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#!/bin/bash
# -*- coding: utf-8 -*-
###########################################################################
# #
# envbot - an IRC bot in bash #
# Copyright (C) 2007-2008 Arvid Norlander #
# #
# 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/>. #
# #
###########################################################################
#---------------------------------------------------------------------
## Functions for working with time.
#---------------------------------------------------------------------
#---------------------------------------------------------------------
## Check if a set time has passed
## @Type API
## @param Unix timestamp to check against
## @param Number of seconds
## @return 0 If at least the given number of seconds has passed
## @return 1 If it hasn't
#---------------------------------------------------------------------
time_check_interval() {
local newtime=
time_get_current 'newtime'
(( ( newtime - $1 ) > $2 ))
}
#---------------------------------------------------------------------
## Get current time (seconds since 1970-01-01 00:00:00 UTC)
## @Type API
## @param Variable to return current timestamp in
#---------------------------------------------------------------------
time_get_current() {
printf -v "$1" '%s' "$(( time_initial + SECONDS ))"
}
#---------------------------------------------------------------------
## Returns how long a time interval is in a human readable format.
## @Type API
## @param Time interval
## @param Variable to return result in.
## @Note Modified version of function posted by goedel at
## @Note http://forum.bash-hackers.org/index.php?topic=59.0
#---------------------------------------------------------------------
time_format_difference() {
local tdiv=$1
local tmod i
local output=""
for ((i=0; i < ${#time_format_units[@]}; ++i)); do
# n means no limit.
if [[ ${time_format_unitspan[i]} == n ]]; then
tmod=$tdiv
else
(( tmod = tdiv % time_format_unitspan[i] ))
(( tdiv = tdiv / time_format_unitspan[i] ))
fi
output="$tmod${time_format_units[i]} $output"
[[ $tdiv = 0 ]] && break
done
printf -v "$2" '%s' "${output% }"
}
###########################################################################
# Internal functions to core or this file below this line! #
# Module authors: go away #
###########################################################################
#---------------------------------------------------------------------
## Array used for time_format_difference
## @Type Private
#---------------------------------------------------------------------
declare -r time_format_units=( s min h d mon )
#---------------------------------------------------------------------
## Array used for time_format_difference
## @Type Private
## @Note n means no limit.
#---------------------------------------------------------------------
declare -r time_format_unitspan=( 60 60 24 30 n )
#---------------------------------------------------------------------
## Initial timestamp that we use to get current time later on.
## @Type Private
#---------------------------------------------------------------------
time_initial=''
#---------------------------------------------------------------------
## Set up time variables
## @Type Private
#---------------------------------------------------------------------
time_init() {
# Set up initial env
time_initial="$(date -u +%s)"
SECONDS=0
}
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