a693c4a32e
FileOutputStream is safe to use on Windows, as it opens files using our compatibility API. Bug: 68262818 Test: make aapt2_tests Change-Id: Ib0b27e93edd609b49b1327db7d9867a002198ebb
108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
/*
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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_FILESTREAM_H
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#define AAPT_IO_FILESTREAM_H
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#include "io/Io.h"
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#include <memory>
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#include <string>
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#include "android-base/macros.h"
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#include "android-base/unique_fd.h"
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namespace aapt {
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namespace io {
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constexpr size_t kDefaultBufferCapacity = 4096u;
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class FileInputStream : public InputStream {
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public:
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explicit FileInputStream(const std::string& path,
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size_t buffer_capacity = kDefaultBufferCapacity);
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// Take ownership of `fd`.
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explicit FileInputStream(int fd, size_t buffer_capacity = kDefaultBufferCapacity);
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bool Next(const void** data, size_t* size) override;
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void BackUp(size_t count) override;
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size_t ByteCount() const override;
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bool HadError() const override;
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std::string GetError() const override;
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private:
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DISALLOW_COPY_AND_ASSIGN(FileInputStream);
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android::base::unique_fd fd_;
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std::string error_;
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std::unique_ptr<uint8_t[]> buffer_;
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size_t buffer_capacity_ = 0u;
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size_t buffer_offset_ = 0u;
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size_t buffer_size_ = 0u;
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size_t total_byte_count_ = 0u;
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};
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class FileOutputStream : public OutputStream {
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public:
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explicit FileOutputStream(const std::string& path,
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size_t buffer_capacity = kDefaultBufferCapacity);
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// Does not take ownership of `fd`.
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explicit FileOutputStream(int fd, size_t buffer_capacity = kDefaultBufferCapacity);
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// Takes ownership of `fd`.
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explicit FileOutputStream(android::base::unique_fd fd,
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size_t buffer_capacity = kDefaultBufferCapacity);
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~FileOutputStream();
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bool Next(void** data, size_t* size) override;
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// Immediately flushes out the contents of the buffer to disk.
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bool Flush();
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void BackUp(size_t count) override;
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size_t ByteCount() const override;
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bool HadError() const override;
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std::string GetError() const override;
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private:
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DISALLOW_COPY_AND_ASSIGN(FileOutputStream);
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bool FlushImpl();
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android::base::unique_fd owned_fd_;
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int fd_;
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std::string error_;
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std::unique_ptr<uint8_t[]> buffer_;
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size_t buffer_capacity_ = 0u;
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size_t buffer_offset_ = 0u;
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size_t total_byte_count_ = 0u;
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};
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} // namespace io
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} // namespace aapt
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#endif // AAPT_IO_FILESTREAM_H
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