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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

7% duplication:

28,819 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
2,274 duplicated lines

173 duplicates

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
fizz/client (12%) --> fizz/server (11%)	803	9 file pairs	details...
fizz/extensions (5%) --> fizz/protocol (2%)	172	4 file pairs	details...

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Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 173 duplicates...

Size	#	Folders	Files	Lines	Code
45	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	286:337 (2%) 283:335 (2%)	view
39	x 2	fizz/util fizz/util	Variant.h Variant.h	109:147 (21%) 187:225 (21%)	view
29	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	178:208 (1%) 148:178 (1%)	view
24	x 2	fizz/tool fizz/tool	FizzClientCommand.cpp FizzServerCommand.cpp	605:634 (3%) 802:831 (2%)	view
24	x 2	fizz/extensions/javacrypto fizz/protocol	JavaCryptoCertificateVerifier.cpp DefaultCertificateVerifier.cpp	30:64 (28%) 50:84 (22%)	view
19	x 2	fizz/extensions/javacrypto fizz/protocol	JavaCryptoCertificateVerifier.cpp DefaultCertificateVerifier.cpp	90:114 (22%) 122:146 (18%)	view
18	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	2071:2091 (1%) 2043:2063 (1%)	view
16	x 2	fizz/client fizz/server	State.h State.h	108:159 (6%) 109:160 (7%)	view
16	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	265:283 (<1%) 262:280 (<1%)	view
16	x 2	fizz/client fizz/server	State.h State.h	431:460 (6%) 349:371 (7%)	view
15	x 2	fizz/client fizz/server	FizzClient-inl.h FizzServer-inl.h	67:81 (17%) 92:106 (15%)	view
15	x 2	fizz/tool fizz/tool	FizzClientCommand.cpp FizzServerCommand.cpp	640:656 (2%) 843:859 (1%)	view
15	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	245:262 (<1%) 242:259 (<1%)	view
15	x 2	build/fbcode_builder/CMake build/fbcode_builder/CMake	cmake FBThriftCppLibrary.cmake FBThriftPyLibrary.cmake	171:185 (8%) 40:54 (15%)	view
14	x 2	build/fbcode_builder/getdeps build/fbcode_builder/getdeps	builder.py builder.py	722:735 (1%) 1208:1221 (1%)	view
14	x 2	fizz/experimental/batcher fizz/experimental/batcher	Batcher.h Batcher.h	174:191 (8%) 227:244 (8%)	view
14	x 2	fizz/client fizz/client	ClientProtocol.cpp ClientProtocol.cpp	823:836 (<1%) 852:869 (<1%)	view
13	x 2	fizz/client fizz/server	FizzClient-inl.h FizzServer-inl.h	84:96 (15%) 106:118 (13%)	view
13	x 2	fizz/util fizz/util	Variant.h Variant.h	98:110 (7%) 156:168 (7%)	view
13	x 2	build/fbcode_builder/getdeps build/fbcode_builder/getdeps	platform.py platform.py	78:92 (7%) 136:149 (7%)	view
13	x 2	fizz/client fizz/server	AsyncFizzClient.h AsyncFizzServer.h	157:174 (6%) 100:117 (13%)	view
13	x 2	build/fbcode_builder/CMake build/fbcode_builder/CMake	cmake FindLibUnwind.cmake FindZstd.cmake	1:13 (52%) 1:13 (38%)	view
13	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	2101:2114 (<1%) 2073:2086 (<1%)	view
12	x 2	fizz/client fizz/client	ClientProtocol.cpp ClientProtocol.cpp	1946:1957 (<1%) 2065:2076 (<1%)	view
12	x 2	fizz/client fizz/client	ClientProtocol.cpp ClientProtocol.cpp	1933:1944 (<1%) 2095:2106 (<1%)	view
12	x 2	fizz/server fizz/server	ServerProtocol.cpp ServerProtocol.cpp	1919:1930 (<1%) 2037:2048 (<1%)	view
12	x 2	fizz/extensions/delegatedcred fizz/protocol	SelfDelegatedCredential.h Certificate.h	44:61 (27%) 173:190 (10%)	view
12	x 2	fizz/client fizz/client	AsyncFizzClient-inl.h AsyncFizzClient-inl.h	454:467 (2%) 537:550 (2%)	view
12	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	2254:2266 (<1%) 2117:2129 (<1%)	view
11	x 2	fizz/tool fizz/tool	FizzClientCommand.cpp FizzServerCommand.cpp	518:528 (1%) 706:716 (1%)	view
11	x 2	fizz/client fizz/server	AsyncFizzClient-inl.h AsyncFizzServer-inl.h	275:286 (2%) 181:192 (4%)	view
11	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	1207:1218 (<1%) 1327:1338 (<1%)	view
11	x 2	build/fbcode_builder/CMake build/fbcode_builder/CMake	cmake RustStaticLibrary.cmake RustStaticLibrary.cmake	115:127 (4%) 180:192 (4%)	view
11	x 2	fizz/client fizz/server	FizzClientContext.h FizzServerContext.h	46:72 (8%) 69:92 (6%)	view
11	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	2238:2249 (<1%) 2101:2112 (<1%)	view
11	x 2	build/fbcode_builder/CMake build/fbcode_builder/CMake	cmake FBThriftCppLibrary.cmake FBThriftPyLibrary.cmake	86:97 (6%) 53:64 (11%)	view
10	x 2	fizz/extensions/javacrypto fizz/protocol	JavaCryptoCertificateVerifier.cpp DefaultCertificateVerifier.cpp	118:135 (11%) 150:167 (9%)	view
10	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	1771:1781 (<1%) 1856:1866 (<1%)	view
10	x 2	build/fbcode_builder/CMake fizz/cmake	cmake FindGMock.cmake FindGMock.cmake	2:12 (14%) 2:12 (20%)	view
10	x 2	build/fbcode_builder/getdeps build/fbcode_builder/getdeps	manifest.py manifest.py	489:498 (1%) 501:510 (1%)	view
10	x 2	fizz/tool fizz/tool	FizzClientCommand.cpp FizzServerBenchmarkCommand.cpp	742:753 (1%) 236:246 (5%)	view
10	x 2	fizz/server fizz/server	ServerProtocol.cpp ServerProtocol.cpp	1608:1617 (<1%) 1633:1642 (<1%)	view
10	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	344:354 (<1%) 359:369 (<1%)	view
10	x 2	fizz/record fizz/record	EncryptedRecordLayer.h EncryptedRecordLayer.h	55:70 (12%) 116:131 (12%)	view
9	x 2	fizz/crypto/aead fizz/crypto/aead	OpenSSLEVPCipher.cpp OpenSSLEVPCipher.cpp	438:446 (2%) 454:462 (2%)	view
9	x 2	build/fbcode_builder/CMake build/fbcode_builder/CMake	cmake FBThriftCppLibrary.cmake FBThriftLibrary.cmake	27:35 (5%) 29:38 (12%)	view
9	x 2	fizz/client fizz/server	FizzClientContext.h FizzServerContext.h	280:288 (6%) 367:375 (5%)	view
9	x 2	fizz/client fizz/server	FizzClient.h FizzServer.h	48:58 (26%) 40:50 (29%)	view
9	x 2	fizz/client fizz/server	ClientProtocol.cpp ServerProtocol.cpp	2041:2051 (<1%) 2014:2024 (<1%)	view
9	x 2	build/fbcode_builder/getdeps build/fbcode_builder/getdeps	manifest.py manifest.py	291:299 (1%) 328:336 (1%)	view

