#include <cctype>
#include <algorithm>
-static Settings main_settings;
-Settings *g_settings = &main_settings;
+Settings *g_settings = nullptr; // Populated in main()
std::string g_settings_path;
-Settings::~Settings()
+Settings *Settings::s_layers[SL_TOTAL_COUNT] = {0}; // Zeroed by compiler
+std::unordered_map<std::string, const FlagDesc *> Settings::s_flags;
+
+
+Settings *Settings::createLayer(SettingsLayer sl, const std::string &end_tag)
{
- clear();
+ if ((int)sl < 0 || sl >= SL_TOTAL_COUNT)
+ throw new BaseException("Invalid settings layer");
+
+ Settings *&pos = s_layers[(size_t)sl];
+ if (pos)
+ throw new BaseException("Setting layer " + std::to_string(sl) + " already exists");
+
+ pos = new Settings(end_tag);
+ pos->m_settingslayer = sl;
+
+ if (sl == SL_GLOBAL)
+ g_settings = pos;
+ return pos;
}
-Settings & Settings::operator += (const Settings &other)
+Settings *Settings::getLayer(SettingsLayer sl)
{
- update(other);
+ sanity_check((int)sl >= 0 && sl < SL_TOTAL_COUNT);
+ return s_layers[(size_t)sl];
+}
- return *this;
+
+Settings::~Settings()
+{
+ MutexAutoLock lock(m_mutex);
+
+ if (m_settingslayer < SL_TOTAL_COUNT)
+ s_layers[(size_t)m_settingslayer] = nullptr;
+
+ // Compatibility
+ if (m_settingslayer == SL_GLOBAL)
+ g_settings = nullptr;
+
+ clearNoLock();
}
if (&other == this)
return *this;
+ // TODO: Avoid copying Settings objects. Make this private.
+ FATAL_ERROR_IF(m_settingslayer != SL_TOTAL_COUNT && other.m_settingslayer != SL_TOTAL_COUNT,
+ ("Tried to copy unique Setting layer " + std::to_string(m_settingslayer)).c_str());
+
MutexAutoLock lock(m_mutex);
MutexAutoLock lock2(other.m_mutex);
clearNoLock();
- updateNoLock(other);
+ m_settings = other.m_settings;
+ m_callbacks = other.m_callbacks;
return *this;
}
if (!is.good())
return false;
- return parseConfigLines(is, "");
+ return parseConfigLines(is);
}
-bool Settings::parseConfigLines(std::istream &is, const std::string &end)
+bool Settings::parseConfigLines(std::istream &is)
{
MutexAutoLock lock(m_mutex);
while (is.good()) {
std::getline(is, line);
- SettingsParseEvent event = parseConfigObject(line, end, name, value);
+ SettingsParseEvent event = parseConfigObject(line, name, value);
switch (event) {
case SPE_NONE:
case SPE_END:
return true;
case SPE_GROUP: {
- Settings *group = new Settings;
- if (!group->parseConfigLines(is, "}")) {
+ Settings *group = new Settings("}");
+ if (!group->parseConfigLines(is)) {
delete group;
return false;
}
}
}
- return end.empty();
+ // false (failure) if end tag not found
+ return m_end_tag.empty();
}
for (const auto &setting_it : m_settings)
printEntry(os, setting_it.first, setting_it.second, tab_depth);
+
+ // For groups this must be "}" !
+ if (!m_end_tag.empty()) {
+ for (u32 i = 0; i < tab_depth; i++)
+ os << "\t";
+
+ os << m_end_tag << "\n";
+ }
}
entry.group->writeLines(os, tab_depth + 1);
- for (u32 i = 0; i != tab_depth; i++)
- os << "\t";
- os << "}\n";
+ // Closing bracket handled by writeLines
} else {
os << name << " = ";
}
-bool Settings::updateConfigObject(std::istream &is, std::ostream &os,
- const std::string &end, u32 tab_depth)
+bool Settings::updateConfigObject(std::istream &is, std::ostream &os, u32 tab_depth)
{
SettingEntries::const_iterator it;
std::set<std::string> present_entries;
// in the object if existing
while (is.good() && !end_found) {
std::getline(is, line);
- SettingsParseEvent event = parseConfigObject(line, end, name, value);
+ SettingsParseEvent event = parseConfigObject(line, name, value);
switch (event) {
case SPE_END:
- os << line << (is.eof() ? "" : "\n");
+ // Skip end tag. Append later.
