87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
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/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "io/BigBufferInputStream.h"
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#include "io/BigBufferOutputStream.h"
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namespace aapt {
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namespace io {
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//
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// BigBufferInputStream
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//
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bool BigBufferInputStream::Next(const void** data, size_t* size) {
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if (iter_ == buffer_->end()) {
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return false;
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}
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if (offset_ == iter_->size) {
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++iter_;
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if (iter_ == buffer_->end()) {
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return false;
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}
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offset_ = 0;
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}
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*data = iter_->buffer.get() + offset_;
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*size = iter_->size - offset_;
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bytes_read_ += iter_->size - offset_;
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offset_ = iter_->size;
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return true;
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}
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void BigBufferInputStream::BackUp(size_t count) {
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if (count > offset_) {
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bytes_read_ -= offset_;
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offset_ = 0;
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} else {
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offset_ -= count;
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bytes_read_ -= count;
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}
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}
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bool BigBufferInputStream::CanRewind() const { return true; }
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bool BigBufferInputStream::Rewind() {
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iter_ = buffer_->begin();
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offset_ = 0;
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bytes_read_ = 0;
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return true;
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}
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size_t BigBufferInputStream::ByteCount() const { return bytes_read_; }
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bool BigBufferInputStream::HadError() const { return false; }
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//
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// BigBufferOutputStream
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//
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bool BigBufferOutputStream::Next(void** data, size_t* size) {
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*data = buffer_->NextBlock(size);
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return true;
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}
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void BigBufferOutputStream::BackUp(size_t count) { buffer_->BackUp(count); }
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size_t BigBufferOutputStream::ByteCount() const { return buffer_->size(); }
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bool BigBufferOutputStream::HadError() const { return false; }
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} // namespace io
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} // namespace aapt
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