static std::string
loadFile (boost::property_tree::ptree &config,
const boost::filesystem::path &file)
{
boost::filesystem::path extension = file.extension();
boost::filesystem::path extension2 = file.stem().extension();
std::string fileName = file.filename().string();
boost::property_tree::ptree readConfig;
if (extension2.string() == ".conf") {
if (extension.string() == ".json") {
boost::property_tree::read_json (file.string(), readConfig);
} else if (extension.string() == ".info") {
boost::property_tree::read_info (file.string(), readConfig);
} else if (extension.string() == ".ini") {
boost::property_tree::read_ini (file.string(), readConfig);
} else if (extension.string() == ".xml") {
boost::property_tree::read_xml (file.string(), readConfig);
} else {
throw ParseException ("Unknonw file format");
}
} else {
throw ParseException ("Unknonw file format");
}
mergePropertyTrees (config, readConfig);
config.put ("configPath", file.parent_path().string() );
fileName = fileName.substr (0, fileName.size() - extension.string().size() );
fileName = fileName.substr (0, fileName.size() - extension2.string().size() );
return fileName;
}
static void
loadModulesConfigFromDir (boost::property_tree::ptree &config,
const boost::filesystem::path &dir, const boost::filesystem::path &parentDir)
{
GST_INFO ("Looking for config files in %s", dir.string().c_str() );
if (!boost::filesystem::is_directory (dir) ) {
GST_WARNING ("Unable to load config files from: %s, it is not a directory",
dir.string().c_str() );
return;
}
boost::filesystem::directory_iterator end_itr;
for ( boost::filesystem::directory_iterator itr ( dir ); itr != end_itr;
++itr ) {
if (boost::filesystem::is_regular (*itr) ) {
try {
boost::property_tree::ptree moduleConfig;
std::string fileName = loadFile (moduleConfig, itr->path() );
std::string key = diffPathToKey (itr->path().parent_path(), parentDir);
boost::property_tree::ptree loadedConfig;
key = key.empty() ? "modules" : "modules." + key;
key += "." + fileName;
loadedConfig.put_child (key, moduleConfig);
mergePropertyTrees (config, loadedConfig);
GST_INFO ("Loaded module config from: %s", itr->path().string().c_str() );
} catch (ParseException &e) {
GST_ERROR ("Error reading configuration: %s", e.what());
std::cerr << "Error reading configuration: " << e.what() << std::endl;
}
} else if (boost::filesystem::is_directory (*itr) ) {
loadModulesConfigFromDir (config, itr->path(), parentDir);
}
}
}
void
mergePropertyTrees (boost::property_tree::ptree &ptMerged,
const boost::property_tree::ptree &ptSecond, int level )
{
// Value or object or array
if (level > 0 && ptSecond.empty() ) {
// Copy value
ptMerged = ptSecond;
} else if (level > 0 && ptSecond.count (std::string() ) == ptSecond.size() ) {
// Copy array
ptMerged = ptSecond;
} else {
auto it = ptSecond.begin();
for (; it != ptSecond.end(); ++it) {
boost::property_tree::ptree child = ptMerged.get_child (it->first.data(),
boost::property_tree::ptree() );
mergePropertyTrees (child, it->second, level + 1);
ptMerged.erase (it->first.data() );
ptMerged.add_child (it->first.data(), child);
}
}
}