1 /* 2 * Copyright (C) 2013 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 "vector_output_stream.h" 18 19 #include <android-base/logging.h> 20 21 namespace art { 22 namespace linker { 23 24 VectorOutputStream::VectorOutputStream(const std::string& location, std::vector<uint8_t>* vector) 25 : OutputStream(location), offset_(vector->size()), vector_(vector) {} 26 27 off_t VectorOutputStream::Seek(off_t offset, Whence whence) { 28 CHECK(whence == kSeekSet || whence == kSeekCurrent || whence == kSeekEnd) << whence; 29 off_t new_offset = 0; 30 switch (whence) { 31 case kSeekSet: { 32 new_offset = offset; 33 break; 34 } 35 case kSeekCurrent: { 36 new_offset = offset_ + offset; 37 break; 38 } 39 case kSeekEnd: { 40 new_offset = vector_->size() + offset; 41 break; 42 } 43 } 44 EnsureCapacity(new_offset); 45 offset_ = new_offset; 46 return offset_; 47 } 48 49 } // namespace linker 50 } // namespace art 51
