| /* |
| * Copyright (C) 2016 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 "link/ProductFilter.h" |
| |
| namespace aapt { |
| |
| ProductFilter::ResourceConfigValueIter |
| ProductFilter::selectProductToKeep(const ResourceNameRef& name, |
| const ResourceConfigValueIter begin, |
| const ResourceConfigValueIter end, |
| IDiagnostics* diag) { |
| ResourceConfigValueIter defaultProductIter = end; |
| ResourceConfigValueIter selectedProductIter = end; |
| |
| for (ResourceConfigValueIter iter = begin; iter != end; ++iter) { |
| ResourceConfigValue* configValue = iter->get(); |
| if (mProducts.find(configValue->product) != mProducts.end()) { |
| if (selectedProductIter != end) { |
| // We have two possible values for this product! |
| diag->error(DiagMessage(configValue->value->getSource()) |
| << "selection of product '" << configValue->product |
| << "' for resource " << name << " is ambiguous"); |
| |
| ResourceConfigValue* previouslySelectedConfigValue = selectedProductIter->get(); |
| diag->note(DiagMessage(previouslySelectedConfigValue->value->getSource()) |
| << "product '" << previouslySelectedConfigValue->product |
| << "' is also a candidate"); |
| return end; |
| } |
| |
| // Select this product. |
| selectedProductIter = iter; |
| } |
| |
| if (configValue->product.empty() || configValue->product == "default") { |
| if (defaultProductIter != end) { |
| // We have two possible default values. |
| diag->error(DiagMessage(configValue->value->getSource()) |
| << "multiple default products defined for resource " << name); |
| |
| ResourceConfigValue* previouslyDefaultConfigValue = defaultProductIter->get(); |
| diag->note(DiagMessage(previouslyDefaultConfigValue->value->getSource()) |
| << "default product also defined here"); |
| return end; |
| } |
| |
| // Mark the default. |
| defaultProductIter = iter; |
| } |
| } |
| |
| if (defaultProductIter == end) { |
| diag->error(DiagMessage() << "no default product defined for resource " << name); |
| return end; |
| } |
| |
| if (selectedProductIter == end) { |
| selectedProductIter = defaultProductIter; |
| } |
| return selectedProductIter; |
| } |
| |
| bool ProductFilter::consume(IAaptContext* context, ResourceTable* table) { |
| bool error = false; |
| for (auto& pkg : table->packages) { |
| for (auto& type : pkg->types) { |
| for (auto& entry : type->entries) { |
| std::vector<std::unique_ptr<ResourceConfigValue>> newValues; |
| |
| ResourceConfigValueIter iter = entry->values.begin(); |
| ResourceConfigValueIter startRangeIter = iter; |
| while (iter != entry->values.end()) { |
| ++iter; |
| if (iter == entry->values.end() || |
| (*iter)->config != (*startRangeIter)->config) { |
| |
| // End of the array, or we saw a different config, |
| // so this must be the end of a range of products. |
| // Select the product to keep from the set of products defined. |
| ResourceNameRef name(pkg->name, type->type, entry->name); |
| auto valueToKeep = selectProductToKeep(name, startRangeIter, iter, |
| context->getDiagnostics()); |
| if (valueToKeep == iter) { |
| // An error occurred, we could not pick a product. |
| error = true; |
| } else { |
| // We selected a product to keep. Move it to the new array. |
| newValues.push_back(std::move(*valueToKeep)); |
| } |
| |
| // Start the next range of products. |
| startRangeIter = iter; |
| } |
| } |
| |
| // Now move the new values in to place. |
| entry->values = std::move(newValues); |
| } |
| } |
| } |
| return !error; |
| } |
| |
| } // namespace aapt |