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.
27 void Metadata::clear()
32 bool Metadata::empty() const
34 return m_stringvars.empty();
37 size_t Metadata::size() const
39 return m_stringvars.size();
42 bool Metadata::contains(const std::string &name) const
44 return m_stringvars.find(name) != m_stringvars.end();
47 bool Metadata::operator==(const Metadata &other) const
49 if (size() != other.size())
52 for (const auto &sv : m_stringvars) {
53 if (!other.contains(sv.first) || other.getString(sv.first) != sv.second)
60 const std::string &Metadata::getString(const std::string &name, u16 recursion) const
62 StringMap::const_iterator it = m_stringvars.find(name);
63 if (it == m_stringvars.end()) {
64 static const std::string empty_string = std::string("");
68 return resolveString(it->second, recursion);
72 * Sets var to name key in the metadata storage
76 * @return true if key-value pair is created or changed
78 bool Metadata::setString(const std::string &name, const std::string &var)
81 m_stringvars.erase(name);
85 StringMap::iterator it = m_stringvars.find(name);
86 if (it != m_stringvars.end() && it->second == var) {
90 m_stringvars[name] = var;
94 const std::string &Metadata::resolveString(const std::string &str, u16 recursion) const
96 if (recursion <= 1 && str.substr(0, 2) == "${" && str[str.length() - 1] == '}') {
97 return getString(str.substr(2, str.length() - 3), recursion + 1);