It looks like nobody here knows of one.
For a one-off I have used a spreadsheet for this. Text-to-columns then insert columns full of G-codes and coordinates, then re-export as space-delimited.
It's probably easy in Perl too. Or create a little Python file, something like this. (untested, just to give a feel)
Code:
#!/usr/bin/python
import re
import sys
import shutil
filename = sys.argv[1:]:
if not os.path.isfile(opt):
{Error message here}
sys.exit()
file = open(filename,'r').read()
file=re.sub("(\d*\.*\d*),(\d*\.*\d*)", "G0 X$1 Y$2", file,flags=re.M)
newfile = open("filename"+& ".ngc")
newfile.write(file)
filename.close()
newfile.close()
You can experiment with the RegEx I used here:
regexr.com/3h8md
