1a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski/* 2a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * Copyright (C) 2015 The Android Open Source Project 3a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * 4a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * Licensed under the Apache License, Version 2.0 (the "License"); 5a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * you may not use this file except in compliance with the License. 6a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * You may obtain a copy of the License at 7a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * 8a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * http://www.apache.org/licenses/LICENSE-2.0 9a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * 10a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * Unless required by applicable law or agreed to in writing, software 11a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * distributed under the License is distributed on an "AS IS" BASIS, 12a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * See the License for the specific language governing permissions and 14a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * limitations under the License. 15a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski */ 16a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 17a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski#ifndef AAPT_IO_DATA_H 18a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski#define AAPT_IO_DATA_H 19a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 20a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski#include <utils/FileMap.h> 21a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 22a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski#include <memory> 23a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 24a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskinamespace aapt { 25a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskinamespace io { 26a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 27a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski/** 28a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * Interface for a block of contiguous memory. An instance of this interface owns the data. 29a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski */ 30a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskiclass IData { 31a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskipublic: 32a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski virtual ~IData() = default; 33a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 34a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski virtual const void* data() const = 0; 35a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski virtual size_t size() const = 0; 36a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski}; 37a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 38a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski/** 39a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * Implementation of IData that exposes a memory mapped file. The mmapped file is owned by this 40a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * object. 41a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski */ 42a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskiclass MmappedData : public IData { 43a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskipublic: 44a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski explicit MmappedData(android::FileMap&& map) : mMap(std::forward<android::FileMap>(map)) { 45a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski } 46a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 47a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski const void* data() const override { 48a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski return mMap.getDataPtr(); 49a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski } 50a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 51a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski size_t size() const override { 52a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski return mMap.getDataLength(); 53a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski } 54a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 55a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskiprivate: 56a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski android::FileMap mMap; 57a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski}; 58a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 59a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski/** 60a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * Implementation of IData that exposes a block of memory that was malloc'ed (new'ed). The 61a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski * memory is owned by this object. 62a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski */ 63a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskiclass MallocData : public IData { 64a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskipublic: 65a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski MallocData(std::unique_ptr<const uint8_t[]> data, size_t size) : 66a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski mData(std::move(data)), mSize(size) { 67a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski } 68a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 69a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski const void* data() const override { 70a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski return mData.get(); 71a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski } 72a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 73a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski size_t size() const override { 74a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski return mSize; 75a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski } 76a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 77a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinskiprivate: 78a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski std::unique_ptr<const uint8_t[]> mData; 79a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski size_t mSize; 80a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski}; 81a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 8252364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski/** 8352364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski * When mmap fails because the file has length 0, we use the EmptyData to simulate data of length 0. 8452364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski */ 8552364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinskiclass EmptyData : public IData { 8652364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinskipublic: 8752364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski const void* data() const override { 8852364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski static const uint8_t d = 0; 8952364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski return &d; 9052364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski } 9152364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski 9252364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski size_t size() const override { 9352364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski return 0u; 9452364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski } 9552364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski}; 9652364f7ae31716d7827ea8f8566f4a28bd30a921Adam Lesinski 97a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski} // namespace io 98a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski} // namespace aapt 99a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski 100a40e972fdaa68fc486ff90a319195515819068b2Adam Lesinski#endif /* AAPT_IO_DATA_H */ 101