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