79 lines
2.8 KiB
Python
Executable file
79 lines
2.8 KiB
Python
Executable file
#!/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 Source(object):
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def __init__(self, d):
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self.file = d['file']
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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, sources: typing.List[Source], 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 source in sources:
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args.extend(['--font', source.file])
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if source.range:
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args.extend(['--range', source.range])
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if source.symbols:
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args.extend(['--symbols', source.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='FEATURE', 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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fonts_to_run = set(data.keys())
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if args.font:
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enabled_fonts = set()
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for font in args.font:
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enabled_fonts.add(font[:-2] if font.endswith('.c') else font)
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d = enabled_fonts.difference(fonts_to_run)
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if d:
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print(f'Warning: requested font{"s" if len(d)>1 else ""} missing: {" ".join(d)}')
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fonts_to_run = fonts_to_run.intersection(enabled_fonts)
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for name in fonts_to_run:
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font = data[name]
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sources = font.pop('sources')
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patches = font.pop('patches') if 'patches' in font else []
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features = font.pop('features') if 'features' in font else []
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for enabled_feature in args.features:
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if enabled_feature in features:
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sources.extend(features[enabled_feature])
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font['sources'] = [Source(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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try: patch = patch.format(name=name, file=name+'.c')
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except: pass
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try: patch = [arg.format(name=name, file=name+'.c') for arg in patch]
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except: pass
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subprocess.check_call(patch)
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if __name__ == '__main__':
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main()
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