| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * 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 "utils.h" |
| |
| #include <sstream> |
| |
| #include "parse_string.h" |
| |
| namespace android::vintf::details { |
| |
| bool canConvertToFqInstance(const std::string& package, const Version& version, |
| const std::string& interface, const std::string& instance, |
| HalFormat format, std::string* appendedError) { |
| if (FqInstance::from(package, version.majorVer, version.minorVer, interface, instance) |
| .has_value()) { |
| return true; |
| } |
| if (appendedError == nullptr) { |
| return false; |
| } |
| |
| // Attempt to construct a good error message. |
| std::stringstream ss; |
| ss << "Invalid instance: '"; |
| if (format == HalFormat::AIDL) { |
| ss << toAidlFqnameString(package, interface, instance) << " (@" << version.minorVer << ")"; |
| } else { |
| ss << toFQNameString(package, version, interface, instance); |
| } |
| ss << "'. "; |
| |
| // Attempt to guess the source of error. |
| bool foundError = false; |
| if (!FqInstance::from(package).has_value()) { |
| ss << "Package '" << package |
| << "' should have the format [a-zA-Z_][a-zA-Z0-9_]*(\\.[a-zA-Z_][a-zA-Z0-9_]*)*"; |
| foundError = true; |
| } |
| |
| std::optional<FqInstance> convertedInterface = FqInstance::from(interface); |
| if (!convertedInterface.has_value() || !convertedInterface->hasInterface()) { |
| ss << "Interface '" << interface << "' should have the format I[a-zA-Z0-9_]*"; |
| foundError = true; |
| } |
| |
| if (!foundError) { |
| ss << "Unknown error."; |
| } |
| ss << "\n"; |
| |
| *appendedError += ss.str(); |
| return false; |
| } |
| |
| } // namespace android::vintf::details |