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         bool was_modified = updateConfigObject(is, os, "");
 355         is.close();
 356
 357         if (!was_modified)
 358                 return true;
 359
 360         if (!fs::safeWriteToFile(filename, os.str())) {
 361                 errorstream << "Error writing configuration file: \""
 362                         << filename << "\"" << std::endl;
 363                 return false;
 364         }
 365
 366         return true;
 367 }
 368
 369
 370 bool Settings::parseCommandLine(int argc, char *argv[],
 371                 std::map<std::string, ValueSpec> &allowed_options)
 372 {
 373         int nonopt_index = 0;
 374         for (int i = 1; i < argc; i++) {
 375                 std::string arg_name = argv[i];
 376                 if (arg_name.substr(0, 2) != "--") {
 377                         // If option doesn't start with -, read it in as nonoptX
 378                         if (arg_name[0] != '-'){
 379                                 std::string name = "nonopt";
 380                                 name += itos(nonopt_index);
 381                                 set(name, arg_name);
 382                                 nonopt_index++;
 383                                 continue;
 384                         }
 385                         errorstream << "Invalid command-line parameter \""
 386                                         << arg_name << "\": --<option> expected." << std::endl;
 387                         return false;
 388                 }
 389
 390                 std::string name = arg_name.substr(2);
 391
 392                 std::map<std::string, ValueSpec>::iterator n;
 393                 n = allowed_options.find(name);
 394                 if (n == allowed_options.end()) {
 395                         errorstream << "Unknown command-line parameter \""
 396                                         << arg_name << "\"" << std::endl;
 397                         return false;
 398                 }
 399
 400                 ValueType type = n->second.type;
 401
 402                 std::string value = "";
 403
 404                 if (type == VALUETYPE_FLAG) {
 405                         value = "true";
 406                 } else {
 407                         if ((i + 1) >= argc) {
 408                                 errorstream << "Invalid command-line parameter \""
 409                                                 << name << "\": missing value" << std::endl;
 410                                 return false;
 411                         }
 412                         value = argv[++i];
 413                 }
 414
 415                 set(name, value);
 416         }
 417
 418         return true;
 419 }
 420
 421
 422
 423 /***********
 424  * Getters *
 425  ***********/
 426
 427
 428 const SettingsEntry &Settings::getEntry(const std::string &name) const
 429 {
 430         JMutexAutoLock lock(m_mutex);
 431
 432         std::map<std::string, SettingsEntry>::const_iterator n;
 433         if ((n = m_settings.find(name)) == m_settings.end()) {
 434                 if ((n = m_defaults.find(name)) == m_defaults.end())
 435                         throw SettingNotFoundException("Setting [" + name + "] not found.");
 436         }
 437         return n->second;
 438 }
 439
 440
 441 Settings *Settings::getGroup(const std::string &name) const
 442 {
 443         Settings *group = getEntry(name).group;
 444         if (group == NULL)
 445                 throw SettingNotFoundException("Setting [" + name + "] is not a group.");
 446         return group;
 447 }
 448
 449
 450 std::string Settings::get(const std::string &name) const
 451 {
 452         return getEntry(name).value;
 453 }
 454
 455
 456 bool Settings::getBool(const std::string &name) const
 457 {
 458         return is_yes(get(name));
 459 }
 460
 461
 462 u16 Settings::getU16(const std::string &name) const
 463 {
 464         return stoi(get(name), 0, 65535);
 465 }
 466
 467
 468 s16 Settings::getS16(const std::string &name) const
 469 {
 470         return stoi(get(name), -32768, 32767);
 471 }
 472
 473
 474 s32 Settings::getS32(const std::string &name) const
 475 {
 476         return stoi(get(name));
 477 }
 478
 479
 480 float Settings::getFloat(const std::string &name) const
 481 {
 482         return stof(get(name));
 483 }
 484
 485
 486 u64 Settings::getU64(const std::string &name) const
 487 {
 488         u64 value = 0;
 489         std::string s = get(name);
 490         std::istringstream ss(s);
 491         ss >> value;
 492         return value;
 493 }
 494
 495
 496 v2f Settings::getV2F(const std::string &name) const
 497 {
 498         v2f value;
 499         Strfnd f(get(name));
 500         f.next("(");
 501         value.X = stof(f.next(","));
 502         value.Y = stof(f.next(")"));
 503         return value;
 504 }
 505
 506
 507 v3f Settings::getV3F(const std::string &name) const
 508 {
 509         v3f value;
 510         Strfnd f(get(name));
 511         f.next("(");
 512         value.X = stof(f.next(","));
 513         value.Y = stof(f.next(","));
 514         value.Z = stof(f.next(")"));
 515         return value;
 516 }
 517
 518
 519 u32 Settings::getFlagStr(const std::string &name, const FlagDesc *flagdesc,
 520         u32 *flagmask) const
 521 {
 522         std::string val = get(name);
 523         return std::isdigit(val[0])
 524                 ? stoi(val)
 525                 : readFlagString(val, flagdesc, flagmask);
 526 }
 527
 528
 529 // N.B. if getStruct() is used to read a non-POD aggregate type,
 530 // the behavior is undefined.
