1 /* 2 * Copyright 2012, 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 #include <sys/stat.h> 18 #include <stdlib.h> 19 20 #include "bcinfo/Wrap/in_memory_wrapper_input.h" 21 22 InMemoryWrapperInput::InMemoryWrapperInput(const char* buffer, size_t size) : 23 _buffer(buffer), _pos(0), _size(size) { 24 } 25 26 InMemoryWrapperInput::~InMemoryWrapperInput() { 27 } 28 29 size_t InMemoryWrapperInput::Read(uint8_t* buffer, size_t wanted) { 30 size_t found = 0; 31 32 if (!buffer) { 33 return 0; 34 } 35 36 while (found < wanted) { 37 if (_pos >= _size) { 38 return found; 39 } 40 buffer[found++] = _buffer[_pos++]; 41 } 42 return found; 43 } 44 45 bool InMemoryWrapperInput::AtEof() { 46 return (_pos >= _size); 47 } 48 49 off_t InMemoryWrapperInput::Size() { 50 return _size; 51 } 52 53 bool InMemoryWrapperInput::Seek(uint32_t pos) { 54 if (pos < _size) { 55 _pos = pos; 56 return true; 57 } else { 58 return false; 59 } 60 } 61
