39 lines
1013 B
Python
39 lines
1013 B
Python
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# Copyright (c) 2012 Google Inc. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This is a simple utility for dumping out the header of a compressed file, and
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# is suitable for doing spot checks of compressed. files. However, this only
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# implements the "long" form of the table directory.
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import struct
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import sys
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def dump_woff2_header(header):
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header_values = struct.unpack('>IIIHHIHHIIIII', header[:44])
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for i, key in enumerate([
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'signature',
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'flavor',
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'length',
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'numTables',
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'reserved',
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'totalSfntSize',
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'majorVersion',
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'minorVersion',
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'metaOffset',
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'metaOrigLength',
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'privOffset',
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'privLength']):
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print key, header_values[i]
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numTables = header_values[3]
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for i in range(numTables):
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entry = struct.unpack('>IIIII', header[44+20*i:44+20*(i+1)])
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print '%08x %d %d %d %d' % entry
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def main():
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header = file(sys.argv[1]).read()
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dump_woff2_header(header)
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main()
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