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|
use std
use "types"
use "names"
pkg date =
const sbfmt : (sb : std.strbuf#, args : std.valist#, opt : (byte[:], byte[:])[:] -> void)
;;
const __init__ = {
var d : instant
std.fmtinstall(std.typeof(d), sbfmt, [
("D", false),
("d", false),
("t", false),
("f", true),
][:])
}
/* Always formats in proleptic Gregorian format */
const sbfmt = {sb, ap, opts
var d : instant
var fmt
d = std.vanext(ap)
fmt = Datetimefmt;
for o in opts
match o
| ("d", ""): fmt = Datefmt
| ("t", ""): fmt = Timefmt
| ("D", ""): fmt = Datetimefmt
| ("f", opt): fmt = opt
| _: std.fatal("unknown option")
;;
;;
datefmt(sb, fmt, d)
}
const datefmt = {sb, fmt, d
var c
while fmt.len != 0
(c, fmt) = std.strstep(fmt)
if c == '%'
(c, fmt) = std.strstep(fmt)
match c
| 'a': std.sbfmt(sb, "{}", _names.abbrevday[d.day])
| 'A': std.sbfmt(sb, "{}", _names.fullday[d.day])
| 'b': std.sbfmt(sb, "{}", _names.abbrevmon[d.mon])
| 'B': std.sbfmt(sb, "{}", _names.fullmon[d.mon])
| 'c': datefmt(sb, "%Y-%m-%d %H:%M:%S %z", d)
| 'C': std.sbfmt(sb, "{p=0,w=2}", d.year % 100)
| 'd': std.sbfmt(sb, "{p=0,w=2}", d.day)
| 'D': datefmt(sb, "%m/%d/%y (wtf america)", d)
| 'e': std.sbfmt(sb, "{w=2}", d.day)
| 'F': datefmt(sb, "%Y-%m-%d", d)
/*
| 'G': s = std.sbfmt(sb, ...?
| 'g':
*/
| 'h': std.sbfmt(sb, "{}", _names.abbrevmon[d.mon])
| 'H': std.sbfmt(sb, "{p=0,w=2}", d.h)
| 'I': std.sbfmt(sb, "{p=0,w=2}", d.h % 12)
| 'j': std.sbfmt(sb, "year day... unimplemented.")
| 'k': std.sbfmt(sb, "{}", d.h)
| 'l': std.sbfmt(sb, "{}", d.h % 12)
| 'm': std.sbfmt(sb, "{}", d.mon)
| 'M': std.sbfmt(sb, "{p=0,w=2}", d.m)
| 'n': std.sbfmt(sb, "\n")
| 'O': std.sbfmt(sb, "unsupported %O")
| 'p': std.sbfmt(sb, "{}", ["AM", "PM"][d.h/12])
| 'P': std.sbfmt(sb, "{}", ["am", "pm"][d.h/12])
| 'r': datefmt(sb, "%I:%M:%S %P", d)
| 'R': datefmt(sb, "%H:%M", d)
| 's': std.sbfmt(sb, "{}", d.actual / 1_000_000)
| 'S': std.sbfmt(sb, "{p=0,w=2}", d.s)
| 'T': datefmt(sb, "%H:%M:%S", d)
| 't': std.sbfmt(sb, "\t")
| 'u': std.sbfmt(sb, "{}", d.wday)
| 'U': std.sbfmt(sb, "week number... unimplemented.")
| 'x': datefmt(sb, Datefmt, d)
| 'X': datefmt(sb, Timefmt, d)
| 'y': std.sbfmt(sb, "{}", d.year % 100)
| 'Y': std.sbfmt(sb, "{}", d.year)
| 'z': timezone(sb, d.tzoff)
| 'Z': std.sbfmt(sb, "{}", d.tzname)
| '%': std.sbfmt(sb, "%")
| _: std.fatal("unknown format character {}\n", c)
;;
else
std.sbfmt(sb, "{}", c)
;;
;;
}
const timezone = {sb, off
var h, m
var sep
sep = "+"
if off < 0
off = -off
sep = "-"
;;
off /= 1_000_000
h = off / 3600
m = off % 3600
-> std.sbfmt(sb, "{}{p=0,w=2}{p=0,w=2}", sep, h, m)
}
|
