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- /*
- Minetest
- Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #include "settings.h"
- #include "irrlichttypes_bloated.h"
- #include "exceptions.h"
- #include "threading/mutex_auto_lock.h"
- #include "util/strfnd.h"
- #include <iostream>
- #include <fstream>
- #include <sstream>
- #include "debug.h"
- #include "log.h"
- #include "util/serialize.h"
- #include "filesys.h"
- #include "noise.h"
- #include <cctype>
- #include <algorithm>
- static Settings main_settings;
- Settings *g_settings = &main_settings;
- std::string g_settings_path;
- Settings::~Settings()
- {
- clear();
- }
- Settings & Settings::operator += (const Settings &other)
- {
- update(other);
- return *this;
- }
- Settings & Settings::operator = (const Settings &other)
- {
- if (&other == this)
- return *this;
- MutexAutoLock lock(m_mutex);
- MutexAutoLock lock2(other.m_mutex);
- clearNoLock();
- updateNoLock(other);
- return *this;
- }
- bool Settings::checkNameValid(const std::string &name)
- {
- bool valid = name.find_first_of("=\"{}#") == std::string::npos;
- if (valid) valid = trim(name) == name;
- if (!valid) {
- errorstream << "Invalid setting name \"" << name << "\""
- << std::endl;
- return false;
- }
- return true;
- }
- bool Settings::checkValueValid(const std::string &value)
- {
- if (value.substr(0, 3) == "\"\"\"" ||
- value.find("\n\"\"\"") != std::string::npos) {
- errorstream << "Invalid character sequence '\"\"\"' found in"
- " setting value!" << std::endl;
- return false;
- }
- return true;
- }
- std::string Settings::getMultiline(std::istream &is, size_t *num_lines)
- {
- size_t lines = 1;
- std::string value;
- std::string line;
- while (is.good()) {
- lines++;
- std::getline(is, line);
- if (line == "\"\"\"")
- break;
- value += line;
- value.push_back('\n');
- }
- size_t len = value.size();
- if (len)
- value.erase(len - 1);
- if (num_lines)
- *num_lines = lines;
- return value;
- }
- bool Settings::readConfigFile(const char *filename)
- {
- std::ifstream is(filename);
- if (!is.good())
- return false;
- return parseConfigLines(is, "");
- }
- bool Settings::parseConfigLines(std::istream &is, const std::string &end)
- {
- MutexAutoLock lock(m_mutex);
- std::string line, name, value;
- while (is.good()) {
- std::getline(is, line);
- SettingsParseEvent event = parseConfigObject(line, end, name, value);
- switch (event) {
- case SPE_NONE:
- case SPE_INVALID:
- case SPE_COMMENT:
- break;
- case SPE_KVPAIR:
- m_settings[name] = SettingsEntry(value);
- break;
- case SPE_END:
- return true;
- case SPE_GROUP: {
- Settings *group = new Settings;
- if (!group->parseConfigLines(is, "}")) {
- delete group;
- return false;
- }
- m_settings[name] = SettingsEntry(group);
- break;
- }
- case SPE_MULTILINE:
- m_settings[name] = SettingsEntry(getMultiline(is));
- break;
- }
- }
- return end.empty();
- }
- void Settings::writeLines(std::ostream &os, u32 tab_depth) const
- {
- MutexAutoLock lock(m_mutex);
- for (const auto &setting_it : m_settings)
- printEntry(os, setting_it.first, setting_it.second, tab_depth);
- }
- void Settings::printEntry(std::ostream &os, const std::string &name,
- const SettingsEntry &entry, u32 tab_depth)
- {
- for (u32 i = 0; i != tab_depth; i++)
- os << "\t";
- if (entry.is_group) {
- os << name << " = {\n";
- entry.group->writeLines(os, tab_depth + 1);
- for (u32 i = 0; i != tab_depth; i++)
- os << "\t";
- os << "}\n";
- } else {
- os << name << " = ";
- if (entry.value.find('\n') != std::string::npos)
- os << "\"\"\"\n" << entry.value << "\n\"\"\"\n";
- else
- os << entry.value << "\n";
- }
- }
- bool Settings::updateConfigObject(std::istream &is, std::ostream &os,
- const std::string &end, u32 tab_depth)
- {
- SettingEntries::const_iterator it;
- std::set<std::string> present_entries;
- std::string line, name, value;
- bool was_modified = false;
- bool end_found = false;
- // Add any settings that exist in the config file with the current value
- // in the object if existing
- while (is.good() && !end_found) {
- std::getline(is, line);
- SettingsParseEvent event = parseConfigObject(line, end, name, value);
- switch (event) {
- case SPE_END:
- os << line << (is.eof() ? "" : "\n");
