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Diffstat (limited to 'Mac/Lib/applesingle.py')
-rw-r--r-- | Mac/Lib/applesingle.py | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/Mac/Lib/applesingle.py b/Mac/Lib/applesingle.py deleted file mode 100644 index f8be3d2..0000000 --- a/Mac/Lib/applesingle.py +++ /dev/null @@ -1,100 +0,0 @@ -# applesingle - a module to decode AppleSingle files -import struct -import MacOS -import sys - -Error="applesingle.Error" - -verbose=0 - -# File header format: magic, version, unused, number of entries -AS_HEADER_FORMAT="ll16sh" -AS_HEADER_LENGTH=26 -# The flag words for AppleSingle -AS_MAGIC=0x00051600 -AS_VERSION=0x00020000 - -# Entry header format: id, offset, length -AS_ENTRY_FORMAT="lll" -AS_ENTRY_LENGTH=12 - -# The id values -AS_DATAFORK=1 -AS_RESOURCEFORK=2 -AS_IGNORE=(3,4,5,6,8,9,10,11,12,13,14,15) - -def decode(input, output, resonly=0): - if type(input) == type(''): - input = open(input, 'rb') - # Should we also test for FSSpecs or FSRefs? - header = input.read(AS_HEADER_LENGTH) - try: - magic, version, dummy, nentry = struct.unpack(AS_HEADER_FORMAT, header) - except ValueError, arg: - raise Error, "Unpack header error: %s"%arg - if verbose: - print 'Magic: 0x%8.8x'%magic - print 'Version: 0x%8.8x'%version - print 'Entries: %d'%nentry - if magic != AS_MAGIC: - raise Error, 'Unknown AppleSingle magic number 0x%8.8x'%magic - if version != AS_VERSION: - raise Error, 'Unknown AppleSingle version number 0x%8.8x'%version - if nentry <= 0: - raise Error, "AppleSingle file contains no forks" - headers = [input.read(AS_ENTRY_LENGTH) for i in range(nentry)] - didwork = 0 - for hdr in headers: - try: - id, offset, length = struct.unpack(AS_ENTRY_FORMAT, hdr) - except ValueError, arg: - raise Error, "Unpack entry error: %s"%arg - if verbose: - print 'Fork %d, offset %d, length %d'%(id, offset, length) - input.seek(offset) - if length == 0: - data = '' - else: - data = input.read(length) - if len(data) != length: - raise Error, 'Short read: expected %d bytes got %d'%(length, len(data)) - if id == AS_DATAFORK: - if verbose: - print ' (data fork)' - if not resonly: - didwork = 1 - fp = open(output, 'wb') - fp.write(data) - fp.close() - elif id == AS_RESOURCEFORK: - didwork = 1 - if verbose: - print ' (resource fork)' - if resonly: - fp = open(output, 'wb') - else: - fp = MacOS.openrf(output, 'wb') - fp.write(data) - fp.close() - elif id in AS_IGNORE: - if verbose: - print ' (ignored)' - else: - raise Error, 'Unknown fork type %d'%id - if not didwork: - raise Error, 'No useful forks found' - -def _test(): - if len(sys.argv) < 3 or sys.argv[1] == '-r' and len(sys.argv) != 4: - print 'Usage: applesingle.py [-r] applesinglefile decodedfile' - sys.exit(1) - if sys.argv[1] == '-r': - resonly = 1 - del sys.argv[1] - else: - resonly = 0 - decode(sys.argv[1], sys.argv[2], resonly=resonly) - -if __name__ == '__main__': - _test() -
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