xieme-art/content/articles/2024/bash_printf/files/script4_progress.sh

42 lines
1,012 B
Bash

#!/usr/bin/env bash
# shellcheck disable=2317
PING_ITER=16
PROGRESS_BAR_CHAR=(█ ▒)
command() {
local -r host=${1?"first parameter must be an host"}
local -r iteration=${2?"second parameter must be an iteration number"}
local -r cmd=(ping -c "${iteration}" "${host}")
"${cmd[@]}"
}
draw_progressbar() {
local -r progress=${1?"progress is mandatory"}
local -r total=${2?"total is mandatory"}
local progress_segment
local todo_segment
printf -v progress_segment "%${progress}s" ""
printf -v todo_segment "%$((total - progress))s" ""
printf >&2 "%s%s\r" \
"${progress_segment// /${PROGRESS_BAR_CHAR[0]}}" \
"${todo_segment// /${PROGRESS_BAR_CHAR[1]}}"
}
parse_output() {
while read -r line; do
if [[ "$line" =~ icmp_seq=([[:digit:]]{1,}).*time=(.*) ]]; then
draw_progressbar "${BASH_REMATCH[1]}" "$PING_ITER"
fi
done
}
main() {
command "aquilenet.fr" "$PING_ITER" > >(parse_output)
}
main
exit 0
# [...]