- end_found = true;
- break;
- case SPE_MULTILINE:
- value = getMultiline(is);
- /* FALLTHROUGH */
- case SPE_KVPAIR:
- it = m_settings.find(name);
- if (it != m_settings.end() &&
- (it->second.is_group || it->second.value != value)) {
- printEntry(os, name, it->second, tab_depth);
- was_modified = true;
- } else {
- os << line << "\n";
- if (event == SPE_MULTILINE)
- os << value << "\n\"\"\"\n";
- }
- present_entries.insert(name);
- break;
- case SPE_GROUP:
- it = m_settings.find(name);
- if (it != m_settings.end() && it->second.is_group) {
- os << line << "\n";
- sanity_check(it->second.group != NULL);
- was_modified |= it->second.group->updateConfigObject(is, os,
- "}", tab_depth + 1);
- } else {
- printEntry(os, name, it->second, tab_depth);
- was_modified = true;
- }
- present_entries.insert(name);
- break;
- default:
- os << line << (is.eof() ? "" : "\n");
- break;
- }
- }
- // Add any settings in the object that don't exist in the config file yet
- for (it = m_settings.begin(); it != m_settings.end(); ++it) {
- if (present_entries.find(it->first) != present_entries.end())
- continue;
- printEntry(os, it->first, it->second, tab_depth);
- was_modified = true;
- }
- return was_modified;
- }
- bool Settings::updateConfigFile(const char *filename)
- {
- MutexAutoLock lock(m_mutex);
- std::ifstream is(filename);
- std::ostringstream os(std::ios_base::binary);
- bool was_modified = updateConfigObject(is, os, "");
- is.close();
- if (!was_modified)
- return true;
- if (!fs::safeWriteToFile(filename, os.str())) {
- errorstream << "Error writing configuration file: \""
- << filename << "\"" << std::endl;
- return false;
- }
- return true;
- }
- bool Settings::parseCommandLine(int argc, char *argv[],
- std::map<std::string, ValueSpec> &allowed_options)
- {
- int nonopt_index = 0;
- for (int i = 1; i < argc; i++) {
- std::string arg_name = argv[i];
- if (arg_name.substr(0, 2) != "--") {
- // If option doesn't start with -, read it in as nonoptX
- if (arg_name[0] != '-'){
- std::string name = "nonopt";
- name += itos(nonopt_index);
- set(name, arg_name);
- nonopt_index++;
- continue;
- }
- errorstream << "Invalid command-line parameter \""
- << arg_name << "\": --<option> expected." << std::endl;
- return false;
- }
- std::string name = arg_name.substr(2);
- std::map<std::string, ValueSpec>::iterator n;
- n = allowed_options.find(name);
- if (n == allowed_options.end()) {
- errorstream << "Unknown command-line parameter \""
- << arg_name << "\"" << std::endl;
- return false;
- }
- ValueType type = n->second.type;
- std::string value;
- if (type == VALUETYPE_FLAG) {
- value = "true";
- } else {
- if ((i + 1) >= argc) {
- errorstream << "Invalid command-line parameter \""
- << name << "\": missing value" << std::endl;
- return false;
- }
- value = argv[++i];
- }
- set(name, value);
- }
- return true;
- }
- /***********
- * Getters *
- ***********/
- const SettingsEntry &Settings::getEntry(const std::string &name) const
- {
- MutexAutoLock lock(m_mutex);
- SettingEntries::const_iterator n;
- if ((n = m_settings.find(name)) == m_settings.end()) {
- if ((n = m_defaults.find(name)) == m_defaults.end())
- throw SettingNotFoundException("Setting [" + name + "] not found.");
- }
- return n->second;
- }
- const SettingsEntry &Settings::getEntryDefault(const std::string &name) const
- {
- MutexAutoLock lock(m_mutex);
- SettingEntries::const_iterator n;
- if ((n = m_defaults.find(name)) == m_defaults.end()) {
- throw SettingNotFoundException("Setting [" + name + "] not found.");
- }
- return n->second;
- }
- Settings *Settings::getGroup(const std::string &name) const
- {
- const SettingsEntry &entry = getEntry(name);
- if (!entry.is_group)
- throw SettingNotFoundException("Setting [" + name + "] is not a group.");
- return entry.group;
- }
- const std::string &Settings::get(const std::string &name) const
- {
- const SettingsEntry &entry = getEntry(name);
- if (entry.is_group)
- throw SettingNotFoundException("Setting [" + name + "] is a group.");
- return entry.value;
- }
- const std::string &Settings::getDefault(const std::string &name) const
- {
- const SettingsEntry &entry = getEntryDefault(name);
- if (entry.is_group)
