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