1// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file. See the AUTHORS file for names of contributors.
4//
5// Must not be included from any .h files to avoid polluting the namespace
6// with macros.
7
8#ifndef STORAGE_LEVELDB_UTIL_LOGGING_H_
9#define STORAGE_LEVELDB_UTIL_LOGGING_H_
10
11#include <cstdint>
12#include <cstdio>
13#include <string>
14
15#include "port/port.h"
16
17namespace leveldb {
18
19class Slice;
20class WritableFile;
21
22// Append a human-readable printout of "num" to *str
23void AppendNumberTo(std::string* str, uint64_t num);
24
25// Append a human-readable printout of "value" to *str.
26// Escapes any non-printable characters found in "value".
27void AppendEscapedStringTo(std::string* str, const Slice& value);
28
29// Return a human-readable printout of "num"
30std::string NumberToString(uint64_t num);
31
32// Return a human-readable version of "value".
33// Escapes any non-printable characters found in "value".
34std::string EscapeString(const Slice& value);
35
36// Parse a human-readable number from "*in" into *value. On success,
37// advances "*in" past the consumed number and sets "*val" to the
38// numeric value. Otherwise, returns false and leaves *in in an
39// unspecified state.
40bool ConsumeDecimalNumber(Slice* in, uint64_t* val);
41
42} // namespace leveldb
43
44#endif // STORAGE_LEVELDB_UTIL_LOGGING_H_
45