53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
#ifndef MBGL_UTIL_TOKEN
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#define MBGL_UTIL_TOKEN
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#ifdef __linux__
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#include <boost/regex.hpp>
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namespace regex_impl = boost;
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#else
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#include <regex>
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namespace regex_impl = std;
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#endif
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#include <map>
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namespace mbgl {
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namespace util {
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namespace detail {
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const regex_impl::regex tokenRegex("\\{([\\w-]+)\\}");
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const regex_impl::sregex_token_iterator tokensEnd = regex_impl::sregex_token_iterator();
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}
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template <typename Lookup>
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std::string replaceTokens(const std::string &source, const Lookup &lookup) {
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std::string result;
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result.reserve(source.size());
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bool token = false;
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for (auto token_it = regex_impl::sregex_token_iterator(source.begin(), source.end(),
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detail::tokenRegex, {-1, 1});
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token_it != detail::tokensEnd; ++token_it, token = !token) {
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if (!token_it->matched) {
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continue;
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}
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result += token ? lookup(token_it->str()) : token_it->str();
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}
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return result;
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}
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template <typename T>
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inline std::string replaceTokens(const std::string &source, const std::map<std::string, T> &properties) {
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return replaceTokens(source, [&properties](const std::string &token) -> std::string {
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const auto it_prop = properties.find(token);
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return it_prop != properties.end() ? toString(it_prop->second) : "";
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});
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}
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} // end namespace util
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} // end namespace mbgl
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#endif
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