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construct/include/ircd/util/pretty.h

65 lines
2.3 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_UTIL_PRETTY_H
namespace ircd {
inline namespace util
{
// Human readable space suite
using human_readable_size = std::tuple<uint64_t, long double, const string_view &>;
// Default format strings used for pretty(size).
extern const string_view pretty_fmt[];
// Process the value to be made pretty first with one of the following:
human_readable_size iec(const uint64_t &value);
human_readable_size si(const uint64_t &value);
// Generate a pretty string with a custom fmt string (low-level)
string_view pretty(const mutable_buffer &out, const string_view &fmt, const human_readable_size &);
std::string pretty(const human_readable_size &, const string_view &fmt);
// Generate a pretty string with the pretty_fmt_default implied.
string_view pretty(const mutable_buffer &out, const human_readable_size &, const uint &fmt = 0);
std::string pretty(const human_readable_size &, const uint &fmt = 0);
// Human readable time suite (for timers and counts; otherwise see date.h)
string_view pretty_nanoseconds(const mutable_buffer &out, const long double &, const uint &fmt = 0);
template<class r, class p> string_view pretty(const mutable_buffer &out, const duration<r, p> &, const uint &fmt = 0);
template<class r, class p> std::string pretty(const duration<r, p> &, const uint &fmt = 0);
}}
template<class rep,
class period>
std::string
ircd::util::pretty(const duration<rep, period> &d,
const uint &fmt)
{
return util::string(32, [&d, &fmt]
(const mutable_buffer &out)
{
return pretty(out, d, fmt);
});
}
template<class rep,
class period>
ircd::string_view
ircd::util::pretty(const mutable_buffer &out,
const duration<rep, period> &d,
const uint &fmt)
{
using nanoseconds_ld = duration<long double, nanoseconds::period>;
const auto &ns(duration_cast<nanoseconds_ld>(d));
return pretty_nanoseconds(out, ns.count(), fmt);
}