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1bb512
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#!/bin/bash |
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# Copyright (c) 2009, Scott Barr <gsbarr@gmail.com> |
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# All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions are met: |
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# * Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# * Redistributions in binary form must reproduce the above copyright |
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# notice, this list of conditions and the following disclaimer in the |
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# documentation and/or other materials provided with the distribution. |
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# * Neither the name of the <organization> nor the |
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# names of its contributors may be used to endorse or promote products |
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# derived from this software without specific prior written permission. |
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# |
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS'' |
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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# DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY |
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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function countdown |
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{ |
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local OLD_IFS="${IFS}" |
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IFS=":" |
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local ARR=( $1 ) ; shift |
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IFS="${OLD_IFS}" |
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local PREFIX="$*" ; [ -n "${PREFIX}" ] && PREFIX="${PREFIX}" |
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local SECONDS=$(( (ARR[0] * 60 * 60) + (ARR[1] * 60) + ARR[2] )) |
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local START=$(date +%s) |
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local END=$((START + SECONDS)) |
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local CUR=$START |
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while [[ $CUR -lt $END ]] |
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do |
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CUR=$(date +%s) |
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LEFT=$((END-CUR)) |
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printf "\r${PREFIX} %02d" \ |
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$((LEFT%60)) |
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sleep 1 |
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done |
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echo " " |
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} |
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function outputVar() |
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{ |
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y=\$"$1" |
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x=`eval "expr \"$y\" "` |
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eval "$1=\"$2\"" |
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} |
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function valid_input() |
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{ |
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local correct="no" |
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Return_Val="" |
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if [ -z "$2" ] |
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then |
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local opts=( yes no ) |
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local opt_list="yes/no" |
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else |
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local opts=( `echo $2 | tr "/" " "` ) |
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local opt_list=$2 |
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fi |
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while [ "$correct" != "yes" ] |
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do |
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if [ -n "$3" ] |
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then |
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line_prompt="$1 [default: $3] " |
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else |
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line_prompt="$1 [$opt_list] " |
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fi |
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echo -en "$line_prompt" |
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read answer |
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if [ -n "$3" ] |
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then |
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answer=$3 |
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else |
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ret=`echo "${opts[@]}" | grep -w "$answer"` |
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fi |
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if [ $? -eq 0 ] |
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then |
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correct="yes" |
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Return_Val=$answer |
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fi |
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done |
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} |
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function start_spinner() |
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{ |
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parent_pid=$$ |
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(SP_STRING="/-\\|"; while [ -d /proc/$1 ] && [ -d /proc/$parent_pid ]; do printf "\e[1;37m\e7[ %1.1s ] \e8\e[0m" "$SP_STRING"; sleep .2; SP_STRING=${SP_STRING#"${SP_STRING%?}"}${SP_STRING%?}; done) & |
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disown |
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spinner_pid=$! |
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} |
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function stop_spinner() |
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{ |
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if [ $spinner_pid -gt 0 ] |
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then |
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kill -HUP $spinner_pid 2>/dev/null |
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fi |
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} |
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function exec_command() |
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{ |
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printf "%-40s" "$2" |
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(eval $1 >/dev/null 2>&1) & |
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pid=$! |
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start_spinner |
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wait $pid |
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status=$? |
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stop_spinner |
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if [ $status -eq 0 ]; |
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then |
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echo -e "\e[1;37m[ \e[0m\e[1;32mok\e[0m\e[1;37m ]\e[0m" |
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else |
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echo -e "\e[1;37m[ \e[0m\e[1;31mfailed\e[0m\e[1;37m ]\e[0m" |
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echo -e "The following command did not complete successfully:" |
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echo -e "$1" |
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exit 1 |
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fi |
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} |