1 /* 2 * Copyright (C) 2017 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 "io/StringInputStream.h" 18 19 using ::android::StringPiece; 20 21 namespace aapt { 22 namespace io { 23 24 StringInputStream::StringInputStream(const StringPiece& str) : str_(str), offset_(0u) { 25 } 26 27 bool StringInputStream::Next(const void** data, size_t* size) { 28 if (offset_ == str_.size()) { 29 return false; 30 } 31 32 *data = str_.data() + offset_; 33 *size = str_.size() - offset_; 34 offset_ = str_.size(); 35 return true; 36 } 37 38 void StringInputStream::BackUp(size_t count) { 39 if (count > offset_) { 40 count = offset_; 41 } 42 offset_ -= count; 43 } 44 45 size_t StringInputStream::ByteCount() const { 46 return offset_; 47 } 48 49 } // namespace io 50 } // namespace aapt 51
