106 lines
3.1 KiB
Python
Executable File
106 lines
3.1 KiB
Python
Executable File
#!/usr/bin/env python3
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# Pre-generates the expected output subset files (via fonttools) for
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# specified subset test suite(s).
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import os
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import sys
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import shutil
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import io
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import re
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import tempfile
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from difflib import unified_diff
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from fontTools.ttLib import TTFont
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from subprocess import check_call
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from subset_test_suite import SubsetTestSuite
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def usage():
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print("Usage: generate-expected-outputs.py hb-subset <test suite file> ...")
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def strip_check_sum (ttx_string):
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return re.sub ('checkSumAdjustment value=["]0x([0-9a-fA-F])+["]',
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'checkSumAdjustment value="0x00000000"',
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ttx_string, count=1)
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def generate_expected_output(input_file, unicodes, profile_flags, instance_flags, output_directory, font_name):
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input_path = input_file
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if instance_flags:
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instance_path = os.path.join(tempfile.mkdtemp (), font_name)
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args = ["fonttools", "varLib.instancer",
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"--no-overlap-flag",
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"--no-recalc-bounds",
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"--no-recalc-timestamp",
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"--output=%s" % instance_path,
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input_file]
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args.extend(instance_flags)
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check_call(args)
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input_path = instance_path
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fonttools_path = os.path.join(tempfile.mkdtemp (), font_name)
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args = ["fonttools", "subset", input_path]
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args.extend(["--drop-tables+=DSIG",
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"--drop-tables-=sbix",
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"--no-harfbuzz-repacker", # disable harfbuzz repacker so we aren't comparing to ourself.
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"--unicodes=%s" % unicodes,
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"--output-file=%s" % fonttools_path])
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args.extend(profile_flags)
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check_call(args)
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with io.StringIO () as fp:
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with TTFont (fonttools_path) as font:
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font.saveXML (fp)
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fonttools_ttx = strip_check_sum (fp.getvalue ())
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harfbuzz_path = os.path.join(tempfile.mkdtemp (), font_name)
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args = [
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hb_subset,
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"--font-file=" + input_file,
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"--output-file=" + harfbuzz_path,
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"--unicodes=%s" % unicodes,
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"--drop-tables+=DSIG",
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"--drop-tables-=sbix"]
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args.extend(profile_flags)
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if instance_flags:
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args.extend(["--instance=%s" % ','.join(instance_flags)])
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check_call(args)
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with io.StringIO () as fp:
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with TTFont (harfbuzz_path) as font:
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font.saveXML (fp)
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harfbuzz_ttx = strip_check_sum (fp.getvalue ())
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if harfbuzz_ttx != fonttools_ttx:
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for line in unified_diff (fonttools_ttx.splitlines (1), harfbuzz_ttx.splitlines (1), fonttools_path, harfbuzz_path):
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sys.stdout.write (line)
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sys.stdout.flush ()
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raise Exception ('ttx for fonttools and harfbuzz does not match.')
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output_path = os.path.join(output_directory, font_name)
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shutil.copy(harfbuzz_path, output_path)
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args = sys.argv[1:]
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if not args:
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usage()
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hb_subset, args = args[0], args[1:]
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if not args:
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usage()
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for path in args:
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with open(path, mode="r", encoding="utf-8") as f:
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test_suite = SubsetTestSuite(path, f.read())
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output_directory = test_suite.get_output_directory()
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print("Generating output files for %s" % output_directory)
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for test in test_suite.tests():
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unicodes = test.unicodes()
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font_name = test.get_font_name()
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print("Creating subset %s/%s" % (output_directory, font_name))
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generate_expected_output(test.font_path, unicodes, test.get_profile_flags(),
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test.get_instance_flags(), output_directory, font_name)
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