diff options
Diffstat (limited to 'src/metadata.cpp')
-rw-r--r-- | src/metadata.cpp | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/metadata.cpp b/src/metadata.cpp index 3cc45f919..2ce9af5af 100644 --- a/src/metadata.cpp +++ b/src/metadata.cpp @@ -76,13 +76,27 @@ const std::string &Metadata::getString(const std::string &name, return resolveString(it->second, recursion); } -void Metadata::setString(const std::string &name, const std::string &var) +/** + * 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); - } else { - m_stringvars[name] = var; + 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, |