Esempi in C++ (Cpp) per t_map::insert

Esempio n. 1

// reads property maps from data files
bool get_fileprops(const char* pcFile, t_map& mapProps)
{
	std::ifstream ifstr(pcFile);
	if(!ifstr)
	{
		tl::log_err("Cannot open file \"", pcFile, "\".");
		return 0;
	}

	std::string strLine;
	while(std::getline(ifstr, strLine))
	{
		tl::trim(strLine);
		// only collect lines starting with "#"
		if(!strLine.size() || strLine[0] != '#')
			continue;
		// ignore comments starting with "##"
		if(strLine.size()>=2 && strLine[0]=='#' && strLine[1]=='#')
			continue;

		strLine = strLine.substr(1);
		std::pair<std::string, std::string> strKeyVal = 
			tl::split_first(strLine, std::string("="), 1);

		std::string& strKey = strKeyVal.first;
		std::string& _strVal = strKeyVal.second;

		if(!strKey.size())
			continue;


		std::vector<t_real> vecHKLE;
		tl::get_tokens<t_real>(_strVal, std::string(" \t"), vecHKLE);

		// value & error pair
		if(_strVal.find("+-") != std::string::npos)
		{
			std::pair<std::string, std::string> strValErr =
				tl::split_first(_strVal, std::string("+-"), 1, 1);

			std::string& strVal = strValErr.first;
			std::string& strErr = strValErr.second;

			//std::cout << strKey << ": " << strVal << ", " << strErr << std::endl;
			if(strVal.length())
			{
				t_real dVal = tl::str_to_var<t_real>(strVal);
				t_real dErr = tl::str_to_var<t_real>(strErr);

				mapProps.insert(t_map::value_type(strKey, {dVal, dErr}));
			}
		}
		// hklE values -> split them, e.g. "scan_dir = 0 0 0 1" -> "scan_dir_h = 0", ...
		else if(vecHKLE.size()==3 || vecHKLE.size()==4)
		{
			std::vector<std::string> vecSuffixes = {"_h", "_k", "_l", "_E"};

			std::size_t iNumCoords = std::min(vecSuffixes.size(), vecHKLE.size());
			for(std::size_t iCoord=0; iCoord<iNumCoords; ++iCoord)
			{
				std::string strNewKey = strKey + vecSuffixes[iCoord];
				mapProps.insert(t_map::value_type(strNewKey, {vecHKLE[iCoord], 0.}));
			}
		}
		else
		{
			tl::log_warn("Unknown key: \"", strKey, "\".");
			continue;
		}
	}

	return 1;
}