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author | ShadowNinja <shadowninja@minetest.net> | 2017-06-03 14:55:10 -0400 |
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committer | ShadowNinja <shadowninja@minetest.net> | 2017-06-03 14:55:10 -0400 |
commit | caecdb681c428c1aab9c0f7eec2570c0460f995c (patch) | |
tree | e5115982ea59bbf2343ba9b35bc4a0cfbb56f407 /src/metadata.cpp | |
parent | 81d56b94919dceb7b2e51d70b21a7ca22f852bd5 (diff) | |
parent | 80dc961d24e1964e25d57039ddb2ba639f9f4d22 (diff) | |
download | minetest-caecdb681c428c1aab9c0f7eec2570c0460f995c.tar.gz minetest-caecdb681c428c1aab9c0f7eec2570c0460f995c.tar.bz2 minetest-caecdb681c428c1aab9c0f7eec2570c0460f995c.zip |
Merge 0.4.16 into stable-0.4
Diffstat (limited to 'src/metadata.cpp')
-rw-r--r-- | src/metadata.cpp | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/metadata.cpp b/src/metadata.cpp new file mode 100644 index 000000000..833735464 --- /dev/null +++ b/src/metadata.cpp @@ -0,0 +1,108 @@ +/* +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 "metadata.h" +#include "exceptions.h" +#include "gamedef.h" +#include "log.h" +#include <sstream> +#include "constants.h" // MAP_BLOCKSIZE +#include <sstream> + +/* + Metadata +*/ + +void Metadata::clear() +{ + m_stringvars.clear(); +} + +bool Metadata::empty() const +{ + return m_stringvars.size() == 0; +} + +size_t Metadata::size() const +{ + return m_stringvars.size(); +} + +bool Metadata::contains(const std::string &name) const +{ + return m_stringvars.find(name) != m_stringvars.end(); +} + +bool Metadata::operator==(const Metadata &other) const +{ + if (size() != other.size()) + return false; + + for (StringMap::const_iterator it = m_stringvars.begin(); + it != m_stringvars.end(); ++it) { + if (!other.contains(it->first) || + other.getString(it->first) != it->second) + return false; + } + + return true; +} + +const std::string &Metadata::getString(const std::string &name, u16 recursion) const +{ + StringMap::const_iterator it = m_stringvars.find(name); + if (it == m_stringvars.end()) { + static const std::string empty_string = std::string(""); + return empty_string; + } + + return resolveString(it->second, recursion); +} + +/** + * Sets var to name key in the metadata storage + * + * @param name + * @param var + * @return true if key-value pair is created or changed + */ +bool Metadata::setString(const std::string &name, const std::string &var) +{ + if (var.empty()) { + m_stringvars.erase(name); + return true; + } + + StringMap::iterator it = m_stringvars.find(name); + if (it != m_stringvars.end() && it->second == var) { + return false; + } + + m_stringvars[name] = var; + return true; +} + +const std::string &Metadata::resolveString(const std::string &str, u16 recursion) const +{ + if (recursion <= 1 && str.substr(0, 2) == "${" && str[str.length() - 1] == '}') { + return getString(str.substr(2, str.length() - 3), recursion + 1); + } else { + return str; + } +} |