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annotate src/core/time.cc @ 187:9613d72b097e

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*: multiple performance improvements like marking `static const` when it makes sense... date: change old stupid heap-based method to a structure which should make copying the thing actually make a copy. also many performance-based changes, like removing the std::tie dependency and forward-declaring nlohmann json *: replace every instance of QString::fromUtf8 to Strings::ToQString. the main difference is that our function will always convert exactly what is in the string, while some other times it would only convert up to the nearest NUL byte
author Paper <mrpapersonic@gmail.com>
date Wed, 06 Dec 2023 13:43:54 -0500
parents 9b2b41f83a5e
children 168382a89b21
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1 #include "core/time.h"
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2 #include <cassert>
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3 #include <cmath>
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4 #include <cstdint>
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5 #include <ctime>
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6 #include <string>
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8 namespace Time {
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10 Duration::Duration(int64_t l) {
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11 length = l;
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12 }
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14 std::string Duration::AsRelativeString() {
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15 std::string result;
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17 auto get = [](int64_t val, const std::string& s, const std::string& p) {
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18 return std::to_string(val) + " " + (val == 1 ? s : p);
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19 };
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20
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21 if (InSeconds() < 60)
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22 result = get(InSeconds(), "second", "seconds");
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23 else if (InMinutes() < 60)
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24 result = get(InMinutes(), "minute", "minutes");
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25 else if (InHours() < 24)
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26 result = get(InHours(), "hour", "hours");
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27 else if (InDays() < 28)
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28 result = get(InDays(), "day", "days");
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29 else if (InDays() < 365)
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30 result = get(InDays() / 30, "month", "months");
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31 else
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32 result = get(InDays() / 365, "year", "years");
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33
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34 if (length < 0)
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35 result = "In " + result;
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36 else
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37 result += " ago";
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38
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39 return result;
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40 }
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42 int64_t Duration::InSeconds() {
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43 return length;
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44 }
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46 int64_t Duration::InMinutes() {
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47 return std::llround(static_cast<double>(length) / 60.0);
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48 }
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50 int64_t Duration::InHours() {
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51 return std::llround(static_cast<double>(length) / 3600.0);
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52 }
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54 int64_t Duration::InDays() {
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55 return std::llround(static_cast<double>(length) / 86400.0);
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56 }
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58 int64_t GetSystemTime() {
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59 assert(sizeof(int64_t) >= sizeof(time_t));
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60 time_t t = std::time(nullptr);
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61 return *reinterpret_cast<int64_t*>(&t);
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62 }
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64 } // namespace Time