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 <stdint.h>
12 #include <stdio.h>
13 14 #include <string>
15 16 #include "port/port.h"
17 18 namespace leveldb {
19 20 class Slice;
21 class WritableFile;
22 23 // Append a human-readable printout of "num" to *str
24 void AppendNumberTo(std::string* str, uint64_t num);
25 26 // Append a human-readable printout of "value" to *str.
27 // Escapes any non-printable characters found in "value".
28 void AppendEscapedStringTo(std::string* str, const Slice& value);
29 30 // Return a human-readable printout of "num"
31 std::string NumberToString(uint64_t num);
32 33 // Return a human-readable version of "value".
34 // Escapes any non-printable characters found in "value".
35 std::string EscapeString(const Slice& value);
36 37 // Parse a human-readable number from "*in" into *value. On success,
38 // advances "*in" past the consumed number and sets "*val" to the
39 // numeric value. Otherwise, returns false and leaves *in in an
40 // unspecified state.
41 bool ConsumeDecimalNumber(Slice* in, uint64_t* val);
42 43 } // namespace leveldb
44 45 #endif // STORAGE_LEVELDB_UTIL_LOGGING_H_
46