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scrolling text now handles short strings by justifying them (center)

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elena 2017-09-28 20:32:01 +03:00
parent bc346bc763
commit bf71bc0ad2
2 changed files with 46 additions and 25 deletions
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46
Scripts/scrolling_text.sh Executable file
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@ -0,0 +1,46 @@
# Scrolling text
LIMIT=12
SEPERATOR=" ~~~ "
SEPERATOR_LENGTH="$(echo ${#SEPERATOR})"
i=1
while :
do
# Get input and create the full string that will be used
INPUT="$@"
INPUT_LENGTH="$(echo ${#INPUT})"
LOOPTAIL="$(echo $INPUT | cut -c -$LIMIT)"
FULLSTRING="$(echo "$INPUT$SEPERATOR$LOOPTAIL")"
if [ $INPUT_LENGTH -le $LIMIT ]; then
# Song has a smaller title than the limit, so no need to scroll.
echo -n "  "
#echo -e -n "$INPUT"
#Justify - left
#SPACES=$(($LIMIT-$INPUT_LENGTH+1))
#echo -n "$INPUT" | awk -v spaces=$SPACES '{printf "%s%*.s\n", $0, spaces, " "}'
#Justify - center
SPACES_AFTER=$(($LIMIT-$(((${#INPUT}+$LIMIT)/2))))
printf "%*s\n" $(((${#INPUT}+$LIMIT)/2 + 1)) "$INPUT" | awk -v spaces=$SPACES_AFTER '{printf "%s%*.s\n", $0, spaces, " "}'
else
LOOPTAIL="$(echo $INPUT | cut -c -$LIMIT)"
FULLSTRING="$(echo "$INPUT$SEPERATOR$LOOPTAIL")"
echo -n "  "
# Show only LIMIT characters, from i to i+LIMIT. Output scrolls due to incrementing i
echo -n $FULLSTRING | cut -c $i-$(($LIMIT+$i))
#echo -n $FULLSTRING | awk -v charlimit="$LIMIT" -v start="$i" '{print substr($0,start,charlimit)}'
# If we have shown the full string, start over
if [ $i -eq $(($INPUT_LENGTH+$SEPERATOR_LENGTH)) ]; then
i=0
fi
i=$(($i+1))
fi
sleep 1
done

25
Scripts/scrollingtext.sh
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@ -1,25 +0,0 @@
# Scrolling text v2
LIMIT=12
SEPERATOR=" ~~~ "
SEPERATOR_LENGTH="$(echo ${#SEPERATOR})"
i=1
while :
do
# Get input and create the full string that will be used
INPUT="$@"
INPUT_LENGTH="$(echo ${#INPUT})"
LOOPTAIL="$(echo $INPUT | cut -c -$LIMIT)"
FULLSTRING="$(echo $INPUT | sed "s/$/$SEPERATOR/" | sed "s/$/$LOOPTAIL/" )"
# Show only LIMIT characters. Output scrolls due to incrementing i
echo -n $FULLSTRING | cut -c $i-$(($LIMIT+$i))
# If we have shown the full string, start over
if [ $i -eq $(($INPUT_LENGTH+$SEPERATOR_LENGTH)) ]; then
i=0
fi
i=$(($i+1))
sleep 1
done