mirror of
https://github.com/matrix-construct/construct
synced 2024-12-30 17:34:04 +01:00
110 lines
3.1 KiB
C++
110 lines
3.1 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_BASE_H
|
|
|
|
namespace ircd
|
|
{
|
|
// Binary -> Base58 encode suite
|
|
constexpr size_t b58encode_size(const size_t &);
|
|
size_t b58encode_size(const const_buffer &in);
|
|
string_view b58encode(const mutable_buffer &out, const const_buffer &in);
|
|
std::string b58encode(const const_buffer &in);
|
|
|
|
// Base58 -> Binary decode suite
|
|
constexpr size_t b58decode_size(const size_t &);
|
|
size_t b58decode_size(const string_view &in);
|
|
const_buffer b58decode(const mutable_buffer &out, const string_view &in);
|
|
std::string b58decode(const string_view &in);
|
|
|
|
// Binary -> Base64 conversion suite
|
|
constexpr size_t b64encode_size(const size_t &);
|
|
size_t b64encode_size(const const_buffer &in);
|
|
string_view b64encode(const mutable_buffer &out, const const_buffer &in);
|
|
std::string b64encode(const const_buffer &in);
|
|
|
|
// Binary -> Base64 conversion without padding
|
|
constexpr size_t b64encode_unpadded_size(const size_t &);
|
|
size_t b64encode_unpadded_size(const const_buffer &in);
|
|
string_view b64encode_unpadded(const mutable_buffer &out, const const_buffer &in);
|
|
std::string b64encode_unpadded(const const_buffer &in);
|
|
|
|
// Base64 -> Binary conversion (padded or unpadded)
|
|
constexpr size_t b64decode_size(const size_t &);
|
|
size_t b64decode_size(const string_view &in);
|
|
const_buffer b64decode(const mutable_buffer &out, const string_view &in);
|
|
std::string b64decode(const string_view &in);
|
|
|
|
// Base64 <-> Base58 convenience conversions
|
|
string_view b64tob58(const mutable_buffer &out, const string_view &in);
|
|
string_view b58tob64(const mutable_buffer &out, const string_view &in);
|
|
string_view b58tob64_unpadded(const mutable_buffer &out, const string_view &in);
|
|
}
|
|
|
|
inline size_t
|
|
ircd::b64decode_size(const string_view &in)
|
|
{
|
|
return b64decode_size(size(in));
|
|
}
|
|
|
|
constexpr size_t
|
|
ircd::b64decode_size(const size_t &in)
|
|
{
|
|
return ceil(in * 0.75);
|
|
}
|
|
|
|
inline size_t
|
|
ircd::b64encode_unpadded_size(const const_buffer &in)
|
|
{
|
|
return b64encode_unpadded_size(size(in));
|
|
}
|
|
|
|
constexpr size_t
|
|
ircd::b64encode_unpadded_size(const size_t &in)
|
|
{
|
|
return ceil(in * (4.0 / 3.0));
|
|
}
|
|
|
|
inline size_t
|
|
ircd::b64encode_size(const const_buffer &in)
|
|
{
|
|
return b64encode_size(size(in));
|
|
}
|
|
|
|
constexpr size_t
|
|
ircd::b64encode_size(const size_t &in)
|
|
{
|
|
return ceil(in * (4.0 / 3.0)) + (3 - in % 3) % 3;
|
|
}
|
|
|
|
inline size_t
|
|
ircd::b58decode_size(const string_view &in)
|
|
{
|
|
return b58decode_size(size(in));
|
|
}
|
|
|
|
constexpr size_t
|
|
ircd::b58decode_size(const size_t &in)
|
|
{
|
|
return in * 733UL / 1000UL + 1UL; // log(58) / log(256), rounded up
|
|
}
|
|
|
|
inline size_t
|
|
ircd::b58encode_size(const const_buffer &in)
|
|
{
|
|
return b58encode_size(size(in));
|
|
}
|
|
|
|
constexpr size_t
|
|
ircd::b58encode_size(const size_t &in)
|
|
{
|
|
return in * 138UL / 100UL + 1UL; // log(256) / log(58), rounded up
|
|
}
|