Files
MapLibreParticleLab/include/llmr/util/token.hpp

50 lines
1.2 KiB
C++

#ifndef LLMR_UTIL_TOKEN
#define LLMR_UTIL_TOKEN
#ifdef __linux__
#include <boost/regex.hpp>
namespace regex_impl = boost;
#else
#include <regex>
namespace regex_impl = std;
#endif
namespace llmr {
namespace util {
namespace detail {
const regex_impl::regex tokenRegex("\\{\\{(\\w+)\\}\\}");
const regex_impl::sregex_token_iterator tokensEnd = regex_impl::sregex_token_iterator();
}
template <typename Tokens>
std::string replaceTokens(const std::string &source, const Tokens &tokens) {
std::string result;
result.reserve(source.size());
bool token = false;
for (auto token_it = regex_impl::sregex_token_iterator(source.begin(), source.end(),
detail::tokenRegex, {-1, 1});
token_it != detail::tokensEnd; ++token_it, token = !token) {
if (!token_it->matched) {
continue;
}
if (token) {
const auto it_prop = tokens.find(token_it->str());
if (it_prop != tokens.end()) {
result += it_prop->second;
}
} else {
result += token_it->str();
}
}
return result;
}
} // end namespace util
} // end namespace llmr
#endif