Duplicated Units

The list of top 8 duplicated units.

See data for all 8 unit duplicates...

Size	#	Folders	Files	Lines	Code
32	x 2	fizz/server fizz/client	ServerProtocol.cpp ClientProtocol.cpp	147:180 177:210	view
23	x 2	fizz/protocol fizz/extensions/javacrypto	DefaultCertificateVerifier.cpp JavaCryptoCertificateVerifier.cpp	121:147 89:115	view
18	x 2	fizz/server fizz/client	ServerProtocol.cpp ClientProtocol.cpp	296:316 298:318	view
18	x 2	fizz/server fizz/client	ServerProtocol.cpp ClientProtocol.cpp	318:337 320:339	view
9	x 2	fizz/server fizz/client	ServerProtocol.cpp ClientProtocol.cpp	361:371 346:356	view
8	x 2	fizz/protocol fizz/extensions/javacrypto	DefaultCertificateVerifier.cpp JavaCryptoCertificateVerifier.cpp	150:162 118:130	view
6	x 2	fizz/experimental/ktls fizz/client	AsyncFizzBaseKTLS.cpp ClientProtocol.cpp	41:48 1988:1995	view
6	x 2	fizz/record fizz/record	RecordLayer.h EncryptedRecordLayer.h	167:174 46:53	view