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#!/usr/bin/python
#
# invoked by the Makefile
from __future__ import absolute_import, print_function, unicode_literals
import os
import re
import sys
import argparse
import fontforge
argparser = argparse.ArgumentParser(description=
"Generate a font file out of a source. Best invoked from the Makefile.")
argparser.add_argument(
'input',
help='Input font source, e.g. "/some/path/Bla.sfdir"')
argparser.add_argument(
'output',
help='Output font file, e.g. "/some/path/Bla.otf"')
argparser.add_argument(
'version',
help='Version string to embed into the font file, e.g. "v1.1"')
argparser.add_argument(
'--reloadgpos', action="store_true",
help='Clean GPOS lookups and reimport '
'them from the feature files before generating '
'font files. For Developement.')
argparser.add_argument(
'--reloadgsub', action="store_true",
help='Clean GSUB lookups and reimport '
'them from the feature files before generating '
'font files. For Developement.')
args = argparser.parse_args()
def reloadfeature(feature):
"""Read and merge a certain feature file. Example: For
EBGaramond12-Regular.sfdir, reloadfeature("GPOS") would merge
featurefiles/12-Regular_GPOS.fea and reloadfeature("features") would merge
featurefiles/12-Regular_features.fea (GSUB table)."""
# Guess prefix of feature file from input, e.g.
# 'EBGaramond12-Regular.sfdir' becomes inferred_style="12-Regular".
font_source_name = os.path.split(args.input)[1]
inferred_style = re.search('\d+-\w+', font_source_name).group(0)
featurepath = "featurefiles/" + inferred_style + "_%s.fea"
featurefile = featurepath % feature
if os.path.exists(featurefile):
font.mergeFeature(featurefile)
else:
sys.stderr.write("Could not find file " + featurefile +
", so one or more --reload*s is not doing anything.\n")
font = fontforge.open(args.input)
font.version = args.version
font.encoding = 'UnicodeFull'
font.selection.all()
font.removeOverlap()
font.autoHint()
if args.reloadgpos:
for lookup in font.gpos_lookups:
font.removeLookup(lookup)
reloadfeature("GPOS")
if args.reloadgsub:
for lookup in font.gsub_lookups:
font.removeLookup(lookup)
reloadfeature("features")
extension = os.path.splitext(args.output)[1]
if extension == '.ttf':
font.correctReferences()
# we don't scale the font any longer
# font.em = 2048
font.round()
font.generate(args.output) #do somthing about 'old-kern'## should we really?
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