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 AAPT_IO_BIGBUFFERSTREAM_H 18 #define AAPT_IO_BIGBUFFERSTREAM_H 19 20 #include "io/Io.h" 21 #include "util/BigBuffer.h" 22 23 namespace aapt { 24 namespace io { 25 26 class BigBufferInputStream : public KnownSizeInputStream { 27 public: BigBufferInputStream(const BigBuffer * buffer)28 inline explicit BigBufferInputStream(const BigBuffer* buffer) 29 : buffer_(buffer), iter_(buffer->begin()) { 30 } 31 virtual ~BigBufferInputStream() = default; 32 33 bool Next(const void** data, size_t* size) override; 34 35 void BackUp(size_t count) override; 36 37 bool CanRewind() const override; 38 39 bool Rewind() override; 40 41 size_t ByteCount() const override; 42 43 bool HadError() const override; 44 45 size_t TotalSize() const override; 46 47 private: 48 DISALLOW_COPY_AND_ASSIGN(BigBufferInputStream); 49 50 const BigBuffer* buffer_; 51 BigBuffer::const_iterator iter_; 52 size_t offset_ = 0; 53 size_t bytes_read_ = 0; 54 }; 55 56 class BigBufferOutputStream : public OutputStream { 57 public: BigBufferOutputStream(BigBuffer * buffer)58 inline explicit BigBufferOutputStream(BigBuffer* buffer) : buffer_(buffer) { 59 } 60 virtual ~BigBufferOutputStream() = default; 61 62 bool Next(void** data, size_t* size) override; 63 64 void BackUp(size_t count) override; 65 66 size_t ByteCount() const override; 67 68 bool HadError() const override; 69 70 private: 71 DISALLOW_COPY_AND_ASSIGN(BigBufferOutputStream); 72 73 BigBuffer* buffer_; 74 }; 75 76 } // namespace io 77 } // namespace aapt 78 79 #endif // AAPT_IO_BIGBUFFERSTREAM_H 80