47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
import argparse
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import PIL.Image
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import sys
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from voussoirkit import pathclass
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from voussoirkit import pipeable
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def grayscale(filename, *, inplace=False):
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filename = pathclass.Path(filename)
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basename = filename.replace_extension('').basename
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if basename.endswith('_gray'):
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return
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if inplace:
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new_filename = filename
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else:
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basename += '_gray'
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new_filename = filename.parent.with_child(basename).add_extension(filename.extension)
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image = PIL.Image.open(filename.absolute_path)
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image = image.convert('LA').convert(image.mode)
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image.save(new_filename.absolute_path, exif=image.info.get('exif', b''))
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return new_filename
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def grayscale_argparse(args):
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patterns = pipeable.input_many(args.patterns, skip_blank=True, strip=True)
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files = pathclass.glob_many_files(patterns)
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for file in files:
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new_filename = grayscale(file, inplace=args.inplace)
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if new_filename:
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pipeable.stdout(new_filename.absolute_path)
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return 0
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def main(argv):
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('patterns', nargs='+')
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parser.add_argument('--inplace', action='store_true')
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parser.set_defaults(func=grayscale_argparse)
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args = parser.parse_args(argv)
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return args.func(args)
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if __name__ == '__main__':
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raise SystemExit(main(sys.argv[1:]))
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