value.Y << "," << value.Z << ")";
 838         return set(name, os.str());
 839 }
 840
 841
 842 bool Settings::setFlagStr(const std::string &name, u32 flags,
 843         const FlagDesc *flagdesc, u32 flagmask)
 844 {
 845         return set(name, writeFlagString(flags, flagdesc, flagmask));
 846 }
 847
 848
 849 bool Settings::setStruct(const std::string &name, const std::string &format,
 850         void *value)
 851 {
 852         std::string structstr;
 853         if (!serializeStructToString(&structstr, format, value))
 854                 return false;
 855
 856         return set(name, structstr);
 857 }
 858
 859
 860 bool Settings::setNoiseParams(const std::string &name,
 861         const NoiseParams &np, bool set_default)
 862 {
 863         Settings *group = new Settings;
 864
 865         group->setFloat("offset",      np.offset);
 866         group->setFloat("scale",       np.scale);
 867         group->setV3F("spread",        np.spread);
 868         group->setS32("seed",          np.seed);
 869         group->setU16("octaves",       np.octaves);
 870         group->setFloat("persistence", np.persist);
 871         group->setFloat("lacunarity",  np.lacunarity);
 872         group->setFlagStr("flags",     np.flags, flagdesc_noiseparams, np.flags);
 873
 874         return setEntry(name, &group, true, set_default);
 875 }
 876
 877
 878 bool Settings::remove(const std::string &name)
 879 {
 880         JMutexAutoLock lock(m_mutex);
 881
 882         delete m_settings[name].group;
 883         return m_settings.erase(name);
 884 }
 885
 886
 887 void Settings::clear()
 888 {
 889         JMutexAutoLock lock(m_mutex);
 890         clearNoLock();
 891 }
 892
 893 void Settings::clearDefaults()
 894 {
 895         JMutexAutoLock lock(m_mutex);
 896         clearDefaultsNoLock();
 897 }
 898
 899 void Settings::updateValue(const Settings &other, const std::string &name)
 900 {
 901         if (&other == this)
 902                 return;
 903
 904         JMutexAutoLock lock(m_mutex);
 905
 906         try {
 907                 std::string val = other.get(name);
 908
 909                 m_settings[name] = val;
 910         } catch (SettingNotFoundException &e) {
 911         }
 912 }
 913
 914
 915 void Settings::update(const Settings &other)
 916 {
 917         if (&other == this)
 918                 return;
 919
 920         JMutexAutoLock lock(m_mutex);
 921         JMutexAutoLock lock2(other.m_mutex);
 922
 923         updateNoLock(other);
 924 }
 925
 926
 927 SettingsParseEvent Settings::parseConfigObject(const std::string &line,
 928         const std::string &end, std::string &name, std::string &value)
 929 {
 930         std::string trimmed_line = trim(line);
 931
 932         if (trimmed_line.empty())
 933                 return SPE_NONE;
 934         if (trimmed_line[0] == '#')
 935                 return SPE_COMMENT;
 936         if (trimmed_line == end)
 937                 return SPE_END;
 938
 939         size_t pos = trimmed_line.find('=');
 940         if (pos == std::string::npos)
 941                 return SPE_INVALID;
 942
 943         name  = trim(trimmed_line.substr(0, pos));
 944         value = trim(trimmed_line.substr(pos + 1));
 945
 946         if (value == "{")
 947                 return SPE_GROUP;
 948         if (value == "\"\"\"")
 949                 return SPE_MULTILINE;
 950
 951         return SPE_KVPAIR;
 952 }
 953
 954
 955 void Settings::updateNoLock(const Settings &other)
 956 {
 957         m_settings.insert(other.m_settings.begin(), other.m_settings.end());
 958         m_defaults.insert(other.m_defaults.begin(), other.m_defaults.end());
 959 }
 960
 961
 962 void Settings::clearNoLock()
 963 {
 964         std::map<std::string, SettingsEntry>::const_iterator it;
 965         for (it = m_settings.begin(); it != m_settings.end(); ++it)
 966                 delete it->second.group;
 967         m_settings.clear();
 968
 969         clearDefaultsNoLock();
 970 }
 971
 972 void Settings::clearDefaultsNoLock()
 973 {
 974         std::map<std::string, SettingsEntry>::const_iterator it;
 975         for (it = m_defaults.begin(); it != m_defaults.end(); ++it)
 976                 delete it->second.group;
 977         m_defaults.clear();
 978 }
 979
 980
 981 void Settings::registerChangedCallback(std::string name,
 982         setting_changed_callback cbf, void *userdata)
 983 {
 984         JMutexAutoLock lock(m_callbackMutex);
 985         m_callbacks[name].push_back(std::make_pair(cbf, userdata));
 986 }
 987
 988 void Settings::deregisterChangedCallback(std::string name, setting_changed_callback cbf, void *userdata)
 989 {
 990         JMutexAutoLock lock(m_callbackMutex);
 991         std::map<std::string, std::vector<std::pair<setting_changed_callback, void*> > >::iterator iterToVector = m_callbacks.find(name);
 992         if (iterToVector != m_callbacks.end())
 993         {
 994                 std::vector<std::pair<setting_changed_callback, void*> > &vector = iterToVector->second;
 995
 996                 std::vector<std::pair<setting_changed_callback, void*> >::iterator position =
 997                         std::find(vector.begin(), vector.end(), std::make_pair(cbf, userdata));
 998
 999                 if (position != vector.end())
1000                         vector.erase(position);
1001         }
1002 }
1003
1004 void Settings::doCallbacks(const std::string name)
1005 {
1006         JMutexAutoLock lock(m_callbackMutex);
1007         std::map<std::string, std::vector<std::pair<setting_changed_callback, void*> > >::iterator iterToVector = m_callbacks.find(name);
1008         if (iterToVector != m_callbacks.end())
1009         {
1010                 std::vector<std::pair<setting_changed_callback, void*> >::iterator iter;
1011                 for (iter = iterToVector->second.begin(); iter != iterToVector->second.end(); iter++)
1012                 {
1013                         (iter->first)(name, iter->second);
1014                 }
1015         }
1016 }