Convert DWG to DXF using Teigha in batch

sh-dwgtodxf.sh

#!/bin/bash

# To execute in batch mode
# find . -iname "*.dwg" -print0 | xargs -0 -I {} ./sh-dwgtodxf.sh -i "{}"
 
TEIGHA="/Applications/TeighaFileConverter.app/Contents/MacOS/TeighaFileConverter"
OUTVER="ACAD2004"
OUTFORMAT="DXF"
RECURSIVE="0"
AUDIT="1"
INPUTFILTER="*.DWG"

while getopts ":i:" opt; do
  case $opt in
    i)
      echo "-i was triggered, Parameter: $OPTARG" >&2
      FILENAME=${OPTARG##*/}
      PATHNAME=`dirname "$OPTARG"`
      FILE=${FILENAME%.*}
      echo "Working on $PATHNAME/$FILENAME"
      mkdir "temp"
      cp "$OPTARG" "temp/$FILENAME"
      /Applications/TeighaFileConverter.app/Contents/MacOS/TeighaFileConverter temp/ temp/ $OUTVER $OUTFORMAT $RECURSIVE $AUDIT $INPUTFILTER
      cp "temp/$FILE.dxf" "$PATHNAME/" 
      rm -rf "temp/"
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      exit 1
      ;;
    :)
      echo "Option -$OPTARG requires an argument." >&2
      exit 1
      ;;
  esac
done

# Command Line Format for Teigha is:
#   Quoted Input Folder
#   Quoted Output Folder
#   Output_version
#     {"ACAD9","ACAD10","ACAD12",
#      "ACAD13","ACAD14",
#      "ACAD2000","ACAD2004",
#      "ACAD2007","ACAD2010",
#      "ACAD2013","ACAD2018"}
#   Output File type
#     {"DWG","DXF","DXB"}
#   Recurse Input Folder
#     {"0","1"}
#   Audit each file
#     {"0","1"}
#   [optional] Input files filter
#     (default: "*.DWG;*.DXF")