mirror of
https://github.com/sbrl/bin.git
synced 2018-01-10 21:33:46 +00:00
130 lines
3.1 KiB
Text
130 lines
3.1 KiB
Text
|
#!/usr/bin/env bash
|
|||
|
|
|||
|
################################################################################
|
|||
|
# 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 #
|
|||
|
################################################################################
|
|||
|
|
|||
|
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 "$0")/catimg-ext-colors.png
|
|||
|
CHAR=" "
|
|||
|
|
|||
|
WIDTH=""
|
|||
|
IMG=""
|
|||
|
LOOP=""
|
|||
|
|
|||
|
while getopts w:c:l:h opt; do
|
|||
|
case "$opt" in
|
|||
|
w) WIDTH="$OPTARG" ;;
|
|||
|
c) CHAR="$OPTARG" ;;
|
|||
|
h) help; exit ;;
|
|||
|
l) LOOP="$OPTARG" ;;
|
|||
|
*) 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 = $(tput cols) / $(echo -n "$CHAR" | wc -c) ))
|
|||
|
else
|
|||
|
(( COLS = WIDTH / $(echo -n "$CHAR" | wc -c) ))
|
|||
|
fi
|
|||
|
WIDTH=$(convert "$IMG" -print "%w\n" /dev/null)
|
|||
|
if [ "$WIDTH" -gt "$COLS" ]; then
|
|||
|
WIDTH=$COLS
|
|||
|
fi
|
|||
|
|
|||
|
if ! convert "$IMG" -resize "${COLS}>" +dither -remap "${COLOR_FILE}" /dev/null ; then
|
|||
|
echo "The version of convert is too old, don't expect good results :(" >&2
|
|||
|
fi
|
|||
|
|
|||
|
# produce terminal color from rgb value
|
|||
|
# term_color r g b
|
|||
|
term_color() {
|
|||
|
local r g b
|
|||
|
r="$1"
|
|||
|
g="$2"
|
|||
|
b="$3"
|
|||
|
if [ "$r" -eq "$g" -a "$g" -eq "$b" ]; then
|
|||
|
((
|
|||
|
IDX = 232 + r * 23 / 255
|
|||
|
))
|
|||
|
else
|
|||
|
# the * 36 at the end is intended, it gives better results
|
|||
|
((
|
|||
|
IDX = 16
|
|||
|
+ r * 5 / 255 * 36
|
|||
|
+ g * 5 / 255 * 6
|
|||
|
+ b * 5 / 255
|
|||
|
))
|
|||
|
fi
|
|||
|
}
|
|||
|
|
|||
|
# Display the image
|
|||
|
L=0
|
|||
|
if [ ! "$LOOP" ]; then
|
|||
|
LOOP=1
|
|||
|
fi
|
|||
|
IMAGE="" # Stored image, used when looping
|
|||
|
|
|||
|
I=0
|
|||
|
while [[ "$L" -lt "${LOOP}" || "${LOOP}" = 0 ]]; do
|
|||
|
IND=1 # for array storing
|
|||
|
convert "$IMG" -resize $COLS\> +dither -remap "${COLOR_FILE}" txt:- |
|
|||
|
sed -e 's/.*none.*/NO NO NO/g' -e '1d;s/^.*(\(.*\)[,)].*$/\1/g;y/,/ /' |
|
|||
|
while read R G B f; do
|
|||
|
(( I++ ))
|
|||
|
if [ "$R" = "#" ]; then
|
|||
|
echo -en "\033[${I}A" # Move up the cursor
|
|||
|
I=0
|
|||
|
elif [ ! "$R" = "NO" ]; then
|
|||
|
if [ "$LOOP" ]; then
|
|||
|
if [ ! "${PIXEL[IND]}" ]; then
|
|||
|
term_color "$R" "$G" "$B"
|
|||
|
#echo "$R,$G,$B: $IDX"
|
|||
|
PIXEL[IND]="[48;5;${IDX}m${CHAR}"
|
|||
|
fi
|
|||
|
echo -n "${PIXEL[IND]}"
|
|||
|
IMAGE="${IMAGE}${PIXEL[IND]}"
|
|||
|
(( IND++ ))
|
|||
|
#echo "IND = ${IND}"
|
|||
|
else
|
|||
|
term_color "$R" "$G" "$B"
|
|||
|
#echo "$R,$G,$B: $IDX"
|
|||
|
echo -n "[48;5;${IDX}m${CHAR}"
|
|||
|
IMAGE="${IMAGE}[48;5;${IDX}m${CHAR}"
|
|||
|
fi
|
|||
|
else
|
|||
|
echo -n "[m${CHAR}"
|
|||
|
IMAGE="${IMAGE}[m${CHAR}"
|
|||
|
fi
|
|||
|
# New lines
|
|||
|
(( K = I % WIDTH ))
|
|||
|
if [[ "$K" = 0 ]]; then
|
|||
|
echo "[m"
|
|||
|
IMAGE="${IMAGE}[m
|
|||
|
"
|
|||
|
fi
|
|||
|
done
|
|||
|
echo -en "\033[${I}A" # Move up the cursor
|
|||
|
((L++))
|
|||
|
done
|