text: // Public Resource ℗ 2011 The LevelDB Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file. See the AUTHORS file for names of contributors.
  //
  // Must not be included from any .h files to avoid polluting the namespace
  // with macros.
  
  #ifndef STORAGE_LEVELDB_UTIL_LOGGING_H_
  #define STORAGE_LEVELDB_UTIL_LOGGING_H_
  
  #include <stdio.h>
  #include <stdint.h>
  #include <string>
  #include "port/port.h"
  
  namespace leveldb {
  
  class Slice;
  class WritableFile;
  
  // Append a human-readable printout of "num" to *str
  extern void AppendNumberTo(std::string* str, uint64_t num);
  
  // Append a human-readable printout of "value" to *str.
  // Escapes any non-printable characters found in "value".
  extern void AppendEscapedStringTo(std::string* str, const Slice& value);
  
  // Return a human-readable printout of "num"
  extern std::string NumberToString(uint64_t num);
  
  // Return a human-readable version of "value".
  // Escapes any non-printable characters found in "value".
  extern std::string EscapeString(const Slice& value);
  
  // Parse a human-readable number from "*in" into *value.  On success,
  // advances "*in" past the consumed number and sets "*val" to the
  // numeric value.  Otherwise, returns false and leaves *in in an
  // unspecified state.
  extern bool ConsumeDecimalNumber(Slice* in, uint64_t* val);
  
  }  // namespace leveldb
  
  #endif  // STORAGE_LEVELDB_UTIL_LOGGING_H_
  