71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
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#!/usr/bin/env python
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import io
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import sys
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import json
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import typing
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import os.path
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import argparse
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import subprocess
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class FontArg(object):
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def __init__(self, d):
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self.font = d['font']
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self.range = d.get('range')
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self.symbols = d.get('symbols')
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def gen_lvconv_line(dest: str, size: int, bpp: int, fonts: typing.List[FontArg], compress:bool=False):
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args = ['lv_font_conv', '--size', str(size), '--output', dest, '--bpp', str(bpp), '--format', 'lvgl']
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if not compress:
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args.append('--no-compress')
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for font in fonts:
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args.extend(['--font', font.font])
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if font.range:
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args.extend(['--range', font.range])
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if font.symbols:
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args.extend(['--symbols', font.symbols])
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return args
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def main():
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ap = argparse.ArgumentParser(description='auto generate lvGL font files from fonts')
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ap.add_argument('config', type=str, help='config file to use')
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ap.add_argument('-e', '--enable', type=str, action='append', help='optional feature to enable in font generation', default=[], metavar='features', dest='features')
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ap.add_argument('-f', '--font', type=str, action='append', help='Choose specific fonts to generate (default: all)', default=[])
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args = ap.parse_args()
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if not os.path.exists(args.config):
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sys.exit(f'Error: the config file {args.config} does not exist.')
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if not os.access(args.config, os.R_OK):
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sys.exit(f'Error: the config file {args.config} is not accessable (permissions?).')
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with open(args.config, 'r') as fd:
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data = json.load(fd)
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for enabled_feature in args.features:
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if enabled_feature not in data['features']:
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sys.exit(f'Error: the requested feature {enabled_feature} does not exist in {args.config}.')
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for (name,font) in data['fonts'].items():
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if args.font and name not in args.font:
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continue
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sources = font.pop('sources')
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if 'patches' in font:
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patches = font.pop('patches')
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else:
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patches = None
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for enabled_feature in args.features:
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if name in data['features'][enabled_feature]:
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sources.extend(data['features'][enabled_feature][name])
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font['fonts'] = [FontArg(thing) for thing in sources]
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line = gen_lvconv_line(f'{name}.c', **font)
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subprocess.check_call(line)
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if patches:
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for patch in patches:
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subprocess.check_call(patch)
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if __name__ == '__main__':
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main()
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