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