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https://github.com/oxen-io/oxen-core.git
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1dd98f3dae
Converts all use of boost::filesystem to std::filesystem. For macos and potentially other exotic systems where std::filesystem isn't available, we use ghc::filesystem instead (which is a drop-in replacement for std::filesystem, unlike boost::filesystem). This also greatly changes how we handle filenames internally by holding them in filesystem::path objects as soon as possible (using fs::u8path()), rather than strings, which avoids a ton of issues around unicode filenames. As a result this lets us drop the boost::locale dependency on Windows along with a bunch of messy Windows ifdef code, and avoids the need for doing gross boost locale codecvt calls.
140 lines
5.5 KiB
C++
140 lines
5.5 KiB
C++
// Copyright (c) 2014-2019, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#pragma once
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#include <boost/endian/conversion.hpp>
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#include <optional>
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#include <memory>
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#include <string>
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#include <chrono>
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#include "crypto/hash.h"
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#include "cryptonote_config.h"
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/*! \brief Dumping ground for random functions. Please think long and hard before you add anything
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* here.
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*
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*
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*
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*/
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namespace tools
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{
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bool disable_core_dumps();
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bool on_startup();
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ssize_t get_lockable_memory();
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void set_max_concurrency(unsigned n);
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unsigned get_max_concurrency();
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bool is_local_address(const std::string &address);
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int vercmp(std::string_view v0, std::string_view v1); // returns < 0, 0, > 0, similar to strcmp, but more human friendly than lexical - does not attempt to validate
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std::optional<std::pair<uint32_t, uint32_t>> parse_subaddress_lookahead(const std::string& str);
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#ifdef _WIN32
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std::string input_line_win();
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#endif
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std::string get_human_readable_timestamp(uint64_t ts);
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std::string get_human_readable_timespan(std::chrono::seconds seconds);
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std::string get_human_readable_bytes(uint64_t bytes);
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template <typename Duration, std::enable_if_t<!std::is_same_v<Duration, std::chrono::seconds>, int> = 0>
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std::string get_human_readable_timespan(Duration d)
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{
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return get_human_readable_timespan(std::chrono::duration_cast<std::chrono::seconds>(d));
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}
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template <typename Duration>
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constexpr uint64_t to_seconds(Duration d)
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{
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return std::chrono::duration_cast<std::chrono::seconds>(d).count();
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}
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namespace detail {
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// Copy an integer type, swapping to little-endian if needed
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template <typename T, std::enable_if_t<std::is_integral<T>::value, int> = 0>
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void memcpy_one(char*& dest, T t) {
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boost::endian::native_to_little_inplace(t);
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std::memcpy(dest, &t, sizeof(T));
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dest += sizeof(T);
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}
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// Copy a class byte-for-byte (but only if it is standard layout and has byte alignment)
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template <typename T, std::enable_if_t<std::is_class<T>::value, int> = 0>
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void memcpy_one(char*& dest, const T& t) {
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// We don't *actually* require byte alignment here but it's quite possibly an error (i.e.
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// passing in a type containing integer members) so disallow it.
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static_assert(std::is_trivially_copyable<T>::value && alignof(T) == 1, "memcpy_le() may only be used on simple (1-byte alignment) struct types");
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std::memcpy(dest, &t, sizeof(T));
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dest += sizeof(T);
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}
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// Copy a string literal
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template <typename T, size_t N>
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void memcpy_one(char*& dest, const T (&arr)[N]) {
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for (const T &t : arr)
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memcpy_one(dest, t);
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}
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}
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// Does a memcpy of one or more values into a char array; for any given values that are basic
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// integer types the value is first converted from native to little-endian representation (if
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// necessary). Non-integer types with alignment of 1 (typically meaning structs containing only
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// char, bools, and arrays of those) and fixed-size arrays of the above (including string
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// literals) are also permitted; more complex types are not.
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//
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// The 1-byte alignment is here to protect you: if you have a larger alignment that usually means
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// you have a contained type with a larger alignment, which is probably an integer.
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template <typename... T>
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auto memcpy_le(const T &...t) {
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std::array<char, (0 + ... + sizeof(T))> r;
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char* dest = r.data();
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(..., detail::memcpy_one(dest, t));
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return r;
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}
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// Returns the `_count` element of a scoped enum, cast to the enum's underlying type
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template <typename Enum>
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constexpr auto enum_count = static_cast<std::underlying_type_t<Enum>>(Enum::_count);
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template <typename Enum>
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constexpr Enum enum_top = static_cast<Enum>(enum_count<Enum> - 1);
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uint64_t cumulative_block_sync_weight(cryptonote::network_type nettype, uint64_t start_block, uint64_t num_blocks);
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template <typename T, typename... Any>
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constexpr bool equals_any(const T& v, const Any&... any) {
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return (... || (v == any));
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}
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}
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