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#!/bin/bash
download()
{
tput civis
local url=$1
printf "%b" "${IWHT} "
wget -nc -q --show-progress --progress=dot "$url" 2>&1 | grep --line-buffered "%" | \
sed -u -e "s,\.,,g" | awk '{printf("\b\b\b\b%4s", $2)}'
local retval="${PIPESTATUS[0]}"
if [ "${retval}" -ne 0 ]; then
printf "%b" "${RED}FAILED! WGET EXIT (${retval})\n${RST}"
exit "${retval}"
fi
tput cnorm
}
export -f download
# Shows a spinner while another command is running. Randomly picks one of 12 spinner styles.
# @args command to run (with any parameters) while showing a spinner.
# E.g. ‹spinner sleep 10›
function shutdown() {
tput cnorm # reset cursor
}
trap shutdown EXIT
function cursorBack() {
echo -en "\033[$1D"
}
function spinner() {
# make sure we use non-unicode character type locale
# (that way it works for any locale as long as the font supports the characters)
local numspinners=12
local LC_CTYPE=C
local pid=$1 # Process Id of the previous running command
local spintype=$2
if [ -z "${spintype}" ] || [ "${spintype}" -ge "${numspinners}" ]; then
spintype=$((RANDOM % numspinners))
fi
case "${spintype}" in
0)
local spin='.oO0Oo'
local charwidth=1
;;
1)
local spin='-\|/'
local charwidth=1
;;
2)
local spin='⠁⠂⠄⡀⢀⠠⠐⠈'
local charwidth=3
;;
3)
local spin="▁▂▃▄▅▆▇█▇▆▅▄▃▂▁"
local charwidth=3
;;
4)
local spin="▉▊▋▌▍▎▏▎▍▌▋▊▉"
local charwidth=3
;;
5)
local spin='←↖↑↗→↘↓↙'
local charwidth=3
;;
6)
local spin='▖▘▝▗'
local charwidth=3
;;
7)
local spin='┤┘┴└├┌┬┐'
local charwidth=3
;;
8)
local spin='◢◣◤◥'
local charwidth=3
;;
9)
local spin='◰◳◲◱'
local charwidth=3
;;
10)
local spin='◴◷◶◵'
local charwidth=3
;;
11)
local spin='◐◓◑◒'
local charwidth=3
;;
12)
local spin='⣾⣽⣻⢿⡿⣟⣯⣷'
local charwidth=3
;;
esac
local i=0
tput civis # cursor invisible
tput bold setaf 7
while kill -0 "$pid" 2>/dev/null; do
local i=$(((i + charwidth) % ${#spin}))
printf "%b" "${spin:$i:$charwidth}"
cursorBack 1
sleep .2
done
tput cnorm
wait "$pid" # capture exit code
return $?
}
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