[Python] assistance with using fontTools

So i’ve been trying to compact primer/Octicons into a singular woff file such that it could be used in tandem with a css file referencing each and every svg as a unicode character, ive gotten to the point of being able to at least get a general idea of what it does but the documentation does not explain enough as to sucessfully tie svgs in a woff file to unicode characters

my expected result was a result like with Bootstrap Icons, where all their svgs are packed in a singular woff file and referenced in a css file such that it could be used with the < i > class (yes i know its italics), but every attempt i try to do it i either get hit in the face with a error, Ive used ai to no avail, so I'm ending up trying to build the script myself

ive managed to produce some result but i haven't tested it in a web dev environment the repo can be found here

Update: does not work, each icon appears as an unknown unicode character woff file not working

<!--I WANT THIS TO STAY LIKE THIS-->
<i class='oi oi-codepilot-16'></i>


/*this code ripped from bootstrap-icons.css, edited to include icons i want to use, and include the woff font the python program creates*/
@font-face {

font-display:block;
font-family:"octicons";
src: url(https://extravagantboost.github.io/octicons-css/fonts/octicon.woff) format("woff");
}
.oi::before,
[class^="oi-"]::before,
[class*="oi-"]::before {
display:inline-block;
font-family: octicons !important;
font-style: normal;
font-weight: normal !important;
font-variant: normal;
text-transform: none;
line-height: 1;
vertical-align: -.125em;
-webkit-font-smoothing: antiailiased;
-mos-osx-font-smoothing: grayscale
}
/*. . .*/
/*python generated code*/
.oi-copilot-16::before { content: "\f57481"; }


import os
import json
import defcon
from fontTools.ttLib import TTFont, newTable,getTableClass as gtc ,getTableModule as gtm,identifierToTag as idt
from fontTools.ttLib.tables.DefaultTable import DefaultTable
from fontTools.svgLib.path import SVGPath as svgPath
#from fontTools.ttLib.woff import WOFFFlavor
from svgpathtools import svg2paths
import math
def svg_to_glyph(svg_file, glyph_name,glyph_unicode):
paths, attributes = svg2paths(svg_file)
glyph_code = ''

for path in paths:
glyph_code += f'<path d="{path.d()}" />'
#unicode = math.round(math.random() * 10000)
return f'<glyph glyph-name="{glyph_name}" unicode="{glyph_unicode}" d="{glyph_code}" />'

def create_woff_font(svg_files, output_woff, output_json):
jsn = {};
font = TTFont()
CmapSubtable = gtm("cmap").CmapSubtable
cmap4_0_3 = CmapSubtable.newSubtable(4)
cmap4_0_3.platformID = 0
cmap4_0_3.platEncID = 3
cmap4_0_3.language = 0
cmap4_0_3.cmap = {};
unicode = 0x0E000
for file in svg_files:
handle = open(file,"r")
print(file)
name = str(file).split("/")[::-1][0].replace(".svg","")

#print(file.split("/").reverse())

svg = handle.read()
unicode+=1
glyph = defcon.Glyph()
path = svgPath.fromstring(svg)
path.draw(glyph.getPen())
cmap4_0_3.cmap[unicode] = glyph
jsn[unicode] = name
handle.close()
cmap = newTable("cmap");
cmap.tableVersion = 0;
cmap.tables = [cmap4_0_3]
font.cmap = cmap
font.flavor = "woff"
font.save(output_woff + ".woff")
#font.flavor = "woff2"
#font.save(output_woff + ".woff2")
#json.dump(jsn,json_file, indent=4)
with open(output_json, 'w') as json_file:
json.dump(jsn, json_file, indent=4)
def create_css(output_css,jsn):
csstxt = ""
csstxt += """
@font-face {\n
font-display:block;
font-family:\"octicons\";
src: url(./fonts/octicon.woff2) format("woff2"),
url(./fonts/octicon.woff) format("woff");
}\n"""
csstxt += """.oi::before,
[class^="oi-"]::before,
[class*="oi-"]::before {
display:inline-block;
font-family: octicons !important;
font-style: normal;
font-weight: normal !important;
font-variant: normal;
text-transform: none;
line-height: 1;
vertical-align: -.125em;
-webkit-font-smoothing: antiailiased;
-mos-osx-font-smoothing: grayscale
}\n"""
with open(output_json, "r") as jsn:
m = jsn.read()
jso = json.loads(m)
for i in jso.items():
csstxt += ".oi-"+str(i[1]) + "::before { content: \"\\f"+i[0] + "\"; }\n"
handle = open(output_css,"w");handle.write(csstxt)
if __name__ == "__main__":
svg_directory = './icons'
output_woff = './css/octicon'
output_json = './css/octicon-map.json'
output_css = "./css/octicon.css"
svg_files = [os.path.join(svg_directory, f) for f in os.listdir(svg_directory) if f.endswith('.svg')]
create_woff_font(svg_files, output_woff, output_json)
create_css(output_css,output_json)

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