1 /* 2 * Copyright 2019 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 #ifndef _IO_STREAM_FILEINPUTSTREAM_H_ 17 #define _IO_STREAM_FILEINPUTSTREAM_H_ 18 19 #include "InputStream.h" 20 21 namespace parselib { 22 23 /** 24 * A concrete implementation of InputStream for a file data source 25 */ 26 class FileInputStream : public InputStream { 27 public: 28 /** constructor. Caller is presumed to have opened the file with (at least) read permission */ FileInputStream(int fh)29 FileInputStream(int fh) : mFH(fh) {} ~FileInputStream()30 virtual ~FileInputStream() {} 31 32 virtual int32_t read(void *buff, int32_t numBytes); 33 34 virtual int32_t peek(void *buff, int32_t numBytes); 35 36 virtual void advance(int32_t numBytes); 37 38 virtual int32_t getPos(); 39 40 virtual void setPos(int32_t pos); 41 42 private: 43 /** File handle of the data file to read from */ 44 int mFH; 45 }; 46 47 } // namespace parselib 48 49 #endif // _IO_STREAM_FILEINPUTSTREAM_H_ 50