1 /* 2 * Copyright (C) 2017 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 #ifndef ANDROIDFW_RESOURCEUTILS_H 18 #define ANDROIDFW_RESOURCEUTILS_H 19 20 #include "androidfw/StringPiece.h" 21 22 namespace android { 23 24 // Extracts the package, type, and name from a string of the format: [[package:]type/]name 25 // Validation must be performed on each extracted piece. 26 // Returns false if there was a syntax error. 27 bool ExtractResourceName(const StringPiece& str, StringPiece* out_package, StringPiece* out_type, 28 StringPiece* out_entry); 29 30 inline uint32_t fix_package_id(uint32_t resid, uint8_t package_id) { 31 return resid | (static_cast<uint32_t>(package_id) << 24); 32 } 33 34 inline uint8_t get_package_id(uint32_t resid) { 35 return static_cast<uint8_t>((resid >> 24) & 0x000000ffu); 36 } 37 38 // The type ID is 1-based, so if the returned value is 0 it is invalid. 39 inline uint8_t get_type_id(uint32_t resid) { 40 return static_cast<uint8_t>((resid >> 16) & 0x000000ffu); 41 } 42 43 inline uint16_t get_entry_id(uint32_t resid) { return static_cast<uint16_t>(resid & 0x0000ffffu); } 44 45 inline bool is_internal_resid(uint32_t resid) { 46 return (resid & 0xffff0000u) != 0 && (resid & 0x00ff0000u) == 0; 47 } 48 49 inline bool is_valid_resid(uint32_t resid) { 50 return (resid & 0x00ff0000u) != 0 && (resid & 0xff000000u) != 0; 51 } 52 53 inline uint32_t make_resid(uint8_t package_id, uint8_t type_id, uint16_t entry_id) { 54 return (static_cast<uint32_t>(package_id) << 24) | (static_cast<uint32_t>(type_id) << 16) | 55 entry_id; 56 } 57 58 } // namespace android 59 60 #endif /* ANDROIDFW_RESOURCEUTILS_H */ 61
