lidavidm commented on code in PR #2918:
URL: https://github.com/apache/arrow-adbc/pull/2918#discussion_r2153762988
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c/driver_manager/adbc_driver_manager.cc:
##########
@@ -114,7 +128,228 @@ struct OwnedError {
}
};
+std::filesystem::path UserConfigDir() {
+ std::filesystem::path config_dir;
+#if defined(_WIN32)
+ size_t required_size;
+ _wgetenv_s(&required_size, NULL, 0, L"AppData");
+ if (required_size == 0) {
+ return config_dir;
+ }
+
+ std::wstring app_data_value;
+ app_data_value.resize(required_size);
+ _wgetenv_s(&required_size, app_data_value.data(), required_size, L"AppData");
+ std::filesystem::path dir(app_data_value);
+ if (!dir.empty()) {
+ config_dir = std::filesystem::path(dir);
+ config_dir /= "ADBC/drivers";
+ }
+#elif defined(__APPLE__)
+ auto dir = std::getenv("HOME");
+ if (dir) {
+ config_dir = std::filesystem::path(dir);
+ config_dir /= "Library/Application Support/ADBC";
+ }
+#elif defined(__linux__)
+ auto dir = std::getenv("XDG_CONFIG_HOME");
+ if (!dir) {
+ dir = std::getenv("HOME");
+ if (dir) {
+ config_dir = std::filesystem::path(dir) /= ".config";
+ }
+ } else {
+ config_dir = std::filesystem::path(dir);
+ }
+
+ if (!config_dir.empty()) {
+ config_dir /= "adbc";
+ }
+#endif
+
+ return config_dir;
+}
+
+#ifdef _WIN32
+using char_type = wchar_t;
+
+std::string utf8_encode(const std::wstring& wstr) {
Review Comment:
This isn't resolved? We should try to follow the existing convention
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