Differential D9183 Diff 27597 src/util/strencodings.h

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src/util/strencodings.h

	// Copyright (c) 2009-2010 Satoshi Nakamoto			// Copyright (c) 2009-2010 Satoshi Nakamoto
	// Copyright (c) 2009-2016 The Bitcoin Core developers			// Copyright (c) 2009-2016 The Bitcoin Core developers
	// Distributed under the MIT software license, see the accompanying			// Distributed under the MIT software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.			// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	/**			/**
	* Utilities for converting data from/to strings.			* Utilities for converting data from/to strings.
	*/			*/
	#ifndef BITCOIN_UTIL_STRENCODINGS_H			#ifndef BITCOIN_UTIL_STRENCODINGS_H
	#define BITCOIN_UTIL_STRENCODINGS_H			#define BITCOIN_UTIL_STRENCODINGS_H

	#include <attributes.h>			#include <attributes.h>
				#include <span.h>

	#include <cstdint>			#include <cstdint>
	#include <iterator>			#include <iterator>
	#include <string>			#include <string>
	#include <vector>			#include <vector>

	#define ARRAYLEN(array) (sizeof(array) / sizeof((array)[0]))			#define ARRAYLEN(array) (sizeof(array) / sizeof((array)[0]))

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	/**			/**
	* Convert string to double with strict parse error feedback.			* Convert string to double with strict parse error feedback.
	* @returns true if the entire string could be parsed as valid double, false if			* @returns true if the entire string could be parsed as valid double, false if
	* not the entire string could be parsed or when overflow or underflow occurred.			* not the entire string could be parsed or when overflow or underflow occurred.
	*/			*/
	NODISCARD bool ParseDouble(const std::string &str, double *out);			NODISCARD bool ParseDouble(const std::string &str, double *out);

	template <typename T> std::string HexStr(const T itbegin, const T itend) {			/**
	std::string rv;			* Convert a span of bytes to a lower-case hexadecimal string.
	static const char hexmap[16] = {'0', '1', '2', '3', '4', '5', '6', '7',			*/
	'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};			std::string HexStr(const Span<const uint8_t> s);
	rv.reserve(std::distance(itbegin, itend) * 2);			inline std::string HexStr(const Span<const char> s) {
	for (T it = itbegin; it < itend; ++it) {			return HexStr(MakeUCharSpan(s));
	uint8_t val = uint8_t(*it);
	rv.push_back(hexmap[val >> 4]);
	rv.push_back(hexmap[val & 15]);
	}
	return rv;
	}

	template <typename T> inline std::string HexStr(const T &vch) {
	return HexStr(vch.begin(), vch.end());
	}			}

	/**			/**
	* Format a paragraph of text to a fixed width, adding spaces for indentation to			* Format a paragraph of text to a fixed width, adding spaces for indentation to
	* any added line.			* any added line.
	*/			*/
	std::string FormatParagraph(const std::string &in, size_t width = 79,			std::string FormatParagraph(const std::string &in, size_t width = 79,
	size_t indent = 0);			size_t indent = 0);
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