69 lines
2.1 KiB
Rust
69 lines
2.1 KiB
Rust
fn number_to_string<'a, 'b>(number: u8) -> Result<&'a str, &'b str> {
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match number {
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1 => Ok("one"),
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2 => Ok("two"),
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3 => Ok("three"),
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4 => Ok("four"),
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5 => Ok("five"),
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6 => Ok("six"),
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7 => Ok("seven"),
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8 => Ok("eight"),
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9 => Ok("nine"),
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10 => Ok("ten"),
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11 => Ok("eleven"),
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12 => Ok("twelve"),
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13 => Ok("thirteen"),
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14 => Ok("fourteen"),
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16 => Ok("sixteen"),
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17 => Ok("seventeen"),
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18 => Ok("eighteen"),
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19 => Ok("nineteen"),
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20 => Ok("twenty"),
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21 => Ok("twentyone"),
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22 => Ok("twentytwo"),
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23 => Ok("twentythree"),
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24 => Ok("twentyfour"),
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25 => Ok("twentyfive"),
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26 => Ok("twentysix"),
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27 => Ok("twentyseven"),
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28 => Ok("twentyeight"),
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29 => Ok("twentynine"),
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_ => Err("Number not found"),
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}
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}
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fn minute_to_string<'a>(minutes: u8) -> Result<String, &'a str> {
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match minutes {
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0 => Ok(String::from("o' clock")),
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1 => Ok(String::from("one minute past")),
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15 => Ok(String::from("quarter past")),
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30 => Ok(String::from("half past")),
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45 => Ok(String::from("quarter to")),
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59 => Ok(String::from("one minute to")),
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2..30 => Ok(format!("{} minutes past", number_to_string(minutes)?)),
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31..59 => Ok(format!("{} minutes to", number_to_string(60 - minutes)?)),
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_ => Err("Minute not found"),
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}
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}
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pub fn time_to_string<'a>(hours: u8, minutes: u8) -> Result<String, &'a str> {
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if (1..=12).contains(&hours) && (0..60).contains(&minutes) {
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let hours = hours + if minutes > 30 { 1 } else { 0 };
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if minutes == 0 {
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Ok(format!(
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"{} {}",
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number_to_string(hours)?,
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minute_to_string(minutes)?
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))
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} else {
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Ok(format!(
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"{} {}",
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minute_to_string(minutes)?,
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number_to_string(hours)?
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))
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}
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} else {
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Err("Time not valid")
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}
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}
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