end_found = true;
break;
case SPE_MULTILINE:
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);
+ was_modified |= it->second.group->updateConfigObject(is, os, tab_depth + 1);
} else if (it == m_settings.end()) {
// Remove by skipping
was_modified = true;
- Settings removed_group; // Move 'is' to group end
+ Settings removed_group("}"); // Move 'is' to group end
std::stringstream ss;
- removed_group.updateConfigObject(is, ss, "}", tab_depth + 1);
+ removed_group.updateConfigObject(is, ss, tab_depth + 1);
break;
} else {
printEntry(os, name, it->second, tab_depth);
}
}
+ if (!line.empty() && is.eof())
+ os << "\n";
+
// 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())
was_modified = true;
}
+ // Append ending tag
+ if (!m_end_tag.empty()) {
+ os << m_end_tag << "\n";
+ was_modified |= !end_found;
+ }
+
return was_modified;
}
std::ifstream is(filename);
std::ostringstream os(std::ios_base::binary);
- bool was_modified = updateConfigObject(is, os, "");
+ bool was_modified = updateConfigObject(is, os);
is.close();
if (!was_modified)
* Getters *
***********/
-
-const SettingsEntry &Settings::getEntry(const std::string &name) const
+Settings *Settings::getParent() const
{
- MutexAutoLock lock(m_mutex);
+ // If the Settings object is within the hierarchy structure,
+ // iterate towards the origin (0) to find the next fallback layer
+ if (m_settingslayer >= SL_TOTAL_COUNT)
+ return nullptr;
- 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.");
+ for (int i = (int)m_settingslayer - 1; i >= 0; --i) {
+ if (s_layers[i])
+ return s_layers[i];
}
- return n->second;
+
+ // No parent
+ return nullptr;
}
-const SettingsEntry &Settings::getEntryDefault(const std::string &name) const
+const SettingsEntry &Settings::getEntry(const std::string &name) const
{
- MutexAutoLock lock(m_mutex);
+ {
+ MutexAutoLock lock(m_mutex);
- SettingEntries::const_iterator n;
- if ((n = m_defaults.find(name)) == m_defaults.end()) {
- throw SettingNotFoundException("Setting [" + name + "] not found.");
+ SettingEntries::const_iterator n;
+ if ((n = m_settings.find(name)) != m_settings.end())
+ return n->second;
}
- return n->second;
+
+ if (auto parent = getParent())
+ return parent->getEntry(name);
+
+ throw SettingNotFoundException("Setting [" + name + "] not found.");
}
}
-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));
u32 *flagmask) const
{
u32 flags = 0;
- u32 mask_default = 0;
- std::string value;
// Read default value (if there is any)
- if (getDefaultNoEx(name, value)) {
- flags = std::isdigit(value[0])
- ? stoi(value)
- : readFlagString(value, flagdesc, &mask_default);
- }
+ if (auto parent = getParent())
+ flags = parent->getFlagStr(name, flagdesc, flagmask);
// Apply custom flags "on top"
- value = get(name);
- u32 flags_user;
- u32 mask_user = U32_MAX;
- flags_user = std::isdigit(value[0])
- ? stoi(value) // Override default
- : readFlagString(value, flagdesc, &mask_user);
-
- flags &= ~mask_user;
- flags |= flags_user;
-
- if (flagmask)
- *flagmask = mask_default | mask_user;
-
- return flags;
-}
-
-// 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 (m_settings.find(name) != m_settings.end()) {
+ std::string value = get(name);
+ u32 flags_user;
+ u32 mask_user = U32_MAX;
+ flags_user = std::isdigit(value[0])
+ ? stoi(value) // Override default
+ : readFlagString(value, flagdesc, &mask_user);
+
+ flags &= ~mask_user;
+ flags |= flags_user;
+ if (flagmask)
+ *flagmask |= mask_user;
}
- if (!deSerializeStringToStruct(valstr, format, out, olen))
- return false;
-
- return true;
+ return flags;
}
bool Settings::getNoiseParams(const std::string &name, NoiseParams &np) const
{
- return getNoiseParamsFromGroup(name, np) || getNoiseParamsFromValue(name, np);
+ if (getNoiseParamsFromGroup(name, np) || getNoiseParamsFromValue(name, np))
