mirror of https://github.com/minetest/minetest.git
145 lines
3.7 KiB
C++
145 lines
3.7 KiB
C++
/*
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Minetest
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Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "metadata.h"
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#include "log.h"
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/*
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IMetadata
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*/
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bool IMetadata::operator==(const IMetadata &other) const
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{
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StringMap this_map_, other_map_;
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const StringMap &this_map = getStrings(&this_map_);
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const StringMap &other_map = other.getStrings(&other_map_);
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if (this_map.size() != other_map.size())
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return false;
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for (const auto &this_pair : this_map) {
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const auto &other_pair = other_map.find(this_pair.first);
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if (other_pair == other_map.cend() || other_pair->second != this_pair.second)
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return false;
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}
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return true;
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}
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const std::string &IMetadata::getString(const std::string &name, std::string *place,
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u16 recursion) const
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{
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const std::string *raw = getStringRaw(name, place);
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if (!raw) {
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static const std::string empty_string = std::string("");
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return empty_string;
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}
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return resolveString(*raw, place, recursion, true);
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}
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bool IMetadata::getStringToRef(const std::string &name,
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std::string &str, u16 recursion) const
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{
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const std::string *raw = getStringRaw(name, &str);
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if (!raw)
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return false;
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const std::string &resolved = resolveString(*raw, &str, recursion, true);
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if (&resolved != &str)
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str = resolved;
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return true;
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}
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const std::string &IMetadata::resolveString(const std::string &str, std::string *place,
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u16 recursion, bool deprecated) const
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{
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if (recursion <= 1 && str_starts_with(str, "${") && str.back() == '}') {
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if (deprecated) {
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warningstream << "Deprecated use of recursive resolution syntax in metadata: ";
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safe_print_string(warningstream, str);
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warningstream << std::endl;
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}
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// It may be the case that &str == place, but that's fine.
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return getString(str.substr(2, str.length() - 3), place, recursion + 1);
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}
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return str;
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}
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/*
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SimpleMetadata
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*/
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void SimpleMetadata::clear()
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{
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m_stringvars.clear();
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m_modified = true;
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}
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bool SimpleMetadata::empty() const
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{
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return m_stringvars.empty();
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}
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size_t SimpleMetadata::size() const
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{
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return m_stringvars.size();
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}
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bool SimpleMetadata::contains(const std::string &name) const
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{
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return m_stringvars.find(name) != m_stringvars.end();
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}
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const StringMap &SimpleMetadata::getStrings(StringMap *) const
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{
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return m_stringvars;
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}
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const std::vector<std::string> &SimpleMetadata::getKeys(std::vector<std::string> *place) const
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{
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place->clear();
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place->reserve(m_stringvars.size());
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for (const auto &pair : m_stringvars)
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place->push_back(pair.first);
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return *place;
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}
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const std::string *SimpleMetadata::getStringRaw(const std::string &name, std::string *) const
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{
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const auto found = m_stringvars.find(name);
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return found != m_stringvars.cend() ? &found->second : nullptr;
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}
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bool SimpleMetadata::setString(const std::string &name, std::string_view var)
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{
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if (var.empty()) {
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if (m_stringvars.erase(name) == 0)
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return false;
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} else {
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StringMap::iterator it = m_stringvars.find(name);
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if (it != m_stringvars.end() && it->second == var)
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return false;
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m_stringvars[name].assign(var);
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}
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m_modified = true;
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return true;
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}
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