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/*
This file is part of solidity.
solidity is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
solidity is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file StringUtils.h
* @author Balajiganapathi S <balajiganapathi.s@gmail.com>
* @date 2017
*
* String routines
*/
#pragma once
#include <string>
#include <vector>
namespace dev
{
// Calculates the Damerau–Levenshtein distance between _str1 and _str2 and returns true if that distance is not greater than _maxDistance
// if _lenThreshold > 0 and the product of the strings length is greater than _lenThreshold, the function will return false
bool stringWithinDistance(std::string const& _str1, std::string const& _str2, size_t _maxDistance, size_t _lenThreshold = 0);
// Calculates the Damerau–Levenshtein distance between _str1 and _str2
size_t stringDistance(std::string const& _str1, std::string const& _str2);
// Return a string having elements of suggestions as quoted, alternative suggestions. e.g. "a", "b" or "c"
std::string quotedAlternativesList(std::vector<std::string> const& suggestions);
/// Joins collection of strings into one string with separators between, last separator can be different.
/// @param _list collection of strings to join
/// @param _separator defaults to ", "
/// @param _lastSeparator (optional) will be used to separate last two strings instead of _separator
/// @example join(vector<string>{"a", "b", "c"}, "; ", " or ") == "a; b or c"
template<class T>
std::string joinHumanReadable
(
T const& _list,
std::string const& _separator = ", ",
std::string const& _lastSeparator = ""
)
{
auto const itEnd = end(_list);
std::string result;
for (auto it = begin(_list); it != itEnd; )
{
std::string element = *it;
bool first = (it == begin(_list));
++it;
if (!first)
{
if (it == itEnd && !_lastSeparator.empty())
result += _lastSeparator; // last iteration
else
result += _separator;
}
result += std::move(element);
}
return result;
}
}
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