17cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines/* 27cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * Copyright 2012, The Android Open Source Project 37cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * 47cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * Licensed under the Apache License, Version 2.0 (the "License"); 57cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * you may not use this file except in compliance with the License. 67cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * You may obtain a copy of the License at 77cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * 87cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * http://www.apache.org/licenses/LICENSE-2.0 97cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * 107cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * Unless required by applicable law or agreed to in writing, software 117cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * distributed under the License is distributed on an "AS IS" BASIS, 127cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 137cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * See the License for the specific language governing permissions and 147cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines * limitations under the License. 157cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines */ 167cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines 177cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines#include <sys/stat.h> 187cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines#include <stdlib.h> 197cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines 207cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines#include "bcinfo/Wrap/file_wrapper_input.h" 217cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines 227cd4c49d575478b2380f129dcd376a4e5e37939cStephen HinesFileWrapperInput::FileWrapperInput(const char* name) : 237cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines _name(name), _at_eof(false), _size_found(false), _size(0) { 247cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines _file = fopen(name, "rb"); 257cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines if (NULL == _file) { 267cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines fprintf(stderr, "Unable to open: %s\n", name); 277cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines exit(1); 287cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines } 297cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines} 307cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines 317cd4c49d575478b2380f129dcd376a4e5e37939cStephen HinesFileWrapperInput::~FileWrapperInput() { 327cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines fclose(_file); 337cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines} 347cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines 357cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hinessize_t FileWrapperInput::Read(uint8_t* buffer, size_t wanted) { 367cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines size_t found = fread((char*) buffer, 1, wanted, _file); 377cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines if (feof(_file) || ferror(_file)) { 387cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines _at_eof = true; 397cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines } 407cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines return found; 417cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines} 427cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines 437cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hinesbool FileWrapperInput::AtEof() { 447cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines return _at_eof; 457cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines} 467cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines 477cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hinesoff_t FileWrapperInput::Size() { 487cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines if (_size_found) return _size; 497cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines struct stat st; 507cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines if (0 == stat(_name, &st)) { 517cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines _size_found = true; 527cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines _size = st.st_size; 537cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines return _size; 547cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines } else { 557cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines fprintf(stderr, "Unable to compute file size: %s\n", _name); 567cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines exit(1); 577cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines } 587cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines // NOT REACHABLE. 597cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines return 0; 607cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines} 617cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines 627cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hinesbool FileWrapperInput::Seek(uint32_t pos) { 637cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines return 0 == fseek(_file, (long) pos, SEEK_SET); 647cd4c49d575478b2380f129dcd376a4e5e37939cStephen Hines} 65