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// lib.rs
//
// Copyright 2021-2023 nee <nee-git@patchouli.garden>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// SPDX-License-Identifier: GPL-3.0-or-later
pub mod date;
pub mod time;
pub use crate::date::*;
pub use crate::time::*;
pub fn print_format(fr: &FrDate, dt: &DecimalTime, format: &str) {
let parts = format.split('%');
let mut buffer: String = String::new();
for (count, p) in parts.enumerate() {
// not a format
if count == 0 && !format.starts_with('%') {
buffer.push_str(p);
// %% a literal %
} else if p.is_empty() && (count != 0 || format.starts_with("%%")) {
buffer.push('%');
// CUSTOM FORMATS
// %dth day with 'nth' attachment (e.g., 2nd)
} else if let Some(text) = p.strip_prefix("dth") {
buffer.push_str(&(fr.day + 1).to_string());
buffer.push_str(nth_str(fr.day));
buffer.push_str(text);
// %di day as number without prefix (e.g., 2)
} else if let Some(text) = p.strip_prefix("di") {
buffer.push_str(&(fr.day + 1).to_string());
buffer.push_str(text);
// %L Link to wikipedia for thing of the day (e.g., https://en.wikipedia.org/wiki/Lily_of_the_valley)
} else if let Some(text) = p.strip_prefix('L') {
buffer.push_str(&day_wiki_link(fr.day_name()));
buffer.push_str(text);
// TODO find some other %name for this.
// %WT label of the thing of the day (e.g., Lily of the valley)
} else if let Some(text) = p.strip_prefix("name") {
buffer.push_str(day_wiki_label(fr.day_name()));
buffer.push_str(text);
// %a locale's abbreviated weekday name (e.g., Sun)
} else if let Some(text) = p.strip_prefix('a') {
buffer.push_str(fr.day_of_week_name_short());
buffer.push_str(text);
// %A locale's full weekday name (e.g., Sunday)
} else if let Some(text) = p.strip_prefix('A') {
buffer.push_str(fr.day_of_week_name());
buffer.push_str(text);
// %b locale's abbreviated month name (e.g., Jan)
// %h same as %b
} else if let Some(text) = p.strip_prefix('b').or(p.strip_prefix('h')) {
buffer.push_str(fr.month_name_short());
buffer.push_str(text);
// %B locale's full month name (e.g., January)
} else if let Some(text) = p.strip_prefix('B') {
buffer.push_str(fr.month_name());
buffer.push_str(text);
// %c locale's date and time (e.g., Thu Mar 3 23:05:25 2005) TODO
// %C century; like %Y, except omit last two digits (e.g., 20)
} else if let Some(text) = p.strip_prefix('C') {
buffer.push_str(&(fr.year - (fr.year % 100)).to_string());
buffer.push_str(text);
// %d day of month (e.g., 01)
} else if let Some(text) = p.strip_prefix('d') {
if fr.day < 10 {
buffer.push('0');
}
buffer.push_str(&fr.day.to_string());
buffer.push_str(text);
// %D date; same as %m/%d/%y
} else if let Some(text) = p.strip_prefix('D') {
buffer.push_str(&fr.month.to_string());
buffer.push('/');
buffer.push_str(&fr.day.to_string());
buffer.push('/');
buffer.push_str(&fr.year.to_string());
buffer.push_str(text);
// %e day of month, space padded; same as %_d
} else if let Some(text) = p.strip_prefix('e') {
if fr.day < 10 {
buffer.push(' ');
}
buffer.push_str(&fr.day.to_string());
buffer.push_str(text);
// %f fractional time (percentage of the day passed)
} else if let Some(text) = p.strip_prefix('f') {
buffer.push_str(&dt.fraction().to_string());
buffer.push_str(text);
// %F full date; same as %Y-%m-%d
} else if let Some(text) = p.strip_prefix('F') {
buffer.push_str(&fr.year.to_string());
buffer.push('-');
buffer.push_str(&fr.month.to_string());
buffer.push('-');
buffer.push_str(&fr.day.to_string());
buffer.push_str(text);
// %g last two digits of year of ISO week number (see %G) TODO
// %G year of ISO week number (see %V); normally useful only with %V TODO
// %H hour (00..23)
// %I hour (01..12) - same as %H
} else if let Some(text) = p.strip_prefix('H').or(p.strip_prefix('I')) {
buffer.push_str(&dt.hours().to_string());
buffer.push_str(text);
// %j day of year (001..366)
} else if let Some(text) = p.strip_prefix('j') {
buffer.push_str(&(fr.ordinal() + 1).to_string());
buffer.push_str(text);
// %k hour, space padded ( 0..23); same as %_H
// %l hour, space padded ( 1..12); same as %_I