 531 bool Settings::getStruct(const std::string &name, const std::string &format,
 532         void *out, size_t olen) const
 533 {
 534         std::string valstr;
 535
 536         try {
 537                 valstr = get(name);
 538         } catch (SettingNotFoundException &e) {
 539                 return false;
 540         }
 541
 542         if (!deSerializeStringToStruct(valstr, format, out, olen))
 543                 return false;
 544
 545         return true;
 546 }
 547
 548
 549 bool Settings::getNoiseParams(const std::string &name, NoiseParams &np) const
 550 {
 551         return getNoiseParamsFromGroup(name, np) || getNoiseParamsFromValue(name, np);
 552 }
 553
 554
 555 bool Settings::getNoiseParamsFromValue(const std::string &name,
 556         NoiseParams &np) const
 557 {
 558         std::string value;
 559
 560         if (!getNoEx(name, value))
 561                 return false;
 562
 563         Strfnd f(value);
 564
 565         np.offset   = stof(f.next(","));
 566         np.scale    = stof(f.next(","));
 567         f.next("(");
 568         np.spread.X = stof(f.next(","));
 569         np.spread.Y = stof(f.next(","));
 570         np.spread.Z = stof(f.next(")"));
 571         f.next(",");
 572         np.seed     = stoi(f.next(","));
 573         np.octaves  = stoi(f.next(","));
 574         np.persist  = stof(f.next(""));
 575
 576         return true;
 577 }
 578
 579
 580 bool Settings::getNoiseParamsFromGroup(const std::string &name,
 581         NoiseParams &np) const
 582 {
 583         Settings *group = NULL;
 584
 585         if (!getGroupNoEx(name, group))
 586                 return false;
 587
 588         group->getFloatNoEx("offset",      np.offset);
 589         group->getFloatNoEx("scale",       np.scale);
 590         group->getV3FNoEx("spread",        np.spread);
 591         group->getS32NoEx("seed",          np.seed);
 592         group->getU16NoEx("octaves",       np.octaves);
 593         group->getFloatNoEx("persistence", np.persist);
 594
 595         return true;
 596 }
 597
 598
 599 bool Settings::exists(const std::string &name) const
 600 {
 601         JMutexAutoLock lock(m_mutex);
 602
 603         return (m_settings.find(name) != m_settings.end() ||
 604                 m_defaults.find(name) != m_defaults.end());
 605 }
 606
 607
 608 std::vector<std::string> Settings::getNames() const
 609 {
 610         std::vector<std::string> names;
 611         for (std::map<std::string, SettingsEntry>::const_iterator
 612                         i = m_settings.begin();
 613                         i != m_settings.end(); ++i) {
 614                 names.push_back(i->first);
 615         }
 616         return names;
 617 }
 618
 619
 620
 621 /***************************************
 622  * Getters that don't throw exceptions *
 623  ***************************************/
 624
 625 bool Settings::getEntryNoEx(const std::string &name, SettingsEntry &val) const
 626 {
 627         try {
 628                 val = getEntry(name);
 629                 return true;
 630         } catch (SettingNotFoundException &e) {
 631                 return false;
 632         }
 633 }
 634
 635
 636 bool Settings::getGroupNoEx(const std::string &name, Settings *&val) const
 637 {
 638         try {
 639                 val = getGroup(name);
 640                 return true;
 641         } catch (SettingNotFoundException &e) {
 642                 return false;
 643         }
 644 }
 645
 646
 647 bool Settings::getNoEx(const std::string &name, std::string &val) const
 648 {
 649         try {
 650                 val = get(name);
 651                 return true;
 652         } catch (SettingNotFoundException &e) {
 653                 return false;
 654         }
 655 }
 656
 657
 658 bool Settings::getFlag(const std::string &name) const
 659 {
 660         try {
 661                 return getBool(name);
 662         } catch(SettingNotFoundException &e) {
 663                 return false;
 664         }
 665 }
 666
 667
 668 bool Settings::getFloatNoEx(const std::string &name, float &val) const
 669 {
 670         try {
 671                 val = getFloat(name);
 672                 return true;
 673         } catch (SettingNotFoundException &e) {
 674                 return false;
 675         }
 676 }
 677
 678
 679 bool Settings::getU16NoEx(const std::string &name, u16 &val) const
 680 {
 681         try {
 682                 val = getU16(name);
 683                 return true;
 684         } catch (SettingNotFoundException &e) {
 685                 return false;
