| /* |
| * Copyright 2021 Google LLC |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "io/smbus/smbus.h" |
| |
| #include <optional> |
| |
| #include "absl/strings/string_view.h" |
| #include "re2/re2.h" |
| |
| namespace ecclesia { |
| |
| std::optional<SmbusLocation> SmbusLocation::FromString( |
| absl::string_view smbus_location) { |
| static constexpr LazyRE2 kRegex = {"(\\d+)-([[:xdigit:]]{2})$"}; |
| int bus_num, address_num; |
| if (!RE2::FullMatch(smbus_location, *kRegex, RE2::Arg(&bus_num), |
| RE2::Hex(&address_num))) { |
| return std::nullopt; |
| } |
| return SmbusLocation::TryMake(bus_num, address_num); |
| } |
| |
| } // namespace ecclesia |
