/*
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* Copyright (C) 2019 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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#include "linkerconfig/variables.h"
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#include <android-base/properties.h>
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#include "linkerconfig/log.h"
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namespace android {
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namespace linkerconfig {
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namespace modules {
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std::map<std::string, std::string> Variables::variables_;
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std::optional<std::string> Variables::GetValue(const std::string& variable) {
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// If variable is in predefined key-value pair, use this value
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if (variables_.find(variable) != variables_.end() &&
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!variables_[variable].empty()) {
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return {variables_[variable]};
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}
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// If variable is defined as property, use this value
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std::string prop_value = android::base::GetProperty(variable, "");
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if (!prop_value.empty()) {
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return {prop_value};
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}
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// If cannot find variable, return default value
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return std::nullopt;
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}
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void Variables::AddValue(const std::string& key, const std::string& value) {
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variables_[key] = value;
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}
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} // namespace modules
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} // namespace linkerconfig
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} // namespace android
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