ceph/src/common/strescape.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2021 Red Hat, Inc.
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  *
  13  */
  14
  15 #ifndef CEPH_STRESCAPE_H
  16 #define CEPH_STRESCAPE_H
  17
  18 #include <ostream>
  19 #include <string_view>
  20
  21 #include <ctype.h>
  22
  23 inline std::string binstrprint(std::string_view sv, size_t maxlen=0)
  24 {
  25   std::string s;
  26   if (maxlen == 0 || sv.size() < maxlen) {
  27     s = std::string(sv);
  28   } else {
  29     maxlen = std::max<size_t>(8, maxlen);
  30     s = std::string(sv.substr(0, maxlen-3))+"..."s;
  31   }
  32   std::replace_if(s.begin(), s.end(), [](char c){ return !(isalnum(c) || ispunct(c)); }, '.');
  33   return s;
  34 }
  35
  36 #endif