| // Copyright 2022 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "typecd/pdo.h" |
| |
| #include <string> |
| |
| #include <base/files/file_util.h> |
| #include <re2/re2.h> |
| |
| namespace { |
| // PDOs can have index 1 to 7. |
| constexpr int kMaxPdoIndex = 7; |
| constexpr char kPdoTypeRegex[] = R"((\d):(\w+))"; |
| |
| // Helper function to map type names to their corresponding enum. |
| typecd::Pdo::Type ParseType(const std::string& type) { |
| if (type == "fixed_supply") |
| return typecd::Pdo::Type::kFixedSupply; |
| else if (type == "variable_supply") |
| return typecd::Pdo::Type::kVariableSupply; |
| else if (type == "battery") |
| return typecd::Pdo::Type::kBattery; |
| else if (type == "programmable_supply") |
| return typecd::Pdo::Type::kPPS; |
| else |
| return typecd::Pdo::Type::kNone; |
| } |
| |
| } // namespace |
| |
| namespace typecd { |
| |
| std::unique_ptr<Pdo> Pdo::MakePdo(const base::FilePath& syspath) { |
| if (!base::DirectoryExists(syspath)) { |
| LOG(ERROR) << "Invalid path for PDO: " << syspath; |
| return nullptr; |
| } |
| |
| int index; |
| std::string type_str; |
| if (!RE2::FullMatch(syspath.BaseName().value(), kPdoTypeRegex, &index, |
| &type_str)) |
| return nullptr; |
| |
| auto type = ParseType(type_str); |
| if (type == Type::kNone) { |
| LOG(ERROR) << "Invalid PDO type, path: " << syspath; |
| return nullptr; |
| } |
| |
| if (index < 1 || index > kMaxPdoIndex) { |
| LOG(ERROR) << "Invalid PDO index, path: " << syspath; |
| return nullptr; |
| } |
| |
| return std::make_unique<Pdo>(syspath, type, index); |
| } |
| |
| Pdo::Pdo(const base::FilePath& syspath, Pdo::Type type, int index) |
| : syspath_(syspath), type_(type), index_(index) {} |
| |
| } // namespace typecd |