118 lines
4.2 KiB
Bash
118 lines
4.2 KiB
Bash
#!/bin/bash
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# -*- coding: utf-8 -*-
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###########################################################################
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# #
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# envbot - an IRC bot in bash #
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# Copyright (C) 2007-2008 Arvid Norlander #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <http://www.gnu.org/licenses/>. #
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# #
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###########################################################################
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#---------------------------------------------------------------------
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## Convert values with units
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## @Dependencies This module depends on units
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## @Dependencies (http://www.gnu.org/software/units/units.html)
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#---------------------------------------------------------------------
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module_convert_INIT() {
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modinit_API='2'
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modinit_HOOKS=''
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if ! hash units > /dev/null 2>&1; then
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log_error "Couldn't find \"units\" command line tool. The convert module depend on that tool."
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return 1
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fi
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# Is it GNU units?
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if units --help > /dev/null 2>&1; then
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module_convert_gnu=1
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else
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module_convert_gnu=0
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fi
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commands_register "$1" 'convert' || return 1
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helpentry_module_convert_description="Convert between different units."
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helpentry_convert_convert_syntax='<value> <unit> [to] <unit>'
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helpentry_convert_convert_description='Convert the value from one unit to another.'
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}
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module_convert_UNLOAD() {
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return 0
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}
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module_convert_REHASH() {
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return 0
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}
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module_convert_handler_convert() {
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local sender="$1"
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local channel="$2"
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local sendernick=
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parse_hostmask_nick "$sender" 'sendernick'
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# If it isn't in a channel send message back to person who send it,
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# otherwise send in channel
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if ! [[ $2 =~ ^# ]]; then
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channel="$sendernick"
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fi
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local parameters="$3"
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# Format: convert <value> <in unit> <out unit>
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if [[ "$parameters" =~ ^([-0-9.]+)\ +([a-zA-Z0-9^/*]+)\ +(to\ +)?([a-zA-Z0-9^/*]+) ]]; then
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local value="${BASH_REMATCH[1]}"
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local inunit="${BASH_REMATCH[2]}"
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local outunit="${BASH_REMATCH[@]: -1}"
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# Construct expression of value and inunit,
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# needed because of temperature
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case $inunit in
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C|F|K)
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# This only work on GNU units.
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if [[ $module_convert_gnu = 1 ]]; then
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local inexpr="temp${inunit}($value)"
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else
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local inexpr="$value deg${inunit}"
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fi
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;;
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*)
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local inexpr="$value $inunit"
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;;
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esac
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# Out: Temperature
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case $outunit in
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C|F|K)
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# This only work on GNU units
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if [[ $module_convert_gnu = 1 ]]; then
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local outexpr="temp${outunit}"
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else
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local outexpr="deg${outunit}"
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fi
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local outunit="degrees $outunit"
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;;
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*)
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local outexpr="$outunit"
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;;
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esac
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# Need to do the local separately or return code will be messed up.
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local myresult
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# Force some security guards
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# We can't use -t, that doesn't work on *BSD units...
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# so we use awk to get interesting lines.
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# Then check pipestatus to give nice return code
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myresult="$(ulimit -t 4; units -q "$inexpr" "$outexpr" 2>&1 | awk '/^\t[0-9]+/ {print $1} /\*/ {print $2} /[Ee]rror|[Uu]nknown/'; [[ ${PIPESTATUS[0]} -eq 0 ]] || exit 1)"
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if [[ $? -eq 0 ]]; then
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send_msg "$channel" "${sendernick}: $myresult $outunit"
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else
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send_msg "$channel" "${sendernick}: Error: $myresult"
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fi
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else
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feedback_bad_syntax "$sendernick" "convert" "<value> <in unit> [to] <out unit>"
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fi
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}
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