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147 lines
4.3 KiB
147 lines
4.3 KiB
/*
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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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#ifndef AAPT_IO_UTIL_H
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#define AAPT_IO_UTIL_H
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#include <string>
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#include "google/protobuf/message.h"
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#include "google/protobuf/io/coded_stream.h"
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#include "format/Archive.h"
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#include "io/File.h"
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#include "io/Io.h"
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#include "process/IResourceTableConsumer.h"
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namespace aapt {
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namespace io {
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bool CopyInputStreamToArchive(IAaptContext* context, InputStream* in, const std::string& out_path,
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uint32_t compression_flags, IArchiveWriter* writer);
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bool CopyFileToArchive(IAaptContext* context, IFile* file, const std::string& out_path,
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uint32_t compression_flags, IArchiveWriter* writer);
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bool CopyFileToArchivePreserveCompression(IAaptContext* context, IFile* file,
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const std::string& out_path, IArchiveWriter* writer);
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bool CopyProtoToArchive(IAaptContext* context, ::google::protobuf::Message* proto_msg,
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const std::string& out_path, uint32_t compression_flags,
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IArchiveWriter* writer);
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// Copies the data from in to out. Returns false if there was an error.
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// If there was an error, check the individual streams' HadError/GetError methods.
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bool Copy(OutputStream* out, InputStream* in);
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bool Copy(OutputStream* out, const ::android::StringPiece& in);
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bool Copy(::google::protobuf::io::ZeroCopyOutputStream* out, InputStream* in);
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class OutputStreamAdaptor : public io::OutputStream {
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public:
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explicit OutputStreamAdaptor(::google::protobuf::io::ZeroCopyOutputStream* out) : out_(out) {
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}
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bool Next(void** data, size_t* size) override {
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int out_size;
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bool result = out_->Next(data, &out_size);
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*size = static_cast<size_t>(out_size);
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if (!result) {
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error_ocurred_ = true;
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}
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return result;
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}
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void BackUp(size_t count) override {
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out_->BackUp(static_cast<int>(count));
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}
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size_t ByteCount() const override {
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return static_cast<size_t>(out_->ByteCount());
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}
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bool HadError() const override {
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return error_ocurred_;
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(OutputStreamAdaptor);
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::google::protobuf::io::ZeroCopyOutputStream* out_;
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bool error_ocurred_ = false;
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};
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class ZeroCopyInputAdaptor : public ::google::protobuf::io::ZeroCopyInputStream {
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public:
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explicit ZeroCopyInputAdaptor(io::InputStream* in) : in_(in) {
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}
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bool Next(const void** data, int* size) override {
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size_t out_size;
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bool result = in_->Next(data, &out_size);
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*size = static_cast<int>(out_size);
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return result;
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}
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void BackUp(int count) override {
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in_->BackUp(static_cast<size_t>(count));
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}
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bool Skip(int count) override {
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const void* data;
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int size;
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while (Next(&data, &size)) {
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if (size > count) {
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BackUp(size - count);
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return true;
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} else {
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count -= size;
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}
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}
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return false;
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}
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::google::protobuf::int64 ByteCount() const override {
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return static_cast<::google::protobuf::int64>(in_->ByteCount());
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}
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private:
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DISALLOW_COPY_AND_ASSIGN(ZeroCopyInputAdaptor);
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io::InputStream* in_;
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};
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class ProtoInputStreamReader {
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public:
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explicit ProtoInputStreamReader(io::InputStream* in) : in_(in) { }
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/** Deserializes a Message proto from the current position in the input stream.*/
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template <typename T> bool ReadMessage(T *message) {
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ZeroCopyInputAdaptor adapter(in_);
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google::protobuf::io::CodedInputStream coded_stream(&adapter);
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coded_stream.SetTotalBytesLimit(std::numeric_limits<int32_t>::max(),
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coded_stream.BytesUntilTotalBytesLimit());
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return message->ParseFromCodedStream(&coded_stream);
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}
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private:
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io::InputStream* in_;
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};
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} // namespace io
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} // namespace aapt
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#endif /* AAPT_IO_UTIL_H */
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