apple / swift-nio-ssh
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
  • 8% duplication:
    • 7,865 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 667 duplicated lines
  • 58 duplicates
system8% (667 lines)
Duplication per Extension
swift8% (667 lines)
Duplication per Component (primary)
Sources/NIOSSH/Connection State Machine22% (283 lines)
Sources/NIOSSH/Child Channels7% (126 lines)
Sources/NIOSSHServer31% (79 lines)
Sources/NIOSSH/Keys And Signatures6% (64 lines)
Sources/NIOSSHClient19% (57 lines)
Sources/NIOSSH/User Authentication10% (46 lines)
ROOT20% (12 lines)
Sources/NIOSSH0% (0 lines)
Sources/NIOSSH/CSPRNG0% (0 lines)
Sources/NIOSSH/Key Exchange0% (0 lines)
Sources/NIOSSH/TransportProtection0% (0 lines)
Sources/NIOSSHPerformanceTester0% (0 lines)
docker0% (0 lines)

Duplication Between Components (50+ lines)

G Sources/NIOSSHClient Sources/NIOSSHClient Sources/NIOSSHServer Sources/NIOSSHServer Sources/NIOSSHClient--Sources/NIOSSHServer 114

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Show more details on duplication between components...
Longest Duplicates
The list of 20 longest duplicates.
See data for all 58 duplicates...
Size#FoldersFilesLinesCode
57 x 2 Sources/NIOSSHClient
Sources/NIOSSHServer
GlueHandler.swift
GlueHandler.swift
 17:121 (100%)
17:121 (100%)
 view
35 x 2 Sources/NIOSSH/Connection State Machine
Sources/NIOSSH/Connection State Machine
SSHConnectionStateMachine.swift
SSHConnectionStateMachine.swift
 848:882 (4%)
981:1015 (4%)
 view
27 x 2 Sources/NIOSSH/Connection State Machine
Sources/NIOSSH/Connection State Machine
SSHConnectionStateMachine.swift
SSHConnectionStateMachine.swift
 342:370 (3%)
567:597 (3%)
 view
24 x 2 Sources/NIOSSH/Connection State Machine
Sources/NIOSSH/Connection State Machine
SSHConnectionStateMachine.swift
SSHConnectionStateMachine.swift
 347:370 (3%)
461:484 (3%)
 view
24 x 2 Sources/NIOSSH/Connection State Machine
Sources/NIOSSH/Connection State Machine
SSHConnectionStateMachine.swift
SSHConnectionStateMachine.swift
 461:484 (3%)
574:597 (3%)
 view
15 x 2 Sources/NIOSSH/Connectio...ate Machine/States
Sources/NIOSSH/Connectio...ate Machine/States
RekeyingReceivedNewKeysState.swift
RekeyingSentNewKeysState.swift
 22:46 (78%)
22:46 (78%)
 view
13 x 2 Sources/NIOSSH/Connectio...ate Machine/States
Sources/NIOSSH/Connectio...ate Machine/States
ReceivedNewKeysState.swift
SentNewKeysState.swift
 22:46 (54%)
22:46 (54%)
 view
11 x 2 Sources/NIOSSH/Keys And Signatures
Sources/NIOSSH/Keys And Signatures
NIOSSHCertifiedPublicKey.swift
NIOSSHCertifiedPublicKey.swift
 200:210 (2%)
471:481 (2%)
 view
11 x 2 Sources/NIOSSHServer
Sources/NIOSSHServer
DataToBufferCodec.swift
ExecHandler.swift
 33:50 (47%)
69:86 (12%)
 view
9 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 501:512 (2%)
522:533 (2%)
 view
9 x 2 Sources/NIOSSH/User Authentication
Sources/NIOSSH/User Authentication
UserAuthenticationStateMachine.swift
UserAuthenticationStateMachine.swift
 271:280 (3%)
325:334 (3%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 186:194 (2%)
293:301 (2%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 251:259 (2%)
293:301 (2%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 272:280 (2%)
293:301 (2%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 186:194 (2%)
272:280 (2%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 251:259 (2%)
272:280 (2%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 186:194 (2%)
251:259 (2%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 619:626 (2%)
637:644 (2%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelUserEvents.swift
ChildChannelUserEvents.swift
 28:47 (3%)
213:232 (3%)
 view
8 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 206:216 (2%)
228:238 (2%)
 view
Duplicated Units
The list of top 9 duplicated units.
See data for all 9 unit duplicates...
Size#FoldersFilesLinesCode
15 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 185:203 
249:268 
 view
15 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 205:225 
227:247 
 view
14 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 436:455 
457:476 
 view
14 x 2 Sources/NIOSSH/Child Channels
Sources/NIOSSH/Child Channels
ChildChannelStateMachine.swift
ChildChannelStateMachine.swift
 478:497 
499:518 
 view
10 x 2 Sources/NIOSSHServer
Sources/NIOSSHServer
DataToBufferCodec.swift
ExecHandler.swift
 33:46 
69:82 
 view
8 x 3 Sources/NIOSSH/Connectio...ate Machine/States
Sources/NIOSSH/Connectio...ate Machine/States
Sources/NIOSSH/Connectio...ate Machine/States
RekeyingReceivedNewKeysState.swift
RekeyingSentNewKeysState.swift
RekeyingState.swift
 39:47 
39:47 
38:46 
 view
8 x 2 Sources/NIOSSH/Connectio...ate Machine/States
Sources/NIOSSH/Connectio...ate Machine/States
UserAuthenticationState.swift
UserAuthenticationState.swift
 38:46 
48:56 
 view
7 x 2 Sources/NIOSSH/Connectio...ate Machine/States
Sources/NIOSSH/Connectio...ate Machine/States
ActiveState.swift
ActiveState.swift
 34:41 
43:50 
 view
6 x 2 Sources/NIOSSHClient
Sources/NIOSSHServer
GlueHandler.swift
GlueHandler.swift
 117:123 
117:123 
 view