1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "util/Maybe.h" 18 #include "util/Util.h" 19 #include "xml/XmlUtil.h" 20 21 #include <string> 22 23 namespace aapt { 24 namespace xml { 25 26 Maybe<ExtractedPackage> extractPackageFromNamespace(const std::u16string& namespaceUri) { 27 if (util::stringStartsWith<char16_t>(namespaceUri, kSchemaPublicPrefix)) { 28 StringPiece16 schemaPrefix = kSchemaPublicPrefix; 29 StringPiece16 package = namespaceUri; 30 package = package.substr(schemaPrefix.size(), package.size() - schemaPrefix.size()); 31 if (package.empty()) { 32 return {}; 33 } 34 return ExtractedPackage{ package.toString(), false /* isPrivate */ }; 35 36 } else if (util::stringStartsWith<char16_t>(namespaceUri, kSchemaPrivatePrefix)) { 37 StringPiece16 schemaPrefix = kSchemaPrivatePrefix; 38 StringPiece16 package = namespaceUri; 39 package = package.substr(schemaPrefix.size(), package.size() - schemaPrefix.size()); 40 if (package.empty()) { 41 return {}; 42 } 43 return ExtractedPackage{ package.toString(), true /* isPrivate */ }; 44 45 } else if (namespaceUri == kSchemaAuto) { 46 return ExtractedPackage{ std::u16string(), true /* isPrivate */ }; 47 } 48 return {}; 49 } 50 51 void transformReferenceFromNamespace(IPackageDeclStack* declStack, 52 const StringPiece16& localPackage, Reference* inRef) { 53 if (inRef->name) { 54 if (Maybe<ExtractedPackage> transformedPackage = 55 declStack->transformPackageAlias(inRef->name.value().package, localPackage)) { 56 ExtractedPackage& extractedPackage = transformedPackage.value(); 57 inRef->name.value().package = std::move(extractedPackage.package); 58 59 // If the reference was already private (with a * prefix) and the namespace is public, 60 // we keep the reference private. 61 inRef->privateReference |= extractedPackage.privateNamespace; 62 } 63 } 64 } 65 66 } // namespace xml 67 } // namespace aapt 68
