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