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################################################################################
# catimg script by Eduardo San Martin Morote aka Posva #
# http://posva.net #
# #
# Ouput the content of an image to the stdout using the 256 colors of the #
# terminal. #
# Github: https://github.com/posva/catimg #
################################################################################
function help() {
echo "Usage catimg [-h] [-w width] [-c char] img"
echo "By default char is \" \" and w is the terminal width"
}
# VARIABLES
COLOR_FILE=$(dirname $0)/colors.png
CHAR=" "
WIDTH=""
IMG=""
while getopts qw:c:h opt; do
case "$opt" in
w) WIDTH="$OPTARG" ;;
c) CHAR="$OPTARG" ;;
h) help; exit ;;
*) help ; exit 1;;
esac
done
while [ "$1" ]; do
IMG="$1"
shift
done
if [ "$IMG" = "" -o ! -f "$IMG" ]; then
help
exit 1
fi
if [ ! "$WIDTH" ]; then
COLS=$(expr $(tput cols) "/" $(echo -n "$CHAR" | wc -c))
else
COLS=$(expr $WIDTH "/" $(echo -n "$CHAR" | wc -c))
fi
WIDTH=$(convert "$IMG" -print "%w\n" /dev/null)
if [ "$WIDTH" -gt "$COLS" ]; then
WIDTH=$COLS
fi
REMAP=""
if convert "$IMG" -resize $COLS\> +dither -remap $COLOR_FILE /dev/null ; then
REMAP="-remap $COLOR_FILE"
else
echo "The version of convert is too old, don't expect good results :(" >&2
#convert "$IMG" -colors 256 PNG8:tmp.png
#IMG="tmp.png"
fi
# Display the image
I=0
convert "$IMG" -resize $COLS\> +dither `echo $REMAP` txt:- 2>/dev/null |
sed -e 's/.*none.*/NO NO NO/g' -e '1d;s/^.*(\(.*\)[,)].*$/\1/g;y/,/ /' |
while read R G B f; do
if [ ! "$R" = "NO" ]; then
if [ "$R" -eq "$G" -a "$G" -eq "$B" ]; then
((
I++,
IDX = 232 + R * 23 / 255
))
else
((
I++,
IDX = 16
+ R * 5 / 255 * 36
+ G * 5 / 255 * 6
+ B * 5 / 255
))
fi
#echo "$R,$G,$B: $IDX"
echo -ne "\e[48;5;${IDX}m${CHAR}"
else
(( I++ ))
echo -ne "\e[0m${CHAR}"
fi
# New lines
(( $I % $WIDTH )) || echo -e "\e[0m"
done
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