 686         }
 687 }
 688
 689
 690 bool Settings::getS16NoEx(const std::string &name, s16 &val) const
 691 {
 692         try {
 693                 val = getS16(name);
 694                 return true;
 695         } catch (SettingNotFoundException &e) {
 696                 return false;
 697         }
 698 }
 699
 700
 701 bool Settings::getS32NoEx(const std::string &name, s32 &val) const
 702 {
 703         try {
 704                 val = getS32(name);
 705                 return true;
 706         } catch (SettingNotFoundException &e) {
 707                 return false;
 708         }
 709 }
 710
 711
 712 bool Settings::getU64NoEx(const std::string &name, u64 &val) const
 713 {
 714         try {
 715                 val = getU64(name);
 716                 return true;
 717         } catch (SettingNotFoundException &e) {
 718                 return false;
 719         }
 720 }
 721
 722
 723 bool Settings::getV2FNoEx(const std::string &name, v2f &val) const
 724 {
 725         try {
 726                 val = getV2F(name);
 727                 return true;
 728         } catch (SettingNotFoundException &e) {
 729                 return false;
 730         }
 731 }
 732
 733
 734 bool Settings::getV3FNoEx(const std::string &name, v3f &val) const
 735 {
 736         try {
 737                 val = getV3F(name);
 738                 return true;
 739         } catch (SettingNotFoundException &e) {
 740                 return false;
 741         }
 742 }
 743
 744
 745 // N.B. getFlagStrNoEx() does not set val, but merely modifies it.  Thus,
 746 // val must be initialized before using getFlagStrNoEx().  The intention of
 747 // this is to simplify modifying a flags field from a default value.
 748 bool Settings::getFlagStrNoEx(const std::string &name, u32 &val,
 749         FlagDesc *flagdesc) const
 750 {
 751         try {
 752                 u32 flags, flagmask;
 753
 754                 flags = getFlagStr(name, flagdesc, &flagmask);
 755
 756                 val &= ~flagmask;
 757                 val |=  flags;
 758
 759                 return true;
 760         } catch (SettingNotFoundException &e) {
 761                 return false;
 762         }
 763 }
 764
 765
 766 /***********
 767  * Setters *
 768  ***********/
 769
 770
 771 void Settings::set(const std::string &name, const std::string &value)
 772 {
 773         {
 774                 JMutexAutoLock lock(m_mutex);
 775
 776                 m_settings[name].value = value;
 777         }
 778         doCallbacks(name);
 779 }
 780
 781
 782 void Settings::setGroup(const std::string &name, Settings *group)
 783 {
 784         Settings *old_group = NULL;
 785         {
 786                 JMutexAutoLock lock(m_mutex);
 787
 788                 old_group = m_settings[name].group;
 789                 m_settings[name].group = group;
 790         }
 791         delete old_group;
 792 }
 793
 794
 795 void Settings::setDefault(const std::string &name, const std::string &value)
 796 {
 797         JMutexAutoLock lock(m_mutex);
 798
 799         m_defaults[name].value = value;
 800 }
 801
 802
 803 void Settings::setGroupDefault(const std::string &name, Settings *group)
 804 {
 805         Settings *old_group = NULL;
 806         {
 807                 JMutexAutoLock lock(m_mutex);
 808
 809                 old_group = m_defaults[name].group;
 810                 m_defaults[name].group = group;
 811         }
 812         delete old_group;
 813 }
 814
 815
 816 void Settings::setBool(const std::string &name, bool value)
 817 {
 818         set(name, value ? "true" : "false");
 819 }
 820
 821
 822 void Settings::setS16(const std::string &name, s16 value)
 823 {
 824         set(name, itos(value));
 825 }
 826
 827
 828 void Settings::setU16(const std::string &name, u16 value)
 829 {
 830         set(name, itos(value));
 831 }
 832
 833
 834 void Settings::setS32(const std::string &name, s32 value)
 835 {
 836         set(name, itos(value));
 837 }
 838
 839
 840 void Settings::setU64(const std::string &name, u64 value)
 841 {
 842         std::ostringstream os;
 843         os << value;
 844         set(name, os.str());
 845 }
 846
 847
 848 void Settings::setFloat(const std::string &name, float value)
 849 {
 850         set(name, ftos(value));
 851 }
 852
 853
 854 void Settings::setV2F(const std::string &name, v2f value)
 855 {
 856         std::ostringstream os;
 857         os << "(" << value.X << "," << value.Y << ")";
 858         set(name, os.str());
 859 }
 860
 861
 862 void Settings::setV3F(const std::string &name, v3f value)
