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1 #include "time_utils.h"
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2 #include <string>
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3 #include <cstdint>
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4 #include <cmath>
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5 #include <ctime>
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6 #include <cassert>
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7
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8 namespace Time {
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9
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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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13
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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((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((double)length / 3600.0);
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52 }
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53
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54 int64_t Duration::InDays() {
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55 return std::llround((double)length / 86400.0);
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56 }
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57
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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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63
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64 } |
