// Copyright 2015 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CHROMIUMOS_WIDE_PROFILING_FILE_READER_H_
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#define CHROMIUMOS_WIDE_PROFILING_FILE_READER_H_
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#include <stdio.h>
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#include "data_reader.h"
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namespace quipper {
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// Read from an input file. Must be a normal file. Does not support pipe inputs.
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class FileReader : public DataReader {
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public:
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explicit FileReader(const string& filename);
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virtual ~FileReader();
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bool IsOpen() const { return infile_; }
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void SeekSet(size_t offset) override { fseek(infile_, offset, SEEK_SET); }
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size_t Tell() const override { return ftell(infile_); }
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bool ReadData(const size_t size, void* dest) override;
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// If there is a failure reading the data from file, |*str| will not be
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// modified.
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bool ReadString(const size_t size, string* str) override;
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private:
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// File input handle.
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FILE* infile_;
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};
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} // namespace quipper
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#endif // CHROMIUMOS_WIDE_PROFILING_FILE_READER_H_
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