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 "threading/mutex_auto_lock.h"
  24 #include "util/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         MutexAutoLock lock(m_mutex);
  60         MutexAutoLock 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         bool valid = name.find_first_of("=\"{}#") == std::string::npos;
  72         if (valid) valid = trim(name) == name;
  73         if (!valid) {
  74                 errorstream << "Invalid setting name \"" << name << "\""
  75                         << std::endl;
  76                 return false;
  77         }
  78         return true;
  79 }
  80
  81
  82 bool Settings::checkValueValid(const std::string &value)
  83 {
  84         if (value.substr(0, 3) == "\"\"\"" ||
  85                 value.find("\n\"\"\"") != std::string::npos) {
  86                 errorstream << "Invalid character sequence '\"\"\"' found in"
  87                         " setting value!" << std::endl;
  88                 return false;
  89         }
  90         return true;
  91 }
  92
  93
  94 std::string Settings::sanitizeName(const std::string &name)
  95 {
  96         std::string n = trim(name);
  97
  98         for (const char *s = "=\"{}#"; *s; s++)
  99                 n.erase(std::remove(n.begin(), n.end(), *s), n.end());
 100
 101         return n;
 102 }
 103
 104
 105 std::string Settings::sanitizeValue(const std::string &value)
 106 {
 107         std::string v(value);
 108         size_t p = 0;
 109
 110         if (v.substr(0, 3) == "\"\"\"")
 111                 v.erase(0, 3);
 112
 113         while ((p = v.find("\n\"\"\"")) != std::string::npos)
 114                 v.erase(p, 4);
 115
 116         return v;
 117 }
 118
 119
 120 std::string Settings::getMultiline(std::istream &is, size_t *num_lines)
 121 {
 122         size_t lines = 1;
 123         std::string value;
 124         std::string line;
 125
 126         while (is.good()) {
 127                 lines++;
 128                 std::getline(is, line);
 129                 if (line == "\"\"\"")
 130                         break;
 131                 value += line;
 132                 value.push_back('\n');
 133         }
 134
 135         size_t len = value.size();
 136         if (len)
 137                 value.erase(len - 1);
 138
 139         if (num_lines)
 140                 *num_lines = lines;
 141
 142         return value;
 143 }
 144
 145
 146 bool Settings::readConfigFile(const char *filename)
 147 {
 148         std::ifstream is(filename);
 149         if (!is.good())
 150                 return false;
 151
 152         return parseConfigLines(is, "");
 153 }
 154
 155
 156 bool Settings::parseConfigLines(std::istream &is, const std::string &end)
 157 {
 158         MutexAutoLock lock(m_mutex);
 159
 160         std::string line, name, value;
 161
 162         while (is.good()) {
 163                 std::getline(is, line);
 164                 SettingsParseEvent event = parseConfigObject(line, end, name, value);
 165
 166                 switch (event) {
 167                 case SPE_NONE:
 168                 case SPE_INVALID:
 169                 case SPE_COMMENT:
 170                         break;
 171                 case SPE_KVPAIR:
 172                         m_settings[name] = SettingsEntry(value);
 173                         break;
 174                 case SPE_END:
 175                         return true;
 176                 case SPE_GROUP: {
 177                         Settings *group = new Settings;
 178                         if (!group->parseConfigLines(is, "}")) {
 179                                 delete group;
 180                                 return false;
 181                         }
 182                         m_settings[name] = SettingsEntry(group);
 183                         break;
 184                 }
 185                 case SPE_MULTILINE:
 186                         m_settings[name] = SettingsEntry(getMultiline(is));
 187                         break;
 188                 }
 189         }
 190
 191         return end.empty();
 192 }
 193
 194
 195 void Settings::writeLines(std::ostream &os, u32 tab_depth) const
 196 {
 197         MutexAutoLock lock(m_mutex);
 198
