dotfiles/.i3blocks/mpd

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#!/bin/bash -x
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# Fonction de réinitialisation en cas de perte de la connexion
self-reset() {
echo "<span foreground=\"#515151\">[--:-- --:-- --:--]</span>"
sleep 5
exec "$0"
}
trap self-reset PIPE
# Initialisation de la connexion au serveur
coproc nc -U /home/breizh/.mpd/socket
IN=${COPROC[1]}
OUT=${COPROC[0]}
#echo "password xxx" >&${IN}
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sed '/^OK/q' <&$OUT &>/dev/null
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# Initialisation des valeurs par défaut et des fonctions
declare -i SCROLL=50 I=0
declare -- artist song oldfile
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human_time() {
local seconds="$1"
if [[ "$seconds" -lt 0 ]]
then
echo "--:--"
return
fi
local minutes=$(( $seconds / 60 ))
seconds=$(( $seconds % 60 ))
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if [[ "$minutes" -ge 60 ]]
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then
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local hours=$(( $minutes / 60 ))
minutes=$(( $minutes % 60 ))
printf "%02dh%02d\n" "$hours" "$minutes"
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else
printf "%02d:%02d\n" "$minutes" "$seconds"
fi
return
}
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# Initialisation de létat
echo "status" >&$IN
while read -t 1 -u $OUT output
do
[[ "$output" == "OK" ]] && break
o[${output%%:*}]="${output##*: }"
done
# Boucle principale
while [[ -n "$COPROC_PID" ]]
do
# Gestion du clic, fait office de délai si aucune action (une seconde).
# En cas de clic, lactualisation de laffichage sera instantanné.
read -t 1 BLOCK_BUTTON
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case $BLOCK_BUTTON in
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1|3)
if [[ "${o["state"]}" == stop ]]
then
echo "play" >&${IN} || self-reset
sed '/^OK$/q' <&$OUT &>/dev/null
fi
;;
2)
if [[ "${o["state"]}" == stop ]]
then
echo "play" >&${IN} || self-reset
else
echo "pause" >&${IN} || self-reset
fi
;;
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1) echo "previous" >&${IN} || self-reset ;;&
3) echo "next" >&${IN} || self-reset ;;&
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1|2|3) sed '/^OK$/q' <&$OUT &>/dev/null ;;
esac
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# Réinitialisation de létat
unset o
declare -A o
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# Récupération de létat
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echo "status" >&$IN || self-reset
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while read -t 1 -u $OUT output
do
[[ "$output" == "OK" ]] && break
o[${output%%:*}]="${output##*: }"
done
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# Récupération des informations du morceau en cours
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echo "currentsong" >&$IN || self-reset
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while read -t 1 -u $OUT output
do
[[ "$output" == "OK" ]] && break
o[${output%%:*}]="${output##*: }"
done
# Choix des couleurs selon létat
case "${o["state"]}" in
play ) status="<span foreground=\"#99CC99\">" ;;
pause ) status="<span foreground=\"#FFCC66\">" ;;
stop ) status="<span foreground=\"#F2777A\">" ;;
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esac
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# En cas de changement de morceau,
# on réinitialise laffichage défilant
if [[ "${o["file"]}" != "$oldfile" ]]
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then
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unset bloc1 bloc2 bloc3 bloc4
artist="${o["Artist"]:-${o["Name"]}}"
song="${o["Title"]}"
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[[ -z "$artist$song" ]] && song="$(basename "${o["file"]}")"
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if [[ "$(( ${#song} + ${#artist} + 1 ))" -gt "$SCROLL" ]]
then
scroll=true
song=" $song "
else
scroll=false
song=" $song"
fi
bloc1="$artist"
bloc2="$song"
oldfile="${o["file"]}"
I=0
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fi
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# Gestion du défilement
if "$scroll"
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then
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unset bloc1 bloc2 bloc3 bloc4
declare -- bloc1 bloc2 bloc3 bloc4
bloc1="${artist:$I:$SCROLL}"
if [[ "${#bloc1}" -eq 0 ]]
then
bloc2="${song:$(( I - ${#artist} )):$SCROLL}"
if [[ "$(( ${#bloc1} + ${#bloc2} ))" -lt "$SCROLL" ]]
then
bloc3="${artist:0:$(( SCROLL - ${#bloc2} ))}"
if [[ "$(( ${#bloc1} + ${#bloc2} + ${#bloc3} ))" -lt "$SCROLL" ]]
then
bloc4="${song:0:$(( SCROLL - ${#bloc1} - ${#bloc2} - ${#bloc3} ))}"
fi
fi
else
bloc2="${song:0:$(( SCROLL - ${#bloc1} ))}"
if [[ "$(( ${#bloc1} + ${#bloc2} ))" -lt "$SCROLL" ]]
then
bloc3="${artist:0:$(( SCROLL - ${#bloc2} - ${#bloc1} ))}"
fi
fi
I+=1
[[ "$I" -ge "$(( ${#artist} + ${#song} ))" ]] && I=0
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fi
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# Gestion du temps
time_elapsed=$(human_time "${o["time"]%:*}")
time_total=$(human_time "${o["time"]#*:}")
time_left=$(human_time "$(( ${o["time"]#*:} - ${o["time"]%:*} ))")
time="[${time_elapsed:---:--} ${time_left:---:--} ${time_total:---:--}]"
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# DEBUG
printf '<b>%s</b>%s<b>%s</b>%s%s\n' "$bloc1" "$bloc2" "$bloc3" "$bloc4" " $status$time</span>"
done
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done