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123 lines
3.8 KiB
123 lines
3.8 KiB
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_VINTF_UTILS_H
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#define ANDROID_VINTF_UTILS_H
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#include <memory>
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#include <mutex>
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#include <utils/Errors.h>
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#include <vintf/FileSystem.h>
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#include <vintf/PropertyFetcher.h>
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#include <vintf/RuntimeInfo.h>
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#include <vintf/parse_xml.h>
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namespace android {
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namespace vintf {
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namespace details {
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template <typename T>
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status_t fetchAllInformation(const FileSystem* fileSystem, const std::string& path, T* outObject,
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std::string* error) {
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if (outObject->fileName().empty()) {
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outObject->setFileName(path);
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} else {
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outObject->setFileName(outObject->fileName() + ":" + path);
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}
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std::string info;
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status_t result = fileSystem->fetch(path, &info, error);
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if (result != OK) {
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return result;
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}
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bool success = fromXml(outObject, info, error);
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if (!success) {
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if (error) {
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*error = "Illformed file: " + path + ": " + *error;
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}
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return BAD_VALUE;
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}
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return OK;
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}
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// TODO(b/70628538): Do not infer from Shipping API level.
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inline Level convertFromApiLevel(size_t apiLevel) {
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if (apiLevel < 26) {
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return Level::LEGACY;
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} else if (apiLevel == 26) {
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return Level::O;
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} else if (apiLevel == 27) {
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return Level::O_MR1;
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} else {
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return Level::UNSPECIFIED;
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}
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}
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class PropertyFetcherImpl : public PropertyFetcher {
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public:
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virtual std::string getProperty(const std::string& key,
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const std::string& defaultValue = "") const;
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virtual uint64_t getUintProperty(const std::string& key, uint64_t defaultValue,
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uint64_t max = UINT64_MAX) const;
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virtual bool getBoolProperty(const std::string& key, bool defaultValue) const;
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};
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class PropertyFetcherNoOp : public PropertyFetcher {
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public:
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virtual std::string getProperty(const std::string& key,
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const std::string& defaultValue = "") const override;
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virtual uint64_t getUintProperty(const std::string& key, uint64_t defaultValue,
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uint64_t max = UINT64_MAX) const override;
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virtual bool getBoolProperty(const std::string& key, bool defaultValue) const override;
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};
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// Merge src into dst.
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// postcondition (if successful): *src == empty.
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template <typename T>
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static bool mergeField(T* dst, T* src, const T& empty = T{}) {
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if (*dst == *src) {
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*src = empty;
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return true; // no conflict
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}
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if (*src == empty) {
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return true;
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}
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if (*dst == empty) {
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*dst = std::move(*src);
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*src = empty;
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return true;
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}
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return false;
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}
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// Check legacy instances (i.e. <version> + <interface> + <instance>) can be
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// converted into FqInstance because forEachInstance relies on FqInstance.
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// If error and appendedError is not null, error message is appended to appendedError.
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[[nodiscard]] bool canConvertToFqInstance(const std::string& package, const Version& version,
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const std::string& interface, const std::string& instance,
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HalFormat format, std::string* appendedError);
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} // namespace details
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} // namespace vintf
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} // namespace android
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#endif
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