How to get registered OT features tags via code

Scripting
1

Hi @GeorgSeifert,

is there a function within Glyphsapp to call/get all registered glyph name suffixes like .ss01, .tf, .otf, .sc, etc?

Something similar to Glyphs.scriptSuffixes?

Thanks,
Olli

2

I would like to do something like:

for g in font.glyphs:
	if any(True for part in g.name.split('.') if part in Glyphs.featureSuffixes):
		# do something
3

There is no direct API for this. But you can (miss-)use the localisation API.

frameworkBundle = NSBundle.bundleForClass_(GSFeature.class())
localizedName = frameworkBundle.localizedStringForKey_value_table_(featureTag, None, "FeatureNames")
if localizedName is not None:
    # do something.
4

Thanks Georg, this is already a good direction, but it does not fit perfectly to my needs.

I tried the following:

from GlyphsApp import * 
from Foundation import NSBundle
fontObj = Glyphs.font

for g in fontObj.glyphs:
	if '.' not in g.name or g.name[0] in ('.', '_'):
		continue
	for namePart in g.name.split('.')[1:]:
		frameworkBundle = NSBundle.bundleForClass_(GSFeature.class__())
		localizedName = frameworkBundle.localizedStringForKey_value_table_(namePart, None, "FeatureNames")
		if localizedName is not None:
			print ('%s: %s = %s'%(g.name, namePart, localizedName))

Here is a summary of an output:
Q.ss01: ss01 = Stylistic Set 1
oslash.bold: bold = bold
n.sups: sups = Superscript
De-cy.loclBGR: loclBGR = loclBGR
n.subs: subs = Subscript
zero.dnom: dnom = Denominators
nine.numr: numr = Numerators
zero.osf: osf = osf
nine.tf: tf = tf
periodcentered.loclCAT: loclCAT = loclCAT
dieresiscomb.case: case = Case-Sensitive FormsQ.ss01: ss01 = Stylistic Set 1
oslash.bold: bold = bold
n.sups: sups = Superscript
De-cy.loclBGR: loclBGR = loclBGR
n.subs: subs = Subscript
zero.dnom: dnom = Denominators
nine.numr: numr = Numerators
zero.osf: osf = osf
nine.tf: tf = tf
periodcentered.loclCAT: loclCAT = loclCAT
dieresiscomb.case: case = Case-Sensitive Forms

This is not what I want to get. It should give me ‘None’ for ‘oslash.bold’, and ‘tf’ should be ‘Tabular Figures’ not ‘tf’.

5

This only checks for actual feature names. So ‘tf’ will need special treatment.

Maybe you parse the FeatureNames file yourself and add some overwrites/additions.