subset

gistfile1.txt

import sys
import argparse


from fontTools.subset import main as subsetter
from fontTools.ttLib import TTFont
from pathlib import Path

parser = argparse.ArgumentParser()
parser.add_argument('font_in', type=Path)
parser.add_argument('font_out', type=Path)

args = parser.parse_args()

font = TTFont(str(args.font_in))
cmap = font.getBestCmap()
cmap_reversed = {v:k for k,v in cmap.items()}

keep = list('BCDFGHIJKLMNOPRSTUVWXY .bcdghijklmnopqrstuvwxy')
keep = list(map(ord, keep))

# keep_extend = ['dotlessi', 'dotlessj', 'dotaccent']
keep += [567, 305, 729]


base = Path(__file__).parent

replacer = cmap[46] # period

if font.get('CFF '):
    cff = font['CFF ']
    cff.desubroutinize()
    content = cff.cff[cff.cff.keys()[0]]
    for key in content.CharStrings.keys():
        if cmap_reversed.get(key) in keep:
            continue
        content.CharStrings[key] = content.CharStrings[replacer]

else:
    keep = list(map(lambda x:cmap.get(x), keep))
    glyf = font['glyf']
    for glyphName in glyf.glyphOrder:
        if glyphName in keep or replacer in glyphName:
            continue
        glyf[glyphName] = glyf[replacer]
    

font.save(args.font_out)