} else if let Some(text) = p.strip_prefix('k').or(p.strip_prefix('l')) {
// not sure if this is a good idea
buffer.push(' ');
buffer.push_str(&dt.hours().to_string());
buffer.push_str(text);
// %m month (01..12)
} else if let Some(text) = p.strip_prefix('m') {
buffer.push_str(&(fr.month + 1).to_string());
buffer.push_str(text);
// %M minute (00..59)
} else if let Some(text) = p.strip_prefix('M') {
buffer.push_str(&dt.minutes().to_string());
buffer.push_str(text);
// %n a newline
} else if let Some(text) = p.strip_prefix('n') {
buffer.push('\n');
buffer.push_str(text);
// %N nanoseconds (000000000..999999999)
} else if let Some(text) = p.strip_prefix('N') {
buffer.push_str(&dt.standard_nanoseconds().to_string());
buffer.push_str(text);
// %p locale's equivalent of either AM or PM; blank if not known
// %P like %p, but lower case
} else if let Some(text) = p.strip_prefix('p').or(p.strip_prefix('P')) {
buffer.push_str(text); // NO AM/PM
// %q quarter of year (1..4) TODO
// } else if let Some(text) = p.strip_prefix('q') {
// buffer.push_str(&((fr.month as f32 / 4.0).round()+1).to_string());
// buffer.push_str(text);
// %R 24-hour hour and minute; same as %H:%M
} else if let Some(text) = p.strip_prefix('R') {
buffer.push_str(&dt.hours().to_string());
buffer.push(':');
buffer.push_str(&dt.minutes().to_string());
buffer.push_str(text);
// %s seconds since 1970-01-01 00:00:00 UTC
// } else if let Some(text) = p.strip_prefix('s') {
// // TODO TIMEZONE
// // TODO LEAP YEARS
// let year_secs = ((fr.year - 179) * SECONDS_IN_YEAR) + dt.secs;
// buffer.push_str(&year_secs.to_string());
// buffer.push_str(text);
// %S second (00..60)
} else if let Some(text) = p.strip_prefix('S') {
buffer.push_str(&dt.seconds().to_string());
buffer.push_str(text);
// %t a tab
} else if let Some(text) = p.strip_prefix('t') {
buffer.push('\t');
buffer.push_str(text);
// %T time; same as %H:%M:%S
// %r locale's 12-hour clock time (e.g., 11:11:04 PM)
} else if let Some(text) = p.strip_prefix('T').or(p.strip_prefix('r')) {
buffer.push_str(&dt.hours().to_string());
buffer.push(':');
buffer.push_str(&dt.minutes().to_string());
buffer.push(':');
buffer.push_str(&dt.seconds().to_string());
buffer.push_str(text);
// %u day of week (1..7); 1 is Monday
} else if let Some(text) = p.strip_prefix('u') {
buffer.push_str(&(fr.day_of_week() + 1).to_string());
buffer.push_str(text);
// %U week number of year, with Sunday as first day of week (00..53) TODO
// %W week number of year, with Monday as first day of week (00..53) TODO
// %V ISO week number, with Monday as first day of week (01..53) TODO
// %w day of week (0..6); 0 is Sunday
} else if let Some(text) = p.strip_prefix('w') {
buffer.push_str(&fr.day_of_week().to_string());
buffer.push_str(text);
// %x locale's date representation (e.g., 12/31/99) TODO
// %X locale's time representation (e.g., 23:13:48) TODO
// %y last two digits of year (00..99)
} else if let Some(text) = p.strip_prefix('y') {
buffer.push_str(&(fr.year % 100).to_string());
buffer.push_str(text);
// %Y year
} else if let Some(text) = p.strip_prefix('Y') {
buffer.push_str(&fr.year.to_string());
buffer.push_str(text);
// %z +hhmm numeric time zone (e.g., -0400) TODO
// %:z +hh:mm numeric time zone (e.g., -04:00) TODO
// %::z +hh:mm:ss numeric time zone (e.g., -04:00:00) TODO
// %:::z numeric time zone with : to necessary precision (e.g., -04, +05:30) TODO
// %Z alphabetic time zone abbreviation (e.g., EDT) TODO
} else {
buffer.push_str(p);
}
}
println!("{}", buffer);
}
pub fn now() -> (DecimalTime, FrDate) {
let now: chrono::DateTime<chrono::Local> = chrono::Local::now();
let dt = crate::DecimalTime::from(now.naive_local().time());
let fr = crate::FrDate::from(now.naive_local().date());
(dt, fr)
}
fn nth_str(n: u32) -> &'static str {
match n {
1 => "st",
2 => "nd",
3 => "rd",
_ => "th",
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn hi() {
let (dt, fr) = now();
crate::print_format(
&fr,
&dt,
"It's %T, today is the %dth of %B in %Y. It's the day of the %name.",
);
}
}