Merge "[adb] Use STL for ParseUInt() implementation" am: 61bffa5f

#pragma once

#include <charconv>

#include <condition_variable>

#include <mutex>

#include <string>

// Base-10 stroll on a string_view.

template <typename T>

inline bool ParseUint(T* result, std::string_view str, std::string_view* remaining = nullptr) {

    if (str.empty() || !isdigit(str[0])) {

    T value;

    const auto res = std::from_chars(str.begin(), str.end(), value);

    if (res.ec != std::errc{}) {

        return false;

    }

    T value = 0;

    std::string_view::iterator it;

    constexpr T max = std::numeric_limits<T>::max();

    for (it = str.begin(); it != str.end() && isdigit(*it); ++it) {

        if (value > max / 10) {

            return false;

        }

        value *= 10;

        T digit = *it - '0';

        if (value > max - digit) {

    if (res.ptr != str.end() && !remaining) {

        return false;

    }

        value += digit;

    }

    *result = value;

    if (remaining) {

        *remaining = str.substr(it - str.begin());

    } else {

      return it == str.end();

        *remaining = std::string_view(res.ptr, str.end() - res.ptr);

    }

    *result = value;

    return true;

}