 863 {
 864         std::ostringstream os;
 865         os << "(" << value.X << "," << value.Y << "," << value.Z << ")";
 866         set(name, os.str());
 867 }
 868
 869
 870 void Settings::setFlagStr(const std::string &name, u32 flags,
 871         const FlagDesc *flagdesc, u32 flagmask)
 872 {
 873         set(name, writeFlagString(flags, flagdesc, flagmask));
 874 }
 875
 876
 877 bool Settings::setStruct(const std::string &name, const std::string &format,
 878         void *value)
 879 {
 880         std::string structstr;
 881         if (!serializeStructToString(&structstr, format, value))
 882                 return false;
 883
 884         set(name, structstr);
 885         return true;
 886 }
 887
 888
 889 void Settings::setNoiseParams(const std::string &name, const NoiseParams &np)
 890 {
 891         Settings *group = new Settings;
 892
 893         group->setFloat("offset",      np.offset);
 894         group->setFloat("scale",       np.scale);
 895         group->setV3F("spread",        np.spread);
 896         group->setS32("seed",          np.seed);
 897         group->setU16("octaves",       np.octaves);
 898         group->setFloat("persistence", np.persist);
 899
 900         Settings *old_group;
 901         {
 902                 JMutexAutoLock lock(m_mutex);
 903
 904                 old_group = m_settings[name].group;
 905                 m_settings[name].group = group;
 906                 m_settings[name].value = "";
 907         }
 908         delete old_group;
 909 }
 910
 911
 912 bool Settings::remove(const std::string &name)
 913 {
 914         JMutexAutoLock lock(m_mutex);
 915         return m_settings.erase(name);
 916 }
 917
 918
 919 void Settings::clear()
 920 {
 921         JMutexAutoLock lock(m_mutex);
 922         clearNoLock();
 923 }
 924
 925
 926 void Settings::updateValue(const Settings &other, const std::string &name)
 927 {
 928         if (&other == this)
 929                 return;
 930
 931         JMutexAutoLock lock(m_mutex);
 932
 933         try {
 934                 std::string val = other.get(name);
 935
 936                 m_settings[name] = val;
 937         } catch (SettingNotFoundException &e) {
 938         }
 939 }
 940
 941
 942 void Settings::update(const Settings &other)
 943 {
 944         if (&other == this)
 945                 return;
 946
 947         JMutexAutoLock lock(m_mutex);
 948         JMutexAutoLock lock2(other.m_mutex);
 949
 950         updateNoLock(other);
 951 }
 952
 953
 954 SettingsParseEvent Settings::parseConfigObject(const std::string &line,
 955         const std::string &end, std::string &name, std::string &value)
 956 {
 957         std::string trimmed_line = trim(line);
 958
 959         if (trimmed_line.empty())
 960                 return SPE_NONE;
 961         if (trimmed_line[0] == '#')
 962                 return SPE_COMMENT;
 963         if (trimmed_line == end)
 964                 return SPE_END;
 965
 966         size_t pos = trimmed_line.find('=');
 967         if (pos == std::string::npos)
 968                 return SPE_INVALID;
 969
 970         name  = trim(trimmed_line.substr(0, pos));
 971         value = trim(trimmed_line.substr(pos + 1));
 972
 973         if (value == "{")
 974                 return SPE_GROUP;
 975         if (value == "\"\"\"")
 976                 return SPE_MULTILINE;
 977
 978         return SPE_KVPAIR;
 979 }
 980
 981
 982 void Settings::updateNoLock(const Settings &other)
 983 {
 984         m_settings.insert(other.m_settings.begin(), other.m_settings.end());
 985         m_defaults.insert(other.m_defaults.begin(), other.m_defaults.end());
 986 }
 987
 988
 989 void Settings::clearNoLock()
 990 {
 991         m_settings.clear();
 992         m_defaults.clear();
 993 }
 994
 995
 996 void Settings::registerChangedCallback(std::string name,
 997         setting_changed_callback cbf)
 998 {
 999         m_callbacks[name].push_back(cbf);
1000 }
1001
1002
1003 void Settings::doCallbacks(const std::string name)
1004 {
1005         std::vector<setting_changed_callback> tempvector;
1006         {
1007                 JMutexAutoLock lock(m_mutex);
1008                 if (m_callbacks.find(name) != m_callbacks.end())
1009                 {
1010                         tempvector = m_callbacks[name];
1011                 }
1012         }
1013
1014         for (std::vector<setting_changed_callback>::iterator iter = tempvector.begin();
1015                         iter != tempvector.end(); iter ++)
1016         {
1017                 (*iter)(name);
1018         }
1019 }