netwerk/protocol/http/make_outgoing_tables.py@6474c204b198 (annotated)
netwerk/protocol/http/make_outgoing_tables.py
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | # This script exists to auto-generate Http2HuffmanOutgoing.h from the table |
| michael@0 | 2 | # contained in the HPACK spec. It's pretty simple to run: |
| michael@0 | 3 | # python make_outgoing_tables.py < http2_huffman_table.txt > Http2HuffmanOutgoing.h |
| michael@0 | 4 | # where huff_outgoing.txt is copy/pasted text from the latest version of the |
| michael@0 | 5 | # HPACK spec, with all non-relevant lines removed (the most recent version |
| michael@0 | 6 | # of huff_outgoing.txt also lives in this directory as an example). |
| michael@0 | 7 | import sys |
| michael@0 | 8 | |
| michael@0 | 9 | sys.stdout.write('''/* |
| michael@0 | 10 | * THIS FILE IS AUTO-GENERATED. DO NOT EDIT! |
| michael@0 | 11 | */ |
| michael@0 | 12 | #ifndef mozilla__net__Http2HuffmanOutgoing_h |
| michael@0 | 13 | #define mozilla__net__Http2HuffmanOutgoing_h |
| michael@0 | 14 | |
| michael@0 | 15 | namespace mozilla { |
| michael@0 | 16 | namespace net { |
| michael@0 | 17 | |
| michael@0 | 18 | struct HuffmanOutgoingEntry { |
| michael@0 | 19 | uint32_t mValue; |
| michael@0 | 20 | uint8_t mLength; |
| michael@0 | 21 | }; |
| michael@0 | 22 | |
| michael@0 | 23 | static HuffmanOutgoingEntry HuffmanOutgoing[] = { |
| michael@0 | 24 | ''') |
| michael@0 | 25 | |
| michael@0 | 26 | entries = [] |
| michael@0 | 27 | for line in sys.stdin: |
| michael@0 | 28 | line = line.strip() |
| michael@0 | 29 | obracket = line.rfind('[') |
| michael@0 | 30 | nbits = int(line[obracket + 1:-1]) |
| michael@0 | 31 | |
| michael@0 | 32 | encend = obracket - 1 |
| michael@0 | 33 | hexits = nbits / 4 |
| michael@0 | 34 | if hexits * 4 != nbits: |
| michael@0 | 35 | hexits += 1 |
| michael@0 | 36 | |
| michael@0 | 37 | enc = line[encend - hexits:encend] |
| michael@0 | 38 | val = int(enc, 16) |
| michael@0 | 39 | |
| michael@0 | 40 | entries.append({'length': nbits, 'value': val}) |
| michael@0 | 41 | |
| michael@0 | 42 | line = [] |
| michael@0 | 43 | for i, e in enumerate(entries): |
| michael@0 | 44 | sys.stdout.write(' { 0x%08x, %s }' % |
| michael@0 | 45 | (e['value'], e['length'])) |
| michael@0 | 46 | if i < (len(entries) - 1): |
| michael@0 | 47 | sys.stdout.write(',') |
| michael@0 | 48 | sys.stdout.write('\n') |
| michael@0 | 49 | |
| michael@0 | 50 | sys.stdout.write('''}; |
| michael@0 | 51 | |
| michael@0 | 52 | } // namespace net |
| michael@0 | 53 | } // namespace mozilla |
| michael@0 | 54 | |
| michael@0 | 55 | #endif // mozilla__net__Http2HuffmanOutgoing_h |
| michael@0 | 56 | ''') |