 199         for (SettingEntries::const_iterator 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         SettingEntries::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         MutexAutoLock 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         MutexAutoLock lock(m_mutex);
 382
 383         SettingEntries::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         MutexAutoLock 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 (SettingEntries::const_iterator i = m_settings.begin();
 575                         i != m_settings.end(); ++i) {
 576                 names.push_back(i->first);
 577         }
 578         return names;
 579 }
 580
 581
 582
 583 /***************************************
 584  * Getters that don't throw exceptions *
 585  ***************************************/
 586
 587 bool Settings::getEntryNoEx(const std::string &name, SettingsEntry &val) const
 588 {
 589         try {
 590                 val = getEntry(name);
 591                 return true;
 592         } catch (SettingNotFoundException &e) {
 593                 return false;
 594         }
 595 }
 596
 597
 598 bool Settings::getGroupNoEx(const std::string &name, Settings *&val) const
 599 {
 600         try {
 601                 val = getGroup(name);
 602                 return true;
 603         } catch (SettingNotFoundException &e) {
 604                 return false;
 605         }
 606 }
 607
 608
 609 bool Settings::getNoEx(const std::string &name, std::string &val) const
 610 {
 611         try {
 612                 val = get(name);
 613                 return true;
 614         } catch (SettingNotFoundException &e) {
 615                 return false;
 616         }
 617 }
 618
 619
 620 bool Settings::getFlag(const std::string &name) const
 621 {
 622         try {
 623                 return getBool(name);
 624         } catch(SettingNotFoundException &e) {
 625                 return false;
 626         }
 627 }
 628
 629
 630 bool Settings::getFloatNoEx(const std::string &name, float &val) const
 631 {
 632         try {
 633                 val = getFloat(name);
 634                 return true;
 635         } catch (SettingNotFoundException &e) {
 636                 return false;
 637         }
 638 }
 639
 640
 641 bool Settings::getU16NoEx(const std::string &name, u16 &val) const
 642 {
 643         try {
 644                 val = getU16(name);
 645                 return true;
 646         } catch (SettingNotFoundException &e) {
 647                 return false;
 648         }
 649 }
 650
 651
 652 bool Settings::getS16NoEx(const std::string &name, s16 &val) const
 653 {
 654         try {
 655                 val = getS16(name);
 656                 return true;
 657         } catch (SettingNotFoundException &e) {
 658                 return false;
 659         }
 660 }
 661
 662
 663 bool Settings::getS32NoEx(const std::string &name, s32 &val) const
 664 {
 665         try {
 666                 val = getS32(name);
 667                 return true;
 668         } catch (SettingNotFoundException &e) {
 669                 return false;
 670         }
 671 }
 672
 673
 674 bool Settings::getU64NoEx(const std::string &name, u64 &val) const
 675 {
 676         try {
 677                 val = getU64(name);
 678                 return true;
 679         } catch (SettingNotFoundException &e) {
 680                 return false;
 681         }
 682 }
 683
 684
 685 bool Settings::getV2FNoEx(const std::string &name, v2f &val) const
 686 {
 687         try {
 688                 val = getV2F(name);
 689                 return true;
 690         } catch (SettingNotFoundException &e) {
 691                 return false;
 692         }
 693 }
 694
 695
 696 bool Settings::getV3FNoEx(const std::string &name, v3f &val) const
 697 {
 698         try {
 699                 val = getV3F(name);
 700                 return true;
 701         } catch (SettingNotFoundException &e) {
 702                 return false;
 703         }
 704 }
 705
 706
 707 // N.B. getFlagStrNoEx() does not set val, but merely modifies it.  Thus,
 708 // val must be initialized before using getFlagStrNoEx().  The intention of
 709 // this is to simplify modifying a flags field from a default value.