- throw SettingNotFoundException("Setting [" + name + "] is a group.");
- return entry.value;
- }
- bool Settings::getBool(const std::string &name) const
- {
- return is_yes(get(name));
- }
- u16 Settings::getU16(const std::string &name) const
- {
- return stoi(get(name), 0, 65535);
- }
- s16 Settings::getS16(const std::string &name) const
- {
- return stoi(get(name), -32768, 32767);
- }
- u32 Settings::getU32(const std::string &name) const
- {
- return (u32) stoi(get(name));
- }
- s32 Settings::getS32(const std::string &name) const
- {
- return stoi(get(name));
- }
- float Settings::getFloat(const std::string &name) const
- {
- return stof(get(name));
- }
- u64 Settings::getU64(const std::string &name) const
- {
- u64 value = 0;
- std::string s = get(name);
- std::istringstream ss(s);
- ss >> value;
- return value;
- }
- v2f Settings::getV2F(const std::string &name) const
- {
- v2f value;
- Strfnd f(get(name));
- f.next("(");
- value.X = stof(f.next(","));
- value.Y = stof(f.next(")"));
- return value;
- }
- v3f Settings::getV3F(const std::string &name) const
- {
- v3f value;
- Strfnd f(get(name));
- f.next("(");
- value.X = stof(f.next(","));
- value.Y = stof(f.next(","));
- value.Z = stof(f.next(")"));
- return value;
- }
- u32 Settings::getFlagStr(const std::string &name, const FlagDesc *flagdesc,
- u32 *flagmask) const
- {
- std::string val = get(name);
- return std::isdigit(val[0])
- ? stoi(val)
- : readFlagString(val, flagdesc, flagmask);
- }
- // N.B. if getStruct() is used to read a non-POD aggregate type,
- // the behavior is undefined.
- bool Settings::getStruct(const std::string &name, const std::string &format,
- void *out, size_t olen) const
- {
- std::string valstr;
- try {
- valstr = get(name);
- } catch (SettingNotFoundException &e) {
- return false;
- }
- if (!deSerializeStringToStruct(valstr, format, out, olen))
- return false;
- return true;
- }
- bool Settings::getNoiseParams(const std::string &name, NoiseParams &np) const
- {
- return getNoiseParamsFromGroup(name, np) || getNoiseParamsFromValue(name, np);
- }
- bool Settings::getNoiseParamsFromValue(const std::string &name,
- NoiseParams &np) const
- {
- std::string value;
- if (!getNoEx(name, value))
- return false;
- Strfnd f(value);
- np.offset = stof(f.next(","));
- np.scale = stof(f.next(","));
- f.next("(");
- np.spread.X = stof(f.next(","));
- np.spread.Y = stof(f.next(","));
- np.spread.Z = stof(f.next(")"));
- f.next(",");
- np.seed = stoi(f.next(","));
- np.octaves = stoi(f.next(","));
- np.persist = stof(f.next(","));
- std::string optional_params = f.next("");
- if (!optional_params.empty())
- np.lacunarity = stof(optional_params);
- return true;
- }
- bool Settings::getNoiseParamsFromGroup(const std::string &name,
- NoiseParams &np) const
- {
- Settings *group = NULL;
- if (!getGroupNoEx(name, group))
- return false;
- group->getFloatNoEx("offset", np.offset);
- group->getFloatNoEx("scale", np.scale);
- group->getV3FNoEx("spread", np.spread);
- group->getS32NoEx("seed", np.seed);
- group->getU16NoEx("octaves", np.octaves);
- group->getFloatNoEx("persistence", np.persist);
- group->getFloatNoEx("lacunarity", np.lacunarity);
- np.flags = 0;
- if (!group->getFlagStrNoEx("flags", np.flags, flagdesc_noiseparams))
- np.flags = NOISE_FLAG_DEFAULTS;
- return true;
- }
- bool Settings::exists(const std::string &name) const
- {
- MutexAutoLock lock(m_mutex);
- return (m_settings.find(name) != m_settings.end() ||
- m_defaults.find(name) != m_defaults.end());
- }
- std::vector<std::string> Settings::getNames() const
- {
- std::vector<std::string> names;
- for (const auto &settings_it : m_settings) {
- names.push_back(settings_it.first);
- }
- return names;
- }
- /***************************************
- * Getters that don't throw exceptions *
- ***************************************/
- bool Settings::getEntryNoEx(const std::string &name, SettingsEntry &val) const
- {
- try {
- val = getEntry(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getEntryDefaultNoEx(const std::string &name, SettingsEntry &val) const
- {
- try {
- val = getEntryDefault(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getGroupNoEx(const std::string &name, Settings *&val) const
