junegunn/nyan_compressed.sh

## nyan_compressed.sh
#!/usr/bin/env bash

METANYAN="$(cat <<'EOT'
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5Lbb9Oxfv379D5cBOcrUGAEA
EOT
)"
eval $(echo $METANYAN | tr ' ' '\n' | base64 -D | gunzip)

declare -A COL
COL=([a]=16 [b]=24 [c]=196 [d]=82 [e]=208 [f]=226 [g]=63 [h]=200 [i]=33 [j]=246 [k]=222 [l]=213 [m]=231 [n]=210 [o]=-1)

declare -A PALETTE
PALETTE=([16]="0000/0000/0000"
         [24]="0000/3333/6666"
        [196]="FFFF/0000/0000"
         [82]="3333/FFFF/0000"
        [208]="FFFF/9999/0000"
        [226]="FFFF/FFFF/0000"
         [63]="6666/3333/FFFF"
        [200]="FFFF/3333/9999"
         [33]="0000/9999/FFFF"
        [246]="9999/9999/9999"
        [222]="FFFF/CCCC/9999"
        [213]="FFFF/9999/FFFF"
        [231]="FFFF/FFFF/FFFF"
        [210]="FFFF/9999/9999")

for color in ${COL[@]}; do
 echo -en "\033]4;$color;rgb:${PALETTE[$color]}\033\\"
done


PIXEL=" "
SAVECURSOR=$'\0337'
HIDECURSOR=$'\033[?25l'
RESTORECURSOR=$'\0338\033[?12;25h'
QUERYCURSOR=$'\033[6n'

LINES=$(tput lines)
COLUMNS=$(tput cols)
YOFFSET=$(((70-LINES)/2))
YOFFSET=$[ $YOFFSET > 0 ? $YOFFSET+1 : 0 ]
WIDTH=$((COLUMNS / 70 ))
for ((i=0; i<WIDTH; i++)); do
  CHAR+=${PIXEL}
done

CACHE=/tmp/NYANCAT
mkdir -p $CACHE

trap 'exit 1' INT TERM
trap 'rm -rf "${CACHE}"; echo -n $RESTORECURSOR' EXIT

#echo -n $HIDECURSOR

for ((y=YOFFSET; y<70-YOFFSET; y++)); do
  oldpixel=-1
  for ((x=0; x<70; x++)); do
    pixel=${NYAN[y]:x:1}
    if [[ $pixel == $oldpixel ]]; then
      echo -n "$CHAR"
    else
      echo -en "\033[0;48;5;${COL[${pixel}]}m$CHAR"
    fi
    oldpixel=$pixel
  done
  echo $'\033[0m'
done

stty -echo -icanon
echo -n $QUERYCURSOR 1>&2
read -s -dR POS
stty echo icanon

CURSORHOME=$((${POS:2:${#POS}-4} - y))
echo -n $SAVECURSOR

for ((f=1; f<=12; f++)); do
  for ((y=YOFFSET; y<70-YOFFSET; y++)); do
    stride=$((y+f*70))
    for ((x=0; x<70; x++)); do
      pixel=${NYAN[stride]:x:1}
      if [[ $pixel == o ]]; then
        continue
      else
        echo -en "\033[0$((CURSORHOME+y));$((x*WIDTH+1))H\033[0;48;5;${COL[${pixel}]}m$CHAR\033[0m" >> $CACHE/frame_${f}
      fi
      oldx=$x; oldy=$y
    done
  done
done
echo -n $RESTORECURSOR

while true; do
  for ((f=1; f<=12; f++)); do
    cat $CACHE/frame_${f}
    sleep 0.06
  done
done

## output.png

      
    Raw
  

              output.png
	#!/usr/bin/env bash

	METANYAN="$(cat <<'EOT'
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	5Lbb9Oxfv379D5cBOcrUGAEA
	EOT
	)"
	eval $(echo $METANYAN \| tr ' ' '\n' \| base64 -D \| gunzip)

	declare -A COL
	COL=([a]=16 [b]=24 [c]=196 [d]=82 [e]=208 [f]=226 [g]=63 [h]=200 [i]=33 [j]=246 [k]=222 [l]=213 [m]=231 [n]=210 [o]=-1)

	declare -A PALETTE
	PALETTE=([16]="0000/0000/0000"
	[24]="0000/3333/6666"
	[196]="FFFF/0000/0000"
	[82]="3333/FFFF/0000"
	[208]="FFFF/9999/0000"
	[226]="FFFF/FFFF/0000"
	[63]="6666/3333/FFFF"
	[200]="FFFF/3333/9999"
	[33]="0000/9999/FFFF"
	[246]="9999/9999/9999"
	[222]="FFFF/CCCC/9999"
	[213]="FFFF/9999/FFFF"
	[231]="FFFF/FFFF/FFFF"
	[210]="FFFF/9999/9999")

	for color in ${COL[@]}; do
	echo -en "\033]4;$color;rgb:${PALETTE[$color]}\033\\"
	done


	PIXEL=" "
	SAVECURSOR=$'\0337'
	HIDECURSOR=$'\033[?25l'
	RESTORECURSOR=$'\0338\033[?12;25h'
	QUERYCURSOR=$'\033[6n'

	LINES=$(tput lines)
	COLUMNS=$(tput cols)
	YOFFSET=$(((70-LINES)/2))
	YOFFSET=$[ $YOFFSET > 0 ? $YOFFSET+1 : 0 ]
	WIDTH=$((COLUMNS / 70 ))
	for ((i=0; i<WIDTH; i++)); do
	CHAR+=${PIXEL}
	done

	CACHE=/tmp/NYANCAT
	mkdir -p $CACHE

	trap 'exit 1' INT TERM
	trap 'rm -rf "${CACHE}"; echo -n $RESTORECURSOR' EXIT

	#echo -n $HIDECURSOR

	for ((y=YOFFSET; y<70-YOFFSET; y++)); do
	oldpixel=-1
	for ((x=0; x<70; x++)); do
	pixel=${NYAN[y]:x:1}
	if [[ $pixel == $oldpixel ]]; then
	echo -n "$CHAR"
	else
	echo -en "\033[0;48;5;${COL[${pixel}]}m$CHAR"
	fi
	oldpixel=$pixel
	done
	echo $'\033[0m'
	done

	stty -echo -icanon
	echo -n $QUERYCURSOR 1>&2
	read -s -dR POS
	stty echo icanon

	CURSORHOME=$((${POS:2:${#POS}-4} - y))
	echo -n $SAVECURSOR

	for ((f=1; f<=12; f++)); do
	for ((y=YOFFSET; y<70-YOFFSET; y++)); do
	stride=$((y+f*70))
	for ((x=0; x<70; x++)); do
	pixel=${NYAN[stride]:x:1}
	if [[ $pixel == o ]]; then
	continue
	else
	echo -en "\033[0$((CURSORHOME+y));$((x*WIDTH+1))H\033[0;48;5;${COL[${pixel}]}m$CHAR\033[0m" >> $CACHE/frame_${f}
	fi
	oldx=$x; oldy=$y
	done
	done
	done
	echo -n $RESTORECURSOR

	while true; do
	for ((f=1; f<=12; f++)); do
	cat $CACHE/frame_${f}
	sleep 0.06
	done
	done