mirror of
https://github.com/cupcakearmy/glyphance.git
synced 2024-12-22 08:06:29 +00:00
77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
import hashlib
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import json
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import os
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import shutil
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import string
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import subprocess
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import utils
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with open(utils.asset_path('ranges.json')) as f:
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default_ranges = json.load(f)
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default_variation = {
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'variable': False,
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'css': {}
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}
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def optimise(config):
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# Check if destination is fine
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destination = os.path.abspath(config['output']['dir'])
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try:
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if not os.path.isdir(destination):
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os.makedirs(destination, exist_ok=True)
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if not os.access(destination, os.W_OK):
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raise Exception()
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except:
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print(f'Output directory not writable: "{destination}"')
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exit(1)
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# Clean
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if config['output']['clean']:
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print(f'Cleaning: "{destination}"')
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shutil.rmtree(destination)
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os.makedirs(destination)
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# Go over each font and variation of it.
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# Then go over every range and format and generate the subset
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# Finally add the relevant CSS
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css = ''
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with open(utils.asset_path('css.template')) as f:
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template = string.Template(f.read())
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for font, variations in config['fonts'].items():
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css += f'\n\n/* {font} */\n'
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for variation in variations:
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variation = utils.update_deep(default_variation, variation)
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print(f"Processing: {font} {os.path.basename(variation['file'])}")
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source = os.path.join(config['context'], variation['file'])
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for format in config['output']['formats']:
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for range, codes in default_ranges.items():
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unicodes = ', '.join(codes)
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# Create unique key on all parameters
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key = font+variation['file']+format+unicodes
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key = hashlib.sha1(key.encode()).hexdigest()
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# Generate subset
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output_file = os.path.join(destination, f'{key}.{format}')
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print(f" {range}@{format} -> {output_file}")
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command = f'pyftsubset --unicodes="{unicodes}" --layout-features="*" --flavor="{format}" --output-file="{output_file}" {source}'
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subprocess.call(command, shell=True)
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# Generate CSS
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ending = format
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if variation['variable']:
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ending += '-variations'
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src = f"url({config['output']['prefix']}{os.path.basename(output_file)}) format('{ending}')"
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merged = utils.update_deep(config['output']['css'], variation['css'])
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additional = '\n '.join([f"{key}: {value};" for key, value in merged.items()])
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css += template.substitute(range=range, font=font, src=src,
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unicodes=unicodes, additional=additional)
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with open(os.path.join(destination, 'fonts.css'), 'w') as f:
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f.write(css.strip())
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