Method evaluate

Sming/Core/Data/Stream/SectionTemplate.cpp:300–490

}

String SectionTemplate::evaluate(char*& expr)
{
	if(*expr != '!') {
		auto sep = findSep(expr);
		if(sep == nullptr) {
			sep = expr + strlen(expr);
		} else {
			*sep = '\0';
		}
		String s = getValue(expr);
		*sep = '_';
		expr = sep + 1;
		return s;
	}

	auto exprStart = expr;
	*expr = 'Q';

	// Process conditional expressions such as {length:varname}, {width:10:text to pad}
	ArgList args(*this);

	auto ptr = findSep(expr + 1);
	if(*ptr == '}') {
		*ptr++ = '\0';
	} else if(*ptr != '\0') {
		// {cmd} or {cmd:value...}
		*ptr++ = '\0'; // Terminate cmd
		ptr = args.parse(ptr);
	}

	int i = commandStrings.indexOf(expr);
	auto field = Command(i + 1);

	expr = ptr;

	switch(field) {
	case Command::Qunknown:
		break;

	case Command::Qas_int:
		return String(args[0].toInt());

	case Command::Qas_float:
		return String(args[0].toFloat());

	case Command::Qas_string: {
		/*
		 * TODO: Find/write strQuote() helper function to ensure any containing quotes are escaped.
		 * This will be format-specific so perhaps another callback or look at putting Stream/Format
		 * functions into classes.
		 */
		String s;
		s += '"';
		s += args[0];
		s += '"';
		return s;
	}