 710 bool Settings::getFlagStrNoEx(const std::string &name, u32 &val,
 711         FlagDesc *flagdesc) const
 712 {
 713         try {
 714                 u32 flags, flagmask;
 715
 716                 flags = getFlagStr(name, flagdesc, &flagmask);
 717
 718                 val &= ~flagmask;
 719                 val |=  flags;
 720
 721                 return true;
 722         } catch (SettingNotFoundException &e) {
 723                 return false;
 724         }
 725 }
 726
 727
 728 /***********
 729  * Setters *
 730  ***********/
 731
 732 bool Settings::setEntry(const std::string &name, const void *data,
 733         bool set_group, bool set_default)
 734 {
 735         Settings *old_group = NULL;
 736
 737         if (!checkNameValid(name))
 738                 return false;
 739         if (!set_group && !checkValueValid(*(const std::string *)data))
 740                 return false;
 741
 742         {
 743                 MutexAutoLock lock(m_mutex);
 744
 745                 SettingsEntry &entry = set_default ? m_defaults[name] : m_settings[name];
 746                 old_group = entry.group;
 747
 748                 entry.value    = set_group ? "" : *(const std::string *)data;
 749                 entry.group    = set_group ? *(Settings **)data : NULL;
 750                 entry.is_group = set_group;
 751         }
 752
 753         delete old_group;
 754
 755         return true;
 756 }
 757
 758
 759 bool Settings::set(const std::string &name, const std::string &value)
 760 {
 761         if (!setEntry(name, &value, false, false))
 762                 return false;
 763
 764         doCallbacks(name);
 765         return true;
 766 }
 767
 768
 769 bool Settings::setDefault(const std::string &name, const std::string &value)
 770 {
 771         return setEntry(name, &value, false, true);
 772 }
 773
 774
 775 bool Settings::setGroup(const std::string &name, Settings *group)
 776 {
 777         return setEntry(name, &group, true, false);
 778 }
 779
 780
 781 bool Settings::setGroupDefault(const std::string &name, Settings *group)
 782 {
 783         return setEntry(name, &group, true, true);
 784 }
 785
 786
 787 bool Settings::setBool(const std::string &name, bool value)
 788 {
 789         return set(name, value ? "true" : "false");
 790 }
 791
 792
 793 bool Settings::setS16(const std::string &name, s16 value)
 794 {
 795         return set(name, itos(value));
 796 }
 797
 798
 799 bool Settings::setU16(const std::string &name, u16 value)
 800 {
 801         return set(name, itos(value));
 802 }
 803
 804
 805 bool Settings::setS32(const std::string &name, s32 value)
 806 {
 807         return set(name, itos(value));
 808 }
 809
 810
 811 bool Settings::setU64(const std::string &name, u64 value)
 812 {
 813         std::ostringstream os;
 814         os << value;
 815         return set(name, os.str());
 816 }
 817
 818
 819 bool Settings::setFloat(const std::string &name, float value)
 820 {
 821         return set(name, ftos(value));
 822 }
 823
 824
 825 bool Settings::setV2F(const std::string &name, v2f value)
 826 {
 827         std::ostringstream os;
 828         os << "(" << value.X << "," << value.Y << ")";
 829         return set(name, os.str());
 830 }
 831
 832
 833 bool Settings::setV3F(const std::string &name, v3f value)
 834 {
 835         std::ostringstream os;
 836         os << "(" << value.X << "," << value.Y << "," << value.Z << ")";
 837         return set(name, os.str());
 838 }
 839
 840
 841 bool Settings::setFlagStr(const std::string &name, u32 flags,
 842         const FlagDesc *flagdesc, u32 flagmask)
 843 {
 844         return set(name, writeFlagString(flags, flagdesc, flagmask));
 845 }
 846
 847
 848 bool Settings::setStruct(const std::string &name, const std::string &format,
 849         void *value)
 850 {
 851         std::string structstr;
 852         if (!serializeStructToString(&structstr, format, value))
 853                 return false;
 854
 855         return set(name, structstr);
 856 }
 857
 858
 859 bool Settings::setNoiseParams(const std::string &name,
 860         const NoiseParams &np, bool set_default)
 861 {
 862         Settings *group = new Settings;
 863
 864         group->setFloat("offset",      np.offset);
 865         group->setFloat("scale",       np.scale);
 866         group->setV3F("spread",        np.spread);
 867         group->setS32("seed",          np.seed);
 868         group->setU16("octaves",       np.octaves);
 869         group->setFloat("persistence", np.persist);
 870         group->setFloat("lacunarity",  np.lacunarity);
 871         group->setFlagStr("flags",     np.flags, flagdesc_noiseparams, np.flags);
