Hush Full Node software. We were censored from Github, this is where all development happens now.
https://hush.is
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100 lines
2.8 KiB
100 lines
2.8 KiB
// Copyright (c) 2019-2020 The Bitcoin Core developers
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// Copyright (c) 2016-2024 The Hush developers
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// Distributed under the GPLv3 software license, see the accompanying
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// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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#ifndef BITCOIN_UTIL_STRING_H
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#define BITCOIN_UTIL_STRING_H
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#include "attributes.h"
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#include <algorithm>
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#include <array>
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#include <cstring>
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#include <locale>
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#include <sstream>
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#include <string>
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#include <vector>
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#include <cstdint>
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[[nodiscard]] inline std::string TrimString(const std::string& str, const std::string& pattern = " \f\n\r\t\v")
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{
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std::string::size_type front = str.find_first_not_of(pattern);
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if (front == std::string::npos) {
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return std::string();
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}
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std::string::size_type end = str.find_last_not_of(pattern);
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return str.substr(front, end - front + 1);
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}
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[[nodiscard]] inline std::string RemovePrefix(const std::string& str, const std::string& prefix)
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{
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if (str.substr(0, prefix.size()) == prefix) {
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return str.substr(prefix.size());
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}
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return str;
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}
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/**
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* Join a list of items
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*
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* @param list The list to join
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* @param separator The separator
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* @param unary_op Apply this operator to each item in the list
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*/
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template <typename T, typename BaseType, typename UnaryOp>
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auto Join(const std::vector<T>& list, const BaseType& separator, UnaryOp unary_op)
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-> decltype(unary_op(list.at(0)))
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{
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decltype(unary_op(list.at(0))) ret;
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for (size_t i = 0; i < list.size(); ++i) {
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if (i > 0) ret += separator;
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ret += unary_op(list.at(i));
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}
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return ret;
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}
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template <typename T>
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T Join(const std::vector<T>& list, const T& separator)
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{
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return Join(list, separator, [](const T& i) { return i; });
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}
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// Explicit overload needed for c_str arguments, which would otherwise cause a substitution failure in the template above.
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inline std::string Join(const std::vector<std::string>& list, const std::string& separator)
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{
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return Join<std::string>(list, separator);
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}
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/**
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* Check if a string does not contain any embedded NUL (\0) characters
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*/
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[[nodiscard]] inline bool ValidAsCString(const std::string& str) noexcept
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{
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return str.size() == strlen(str.c_str());
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}
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/**
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* Locale-independent version of std::to_string
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*/
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template <typename T>
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std::string ToString(const T& t)
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{
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std::ostringstream oss;
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oss.imbue(std::locale::classic());
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oss << t;
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return oss.str();
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}
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/**
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* Check whether a container begins with the given prefix.
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*/
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template <typename T1, size_t PREFIX_LEN>
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[[nodiscard]] inline bool HasPrefix(const T1& obj,
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const std::array<uint8_t, PREFIX_LEN>& prefix)
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{
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return obj.size() >= PREFIX_LEN &&
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std::equal(std::begin(prefix), std::end(prefix), std::begin(obj));
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}
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#endif // BITCOIN_UTIL_STRENCODINGS_H
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