26 lines
579 B
Python
26 lines
579 B
Python
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#!/usr/bin/env python
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#
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# A simple Python script to compress data
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# with zlib's DEFLATE algorithm at build time.
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#
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import zlib, sys
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level = 9
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input = sys.stdin.read()
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zData = zlib.compress(input, level)
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# Strip off the zlib header, and return the raw DEFLATE data stream.
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# See the zlib RFC: http://www.gzip.org/zlib/rfc-zlib.html
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cmf = ord(zData[0])
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flg = ord(zData[1])
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assert (cmf & 0x0F) == 8 # DEFLATE algorithm
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assert (flg & 0x20) == 0 # No preset dictionary
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# Strip off 2-byte header and 4-byte checksum
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rawData = zData[2:len(zData)-4]
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sys.stdout.write(rawData)
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