44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
#!/usr/bin/env python3
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import os
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import argparse
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import sys
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import filecmp
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def replace_if_changed(new, old):
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'''
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Compare contents and only replace if changed to avoid triggering a rebuild.
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'''
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try:
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changed = not filecmp.cmp(new, old, shallow=False)
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except FileNotFoundError:
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changed = True
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if changed:
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os.replace(new, old)
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else:
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os.remove(new)
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parser = argparse.ArgumentParser()
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parser.add_argument('--array-name', help='The name of the array variable')
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parser.add_argument('--output', metavar='STRING', help='Output filename',
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default=None)
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parser.add_argument('input', metavar='FILE', help='The input file',
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type=argparse.FileType('r'))
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args = parser.parse_args()
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if args.output is None:
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output = sys.stdout
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else:
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output = args.output + '~'
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with open(output, 'w') as f:
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f.write('static const char {}[] = {{\n'.format(args.array_name))
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for line in args.input:
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for ch in line:
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f.write(' 0x{:02x},\n'.format(ord(ch)))
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f.write('};')
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if args.output is not None:
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replace_if_changed(output, args.output)
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