- {
- try {
- val = getGroup(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getNoEx(const std::string &name, std::string &val) const
- {
- try {
- val = get(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getDefaultNoEx(const std::string &name, std::string &val) const
- {
- try {
- val = getDefault(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getFlag(const std::string &name) const
- {
- try {
- return getBool(name);
- } catch(SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getFloatNoEx(const std::string &name, float &val) const
- {
- try {
- val = getFloat(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getU16NoEx(const std::string &name, u16 &val) const
- {
- try {
- val = getU16(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getS16NoEx(const std::string &name, s16 &val) const
- {
- try {
- val = getS16(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getS32NoEx(const std::string &name, s32 &val) const
- {
- try {
- val = getS32(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getU64NoEx(const std::string &name, u64 &val) const
- {
- try {
- val = getU64(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getV2FNoEx(const std::string &name, v2f &val) const
- {
- try {
- val = getV2F(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- bool Settings::getV3FNoEx(const std::string &name, v3f &val) const
- {
- try {
- val = getV3F(name);
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- // N.B. getFlagStrNoEx() does not set val, but merely modifies it. Thus,
- // val must be initialized before using getFlagStrNoEx(). The intention of
- // this is to simplify modifying a flags field from a default value.
- bool Settings::getFlagStrNoEx(const std::string &name, u32 &val,
- FlagDesc *flagdesc) const
- {
- try {
- u32 flags, flagmask;
- flags = getFlagStr(name, flagdesc, &flagmask);
- val &= ~flagmask;
- val |= flags;
- return true;
- } catch (SettingNotFoundException &e) {
- return false;
- }
- }
- /***********
- * Setters *
- ***********/
- bool Settings::setEntry(const std::string &name, const void *data,
- bool set_group, bool set_default)
- {
- Settings *old_group = NULL;
- if (!checkNameValid(name))
- return false;
- if (!set_group && !checkValueValid(*(const std::string *)data))
- return false;
- {
- MutexAutoLock lock(m_mutex);
- SettingsEntry &entry = set_default ? m_defaults[name] : m_settings[name];
- old_group = entry.group;
- entry.value = set_group ? "" : *(const std::string *)data;
- entry.group = set_group ? *(Settings **)data : NULL;
- entry.is_group = set_group;
- }
- delete old_group;
- return true;
- }
- bool Settings::set(const std::string &name, const std::string &value)
- {
- if (!setEntry(name, &value, false, false))
- return false;
- doCallbacks(name);
- return true;
- }
- bool Settings::setDefault(const std::string &name, const std::string &value)
- {
- return setEntry(name, &value, false, true);
- }
- bool Settings::setGroup(const std::string &name, Settings *group)
- {
- return setEntry(name, &group, true, false);
- }
- bool Settings::setGroupDefault(const std::string &name, Settings *group)
- {
- return setEntry(name, &group, true, true);
- }
- bool Settings::setBool(const std::string &name, bool value)
- {
- return set(name, value ? "true" : "false");
- }
- bool Settings::setS16(const std::string &name, s16 value)
- {
- return set(name, itos(value));
- }
- bool Settings::setU16(const std::string &name, u16 value)
- {
- return set(name, itos(value));
- }
- bool Settings::setS32(const std::string &name, s32 value)
- {
- return set(name, itos(value));
- }
- bool Settings::setU64(const std::string &name, u64 value)
- {
- std::ostringstream os;
- os << value;
- return set(name, os.str());
- }
- bool Settings::setFloat(const std::string &name, float value)
- {
- return set(name, ftos(value));
- }
- bool Settings::setV2F(const std::string &name, v2f value)
- {
- std::ostringstream os;
- os << "(" << value.X << "," << value.Y << ")";
- return set(name, os.str());
- }
- bool Settings::setV3F(const std::string &name, v3f value)
- {
- std::ostringstream os;
- os << "(" << value.X << "," << value.Y << "," << value.Z << ")";
