Nemo Filemanager script to convert image to pdf with img2pdf with single or multiple file arguments

toPDF.sh

#!/bin/bash
# Description: This Nemo script uses img2pdf with single or multiple file arguments.
# script location: ~/.local/share/nemo/scripts/
# Resources:
# [img2pdf Homepage](https://gitlab.mister-muffin.de/josch/img2pdf)
# [img2pdf mirror on github](https://github.com/josch/img2pdf)
# Tags: img2pdf nemo-filemanager nemo-script

#arguments passed to img2pdf
myoptions="--pagesize A4 --fit shrink"

#creating temporary file for error/warning log if applies
logpath="$(mktemp /tmp/ns_toPDF.XXXXXX)"

argsIn=()
for f in "$@"; do
  #Lets test that inputs are all of image type
  fmime=$(file -b --mime-type "$f")
  if [ "${fmime%/*}" != "image" ]; then
    echo "Warning: $f is of type $fmime, only image type, ignoring" >> $logpath
  else
    argsIn+=("${f// /\ }")
  fi
done

if [ ${#argsIn[@]} -gt 0 ]; then
  # IFS set to <space><tab><newline> by default. `$ echo -n "$IFS" | hexdump -cC`
  #  to be able to pass filenames with spaces through sort we temporarily change it.
  prevIFS="$IFS"
  IFS=$'\n'
  # we sort them, passed through printf with newline separators, sort default separator
  srtdargs=($(printf "%s\n" "${argsIn[@]// /\ }" |sort))
  IFS="$prevIFS"
  # the path and extension from the first ordered arg
  outfile="${srtdargs[0]##*/}"
  outfile="${outfile%.*}"
  # if spaces we substitute the "bad habit" for underscores
  outfile="${outfile// /_}.pdf"
  # check if file exists to warn about overwriting
  if [ -f $outfile ]; then
    zenity --question --title="Warning : File already exists" --icon-name='dialog-warning' --no-wrap \
        --text="$outfile Already Exists \n Are you sure you want to replace ?"
  fi
  if [ $? -eq 0 ]; then
    #here is the actual execution of the command
    img2pdf $myoptions -o $outfile "${srtdargs[@]// /\ }" &>> $logpath
  fi
else
  echo "No files to process...they were probably filtered out" >> $logpath
fi
# if $logpath file exists and size is greater than 0, this script has something to say.
if [ -s $logpath ]; then
  zenity --text-info --width=600 --height=400 --title="Console Log" --filename=$logpath
fi