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73 lines
No EOL
2 KiB
Bash
Executable file
73 lines
No EOL
2 KiB
Bash
Executable file
#!/bin/bash
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# Run as follows: ./scrolling_title.sh mystring
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# It will look for "mystring" in all active windows and display the window title that includes this string.
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# Case sensitive!
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# Limit for scrolling text
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LIMIT=30
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#SEPERATOR=" --- "
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#SEPERATOR=" -- "
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#SEPERATOR=" ~~~ "
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SEPERATOR=" ~~ "
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#SEPERATOR=" <> "
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SEPERATOR_LENGTH="$(echo ${#SEPERATOR})"
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i=1
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while :
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do
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# For debugging purposes
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# printf "|%02d|" $i
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INPUT="$(wmctrl -l | grep -v "wmctrl" | grep -m 1 $1 | awk -v skipstart=3 -v skipend=0 '{delim = ""; for (i=skipstart+1;i<=NF-skipend;i++) {printf delim "%s", $i; delim = OFS};}')"
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# If the output has changed, start from the beginning
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if [[ "$INPUT" != "$OLD_INPUT" ]]; then
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i=1
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fi
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# Save old input for the next check
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OLD_INPUT="$(echo $INPUT)"
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# Optional: remove multibyte characters
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# (they dont show up properly while scrolling due to "cut -c" being identical to "cut -b")
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INPUT="$(echo $INPUT | tr -dc '[:print:]')"
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INPUT_LENGTH="$(echo ${#INPUT})"
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if [ $INPUT_LENGTH -le $LIMIT ]; then
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# Song has a smaller title than the limit, so no need to scroll.
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echo -n " "
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#echo -e -n "$INPUT"
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#Justify - left
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#SPACES=$(($LIMIT-$INPUT_LENGTH+1))
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#echo -n "$INPUT" | awk -v spaces=$SPACES '{printf "%s%*.s\n", $0, spaces, " "}'
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#Justify - center
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SPACES_AFTER=$(($LIMIT-$(((${#INPUT}+$LIMIT)/2))))
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printf "%*s\n" $(((${#INPUT}+$LIMIT)/2 + 1)) "$INPUT" | awk -v spaces=$SPACES_AFTER '{printf "%s%*.s\n", $0, spaces, " "}'
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else
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LOOPTAIL="$(echo $INPUT | cut -c -$LIMIT)"
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FULLSTRING="$(echo "$INPUT$SEPERATOR$LOOPTAIL")"
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echo -n " "
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# Show only LIMIT characters, from i to i+LIMIT. Output scrolls due to incrementing i
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echo -n $FULLSTRING | cut -c $i-$(($LIMIT+$i))
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#echo -n $FULLSTRING | awk -v charlimit="$LIMIT" -v start="$i" '{print substr($0,start,charlimit)}'
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# If we have shown the full string, start over
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if [ $i -eq $(($INPUT_LENGTH+$SEPERATOR_LENGTH)) ]; then
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i=0
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fi
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i=$(($i+1))
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fi
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# For fat bars/panels, I add this newline so the previous output is not visible
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echo ""
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sleep 1
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done |