3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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.
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.
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.
21 #include "exceptions.h"
25 #include "constants.h" // MAP_BLOCKSIZE
32 void Metadata::clear()
37 bool Metadata::empty() const
39 return m_stringvars.size() == 0;
42 size_t Metadata::size() const
44 return m_stringvars.size();
47 bool Metadata::contains(const std::string &name) const
49 return m_stringvars.find(name) != m_stringvars.end();
52 bool Metadata::operator==(const Metadata &other) const
54 if (size() != other.size())
57 for (StringMap::const_iterator it = m_stringvars.begin();
58 it != m_stringvars.end(); ++it) {
59 if (!other.contains(it->first) ||
60 other.getString(it->first) != it->second)
67 const std::string &Metadata::getString(const std::string &name, u16 recursion) const
69 StringMap::const_iterator it = m_stringvars.find(name);
70 if (it == m_stringvars.end()) {
71 static const std::string empty_string = std::string("");
75 return resolveString(it->second, recursion);
79 * Sets var to name key in the metadata storage
83 * @return true if key-value pair is created or changed
85 bool Metadata::setString(const std::string &name, const std::string &var)
88 m_stringvars.erase(name);
92 StringMap::iterator it = m_stringvars.find(name);
93 if (it != m_stringvars.end() && it->second == var) {
97 m_stringvars[name] = var;
101 const std::string &Metadata::resolveString(const std::string &str, u16 recursion) const
103 if (recursion <= 1 && str.substr(0, 2) == "${" && str[str.length() - 1] == '}') {
104 return getString(str.substr(2, str.length() - 3), recursion + 1);