From: Emanuel Berg <moasen@zoho.com>
To: zsh-users@zsh.org
Subject: DWIM interface to date args; reverse array
Date: Wed, 15 Nov 2017 15:37:44 +0100 [thread overview]
Message-ID: <86375f1ubr.fsf@zoho.com> (raw)
time-from () {
local from=$1
local to=${2:-now}
local -a order
### from
local -a from_items
from_items=(${(s:-:)from})
# instead of doing this one could reverse the original data array
# I Googled "zsh reverse array" and found ${(Oa)array}
# but seems to only work when I echo it,
# not assign it to another array
(( $from_items[1] < $from_items[3] )) && order=(d m y) || order=(y m d)
local from_y=$from_items[${order[(i)y]}]
local from_m=$from_items[${order[(i)m]}] # always 2
local from_d=$from_items[${order[(i)d]}]
from=${from_y}-${from_m}-${from_d}
### to
if [[ $to != now ]]; then
local -a to_items
to_items=(${(s:-:)to})
(( $to_items[1] < $to_items[3] )) && order=(d m y) || order=(y m d)
local to_y=$to_items[${order[(i)y]}]
local to_m=$to_items[${order[(i)m]}] # ditto
local to_d=$to_items[${order[(i)d]}]
to=${to_y}-${to_m}-${to_d}
fi
### compute
local ymd
local day
ymd=$(dateutils.ddiff $from $to -f '%Yy %mm %dd')
day=$(dateutils.ddiff $from $to -f 'total %dd')
### output
echo "${ymd// 0(y|m|d)/} ($day)"
}
--
underground experts united
http://user.it.uu.se/~embe8573
next reply other threads:[~2017-11-15 14:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20171115143925epcas2p39a7bfefe245b1b93d1d19dcf210770f3@epcas2p3.samsung.com>
2017-11-15 14:37 ` Emanuel Berg [this message]
2017-11-15 14:57 ` Peter Stephenson
2017-11-15 15:56 ` Emanuel Berg
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