nerd-fonts/bin/scripts/name_parser/query_name

#!/usr/bin/env python3
# coding=utf8
#
# Usually called via
# $ fontforge query_name fontfile.tff 2>/dev/null

import sys
import os.path
import fontforge

###### Some helpers

def get_sfnt_dict(font):
    """Extract SFNT table as nice dict"""
    d = { }
    for l, k, v in font.sfnt_names:
        if k not in d:
            d[k] = [ v ]
        else:
            d[k] += [ v ]
    d = { k: v[0] if v and len(v) == 1 else tuple(v) for k, v in d.items() }
    return d

###### Let's go!

if len(sys.argv) < 2:
    print('Usage: {} font_name [font_name ...]\n'.format(sys.argv[0]))
    sys.exit(1)

print('Examining {} font files'.format(len(sys.argv) - 1))
add_line = False

for filename in sys.argv[1:]:
    fullfile = os.path.basename(filename)
    fname = os.path.splitext(fullfile)[0]

    font = fontforge.open(filename, 1)
    sfnt = get_sfnt_dict(font)
    psname = font.fontname
    aname = font.fondname
    full = font.fullname
    fam = font.familyname
    font.close()

    sfnt_full =    sfnt.get('Fullname', None)
    sfnt_fam =     sfnt.get('Family', None)
    sfnt_subfam =  sfnt.get('SubFamily', None)
    sfnt_pfam =    sfnt.get('Preferred Family', '-')
    sfnt_psubfam = sfnt.get('Preferred Styles', '-')
    sfnt_psname =  sfnt.get('PostScriptName', '-')
    sfnt_compat =  sfnt.get('Compatible Full', '-')
    sfnt_cidff =   sfnt.get('CID findfont Name', '-')
    sfnt_wfam =    sfnt.get('WWS Family', '-')
    sfnt_wsubfam = sfnt.get('WWS Subfamily', '-')


    if add_line:
        print()
    else:
        add_line = True

    print('======== {} ========'.format(fullfile))
    print('SFNT Fullname      ID 4     {}'.format(sfnt_full))
    print('SFNT Family        ID 1     {}'.format(sfnt_fam))
    print('SFNT SubFamily     ID 2     {}'.format(sfnt_subfam))
    print('SFNT Pref Family   ID 16    {}'.format(sfnt_pfam))
    print('SFNT Pref Styles   ID 17    {}'.format(sfnt_psubfam))
    print('SFNT PS Name       ID 6     {}'.format(sfnt_psname))
    print('SFNT Compatible    ID 18    {}'.format(sfnt_compat))
    print('SFNT CID findfont  ID 20    {}'.format(sfnt_cidff))
    print('SFNT WWS Family    ID 21    {}'.format(sfnt_wfam))
    print('SFNT WWS SubFamily ID 22    {}'.format(sfnt_wsubfam))
    print('PS fontname                 {}'.format(psname))
    print('PS fullname                 {}'.format(full))
    print('PS familyname               {}'.format(fam))
    print('fondname                    {}'.format(aname))