99598ee6ee
Test: bit incident_test:* GtsIncidentManagerTestCases:* Bug: 123543706 Change-Id: I9f671dd5d8b2ad139f952a23e575c2be16120459
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <cstdint>
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#include <string>
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#include <android/util/EncodedBuffer.h>
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namespace android {
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namespace util {
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/**
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* A ProtoReader on top of a file descriptor.
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*/
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class ProtoFileReader : public ProtoReader
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{
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public:
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/**
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* Read from this file descriptor.
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*/
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ProtoFileReader(int fd);
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/**
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* Does NOT close the file.
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*/
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virtual ~ProtoFileReader();
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// From ProtoReader.
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virtual ssize_t size() const;
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virtual size_t bytesRead() const;
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virtual uint8_t const* readBuffer();
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virtual size_t currentToRead();
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virtual bool hasNext();
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virtual uint8_t next();
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virtual uint64_t readRawVarint();
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virtual void move(size_t amt);
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status_t getError() const;
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private:
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int mFd; // File descriptor for input.
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status_t mStatus; // Any errors encountered during read.
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ssize_t mSize; // How much total data there is, or -1 if we can't tell.
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size_t mPos; // How much data has been read so far.
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size_t mOffset; // Offset in current buffer.
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size_t mMaxOffset; // How much data is left to read in mBuffer.
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const int mChunkSize; // Size of mBuffer.
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uint8_t mBuffer[32*1024];
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/**
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* If there is currently more data to read in the buffer, returns true.
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* If there is not more, then tries to read. If more data can be read,
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* it does so and returns true. If there is no more data, returns false.
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* Resets mOffset and mMaxOffset as necessary. Does not advance mOffset.
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*/
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bool ensure_data();
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};
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}
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}
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