kc3-lang/harfbuzz/test/subset/generate-expected-outputs.py

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• Hash : 15a05b24
  Author :
  Date : 2024-03-27T18:26:09
  

  [subset] Update generate-expected-outputs to drop BASE.
  
  This matches the behaviour of the test runner.
  

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• test/subset/generate-expected-outputs.py

• #!/usr/bin/env python3
  
  # Pre-generates the expected output subset files (via fonttools) for
  # specified subset test suite(s).
  
  import os
  import sys
  import shutil
  import io
  import re
  import tempfile
  
  from difflib import unified_diff
  from fontTools.ttLib import TTFont
  
  from subprocess import check_call
  from subset_test_suite import SubsetTestSuite
  
  
  def usage():
  	print("Usage: generate-expected-outputs.py hb-subset <test suite file> ...")
  
  
  def strip_check_sum (ttx_string):
  	return re.sub ('checkSumAdjustment value=["]0x([0-9a-fA-F])+["]',
  		       'checkSumAdjustment value="0x00000000"',
  		       ttx_string, count=1)
  
  
  def generate_expected_output(input_file, unicodes, profile_flags, instance_flags, iup_optimize, output_directory, font_name, no_fonttools):
  	input_path = input_file
  	if not no_fonttools and instance_flags:
  		instance_path = os.path.join(tempfile.mkdtemp (), font_name)
  		args = ["fonttools", "varLib.instancer",
  			"--no-overlap-flag",
  			"--no-recalc-timestamp"]
  		if not iup_optimize:
  			args.extend(["--no-optimize",])
  		args.extend(["--output=%s" % instance_path,
  			    input_file])
  		args.extend(instance_flags)
  		check_call(args)
  		input_path = instance_path
  
  	fonttools_path = os.path.join(tempfile.mkdtemp (), font_name)
  	args = ["fonttools", "subset", input_path]
  	if instance_flags:
  		args.extend(["--recalc-bounds", "--recalc-average-width"])
  	args.extend(["--drop-tables+=DSIG,BASE",
  		     "--drop-tables-=sbix",
  		     "--no-harfbuzz-repacker", # disable harfbuzz repacker so we aren't comparing to ourself.
  		     "--output-file=%s" % fonttools_path])
  	if unicodes != "":
  		args.extend(["--unicodes=%s" % unicodes,])
  
  	# --gid-map is unsupported in fonttools so don't send it. Tests using
  	# it are crafted to work without fonttools knowing about the flag.
  	args.extend([f for f in profile_flags if not f.startswith("--gid-map")])
  	# Harfbuzz doesn't support pruning codepage ranges, so disable it in fonttools.
  	args.extend(["--no-prune-codepage-ranges"])
  	if not no_fonttools:
  		check_call(args)
  
  		with io.StringIO () as fp:
  			with TTFont (fonttools_path) as font:
  				font.saveXML (fp)
  				fonttools_ttx = strip_check_sum (fp.getvalue ())
  
  	harfbuzz_path = os.path.join(tempfile.mkdtemp (), font_name)
  	args = [
  		hb_subset,
  		"--font-file=" + input_file,
  		"--output-file=" + harfbuzz_path,
  		"--drop-tables+=DSIG,BASE",
  		"--drop-tables-=sbix"]
  	if unicodes != "":
  		args.extend(["--unicodes=%s" % unicodes,])
  	args.extend(profile_flags)
  	if instance_flags:
  		args.extend(["--instance=%s" % ','.join(instance_flags)])
  	if iup_optimize:
  		args.extend(["--optimize",])
  	check_call(args)
  
  	with io.StringIO () as fp:
  		with TTFont (harfbuzz_path) as font:
  			font.saveXML (fp)
  		harfbuzz_ttx = strip_check_sum (fp.getvalue ())
  
  	if not no_fonttools and harfbuzz_ttx != fonttools_ttx:
  		for line in unified_diff (fonttools_ttx.splitlines (1), harfbuzz_ttx.splitlines (1), fonttools_path, harfbuzz_path):
  			sys.stdout.write (line)
  		sys.stdout.flush ()
  		raise Exception ('ttx for fonttools and harfbuzz does not match.')
  
  	output_path = os.path.join(output_directory, font_name)
  	shutil.copy(harfbuzz_path, output_path)
  
  
  args = sys.argv[1:]
  if not args:
  	usage()
  hb_subset, args = args[0], args[1:]
  if not args:
  	usage()
  
  for path in args:
  	with open(path, mode="r", encoding="utf-8") as f:
  		test_suite = SubsetTestSuite(path, f.read())
  		output_directory = test_suite.get_output_directory()
  
  		print("Generating output files for %s" % output_directory)
  		for test in test_suite.tests():
  			unicodes = test.unicodes()
  			font_name = test.get_font_name()
  			no_fonttools = ("no_fonttools" in test.options)
  			print("Creating subset %s/%s" % (output_directory, font_name))
  			generate_expected_output(test.font_path, unicodes, test.get_profile_flags(),
  						 test.get_instance_flags(), test.iup_optimize, output_directory, font_name, no_fonttools=no_fonttools)
  

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