octane 0.1.2

A web server built from the ground up.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152

use crate::constants::{
    DAYS_IN_MONTH, DAYS_PER_100Y, DAYS_PER_400Y, DAYS_PER_4Y, LEAPOCH, MONTHS, SP, WEEKS,
};
use std::convert::TryInto;
use std::time::{SystemTime, UNIX_EPOCH};

pub struct Time {
    min: i64,
    sec: i64,
    hour: i64,
    week: i64,
    year: i64,
    month: i64,
    day: i64,
}

trait Padding {
    fn pad_zero(self) -> String;
}

impl Padding for i64 {
    fn pad_zero(self) -> String {
        let day_string = format!("{}{}", 0, self);
        (&day_string[day_string.len() - 2..]).to_owned()
    }
}

impl Time {
    pub fn now() -> Option<Self> {
        let stamp = match SystemTime::now().duration_since(UNIX_EPOCH) {
            Ok(n) => {
                if let Ok(x) = n.as_secs().try_into() {
                    x
                } else {
                    return None;
                }
            }
            Err(m) => panic!("Got time error: {}", m),
        };
        Self::time(stamp)
    }
    pub fn format(&self) -> String {
        if let Some(month_day) = self.month_day() {
            if let Some(week_day) = self.week_day() {
                let date = format!(
                    "{}{}{}{}{}",
                    self.day.pad_zero(),
                    SP,
                    month_day,
                    SP,
                    self.year
                );
                let time = format!(
                    "{}:{}:{}",
                    self.hour.pad_zero(),
                    self.min.pad_zero(),
                    self.sec.pad_zero()
                );
                format!("{},{}{}{}{}{}GMT", week_day, SP, date, SP, time, SP)
            } else {
                String::new()
            }
        } else {
            String::new()
        }
    }
    pub fn with_stamp(self, stamp: i64) -> Option<Self> {
        Self::time(stamp)
    }
    fn week_day(&self) -> Option<String> {
        if let Some(week) = WEEKS.iter().enumerate().find(|(i, _)| {
            if let Ok(week_day) = self.week.try_into() {
                *i == week_day
            } else {
                false
            }
        }) {
            Some(week.1.to_string())
        } else {
            None
        }
    }
    fn month_day(&self) -> Option<String> {
        if let Some(month) = MONTHS.iter().enumerate().find(|(i, _)| {
            if let Ok(month_day) = self.month.try_into() {
                *i == month_day
            } else {
                false
            }
        }) {
            Some(month.1.to_string())
        } else {
            None
        }
    }

    fn time(stamp: i64) -> Option<Self> {
        let secs = (stamp) - LEAPOCH;
        let mut days = secs / 86400;
        let mut remsecs = secs % 86400;
        if remsecs < 0 {
            remsecs += 86400;
            days -= 1;
        }
        let mut wday = (days + 3) % 7;
        if wday < 0 {
            wday += 7;
        }
        let mut qc_cycles = days / (DAYS_PER_400Y);
        let mut remdays = days % (DAYS_PER_400Y);
        if remdays < 0 {
            remdays += DAYS_PER_400Y;
            qc_cycles -= 1;
        }
        let mut c_cycles = remdays / DAYS_PER_100Y;
        if c_cycles == 4 {
            c_cycles -= 1;
        }
        remdays -= c_cycles * DAYS_PER_100Y;
        let mut q_cycles = remdays / DAYS_PER_4Y;
        if q_cycles == 25 {
            q_cycles -= 1;
        }
        remdays -= q_cycles * DAYS_PER_4Y;
        let mut remyears = remdays / 365;
        if remyears == 4 {
            remyears -= 1;
        }
        remdays -= remyears * 365;
        let years = remyears + 4 * q_cycles + 100 * c_cycles + 400 * qc_cycles;
        let mut month: usize = 0;
        while DAYS_IN_MONTH[month] <= remdays {
            remdays -= DAYS_IN_MONTH[month];
            month += 1;
        }
        let mut final_year = years + 100;
        let mut final_mon = (month as i64) + 2;
        if final_mon >= 12 {
            final_mon -= 12;
            final_year += 1;
        }
        Some(Time {
            min: (remsecs / 60) % 60,
            sec: remsecs % 60,
            hour: remsecs / 3600,
            week: wday,
            day: remdays + 1,
            year: 1900 + final_year,
            month: final_mon,
        })
    }
}