41 lines
1.1 KiB
Python
Executable File
41 lines
1.1 KiB
Python
Executable File
#! /usr/bin/env python3
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"""extract_piewriter.py <filename> [<filename>...]
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Extracts PIEWriter documents extracted as raw "#064000" (binary blob) files
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from Apple DOS 3.3 disks. Performs the following conversions:
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- Strips high bits from printable ASCII characters that have it set.
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- Converts Mac-style CR-delimited lines to UNIX-style LF-delimited.
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- Replaces any other character with its C-style escaped hex representation
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(e.g., NUL is replaced with \\x00)
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The output is rough, but its enough to check it in to a git repository and
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begin cleaning up now properly text files.
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"""
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import sys
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if len(sys.argv) == 1:
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print(sys.modules[__name__].__doc__)
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sys.exit(1)
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for arg in sys.argv[1:]:
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with open(arg, 'rb') as f:
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infile = f.read()
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outfile = bytearray()
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for val in infile:
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if 0xa0 <= val < 0xff:
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outfile.append(val & 0x7f)
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elif val in (0x0d, 0x8d, 0x8a):
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outfile.append(0x0a)
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else:
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outfile.extend('\\x{:02x}'.format(val).encode('ASCII'))
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outname = ''.join((arg, '.txt'))
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print('Saving', outname)
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with open(outname, 'wb') as f:
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f.write(outfile)
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