diff options
author | pacien | 2018-11-30 21:06:39 +0100 |
---|---|---|
committer | pacien | 2018-11-30 21:06:39 +0100 |
commit | 1f0c6a7638353d1ebbbc4ba1a8de0887d5f68e98 (patch) | |
tree | ed9867c9997e9ceee750194fe8aaaa6f067a93f1 /src/rawblock.nim | |
parent | 3d5a87a5879aa724e47546d1bdbb7f6c9466cf94 (diff) | |
download | gziplike-1f0c6a7638353d1ebbbc4ba1a8de0887d5f68e98.tar.gz |
isolate blocks
Diffstat (limited to 'src/rawblock.nim')
-rw-r--r-- | src/rawblock.nim | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/src/rawblock.nim b/src/rawblock.nim deleted file mode 100644 index b4920fc..0000000 --- a/src/rawblock.nim +++ /dev/null | |||
@@ -1,40 +0,0 @@ | |||
1 | # gzip-like LZSS compressor | ||
2 | # Copyright (C) 2018 Pacien TRAN-GIRARD | ||
3 | # | ||
4 | # This program is free software: you can redistribute it and/or modify | ||
5 | # it under the terms of the GNU Affero General Public License as | ||
6 | # published by the Free Software Foundation, either version 3 of the | ||
7 | # License, or (at your option) any later version. | ||
8 | # | ||
9 | # This program is distributed in the hope that it will be useful, | ||
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | # GNU Affero General Public License for more details. | ||
13 | # | ||
14 | # You should have received a copy of the GNU Affero General Public License | ||
15 | # along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
16 | |||
17 | import bitio/integers, bitio/bitreader, bitio/bitwriter | ||
18 | |||
19 | const maxDataBitLength = high(uint16).int | ||
20 | const bitLengthFieldBitLength = 2 * wordBitLength | ||
21 | |||
22 | type RawBlock* = object | ||
23 | bitLength: int | ||
24 | data: seq[uint8] | ||
25 | |||
26 | proc readSerialised*(bitReader: BitReader): RawBlock = | ||
27 | let bitLength = bitReader.readBits(bitLengthFieldBitLength, uint16).int | ||
28 | let data = bitReader.readSeq(bitLength, uint8) | ||
29 | RawBlock(bitLength: bitLength, data: data.data) | ||
30 | |||
31 | proc writeSerialisedTo*(rawBlock: RawBlock, bitWriter: BitWriter) = | ||
32 | bitWriter.writeBits(bitLengthFieldBitLength, rawBlock.bitLength.uint16) | ||
33 | bitWriter.writeSeq(rawBlock.bitLength, rawBlock.data) | ||
34 | |||
35 | proc readRaw*(bitReader: BitReader, bits: int = maxDataBitLength): RawBlock = | ||
36 | let data = bitReader.readSeq(bits, uint8) | ||
37 | RawBlock(bitLength: data.bitLength, data: data.data) | ||
38 | |||
39 | proc writeRawTo*(rawBlock: RawBlock, bitWriter: BitWriter) = | ||
40 | bitWriter.writeSeq(rawBlock.bitLength, rawBlock.data) | ||