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#include "expresscpp/path_to_regexp.hpp" |
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#include <algorithm> |
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#include <stdexcept> |
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#define EXPRESSCPP_CONFIG_DEBUG_PATH_TO_REGEX 0 |
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namespace expresscpp { |
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using namespace std::string_literals; |
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std::string pathToRegExpString(std::string_view registered_path, std::vector<Key>& keys, PathToRegExpOptions op, |
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std::string_view parent_path) { |
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std::string regex = std::string("^") + parent_path.data() + registered_path.data(); |
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size_t key_index = 0; |
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std::string::size_type start_pos = 0; |
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while (start_pos != std::string::npos) { |
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start_pos = regex.find(':', start_pos); |
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if (start_pos != std::string::npos) { |
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const auto dash_end_pos = regex.find('-', start_pos); |
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const auto slash_end_pos = regex.find('/', start_pos); |
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const auto end_pos = std::min(dash_end_pos, slash_end_pos); |
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Key tmp_key; |
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const auto key_name = regex.substr(start_pos + 1, end_pos - start_pos - 1); |
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if (key_name.empty()) { |
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throw std::runtime_error(std::string("Empty parameter name found in path: ") + registered_path.data()); |
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} |
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tmp_key.index_ = key_index++; |
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tmp_key.name_ = key_name; |
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regex.replace(start_pos, end_pos - start_pos, "(\\S+)"); |
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keys.emplace_back(tmp_key); |
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} |
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} |
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if (op.end) { |
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regex += "$"; |
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} else if (op.strict) { |
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regex += "/\\S*"; |
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} else { |
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regex += "\\S*"; |
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} |
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#if EXPRESSCPP_CONFIG_DEBUG_PATH_TO_REGEX |
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if (keys.size() > 0) { |
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std::cout << "printing keys ***********************" << std::endl; |
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for (const auto& k : keys) { |
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std::cout << "key found : " |
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<< "\"" << k.name_ << "\"" << std::endl; |
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} |
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std::cout << "printing keys **********************" << std::endl; |
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} |
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#endif |
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return regex; |
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} |
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} // namespace expresscpp |