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|
use fmt;
use time;
use time::date;
use time::chrono;
use os;
use strconv;
use strings;
use getopt;
type parseerror = !strconv::error;
export fn main() void = {
const cmd = getopt::parse(os::args,
"discord relative timestamp generator",
('a', "date", "Absolute date (this option is exclusive any other options will be ignored)"),
('d', "days", "Number of days"),
('w', "weeks", "Number of weeks"),
"m[:s]",
);
defer getopt::finish(&cmd);
let days: time::duration = 0;
let weeks: time::duration = 0;
for (let opt .. cmd.opts) {
switch (opt.0) {
case 'a' =>
match (abs(opt.1)) {
case let i: i64 =>
printdistamp(i);
return;
case let e: chrono::tzdberror =>
fmt::fatal(chrono::strerror(e));
case let e: date::parsefail =>
let s = strings::concat(date::strerror(e), "\n", "Date format must be 'year-month-day hour:minute:second'");
defer free(s);
fmt::errorln(s)!;
return;
case let e: date::error =>
fmt::fatal(date::strerror(e));
};
case 'w' =>
weeks = match (toweeks(opt.1)) {
case let i: time::duration =>
yield i;
case let e: strconv::error =>
fmt::fatal(strconv::strerror(e));
};
case 'd' =>
days = match (todays(opt.1)) {
case let d: time::duration =>
yield d;
case let e: parseerror =>
fmt::fatal(strerror(e));
};
case => abort();
};
};
if (len(cmd.args) > 1) {
os::exit(os::status::FAILURE);
};
let li = match (parsemainargs(cmd.args)) {
case let i: time::instant =>
yield i;
case let e: parseerror =>
fmt::fatal(strerror(e));
};
li = time::add(li, days);
li = time::add(li, weeks);
printdistamp(time::unix(li));
};
fn printdistamp(i: i64) void = {
fmt::printfln("<t:{}:R>", i)!;
};
fn abs(s: str) (i64 | date::error | chrono::tzdberror) = {
let v = date::newvirtual();
v.vloc = chrono::tz("Europe/Paris")?;
v.zoff = date::zflag::LAP_EARLY | date::zflag::GAP_END;
date::parse(&v, "%Y-%m-%d %T", s)?;
v.nanosecond = 0;
let d = date::realize(v, chrono::LOCAL)?;
//date::format(os::stderr, "%Y-%m-%d %T %L", &d)!;
return time::unix(*(&d: *time::instant));
};
fn parsemainargs(args: []str) (time::instant | parseerror) = {
return if (len(args) == 1) {
let timestr = args[0];
let i = time::now(time::clock::REALTIME);
let spl = strings::split(timestr, ":");
defer free(spl);
yield if (len(spl) > 2) {
fmt::fatal("Duration format: m or m:s");
} else {
yield parsetime(i, spl)?;
};
} else {
yield time::now(time::clock::REALTIME);
};
};
fn strerror(e: parseerror) str = {
return strconv::strerror(e);
};
fn parsetime(clk: time::instant, spl: []str) (time::instant | parseerror) = {
return if (len(spl) == 2) {
let m = strconv::stoi64(spl[0])?;
let s = strconv::stoi64(spl[1])?;
let d = (m * time::MINUTE) + (s * time::SECOND);
yield time::add(clk, d);
} else {
let m = strconv::stoi64(spl[0])?;
let d = m * time::MINUTE;
yield time::add(clk, d);
};
};
fn todays(days: str) (time::duration | parseerror) = {
let d = strconv::stoi(days)?;
return d * 24 * time::HOUR;
};
fn toweeks(weeks: str) (time::duration | parseerror) = {
let d = strconv::stoi(weeks)?;
return d * 7 * 24 * time::HOUR;
};
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