1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/netwerk/protocol/http/make_outgoing_tables.py Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,56 @@
1.4 +# This script exists to auto-generate Http2HuffmanOutgoing.h from the table
1.5 +# contained in the HPACK spec. It's pretty simple to run:
1.6 +# python make_outgoing_tables.py < http2_huffman_table.txt > Http2HuffmanOutgoing.h
1.7 +# where huff_outgoing.txt is copy/pasted text from the latest version of the
1.8 +# HPACK spec, with all non-relevant lines removed (the most recent version
1.9 +# of huff_outgoing.txt also lives in this directory as an example).
1.10 +import sys
1.11 +
1.12 +sys.stdout.write('''/*
1.13 + * THIS FILE IS AUTO-GENERATED. DO NOT EDIT!
1.14 + */
1.15 +#ifndef mozilla__net__Http2HuffmanOutgoing_h
1.16 +#define mozilla__net__Http2HuffmanOutgoing_h
1.17 +
1.18 +namespace mozilla {
1.19 +namespace net {
1.20 +
1.21 +struct HuffmanOutgoingEntry {
1.22 + uint32_t mValue;
1.23 + uint8_t mLength;
1.24 +};
1.25 +
1.26 +static HuffmanOutgoingEntry HuffmanOutgoing[] = {
1.27 +''')
1.28 +
1.29 +entries = []
1.30 +for line in sys.stdin:
1.31 + line = line.strip()
1.32 + obracket = line.rfind('[')
1.33 + nbits = int(line[obracket + 1:-1])
1.34 +
1.35 + encend = obracket - 1
1.36 + hexits = nbits / 4
1.37 + if hexits * 4 != nbits:
1.38 + hexits += 1
1.39 +
1.40 + enc = line[encend - hexits:encend]
1.41 + val = int(enc, 16)
1.42 +
1.43 + entries.append({'length': nbits, 'value': val})
1.44 +
1.45 +line = []
1.46 +for i, e in enumerate(entries):
1.47 + sys.stdout.write(' { 0x%08x, %s }' %
1.48 + (e['value'], e['length']))
1.49 + if i < (len(entries) - 1):
1.50 + sys.stdout.write(',')
1.51 + sys.stdout.write('\n')
1.52 +
1.53 +sys.stdout.write('''};
1.54 +
1.55 +} // namespace net
1.56 +} // namespace mozilla
1.57 +
1.58 +#endif // mozilla__net__Http2HuffmanOutgoing_h
1.59 +''')
