apple / swift-nio
Duplication

Places in code with 6 or more lines that are exactly the same.

Intro
  • For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
  • Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
  • You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.
Learn more...
Duplication Overall
  • 12% duplication:
    • 26,977 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 3,487 duplicated lines
  • 648 duplicates
system12% (3,487 lines)
Duplication per Extension
swift13% (3,172 lines)
yaml54% (201 lines)
c5% (114 lines)
Duplication per Component (primary)
Sources/NIOCore21% (1,771 lines)
Sources/NIOPerformanceTester39% (593 lines)
Sources/NIOPosix6% (451 lines)
docker54% (201 lines)
Sources/CNIOHTTPParser3% (68 lines)
Sources/CNIOAtomics30% (46 lines)
Sources/NIOHTTP11% (46 lines)
Sources/NIOHTTP1Client64% (44 lines)
Sources/NIOEchoServer80% (40 lines)
Sources/NIOEchoClient69% (38 lines)
Sources/NIOChatClient62% (34 lines)
Sources/NIOUDPEchoServer65% (32 lines)
Sources/NIOChatServer33% (30 lines)
Sources/NIOWebSocketClient22% (28 lines)
Sources/NIOHTTP1Server6% (28 lines)
Sources/NIOWebSocketServer9% (19 lines)
Sources/NIOWebSocket1% (12 lines)
Sources/NIOUDPEchoClient8% (6 lines)
ROOT0% (0 lines)
Sources/CNIODarwin0% (0 lines)
Sources/CNIOLinux0% (0 lines)
Sources/CNIOSHA10% (0 lines)
Sources/CNIOWindows0% (0 lines)
Sources/NIO0% (0 lines)
Sources/NIOAsyncAwaitDemo0% (0 lines)
Sources/NIOConcurrencyHelpers0% (0 lines)
Sources/NIOCrashTester0% (0 lines)
Sources/NIOEmbedded0% (0 lines)
Sources/NIOFoundationCompat0% (0 lines)
Sources/NIOMulticastChat0% (0 lines)
Sources/NIOTLS0% (0 lines)
Sources/_NIOConcurrency0% (0 lines)
Sources/_NIODataStructures0% (0 lines)
dev0% (0 lines)
scripts0% (0 lines)

Duplication Between Components (50+ lines)

G Sources/NIOCore Sources/NIOCore Sources/NIOPosix Sources/NIOPosix Sources/NIOCore--Sources/NIOPosix 390 Sources/NIOEchoClient Sources/NIOEchoClient Sources/NIOHTTP1Client Sources/NIOHTTP1Client Sources/NIOEchoClient--Sources/NIOHTTP1Client 72 Sources/NIOWebSocketClient Sources/NIOWebSocketClient Sources/NIOHTTP1Client--Sources/NIOWebSocketClient 56 Sources/NIOChatClient Sources/NIOChatClient Sources/NIOChatClient--Sources/NIOEchoClient 66 Sources/NIOChatClient--Sources/NIOHTTP1Client 66 Sources/NIOEchoServer Sources/NIOEchoServer Sources/NIOUDPEchoServer Sources/NIOUDPEchoServer Sources/NIOEchoServer--Sources/NIOUDPEchoServer 64 Sources/NIOChatServer Sources/NIOChatServer Sources/NIOChatServer--Sources/NIOEchoServer 54

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Show more details on duplication between components...
Longest Duplicates
The list of 20 longest duplicates.
See data for all 648 duplicates...
Size#FoldersFilesLinesCode
131 x 2 Sources/NIOPerformanceTester
Sources/NIOPerformanceTester
resources.swift
resources.swift
 263:502 (24%)
753:992 (24%)
 view
113 x 2 Sources/NIOPerformanceTester
Sources/NIOPerformanceTester
resources.swift
resources.swift
 508:726 (21%)
753:971 (21%)
 view
113 x 2 Sources/NIOPerformanceTester
Sources/NIOPerformanceTester
resources.swift
resources.swift
 263:481 (21%)
508:726 (21%)
 view
112 x 2 Sources/NIOPerformanceTester
Sources/NIOPerformanceTester
resources.swift
resources.swift
 47:261 (20%)
537:751 (20%)
 view
91 x 2 Sources/NIOPerformanceTester
Sources/NIOPerformanceTester
resources.swift
resources.swift
 47:236 (16%)
292:481 (16%)
 view
91 x 2 Sources/NIOPerformanceTester
Sources/NIOPerformanceTester
resources.swift
resources.swift
 47:236 (16%)
782:971 (16%)
 view
61 x 2 Sources/NIOCore
Sources/NIOPosix
IntegerBitPacking.swift
IntegerBitPacking.swift
 17:101 (100%)
15:99 (100%)
 view
54 x 2 Sources/NIOCore
Sources/NIOPosix
IntegerTypes.swift
IntegerTypes.swift
 20:114 (100%)
18:112 (100%)
 view
46 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1638:1697 (2%)
1850:1909 (2%)
 view
43 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1438:1493 (2%)
1850:1905 (2%)
 view
43 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1438:1493 (2%)
1638:1693 (2%)
 view
40 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1250:1301 (2%)
1638:1689 (2%)
 view
40 x 2 docker
docker
docker-compose.2004.56.yaml
docker-compose.2004.main.yaml
 20:61 (65%)
20:61 (65%)
 view
40 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1250:1301 (2%)
1850:1901 (2%)
 view
40 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1250:1301 (2%)
1438:1489 (2%)
 view
37 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1074:1121 (2%)
1850:1897 (2%)
 view
37 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1074:1121 (2%)
1638:1685 (2%)
 view
37 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1074:1121 (2%)
1438:1485 (2%)
 view
37 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 1074:1121 (2%)
1250:1297 (2%)
 view
34 x 2 Sources/NIOCore
Sources/NIOCore
ByteBuffer-multi-int.swift
ByteBuffer-multi-int.swift
 910:953 (1%)
1250:1293 (1%)
 view
Duplicated Units
The list of top 3 duplicated units.
See data for all 3 unit duplicates...
Size#FoldersFilesLinesCode
15 x 2 Sources/NIOPosix
Sources/NIOPosix
Bootstrap.swift
Bootstrap.swift
 672:687 
1100:1115 
 view
12 x 2 Sources/NIOPerformanceTester
Sources/NIOPerformanceTester
ExecuteBenchmark.swift
SchedulingAndRunningBenchmark.swift
 25:40 
25:40 
 view
8 x 2 Sources/NIOPosix
Sources/NIOPosix
SelectorEpoll.swift
SelectorUring.swift
 283:291 
350:358 
 view