Convert image to svg (wrap image with svg) (embed image to svg) (jpg, png, gif... etc)

bitmap2svg.sh

#!/bin/bash

# Wrap image with svg and output the svg file

#### Options
svgwidth=''
svgheight=''
imgwidth=''
imgheight=''
############

# Reading passed options from stdin
while getopts "w:h:W:H:" OPTION
do
  case $OPTION in
    w)
      imgwidth="$OPTARG"
      ;;
    h)
      imgheight="$OPTARG"
      ;;
    W)
      svgwidth="$OPTARG"
      ;;
    H)
      svgheight="$OPTARG"
      ;;
    v)
      verbose=1
      ;;
    \?)
      echo -e '\e[37;34m'"\e[1m[notice]\e[0m" "Invalid options" >&2
      exit 1
      ;;
    :)
      echo -e '\e[37;34m'"\e[1m[notice]\e[0m" "Option -$OPTARG requires an argument" >&2
      exit 1
      ;;
  esac
done
shift $(($OPTIND -1))

exec="$(basename "$0")"; [[ "$exec" ]] || exec="${0##*/}"
printhelp() {
cat <<EOF
    $exec [-w IMAGE-WIDTH] [-h IMAGE-HEIGHT] [-W SVG-WIDTH] [-H SVG-HEIGHT] FILE.JPG
    
    -w  <int>   Specify image width in pixels
    -h  <int>   Specify image height in pixels
    -W  <int>   Specify svg width in pixels
    -H  <int>   Specify svg width in pixels
    
    e.g.:
      $exec file.jpg
        Width and height will be used from image if not set
        
      $exec -w 1024 -h 768 file.jpg
        This will produce file.svg, svg and image size will be: 1024px * 768px.
        
      $exec -W 1024 -H 768 file.jpg
        This will produce file.svg, svg will be: 1024px * 768px.
        Image size will be taken from the image
EOF
}
if [[ "$#" -lt "1" ]]; then
    printhelp
    exit 1
fi

# Function
function b2s() {
    # exit if no such file
    if ! [[ -f "$1" ]]; then
        echo -e '\e[37;31m'"\e[1m[error]\e[0m" "There is no such file: '$1'" >&2
        exit 1
    fi
    # get size of image
    imgpixelsize="$(identify -format '%w %h' "$1")"
    # get mime type of image
    mime="$(file -i "$1" | grep -m1 -o -P ':\s(.*);' | awk -F ": " '{print $2}')"
    # get quantities:
    #  if no imgwidth was specified set it to width of image
    iwidth="${imgwidth:-${imgpixelsize%% *}}"
    #  if no imgheight was specified set it to height of image
    iheight="${imgheight:-${imgpixelsize#* }}"
    #  if no svgwidth was specified set it to width of image
    swidth="${svgwidth:-$iwidth}"
    #  if no svgheight was specified set it to height of image
    sheight="${svgheight:-$iheight}"
    
    # test if we got integers
    re='^[0-9]+$'
    for int in $iwidth $iheight $swidth $sheight; do
        if ! [[ $int =~ $re ]] ; then
           echo '\e[37;31m'"\e[1m[error]\e[0m" "'${int}' Not a number" >&2
           exit 1
        fi
    done
    # get X offset to center the image horizontally
    [[ $swidth -gt $iwidth ]] && xoffset=$((($swidth-$iwidth)/2)) || xoffset=0
    
    # Now wrap image with svg and output to svg file:
    {
    #  print svg
cat <<EOF
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg
   width="$swidth"
   height="$sheight"
   viewBox="0 0 $swidth $sheight"
   version="1.1"
   id="svgimg"
   xml:space="preserve"
   xmlns:xlink="http://www.w3.org/1999/xlink"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:svg="http://www.w3.org/2000/svg"><defs
     id="defs2" /><g
     id="layer1"
     transform="translate($xoffset)"><image
       width="$iwidth"
       height="$iheight"
       preserveAspectRatio="yes"
EOF
    #   print base64 encoded image
echo "       xlink:href=\"data:${mime%;};base64,$(base64 "${1}")"
    #   continue print svg
echo "\""
cat <<EOF
       id="image"
       x="0"
       y="0"
       style="image-rendering:optimizeQuality" /></g></svg>
EOF
    }>"${1%.*}.svg"
}

# Run function
for i in "${@}"; do
    b2s "$i"
done