"""update_mk.py - Update meta-kernel to set absolute paths

Create a new meta-kernel file, by replacing relative PATH_VALUES of kernels root dir
with absolute path, so the meta-kernels file can be used from anywhere in the directory tree.
"""

import	os
import	re

INPUT_FILE = "kernels/mk/solo_ANC_soc-flown-mk.tm"

OUTPUT_FILE = "kernels/meta-kernel.irap.tm"

def	update_meta_kernel ():
	"""
	Search line like :

		PATH_VALUES = ( '..' )

	Replace with :

		PATH_VALUES = ( os.getenv ("SPICE_DIR") )
	"""
	expr = re.compile ("\s*PATH_VALUES.*\([^)]*\).*")

	replace = "( '%s' )" % os.getenv ("SPICE_DIR")

	with open (OUTPUT_FILE, "w") as output :

		for line in open (INPUT_FILE):

			r = expr.match (line)

			if r:
				line = re.sub ("\([^)]*\)", replace, line)
		
			print (line, end = "", file = output)		

	print ("Generation", OUTPUT_FILE)


if __name__ == "__main__":

	update_meta_kernel ()