Get paths of included feature files in a ufo file.

getIncludedFeautreFilesPaths.py

from fontTools.feaLib.ast import IncludeStatement
from fontTools.feaLib.parser import Parser
from io import StringIO
import os
from pathlib import PurePath
"""
Get paths of included feature files in a ufo file.
This script makes an assumption feature are written inside the `ufo.features.text`.
Features could be written inside another file that could exist next to the UFO
package (instead of inside the UFO package). This script doesn't support that yet.
"""

def getIncludedFeautreFilesPaths(f, absolutePaths=True):
	"""
	If absoulutePaths is True, the abs path of the included files will be returned.
	"""
	ufoPath = f.path
	ufoName = PurePath(ufoPath).stem
	ufoRoot = PurePath(ufoPath).parent
	featxt = f.features.text or ""
	buf = StringIO(featxt)
	buf.name = os.path.join(ufoPath, "features.fea")
	parser = Parser(buf, set(f.keys()), followIncludes=False)
	includeFiles = set()
	for s in parser.parse().statements:
		if type(s) is IncludeStatement:
			path = os.path.join(ufoRoot, s.filename)
			normalPath = os.path.normpath(path)
			if os.path.exists(normalPath):
				if absolutePaths:
					includeFiles.add(normalPath)
				else:
					includeFiles.add(s.filename)
			else:
				print(f"{ufoName} | Feature file doesn't exist in:\n{normalPath}")
	return includeFiles

if __name__ == '__main__':
	# works in RF
	f = CurrentFont()
	for f in getIncludedFeautreFilesPaths(f):
		print(f)