src/leveldb/util/logging.h

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