HarfBuzz text shaping engine
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132 lines
3.9 KiB
132 lines
3.9 KiB
#!/usr/bin/env python3 |
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# Runs a subsetting test suite. Compares the results of subsetting via harfbuzz |
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# to subsetting via fonttools. |
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from difflib import unified_diff |
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import os |
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import re |
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import subprocess |
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import sys |
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import tempfile |
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import shutil |
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import io |
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from subset_test_suite import SubsetTestSuite |
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try: |
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from fontTools.ttLib import TTFont |
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except ImportError: |
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print ("fonttools is not present, skipping test.") |
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sys.exit (77) |
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ots_sanitize = shutil.which ("ots-sanitize") |
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def cmd (command): |
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p = subprocess.Popen ( |
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command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, |
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universal_newlines=True) |
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(stdoutdata, stderrdata) = p.communicate () |
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print (stderrdata, end="", file=sys.stderr) |
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return stdoutdata, p.returncode |
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def fail_test (test, cli_args, message): |
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print ('ERROR: %s' % message) |
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print ('Test State:') |
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print (' test.font_path %s' % os.path.abspath (test.font_path)) |
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print (' test.profile_path %s' % os.path.abspath (test.profile_path)) |
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print (' test.unicodes %s' % test.unicodes ()) |
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expected_file = os.path.join (test_suite.get_output_directory (), |
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test.get_font_name ()) |
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print (' expected_file %s' % os.path.abspath (expected_file)) |
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return 1 |
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def run_test (test, should_check_ots): |
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out_file = os.path.join (tempfile.mkdtemp (), test.get_font_name () + '-subset' + test.get_font_extension ()) |
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cli_args = [hb_subset, |
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"--font-file=" + test.font_path, |
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"--output-file=" + out_file, |
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"--unicodes=%s" % test.unicodes (), |
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"--drop-tables+=DSIG", |
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"--drop-tables-=sbix"] |
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cli_args.extend (test.get_profile_flags ()) |
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print (' '.join (cli_args)) |
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_, return_code = cmd (cli_args) |
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if return_code: |
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return fail_test (test, cli_args, "%s returned %d" % (' '.join (cli_args), return_code)) |
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expected_ttx = io.StringIO () |
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try: |
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with TTFont (os.path.join (test_suite.get_output_directory (), test.get_font_name ())) as font: |
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font.saveXML (expected_ttx) |
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except Exception as e: |
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print (e) |
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return fail_test (test, cli_args, "ttx failed to parse the expected result") |
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actual_ttx = io.StringIO () |
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try: |
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with TTFont (out_file) as font: |
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font.saveXML (actual_ttx) |
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except Exception as e: |
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print (e) |
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return fail_test (test, cli_args, "ttx failed to parse the actual result") |
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expected_ttx_text = strip_check_sum (expected_ttx.getvalue ()) |
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expected_ttx.close () |
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actual_ttx_text = strip_check_sum (actual_ttx.getvalue ()) |
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actual_ttx.close () |
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if not actual_ttx_text == expected_ttx_text: |
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for line in unified_diff (expected_ttx_text.splitlines (1), actual_ttx_text.splitlines (1)): |
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sys.stdout.write (line) |
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sys.stdout.flush () |
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return fail_test (test, cli_args, 'ttx for expected and actual does not match.') |
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if should_check_ots: |
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print ("Checking output with ots-sanitize.") |
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if not check_ots (out_file): |
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return fail_test (test, cli_args, 'ots for subsetted file fails.') |
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return 0 |
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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 has_ots (): |
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if not ots_sanitize: |
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print ("OTS is not present, skipping all ots checks.") |
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return False |
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return True |
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def check_ots (path): |
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ots_report, returncode = cmd ([ots_sanitize, path]) |
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if returncode: |
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print ("OTS Failure: %s" % ots_report) |
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return False |
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return True |
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args = sys.argv[1:] |
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if not args or sys.argv[1].find ('hb-subset') == -1 or not os.path.exists (sys.argv[1]): |
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sys.exit ("First argument does not seem to point to usable hb-subset.") |
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hb_subset, args = args[0], args[1:] |
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if not len (args): |
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sys.exit ("No tests supplied.") |
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has_ots = has_ots() |
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fails = 0 |
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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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print ("Running tests in " + path) |
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test_suite = SubsetTestSuite (path, f.read ()) |
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for test in test_suite.tests (): |
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fails += run_test (test, has_ots) |
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if fails != 0: |
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sys.exit ("%d test(s) failed." % fails) |
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else: |
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print ("All tests passed.")
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