command-line converter DXF to PDF using QCAD

dxf2pdf.js

// Converting DXF file to PDF without GUI
// Usage:
//    qcad -autostart dxf2pdf.js <in_file> <out_file>
//
//                 V.Zavjalov, 03.07.2020, GLP-3.0

include("scripts/simple.js");
include("scripts/File/Print/Print.js");

function main() {

  if (args.length != 3) {
    print("Usage: qcad -autostart " + args[0] + " <in_file> <out_file>");
    return;
  }

  var i_file = getAbsolutePathForArg(args[1]);
  var o_file = getAbsolutePathForArg(args[2]);

  // create a document:
  var doc = createOffScreenDocument();

  // read DXF
  var di = new RDocumentInterface(doc);
  di.importFile(i_file);

  // make view
  var scene = new RGraphicsSceneQt(di);
  var view = new RGraphicsViewImage();
  view.setScene(scene);

  // write PDF
  var pr = new Print(undefined, doc, view);
  pr.print(o_file);
}

main();

Converter script:

#!/bin/sh -efu

if [ $# -ne 2 ]; then
  printf "Usage $0 <in_file> <out_file>\n"
  exit 1
fi

XDG_RUNTIME_DIR=$(pwd)\
  qcad -no-dock-icon -no-gui -allow-multiple-instances -autostart @SCRIPTDIR@/dxf2pdf.js "$1" "$2"

See also Altlinux package: http://git.altlinux.org/people/slazav/packages/?p=qcad-dxf2pdf.git