 872
 873         return setEntry(name, &group, true, set_default);
 874 }
 875
 876
 877 bool Settings::remove(const std::string &name)
 878 {
 879         MutexAutoLock lock(m_mutex);
 880
 881         SettingEntries::iterator it = m_settings.find(name);
 882         if (it != m_settings.end()) {
 883                 delete it->second.group;
 884                 m_settings.erase(it);
 885                 return true;
 886         } else {
 887                 return false;
 888         }
 889 }
 890
 891
 892 void Settings::clear()
 893 {
 894         MutexAutoLock lock(m_mutex);
 895         clearNoLock();
 896 }
 897
 898 void Settings::clearDefaults()
 899 {
 900         MutexAutoLock lock(m_mutex);
 901         clearDefaultsNoLock();
 902 }
 903
 904 void Settings::updateValue(const Settings &other, const std::string &name)
 905 {
 906         if (&other == this)
 907                 return;
 908
 909         MutexAutoLock lock(m_mutex);
 910
 911         try {
 912                 std::string val = other.get(name);
 913                 m_settings[name] = val;
 914         } catch (SettingNotFoundException &e) {
 915         }
 916 }
 917
 918
 919 void Settings::update(const Settings &other)
 920 {
 921         if (&other == this)
 922                 return;
 923
 924         MutexAutoLock lock(m_mutex);
 925         MutexAutoLock lock2(other.m_mutex);
 926
 927         updateNoLock(other);
 928 }
 929
 930
 931 SettingsParseEvent Settings::parseConfigObject(const std::string &line,
 932         const std::string &end, std::string &name, std::string &value)
 933 {
 934         std::string trimmed_line = trim(line);
 935
 936         if (trimmed_line.empty())
 937                 return SPE_NONE;
 938         if (trimmed_line[0] == '#')
 939                 return SPE_COMMENT;
 940         if (trimmed_line == end)
 941                 return SPE_END;
 942
 943         size_t pos = trimmed_line.find('=');
 944         if (pos == std::string::npos)
 945                 return SPE_INVALID;
 946
 947         name  = trim(trimmed_line.substr(0, pos));
 948         value = trim(trimmed_line.substr(pos + 1));
 949
 950         if (value == "{")
 951                 return SPE_GROUP;
 952         if (value == "\"\"\"")
 953                 return SPE_MULTILINE;
 954
 955         return SPE_KVPAIR;
 956 }
 957
 958
 959 void Settings::updateNoLock(const Settings &other)
 960 {
 961         m_settings.insert(other.m_settings.begin(), other.m_settings.end());
 962         m_defaults.insert(other.m_defaults.begin(), other.m_defaults.end());
 963 }
 964
 965
 966 void Settings::clearNoLock()
 967 {
 968
 969         for (SettingEntries::const_iterator it = m_settings.begin();
 970                         it != m_settings.end(); ++it)
 971                 delete it->second.group;
 972         m_settings.clear();
 973
 974         clearDefaultsNoLock();
 975 }
 976
 977 void Settings::clearDefaultsNoLock()
 978 {
 979         for (SettingEntries::const_iterator it = m_defaults.begin();
 980                         it != m_defaults.end(); ++it)
 981                 delete it->second.group;
 982         m_defaults.clear();
 983 }
 984
 985
 986 void Settings::registerChangedCallback(const std::string &name,
 987         SettingsChangedCallback cbf, void *userdata)
 988 {
 989         MutexAutoLock lock(m_callback_mutex);
 990         m_callbacks[name].push_back(std::make_pair(cbf, userdata));
 991 }
 992
 993 void Settings::deregisterChangedCallback(const std::string &name,
 994         SettingsChangedCallback cbf, void *userdata)
 995 {
 996         MutexAutoLock lock(m_callback_mutex);
 997         SettingsCallbackMap::iterator it_cbks = m_callbacks.find(name);
 998
 999         if (it_cbks != m_callbacks.end()) {
1000                 SettingsCallbackList &cbks = it_cbks->second;
1001
1002                 SettingsCallbackList::iterator position =
1003                         std::find(cbks.begin(), cbks.end(), std::make_pair(cbf, userdata));
1004
1005                 if (position != cbks.end())
1006                         cbks.erase(position);
1007         }
1008 }
1009
1010 void Settings::doCallbacks(const std::string &name) const
1011 {
1012         MutexAutoLock lock(m_callback_mutex);
1013
1014         SettingsCallbackMap::const_iterator it_cbks = m_callbacks.find(name);
1015         if (it_cbks != m_callbacks.end()) {
1016                 SettingsCallbackList::const_iterator it;
1017                 for (it = it_cbks->second.begin(); it != it_cbks->second.end(); ++it)
1018                         (it->first)(name, it->second);
1019         }
1020 }