+ return true;
+ if (auto parent = getParent())
+ return parent->getNoiseParams(name, np);
+
+ return false;
}
if (!getNoEx(name, value))
return false;
+ // Format: f32,f32,(f32,f32,f32),s32,s32,f32[,f32]
Strfnd f(value);
np.offset = stof(f.next(","));
{
MutexAutoLock lock(m_mutex);
- return (m_settings.find(name) != m_settings.end() ||
- m_defaults.find(name) != m_defaults.end());
+ if (m_settings.find(name) != m_settings.end())
+ return true;
+ if (auto parent = getParent())
+ return parent->exists(name);
+ return false;
}
std::vector<std::string> Settings::getNames() const
{
+ MutexAutoLock lock(m_mutex);
+
std::vector<std::string> names;
for (const auto &settings_it : m_settings) {
names.push_back(settings_it.first);
* 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 {
}
-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 {
***********/
bool Settings::setEntry(const std::string &name, const void *data,
- bool set_group, bool set_default)
+ bool set_group)
{
- Settings *old_group = NULL;
-
if (!checkNameValid(name))
return false;
if (!set_group && !checkValueValid(*(const std::string *)data))
return false;
+ Settings *old_group = NULL;
{
MutexAutoLock lock(m_mutex);
- SettingsEntry &entry = set_default ? m_defaults[name] : m_settings[name];
+ SettingsEntry &entry = 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;
+ if (set_group)
+ entry.group->m_end_tag = "}";
}
delete old_group;
bool Settings::set(const std::string &name, const std::string &value)
{
- if (!setEntry(name, &value, false, false))
+ if (!setEntry(name, &value, false))
return false;
doCallbacks(name);
}
+// TODO: Remove this function
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);
+ return getLayer(SL_DEFAULTS)->set(name, value);
}
-bool Settings::setGroupDefault(const std::string &name, Settings *group)
+bool Settings::setGroup(const std::string &name, const Settings &group)
{
- return setEntry(name, &group, true, true);
+ // Settings must own the group pointer
+ // avoid double-free by copying the source
+ Settings *copy = new Settings();
+ *copy = group;
+ return setEntry(name, ©, true);
}
}
-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)
+bool Settings::setNoiseParams(const std::string &name, const NoiseParams &np)
{
Settings *group = new Settings;
group->setFloat("lacunarity", np.lacunarity);
group->setFlagStr("flags", np.flags, flagdesc_noiseparams, np.flags);
- return setEntry(name, &group, true, set_default);
+ return setEntry(name, &group, true);
}
}
-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 &name, std::string &value)
{
std::string trimmed_line = trim(line);
return SPE_NONE;
if (trimmed_line[0] == '#')
return SPE_COMMENT;
- if (trimmed_line == end)
+ if (trimmed_line == m_end_tag)
return SPE_END;
size_t pos = trimmed_line.find('=');
}
-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::setDefault(const std::string &name, const FlagDesc *flagdesc,
u32 flags)
{
- m_flags[name] = flagdesc;
+ s_flags[name] = flagdesc;
setDefault(name, writeFlagString(flags, flagdesc, U32_MAX));
}
const FlagDesc *Settings::getFlagDescFallback(const std::string &name) const
{
- auto it = m_flags.find(name);
- return it == m_flags.end() ? nullptr : it->second;
+ auto it = s_flags.find(name);
+ return it == s_flags.end() ? nullptr : it->second;
}
void Settings::registerChangedCallback(const std::string &name,
}
}
+void Settings::removeSecureSettings()
+{
+ for (const auto &name : getNames()) {
+ if (name.compare(0, 7, "secure.") != 0)
+ continue;
+
+ errorstream << "Secure setting " << name
+ << " isn't allowed, so was ignored."
+ << std::endl;
+ remove(name);
+ }
+}
+
void Settings::doCallbacks(const std::string &name) const
{
MutexAutoLock lock(m_callback_mutex);
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