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Add a limit to node meta data resolving recursion

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This commit is contained in:
ShadowNinja 2014-04-27 21:31:46 -04:00
parent d3ee617f37
commit e17f140be0
2 changed files with 35 additions and 22 deletions
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31
src/nodemetadata.cpp
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@ -191,3 +191,34 @@ void NodeMetadataList::clear()
}
m_data.clear();
}
std::string NodeMetadata::getString(const std::string &name, unsigned short recursion) const
{
std::map<std::string, std::string>::const_iterator it;
it = m_stringvars.find(name);
if (it == m_stringvars.end()) {
return "";
}
return resolveString(it->second, recursion);
}
void NodeMetadata::setString(const std::string &name, const std::string &var)
{
if (var.empty()) {
m_stringvars.erase(name);
} else {
m_stringvars[name] = var;
}
}
std::string NodeMetadata::resolveString(const std::string &str, unsigned short recursion) const
{
if (recursion > 1) {
return str;
}
if (str.substr(0, 2) == "${" && str[str.length() - 1] == '}') {
return getString(str.substr(2, str.length() - 3), recursion + 1);
}
return str;
}

26
src/nodemetadata.h
View File

@ -49,28 +49,10 @@ public:
void clear();
// Generic key/value store
std::string getString(const std::string &name) const
{
std::map<std::string, std::string>::const_iterator i;
i = m_stringvars.find(name);
if(i == m_stringvars.end())
return "";
return i->second;
}
void setString(const std::string &name, const std::string &var)
{
if(var.empty())
m_stringvars.erase(name);
else
m_stringvars[name] = var;
}
// support variable names in values
std::string resolveString(const std::string &str) const
{
if(str.substr(0,2) == "${" && str[str.length()-1] == '}')
return getString(str.substr(2,str.length()-3));
return str;
}
std::string getString(const std::string &name, unsigned short recursion = 0) const;
void setString(const std::string &name, const std::string &var);
// Support variable names in values
std::string resolveString(const std::string &str, unsigned short recursion = 0) const;
std::map<std::string, std::string> getStrings() const
{
return m_stringvars;