97 lines
2.8 KiB
Bash
97 lines
2.8 KiB
Bash
#!/usr/bin/env bash
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# ...
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# shellcheck disable=2317,2059
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PING_ITER=16
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# Progress bar dedicated variables
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# We can control how progress bar work
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PROGRESS_BAR_CHAR=(█ ▒)
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# control which information is displayed"
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PROGRESS_BAR_DISPLAY_INFO=1
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PROGRESS_BAR_DISPLAY_COMPL=1
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# Display template
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# We can control how informations is displayed
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PROGRESS_BAR_INFO_TEMPLATE=' %s [%2d/%2d] '
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PROGRESS_BAR_COMPL_TEMPLATE=' %2d%% '
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PROGRESS_BAR_TEMPLATE='\033[1m%s%s\033[0m%s%s\r'
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command() {
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local -r host=${1?"first parameter must be an host"}
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local -r iteration=${2?"second parameter must be an iteration number"}
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local -r cmd=(ping -c "${iteration}" "${host}")
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"${cmd[@]}"
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}
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draw_progressbar() {
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# function parameters
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local -r progress=${1?"progress is mandatory"}
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local -r total=${2?"total elements is mandatory"}
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local -r info=${3:-"In progress"}
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# function local variables
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local progress_segment
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local todo_segment
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local info_segment=""
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local compl_segment=""
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if [[ ${PROGRESS_BAR_DISPLAY_INFO:-1} -eq 1 ]]; then
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printf -v info_segment "${PROGRESS_BAR_INFO_TEMPLATE}" \
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"$info" "$progress" "$total"
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fi
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local -r progress_ratio=$((progress * 100 / total))
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if [[ ${PROGRESS_BAR_DISPLAY_COMPL:-0} -eq 1 ]]; then
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printf -v compl_segment "${PROGRESS_BAR_COMPL_TEMPLATE}" \
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"$progress_ratio"
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fi
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# progress bar construction
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# calculate each element sizes, bar must fit in ou screen
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local -r bar_size=$((COLUMNS - ${#info_segment} - ${#compl_segment}))
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local -r progress_segment_size=$((bar_size * progress_ratio / 100))
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local -r todo_segment_size=$((bar_size - progress_segment_size))
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printf -v progress_segment "%${progress_segment_size}s" ""
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printf -v todo_segment "%${todo_segment_size}s" ""
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printf >&2 "$PROGRESS_BAR_TEMPLATE" \
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"$info_segment" \
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"${progress_segment// /${PROGRESS_BAR_CHAR[0]}}" \
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"${todo_segment// /${PROGRESS_BAR_CHAR[1]}}" \
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"$compl_segment"
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}
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parse_output() {
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trap change_column_size WINCH
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while read -r line; do
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if [[ "$line" =~ icmp_seq=([[:digit:]]{1,}).*time=(.*) ]]; then
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draw_progressbar \
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"${BASH_REMATCH[1]}" \
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"$PING_ITER" \
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"Ping in progess"
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elif [[ "$line" =~ ^PING(.*\(.*\)).* ]]; then
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printf "Launch ping command to %s with %d iterations\n" \
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"${BASH_REMATCH[1]}" \
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"$PING_ITER"
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elif [[ "$line" =~ .*packets\ transmitted.* ]]; then
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printf >&2 "\033[0K\r"
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printf "%s\n" "$line"
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fi
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done
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}
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change_column_size() {
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printf >&2 "%${COLUMNS}s" ""
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printf >&2 "\033[0K\r"
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COLUMNS=$(tput cols)
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}
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main() {
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COLUMNS=$(tput cols)
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command "aquilenet.fr" "$PING_ITER" > >(parse_output)
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}
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main
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exit 0
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