GitHub/SWCompression
1
0
Fork 0
mirror of https://github.com/tsolomko/SWCompression.git synced 2026-06-23 14:56:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add out variable to LZMA2 decoder and change dictionarySize setup

Browse Source
This commit is contained in:
Timofey Solomko
2017-10-29 12:50:58 +03:00
parent bca275f3aa
commit 328345cbe3
1 changed files with 7 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Sources/LZMA/LZMA2Decoder.swift
+7 -3
View File
@@ -10,13 +10,16 @@ class LZMA2Decoder {
private let pointerData: DataWithPointer
private let decoder: LZMATempDecoder
var out: [UInt8] {
return self.decoder.out
}
init(_ pointerData: DataWithPointer) throws {
self.pointerData = pointerData
self.decoder = try LZMATempDecoder(pointerData)
self.decoder.dictionarySize = try LZMA2Decoder.calculateDictionarySize(self.pointerData.byte())
}
private static func calculateDictionarySize(_ byte: UInt8) throws -> Int {
func setDictionarySize(_ byte: UInt8) throws {
let bits = byte & 0x3F
guard byte & 0xC0 == 0
else { throw LZMA2Error.wrongProperties }
@@ -30,7 +33,8 @@ class LZMA2Decoder {
dictSize = UInt32(2 | (bits.toInt() & 1))
dictSize <<= UInt32(bits.toInt() / 2 + 11)
}
return Int(dictSize)
self.decoder.dictionarySize = Int(dictSize)
}
/// Main LZMA2 decoder function.