88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/*
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* Copyright (C) 2015 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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#ifndef AAPT_FORMAT_BINARY_CHUNKWRITER_H
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#define AAPT_FORMAT_BINARY_CHUNKWRITER_H
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#include "android-base/macros.h"
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#include "androidfw/ResourceTypes.h"
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#include "util/BigBuffer.h"
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#include "util/Util.h"
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namespace aapt {
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class ChunkWriter {
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public:
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explicit inline ChunkWriter(BigBuffer* buffer) : buffer_(buffer) {
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}
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ChunkWriter(ChunkWriter&&) = default;
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ChunkWriter& operator=(ChunkWriter&&) = default;
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template <typename T>
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inline T* StartChunk(uint16_t type) {
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start_size_ = buffer_->size();
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T* chunk = buffer_->NextBlock<T>();
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header_ = &chunk->header;
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header_->type = util::HostToDevice16(type);
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header_->headerSize = util::HostToDevice16(sizeof(T));
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return chunk;
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}
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template <typename T>
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inline T* NextBlock(size_t count = 1) {
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return buffer_->NextBlock<T>(count);
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}
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inline BigBuffer* buffer() {
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return buffer_;
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}
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inline android::ResChunk_header* chunk_header() {
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return header_;
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}
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inline size_t size() {
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return buffer_->size() - start_size_;
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}
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inline android::ResChunk_header* Finish() {
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buffer_->Align4();
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header_->size = util::HostToDevice32(buffer_->size() - start_size_);
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return header_;
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(ChunkWriter);
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BigBuffer* buffer_;
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size_t start_size_ = 0;
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android::ResChunk_header* header_ = nullptr;
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};
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template <>
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inline android::ResChunk_header* ChunkWriter::StartChunk(uint16_t type) {
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start_size_ = buffer_->size();
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header_ = buffer_->NextBlock<android::ResChunk_header>();
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header_->type = util::HostToDevice16(type);
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header_->headerSize = util::HostToDevice16(sizeof(android::ResChunk_header));
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return header_;
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}
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} // namespace aapt
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#endif /* AAPT_FORMAT_BINARY_CHUNKWRITER_H */
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