b931f84e56
Summary: file_reader_writer.h and .cc contain several files and helper function, and it's hard to navigate. Separate it to multiple files and put them under file/ Pull Request resolved: https://github.com/facebook/rocksdb/pull/5803 Test Plan: Build whole project using make and cmake. Differential Revision: D17374550 fbshipit-source-id: 10efca907721e7a78ed25bbf74dc5410dea05987
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// Copyright (c) 2011 The LevelDB 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. See the AUTHORS file for names of contributors.
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#include "file/read_write_util.h"
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#include <sstream>
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#include "test_util/sync_point.h"
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namespace rocksdb {
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Status NewWritableFile(Env* env, const std::string& fname,
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std::unique_ptr<WritableFile>* result,
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const EnvOptions& options) {
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Status s = env->NewWritableFile(fname, result, options);
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TEST_KILL_RANDOM("NewWritableFile:0", rocksdb_kill_odds * REDUCE_ODDS2);
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return s;
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}
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bool ReadOneLine(std::istringstream* iss, SequentialFile* seq_file,
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std::string* output, bool* has_data, Status* result) {
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const int kBufferSize = 8192;
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char buffer[kBufferSize + 1];
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Slice input_slice;
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std::string line;
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bool has_complete_line = false;
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while (!has_complete_line) {
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if (std::getline(*iss, line)) {
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has_complete_line = !iss->eof();
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} else {
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has_complete_line = false;
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}
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if (!has_complete_line) {
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// if we're not sure whether we have a complete line,
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// further read from the file.
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if (*has_data) {
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*result = seq_file->Read(kBufferSize, &input_slice, buffer);
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}
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if (input_slice.size() == 0) {
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// meaning we have read all the data
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*has_data = false;
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break;
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} else {
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iss->str(line + input_slice.ToString());
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// reset the internal state of iss so that we can keep reading it.
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iss->clear();
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*has_data = (input_slice.size() == kBufferSize);
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continue;
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}
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}
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}
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*output = line;
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return *has_data || has_complete_line;
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}
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} // namespace rocksdb
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