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annotate src/core/time.cc @ 137:69db40272acd

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dep/animia: [WIP] huge refactor this WILL NOT compile, because lots of code has been changed and every API in the original codebase has been removed. note that this api setup is not exactly permanent...
author Paper <mrpapersonic@gmail.com>
date Fri, 10 Nov 2023 13:52:47 -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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16
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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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41
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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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45
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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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49
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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