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import os
import argparse
import logging
import shutil
import multiprocessing as mp
from contextlib import closing
from functools import partial
import fontTools
from .ufo import font_to_quadratic, fonts_to_quadratic
ufo_module = None
try:
import ufoLib2 as ufo_module
except ImportError:
try:
import defcon as ufo_module
except ImportError as e:
pass
logger = logging.getLogger("fontTools.cu2qu")
def _cpu_count():
try:
return mp.cpu_count()
except NotImplementedError: # pragma: no cover
return 1
def open_ufo(path):
if hasattr(ufo_module.Font, "open"): # ufoLib2
return ufo_module.Font.open(path)
return ufo_module.Font(path) # defcon
def _font_to_quadratic(input_path, output_path=None, **kwargs):
ufo = open_ufo(input_path)
logger.info("Converting curves for %s", input_path)
if font_to_quadratic(ufo, **kwargs):
logger.info("Saving %s", output_path)
if output_path:
ufo.save(output_path)
else:
ufo.save() # save in-place
elif output_path:
_copytree(input_path, output_path)
def _samepath(path1, path2):
# TODO on python3+, there's os.path.samefile
path1 = os.path.normcase(os.path.abspath(os.path.realpath(path1)))
path2 = os.path.normcase(os.path.abspath(os.path.realpath(path2)))
return path1 == path2
def _copytree(input_path, output_path):
if _samepath(input_path, output_path):
logger.debug("input and output paths are the same file; skipped copy")
return
if os.path.exists(output_path):
shutil.rmtree(output_path)
shutil.copytree(input_path, output_path)
def _main(args=None):
"""Convert a UFO font from cubic to quadratic curves"""
parser = argparse.ArgumentParser(prog="cu2qu")
parser.add_argument("--version", action="version", version=fontTools.__version__)
parser.add_argument(
"infiles",
nargs="+",
metavar="INPUT",
help="one or more input UFO source file(s).",
)
parser.add_argument("-v", "--verbose", action="count", default=0)
parser.add_argument(
"-e",
"--conversion-error",
type=float,
metavar="ERROR",
default=None,
help="maxiumum approximation error measured in EM (default: 0.001)",
)
parser.add_argument(
"-m",
"--mixed",
default=False,
action="store_true",
help="whether to used mixed quadratic and cubic curves",
)
parser.add_argument(
"--keep-direction",
dest="reverse_direction",
action="store_false",
help="do not reverse the contour direction",
)
mode_parser = parser.add_mutually_exclusive_group()
mode_parser.add_argument(
"-i",
"--interpolatable",
action="store_true",
help="whether curve conversion should keep interpolation compatibility",
)
mode_parser.add_argument(
"-j",
"--jobs",
type=int,
nargs="?",
default=1,
const=_cpu_count(),
metavar="N",
help="Convert using N multiple processes (default: %(default)s)",
)
output_parser = parser.add_mutually_exclusive_group()
output_parser.add_argument(
"-o",
"--output-file",
default=None,
metavar="OUTPUT",
help=(
"output filename for the converted UFO. By default fonts are "
"modified in place. This only works with a single input."
),
)
output_parser.add_argument(
"-d",
"--output-dir",
default=None,
metavar="DIRECTORY",
help="output directory where to save converted UFOs",
)
options = parser.parse_args(args)
if ufo_module is None:
parser.error("Either ufoLib2 or defcon are required to run this script.")
if not options.verbose:
level = "WARNING"
elif options.verbose == 1:
level = "INFO"
else:
level = "DEBUG"
logging.basicConfig(level=level)
if len(options.infiles) > 1 and options.output_file:
parser.error("-o/--output-file can't be used with multile inputs")
if options.output_dir:
output_dir = options.output_dir
if not os.path.exists(output_dir):
os.mkdir(output_dir)
elif not os.path.isdir(output_dir):
parser.error("'%s' is not a directory" % output_dir)
output_paths = [
os.path.join(output_dir, os.path.basename(p)) for p in options.infiles
]
elif options.output_file:
output_paths = [options.output_file]
else:
# save in-place
output_paths = [None] * len(options.infiles)
kwargs = dict(
dump_stats=options.verbose > 0,
max_err_em=options.conversion_error,
reverse_direction=options.reverse_direction,
all_quadratic=False if options.mixed else True,
)
if options.interpolatable:
logger.info("Converting curves compatibly")
ufos = [open_ufo(infile) for infile in options.infiles]
if fonts_to_quadratic(ufos, **kwargs):
for ufo, output_path in zip(ufos, output_paths):
logger.info("Saving %s", output_path)
if output_path:
ufo.save(output_path)
else:
ufo.save()
else:
for input_path, output_path in zip(options.infiles, output_paths):
if output_path:
_copytree(input_path, output_path)
else:
jobs = min(len(options.infiles), options.jobs) if options.jobs > 1 else 1
if jobs > 1:
func = partial(_font_to_quadratic, **kwargs)
logger.info("Running %d parallel processes", jobs)
with closing(mp.Pool(jobs)) as pool:
pool.starmap(func, zip(options.infiles, output_paths))
else:
for input_path, output_path in zip(options.infiles, output_paths):
_font_to_quadratic(input_path, output_path, **kwargs)
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