/*
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* Copyright (C) 2013 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 ART_LIBELFFILE_STREAM_OUTPUT_STREAM_H_
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#define ART_LIBELFFILE_STREAM_OUTPUT_STREAM_H_
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#include <ostream>
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#include <string>
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#include "base/macros.h"
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namespace art {
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enum Whence {
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kSeekSet = SEEK_SET,
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kSeekCurrent = SEEK_CUR,
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kSeekEnd = SEEK_END,
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};
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std::ostream& operator<<(std::ostream& os, const Whence& rhs);
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class OutputStream {
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public:
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explicit OutputStream(const std::string& location) : location_(location) {}
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virtual ~OutputStream() {}
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const std::string& GetLocation() const {
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return location_;
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}
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virtual bool WriteFully(const void* buffer, size_t byte_count) = 0;
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virtual off_t Seek(off_t offset, Whence whence) = 0;
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/*
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* Flushes the stream. Returns whether the operation was successful.
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*
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* An OutputStream may delay reporting errors from WriteFully() or
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* Seek(). In that case, Flush() shall report any pending error.
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*/
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virtual bool Flush() = 0;
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private:
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const std::string location_;
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DISALLOW_COPY_AND_ASSIGN(OutputStream);
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};
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} // namespace art
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#endif // ART_LIBELFFILE_STREAM_OUTPUT_STREAM_H_
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