- return set(name, os.str());
- }
- bool Settings::setFlagStr(const std::string &name, u32 flags,
- const FlagDesc *flagdesc, u32 flagmask)
- {
- return set(name, writeFlagString(flags, flagdesc, flagmask));
- }
- bool Settings::setStruct(const std::string &name, const std::string &format,
- void *value)
- {
- std::string structstr;
- if (!serializeStructToString(&structstr, format, value))
- return false;
- return set(name, structstr);
- }
- bool Settings::setNoiseParams(const std::string &name,
- const NoiseParams &np, bool set_default)
- {
- Settings *group = new Settings;
- group->setFloat("offset", np.offset);
- group->setFloat("scale", np.scale);
- group->setV3F("spread", np.spread);
- group->setS32("seed", np.seed);
- group->setU16("octaves", np.octaves);
- group->setFloat("persistence", np.persist);
- group->setFloat("lacunarity", np.lacunarity);
- group->setFlagStr("flags", np.flags, flagdesc_noiseparams, np.flags);
- return setEntry(name, &group, true, set_default);
- }
- bool Settings::remove(const std::string &name)
- {
- MutexAutoLock lock(m_mutex);
- SettingEntries::iterator it = m_settings.find(name);
- if (it != m_settings.end()) {
- delete it->second.group;
- m_settings.erase(it);
- return true;
- }
- return false;
- }
- void Settings::clear()
- {
- MutexAutoLock lock(m_mutex);
- clearNoLock();
- }
- void Settings::clearDefaults()
- {
- MutexAutoLock lock(m_mutex);
- clearDefaultsNoLock();
- }
- void Settings::updateValue(const Settings &other, const std::string &name)
- {
- if (&other == this)
- return;
- MutexAutoLock lock(m_mutex);
- try {
- m_settings[name] = other.get(name);
- } catch (SettingNotFoundException &e) {
- }
- }
- void Settings::update(const Settings &other)
- {
- if (&other == this)
- return;
- MutexAutoLock lock(m_mutex);
- MutexAutoLock lock2(other.m_mutex);
- updateNoLock(other);
- }
- SettingsParseEvent Settings::parseConfigObject(const std::string &line,
- const std::string &end, std::string &name, std::string &value)
- {
- std::string trimmed_line = trim(line);
- if (trimmed_line.empty())
- return SPE_NONE;
- if (trimmed_line[0] == '#')
- return SPE_COMMENT;
- if (trimmed_line == end)
- return SPE_END;
- size_t pos = trimmed_line.find('=');
- if (pos == std::string::npos)
- return SPE_INVALID;
- name = trim(trimmed_line.substr(0, pos));
- value = trim(trimmed_line.substr(pos + 1));
- if (value == "{")
- return SPE_GROUP;
- if (value == "\"\"\"")
- return SPE_MULTILINE;
- return SPE_KVPAIR;
- }
- void Settings::updateNoLock(const Settings &other)
- {
- m_settings.insert(other.m_settings.begin(), other.m_settings.end());
- m_defaults.insert(other.m_defaults.begin(), other.m_defaults.end());
- }
- void Settings::clearNoLock()
- {
- for (SettingEntries::const_iterator it = m_settings.begin();
- it != m_settings.end(); ++it)
- delete it->second.group;
- m_settings.clear();
- clearDefaultsNoLock();
- }
- void Settings::clearDefaultsNoLock()
- {
- for (SettingEntries::const_iterator it = m_defaults.begin();
- it != m_defaults.end(); ++it)
- delete it->second.group;
- m_defaults.clear();
- }
- void Settings::registerChangedCallback(const std::string &name,
- SettingsChangedCallback cbf, void *userdata)
- {
- MutexAutoLock lock(m_callback_mutex);
- m_callbacks[name].emplace_back(cbf, userdata);
- }
- void Settings::deregisterChangedCallback(const std::string &name,
- SettingsChangedCallback cbf, void *userdata)
- {
- MutexAutoLock lock(m_callback_mutex);
- SettingsCallbackMap::iterator it_cbks = m_callbacks.find(name);
- if (it_cbks != m_callbacks.end()) {
- SettingsCallbackList &cbks = it_cbks->second;
- SettingsCallbackList::iterator position =
- std::find(cbks.begin(), cbks.end(), std::make_pair(cbf, userdata));
- if (position != cbks.end())
- cbks.erase(position);
- }
- }
- void Settings::doCallbacks(const std::string &name) const
- {
- MutexAutoLock lock(m_callback_mutex);
- SettingsCallbackMap::const_iterator it_cbks = m_callbacks.find(name);
- if (it_cbks != m_callbacks.end()) {
- SettingsCallbackList::const_iterator it;
- for (it = it_cbks->second.begin(); it != it_cbks->second.end(); ++it)
- (it->first)(name, it->second);
- }
- }
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