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Address revision requests:

- replace `local var` with `_var` (POSIX style);
- move inline comments

Signed-off-by: RD WebDesign <github@rdwebdesign.com.br>
This commit is contained in:
RD WebDesign 2022-07-24 20:15:20 -03:00
parent 8d1f286f30
commit d89720330f
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@ -1346,34 +1346,41 @@ check_database_integrity() {
}
# Show a text spinner during a long process run
#
spinner(){
# Show the spinner only if there is a tty
if tty -s; then
local PID=$! # PID of the most recent background process
local spin="/-\|"
local start=0
local elapsed=0
local i=1
# PID of the most recent background process
_PID=$!
_spin="/-\|"
_start=0
_elapsed=0
_i=1
start=$(date +%s) # Start the counter
# Start the counter
_start=$(date +%s)
tput civis > /dev/tty # Hide the cursor
trap 'tput cnorm > /dev/tty' EXIT # ensures cursor is visible again, in case of premature exit
# Hide the cursor
tput civis > /dev/tty
while [ -d /proc/$PID ]; do
elapsed=$(( $(date +%s) - start ))
# ensures cursor is visible again, in case of premature exit
trap 'tput cnorm > /dev/tty' EXIT
while [ -d /proc/$_PID ]; do
_elapsed=$(( $(date +%s) - _start ))
# use hours only if needed
if [ "$elapsed" -lt 3600 ]; then
printf "\r${spin:i++%${#spin}:1} %02d:%02d" $((elapsed/60)) $((elapsed%60)) >"$(tty)"
if [ "$_elapsed" -lt 3600 ]; then
printf "\r${_spin:_i++%${#_spin}:1} %02d:%02d" $((_elapsed/60)) $((_elapsed%60)) >"$(tty)"
else
printf "\r${spin:i++%${#spin}:1} %02d:%02d:%02d" $((elapsed/3600)) $(((elapsed/60)%60)) $((elapsed%60)) >"$(tty)"
printf "\r${_spin:_i++%${#_spin}:1} %02d:%02d:%02d" $((_elapsed/3600)) $(((_elapsed/60)%60)) $((_elapsed%60)) >"$(tty)"
fi
sleep 0.25
done
printf "\r" >"$(tty)" # Return to the begin of the line after completion (the spinner will be overwritten)
tput cnorm > /dev/tty # Restore cursor visibility
# Return to the begin of the line after completion (the spinner will be overwritten)
printf "\r" >"$(tty)"
# Restore cursor visibility
tput cnorm > /dev/tty
fi
}