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Added useful UInt8 extensions.

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This commit is contained in:
Timofey Solomko
2016-10-24 00:21:08 +03:00
parent 28f1223475
commit dcba4d777e
2 changed files with 22 additions and 0 deletions
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SWCompression.xcodeproj/project.pbxproj
+4
View File
@@ -15,6 +15,7 @@
06BE1AD21DB410F100EE0F59 /* SWCompression.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 06BE1AC81DB410F100EE0F59 /* SWCompression.framework */; };
06BE1AD71DB410F100EE0F59 /* SWCompressionTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06BE1AD61DB410F100EE0F59 /* SWCompressionTests.swift */; };
06BE1AD91DB410F100EE0F59 /* SWCompression.h in Headers */ = {isa = PBXBuildFile; fileRef = 06BE1ACB1DB410F100EE0F59 /* SWCompression.h */; settings = {ATTRIBUTES = (Public, ); }; };
06E961CA1DBD5FA1008C47F2 /* HuffmanTable.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06E961C91DBD5FA1008C47F2 /* HuffmanTable.swift */; };
/* End PBXBuildFile section */
/* Begin PBXContainerItemProxy section */
@@ -39,6 +40,7 @@
06BE1AD11DB410F100EE0F59 /* SWCompressionTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = SWCompressionTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
06BE1AD61DB410F100EE0F59 /* SWCompressionTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SWCompressionTests.swift; sourceTree = "<group>"; };
06BE1AD81DB410F100EE0F59 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
06E961C91DBD5FA1008C47F2 /* HuffmanTable.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = HuffmanTable.swift; sourceTree = "<group>"; };
/* End PBXFileReference section */
/* Begin PBXFrameworksBuildPhase section */
@@ -93,6 +95,7 @@
06BE1ACB1DB410F100EE0F59 /* SWCompression.h */,
061FCE301DBCC8BF0052F7BE /* DataExtension.swift */,
061FCE251DBCC4BE0052F7BE /* Deflate.swift */,
06E961C91DBD5FA1008C47F2 /* HuffmanTable.swift */,
06BE1ACC1DB410F100EE0F59 /* Info.plist */,
);
path = Sources;
@@ -224,6 +227,7 @@
isa = PBXSourcesBuildPhase;
buildActionMask = 2147483647;
files = (
06E961CA1DBD5FA1008C47F2 /* HuffmanTable.swift in Sources */,
061FCE261DBCC4BE0052F7BE /* Deflate.swift in Sources */,
061FCE311DBCC8BF0052F7BE /* DataExtension.swift in Sources */,
);
Sources/Deflate.swift
+18
View File
@@ -8,6 +8,24 @@
import Foundation
extension UInt8 {
subscript(index: Int) -> UInt8 {
precondition(index >= 0 && index < 8, "Index must be between 0 and 7 (included)")
let uindex = UInt8(truncatingBitPattern: index)
return (self & (0x1 << uindex)) >> uindex
}
subscript(range: CountableRange<Int>) -> [UInt8] {
return range.map {
let uindex = UInt8(truncatingBitPattern: $0)
return (self & (0x1 << uindex)) >> uindex
}
}
}
public enum DeflateError: Error {
case WrongMagic
case UnknownCompressionMethod